@masterthesis{Eberhardt2022, type = {Bachelor Thesis}, author = {Eberhardt, Dag Norman}, title = {"I Was Here!"}, publisher = {FH Aachen}, address = {Aachen}, pages = {77 Seiten}, year = {2022}, abstract = {Die Menschheit erlebt aktuell Zeiten drastischen Wandels. Deswegen k{\"o}nnte es wohltun, einen Blick in die Vergangenheit zu werfen und sich darauf zu besinnen, wo die Menschen herkommen, wer sie waren und was seitdem bereits erreicht wurde. In dieser Grafiknovelle wird ein kleiner Steinzeitjunge namens Muami begleitet, der vor 35.000 Jahren die Verg{\"a}nglichkeit des Lebens kennenlernt. Im Verlauf des folgenden Jahres erfindet er die Selbstverewigung in der H{\"o}hlenmalerei. Mit seiner Figur soll aufgezeigt werden, dass die fr{\"u}hen Europ{\"a}er eben keine primitiven Halbaffen, sondern intelligente und außerdem zutiefst kreative Menschen waren. Trotz ihrer rauen Umwelt waren ihre Sorgen und Freuden den unseren gar nicht so un{\"a}hnlich. „I Was Here!" ist ein Versuch, ein authentisches Portr{\"a}t jener Menschen zu schaffen und dabei ihrer Welt, ihrem Leben und ihrer Kunst gerecht zu werden.}, language = {de} } @inproceedings{ChavezBermudezWollert2022, author = {Chavez Bermudez, Victor Francisco and Wollert, J{\"o}rg}, title = {10BASE-T1L industry 4.0 smart switch for field devices based on IO-Link}, series = {2022 IEEE 18th International Conference on Factory Communication Systems (WFCS)}, booktitle = {2022 IEEE 18th International Conference on Factory Communication Systems (WFCS)}, publisher = {IEEE}, isbn = {978-1-6654-1086-1}, doi = {10.1109/WFCS53837.2022.9779176}, pages = {4 Seiten}, year = {2022}, abstract = {The recent amendment to the Ethernet physical layer known as the IEEE 802.3cg specification, allows to connect devices up to a distance of one kilometer and delivers a maximum of 60 watts of power over a twisted pair of wires. This new standard, also known as 10BASE-TIL, promises to overcome the limits of current physical layers used for field devices and bring them a step closer to Ethernet-based applications. The main advantage of 10BASE- TIL is that it can deliver power and data over the same line over a long distance, where traditional solutions (e.g., CAN, IO-Link, HART) fall short and cannot match its 10 Mbps bandwidth. Due to its recentness, IOBASE- TIL is still not integrated into field devices and it has been less than two years since silicon manufacturers released the first Ethernet-PHY chips. In this paper, we present a design proposal on how field devices could be integrated into a IOBASE-TIL smart switch that allows plug-and-play connectivity for sensors and actuators and is compliant with the Industry 4.0 vision. Instead of presenting a new field-level protocol for this work, we have decided to adopt the IO-Link specification which already includes a plug-and-play approach with features such as diagnosis and device configuration. The main objective of this work is to explore how field devices could be integrated into 10BASE-TIL Ethernet, its adaption with a well-known protocol, and its integration with Industry 4.0 technologies.}, language = {en} } @masterthesis{Dereli2022, type = {Bachelor Thesis}, author = {Dereli, Aziz}, title = {[NON]HUMAN}, publisher = {FH Aachen}, address = {Aachen}, pages = {50 Seiten}, year = {2022}, abstract = {"[NON]HUMAN" ist ein 3D-animierter Kurzfilm, der in einer Zombieapokalypse spielt und sich mit dem Thema der Menschlichkeit befasst. Welche Taten k{\"o}nnen gerechtfertigt werden und welche nicht? Die Handlungsm{\"o}glichkeiten der Menschen im Zuge des Ausbruchs eines neuen Virus werfen viele moralische Fragen auf, mit denen zwischen den Zeilen gerungen wird. Denn in diesem Film bestimmen sie Leben und Tod. Das Ziel dieser Arbeit war es, eine simple Geschichte spannend zu erz{\"a}hlen, indem das Publikum durch eindrucksstarke Bilder gefesselt wird. Dabei er{\"o}ffnen 3D-Animationen neue M{\"o}glichkeiten, die insbesondere in den Aufnahmen der zerst{\"o}rten Stadt zur Geltung kommen. Diese Arbeit zeigt spielerisch, wie sich mit etwas technischem Know-How auch ohne großem Budget hochwertige Filme drehen l{\"a}sst, indem man das Potential smart aussch{\"o}pft.