@article{HaegerBongaertsSiegert2022, author = {Haeger, Gerrit and Bongaerts, Johannes and Siegert, Petra}, title = {A convenient ninhydrin assay in 96-well format for amino acid-releasing enzymes using an air-stable reagent}, series = {Analytical Biochemistry}, journal = {Analytical Biochemistry}, number = {624}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1096-0309}, doi = {10.1016/j.ab.2022.114819}, pages = {Artikel 114819}, year = {2022}, abstract = {An improved and convenient ninhydrin assay for aminoacylase activity measurements was developed using the commercial EZ Nin™ reagent. Alternative reagents from literature were also evaluated and compared. The addition of DMSO to the reagent enhanced the solubility of Ruhemann's purple (RP). Furthermore, we found that the use of a basic, aqueous buffer enhances stability of RP. An acidic protocol for the quantification of lysine was developed by addition of glacial acetic acid. The assay allows for parallel processing in a 96-well format with measurements microtiter plates.}, language = {en} } @article{FalkenbergBottBongaertsetal.2022, author = {Falkenberg, Fabian and Bott, Michael and Bongaerts, Johannes and Siegert, Petra}, title = {Phylogenetic survey of the subtilase family and a data-mining-based search for new subtilisins from Bacillaceae}, series = {Frontiers in Microbiology}, volume = {2022}, journal = {Frontiers in Microbiology}, number = {13}, publisher = {Frontiers}, address = {Lausanne}, issn = {1664-302X}, doi = {10.3389/fmicb.2022.1017978}, pages = {Artikel 13:1017978}, year = {2022}, abstract = {The subtilase family (S8), a member of the clan SB of serine proteases are ubiquitous in all kingdoms of life and fulfil different physiological functions. Subtilases are divided in several groups and especially subtilisins are of interest as they are used in various industrial sectors. Therefore, we searched for new subtilisin sequences of the family Bacillaceae using a data mining approach. The obtained 1,400 sequences were phylogenetically classified in the context of the subtilase family. This required an updated comprehensive overview of the different groups within this family. To fill this gap, we conducted a phylogenetic survey of the S8 family with characterised holotypes derived from the MEROPS database. The analysis revealed the presence of eight previously uncharacterised groups and 13 subgroups within the S8 family. The sequences that emerged from the data mining with the set filter parameters were mainly assigned to the subtilisin subgroups of true subtilisins, high-alkaline subtilisins, and phylogenetically intermediate subtilisins and represent an excellent source for new subtilisin candidates.}, language = {en} } @inproceedings{PuetzBaierBrauneretal.2022, author = {P{\"u}tz, Sebastian and Baier, Ralph and Brauner, Philipp and Brillowski, Florian and Dammers, Hannah and Liehner, Luca and Mertens, Alexander and Rodemann, Niklas and Schneider, Sebastian and Schollemann, Alexander and Steuer-Dankert, Linda and Vervier, Luisa and Gries, Thomas and Leicht-Scholten, Carmen and Nagel, Saskia K. and Piller, Frank T. and Schuh, G{\"u}nther and Ziefle, Martina and Nitsch, Verena}, title = {An interdisciplinary view on humane interfaces for digital shadows in the internet of production}, series = {2022 15th International Conference on Human System Interaction (HSI)}, booktitle = {2022 15th International Conference on Human System Interaction (HSI)}, publisher = {IEEE}, isbn = {978-1-6654-6823-7 (Print)}, issn = {2158-2246 (Print)}, doi = {10.1109/HSI55341.2022.9869467}, pages = {8 Seiten}, year = {2022}, abstract = {Digital shadows play a central role for the next generation industrial internet, also known as Internet of Production (IoP). However, prior research has not considered systematically how human actors interact with digital shadows, shaping their potential for success. To address this research gap, we assembled an interdisciplinary team of authors from diverse areas of human-centered research to propose and discuss design and research recommendations for the implementation of industrial user interfaces for digital shadows, as they are currently conceptualized for the IoP. Based on the four use cases of decision support systems, knowledge sharing in global production networks, human-robot collaboration, and monitoring employee workload, we derive recommendations for interface design and enhancing workers' capabilities. This analysis is extended by introducing requirements from the higher-level perspectives of governance and organization.}, language = {en} } @inproceedings{RigaPitilakisButenwegetal.2022, author = {Riga, Evi and Pitilakis, Kyriazis and Butenweg, Christoph and Apostolaki, Stefania and Karatzetzou, Anna}, title = {Investigating the impact of the new European Seismic Hazard Model ESHM20 on the seismic design and safety control of industrial facilities}, series = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, booktitle = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, editor = {Arion, Cristian and Scupin, Alexandra and Ţigănescu, Alexandru}, isbn = {978-973-100-533-1}, pages = {3261 -- 3270}, year = {2022}, abstract = {The seismic performance and safety of major European industrial facilities has a global interest for Europe, its citizens and economy. A potential major disaster at an industrial site could affect several countries, probably far beyond the country where it is located. However, the seismic design and safety assessment of these facilities is practically based on national, often outdated seismic hazard assessment studies, due to many reasons, including the absence of a reliable, commonly developed seismic hazard model for whole Europe. This important gap is no more existing, as the 2020 European Seismic Hazard Model ESHM20 was released in December 2021. In this paper we investigate the expected impact of the adoption of ESHM20 on the seismic demand for industrial facilities, through the comparison of the ESHM20 probabilistic hazard at the sites where industrial facilities are located with the respective national and European regulations. The goal of this preliminary work in the framework of Working Group 13 of the European Association for Earthquake Engineering (EAEE), is to identify potential inadequacies in the design and safety control of existing industrial facilities and to highlight the expected impact of the adoption of the new European Seismic Hazard Model on the design of new industrial facilities and the safety assessment of existing ones.}, language = {en} } @inproceedings{MilijašŠakićMarinkovićetal.2022, author = {Milijaš, Aleksa and Šakić, Bogdan and Marinković, Marko and Butenweg, Christoph and Gams, Matija and Klinkel, Sven}, title = {Effects of prior in-plane damage on out-of-plane response of masonry infills with openings}, series = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, booktitle = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, editor = {Arion, Cristian and Scupin, Alexandra and Ţigănescu, Alexandru}, isbn = {978-973-100-533-1}, pages = {2747 -- 2756}, year = {2022}, abstract = {Masonry infill walls are the most traditional enclosure system that is still widely used in RC frame buildings all over the world, particularly in seismic active regions. Although infill walls are usually neglected in seismic design, during an earthquake event they are subjected to in-plane and out-of-plane forces that can act separately or simultaneously. Since observations of damage to buildings after recent earthquakes showed detrimental effects of in-plane and out-of-plane load interaction on infill walls, the number of studies that focus on influence of in-plane damage on out-of-plane response has significantly increased. However, most of the xperimental campaigns have considered only solid infills and there is a lack of combined in-plane and out-of-plane experimental tests on masonry infills with openings, although windows and doors strongly affect seismic performance. In this paper, two types of experimental tests on infills with window openings are presented. The first is a pure out-of-plane test and the second one is a sequential in-plane and out-of-plane test aimed at investigating the effects of existing in-plane damage on outof-plane response. Additionally, findings from two tests with similar load procedure that were carried out on fully infilled RC frames in the scope of the same project are used for comparison. Test results clearly show that window opening increased vulnerability of infills to combined seismic actions and that prevention of damage in infills with openings is of the utmost importance for seismic safety.}, language = {en} } @inproceedings{MorandiButenwegBreisetal.2022, author = {Morandi, Paolo and Butenweg, Christoph and Breis, Khaled and Beyer, Katrin and Magenes, Guido}, title = {Behaviour factor q for the seismic design of URM buildings}, series = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, booktitle = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, editor = {Arion, Christian and Scupin, Alexandra and Ţigănescu, Alexandru}, isbn = {978-973-100-533-1}, pages = {1184 -- 1194}, year = {2022}, abstract = {Recent earthquakes showed that low-rise URM buildings following codecompliant seismic design and details behaved in general very well without substantial damages. Although advances in simulation tools make nonlinear calculation methods more readily accessible to designers, linear analyses will still be the standard design method for years to come. The present paper aims to improve the linear seismic design method by providing a proper definition of the q-factor of URM buildings. Values of q-factors are derived for low-rise URM buildings with rigid diaphragms, with reference to modern structural configurations realized in low to moderate seismic areas of Italy and Germany. The behaviour factor components for deformation and energy dissipation capacity and for overstrength due to the redistribution of forces are derived by means of pushover analyses. As a result of the investigations, rationally based values of the behaviour factor q to be used in linear analyses in the range of 2.0 to 3.0 are proposed.}, language = {en} } @misc{TopcuMadabhushiStaat2022, author = {Topcu, Murat and Madabhushi, Gopal Santana Phani and Staat, Manfred}, title = {Datasets from FEM Simulations done with COMSOL Multiphysics and Code_Aster}, doi = {10.6084/m9.figshare.19333295.v2}, year = {2022}, abstract = {Datasets from FEM Simulations done with COMSOL Multiphysics and Code_Aster for an elastic stress transfer between matrix and fibres having a variable radius.}, language = {en} } @article{VahidpourGuthmanArreolaetal.2022, author = {Vahidpour, Farnoosh and Guthman, Eric and Arreola, Julia and Alghazali, Yousef H. M. and Wagner, Torsten and Sch{\"o}ning, Michael Josef}, title = {Assessment of Various Process Parameters for Optimized Sterilization Conditions Using a Multi-Sensing Platform}, series = {Foods}, volume = {11}, journal = {Foods}, number = {5}, publisher = {MDPI}, address = {Basel}, issn = {2304-8158}, doi = {10.3390/foods11050660}, pages = {Artikel 660}, year = {2022}, abstract = {In this study, an online multi-sensing platform was engineered to simultaneously evaluate various process parameters of food package sterilization using gaseous hydrogen peroxide (H₂O₂). The platform enabled the validation of critical aseptic parameters. In parallel, one series of microbiological count reduction tests was performed using highly resistant spores of B. atrophaeus DSM 675 to act as the reference method for sterility validation. By means of the multi-sensing platform together with microbiological tests, we examined sterilization process parameters to define the most effective conditions with regards to the highest spore kill rate necessary for aseptic packaging. As these parameters are mutually associated, a correlation between different factors was elaborated. The resulting correlation indicated the need for specific conditions regarding the applied H₂O₂ gas temperature, the gas flow and concentration, the relative humidity and the exposure time. Finally, the novel multi-sensing platform together with the mobile electronic readout setup allowed for the online and on-site monitoring of the sterilization process, selecting the best conditions for sterility and, at the same time, reducing the use of the time-consuming and costly microbiological tests that are currently used in the food package industry.}, language = {en} } @article{FiedlerOrzadaFloeseretal.2022, author = {Fiedler, Thomas M. and Orzada, Stephan and Fl{\"o}ser, Martina and Rietsch, Stefan H. G. and Schmidt, Simon and Stelter, Jonathan K. and Wittrich, Marco and Quick, Harald H. and Bitz, Andreas and Ladd, Mark E.}, title = {Performance and safety assessment of an integrated transmitarray for body imaging at 7 T under consideration of specificabsorption rate, tissue temperature, and thermal dose}, series = {NMR in Biomedicine}, volume = {35}, journal = {NMR in Biomedicine}, number = {5}, publisher = {Wiley}, issn = {0952-3480 (Print)}, doi = {10.1002/nbm.4656}, pages = {1 -- 17}, year = {2022}, abstract = {In this study, the performance of an integrated body-imaging array for 7 T with 32 radiofrequency (RF) channels under consideration of local specific absorption rate (SAR), tissue temperature, and thermal dose limits was evaluated and the imaging performance was compared with a clinical 3 T body coil. Thirty-two transmit elements were placed in three rings between the bore liner and RF shield of the gradient coil. Slice-selective RF pulse optimizations for B1 shimming and spokes were performed for differently oriented slices in the body under consideration of realistic constraints for power and local SAR. To improve the B1+ homogeneity, safety assessments based on temperature and thermal dose were performed to possibly allow for higher input power for the pulse optimization than permissible with SAR limits. The results showed that using two spokes, the 7 T array outperformed the 3 T birdcage in all the considered regions of interest. However, a significantly higher SAR or lower duty cycle at 7 T is necessary in some cases to achieve similar B1+ homogeneity as at 3 T. The homogeneity in up to 50 cm-long coronal slices can particularly benefit from the high RF shim performance provided by the 32 RF channels. The thermal dose approach increases the allowable input power and the corresponding local SAR, in one example up to 100 W/kg, without limiting the exposure time necessary for an MR examination. In conclusion, the integrated antenna array at 7 T enables a clinical workflow for body imaging and comparable imaging performance to a conventional 3 T clinical body coil.}, language = {en} } @article{AngermannGuenthnerHanssenetal.2022, author = {Angermann, Susanne and G{\"u}nthner, Roman and Hanssen, Henner and Lorenz, Georg and Braunisch, Matthias C. and Steubl, Dominik and Matschkal, Julia and Kemmner, Stephan and Hausinger, Renate and Block, Zenonas and Haller, Bernhard and Heemann, Uwe and Kotliar, Konstantin and Grimmer, Timo and Schmaderer, Christoph}, title = {Cognitive impairment and microvascular function in end-stage renal disease}, series = {International Journal of Methods in Psychiatric Research (MPR)}, volume = {31}, journal = {International Journal of Methods in Psychiatric Research (MPR)}, number = {2}, publisher = {Wiley}, issn = {1049-8931 (Print)}, doi = {10.1002/mpr.1909}, pages = {1 -- 10}, year = {2022}, abstract = {Objective Hemodialysis patients show an approximately threefold higher prevalence of cognitive impairment compared to the age-matched general population. Impaired microcirculatory function is one of the assumed causes. Dynamic retinal vessel analysis is a quantitative method for measuring neurovascular coupling and microvascular endothelial function. We hypothesize that cognitive impairment is associated with altered microcirculation of retinal vessels. Methods 152 chronic hemodialysis patients underwent cognitive testing using the Montreal Cognitive Assessment. Retinal microcirculation was assessed by Dynamic Retinal Vessel Analysis, which carries out an examination recording retinal vessels' reaction to a flicker light stimulus under standardized conditions. Results In unadjusted as well as in adjusted linear regression analyses a significant association between the visuospatial executive function domain score of the Montreal Cognitive Assessment and the maximum arteriolar dilation as response of retinal arterioles to the flicker light stimulation was obtained. Conclusion This is the first study determining retinal microvascular function as surrogate for cerebral microvascular function and cognition in hemodialysis patients. The relationship between impairment in executive function and reduced arteriolar reaction to flicker light stimulation supports the involvement of cerebral small vessel disease as contributing factor for the development of cognitive impairment in this patient population and might be a target for noninvasive disease monitoring and therapeutic intervention.}, language = {en} } @techreport{GhinaiyaLehmannGoettsche2022, author = {Ghinaiya, Jagdishkumar and Lehmann, Thomas and G{\"o}ttsche, Joachim}, title = {LOCAL+ - ein kreislauff{\"a}higer Holzmodulbau mit nachhaltigem Energie- und Wohnraumkonzept}, series = {Bauphysik}, volume = {44}, journal = {Bauphysik}, number = {3}, publisher = {Ernst \& Sohn}, address = {Hoboken}, issn = {0171-5445 (Print)}, doi = {10.1002/bapi.202200010}, pages = {136 -- 142}, year = {2022}, abstract = {Mit dem Beitrag des Teams der FH Aachen zum SDE 21/22 wird im Projekt LOCAL+ ein kreislauff{\"a}higer Holzmodulbau mit einem innovativen Wohnraumkonzept geplant und umgesetzt. Ziel dieses Konzeptes ist die Verringerung des stetig steigenden Wohnfl{\"a}chenbedarfs durch ein Raum-in-Raum Konzept. Geb{\"a}udetechnisch wird in dem Projekt nicht nur das Einzelgeb{\"a}ude betrachtet, sondern unter Ber{\"u}cksichtigung des Geb{\"a}udebestandes wird f{\"u}r das Quartier ein innovatives und nachhaltiges Energiekonzept entwickelt. Ein zentrales Wasserstoffsystem ist f{\"u}r ein Quartier geplant, um den Stromverbrauch aus dem Netz im Winter zu reduzieren. Zentraler Bestandteil des TGA-Konzepts ist ein unterirdischer Eisspeicher, eine PVT und eine W{\"a}rmepumpe mit intelligenter Regelstrategie. Ein Teil des neuen Geb{\"a}udes (Design Challenge DC) wird in Wuppertal als Hausdemonstrationseinheit (HDU) pr{\"a}sentiert. Eine hygrothermische Simulation der HDU wurde mit der WUFI-Software durchgef{\"u}hrt. Da im Innenraum Lehmmodule und -platten als Feuchtigkeitspuffer verwendet werden, spielen die Themen Feuchtigkeit, Holzf{\"a}ule und Schimmelwachstum eine wichtige Rolle.}, language = {de} } @article{HoffmannRohrbachUhletal.2022, author = {Hoffmann, Andreas and Rohrbach, Felix and Uhl, Matthias and Ceblin, Maximilian and Bauer, Thomas and Mallah, Marcel and Jacob, Timo and Heuermann, Holger and Kuehne, Alexander J. C.