}, language = {de} } @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{TopcuMadabhushiStaat2022, author = {Top{\c{c}}u, Murat and Madabhushi, Gopal S.P. and Staat, Manfred}, title = {A generalized shear-lag theory for elastic stress transfer between matrix and fibres having a variable radius}, series = {International Journal of Solids and Structures}, volume = {239-240}, journal = {International Journal of Solids and Structures}, number = {Art. No. 111464}, publisher = {Elsevier}, address = {New York, NY}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2022.111464}, year = {2022}, abstract = {A generalized shear-lag theory for fibres with variable radius is developed to analyse elastic fibre/matrix stress transfer. The theory accounts for the reinforcement of biological composites, such as soft tissue and bone tissue, as well as for the reinforcement of technical composite materials, such as fibre-reinforced polymers (FRP). The original shear-lag theory proposed by Cox in 1952 is generalized for fibres with variable radius and with symmetric and asymmetric ends. Analytical solutions are derived for the distribution of axial and interfacial shear stress in cylindrical and elliptical fibres, as well as conical and paraboloidal fibres with asymmetric ends. Additionally, the distribution of axial and interfacial shear stress for conical and paraboloidal fibres with symmetric ends are numerically predicted. The results are compared with solutions from axisymmetric finite element models. A parameter study is performed, to investigate the suitability of alternative fibre geometries for use in FRP.}, 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{UysalFiratCreutzetal.2022, author = {Uysal, Karya and Firat, Ipek Serat and Creutz, Till and Aydin, Inci Cansu and Artmann, Gerhard and Teusch, Nicole and Temiz Artmann, Ayseg{\"u}l}, title = {A novel in vitro wound healing assay using free-standing, ultra-thin PDMS membranes}, series = {membranes}, volume = {2023}, journal = {membranes}, number = {13(1)}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/membranes13010022}, pages = {Artikel 22}, year = {2022}, abstract = {Advances in polymer science have significantly increased polymer applications in life sciences. We report the use of free-standing, ultra-thin polydimethylsiloxane (PDMS) membranes, called CellDrum, as cell culture substrates for an in vitro wound model. Dermal fibroblast monolayers from 28- and 88-year-old donors were cultured on CellDrums. By using stainless steel balls, circular cell-free areas were created in the cell layer (wounding). Sinusoidal strain of 1 Hz, 5\% strain, was applied to membranes for 30 min in 4 sessions. The gap circumference and closure rate of un-stretched samples (controls) and stretched samples were monitored over 4 days to investigate the effects of donor age and mechanical strain on wound closure. A significant decrease in gap circumference and an increase in gap closure rate were observed in trained samples from younger donors and control samples from older donors. In contrast, a significant decrease in gap closure rate and an increase in wound circumference were observed in the trained samples from older donors. Through these results, we propose the model of a cell monolayer on stretchable CellDrums as a practical tool for wound healing research. The combination of biomechanical cell loading in conjunction with analyses such as gene/protein expression seems promising beyond the scope published here.}, language = {en} } @article{PfaffEnningSutter2022, author = {Pfaff, Raphael and Enning, Manfred and Sutter, Stefan}, title = {A risk‑based approach to automatic brake tests for rail freight service: incident analysis and realisation concept}, series = {SN Applied Sciences}, volume = {4}, journal = {SN Applied Sciences}, number = {4}, publisher = {Springer}, address = {Cham}, issn = {2523-3971}, doi = {10.1007/s42452-022-05007-x}, pages = {1 -- 14}, year = {2022}, abstract = {This study reviews the practice of brake tests in freight railways, which is time consuming and not suitable to detect certain failure types. Public incident reports are analysed to derive a reasonable brake test hardware and communication architecture, which aims to provide automatic brake tests at lower cost than current solutions. The proposed solutions relies exclusively on brake pipe and brake cylinder pressure sensors, a brake release position switch as well as radio communication via standard protocols. The approach is embedded in the Wagon 4.0 concept, which is a holistic approach to a smart freight wagon. The reduction of manual processes yields a strong incentive due to high savings in manual labour and increased productivity.