}, title = {Atmospheric pressure plasma-jet treatment of polyacrylonitrile-nonwovens—Stabilization and roll-to-roll processing}, series = {Journal of Applied Polymer Science}, volume = {139}, journal = {Journal of Applied Polymer Science}, number = {37}, publisher = {Wiley}, issn = {0021-8995 (Print)}, doi = {10.1002/app.52887}, pages = {1 -- 9}, year = {2022}, abstract = {Carbon nanofiber nonwovens represent a powerful class of materials with prospective application in filtration technology or as electrodes with high surface area in batteries, fuel cells, and supercapacitors. While new precursor-to-carbon conversion processes have been explored to overcome productivity restrictions for carbon fiber tows, alternatives for the two-step thermal conversion of polyacrylonitrile precursors into carbon fiber nonwovens are absent. In this work, we develop a continuous roll-to-roll stabilization process using an atmospheric pressure microwave plasma jet. We explore the influence of various plasma-jet parameters on the morphology of the nonwoven and compare the stabilized nonwoven to thermally stabilized samples using scanning electron microscopy, differential scanning calorimetry, and infrared spectroscopy. We show that stabilization with a non-equilibrium plasma-jet can be twice as productive as the conventional thermal stabilization in a convection furnace, while producing electrodes of comparable electrochemical performance.}, language = {en} } @article{PourshahidiAchtsnichtOffenhaeusseretal.2022, author = {Pourshahidi, Ali Mohammad and Achtsnicht, Stefan and Offenh{\"a}usser, Andreas and Krause, Hans-Joachim}, title = {Frequency Mixing Magnetic Detection Setup Employing Permanent Ring Magnets as a Static Offset Field Source}, series = {Sensors}, volume = {22}, journal = {Sensors}, number = {22}, editor = {Offenh{\"a}usser, Andreas}, publisher = {MDPI}, address = {Basel}, issn = {1424-8220}, doi = {10.3390/s22228776}, pages = {12 Seiten}, year = {2022}, abstract = {Frequency mixing magnetic detection (FMMD) has been explored for its applications in fields of magnetic biosensing, multiplex detection of magnetic nanoparticles (MNP) and the determination of core size distribution of MNP samples. Such applications rely on the application of a static offset magnetic field, which is generated traditionally with an electromagnet. Such a setup requires a current source, as well as passive or active cooling strategies, which directly sets a limitation based on the portability aspect that is desired for point of care (POC) monitoring applications. In this work, a measurement head is introduced that involves the utilization of two ring-shaped permanent magnets to generate a static offset magnetic field. A steel cylinder in the ring bores homogenizes the field. By variation of the distance between the ring magnets and of the thickness of the steel cylinder, the magnitude of the magnetic field at the sample position can be adjusted. Furthermore, the measurement setup is compared to the electromagnet offset module based on measured signals and temperature behavior.}, language = {en} } @article{PoghossianKarschuckWagneretal.2022, author = {Poghossian, Arshak and Karschuck, Tobias and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Field-Effect Capacitors Decorated with Ligand-Stabilized Gold Nanoparticles: Modeling and Experiments}, series = {Biosensors}, volume = {12}, journal = {Biosensors}, number = {5}, publisher = {MDPI}, address = {Basel}, issn = {2079-6374}, doi = {10.3390/bios12050334}, pages = {Artikel 334}, year = {2022}, abstract = {Nanoparticles are recognized as highly attractive tunable materials for designing field-effect biosensors with enhanced performance. In this work, we present a theoretical model for electrolyte-insulator-semiconductor capacitors (EISCAP) decorated with ligand-stabilized charged gold nanoparticles. The charged AuNPs are taken into account as additional, nanometer-sized local gates. The capacitance-voltage (C-V) curves and constant-capacitance (ConCap) signals of the AuNP-decorated EISCAPs have been simulated. The impact of the AuNP coverage on the shift of the C-V curves and the ConCap signals was also studied experimentally on Al-p-Si-SiO₂ EISCAPs decorated with positively charged aminooctanethiol-capped AuNPs. In addition, the surface of the EISCAPs, modified with AuNPs, was characterized by scanning electron microscopy for different immobilization times of the nanoparticles.}, language = {en} } @article{VahidpourAlghazaliAkcaetal.2022, author = {Vahidpour, Farnoosh and Alghazali, Yousef and Akca, Sevilay and Hommes, Gregor and Sch{\"o}ning, Michael Josef}, title = {An Enzyme-Based Interdigitated Electrode-Type Biosensor for Detecting Low Concentrations of H₂O₂ Vapor/Aerosol}, series = {Chemosensors}, volume = {10}, journal = {Chemosensors}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {2227-9040}, doi = {10.3390/chemosensors10060202}, pages = {Arikel 202}, year = {2022}, abstract = {This work introduces a novel method for the detection of H₂O₂ vapor/aerosol of low concentrations, which is mainly applied in the sterilization of equipment in medical industry. Interdigitated electrode (IDE) structures have been fabricated by means of microfabrication techniques. A differential setup of IDEs was prepared, containing an active sensor element (active IDE) and a passive sensor element (passive IDE), where the former was immobilized with an enzymatic membrane of horseradish peroxidase that is selective towards H₂O₂. Changes in the IDEs' capacitance values (active sensor element versus passive sensor element) under H₂O₂ vapor/aerosol atmosphere proved the detection in the concentration range up to 630 ppm with a fast response time (<60 s). The influence of relative humidity was also tested with regard to the sensor signal, showing no cross-sensitivity. The repeatability assessment of the IDE biosensors confirmed their stable capacitive signal in eight subsequent cycles of exposure to H₂O₂ vapor/aerosol. Room-temperature detection of H₂O₂ vapor/aerosol with such miniaturized biosensors will allow a future three-dimensional, flexible mapping of aseptic chambers and help to evaluate sterilization assurance in medical industry.}, language = {en} } @article{HoffmannUhlCeblinetal.2022, author = {Hoffmann, Andreas and Uhl, Matthias and Ceblin, Maximilian and Rohrbach, Felix and Bansmann, Joachim and Mallah, Marcel and Heuermann, Holger and Jacob, Timo and Kuehne, Alexander J.C.}, title = {Atmospheric pressure plasma-jet treatment of PAN-nonwovens—carbonization of nanofiber electrodes}, series = {C - Journal of Carbon Research}, volume = {8}, journal = {C - Journal of Carbon Research}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {2311-5629}, doi = {10.3390/c8030033}, pages = {8 Seiten}, year = {2022}, abstract = {Carbon nanofibers are produced from dielectric polymer precursors such as polyacrylonitrile (PAN). Carbonized nanofiber nonwovens show high surface area and good electrical conductivity, rendering these fiber materials interesting for application as electrodes in batteries, fuel cells, and supercapacitors. However, thermal processing is slow and costly, which is why new processing techniques have been explored for carbon fiber tows. Alternatives for the conversion of PAN-precursors into carbon fiber nonwovens are scarce. Here, we utilize an atmospheric pressure plasma jet to conduct carbonization of stabilized PAN nanofiber nonwovens. We explore the influence of various processing parameters on the conductivity and degree of carbonization of the converted nanofiber material. The precursor fibers are converted by plasma-jet treatment to carbon fiber nonwovens within seconds, by which they develop a rough surface making subsequent surface activation processes obsolete. The resulting carbon nanofiber nonwovens are applied as supercapacitor electrodes and examined by cyclic voltammetry and impedance spectroscopy. Nonwovens that are carbonized within 60 s show capacitances of up to 5 F g⁻¹.}, language = {en} } @article{AkimbekovDigelTastambeketal.2022, author = {Akimbekov, Nuraly S. and Digel, Ilya and Tastambek, Kuanysh T. and Marat, Adel K. and Turaliyeva, Moldir A. and Kaiyrmanova, Gulzhan K.}, title = {Biotechnology of Microorganisms from Coal Environments: From Environmental Remediation to Energy Production}, series = {Biology}, volume = {11}, journal = {Biology}, number = {9}, publisher = {MDPI}, address = {Basel}, issn = {2079-7737}, doi = {10.3390/biology11091306}, pages = {47 Seiten}, year = {2022}, abstract = {It was generally believed that coal sources are not favorable as live-in habitats for microorganisms due to their recalcitrant chemical nature and negligible decomposition. However, accumulating evidence has revealed the presence of diverse microbial groups in coal environments and their significant metabolic role in coal biogeochemical dynamics and ecosystem functioning. The high oxygen content, organic fractions, and lignin-like structures of lower-rank coals may provide effective means for microbial attack, still representing a greatly unexplored frontier in microbiology. Coal degradation/conversion technology by native bacterial and fungal species has great potential in agricultural development, chemical industry production, and environmental rehabilitation. Furthermore, native microalgal species can offer a sustainable energy source and an excellent bioremediation strategy applicable to coal spill/seam waters. Additionally, the measures of the fate of the microbial community would serve as an indicator of restoration progress on post-coal-mining sites. This review puts forward a comprehensive vision of coal biodegradation and bioprocessing by microorganisms native to coal environments for determining their biotechnological potential and possible applications.}, language = {en} } @article{SchulteTiggesFoersterNikolovskietal.2022, author = {Schulte-Tigges, Joschua and F{\"o}rster, Marco and Nikolovski, Gjorgji and Reke, Michael and Ferrein, Alexander and Kaszner, Daniel and Matheis, Dominik and Walter, Thomas}, title = {Benchmarking of various LiDAR sensors for use in self-driving vehicles in real-world environments}, series = {Sensors}, volume = {22}, journal = {Sensors}, number = {19}, publisher = {MDPI}, address = {Basel}, issn = {1424-8220}, doi = {10.3390/s22197146}, pages = {20 Seiten}, year = {2022}, abstract = {Abstract In this paper, we report on our benchmark results of the LiDAR sensors Livox Horizon, Robosense M1, Blickfeld Cube, Blickfeld Cube Range, Velodyne Velarray H800, and Innoviz Pro. The idea was to test the sensors in different typical scenarios that were defined with real-world use cases in mind, in order to find a sensor that meet the requirements of self-driving vehicles. For this, we defined static and dynamic benchmark scenarios. In the static scenarios, both LiDAR and the detection target do not move during the measurement. In dynamic scenarios, the LiDAR sensor was mounted on the vehicle which was driving toward the detection target. We tested all mentioned LiDAR sensors in both scenarios, show the results regarding the detection accuracy of the targets, and discuss their usefulness for deployment in self-driving cars.}, language = {en} } @techreport{KlugeKirschBudach2022, author = {Kluge, Katharina and Kirsch, Ansgar and Budach, Christoph}, title = {Digitale Lehre in der Geotechnik: Aktueller Stand und weitere Entwicklungen}, series = {geotechntik}, journal = {geotechntik}, number = {Early View}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {0172-6145 (Print)}, doi = {10.1002/gete.202200013}, pages = {8 Seiten}, year = {2022}, abstract = {Digitale Lehrmaterialien werden seit mehreren Jahren in den Hochschulen eingesetzt und er{\"o}ffnen ganz neue Wege zur Vermittlung des Lehrstoffs. Die Erstellung dieser Lehrmaterialien kann allerdings je nach Art und Qualit{\"a}t sehr zeitintensiv sein und f{\"u}r Lehrende einen großen Mehraufwand bedeuten. Im Rahmen eines Kooperationsprojekts zur Erstellung von Lehrvideos f{\"u}r geotechnische Feld- und Laborversuche haben die Autoren dieses Beitrags allerdings die Erfahrung gemacht, dass das gemeinsame, hochschul{\"u}bergreifende Erstellen von Lehrmaterialien viele Vorteile mit sich bringt. Dadurch inspiriert, f{\"u}hrten die Autoren dieses Berichts eine Umfrage unter den deutschsprachigen Geotechnik-Lehrst{\"u}hlen der (Technischen) Universit{\"a}ten und (Fach-)Hochschulen durch. Nach drei Semestern, in denen Lehrveranstaltungen an den Hochschulen aufgrund der Corona-Pandemie {\"u}berwiegend digital durchgef{\"u}hrt werden mussten, war es ein Ziel dieser Umfrage, den Bestand und den Einsatz digitaler Lehrmaterialien im Fachgebiet Geotechnik zu erheben. Ein weiteres Ziel war die Initiierung eines Netzwerks, in dem sich Geotechnik-Professorinnen und -Professoren zu Lehrthemen austauschen k{\"o}nnen und gemeinsam (digitale) Lehrmaterialien erstellen und nutzen. Der vorliegende Beitrag stellt das gemeinsame Lehrprojekt der Autoren vor, pr{\"a}sentiert die Ergebnisse der durchgef{\"u}hrten Umfrage und berichtet {\"u}ber die ersten Aktivit{\"a}ten des neuen Netzwerks.}, language = {de} } @article{PennerUsherovichNiedermeieretal.2022, author = {Penner, Crystal and Usherovich, Samuel and Niedermeier, Jana and B{\´e}langer-Champagne, Camille and Trinczek, Michael and Paulßen, Elisabeth and Hoehr, Cornelia}, title = {Organic Scintillator-Fibre Sensors for Proton Therapy Dosimetry: SCSF-3HF and EJ-260}, series = {electronics}, volume = {12}, journal = {electronics}, number = {1}, publisher = {MDPI}, address = {Basel}, issn = {2079-9292}, doi = {10.3390/electronics12010011}, pages = {12 Seiten}, year = {2022}, abstract = {In proton therapy, the dose from secondary neutrons to the patient can contribute to side effects and the creation of secondary cancer. A simple and fast detection system to distinguish between dose from protons and neutrons both in pretreatment verification as well as potentially in vivo monitoring is needed to minimize dose from secondary neutrons. Two 3 mm long, 1 mm diameter organic scintillators were tested for candidacy to be used in a proton-neutron discrimination detector. The SCSF-3HF (1500) scintillating fibre (Kuraray Co. Chiyoda-ku, Tokyo, Japan) and EJ-260 plastic scintillator (Eljen Technology, Sweetwater, TX, USA) were irradiated at the TRIUMF Neutron Facility and the Proton Therapy Research Centre. In the proton beam, we compared the raw Bragg peak and spread-out Bragg peak response to the industry standard Markus chamber detector. Both scintillator sensors exhibited quenching at high LET in the Bragg peak, presenting a peak-to-entrance ratio of 2.59 for the EJ-260 and 2.63 for the SCSF-3HF fibre, compared to 3.70 for the Markus chamber. The SCSF-3HF sensor demonstrated 1.3 times the sensitivity to protons and 3 times the sensitivity to neutrons as compared to the EJ-260 sensor. Combined with our equations relating neutron and proton contributions to dose during proton irradiations, and the application of Birks' quenching correction, these fibres provide valid candidates for inexpensive and replicable proton-neutron discrimination detectors}, language = {en} } @article{KubalskiButenwegElDeib2022, author = {Kubalski, Thomas and Butenweg, Christoph and El-Deib, Khaled}, title = {Vereinfachte Ber{\"u}cksichtigung der Rahmentragwirkung in Mauerwerksgeb{\"a}uden}, series = {Bautechnik}, volume = {99}, journal = {Bautechnik}, number = {12}, editor = {Jesse, Dirk}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {0932-8351}, doi = {10.1002/bate.202200081}, pages = {865 -- 928}, year = {2022}, abstract = {Aufgrund der gestiegenen Anforderungen durch h{\"o}here Ein-wirkungen aus Wind und Erdbeben ist eine Verbesserung und Optimierung der Berechnungs- und Bemessungsans{\"a}tze f{\"u}r Mauerwerksbauten erforderlich. Eine bessere Ausnutzung der Tragwerksreserven ist durch die Ber{\"u}cksichtigung der Rah-mentragwirkung mit einer Aktivierung der Deckenscheiben in den Rechenmodellen m{\"o}glich, die in der Praxis aufgrund der Komplexit{\"a}t der Wand-Decken-Interaktion bislang nicht aus-genutzt wird. Im vorliegenden Aufsatz wird ein vereinfachter Ansatz auf Grundlage der mitwirkenden Plattenbreite von Schubw{\"a}nden aus Mauerwerk vorgestellt, der die wesentli-chen Einfl ussfaktoren in parametrisierten Tabellen erfasst. Damit steht den Tragwerksplanern ein einfach anwendbares Werkzeug zur Verf{\"u}gung, um die Rahmentragwirkung in der Mauerwerksbemessung anzusetzen.}, language = {de} } @article{ButenwegMarinkovicPhlippetal.2022, author = {Butenweg, Christoph and Marinkovic, Marko and Phlipp, Michel and Lins, Robin and Renaut, Philipp}, title = {Isolierung und BIM-basiertes Bauwerksmonitoring des neuen Geb{\"a}udekomplexes f{\"u}r das BioSense-Institut in Novi Sad, Serbien}, series = {Bauingenieur}, volume = {97}, journal = {Bauingenieur}, number = {6}, editor = {Haghsheno, Shervin}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, issn = {1436-4867}, doi = {10.37544/0005-6650-2022-06-28}, pages = {S3 -- S5}, year = {2022}, abstract = {Im Norden von Serbien erfolgt in Novi Sad der Neubau eines modernen Forschungsgeb{\"a}udes f{\"u}r das BioSense-Institut mit finanzieller Unterst{\"u}tzung durch die Eu-rop{\"a}ische Union. Der Geb{\"a}udeteil mit Laboren wird zum Schutz und zur Sicherstellung des reibungslosen Betriebs der sensiblen und kapitalintensiven technischen Einbauten mit ei-ner Erdbebenisolierung mit integrierter K{\"o}rperschallisolation versehen. Zus{\"a}tzlich wird der entkoppelte Laborteil des For-schungsgeb{\"a}udes mit einem BIM-basierten Bauwerksmonito-ring versehen, um {\"A}nderungen des Geb{\"a}udezustands jederzeit abfragen und beurteilen zu k{\"o}nnen.}, language = {de} } @article{MorandiButenwegBreisetal.2022, author = {Morandi, Paolo and Butenweg, Christoph and Breis, Khaled and Beyer, Katrin and Magenes, Guido}, title = {Latest findings on the behaviour factor q for the seismic design of URM buildings}, series = {Bulletin of Earthquake Engineering}, volume = {20}, journal = {Bulletin of Earthquake Engineering}, number = {11}, editor = {Ansal, Atilla}, publisher = {Springer Nature}, address = {Cham}, issn = {1573-1456}, doi = {10.1007/s10518-022-01419-7}, pages = {5797 -- 5848}, year = {2022}, abstract = {Recent earthquakes as the 2012 Emilia earthquake sequence showed that recently built unreinforced masonry (URM) buildings behaved much better than expected and sustained, despite the maximum PGA values ranged between 0.20-0.30 g, either minor damage or structural damage that is deemed repairable. Especially low-rise residential and commercial masonry buildings with a code-conforming seismic design and detailing behaved in general very well without substantial damages. The low damage grades of modern masonry buildings that was observed during this earthquake series highlighted again that codified design procedures based on linear analysis can be rather conservative. Although advances in simulation tools make nonlinear calculation methods more readily accessible to designers, linear analyses will still be the standard design method for years to come. The present paper aims to improve the linear seismic design method by providing a proper definition of the q-factor of URM buildings. These q-factors are derived for low-rise URM buildings with rigid diaphragms which represent recent construction practise in low to moderate seismic areas of Italy and Germany. The behaviour factor components for deformation and energy dissipation capacity and for overstrength due to the redistribution of forces are derived by means of pushover analyses. Furthermore, considerations on the behaviour factor component due to other sources of overstrength in masonry buildings are presented. As a result of the investigations, rationally based values of the behaviour factor q to be used in linear analyses in the range of 2.0-3.0 are proposed.}, language = {en} } @masterthesis{Freh2022, type = {Bachelor Thesis}, author = {Freh, Katharine}, title = {The Distance : ein dystpischer Kurzfilm}, publisher = {FH Aachen}, address = {Aachen}, pages = {53 Seiten}, year = {2022}, abstract = {"THE DISTANCE" ist ein fiktionaler, dystopischer Kurzfilm, welcher sich mit dem Leben in einem diktatorischen Polizeistaat auseinandersetzt. Jegliche Art von Aufstand oder negativer {\"A}ußerung dem Staat gegen{\"u}ber ist untersagt und wird hoch bestraft. Ziel dieser Arbeit ist es, die Zuschauer:innen zum Denken und zum Hinterfragen gesellschaftlicher Strukturen anzuregen. Durch passende Kost{\"u}me, Locations und Set-Design entsteht eine d{\"u}stere und unbehagliche Atmosph{\"a}re. Die passende Musik und das Sounddesign unterst{\"u}tzen diese Atmosph{\"a}re und geben den Zuschauer:innen einen guten Einblick in diese neue Welt. Zuletzt stellt sich die Frage, ob Dystopien {\"u}berhaupt noch fiktional sind oder doch schon zu unserer Realit{\"a}t geworden sind.}, language = {de} } @masterthesis{Franca2022, type = {Bachelor Thesis}, author = {Franca, Erma}, title = {Cai : eine Orientierungshilfe f{\"u}r Gefl{\"u}chtete und Migrant*innen in Deutschland}, publisher = {FH Aachen}, address = {Aachen}, pages = {161 Seiten}, year = {2022}, abstract = {Migration und Integration sind weltweit zwei allseits aktuelle Themen. Umso wichtiger ist es, die Ankunft und Integration von Migrant:innen und Gefl{\"u}chteten so anschaulich wie nur m{\"o}glich zu gestalten. Die Zielsetzung der Arbeit „Cai - Your guide through Germany" ist es eine digitale Anwendung in Form einer App zu konzipieren, die Gefl{\"u}chtete und Migrant:innen in Deutschland w{\"a}hrend des Migrations- und Integrationsprozesses unterst{\"u}tzt. Dies gelingt durch das strukturierte und themenspezifische Herantragen von notwendigen Informationen, Organisation sowie Selbsthilfeangeboten an die unterschiedlichen Zielgruppen. Unter der Ber{\"u}cksichtigung des Migrationsgrundes und des Standortes wird eine Ausgangssituation geschaffen mit individuellen Bed{\"u}rfnissen und Fragen, die es zu beantworten gilt. W{\"a}hrend Nutzer:innen durch „Cai" digital, selbstst{\"a}ndig und schnell an Informationen gelangen, werden gleichzeitig Beh{\"o}rden und Anlaufstellen sowie ihre Leistungen und Schwerpunkte aufgef{\"u}hrt, die Betroffene bei weiteren Anliegen aufsuchen k{\"o}nnen, um Unterst{\"u}tzung zu erhalten. Im Rahmen dieser Bachelorarbeit fokussiert sich das Projekt auf die Migrationsgruppe der Gefl{\"u}chteten sowie ihre Fragen, Herausforderungen und Bed{\"u}rfnisse in Deutschland.}, language = {de} } @article{Timme2022, author = {Timme, Michael}, title = {Beweislast beim gutgl{\"a}ubigen Erwerb eines Kraftfahrzeugs ohne Erhalt der Zulassungsbescheinigung Teil II — Zugleich eine Besprechung von BGH, Urt. v. 23.9.2022 - V ZR 148/21, MDR 2022, 1542}, series = {Monatsschrift f{\"u}r Deutsches Recht}, volume = {77}, journal = {Monatsschrift f{\"u}r Deutsches Recht}, number = {1}, publisher = {Verlag Dr. Otto Schmidt}, address = {K{\"o}ln}, issn = {0340-1812}, doi = {doi.org/10.9785/mdtr-2023-770102}, pages = {r5 -- r7}, year = {2022}, abstract = {Im Handel mit Kraftfahrzeugen geh{\"o}ren Aspekte des gutgl{\"a}ubigen Erwerbs zu den beinahe allt{\"a}glichen Standardproblemen. Der BGH f{\"u}gt in seiner Entscheidung v. 23.9.2022-VZR148/21, MDR 2022, 1541 diesem im Detail breit gef{\"a}cherten Themenfeld einen weiteren Mosaikstein hinzu: Der Erwerber erhielt das verkaufte Kfz ohne {\"U}bergabe einer Zulassungsbescheinigung Teil II, behauptet aber, diese Bescheinigung sei dem vom ihm eingeschalteten Vermittler bei Erwerb (als F{\"a}lschung) vorgelegt worden. Tats{\"a}chlich befand sich das Original durchg{\"a}ngig beim wahren Eigent{\"u}mer, der nunmehr Herausgabe des Fahrzeugs verlangt. Der BGH sch{\"u}tzt in dieser Gestaltung im Ergebnis den Erwerber. Die Entscheidung ist in mehrfacher Hinsicht bemerkenswert.}, language = {de} } @article{MarinkovićButenweg2022, author = {Marinković, Marko and Butenweg, Christoph}, title = {Experimental testing of decoupled masonry infills with steel anchors for out-of-plane support under combined in-plane and out-of-plane seismic loading}, series = {Construction and Building Materials}, volume = {318}, journal = {Construction and Building Materials}, number = {1}, editor = {Ford, Michael C.}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1879-0526}, doi = {10.1016/j.conbuildmat.2021.126041}, year = {2022}, abstract = {Because of simple construction process, high energy efficiency, significant fire resistance and excellent sound isolation, masonry infilled reinforced concrete (RC) frame structures are very popular in most of the countries in the world, as well as in seismic active areas. However, many RC frame structures with masonry infills were seriously damaged during earthquake events, as the traditional infills are generally constructed with direct contact to the RC frame which brings undesirable infill/frame interaction. This interaction leads to the activation of the equivalent diagonal strut in the infill panel, due to the RC frame deformation, and combined with seismically induced loads perpendicular to the infill panel often causes total collapses of the masonry infills and heavy damages to the RC frames. This fact was the motivation for developing different approaches for improving the behaviour of masonry infills, where infill isolation (decoupling) from the frame has been more intensively studied in the last decade. In-plane isolation of the infill wall reduces infill activation, but causes the need for additional measures to restrain out-of-plane movements. This can be provided by installing steel anchors, as proposed by some researchers. Within the framework of European research project INSYSME (Innovative Systems for Earthquake Resistant Masonry Enclosures in Reinforced Concrete Buildings) the system based on a use of elastomers for in-plane decoupling and steel anchors for out-of-plane restrain was tested. This constructive solution was tested and deeply investigated during the experimental campaign where traditional and decoupled masonry infilled RC frames with anchors were subjected to separate and combined in-plane ‬and out-of-plane loading. Based on a detailed evaluation and comparison of the test results, the performance and effectiveness of the developed system are illustrated.}, language = {en} } @article{RossiWinandsButenweg2022, author = {Rossi, Leonardo and Winands, Mark H. M. and Butenweg, Christoph}, title = {Monte Carlo Tree Search as an intelligent search tool in structural design problems}, series = {Engineering with Computers : An International Journal for Simulation-Based Engineering}, volume = {38}, journal = {Engineering with Computers : An International Journal for Simulation-Based Engineering}, number = {4}, editor = {Zhang, Jessica}, publisher = {Springer Nature}, address = {Cham}, issn = {1435-5663}, doi = {10.1007/s00366-021-01338-2}, pages = {3219 -- 3236}, year = {2022}, abstract = {Monte Carlo Tree Search (MCTS) is a search technique that in the last decade emerged as a major breakthrough for Artificial Intelligence applications regarding board- and video-games. In 2016, AlphaGo, an MCTS-based software agent, outperformed the human world champion of the board game Go. This game was for long considered almost infeasible for machines, due to its immense search space and the need for a long-term strategy. Since this historical success, MCTS is considered as an effective new approach for many other scientific and technical problems. Interestingly, civil structural engineering, as a discipline, offers many tasks whose solution may benefit from intelligent search and in particular from adopting MCTS as a search tool. In this work, we show how MCTS can be adapted to search for suitable solutions of a structural engineering design problem. The problem consists of choosing the load-bearing elements in a reference reinforced concrete structure, so to achieve a set of specific dynamic characteristics. In the paper, we report the results obtained by applying both a plain and a hybrid version of single-agent MCTS. The hybrid approach consists of an integration of both MCTS and classic Genetic Algorithm (GA), the latter also serving as a term of comparison for the results. The study's outcomes may open new perspectives for the adoption of MCTS as a design tool for civil engineers.}, language = {en} } @inproceedings{Gaigall2022, author = {Gaigall, Daniel}, title = {On Consistent Hypothesis Testing In General Hilbert Spaces}, publisher = {Avestia Publishing}, address = {Orl{\´e}ans, Kanada}, doi = {10.11159/icsta22.157}, pages = {Paper No. 157}, year = {2022}, abstract = {Inference on the basis of high-dimensional and functional data are two topics which are discussed frequently in the current statistical literature. A possibility to include both topics in a single approach is working on a very general space for the underlying observations, such as a separable Hilbert space. We propose a general method for consistently hypothesis testing on the basis of random variables with values in separable Hilbert spaces. We avoid concerns with the curse of dimensionality due to a projection idea. We apply well-known test statistics from nonparametric inference to the projected data and integrate over all projections from a specific set and with respect to suitable probability measures. In contrast to classical methods, which are applicable for real-valued random variables or random vectors of dimensions lower than the sample size, the tests can be applied to random vectors of dimensions larger than the sample size or even to functional and high-dimensional data. In general, resampling procedures such as bootstrap or permutation are suitable to determine critical values. The idea can be extended to the case of incomplete observations. Moreover, we develop an efficient algorithm for implementing the method. Examples are given for testing goodness-of-fit in a one-sample situation in [1] or for testing marginal homogeneity on the basis of a paired sample in [2]. Here, the test statistics in use can be seen as generalizations of the well-known Cram{\´e}rvon-Mises test statistics in the one-sample and two-samples case. The treatment of other testing problems is possible as well. By using the theory of U-statistics, for instance, asymptotic null distributions of the test statistics are obtained as the sample size tends to infinity. Standard continuity assumptions ensure the asymptotic exactness of the tests under the null hypothesis and that the tests detect any alternative in the limit. Simulation studies demonstrate size and power of the tests in the finite sample case, confirm the theoretical findings, and are used for the comparison with concurring procedures. A possible application of the general approach is inference for stock market returns, also in high data frequencies. In the field of empirical finance, statistical inference of stock market prices usually takes place on the basis of related log-returns as data. In the classical models for stock prices, i.e., the exponential L{\´e}vy model, Black-Scholes model, and Merton model, properties such as independence and stationarity of the increments ensure an independent and identically structure of the data. Specific trends during certain periods of the stock price processes can cause complications in this regard. In fact, our approach can compensate those effects by the treatment of the log-returns as random vectors or even as functional data.}, language = {en} } @article{DitzhausGaigall2022, author = {Ditzhaus, Marc and Gaigall, Daniel}, title = {Testing marginal homogeneity in Hilbert spaces with applications to stock market returns}, series = {Test}, volume = {2022}, journal = {Test}, number = {31}, publisher = {Springer}, issn = {1863-8260}, doi = {10.1007/s11749-022-00802-5}, pages = {749 -- 770}, year = {2022}, abstract = {This paper considers a paired data framework and discusses the question of marginal homogeneity of bivariate high-dimensional or functional data. The related testing problem can be endowed into a more general setting for paired random variables taking values in a general Hilbert space. To address this problem, a Cram{\´e}r-von-Mises type test statistic is applied and a bootstrap procedure is suggested to obtain critical values and finally a consistent test. The desired properties of a bootstrap test can be derived that are asymptotic exactness under the null hypothesis and consistency under alternatives. Simulations show the quality of the test in the finite sample case. A possible application is the comparison of two possibly dependent stock market returns based on functional data. The approach is demonstrated based on historical data for different stock market indices.}, language = {en} } @article{GaigallGerstenbergTrinh2022, author = {Gaigall, Daniel and Gerstenberg, Julian and Trinh, Thi Thu Ha}, title = {Empirical process of concomitants for partly categorial data and applications in statistics}, series = {Bernoulli}, volume = {28}, journal = {Bernoulli}, number = {2}, publisher = {International Statistical Institute}, address = {Den Haag, NL}, issn = {1573-9759}, doi = {10.3150/21-BEJ1367}, pages = {803 -- 829}, year = {2022}, abstract = {On the basis of independent and identically distributed bivariate random vectors, where the components are categorial and continuous variables, respectively, the related concomitants, also called induced order statistic, are considered. The main theoretical result is a functional central limit theorem for the empirical process of the concomitants in a triangular array setting. A natural application is hypothesis testing. An independence test and a two-sample test are investigated in detail. The fairly general setting enables limit results under local alternatives and bootstrap samples. For the comparison with existing tests from the literature simulation studies are conducted. The empirical results obtained confirm the theoretical findings.}, language = {en} } @inproceedings{StaatTran2022, author = {Staat, Manfred and Tran, Ngoc Trinh}, title = {Strain based brittle failure criteria for rocks}, series = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, booktitle = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, publisher = {Nha xuat ban Khoa hoc tu nhien va Cong nghe (Verlag Naturwissenschaft und Technik)}, address = {Hanoi}, isbn = {978-604-357-084-7}, pages = {500 -- 509}, year = {2022}, abstract = {When confining pressure is low or absent, extensional fractures are typical, with fractures occurring on unloaded planes in rock. These "paradox" fractures can be explained by a phenomenological extension strain failure criterion. In the past, a simple empirical criterion for fracture initiation in brittle rock has been developed. But this criterion makes unrealistic strength predictions in biaxial compression and tension. A new extension strain criterion overcomes this limitation by adding a weighted principal shear component. The weight is chosen, such that the enriched extension strain criterion represents the same failure surface as the Mohr-Coulomb (MC) criterion. Thus, the MC criterion has been derived as an extension strain criterion predicting failure modes, which are unexpected in the understanding of the failure of cohesive-frictional materials. In progressive damage of rock, the most likely fracture direction is orthogonal to the maximum extension strain. The enriched extension strain criterion is proposed as a threshold surface for crack initiation CI and crack damage CD and as a failure surface at peak P. Examples show that the enriched extension strain criterion predicts much lower volumes of damaged rock mass compared to the simple extension strain criterion.}, language = {en} } @misc{HueningBackes2022, author = {H{\"u}ning, Felix and Backes, Andreas}, title = {Wiegand-Modul}, year = {2022}, abstract = {Ein Wiegand-Modul (110;210;310) umfassend- eine Sensorspule (112;212;312),- einen ersten Wiegand-Draht (116a;216a;316a), der zumindest teilweise innerhalb der Sensorspule (112;212;312) angeordnet ist, und- einen zweiten Wiegand-Draht (116b;216b;316b), der zumindest teilweise innerhalb der Sensorspule (112;212;312) angeordnet ist und sich im Wesentlichen parallel zu dem ersten Wiegand-Draht (116a;216a;316a) erstreckt, ist bekannt.Um eine effiziente Ausnutzung der durch die Ummagnetisierung der Wiegand-Dr{\"a}hte (116a,116b;216a,216b;316a,316b) in die Sensorspule (112;212;312) induzierten elektrischen Energie zu erm{\"o}glichen, sind der erste Wiegand-Draht (116a;216a;316a) und der zweite Wiegand-Draht (116b;216b;316b) bezogen auf eine axiale Richtung der Sensorspule (112;212;312) versetzt zueinander angeordnet.}, language = {de} } @incollection{EngelmannBaumann2022, author = {Engelmann, Ulrich M. and Baumann, Martin}, title = {Moderationsexpertise f{\"u}r QMBs - das Mindset}, series = {Qualit{\"a}tsmanagement im Gesundheitswesen}, booktitle = {Qualit{\"a}tsmanagement im Gesundheitswesen}, editor = {Herbig, Nicola and Poppelreuter, Stefan}, edition = {59. Update}, publisher = {T{\"U}V-Verlag}, address = {K{\"o}ln}, isbn = {978-3-8249-0714-4}, pages = {Kapitel 10814}, year = {2022}, abstract = {Teamsitzungen, Arbeitsgruppentreffen, Kickoffs und Meetings - sie alle werden mit dem Ziel durchgef{\"u}hrt, innerhalb einer vorgegebenen Zeitspanne ein gemeinsames Arbeitsziel zu erreichen. Damit die Zielerreichung auch bei komplexeren Arbeitsauftr{\"a}gen nicht vom Zufall abh{\"a}ngt, empfiehlt es sich, die Leitung des Ablaufs einem Moderator zu {\"u}bertragen. In diesem Beitrag einer mehrteiligen Serie wird beschrieben, {\"u}ber welches Mindset der Moderator verf{\"u}gen sollte, welche grunds{\"a}tzlichen Methoden hilfreich sind und was bei der Onlinemoderation im Besonderen zu beachten ist.