}, language = {en} } @book{BloeckerEsserHengstebecketal.2022, author = {Bl{\"o}cker, Lene Christin and Esser, Julia and Hengstebeck, Pauline and Venrath, Carolin and Scholtes, Eva}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 4. 01/2022}, editor = {Kroll-Ludwigs, Kathrin and Bernecker, Andreas and Bassen-Metz, Yasmine and Eggert, Mathias and Fritz, Thomas and Golland, Alexander and H{\"o}hne, Tim and Tran, Duc Hung and Vogt, J{\"u}rgen}, publisher = {FH Aachen / Fachbereich Wirtschaftswissenschaften}, address = {Aachen}, publisher = {Fachhochschule Aachen}, pages = {345 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis - Bachelorarbeiten 1. The impact of the EU non-financial reporting directive on sustainability reporting practices of DAX 30 companies - Lene Christin Bl{\"o}cker 4 - 29 2. Kurzarbeit als Krisenbew{\"a}ltigungsinstrument - Die arbeitsrechtlichen Voraussetzungen f{\"u}r die wirksame Einf{\"u}hrung von Kurzarbeit - Julia Esser 30 - 87 3. Die virtuelle Hauptversammlung der Aktiengesellschaft - Notl{\"o}sung w{\"a}hrend der Corona-Pandemie oder dauerhafte Alternative? - Pauline Hengstebeck 88 - 152 4. Die psychische Gesundheit am Arbeitsplatz - Aktuelle Problematik, Ursachenforschung, Folgen, rechtliche Rahmenbedingungen und geeignete Pr{\"a}ventionsmaßnahmen aus Arbeitgebersicht - Carolin Venrath 153 - 224 Inhaltsverzeichnis - Masterarbeiten The influence of religion on the representation of women in politics - Eva Scholtes 225 - 345}, language = {de} } @book{BundrockKremersPankoketal.2022, author = {Bundrock, Ronja and Kremers, Nico and Pankok, Lennard and Weisheit, Theresa Maria and Spoede, Jasper}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 5. 02/2022}, editor = {Kroll-Ludwigs, Kathrin and Bernecker, Andreas and Bassen-Metz, Yasmine and Eggert, Mathias and Fritz, Thomas and Golland, Alexander and H{\"o}hne, Tim and Tran, Duc Hung and Vogt, J{\"u}rgen}, publisher = {FH Aachen / Fachbereich Wirtschaftswissenschaften}, address = {Aachen}, publisher = {Fachhochschule Aachen}, pages = {356 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis - Bachelorarbeiten 1. Testamentsgestaltung bei Patchworkfamilien - L{\"o}sungsans{\"a}tze f{\"u}r typische Praxisprobleme unter Ber{\"u}cksichtigung der Interessenlagen der Parteien - Ronja Bundrock 4 - 58 2. Die Haftung des AG-Vorstands gegen{\"u}ber der Gesellschaft in unterneh- mensinternen und -externen Krisen - Nico Kremers 59 - 122 3. The Relationship of the Ex-Ante Uncertainty about the Value of a Stock and its IPO Underpricing - An Analysis of the German Market - Lennard Pankok 123 - 179 4. Attractiveness Bias in Venture Capital - An Analysis of Investor Decision Making in "Die H{\"o}hle der L{\"o}wen" - Theresa Maria Weisheit 180 - 242 Inhaltsverzeichnis - Masterarbeiten Erh{\"o}hung der Energieautarkie in der Backbranche - Anwendung von bidi- rektionalem Laden und dessen Auswirkungen auf die Gesch{\"a}ftsprozesse und Informationssysteme - Jasper Spoede 243 - 355}, 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} } @techreport{SiegertBongaertsWagneretal.2022, author = {Siegert, Petra and Bongaerts, Johannes and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Selmer, Thorsten}, title = {Abschlussbericht zum Projekt zur {\"U}berwachung biotechnologischer Prozesse mittels Diacetyl-/Acetoin-Biosensor und Evaluierung von Acetoin-Reduktasen zur Verwendung in Biotransformationen}, address = {Aachen}, organization = {FH Aachen}, pages = {16 Seiten}, year = {2022}, language = {de} } @masterthesis{Guth2022, type = {Bachelor Thesis}, author = {Guth, Katharina}, title = {aco : eine digitale Anwendung zur Verbesserung der Lebensqualit{\"a}t von Neurodermitis-Patient:innen}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {267 Seiten}, year = {2022}, abstract = {Neurodermitis hat in den letzten Jahrzehnten deutlich zugenommen. Etwa 10 bis 15 Prozent der Kinder und 2,5 bis 3,5 Prozent der Erwachsenen sind davon betroffen. F{\"u}r sie stellen Auswirkungen der Hautkrankheit auf K{\"o}rper und Psyche eine enorme Einschr{\"a}nkung der Lebensqualit{\"a}t dar. Die App „aco" m{\"o}chte Neurodermitis-Patient:Innen dabei unterst{\"u}tzen, ihre Behandlung selbst in die Hand zu nehmen. Eine ganzheitliche Therapie umfasst eben nicht nur Fachpersonen, sondern auch Patient:Innen selbst. Durch eine regelm{\"a}ßige Dokumentation erm{\"o}glicht die Anwendung eine aktive Auseinandersetzung mit der Krankheit. Triggerfaktoren werden ausgewertet und es wird Wissen {\"u}ber Behandlungsm{\"o}glichkeiten vermittelt. Zudem wird ein Austausch erm{\"o}glicht, der emotionale und praktische Unterst{\"u}tzung bieten soll. Damit m{\"o}chte „aco" Betroffenen eine M{\"o}glichkeit geben, das Ruder selbst in die Hand zu nehmen und leistet damit einen wichtigen Beitrag zur Therapie von Neurodermitis.}, language = {de} } @masterthesis{Sehl2022, type = {Bachelor Thesis}, author = {Sehl, Kristina}, title = {Adapt or die : Heimische W{\"a}lder im Wandel durch Mensch und Zeit}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {316 Seiten}, year = {2022}, abstract = {Wo einst fast l{\"u}ckenlos Laubw{\"a}lder wuchsen, steht heute nur noch ein Drittel der urspr{\"u}nglichen Waldfl{\"a}che. Echte Urw{\"a}lder gibt es hier schon lange nicht mehr: Die Rede ist vom deutschen Wald. Unsere Welt ist im Wandel. Auch in unseren heimischen W{\"a}ldern lassen sich die Einfl{\"u}sse von Mensch und Klimawandel auf die Biodiversit{\"a}t beobachten. Die illustrierte Publikation „Adapt or die" l{\"a}dt mit mehr als 80 großformatigen Artenportraits, Habitat-Kartierungen und gestalteten Themenklappenseiten zur Auseinandersetzung mit dem Wandel unserer heimischen W{\"a}lder ein. Dabei sensibilisiert sie f{\"u}r einen bewussteren Umgang mit Umwelt und Natur. Erweiterungen durch Augmented Reality bieten vereinzelt neben dem Printprodukt aktualisierbare Prognosen, digital und ressourcenschonend. Das komplexe {\"O}kosystem des Waldes reagiert empfindlich auf Ver{\"a}nderungen: Wer sich nicht anpassen kann, wird verschwinden.}, language = {de} } @article{KaulenSchwabedalSchneideretal.2022, author = {Kaulen, Lars and Schwabedal, Justus T. C. and Schneider, Jules and Ritter, Philipp and Bialonski, Stephan}, title = {Advanced sleep spindle identification with neural networks}, series = {Scientific Reports}, volume = {12}, journal = {Scientific Reports}, number = {Article number: 7686}, publisher = {Springer Nature}, address = {London}, issn = {2045-2322}, doi = {10.1038/s41598-022-11210-y}, pages = {1 -- 10}, year = {2022}, abstract = {Sleep spindles are neurophysiological phenomena that appear to be linked to memory formation and other functions of the central nervous system, and that can be observed in electroencephalographic recordings (EEG) during sleep. Manually identified spindle annotations in EEG recordings suffer from substantial intra- and inter-rater variability, even if raters have been highly trained, which reduces the reliability of spindle measures as a research and diagnostic tool. The Massive Online Data Annotation (MODA) project has recently addressed this problem by forming a consensus from multiple such rating experts, thus providing a corpus of spindle annotations of enhanced quality. Based on this dataset, we present a U-Net-type deep neural network model to automatically detect sleep spindles. Our model's performance exceeds that of the state-of-the-art detector and of most experts in the MODA dataset. We observed improved detection accuracy in subjects of all ages, including older individuals whose spindles are particularly challenging to detect reliably. Our results underline the potential of automated methods to do repetitive cumbersome tasks with super-human performance.}, language = {en} } @article{SchwagerFleschSchwarzboezletal.2022, author = {Schwager, Christian and Flesch, Robert and Schwarzb{\"o}zl, Peter and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e}}, title = {Advanced two phase flow model for transient molten salt receiver system simulation}, series = {Solar Energy}, volume = {232}, journal = {Solar Energy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0038-092X (print)}, doi = {10.1016/j.solener.2021.12.065}, pages = {362 -- 375}, year = {2022}, abstract = {In order to realistically predict and optimize the actual performance of a concentrating solar power (CSP) plant sophisticated