}, language = {de} } @inproceedings{Butenweg2022, author = {Butenweg, Christoph}, title = {Seismic design and evaluation of industrial facilities}, series = {Progresses in European Earthquake Engineering and Seismology. Third European Conference on Earthquake Engineering and Seismology - Bucharest, 2022}, booktitle = {Progresses in European Earthquake Engineering and Seismology. Third European Conference on Earthquake Engineering and Seismology - Bucharest, 2022}, editor = {Vacareanu, Radu and Ionescu, Constantin}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-15103-3}, issn = {2524-342X}, doi = {10.1007/978-3-031-15104-0}, pages = {449 -- 464}, year = {2022}, abstract = {Industrial facilities must be thoroughly designed to withstand seismic actions as they exhibit an increased loss potential due to the possibly wideranging damage consequences and the valuable process engineering equipment. Past earthquakes showed the social and political consequences of seismic damage to industrial facilities and sensitized the population and politicians worldwide for the possible hazard emanating from industrial facilities. However, a holistic approach for the seismic design of industrial facilities can presently neither be found in national nor in international standards. The introduction of EN 1998-4 of the new generation of Eurocode 8 will improve the normative situation with specific seismic design rules for silos, tanks and pipelines and secondary process components. The article presents essential aspects of the seismic design of industrial facilities based on the new generation of Eurocode 8 using the example of tank structures and secondary process components. The interaction effects of the process components with the primary structure are illustrated by means of the experimental results of a shaking table test of a three story moment resisting steel frame with different process components. Finally, an integrated approach of digital plant models based on building information modelling (BIM) and structural health monitoring (SHM) is presented, which provides not only a reliable decision-making basis for operation, maintenance and repair but also an excellent tool for rapid assessment of seismic damage.}, language = {en} } @incollection{GkatzogiasVeljkovivPohorylesetal.2022, author = {Gkatzogias, Konstantinos and Veljkoviv, Ana and Pohoryles, Daniel A. and Tsionis, Georgios and Bournas, Dionysios A. and Crowley, Helen and Norl{\´e}n, Hedvig and Butenweg, Christoph and Gervasio, Helena and Manfredi, Vincenzo and Masi, Angelo and Zaharieva, Roumiana}, title = {Policy practice and regional impact assessment for building renovation}, series = {REEBUILD Integrated Techniques for the Seismic Strengthening \& Energy Efficiency of Existing Buildings}, booktitle = {REEBUILD Integrated Techniques for the Seismic Strengthening \& Energy Efficiency of Existing Buildings}, editor = {Gkatzogias, Konstantinos and Tsionis, Georgios}, publisher = {Publications Office of the European Union}, address = {Luxembourg}, isbn = {978-92-76-60454-9}, issn = {1831-9424}, doi = {10.2760/883122}, pages = {1 -- 68}, year = {2022}, abstract = {The work presented in this report provides scientific support to building renovation policies in the EU by promoting a holistic point of view on the topic. Integrated renovation can be seen as a nexus between European policies on disaster resilience, energy efficiency and circularity in the building sector. An overview of policy measures for the seismic and energy upgrading of buildings across EU Member States identified only a few available measures for combined upgrading. Regulatory framework, financial instruments and digital tools similar to those for energy renovation, together with awareness and training may promote integrated renovation. A framework for regional prioritisation of building renovation was put forward, considering seismic risk, energy efficiency, and socioeconomic vulnerability independently and in an integrated way. Results indicate that prioritisation of building renovation is a multidimensional problem. Depending on priorities, different integrated indicators should be used to inform policies and accomplish the highest relative or most spread impact across different sectors. The framework was further extended to assess the impact of renovation scenarios across the EU with a focus on priority regions. Integrated renovation can provide a risk-proofed, sustainable, and inclusive built environment, presenting an economic benefit in the order of magnitude of the highest benefit among the separate interventions. Furthermore, it presents the unique capability of reducing fatalities and energy consumption at the same time and, depending on the scenario, to a greater extent.}, language = {en} } @incollection{WeberBomholtButenweg2022, author = {Weber, Felix and Bomholt, Frederik and Butenweg, Christoph}, title = {Erdbeben- und Schwingungsschutz von Bauwerken}, series = {2023 BetonKalender: Wasserundurchl{\"a}ssiger Beton, Br{\"u}ckenbau}, booktitle = {2023 BetonKalender: Wasserundurchl{\"a}ssiger Beton, Br{\"u}ckenbau}, editor = {Bergmeister, Konrad and Fingerloos, Frank and W{\"o}rner, Johann-Dietrich}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {9783433611180}, doi = {10.1002/9783433611180.ch16}, pages = {779 -- 859}, year = {2022}, abstract = {Dieser Beitrag beschreibt die herk{\"o}mmlichen Maßnahmen wie die Kapazit{\"a}tsbemessung der Tragwerksstruktur, die Isolation des Bauwerks mittels Basisisolatoren, die D{\"a}mpfungserh{\"o}hung der Struktur mittels Inter-Story-D{\"a}mpfern und die Schwingungsreduktion mittels Schwingungstilgern gegen Einwirkungen durch Erdbeben, Wind, Verkehr und Personen auf die Bauwerke. Erg{\"a}nzend wird die erdbebengerechte Auslegung und Isolation von nichttragenden Bauteilen behandelt. F{\"u}r die betrachteten Systeme werden die Bewegungsdifferenzialgleichungen unter Ber{\"u}cksichtigung der wesentlichen Nichtlinearit{\"a}ten angegeben. Die vorgestellten Weiterentwicklungen in den Bereichen der Basisisolatoren, D{\"a}mpfern und Schwingungstilgern zeigen, dass das modellbasierte Design mittels Simulation ein sehr effektives, {\"o}konomisches und dank der heutigen Computerleistung auch zeiteffizientes Werkzeug darstellt.}, language = {de} } @inproceedings{EvansBraunUlmeretal.2022, author = {Evans, Benjamin and Braun, Sebastian and Ulmer, Jessica and Wollert, J{\"o}rg}, title = {AAS implementations - current problems and solutions}, series = {20th International Conference on Mechatronics - Mechatronika (ME)}, booktitle = {20th International Conference on Mechatronics - Mechatronika (ME)}, publisher = {IEEE}, isbn = {978-1-6654-1040-3}, doi = {10.1109/ME54704.2022.9982933}, pages = {6 Seiten}, year = {2022}, abstract = {The fourth industrial revolution presents a multitude of challenges for industries, one of which being the increased flexibility required of manufacturing lines as a result of increased consumer demand for individualised products. One solution to tackle this challenge is the digital twin, more specifically the standardised model of a digital twin also known as the asset administration shell. The standardisation of an industry wide communications tool is a critical step in enabling inter-company operations. This paper discusses the current state of asset administration shells, the frameworks used to host them and their problems that need to be addressed. To tackle these issues, we propose an event-based server capable of drastically reducing response times between assets and asset administration shells and a multi-agent system used for the orchestration and deployment of the shells in the field.}, language = {en} } @article{BaringhausGaigall2022, author = {Baringhaus, Ludwig and Gaigall, Daniel}, title = {A goodness-of-fit test for the compound Poisson exponential model}, series = {Journal of Multivariate Analysis}, volume = {195}, journal = {Journal of Multivariate Analysis}, number = {Article 105154}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0047-259X}, doi = {10.1016/j.jmva.2022.105154}, year = {2022}, abstract = {On the basis of bivariate data, assumed to be observations of independent copies of a random vector (S,N), we consider testing the hypothesis that the distribution of (S,N) belongs to the parametric class of distributions that arise with the compound Poisson exponential model. Typically, this model is used in stochastic hydrology, with N as the number of raindays, and S as total rainfall amount during a certain time period, or in actuarial science, with N as the number of losses, and S as total loss expenditure during a certain time period. The compound Poisson exponential model is characterized in the way that a specific transform associated with the distribution of (S,N) satisfies a certain differential equation. Mimicking the function part of this equation by substituting the empirical counterparts of the transform we obtain an expression the weighted integral of the square of which is used as test statistic. We deal with two variants of the latter, one of which being invariant under scale transformations of the S-part by fixed positive constants. Critical values are obtained by using a parametric bootstrap procedure. The asymptotic behavior of the tests is discussed. A simulation study demonstrates the performance of the tests in the finite sample case. The procedure is applied to rainfall data and to an actuarial dataset. A multivariate extension is also discussed.}, language = {en} } @article{TranTrinhDaoetal.2022, author = {Tran, Ngoc Trinh and Trinh, Tu Luc and Dao, Ngoc Tien and Giap, Van Tan and Truong, Manh Khuyen and Dinh, Thuy Ha and Staat, Manfred}, title = {FEM shakedown analysis of structures under random strength with chance constrained programming}, series = {Vietnam Journal of Mechanics}, volume = {44}, journal = {Vietnam Journal of Mechanics}, number = {4}, publisher = {Vietnam Academy of Science and Technology (VAST)}, issn = {0866-7136}, doi = {10.15625/0866-7136/17943}, pages = {459 -- 473}, year = {2022}, abstract = {Direct methods, comprising limit and shakedown analysis, are a branch of computational mechanics. They play a significant role in mechanical and civil engineering design. The concept of direct methods aims to determine the ultimate load carrying capacity of structures beyond the elastic range. In practical problems, the direct methods lead to nonlinear convex optimization problems with a large number of variables and constraints. If strength and loading are random quantities, the shakedown analysis can be formulated as stochastic programming problem. In this paper, a method called chance constrained programming is presented, which is an effective method of stochastic programming to solve shakedown analysis problems under random conditions of strength. In this study, the loading is deterministic, and the strength is a normally or lognormally distributed variable.}, language = {en} } @incollection{BensbergCzarneckiGrob2022, author = {Bensberg, Frank and Czarnecki, Christian and Grob, Heinz Lothar}, title = {Wirtschaftlichkeitsbewertung von Smart Services mit vollst{\"a}ndigen Finanzpl{\"a}nen}, series = {Smart Services: Band 1: Konzepte - Methoden - Prozesse}, booktitle = {Smart Services: Band 1: Konzepte - Methoden - Prozesse}, editor = {Bruhn, Manfred and Hadwich, Karsten}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-37344-3 (Online)}, doi = {10.1007/978-3-658-37344-3_6}, pages = {225 -- 251}, year = {2022}, abstract = {Dieser Beitrag stellt einen Bewertungsrahmen f{\"u}r Smart Services vor, der auf dem Konzept vollst{\"a}ndiger Finanzpl{\"a}ne (VOFI) basiert. Zun{\"a}chst wird eine IoT-Architektur f{\"u}r Smart Services eingef{\"u}hrt, die die Grundlage f{\"u}r deren Betrachtung aus Sicht der Unternehmensplanung liefert. Hierauf aufbauend wird ein Bewertungsrahmen f{\"u}r die finanzplanorientierte Wirtschaftlichkeitsbewertung von Smart Services geschaffen, mit dem die relevanten Zahlungsfolgen differenziert erfasst werden. Mithilfe des entwickelten VOFI-Systems wird anschließend aufgezeigt, wie mithilfe einer Risikoanalyse die Unsicherheit von Modellparametern ber{\"u}cksichtigt werden kann.}, language = {de} } @article{MuellerSeginWeigandetal.2022, author = {Mueller, Tobias and Segin, Alexander and Weigand, Christoph and Schmitt, Robert H.}, title = {Feature selection for measurement models}, series = {International journal of quality \& reliability management}, journal = {International journal of quality \& reliability management}, number = {Vol. ahead-of-print, No. ahead-of-print.}, publisher = {Emerald Group Publishing Limited}, address = {Bingley}, issn = {0265-671X}, doi = {10.1108/IJQRM-07-2021-0245}, year = {2022}, abstract = {Purpose In the determination of the measurement uncertainty, the GUM procedure requires the building of a measurement model that establishes a functional relationship between the measurand and all influencing quantities. Since the effort of modelling as well as quantifying the measurement uncertainties depend on the number of influencing quantities considered, the aim of this study is to determine relevant influencing quantities and to remove irrelevant ones from the dataset. Design/methodology/approach In this work, it was investigated whether the effort of modelling for the determination of measurement uncertainty can be reduced by the use of feature selection (FS) methods. For this purpose, 9 different FS methods were tested on 16 artificial test datasets, whose properties (number of data points, number of features, complexity, features with low influence and redundant features) were varied via a design of experiments. Findings Based on a success metric, the stability, universality and complexity of the method, two FS methods could be identified that reliably identify relevant and irrelevant influencing quantities for a measurement model. Originality/value For the first time, FS methods were applied to datasets with properties of classical measurement processes. The simulation-based results serve as a basis for further research in the field of FS for measurement models. The identified algorithms will be applied to real measurement processes in the future.}, language = {en} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {kirchen-bauhaus? - Die Kunstgewerbeschule in Aachen unter Rudolf Schwarz}, series = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932}, booktitle = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932}, editor = {Soldwisch, Ines and Schmitz, Stefan}, publisher = {Aachener Karnevalsverein (AKV)}, address = {Aachen}, isbn = {978-3-9825016-0-4}, pages = {54 -- 65}, year = {2022}, language = {de} } @masterthesis{Laubkermeier2022, type = {Bachelor Thesis}, author = {Laubkermeier, Kim}, title = {trust me}, publisher = {FH Aachen}, address = {Aachen}, pages = {94 Seiten}, year = {2022}, abstract = {"trust me" ist eine schwarz-weiß Fotoserie, pr{\"a}sentiert als Diashow mit unterlegtem Soundtrack. Es geht um das Vertrauen zwischen Model, Fotografin und Betrachter:innen. Die Darsteller sind ausschließlich homosexuelle M{\"a}nner und begeben sich in intime Situationen und Posen. Die Fotos sind {\"u}berwiegend Aktaufnahmen und nehmen eine pornografische Richtung an. Die Fragestellung zu Beginn war, wie weit vertrauen die unerfahrenen Models der Fotografin und was sind diese bereit, von sich zu zeigen. Die offene Kommunikation {\"u}ber die Richtung des Projekts war die essenzielle Basis f{\"u}r die Fotoshootings. W{\"a}hrend des Fotografierens lag der Fokus auf m{\"o}glichst verschiedenen Blickwinkeln, Kulissen, Ausleuchtungen und Motiven. Zus{\"a}tzlich war der sensible Umgang mit den M{\"a}nnern eine Vertrauensprobe."trust me" l{\"a}sst auf diversen Ebenen tief blicken und zeigt, wie loslassen aussieht.}, language = {de} } @masterthesis{Surowiec2022, type = {Bachelor Thesis}, author = {Surowiec, Julia Andrea}, title = {Das wahre Gewicht des Smartphones : eine informative Erfahrung zu den {\"o}kologischen Auswirkungen}, publisher = {FH Aachen}, address = {Aachen}, pages = {70 Seiten}, year = {2022}, abstract = {Das Smartphone geh{\"o}rt zu den innovativsten Ger{\"a}ten unserer Zeit und befindet sich in einem st{\"a}ndigen Wandel, der nach immer mehr Leistung, gr{\"o}ßeren Displays und besseren Kameras strebt. Mit neuen Modellen, die j{\"a}hrlich auf den Markt kommen und den Milliarden Smartphones, die verkauft werden, entsteht aber nicht nur ein großer Markt voller Angebote, sondern gleichzeitig große Probleme f{\"u}r unsere Umwelt und letztlich auch f{\"u}r uns. Die Smartphone-Industrie schadet massiv unserem {\"O}kosystem. Das Ziel der Arbeit ist die Aufkl{\"a}rung {\"u}ber die Auswirkungen der Smartphone-Industrie. Daf{\"u}r wurden Visualisierung zu Daten und Prozessen gestaltet, die viele Aspekte des Lebenszyklus des Smartphones mit einbeziehen. Die Betrachter:innen sollen so informativ aufgekl{\"a}rt werden, ihren eigenen Konsum zu dem Thema {\"u}berdenken und ein Bewusstsein f{\"u}r ihren Elektronikverbrauch entwickeln.}, language = {de} } @article{RuebbelkeVoegeleGrajewskietal.2022, author = {R{\"u}bbelke, Dirk and V{\"o}gele, Stefan and Grajewski, Matthias and Zobel, Luzy}, title = {Hydrogen-based steel production and global climate protection: An empirical analysis of the potential role of a European cross border adjustment mechanism}, series = {Journal of Cleaner Production}, volume = {380}, journal = {Journal of Cleaner Production}, number = {Part 2, Art. Nr.:135040}, publisher = {Elsevier}, issn = {0959-6526}, doi = {10.1016/j.jclepro.2022.135040}, year = {2022}, abstract = {The European Union's aim to become climate neutral by 2050 necessitates ambitious efforts to reduce carbon emissions. Large reductions can be attained particularly in energy intensive sectors like iron and steel. In order to prevent the relocation of such industries outside the EU in the course of tightening environmental regulations, the establishment of a climate club jointly with other large emitters and alternatively the unilateral implementation of an international cross-border carbon tax mechanism are proposed. This article focuses on the latter option choosing the steel sector as an example. In particular, we investigate the financial conditions under which a European cross border mechanism is capable to protect hydrogen-based steel production routes employed in Europe against more polluting competition from abroad. By using a floor price model, we assess the competitiveness of different steel production routes in selected countries. We evaluate the climate friendliness of steel production on the basis of specific GHG emissions. In addition, we utilize an input-output price model. It enables us to assess impacts of rising cost of steel production on commodities using steel as intermediates. Our results raise concerns that a cross-border tax mechanism will not suffice to bring about competitiveness of hydrogen-based steel production in Europe because the cost tends to remain higher than the cost of steel production in e.g. China. Steel is a classic example for a good used mainly as intermediate for other products. Therefore, a cross-border tax mechanism for steel will increase the price of products produced in the EU that require steel as an input. This can in turn adversely affect competitiveness of these sectors. Hence, the effects of higher steel costs on European exports should be borne in mind and could require the cross-border adjustment mechanism to also subsidize exports.}, language = {en} } @masterthesis{Theis2022, type = {Bachelor Thesis}, author = {Theis, Alina Naomi}, title = {Nur ein Freitag : Ein Kurzfilm {\"u}ber Verlust und Freundschaft im Schatten des Zweiten Weltkrieges.}, publisher = {FH Aachen}, address = {Aachen}, pages = {103 Seiten}, year = {2022}, abstract = {Der Film zeigt die wahre Geschichte des 15-j{\"a}hrigen Hans Jokisch, welche auf den Erz{\"a}hlungen seiner j{\"u}ngeren Schwester, der Zeitzeugin Maria Theis (geb. Jokisch), beruhen. Der Fokus liegt auf der Sichtweise von Kindern und Jugendlichen, einer Generation, die mit dem und im Zweiten Weltkrieg aufgewachsen ist und die gleichzeitig die letzte Generation ist, die uns das Erlebte noch aus erster Hand berichten kann. Hans gelangt mit seiner Familie nach einer harten Flucht vor der Frontlinie zur{\"u}ck in seine Heimat in Schlesien. Doch ihr geliebtes Heim ist besetzt von Familie Sch{\"o}ppe. Sie haben keine Wahl, die beiden Familien m{\"u}ssen sich das Haus von nun an teilen. Im Laufe der Zeit wird das Jokisch Haus auch f{\"u}r Familie Sch{\"o}ppe ein Zuhause und Hans freundet sich mit dem Jungen Bruno Sch{\"o}ppe an. Als Deutschland 1945 kapituliert und Schlesien nun zu Polen geh{\"o}rt, m{\"u}ssen pl{\"o}tzlich beide Familien endg{\"u}ltig das Haus und all ihren Besitz zur{\"u}cklassen. Hans und Bruno beschließen, die Zwangsenteignung nicht hinzunehmen, doch ihr naiver Plan wird ihnen fast zum Verh{\"a}ngnis.}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Ein Entwurf f{\"u}r die Umnutzung der Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, booktitle = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {71 -- 74}, year = {2022}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Die Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der J{\"u}dische Friedhof Aachen}, booktitle = {Der J{\"u}dische Friedhof Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {51 -- 69}, year = {2022}, language = {de} } @book{LaumannFeldmannFrickeletal.2022, author = {Laumann, J{\"o}rg and Feldmann, Markus and Frickel, J{\"o}rg and Krahwinkel, Manuel and Kraus, Matthias and Strangh{\"o}ner, Natalie and Ummenhofer, Thomas}, title = {Petersen Stahlbau : Grundlagen der Berechnung und baulichen Ausbildung von Stahlbauten}, edition = {5. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-20510-2}, doi = {10.1007/978-3-658-20510-2}, pages = {XXIII, 1919 Seiten}, year = {2022}, abstract = {Die Theorie und Konstruktion der wichtigsten Bereiche der Stahlbautechnik werden von den Grundlagen her entwickelt und durch viele Beispiele praxisbezogen erl{\"a}utert. Das Buch ist aus Vorlesungen im Grund- und Vertiefungsstudium des Bauingenieurwesens entstanden. Der Inhalt wird zum Teil systematisch, zum Teil exemplarisch dargestellt. F{\"u}r Konstrukteure und Statiker in den technischen B{\"u}ros, der Beratenden Ingenieure und der Pr{\"u}f{\"a}mter enth{\"a}lt das Buch aufbereitete Berechnungsverfahren und Konstruktionsvorschl{\"a}ge in großer Zahl.}, language = {de} } @article{KindmannKrausLaumannetal.2022, author = {Kindmann, Rolf and Kraus, Matthias and Laumann, J{\"o}rg and Vette, Jan}, title = {Verallgemeinerte Berechnungsmethode f{\"u}r in Beton eingespannte Stahlprofile - Einspanntiefen, Tragf{\"a}higkeitsnachweise und Bemessungshilfen}, series = {Stahlbau}, volume = {93}, journal = {Stahlbau}, number = {Early View}, publisher = {Ernst \& Sohn GmbH}, address = {Berlin}, issn = {1437-1049}, doi = {10.1002/stab.202200024}, pages = {1 -- 25}, year = {2022}, abstract = {St{\"u}tzen und Tr{\"a}ger aus Stahlprofilen k{\"o}nnen in Fundamente oder W{\"a}nde aus Stahlbeton einbetoniert werden. Diese Anschl{\"u}sse wirken in der Regel wie Einspannungen, die eine ausreichende Einspanntiefe erfordern. Im Folgenden wird eine verallgemeinerte Berechnungsmethode f{\"u}r in Stahlbetonkonstruktionen eingespannte Stahlprofile aus gewalzten I-Profilen, geschweißten I-Profilen, runden Hohlprofilen, eckigen Hohlprofilen und einzelligen Kastenquerschnitten vorgestellt. F{\"u}r Beanspruchungen infolge einachsiger Biegung um die starke und schwache Profilachse werden der profilabh{\"a}ngige Ansatz der Betondruckspannungen im Einspannbereich und die Ermittlung der Einspanntiefe behandelt. Unter Ber{\"u}cksichtigung der Normalkraft werden an den maßgebenden Stellen Tragf{\"a}higkeitsnachweise f{\"u}r die Stahlprofile gef{\"u}hrt. Als Erg{\"a}nzung zu den Berechnungsformeln werden Bemessungshilfen zur Verf{\"u}gung gestellt, die die Wahl der mitwirkenden Breiten und der Einspanntiefen erleichtert.}, language = {de} } @article{EmigHebelSchwark2022, author = {Emig, J. and Hebel, Christoph and Schwark, A.}, title = {Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-2}, pages = {727 -- 736}, year = {2022}, abstract = {In der Praxis bestehen vielf{\"a}ltige Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle. Mit ihnen k{\"o}nnen Kenngr{\"o}ßen des Verkehrsangebots und der Verkehrsnachfrage f{\"u}r den heutigen Zustand wie auch f{\"u}r zuk{\"u}nftige Zust{\"a}nde bereitgestellt werden, um so die Grundlagen f{\"u}r verkehrsplanerische Entscheidungen zu liefern. Die neuen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" (EVNM-PV) (FGSV 2022) veranschaulichen anhand von typischen Planungsaufgaben, welche differenzierten Anforderungen daraus f{\"u}r die Modellkonzeption und -erstellung resultieren. Vor dem Hintergrund der konkreten Aufgabenstellung sowie deren spezifischer planerischer Anforderungen bildet die abzuleitende Modellspezifikation die verabredete Grundlage zwischen Auftraggeber und Modellersteller f{\"u}r die konkrete inhaltliche, fachliche Ausgestaltung des Verkehrsmodells.}, language = {de} } @article{HahnHebelManz2022, author = {Hahn, Geogr W. and Hebel, Christoph and Manz, W.}, title = {Die neuen Empfehlungen f{\"u}r Verkehrsnachfragemodellierung im Personenverkehr}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-1}, pages = {721 -- 726}, year = {2022}, abstract = {Die neu erschienenen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" liefern erstmals als Empfehlungspapier der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen einen umfassenden {\"U}berblick zu den verschiedenen Aspekten der Modellierung und geben dem Fachplaner konkrete Hilfestellung f{\"u}r die Konzeption von Nachfragemodellen. Das Empfehlungspapier zielt unter anderem darauf ab, die Erwartungen und das Anspruchsniveau in Hinblick auf Sachgerechtigkeit der Modelle, die erzielbare Modellqualit{\"a}t und den Detaillierungsgrad der Modellaussagen zu harmonisieren.}, language = {de} } @masterthesis{Nelles2022, type = {Bachelor Thesis}, author = {Nelles, Charlene}, title = {Brain Hack}, publisher = {FH Aachen}, address = {Aachen}, pages = {77 Seiten}, year = {2022}, abstract = {Protagonistin des Films ist Cassandra Becker, eine 25-j{\"a}hrige Informatikstudentin und Mitglied der Hackerorganisation PFABW (Progress For a Better World). Sie hat es sich zum Ziel gesetzt, die Welt zu einem besseren Ort zu machen. Sie legt sich allerdings mit den falschen Leuten an und wird f{\"u}r die Verbreitung eines zerst{\"o}rerischen Computervirus verantwortlich gemacht, der gesundheitliche Folgen f{\"u}r den Menschen mit sich bringt. Sie und ihr bester Freund Jake Fischer haben bei einem PFABW-Mitglied Zuflucht gefunden. Dort versuchen sie gemeinsam herauszufinden, was es mit dem mysteri{\"o}sen Virus auf sich hat.}, language = {de} } @masterthesis{Schiffers2022, type = {Bachelor Thesis}, author = {Schiffers, Simon}, title = {Historische Stoffe im Spielfilm : Zwischen Authentizit{\"a}t und Unterhaltung}, publisher = {FH Aachen}, address = {Aachen}, pages = {107 Seiten}, year = {2022}, abstract = {Historische Stoffe im Spielfilm Zwischen Authentizit{\"a}t und Unterhaltung Spielfilme {\"u}ber wahre Begebenheiten stellen sich der Herausforderung, historisch korrekte Darstellung mit einer spannenden und sehenswerten Pr{\"a}sentation zu kombinieren. Dies ist ein schwieriger Balance Akt, gerade bei Studentenprojekten mit geringem Budget. Im Kurzfilm {\"u}ber Julius Erasmus, dem „Totengr{\"a}ber von Vossenack", wurde sich dieser Aufgabe gestellt. Inhaltlich werden seine m{\"o}glichen Beweggr{\"u}nde dargestellt, die ihn dazu brachten kurz nach dem 2. Weltkrieg zahlreiche gefallene Soldaten im ehemaligen Kampfgebiet im H{\"u}rtgenwald zu begraben. Die schriftliche Dokumentation des Projektes zeigt die Recherche des verfilmten Stoffes, Herausforderungen w{\"a}hrend der Produktion, sowie pers{\"o}nliche Eindr{\"u}cke und Lerneffekte. Letztendlich ist ein Werk entstanden, dass respektvoll mit der zu Grunde liegenden Geschichte umgeht und gleichsam ein cineastisches Erlebnis f{\"u}r den Zuschauer darstellt.}, language = {de} } @masterthesis{Treutlein2022, type = {Bachelor Thesis}, author = {Treutlein, Antonia}, title = {Entwicklung eines Erscheinungsbildes f{\"u}r die Meeresschutzorganisation Ocean Care}, publisher = {FH Aachen}, address = {Aachen}, pages = {99 Seiten}, year = {2022}, abstract = {Ocean Care ist eine politisch unabh{\"a}ngige Non-Profit-Organisation mit Sitz in der Schweiz. Sie setzt sich seit 1989 f{\"u}r den Schutz von Meeress{\"a}ugern und deren Lebensraum ein. Seit 2011 ist Ocean Care außerdem UN-Sonderberaterin f{\"u}r Fragen im Meeresschutz. Da Ocean Care die {\"O}ffentlichkeit f{\"u}r das Thema Meeresschutz sensibilisieren m{\"o}chte und ihre Arbeit durch Spenden finanziert wird, ist ein professionelles, vertrauenerweckendes Erscheinungsbild unerl{\"a}sslich. Durch ein zeitgem{\"a}ßes und seri{\"o}ses Design, welches sich von anderen Organisationen abhebt, kann die Zielgruppe erweitert und die Bedeutsamkeit der Arbeit hervorgehoben werden. Das neue Erscheinungsbild beruht auf der Idee, dass sich die Informationen unter der Meeresoberfl{\"a}che befinden. Die Linie, die den Meeresspiegel visualisiert, dient außerdem medien{\"u}bergreifend als Orientierungshilfe.}, language = {de} } @masterthesis{Wetzlar2022, type = {Bachelor Thesis}, author = {Wetzlar, Jana}, title = {Vielgut Festival 2022 : Etablierung eines neuen Musikfestivals in Aachen}, publisher = {FH Aachen}, address = {Aachen}, pages = {45 Seiten}, year = {2022}, abstract = {Endlich! Nach {\"u}ber zwei Jahren kulturellen Stillstands richtet der Musiknetzwerk Aachen e.V. ein Festival aus. Die Bachelorandin Jana Wetzlar {\"u}bernimmt hierbei die Veranstaltungsplanung und -bewerbung. Der erste Teil der Arbeit umfasst die Erarbeitung eines einzigartigen Festivalkonzepts, bei dem die F{\"o}rderung von jungen Newcomerk{\"u}nstler:innen und die {\"o}kologische Nachhaltigkeit der Veranstaltung im Vordergrund stehen. Eine weitere Besonderheit stellt das parit{\"a}tisch besetzte K{\"u}nstler:innen-Line-Up dar. Im zweiten Teil der Arbeit wurden eine umfangreiche Werbekampagne sowie ein passendes Corporate Design entwickelt, die die Besonderheiten des Festivals hervorheben und viele Festivalbesucher:innen generieren sollen. Die {\"u}bergeordneten Ziele der Arbeit bestehen darin, einen Beitrag zur gesellschaftlichen Etablierung des Musiknetzwerk Aachen e.V. zu leisten und die Voraussetzungen f{\"u}r ein j{\"a}hrlich wiederkehrendes Festival zu schaffen.}, language = {de} } @masterthesis{Wolf2022, type = {Bachelor Thesis}, author = {Wolf, Nina}, title = {Koexistieren : Die Stufen der Mensch-Tier-Beziehung - Vom Nutztier bis zum Personenrecht}, publisher = {FH Aachen}, address = {Aachen}, pages = {114 Seiten}, year = {2022}, abstract = {Seit 2002 ist der Tierschutz fest im Grundgesetz verankert, jedoch herrscht immer noch ein enormes Ungleichgewicht bei der letztendlichen Durchsetzung gegen{\"u}ber der Tiernutzungsinteressen. Die Nichteinhaltung des Tierschutzes stellt nicht nur aus Tierwohlsicht, sondern auch aus Klimaschutzgr{\"u}nden eine ernst zu nehmende Problematik dar, welche wir nur gemeinsam angehen k{\"o}nnen. Die Gesellschaft sollte sich {\"u}ber das eigene Konsumverhalten bewusst werden, gleichermaßen m{\"u}ssen auch {\"u}berzeugende Alternativen aufgezeigt werden. Thematisch ist die Arbeit in drei Teile gegliedert. Die Geschichte, das Recht der Tiere und die Zukunftsaussichten stehen hier im Fokus. Wichtig ist es, den Istzustand neutral darzustellen, um die Fakten nicht zu harmonisieren. Die Publikation soll nicht abschrecken, vielmehr soll sie die Leser:innen motivieren, Dinge {\"a}ndern zu wollen. Denn nur miteinander k{\"o}nnen wir friedlich „koexistieren".}, language = {de} } @masterthesis{IncemanCremer2022, type = {Bachelor Thesis}, author = {Inceman Cremer, Suzan}, title = {Kouyou : Ort im Raum}, publisher = {FH Aachen}, address = {Aachen}, pages = {85 Seiten}, year = {2022}, abstract = {Selbstliebe, der Moment der Ruhe, sich eine mentale Pause erlauben und von allem bewusst abzuschalten, sind aktuelle Themen unserer Gesellschaft. Die Zeit, in der wir leben, bewegt sich in einer Geschwindigkeit, die alle unsere Sinne {\"u}berlastet und uns nicht mehr erlaubt, selbst zuzuh{\"o}ren oder volle Momente der Ruhe zu erleben. Thema der Bachelorarbeit ist der Entwurf eines Sitzm{\"o}bels, welches inspiriert ist durch die sakralische Architektur. Der Stuhl soll das Gef{\"u}hl von Umformung und Leichtigkeit vermitteln. Er ist aus Eiche gebaut und unterst{\"u}tzt den Menschen in seiner bewussten Sitzhaltung. Die Eiche ist ein Baum, der f{\"u}r Kraft, Durchhalteverm{\"o}gen und Gerechtigkeit steht. Es heißt auch, wenn man eine Eiche sieht, sie umarmen soll, da sie heilende Kr{\"a}fte hat. Hier ist aber die Eiche, die den Menschen symbolisch umarmen soll, wenn man auf ihr sitzt. Und somit spielen Architektur, M{\"o}bel und der Mensch eine spielende Rolle, und zwar ist es die menschliche Haltung im Raum.}, language = {de} } @misc{Vogt2022, type = {Master Thesis}, author = {Vogt, Lena}, title = {Arch{\"a}ologischer Restaurator : Ausstellungskonzept R{\"o}misch-Germanisches Museum K{\"o}ln}, publisher = {FH Aachen}, address = {Aachen}, pages = {23 Seiten}, year = {2022}, abstract = {Alte, geschichtsrelevante und thematisch angeordnete Objekte, welche man in den Vitrinen der Museen betrachten kann, das kennt sicher jeder. Doch wie kommen diese Artefakte eigentlich in die Vitrinen? Welche Menschen sind daf{\"u}r verantwortlich, dass wir diese Kulturg{\"u}ter bestaunen k{\"o}nnen? In diesem tempor{\"a}ren Ausstellungskonzept f{\"u}r das R{\"o}misch-Germanische Museum K{\"o}ln geht es darum, die sonst verborgene Arbeit der Restauratoren des Museums f{\"u}r die Besucher:innen sichtbar zu machen, ihnen genauere Einblicke in die Arbeit mit ihren Anforderungen zu geben und Restaurierungsprozesse auf zu zeigen. Diese Arbeit demonstriert, wie es abseits der {\"O}ffentlichkeit aussieht und wer daf{\"u}r verantwortlich ist, dass wir einen Einblick in die vergangenen Zeit erhalten k{\"o}nnen. Das Projekt zeigt eine m{\"o}gliche Bespielung des Museums, wie das Berufsbild der Restauratoren in die Dauerausstellung integriert werden k{\"o}nnte.}, language = {de} } @masterthesis{Janssen2022, type = {Bachelor Thesis}, author = {Janssen, Hanna}, title = {UMGARNT : Handarbeit als Mittel zur Festigung der emotionalen Bindung zu M{\"o}belst{\"u}cken}, publisher = {FH Aachen}, address = {Aachen}, pages = {132 Seiten}, year = {2022}, abstract = {Nach drei Jahren ist der Anblick der beigen Kommode doch etwas langweilig geworden und es steht ein Tapetenwechsel an? Das ist noch lange kein Grund, neue M{\"o}bel kaufen zu m{\"u}ssen. Mit dem „BOBBI"-Regal l{\"a}sst sich das Farbkonzept des M{\"o}belst{\"u}cks fortlaufend anpassen. Das reduzierte Grundgestell basiert auf einem einfachen Stecksystem und erm{\"o}glicht nicht nur einen schnellen, intuitiven Aufbau, sondern auch eine modulare Erweiterung des Regalsystems. Eint{\"o}nig? Nein Danke! Zeitloses, langlebiges Design muss nicht schlicht und farblos sein! Der Schl{\"u}ssel liegt in der Individualisierbarkeit. Mithilfe einer einfachen textilen Bespannungstechnik passt der Kunde das Ger{\"u}st nach seinen Vorstellungen an. Auf diese Weise kann der Charakter des M{\"o}belst{\"u}cks nicht nur farblich, sondern auch strukturell regelm{\"a}ßig ver{\"a}ndert werden und tr{\"a}gt zu einer nachhaltigen und achtsamen Raumgestaltung bei.}, language = {de} } @masterthesis{TrinidadAvila2022, type = {Bachelor Thesis}, author = {Trinidad Avila, Maria Alejandra}, title = {Work Habitat : Modular-skalierbare Office Markenstrategie f{\"u}r rasant wachsende Startups}, publisher = {FH Aachen}, address = {Aachen}, pages = {141 Seiten}, year = {2022}, abstract = {„Work Habitat" ist eine markenorientierte Officel{\"o}sung, die auf skalierbare Weise mit einem Start-up mitw{\"a}chst und in Kooperation mit dem Unternehmen academa GmbH entstanden ist. Diese Brand Experience f{\"o}rdert Teambuilding und Identifikation mit dem Unternehmen. Sie passt sich an die Teammitglieder an, indem sie einen ganzheitlichen Blick auf das Office-System bewahrt. Ferner stellt sie eine nahtlose Verbindung digitaler und analoger Arbeitswelten dar und bietet eine einladende Umgebung verschiedener Arten zu Arbeiten an: von Deep-Focus bis zur kooperativen Zusammenarbeit und der Anregung zwangloser Begegnungen. Die modularen Komponenten k{\"o}nnen trotz Ver{\"a}nderungen, Umz{\"u}gen oder unerwartet rasanten Entwicklungen nachhaltig und flexibel eingesetzt werden. Eine schnelllebige Welt erfordert eine angebrachte, sich ihr anpassende New-Work-Umgebung.}, language = {de} } @masterthesis{Voth2022, type = {Bachelor Thesis}, author = {Voth, Emily}, title = {KiWA : Die Garderobe f{\"u}r kleine Selbstst{\"a}ndige}, publisher = {FH Aachen}, address = {Aachen}, pages = {117 Seiten}, year = {2022}, abstract = {Kindertagesst{\"a}tten bieten Kleinkindern den Zugang zu unbeschwertem und spielerischem Lernen. Was also, wenn schon der Eingangsbereich die Reiz{\"u}berflutung bereit h{\"a}lt, der Stauraum der Entfaltung der Kinder nicht gerecht wird und ihre Eigenst{\"a}ndigkeit ungef{\"o}rdert bleibt? Es kommt zu unzufriedenen Kindern und Frustration aller Beteilligten. "KIWA" ist das Garderobensystem f{\"u}r Kinder zur St{\"a}rkung der heranwachsenden Selbstst{\"a}ndigkeit. Mithilfe von pers{\"o}nlichen Wiedererkennungsmerkmalen wird Eigenverantwortung geschult. Leicht und sicher zu erreichender Stauraum sorgt f{\"u}r Ordnung. Spielerisches lernen trotz Ordnung.