simulation models and methods are required. This paper presents a detailed dynamic simulation model for a Molten Salt Solar Tower (MST) system, which is capable of simulating transient operation including detailed startup and shutdown procedures including drainage and refill. For appropriate representation of the transient behavior of the receiver as well as replication of local bulk and surface temperatures a discretized receiver model based on a novel homogeneous two-phase (2P) flow modelling approach is implemented in Modelica Dymola®. This allows for reasonable representation of the very different hydraulic and thermal properties of molten salt versus air as well as the transition between both. This dynamic 2P receiver model is embedded in a comprehensive one-dimensional model of a commercial scale MST system and coupled with a transient receiver flux density distribution from raytracing based heliostat field simulation. This enables for detailed process prediction with reasonable computational effort, while providing data such as local salt film and wall temperatures, realistic control behavior as well as net performance of the overall system. Besides a model description, this paper presents some results of a validation as well as the simulation of a complete startup procedure. Finally, a study on numerical simulation performance and grid dependencies is presented and discussed.}, language = {en} } @article{ZhantlessovaSavitskayaKistaubayevaetal.2022, author = {Zhantlessova, Sirina and Savitskaya, Irina and Kistaubayeva, Aida and Ignatova, Ludmila and Talipova, Aizhan and Pogrebnjak, Alexander and Digel, Ilya}, title = {Advanced "Green" prebiotic composite of bacterial cellulose/pullulan based on synthetic biology-powered microbial coculture strategy}, series = {Polymers}, volume = {14}, journal = {Polymers}, number = {15}, publisher = {MDPI}, address = {Basel}, issn = {2073-4360}, doi = {10.3390/polym14153224}, pages = {Artikel 3224}, year = {2022}, abstract = {Bacterial cellulose (BC) is a biopolymer produced by different microorganisms, but in biotechnological practice, Komagataeibacter xylinus is used. The micro- and nanofibrillar structure of BC, which forms many different-sized pores, creates prerequisites for the introduction of other polymers into it, including those synthesized by other microorganisms. The study aims to develop a cocultivation system of BC and prebiotic producers to obtain BC-based composite material with prebiotic activity. In this study, pullulan (PUL) was found to stimulate the growth of the probiotic strain Lactobacillus rhamnosus GG better than the other microbial polysaccharides gellan and xanthan. BC/PUL biocomposite with prebiotic properties was obtained by cocultivation of Komagataeibacter xylinus and Aureobasidium pullulans, BC and PUL producers respectively, on molasses medium. The inclusion of PUL in BC is proved gravimetrically by scanning electron microscopy and by Fourier transformed infrared spectroscopy. Cocultivation demonstrated a composite effect on the aggregation and binding of BC fibers, which led to a significant improvement in mechanical properties. The developed approach for "grafting" of prebiotic activity on BC allows preparation of environmentally friendly composites of better quality.}, language = {en} } @article{MandekarHollandThielenetal.2022, author = {Mandekar, Swati and Holland, Abigail and Thielen, Moritz and Behbahani, Mehdi and Melnykowycz, Mark}, title = {Advancing towards Ubiquitous EEG, Correlation of In-Ear EEG with Forehead EEG}, series = {Sensors}, volume = {22}, journal = {Sensors}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {1424-8220}, doi = {10.3390/s22041568}, pages = {1 -- 19}, year = {2022}, abstract = {Wearable EEG has gained popularity in recent years driven by promising uses outside of clinics and research. The ubiquitous application of continuous EEG requires unobtrusive form-factors that are easily acceptable by the end-users. In this progression, wearable EEG systems have been moving from full scalp to forehead and recently to the ear. The aim of this study is to demonstrate that emerging ear-EEG provides similar impedance and signal properties as established forehead EEG. EEG data using eyes-open and closed alpha paradigm were acquired from ten healthy subjects using generic earpieces fitted with three custom-made electrodes and a forehead electrode (at Fpx) after impedance analysis. Inter-subject variability in in-ear electrode impedance ranged from 20 kΩ to 25 kΩ at 10 Hz. Signal quality was comparable with an SNR of 6 for in-ear and 8 for forehead electrodes. Alpha attenuation was significant during the eyes-open condition in all in-ear electrodes, and it followed the structure of power spectral density plots of forehead electrodes, with the Pearson correlation coefficient of 0.92 between in-ear locations ELE (Left Ear Superior) and ERE (Right Ear Superior) and forehead locations, Fp1 and Fp2, respectively. The results indicate that in-ear EEG is an unobtrusive alternative in terms of impedance, signal properties and information content to established forehead EEG.}, 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{StaeudleSeynnesLapsetal.2022, author = {St{\"a}udle, Benjamin and Seynnes, Olivier and Laps, Guido and Br{\"u}ggemann, Gert-Peter and Albracht, Kirsten}, title = {Altered gastrocnemius contractile behavior in former achilles tendon rupture patients during walking}, series = {Frontiers in Physiology}, volume = {13}, journal = {Frontiers in Physiology}, publisher = {Frontiers Research Foundation}, address = {Lausanne}, issn = {1664-042X}, doi = {10.3389/fphys.2022.792576}, pages = {12 Seiten}, year = {2022}, abstract = {Achilles tendon rupture (ATR) remains associated with functional limitations years after injury. Architectural remodeling of the gastrocnemius medialis (GM) muscle is typically observed in the affected leg and may compensate force deficits caused by a longer tendon. Yet patients seem to retain functional limitations during—low-force—walking gait. To explore the potential limits imposed by the remodeled GM muscle-tendon unit (MTU) on walking gait, we examined the contractile behavior of muscle fascicles during the stance phase. In a cross-sectional design, we studied nine former patients (males; age: 45 ± 9 years; height: 180 ± 7 cm; weight: 83 ± 6 kg) with a history of complete unilateral ATR, approximately 4 years post-surgery. Using ultrasonography, GM tendon morphology, muscle architecture at rest, and fascicular behavior were assessed during walking at 1.5 m⋅s-1 on a treadmill. Walking patterns were recorded with a motion capture system. The unaffected leg served as control. Lower limbs kinematics were largely similar between legs during walking. Typical features of ATR-related MTU remodeling were observed during the stance sub-phases corresponding to series elastic element (SEE) lengthening (energy storage) and SEE shortening (energy release), with shorter GM fascicles (36 and 36\%, respectively) and greater pennation angles (8° and 12°, respectively). However, relative to the optimal fascicle length for force production, fascicles operated at comparable length in both legs. Similarly, when expressed relative to optimal fascicle length, fascicle contraction velocity was not different between sides, except at the time-point of peak series elastic element (SEE) length, where it was 39 ± 49\% lower in the affected leg. Concomitantly, fascicles rotation during contraction was greater in the affected leg during the whole stance-phase, and architectural gear ratios (AGR) was larger during SEE lengthening. Under the present testing conditions, former ATR patients had recovered a relatively symmetrical walking gait pattern. Differences in seen AGR seem to accommodate the profound changes in MTU architecture, limiting the required fascicle shortening velocity. Overall, the contractile behavior of the GM fascicles does not restrict length- or velocity-dependent force potentials during this locomotor task.