}, language = {de} } @masterthesis{Horvath2022, type = {Bachelor Thesis}, author = {Horvath, Nicolas}, title = {Neues Corporate Design f{\"u}r das Rautenstrauch Joest Museum K{\"o}ln}, publisher = {FH Aachen}, address = {Aachen}, pages = {138}, year = {2022}, abstract = {Der Mensch in seinen Welten - das Konzept des Rautenstrauch Joest Museums verfolgt den Ansatz des Kulturvergleichs und strebt im Zuge dessen die Betonung der Ebenb{\"u}rtigkeit aller Kulturen an. Die Sammlung unterteilt sich nicht - wie gewohnt - anhand geografischer Gesichtspunkte, sondern behandelt Themen, die Menschen auf der ganzen Welt besch{\"a}ftigen. Das in dieser Arbeit gestaltete neue Erscheinungsbild greift den ver{\"a}nderten gesellschaftlichen Stellenwert von ethnologischen Museen auf und positioniert das Museum als aktiven Diskussionsteilnehmer im Zuge des Postkolonialismus. Das entwickelte Key-Visual aus eigener Schrift, einheitlicher Rastersystematik und pr{\"a}gnantem Farbkonzept gibt einen Einblick darin, wie Menschen fr{\"u}her probiert haben, ihre Welt zu verstehen und sie zu erschließen.}, language = {de} } @masterthesis{Toma2022, type = {Bachelor Thesis}, author = {Toma, Paul}, title = {Scriptum : Geochronologische Darstellung der Schriftentstehung vom 33. Jh. v. Chr. bis heute}, publisher = {FH Aachen}, address = {Aachen}, pages = {159 Seiten}, year = {2022}, abstract = {Scriptum ist ein Interface mit Installationscharakter, welches die geschichtliche Entstehung von Schriftsystemen aus einer geochronologischen Perspektive darstellt. Die Installation wurde haupts{\"a}chlich f{\"u}r Museumsausstellungen konzipiert und besteht aus einer Wandprojektion, die durch iPads im Raum von mehreren Nutzern gleichzeitig gesteuert werden kann. Auf der Projektion sind alle 145 von Noto Sans unterst{\"u}tzten Schriftsysteme zu finden, die nach ihrer {\"o}rtlichen Entstehung auf einer Weltkarte platziert wurden. Die Arbeit beruht auf dem wissenschaftlichen Datensatz aus dem Projekt „The World's Writing Systems" aufrufbar unter www.worldswritingsystems.org. Neben dem Informierungszweck dient die Installation auch als ein Ausrufezeichen f{\"u}r die Idee, dass Schrift ein wichtiger Aspekt unseres Kulturerbes ist und als ein Spiegel f{\"u}r die Evolution der Menschheit betrachtet werden kann.}, language = {de} } @masterthesis{Meesters2022, type = {Bachelor Thesis}, author = {Meesters, Elena}, title = {Gestaltung eines h{\"a}uslichen Telemonitoringsystems zur Prognose kardialer Dekompensation}, publisher = {FH Aachen}, address = {Aachen}, pages = {113 Seiten}, year = {2022}, abstract = {Herzinsuffizienz ist eine der h{\"a}ufigsten Herzerkrankungen in Deutschland. Sie ist fortschreitend und nicht heilbar. Der Krankheitsverlauf ist gepr{\"a}gt von pl{\"o}tzlichen, z.T. lebensbedrohlichen Verschlechterungen und Krankenhauseinweisungen, nach denen die Leistung des Herzen vermindert bleibt. Diese Dekompensationen lassen sich bisher im heimischen Umfeld nicht durch Messwerte vorhersehen. Dieses Ger{\"a}t bestimmt die Fl{\"u}ssigkeitsansammlungen in der Lunge, die ein mittelfristiges Symptom einer Dekompensation sind. Außerdem misst es {\"u}ber einen Hautsensor die im Schweiß enthaltene Menge eines Proteins, das bei {\"U}berdehnung des Herzmuskels vermehrt im Blutplasma zu finden ist. So k{\"o}nnen Dekompensationen bis zu zwei Wochen vor einem akuten Ereignis detektiert und behandelt werden. Außerdem gibt es tagesformabh{\"a}ngige Tipps f{\"u}r die Alltagsgestaltung mit der Erkrankung.}, language = {de} } @article{MonakhovaSobolevaFedotovaetal.2022, author = {Monakhova, Yulia and Soboleva, Polina M. and Fedotova, Elena S. and Musina, Kristina T. and Burmistrova, Natalia A.}, title = {Quantum chemical calculations of IR spectra of heparin disaccharide subunits}, series = {Computational and Theoretical Chemistry}, volume = {1217}, journal = {Computational and Theoretical Chemistry}, number = {Article number: 113891}, publisher = {Elsevier}, address = {New York, NY}, isbn = {2210-271X}, doi = {10.1016/j.comptc.2022.113891}, year = {2022}, abstract = {Heparin is a natural polysaccharide, which plays essential role in many biological processes. Alterations in building blocks can modify biological roles of commercial heparin products, due to significant changes in the conformation of the polymer chain. The variability structure of heparin leads to difficulty in quality control using different analytical methods, including infrared (IR) spectroscopy. In this paper molecular modelling of heparin disaccharide subunits was performed using quantum chemistry. The structural and spectral parameters of these disaccharides have been calculated using RHF/6-311G. In addition, over-sulphated chondroitin sulphate disaccharide was studied as one of the most widespread contaminants of heparin. Calculated IR spectra were analyzed with respect to specific structure parameters. IR spectroscopic fingerprint was found to be sensitive to substitution pattern of disaccharide subunits. Vibrational assignments of calculated spectra were correlated with experimental IR spectral bands of native heparin. Chemometrics was used to perform multivariate analysis of simulated spectral data.}, language = {en} } @article{BurgerLindnerRumpfetal.2022, author = {Burger, Ren{\´e} and Lindner, Simon and Rumpf, Jessica and Do, Xuan Tung and Diehl, Bernd W.K. and Rehahn, Matthias and Monakhova, Yulia and Schulze, Margit}, title = {Benchtop versus high field NMR: Comparable performance found for the molecular weight determination of lignin}, series = {Journal of Pharmaceutical and Biomedical Analysis}, volume = {212}, journal = {Journal of Pharmaceutical and Biomedical Analysis}, number = {Article number: 114649}, publisher = {Elsevier}, address = {New York, NY}, isbn = {0731-7085}, doi = {10.1016/j.jpba.2022.114649}, year = {2022}, abstract = {Lignin is a promising renewable biopolymer being investigated worldwide as an environmentally benign substitute of fossil-based aromatic compounds, e.g. for the use as an excipient with antioxidant and antimicrobial properties in drug delivery or even as active compound. For its successful implementation into process streams, a quick, easy, and reliable method is needed for its molecular weight determination. Here we present a method using 1H spectra of benchtop as well as conventional NMR systems in combination with multivariate data analysis, to determine lignin's molecular weight (Mw and Mn) and polydispersity index (PDI). A set of 36 organosolv lignin samples (from Miscanthus x giganteus, Paulownia tomentosa and Silphium perfoliatum) was used for the calibration and cross validation, and 17 samples were used as external validation set. Validation errors between 5.6\% and 12.9\% were achieved for all parameters on all NMR devices (43, 60, 500 and 600 MHz). Surprisingly, no significant difference in the performance of the benchtop and high-field devices was found. This facilitates the application of this method for determining lignin's molecular weight in an industrial environment because of the low maintenance expenditure, small footprint, ruggedness, and low cost of permanent magnet benchtop NMR systems.}, language = {en} } @article{MonakhovaDiehl2022, author = {Monakhova, Yulia and Diehl, Bernd W.K.}, title = {Multinuclear NMR screening of pharmaceuticals using standardization by 2H integral of a deuterated solvent}, series = {Journal of Pharmaceutical and Biomedical Analysis}, volume = {209}, journal = {Journal of Pharmaceutical and Biomedical Analysis}, number = {Article number: 114530}, publisher = {Elsevier}, isbn = {0731-7085}, doi = {10.1016/j.jpba.2021.114530}, year = {2022}, abstract = {NMR standardization approach that uses the 2H integral of deuterated solvent for quantitative multinuclear analysis of pharmaceuticals is described. As a proof of principle, the existing NMR procedure for the analysis of heparin products according to US Pharmacopeia monograph is extended to the determination of Na+ and Cl- content in this matrix. Quantification is performed based on the ratio of a 23Na (35Cl) NMR integral and 2H NMR signal of deuterated solvent, D2O, acquired using the specific spectrometer hardware. As an alternative, the possibility of 133Cs standardization using the addition of Cs2CO3 stock solution is shown. Validation characteristics (linearity, repeatability, sensitivity) are evaluated. A holistic NMR profiling of heparin products can now also be used for the quantitative determination of inorganic compounds in a single analytical run using a single sample. In general, the new standardization methodology provides an appealing alternative for the NMR screening of inorganic and organic components in pharmaceutical products.}, language = {en} } @article{LindnerBurgerRutledgeetal.2022, author = {Lindner, Simon and Burger, Ren{\´e} and Rutledge, Douglas N. and Do, Xuan Tung and Rumpf, Jessica and Diehl, Bernd W. K. and Schulze, Margit and Monakhova, Yulia}, title = {Is the calibration transfer of multivariate calibration models between high- and low-field NMR instruments possible? A case study of lignin molecular weight}, series = {Analytical chemistry}, volume = {94}, journal = {Analytical chemistry}, number = {9}, publisher = {ACS Publications}, address = {Washington, DC}, isbn = {1520-6882}, doi = {10.1021/acs.analchem.1c05125}, pages = {3997 -- 4004}, year = {2022}, abstract = {Although several successful applications of benchtop nuclear magnetic resonance (NMR) spectroscopy in quantitative mixture analysis exist, the possibility of calibration transfer remains mostly unexplored, especially between high- and low-field NMR. This study investigates for the first time the calibration transfer of partial least squares regressions [weight average molecular weight (Mw) of lignin] between high-field (600 MHz) NMR and benchtop NMR devices (43 and 60 MHz). For the transfer, piecewise direct standardization, calibration transfer based on canonical correlation analysis, and transfer via the extreme learning machine auto-encoder method are employed. Despite the immense resolution difference between high-field and low-field NMR instruments, the results demonstrate that the calibration transfer from high- to low-field is feasible in the case of a physical property, namely, the molecular weight, achieving validation errors close to the original calibration (down to only 1.2 times higher root mean square errors). These results introduce new perspectives for applications of benchtop NMR, in which existing calibrations from expensive high-field instruments can be transferred to cheaper benchtop instruments to economize.}, language = {en} } @inproceedings{AmirBauckhageChircuetal.2022, author = {Amir, Malik and Bauckhage, Christian and Chircu, Alina and Czarnecki, Christian and Knopf, Christian and Piatkowski, Nico and Sultanow, Eldar}, title = {What can we expect from quantum (digital) twins?}, publisher = {AIS Electronic Library (AISeL)}, pages = {1 -- 14}, year = {2022}, abstract = {Digital twins enable the modeling and simulation of real-world entities (objects, processes or systems), resulting in improvements in the associated value chains. The emerging field of quantum computing holds tremendous promise for evolving this virtualization towards Quantum (Digital) Twins (QDT) and ultimately Quantum Twins (QT). The quantum (digital) twin concept is not a contradiction in terms - but instead describes a hybrid approach that can be implemented using the technologies available today by combining classical computing and digital twin concepts with quantum processing. This paper presents the status quo of research and practice on quantum (digital) twins. It also discuses their potential to create competitive advantage through real-time simulation of highly complex, interconnected entities that helps companies better address changes in their environment and differentiate their products and services.}, language = {en} } @inproceedings{BlaneckBornheimGriegeretal.2022, author = {Blaneck, Patrick Gustav and Bornheim, Tobias and Grieger, Niklas and Bialonski, Stephan}, title = {Automatic readability assessment of german sentences with transformer ensembles}, series = {Proceedings of the GermEval 2022 Workshop on Text Complexity Assessment of German Text}, booktitle = {Proceedings of the GermEval 2022 Workshop on Text Complexity Assessment of German Text}, publisher = {Association for Computational Linguistics}, address = {Potsdam}, doi = {10.48550/arXiv.2209.04299}, pages = {57 -- 62}, year = {2022}, abstract = {Reliable methods for automatic readability assessment have the potential to impact a variety of fields, ranging from machine translation to self-informed learning. Recently, large language models for the German language (such as GBERT and GPT-2-Wechsel) have become available, allowing to develop Deep Learning based approaches that promise to further improve automatic readability assessment. In this contribution, we studied the ability of ensembles of fine-tuned GBERT and GPT-2-Wechsel models to reliably predict the readability of German sentences. We combined these models with linguistic features and investigated the dependence of prediction performance on ensemble size and composition. Mixed ensembles of GBERT and GPT-2-Wechsel performed better than ensembles of the same size consisting of only GBERT or GPT-2-Wechsel models. Our models were evaluated in the GermEval 2022 Shared Task on Text Complexity Assessment on data of German sentences. On out-of-sample data, our best ensemble achieved a root mean squared error of 0:435.}, language = {en} } @article{Maurischat2022, author = {Maurischat, Andreas}, title = {Algebraic independence of the Carlitz period and its hyperderivatives}, series = {Journal of Number Theory}, volume = {240}, journal = {Journal of Number Theory}, publisher = {Elsevier}, address = {Orlando, Fla.}, issn = {0022-314X}, doi = {10.1016/j.jnt.2022.01.006}, pages = {145 -- 162}, year = {2022}, language = {en} } @article{KotliarOrtnerConradietal.2022, author = {Kotliar, Konstantin and Ortner, Marion and Conradi, Anna and Hacker, Patricia and Hauser, Christine and G{\"u}nthner, Roman and Moser, Michaela and Muggenthaler, Claudia and Diehl-Schmid, Janine and Priller, Josef and Schmaderer, Christoph and Grimmer, Timo}, title = {Altered retinal cerebral vessel oscillation frequencies in Alzheimer's disease compatible with impaired amyloid clearance}, series = {Neurobiology of Aging}, volume = {120}, journal = {Neurobiology of Aging}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0197-4580}, doi = {10.1016/j.neurobiolaging.2022.08.012}, pages = {117 -- 127}, year = {2022}, abstract = {Retinal vessels are similar to cerebral vessels in their structure and function. Moderately low oscillation frequencies of around 0.1 Hz have been reported as the driving force for paravascular drainage in gray matter in mice and are known as the frequencies of lymphatic vessels in humans. We aimed to elucidate whether retinal vessel oscillations are altered in Alzheimer's disease (AD) at the stage of dementia or mild cognitive impairment (MCI). Seventeen patients with mild-to-moderate dementia due to AD (ADD); 23 patients with MCI due to AD, and 18 cognitively healthy controls (HC) were examined using Dynamic Retinal Vessel Analyzer. Oscillatory temporal changes of retinal vessel diameters were evaluated using mathematical signal analysis. Especially at moderately low frequencies around 0.1 Hz, arterial oscillations in ADD and MCI significantly prevailed over HC oscillations and correlated with disease severity. The pronounced retinal arterial vasomotion at moderately low frequencies in the ADD and MCI groups would be compatible with the view of a compensatory upregulation of paravascular drainage in AD and strengthen the amyloid clearance hypothesis.}, language = {en} } @article{ColomboDriraFrotscheretal.2022, author = {Colombo, Daniele and Drira, Slah and Frotscher, Ralf and Staat, Manfred}, title = {An element-based formulation for ES-FEM and FS-FEM models for implementation in standard solid mechanics finite element codes for 2D and 3D static analysis}, series = {International Journal for Numerical Methods in Engineering}, volume = {124}, journal = {International Journal for Numerical Methods in Engineering}, number = {2}, publisher = {Wiley}, address = {Chichester}, issn = {1097-0207}, doi = {10.1002/nme.7126}, pages = {402 -- 433}, year = {2022}, abstract = {Edge-based and face-based smoothed finite element methods (ES-FEM and FS-FEM, respectively) are modified versions of the finite element method allowing to achieve more accurate results and to reduce sensitivity to mesh distortion, at least for linear elements. These properties make the two methods very attractive. However, their implementation in a standard finite element code is nontrivial because it requires heavy and extensive modifications to the code architecture. In this article, we present an element-based formulation of ES-FEM and FS-FEM methods allowing to implement the two methods in a standard finite element code with no modifications to its architecture. Moreover, the element-based formulation permits to easily manage any type of element, especially in 3D models where, to the best of the authors' knowledge, only tetrahedral elements are used in FS-FEM applications found in the literature. Shape functions for non-simplex 3D elements are proposed in order to apply FS-FEM to any standard finite element.}, language = {en} } @article{BhattaraiMayStaatetal.2022, author = {Bhattarai, Aroj and May, Charlotte Anabell and Staat, Manfred and Kowalczyk, Wojciech and Tran, Thanh Ngoc}, title = {Layer-specific damage modeling of porcine large intestine under biaxial tension}, series = {Bioengineering}, volume = {9}, journal = {Bioengineering}, number = {10, Early Access}, publisher = {MDPI}, address = {Basel}, issn = {2306-5354}, doi = {10.3390/bioengineering9100528}, pages = {1 -- 17}, year = {2022}, abstract = {The mechanical behavior of the large intestine beyond the ultimate stress has never been investigated. Stretching beyond the ultimate stress may drastically impair the tissue microstructure, which consequently weakens its healthy state functions of absorption, temporary storage, and transportation for defecation. Due to closely similar microstructure and function with humans, biaxial tensile experiments on the porcine large intestine have been performed in this study. In this paper, we report hyperelastic characterization of the large intestine based on experiments in 102 specimens. We also report the theoretical analysis of the experimental results, including an exponential damage evolution function. The fracture energies and the threshold stresses are set as damage material parameters for the longitudinal muscular, the circumferential muscular and the submucosal collagenous layers. A biaxial tensile simulation of a linear brick element has been performed to validate the applicability of the estimated material parameters. The model successfully simulates the biomechanical response of the large intestine under physiological and non-physiological loads.}, language = {en} } @misc{Bergerhausen2022, type = {Master Thesis}, author = {Bergerhausen, Florian}, title = {Die Chance der fiktionalen Literatur : Literatur der Fiktion als Anstoß f{\"u}r Information und Diskurs}, publisher = {FH Aachen}, address = {Aachen}, year = {2022}, abstract = {Der informative Charakter fiktionaler Texte sollte nicht untersch{\"a}tzt werden. Mit dem Projekt wird durch „Buddenbrooks" von Thomas Mann gezeigt, wie relevante und redebed{\"u}rftige Themen in der Literatur angesprochen werden. Daf{\"u}r gibt es zus{\"a}tzliche Text- und Info-Impulse als erg{\"a}nzendes Buch zum Roman. Neben diesen Vertiefungsb{\"u}chern gibt es eine Inszenierung des Buches mit Beispielen aus den B{\"u}chern. Die Ausstellung kann Teil eines Messestandes sein oder f{\"u}r sich existieren und bietet einen ersten Kontakt mit der Idee des Projektes und mit den B{\"u}chern selbst. Zus{\"a}tzliches Interesse an der Arbeit wird durch Social Media Posts generiert, die den wichtigen Part des Austauschs und der Diskussion f{\"o}rdern, wozu das Projekt auch anregen m{\"o}chte. „Die Chance der fiktionalen Literatur" regt Leser:innen an, fiktionale Literatur anders zu betrachten und einen gr{\"o}ßeren Nutzen aus der Fiktion zu ziehen.}, language = {de} } @misc{Buechel2022, type = {Master Thesis}, author = {B{\"u}chel, Carolin}, title = {GYMLET : dein mobiles Freiluftstudio - Entwicklung eines serientauglichen Prototypen und einer Vermarktungsstrategie}, publisher = {FH Aachen}, address = {Aachen}, pages = {93 Seiten}, year = {2022}, abstract = {Sportvereine verlieren zunehmend Mitglieder. Grund daf{\"u}r ist der wachsende Wunsch nach unabh{\"a}ngigen Trainingsm{\"o}glichkeiten. GYMLET bietet den Sportler:innen die M{\"o}glichkeit, ihre Fitness funktional, selbstorganisiert und unabh{\"a}ngig zu trainieren. Dabei kann durch den selbstbestimmten Trainingsort neben der k{\"o}rperlichen Fitness vor allem die Motivation zur sportlichen Aktivit{\"a}t und das Wohlbefinden gesteigert werden. Unterst{\"u}tzt wird das Trainingssystem durch eine App, welche den Sportler:innen neben Nutzungsm{\"o}glichkeiten als Coach und Trainingsplaner dient. Um diese Trainingsm{\"o}glichkeit an die Zielgruppe heranzutragen, ist eine Kampagnenstrategie aus zwei Phasen entstanden. In dieser sollen Postings und Clips {\"u}ber Instagram und Youtube ver{\"o}ffentlicht werden. Zus{\"a}tzlich werden Zeitschriften und m{\"o}gliche Kooperationen mit Therapeuten oder Freizeitunterk{\"u}nften zur Ver{\"o}ffentlichung der Kampagne genutzt.}, language = {de} } @masterthesis{Geilhausen2022, type = {Bachelor Thesis}, author = {Geilhausen, Ayleen}, title = {SUE : Restauranterlebnisse neu gestalten}, publisher = {FH Aachen}, address = {Aachen}, pages = {121 Seiten}, year = {2022}, abstract = {Gastronomiebetriebe, insbesondere diese ohne zeitgem{\"a}ße und durchdachte Konzepte wurden durch die Pandemie stark getroffen. W{\"a}hrend große Fast-Food-Ketten bereits vor der Pandemie digitale L{\"o}sungen einsetzten, stehen nun auch andere Restaurantbetreiber:innen vor der Herausforderung der Digitalisierung. Gerade die Pandemie hat an dieser Stelle verdeutlicht, welche Restaurants ihre Prozesse im Sinne der User Experience durchdacht haben und welche nicht. Die Tisch-Stuhl-Kombination der „SUE"-Serie bietet Restaurants, smarte und elegante Gastronomiem{\"o}bel, die je nach Konzept in Materialit{\"a}t und Farbe frei anpassbar sind. Wandelbarkeit, Komfort und die Integration digitaler L{\"o}sungen sind die Kernkompetenzen und Anforderungen, die das Gastronomie-Interior in Zukunft erf{\"u}llen muss. Der smarte Bistrotisch und der wandelbare Stuhl der „SUE"-Serie zeigt einen digitalisierten und anpassbaren L{\"o}sungsansatz.}, language = {de} } @incollection{StriebingMuellerSchraudneretal.2022, author = {Striebing, Clemens and M{\"u}ller, J{\"o}rg and Schraudner, Martina and Gewinner, Irina Valerie and Guerrero Morales, Patricia and Hochfeld, Katharina and Hoffman, Shekinah and Kmec, Julie A. and Nguyen, Huu Minh and Schneider, Jannick and Sheridan, Jennifer and Steuer-Dankert, Linda and Trimble O'Connor, Lindsey and Vandevelde-Rougale, Agn{\`e}s}, title = {Promoting diversity and combatting discrimination in research organizations: a practitioner's guide}, series = {Diversity and discrimination in research organizations}, booktitle = {Diversity and discrimination in research organizations}, publisher = {Emerald Publishing Limited}, address = {Bingley}, isbn = {978-1-80117-959-1 (Print)}, doi = {10.1108/978-1-80117-956-020221012}, pages = {421 -- 442}, year = {2022}, abstract = {The essay is addressed to practitioners in research management and from academic leadership. It describes which measures can contribute to creating an inclusive climate for research teams and preventing and effectively dealing with discrimination. The practical recommendations consider the policy and organizational levels, as well as the individual perspective of research managers. Following a series of basic recommendations, six lessons learned are formulated, derived from the contributions to the edited collection on "Diversity and Discrimination in Research Organizations."}, language = {en} } @incollection{SteuerDankertLeichtScholten2022, author = {Steuer-Dankert, Linda and Leicht-Scholten, Carmen}, title = {Perceiving diversity : an explorative approach in a complex research organization.}, series = {Diversity and discrimination in research organizations}, booktitle = {Diversity and discrimination in research organizations}, publisher = {Emerald Publishing Limited}, address = {Bingley}, isbn = {978-1-80117-959-1 (Print)}, doi = {10.1108/978-1-80117-956-020221010}, pages = {365 -- 392}, year = {2022}, abstract = {Diversity management is seen as a decisive factor for ensuring the development of socially responsible innovations (Beacham and Shambaugh, 2011; Sonntag, 2014; L{\´o}pez, 2015; Uebernickel et al., 2015). However, many diversity management approaches fail due to a one-sided consideration of diversity (Thomas and Ely, 2019) and a lacking linkage between the prevailing organizational culture and the perception of diversity in the respective organization. Reflecting the importance of diverse perspectives, research institutions have a special responsibility to actively deal with diversity, as they are publicly funded institutions that drive socially relevant development and educate future generations of developers, leaders and decision-makers. Nevertheless, only a few studies have so far dealt with the influence of the special framework conditions of the science system on diversity management. Focusing on the interdependency of the organizational culture and diversity management especially in a university research environment, this chapter aims in a first step to provide a theoretical perspective on the framework conditions of a complex research organization in Germany in order to understand the system-specific factors influencing diversity management. In a second step, an exploratory cluster analysis is presented, investigating the perception of diversity and possible influencing factors moderating this perception in a scientific organization. Combining both steps, the results show specific mechanisms and structures of the university research environment that have an impact on diversity management and rigidify structural barriers preventing an increase of diversity. The quantitative study also points out that the management level takes on a special role model function in the scientific system and thus has an influence on the perception of diversity. Consequently, when developing diversity management approaches in research organizations, it is necessary to consider the top-down direction of action, the special nature of organizational structures in the university research environment as well as the special role of the professorial level as role model for the scientific staff.}, language = {en} } @incollection{HinkeVervierBrauneretal.2022, author = {Hinke, Christian and Vervier, Luisa and Brauner, Philipp and Schneider, Sebastian and Steuer-Dankert, Linda and Ziefle, Martina and Leicht-Scholten, Carmen}, title = {Capability configuration in next generation manufacturing}, series = {Forecasting next generation manufacturing : digital shadows, human-machine collaboration, and data-driven business models}, booktitle = {Forecasting next generation manufacturing : digital shadows, human-machine collaboration, and data-driven business models}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-07733-3}, doi = {10.1007/978-3-031-07734-0_6}, pages = {95 -- 106}, year = {2022}, abstract = {Industrial production systems are facing radical change in multiple dimensions. This change is caused by technological developments and the digital transformation of production, as well as the call for political and social change to facilitate a transformation toward sustainability. These changes affect both the capabilities of production systems and companies and the design of higher education and educational programs. Given the high uncertainty in the likelihood of occurrence and the technical, economic, and societal impacts of these concepts, we conducted a technology foresight study, in the form of a real-time Delphi analysis, to derive reliable future scenarios featuring the next generation of manufacturing systems. This chapter presents the capabilities dimension and describes each projection in detail, offering current case study examples and discussing related research, as well as implications for policy makers and firms. Specifically, we discuss the benefits of capturing expert knowledge and making it accessible to newcomers, especially in highly specialized industries. The experts argue that in order to cope with the challenges and circumstances of today's world, students must already during their education at university learn how to work with AI and other technologies. This means that study programs must change and that universities must adapt their structural aspects to meet the needs of the students.}, language = {en} } @article{PhilippEfthimiouPaganoetal.2022, author = {Philipp, Mohr and Efthimiou, Nikos and Pagano, Fiammetta and Kratochwil, Nicolaus and Pizzichemi, Marco and Tsoumpas, Charalampos and Auffray, Etiennette and Ziemons, Karl}, title = {Image reconstruction analysis for positron emission tomography with heterostructured scintillators}, series = {IEEE Transactions on Radiation and Plasma Medical Sciences}, volume = {7}, journal = {IEEE Transactions on Radiation and Plasma Medical Sciences}, number = {1}, publisher = {IEEE}, address = {New York, NY}, issn = {2469-7311}, doi = {10.1109/TRPMS.2022.3208615}, pages = {41 -- 51}, year = {2022}, abstract = {The concept of structure engineering has been proposed for exploring the next generation of radiation detectors with improved performance. A TOF-PET geometry with heterostructured scintillators with a pixel size of 3.0×3.1×15 mm3 was simulated using Monte Carlo. The heterostructures consisted of alternating layers of BGO as a dense material with high stopping power and plastic (EJ232) as a fast light emitter. The detector time resolution was calculated as a function of the deposited and shared energy in both materials on an event-by-event basis. While sensitivity was reduced to 32\% for 100 μm thick plastic layers and 52\% for 50 μm, the CTR distribution improved to 204±49 ps and 220±41 ps respectively, compared to 276 ps that we considered for bulk BGO. The complex distribution of timing resolutions was accounted for in the reconstruction. We divided the events into three groups based on their CTR and modeled them with different Gaussian TOF kernels. On a NEMA IQ phantom, the heterostructures had better contrast recovery in early iterations. On the other hand, BGO achieved a better contrast to noise ratio (CNR) after the 15th iteration due to the higher sensitivity. The developed simulation and reconstruction methods constitute new tools for evaluating different detector designs with complex time responses.}, language = {en} } @inproceedings{AllalBannisterBuismanetal.2022, author = {Allal, D. and Bannister, R. and Buisman, K. and Capriglione, D. and Di Capua, G. and Garc{\´i}a-Patr{\´o}n, M. and Gatzweiler, Thomas and Gellersen, F. and Harzheim, Thomas and Heuermann, Holger and Hoffmann, J. and Izbrodin, A. and Kuhlmann, K. and Lahbacha, K. and Maffucci, A. and Miele, G. and Mubarak, F. and Salter, M. and Pham, T.D. and Sayegh, A. and Singh, D. and Stein, F. and Zeier, M.}, title = {RF measurements for future communication applications: an overview}, series = {2022 IEEE International Symposium on Measurements \& Networking (M\&N)}, booktitle = {2022 IEEE International Symposium on Measurements \& Networking (M\&N)}, publisher = {IEEE}, isbn = {978-1-6654-8362-9}, issn = {2639-5061}, doi = {10.1109/MN55117.2022.9887740}, pages = {1 -- 6}, year = {2022}, abstract = {In this paper research activities developed within the FutureCom project are presented. The project, funded by the European Metrology Programme for Innovation and Research (EMPIR), aims at evaluating and characterizing: (i) active devices, (ii) signal- and power integrity of field programmable gate array (FPGA) circuits, (iii) operational performance of electronic circuits in real-world and harsh environments (e.g. below and above ambient temperatures and at different levels of humidity), (iv) passive inter-modulation (PIM) in communication systems considering different values of temperature and humidity corresponding to the typical operating conditions that we can experience in real-world scenarios. An overview of the FutureCom project is provided here, then the research activities are described.}, language = {en} } @article{EngelmannPourshahidiShalabyetal.2022, author = {Engelmann, Ulrich M. and Pourshahidi, Mohammad Ali and Shalaby, Ahmed and Krause, Hans-Joachim}, title = {Probing particle size dependency of frequency mixing magnetic detection with dynamic relaxation simulation}, series = {Journal of Magnetism and Magnetic Materials}, volume = {563}, journal = {Journal of Magnetism and Magnetic Materials}, number = {In progress, Art. No. 169965}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0304-8853}, doi = {10.1016/j.jmmm.2022.169965}, year = {2022}, abstract = {Biomedical applications of magnetic nanoparticles (MNP) fundamentally rely on the particles' magnetic relaxation as a response to an alternating magnetic field. The magnetic relaxation complexly depends on the interplay of MNP magnetic and physical properties with the applied field parameters. It is commonly accepted that particle core size is a major contributor to signal generation in all the above applications, however, most MNP samples comprise broad distribution spanning nm and more. Therefore, precise knowledge of the exact contribution of individual core sizes to signal generation is desired for optimal MNP design generally for each application. Specifically, we present a magnetic relaxation simulation-driven analysis of experimental frequency mixing magnetic detection (FMMD) for biosensing to quantify the contributions of individual core size fractions towards signal generation. Applying our method to two different experimental MNP systems, we found the most dominant contributions from approx. 20 nm sized particles in the two independent MNP systems. Additional comparison between freely suspended and immobilized MNP also reveals insight in the MNP microstructure, allowing to use FMMD for MNP characterization, as well as to further fine-tune its applicability in biosensing.}, language = {en} } @article{PourshahidiEngelmannOffenhaeusseretal.2022, author = {Pourshahidi, Ali Mohammad and Engelmann, Ulrich M. and Offenh{\"a}usser, Andreas and Krause, Hans-Joachim}, title = {Resolving ambiguities in core size determination of magnetic nanoparticles from magnetic frequency mixing data}, series = {Journal of Magnetism and Magnetic Materials}, volume = {563}, journal = {Journal of Magnetism and Magnetic Materials}, number = {In progress, Art. No. 169969}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0304-8853}, doi = {10.1016/j.jmmm.2022.169969}, year = {2022}, abstract = {Frequency mixing magnetic detection (FMMD) has been widely utilized as a measurement technique in magnetic immunoassays. It can also be used for the characterization and distinction (also known as "colourization") of different types of magnetic nanoparticles (MNPs) based on their core sizes. In a previous work, it was shown that the large particles contribute most of the FMMD signal. This leads to ambiguities in core size determination from fitting since the contribution of the small-sized particles is almost undetectable among the strong responses from the large ones. In this work, we report on how this ambiguity can be overcome by modelling the signal intensity using the Langevin model in thermodynamic equilibrium including a lognormal core size distribution fL(dc,d0,σ) fitted to experimentally measured FMMD data of immobilized MNPs. For each given median diameter d0, an ambiguous amount of best-fitting pairs of parameters distribution width σ and number of particles Np with R2 > 0.99 are extracted. By determining the samples' total iron mass, mFe, with inductively coupled plasma optical emission spectrometry (ICP-OES), we are then able to identify the one specific best-fitting pair (σ, Np) one uniquely. With this additional externally measured parameter, we resolved the ambiguity in core size distribution and determined the parameters (d0, σ, Np) directly from FMMD measurements, allowing precise MNPs sample characterization.}, language = {en} } @incollection{BraunerVervierBrillowskietal.2022, author = {Brauner, Philipp and Vervier, Luisa and Brillowski, Florian and Dammers, Hannah and Steuer-Dankert, Linda and Schneider, Sebastian and Baier, Ralph and Ziefle, Martina and Gries, Thomas and Leicht-Scholten, Carmen and Mertens, Alexander and Nagel, Saskia K.}, title = {Organization Routines in Next Generation Manufacturing}, series = {Forecasting Next Generation Manufacturing}, booktitle = {Forecasting Next Generation Manufacturing}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-07734-0}, doi = {10.1007/978-3-031-07734-0_5}, pages = {75 -- 94}, year = {2022}, abstract = {Next Generation Manufacturing promises significant improvements in performance, productivity, and value creation. In addition to the desired and projected improvements regarding the planning, production, and usage cycles of products, this digital transformation will have a huge impact on work, workers, and workplace design. Given the high uncertainty in the likelihood of occurrence and the technical, economic, and societal impacts of these changes, we conducted a technology foresight study, in the form of a real-time Delphi analysis, to derive reliable future scenarios featuring the next generation of manufacturing systems. This chapter presents the organization dimension and describes each projection in detail, offering current case study examples and discussing related research, as well as implications for policy makers and firms. Specifically, we highlight seven areas in which the digital transformation of production will change how we work, how we organize the work within a company, how we evaluate these changes, and how employment and labor rights will be affected across company boundaries. The experts are unsure whether the use of collaborative robots in factories will replace traditional robots by 2030. They believe that the use of hybrid intelligence will supplement human decision-making processes in production environments. Furthermore, they predict that artificial intelligence will lead to changes in management processes, leadership, and the elimination of hierarchies. However, to ensure that social and normative aspects are incorporated into the AI algorithms, restricting measurement of individual performance will be necessary. Additionally, AI-based decision support can significantly contribute toward new, socially accepted modes of leadership. Finally, the experts believe that there will be a reduction in the workforce by the year 2030.