}, 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} } @masterthesis{Steimel2022, type = {Bachelor Thesis}, author = {Steimel, Nina}, title = {An den Rand gedr{\"a}ngt : die Marginalisierung unserer St{\"a}dte}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {55 Seiten}, year = {2022}, abstract = {In der Arbeit »An den Rand gedr{\"a}ngt-Die Marginalisierung unserer St{\"a}dte« wird anhand des Fl{\"a}chenverbrauchs des ruhenden Verkehrs er{\"o}rtert, inwieweit der private Pkw die Entwicklung unserer St{\"a}dte bestimmt. Die Zusammenstellung verschiedener Texte, Raumbeobachtungen und fotografischer Zeitdokumente soll die Problematik und Aktualit{\"a}t des Themas verst{\"a}rken. Schritt f{\"u}r Schritt sollen die Leser:innen einen neuen Blick auf die eigene Stadt gewinnen und f{\"u}r das Problem der akuten Fl{\"a}chenknappheit sensibilisiert werden. Das Werk versteht sich als Aufruf, unseren Straßenraum zu entkarbonisieren, ihn neu zu entdecken und die m{\"o}glichen Chancen im Wandel zu erkennen. Dabei geht es zun{\"a}chst nicht um die Aufz{\"a}hlung von Klimasch{\"a}den, die Abschaffung von Parkpl{\"a}tzen oder gar des Autos, sondern um die Auswirkungen, die Parkpl{\"a}tze auf unser Leben haben und vor allem um ihr Potenzial f{\"u}r die Zukunft.}, language = {de} } @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{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} } @inproceedings{SchubaHoefkenLinzbach2022, author = {Schuba, Marko and H{\"o}fken, Hans-Wilhelm and Linzbach, Sophie}, title = {An ICS Honeynet for Detecting and Analyzing Cyberattacks in Industrial Plants}, series = {2021 International Conference on Electrical, Computer and Energy Technologies (ICECET)}, booktitle = {2021 International Conference on Electrical, Computer and Energy Technologies (ICECET)}, publisher = {IEEE}, isbn = {978-1-6654-4231-2}, doi = {10.1109/ICECET52533.2021.9698746}, pages = {6 Seiten}, year = {2022}, abstract = {Cybersecurity of Industrial Control Systems (ICS) is an important issue, as ICS incidents may have a direct impact on safety of people or the environment. At the same time the awareness and knowledge about cybersecurity, particularly in the context of ICS, is alarmingly low. Industrial honeypots offer a cheap and easy to implement way to raise cybersecurity awareness and to educate ICS staff about typical attack patterns. When integrated in a productive network, industrial honeypots may not only reveal attackers early but may also distract them from the actual important systems of the network. Implementing multiple honeypots as a honeynet, the systems can be used to emulate or simulate a whole Industrial Control System. This paper describes a network of honeypots emulating HTTP, SNMP, S7communication and the Modbus protocol using Conpot, IMUNES and SNAP7. The nodes mimic SIMATIC S7 programmable logic controllers (PLCs) which are widely used across the globe. The deployed honeypots' features will be compared with the features of real SIMATIC S7 PLCs. Furthermore, the honeynet has been made publicly available for ten days and occurring cyberattacks have been analyzed}, 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} } @article{CheenakulaHoffstadtKrafftetal.2022, author = {Cheenakula, Dheeraja and Hoffstadt, Kevin and Krafft, Simone and Reinecke, Diana and Klose, Holger and Kuperjans, Isabel and Gr{\"o}mping, Markus}, title = {Anaerobic digestion of algal-bacterial biomass of an Algal Turf Scrubber system}, series = {Biomass Conversion and Biorefinery}, volume = {13}, journal = {Biomass Conversion and Biorefinery}, publisher = {Springer}, address = {Berlin}, issn = {2190-6823}, doi = {10.1007/s13399-022-03236-z}, pages = {15 Seiten}, year = {2022}, abstract = {This study investigated the anaerobic digestion of an algal-bacterial biofilm grown in artificial wastewater in an Algal Turf Scrubber (ATS). The ATS system was located in a greenhouse (50°54′19ʺN, 6°24′55ʺE, Germany) and was exposed to seasonal conditions during the experiment period. The methane (CH4) potential of untreated algal-bacterial biofilm (UAB) and thermally pretreated biofilm (PAB) using different microbial inocula was determined by anaerobic batch fermentation. Methane productivity of UAB differed significantly between microbial inocula of digested wastepaper, a mixture of manure and maize silage, anaerobic sewage sludge, and percolated green waste. UAB using sewage sludge as inoculum showed the highest methane productivity. The share of methane in biogas was dependent on inoculum. Using PAB, a strong positive impact on methane productivity was identified for the digested wastepaper (116.4\%) and a mixture of manure and maize silage (107.4\%) inocula. By contrast, the methane yield was significantly reduced for the digested anaerobic sewage sludge (50.6\%) and percolated green waste (43.5\%) inocula. To further evaluate the potential of algal-bacterial biofilm for biogas production in wastewater treatment and biogas plants in a circular bioeconomy, scale-up calculations were conducted. It was found that a 0.116 km2 ATS would be required in an average municipal wastewater treatment plant which can be viewed as problematic in terms of space consumption. However, a substantial amount of energy surplus (4.7-12.5 MWh a-1) can be gained through the addition of algal-bacterial biomass to the anaerobic digester of a municipal wastewater treatment plant. Wastewater treatment and subsequent energy production through algae show dominancy over conventional technologies.