}, language = {en} } @inproceedings{MertensBraunerBaieretal.2022, author = {Mertens, Alexander and Brauner, Philipp and Baier, Ralph and Brillowski, Florian and Dammers, Hannah and van Dyck, Marc and Kong, Iris and K{\"o}nigs, Peter and Kordtomeikel, Frauke and Liehner, Gian Luca and P{\"u}tz, Sebastian and Rodermann, Niklas and Schaar, Anne Kathrin and Steuer-Dankert, Linda and Vervier, Luisa and Wlecke, Shari and Gries, Thomas and Leicht-Scholten, Carmen and Nagel, Saskia K. and Piller, Frank T. and Schuh, G{\"u}nther and Ziefle, Martina and Nitsch, Verena}, title = {Modelling Human Factors in Cyber Physical Production Systems by the Integration of Human Digital Shadows}, series = {Modellierung 2022 Satellite Events}, booktitle = {Modellierung 2022 Satellite Events}, editor = {Michael, Judith and Pfeiffer, J{\´e}r{\^o}me and Wortmann, Andreas}, publisher = {GI Gesellschaft f{\"u}r Informatik}, address = {Bonn}, doi = {10.18420/modellierung2022ws-018}, pages = {147 -- 149}, year = {2022}, abstract = {The future of industrial manufacturing and production will increasingly manifest in the form of cyber-physical production systems. Here, Digital Shadows will act as mediators between the physical and digital world to model and operationalize the interactions and relationships between different entities in production systems. Until now, the associated concepts have been primarily pursued and implemented from a technocentric perspective, in which human actors play a subordinate role, if they are considered at all. This paper outlines an anthropocentric approach that explicitly considers the characteristics, behavior, and traits and states of human actors in socio-technical production systems. For this purpose, we discuss the potentials and the expected challenges and threats of creating and using Human Digital Shadows in production.}, language = {en} } @incollection{BauschatBennerKlingeetal.2022, author = {Bauschat, J.-Michael and Benner, Miriam and Klinge, Henner and Ziegler, Simon}, title = {Urbane Mobilit{\"a}t entdeckt die 3. Dimension}, series = {Transforming Mobility - What Next?}, booktitle = {Transforming Mobility - What Next?}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-36429-8}, doi = {10.1007/978-3-658-36430-4_53}, pages = {895 -- 916}, year = {2022}, abstract = {Der Themenkomplex urbane Mobilit{\"a}t ist getrieben durch den Verkehrsinfarkt in Ballungszentren, durch Luftverschmutzung und L{\"a}rm, sowie den Trend zum Leben in der Stadt in den st{\"a}dteplanerischen Fokus ger{\"u}ckt. Emissionsneutrale Antriebskonzepte in der Luftfahrt f{\"u}hren zu Ans{\"a}tzen Flugger{\"a}te einzusetzen, die batteriegetrieben vertikal aufsteigen und landen k{\"o}nnen. Flugphysikalisch und energetisch ist diese Technik nur dann sinnvoll, wenn es zwingende Gr{\"u}nde gibt (z.B. Rettungseins{\"a}tze), daher wird der flugphysikalische Hintergrund prinzipiell erl{\"a}utert. Es werden einige aktuelle Lufttransportkonzepte f{\"u}r eine urbane Personenbef{\"o}rderung vorgestellt. Sollte es verst{\"a}rkt zu Lufttransport {\"u}ber St{\"a}dten kommen, m{\"u}ssen betroffene Luftr{\"a}ume geordnet und {\"u}berwacht werden. Wie kompatibel Lufttransportsysteme mit den heute bereits relevanten urbanen Bef{\"o}rderungsmitteln sein m{\"u}ssen, wird kritisch diskutiert. Abschließend werden die Aspekte Akzeptanz durch die Kunden und Wirtschaftlichkeit ebenso angerissen, wie die hochproblematische Rohstoffgewinnung, die Entsorgung und das Recycling von Batterien.}, language = {de} } @incollection{HebelHerrmannRitzetal.2022, author = {Hebel, Christoph and Herrmann, Ulf and Ritz, Thomas and R{\"o}th, Thilo and Anthrakidis, Anette and B{\"o}ker, J{\"o}rg and Franzke, Till and Grodzki, Thomas and Merkens, Torsten and Sch{\"o}ttler, Mirjam}, title = {FlexSHARE - Methodisches Framework zur innovativen Gestaltung der urbanen Mobilit{\"a}t durch Sharing- Angebote}, series = {Transforming Mobility - What Next?}, booktitle = {Transforming Mobility - What Next?}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-36429-8}, doi = {10.1007/978-3-658-36430-4_10}, pages = {153 -- 169}, year = {2022}, abstract = {Das Ziel des INTERREG-Projektes „SHAREuregio" (FKZ: 34.EFRE-0300134) ist es, grenz{\"u}berschreitende Mobilit{\"a}t in der Euregio Rhein-Maas-Nord zu erm{\"o}glichen und zu f{\"o}rdern. Dazu soll ein elektromobiles Car- und Bikesharing- System entwickelt und in der Stadt M{\"o}nchengladbach, im Kreis Viersen sowie in den Gemeinden Roermond und Venlo (beide NL) zusammen mit den Partnern Wirtschaftsf{\"o}rderung M{\"o}nchengladbach, Wirtschaftsf{\"o}rderung f{\"u}r den Kreis Viersen, NEW AG, Goodmoovs (NL), Greenflux (NL) und der FH Aachen implementiert werden. Zun{\"a}chst richtet sich das Angebot, bestehend aus 40 Elektroautos und 40 Elektrofahrr{\"a}dern, an Unternehmen und wird nach einer Erprobungsphase, mit einer gr{\"o}ßeren Anzahl an Fahrzeugen, auch f{\"u}r Privatpersonen verf{\"u}gbar gemacht werden. Die Fahrzeuge stehen bei den jeweiligen Anwendungspartnern in Deutschland und den Niederlanden. Im Rahmen dieses Projektes hat die FH Aachen „FlexSHARE" entwickelt - ein methodisches Framework zur innovativen Gestaltung urbaner Sharing- Angebote. Das Framework erm{\"o}glicht es, anhand von messbaren Kenngr{\"o}ßen, bedarfsgerechte und auf die Region abgestimmte Sharing-Systeme zu entwickeln.}, language = {de} } @inproceedings{ZaehlBiewendtWolfetal.2022, author = {Z{\"a}hl, Philipp M. and Biewendt, Marcel and Wolf, Martin and Eggert, Mathias}, title = {Requirements for Competence Developing Games in the Environment of SE Competence Development}, series = {Angewandte Forschung in der Wirtschaftsinformatik 2022}, booktitle = {Angewandte Forschung in der Wirtschaftsinformatik 2022}, publisher = {GITO}, address = {Berlin}, isbn = {978-3-95545-409-8}, doi = {10.30844/AKWI_2022_05}, pages = {73 -- 88}, year = {2022}, abstract = {Many of today's factors make software development more and more complex, such as time pressure, new technologies, IT security risks, et cetera. Thus, a good preparation of current as well as future software developers in terms of a good software engineering education becomes progressively important. As current research shows, Competence Developing Games (CDGs) and Serious Games can offer a potential solution. This paper identifies the necessary requirements for CDGs to be conducive in principle, but especially in software engineering (SE) education. For this purpose, the current state of research was summarized in the context of a literature review. Afterwards, some of the identified requirements as well as some additional requirements were evaluated by a survey in terms of subjective relevance.}, language = {en} } @article{MonakhovaDiehl2022, author = {Monakhova, Yulia and Diehl, Bernd W.K.}, title = {Nuclear magnetic resonance spectroscopy as an elegant tool for a complete quality control of crude heparin material}, series = {Journal of Pharmaceutical and Biomedical Analysis}, volume = {219}, journal = {Journal of Pharmaceutical and Biomedical Analysis}, number = {Article number: 114915}, publisher = {Elsevier}, address = {New York, NY}, issn = {0731-7085}, doi = {10.1016/j.jpba.2022.114915}, year = {2022}, abstract = {Nuclear magnetic resonance (NMR) spectrometric methods for the quantitative analysis of pure heparin in crude heparin is proposed. For quantification, a two-step routine was developed using a USP heparin reference sample for calibration and benzoic acid as an internal standard. The method was successfully validated for its accuracy, reproducibility, and precision. The methodology was used to analyze 20 authentic porcine heparinoid samples having heparin content between 4.25 w/w \% and 64.4 w/w \%. The characterization of crude heparin products was further extended to a simultaneous analysis of these common ions: sodium, calcium, acetate and chloride. A significant, linear dependence was found between anticoagulant activity and assayed heparin content for thirteen heparinoids samples, for which reference data were available. A Diffused-ordered NMR experiment (DOSY) can be used for qualitative analysis of specific glycosaminoglycans (GAGs) in heparinoid matrices and, potentially, for quantitative prediction of molecular weight of GAGs. NMR spectrometry therefore represents a unique analytical method suitable for the simultaneous quantitative control of organic and inorganic composition of crude heparin samples (especially heparin content) as well as an estimation of other physical and quality parameters (molecular weight, animal origin and activity).}, language = {en} } @inproceedings{WeissHeslenfeldSaeweetal.2022, author = {Weiss, Christian and Heslenfeld, Jonas and Saewe, Jasmin Kathrin and Bremen, Sebastian and H{\"a}fner, Constantin Leon}, title = {Investigation on the influence of powder humidity in Laser Powder Bed Fusion (LPBF)}, series = {Procedia CIRP}, volume = {111}, booktitle = {Procedia CIRP}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2022.08.102}, pages = {115 -- 120}, year = {2022}, abstract = {In the Laser Powder Bed Fusion (LPBF) process, parts are built out of metal powder material by exposure of a laser beam. During handling operations of the powder material, several influencing factors can affect the properties of the powder material and therefore directly influence the processability during manufacturing. Contamination by moisture due to handling operations is one of the most critical aspects of powder quality. In order to investigate the influences of powder humidity on LPBF processing, four materials (AlSi10Mg, Ti6Al4V, 316L and IN718) are chosen for this study. The powder material is artificially humidified, subsequently characterized, manufactured into cubic samples in a miniaturized process chamber and analyzed for their relative density. The results indicate that the processability and reproducibility of parts made of AlSi10Mg and Ti6Al4V are susceptible to humidity, while IN718 and 316L are barely influenced.}, language = {en} } @inproceedings{EggertDyong2022, author = {Eggert, Mathias and Dyong, Julian}, title = {Applying process mining in small and medium sized IT enterprises - challenges and guidelines}, series = {International Conference on Business Process Management (BPM 2022)}, booktitle = {International Conference on Business Process Management (BPM 2022)}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-16103-2}, doi = {10.1007/978-3-031-16103-2_11}, pages = {125 -- 142}, year = {2022}, abstract = {Process mining gets more and more attention even outside large enterprises and can be a major benefit for small and medium sized enterprises (SMEs) to gain competitive advantages. Applying process mining is challenging, particularly for SMEs because they have less resources and process maturity. So far, IS researchers analyzed process mining challenges with a focus on larger companies. This paper investigates the application of process mining by means of a case study and sheds light into the particular challenges of an IT SME. The results reveal 13 SME process mining challenges and seven guidelines to address them. In this way, the paper contributes to the understanding of process mining application in SME and shows similarities and differences to larger companies.}, language = {en} } @masterthesis{Crott2022, type = {Bachelor Thesis}, author = {Crott, Anne}, title = {Textil- und Industriemuseum (TIM) Augsburg : Entwicklung eines neuen Erscheinungsbildes}, publisher = {FH Aachen}, address = {Aachen}, pages = {131 Seiten}, year = {2022}, abstract = {Die Stadt Augsburg war eine der gr{\"o}ßten Textilst{\"a}dte Europas. Seit 2010 pr{\"a}sentiert das Textil- und Industriemuseum (TIM) eine Vielzahl von Exponaten in der alten Kammgarnspinnerei im ehemaligen Augsburger Textilviertel und ist somit ein wichtiger Bestandteil der bayrischen Museumslandschaft und deutschen Textilgeschichte. Neben seiner besonderen Lage {\"u}berzeugt das TIM vor allem mit einer großen Musterbuchsammlung. Im Fokus des in dieser Arbeit neugestalteten Erscheinungsbildes stehen die verschiedenen Muster, die den textilen Schwerpunkt in den Vordergrund r{\"u}cken und dem Museum damit einen einpr{\"a}gsamen Wiedererkennungswert geben. Mithilfe des neuen Corporate Designs soll das Museum f{\"u}r regionale und {\"u}berregionale Besucher:innen attraktiver gemacht und somit die einmalige geschichtliche Bedeutung vermittelt und erhalten werden.}, language = {de} } @masterthesis{Cekic2022, type = {Bachelor Thesis}, author = {Cekic, Dilara}, title = {Visionsbild eines BMW AG internen Tools : Optimierung einer datenzentrierten Plattform der BMW AG}, publisher = {FH Aachen}, address = {Aachen}, year = {2022}, abstract = {Die BMW AG verfolgt mehrere Ans{\"a}tze eine optimierte Effizienzsteigerung durch eigens entwickelte Softwaretools zu erreichen. Der Fokus hierbei liegt in der Erm{\"o}glichung einer datenzentrierten, nutzerorientierten und hochautomatisierten Fahrzeugentwicklung. Das eigen von der BMW AG entwickelte Software-Tool „Parts List" dient als digitale Bauteilliste f{\"u}r Entwicklungsteams. Das Tool b{\"u}ndelt mehrere Datenbanken und stellt diese in Echtzeit zur Verf{\"u}gung. Somit kann der manuelle Pflegeaufwand erheblich reduziert und eine Durchg{\"a}ngigkeit einer Vielzahl von Daten erm{\"o}glicht werden. Der Fokus der Abschlussarbeit liegt in der konzeptionellen und gestalterischen Optimierung des Tools. Dabei wird insbesondere der User Centered Design Prozess betrachtet, bei dem die Nutzer bzw. die Entwicklungsteams im Zentrum stehen.}, language = {de} } @masterthesis{Buhr2022, type = {Bachelor Thesis}, author = {Buhr, Amelie}, title = {Entschleunigen : warum unser Modekonsum verlangsamt werden muss}, publisher = {FH Aachen}, address = {Aachen}, pages = {141 Seiten}, year = {2022}, abstract = {In Zeiten von Schnelllebigkeit {\"a}ndern immer mehr Menschen bewusst ihren Umgang mit allt{\"a}glichen Dingen. Was dabei h{\"a}ufig in den Hintergrund r{\"u}ckt, ist das Thema "bewusste Kleidung". Beeinflusst durch sogenannte Fast-Fashion-Modeketten und Social Media leben wir in einer regelrechten Wegwerfgesellschaft. „Entschleunigen" besch{\"a}ftigt sich mit den Schattenseiten der Modeindustrie, zeigt aber ebenso (neue) Wege auf, die auf eine bessere Zukunft f{\"u}r uns und unsere Umwelt hoffen lassen. Aufgeteilt in zwei Kapitel gibt „Entschleunigen" einen Einblick in den {\"o}kologischen und sozialen Fußabdruck der Modeindustrie und stellt zum anderen die Gegenseite vor, bei der Wert auf faire Produktion und Nachhaltigkeit gelegt wird. Das Buch „Entschleunigen" soll {\"u}ber die Missst{\"a}nde in der Textilbranche informieren, jedoch im Umkehrschluss dazu motivieren, diese mit einfachen Mitteln zu verbessern.}, language = {de} } @book{KurzSchwer2022, author = {Kurz, Melanie and Schwer, Thilo}, title = {Geschichte des Designs}, edition = {1. Auflage}, publisher = {Beck}, address = {M{\"u}nchen}, isbn = {978-3-406-78813-0}, pages = {128 Seiten}, year = {2022}, abstract = {Dieser Band bietet einen kompakten {\"U}berblick {\"u}ber die wichtigsten Stationen des Produktdesigns vom Beginn der Industrialisierung bis heute. Im Zentrum stehen ikonische Alltagsgegenst{\"a}nde vom Thonet-Stuhl bis zum iPhone. Anschaulich und kenntnisreich nehmen Melanie Kurz und Thilo Schwer dabei auch die gesellschaftspolitische Situation, in der die Objekte entstanden sind, in den Blick.}, language = {de} } @article{UysalCreutzFiratetal.2022, author = {Uysal, Karya and Creutz, Till and Firat, Ipek Seda and Artmann, Gerhard and Teusch, Nicole and Temiz Artmann, Ayseg{\"u}l}, title = {Bio-functionalized ultra-thin, large-area and waterproof silicone membranes for biomechanical cellular loading and compliance experiments}, series = {Polymers}, volume = {14}, journal = {Polymers}, number = {11}, publisher = {MDPI}, address = {Basel}, issn = {2073-4360}, pages = {2213}, year = {2022}, abstract = {Biocompatibility, flexibility and durability make polydimethylsiloxane (PDMS) membranes top candidates in biomedical applications. CellDrum technology uses large area, <10 µm thin membranes as mechanical stress sensors of thin cell layers. For this to be successful, the properties (thickness, temperature, dust, wrinkles, etc.) must be precisely controlled. The following parameters of membrane fabrication by means of the Floating-on-Water (FoW) method were investigated: (1) PDMS volume, (2) ambient temperature, (3) membrane deflection and (4) membrane mechanical compliance. Significant differences were found between all PDMS volumes and thicknesses tested (p < 0.01). They also differed from the calculated values. At room temperatures between 22 and 26 °C, significant differences in average thickness values were found, as well as a continuous decrease in thicknesses within a 4 °C temperature elevation. No correlation was found between the membrane thickness groups (between 3-4 µm) in terms of deflection and compliance. We successfully present a fabrication method for thin bio-functionalized membranes in conjunction with a four-step quality management system. The results highlight the importance of tight regulation of production parameters through quality control. The use of membranes described here could also become the basis for material testing on thin, viscous layers such as polymers, dyes and adhesives, which goes far beyond biological applications.}, language = {en} } @incollection{Alt2022, author = {Alt, Helmut}, title = {Speicher speichern, Leiter leiten}, series = {Generationenprojekt Energiewende : Elektroenergiepolitik im Spannungsfeld zwischen Vision und Mission / Herbert Niederhausen (Hrsg.)}, booktitle = {Generationenprojekt Energiewende : Elektroenergiepolitik im Spannungsfeld zwischen Vision und Mission / Herbert Niederhausen (Hrsg.)}, publisher = {Books on Demand}, address = {Norderstedt}, isbn = {9783755774389}, pages = {125 -- 136}, year = {2022}, language = {de} }