}, language = {en} } @inproceedings{GedleSchmitzGielenetal.2022, author = {Gedle, Yibekal and Schmitz, Mark and Gielen, Hans and Schmitz, Pascal and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e} and Mahdi, Zahra and Caminos, Ricardo Alexander Chico and Dersch, J{\"u}rgen}, title = {Analysis of an integrated CSP-PV hybrid power plant}, series = {SolarPACES 2020}, booktitle = {SolarPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086236}, pages = {9 Seiten}, year = {2022}, abstract = {In the past, CSP and PV have been seen as competing technologies. Despite massive reductions in the electricity generation costs of CSP plants, PV power generation is - at least during sunshine hours - significantly cheaper. If electricity is required not only during the daytime, but around the clock, CSP with its inherent thermal energy storage gets an advantage in terms of LEC. There are a few examples of projects in which CSP plants and PV plants have been co-located, meaning that they feed into the same grid connection point and ideally optimize their operation strategy to yield an overall benefit. In the past eight years, TSK Flagsol has developed a plant concept, which merges both solar technologies into one highly Integrated CSP-PV-Hybrid (ICPH) power plant. Here, unlike in simply co-located concepts, as analyzed e.g. in [1] - [4], excess PV power that would have to be dumped is used in electric molten salt heaters to increase the storage temperature, improving storage and conversion efficiency. The authors demonstrate the electricity cost sensitivity to subsystem sizing for various market scenarios, and compare the resulting optimized ICPH plants with co-located hybrid plants. Independent of the three feed-in tariffs that have been assumed, the ICPH plant shows an electricity cost advantage of almost 20\% while maintaining a high degree of flexibility in power dispatch as it is characteristic for CSP power plants. As all components of such an innovative concept are well proven, the system is ready for commercial market implementation. A first project is already contracted and in early engineering execution.}, language = {en} } @article{FunkeEschRoosen2022, author = {Funke, Harald and Esch, Thomas and Roosen, Petra}, title = {Antriebssystemanpassungen zur Verwendung von LPG als Flugkraftstoff}, series = {Motortechnische Zeitschrift (MTZ)}, volume = {2022}, journal = {Motortechnische Zeitschrift (MTZ)}, number = {83}, publisher = {Springer Nature}, address = {Basel}, doi = {10.1007/s35146-021-0778-2}, pages = {58 -- 62}, year = {2022}, abstract = {Auch in der allgemeinen Luftfahrt w{\"a}re es w{\"u}nschenswert, die bereits vorhandenen Verbrennungsmotoren mit weniger CO₂-tr{\"a}chtigen Kraftstoffen als dem heute weit verbreiteten Avgas 100LL betreiben zu k{\"o}nnen. Es ist anzunehmen, dass im Vergleich die unter Normalbedingungen gasf{\"o}rmigen Kraftstoffe CNG, LPG oder LNG deutlich weniger Emissionen produzieren. Erforderliche Antriebssystemanpassungen wurden im Rahmen eines Forschungsprojekts an der FH Aachen untersucht.}, language = {de} } @masterthesis{Switalla2022, type = {Bachelor Thesis}, author = {Switalla, Justin}, title = {Applause : Entwicklung eines Dokumentationssystems f{\"u}r die station{\"a}re Altenpflege - Konzeption einer zukunftsgewandten Dokumentationsl{\"o}sung}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {213 Seiten}, year = {2022}, abstract = {Der Personalmangel in der Pflege ist vor allem durch die Pandemie in den Fokus der {\"O}ffentlichkeit ger{\"u}ckt. Diese Situation wird sich in den n{\"a}chsten Jahren aufgrund der steigenden Pflegequote in Folge des demografischen Wandels weiter zuspitzen. Das Dokumentieren der durchgef{\"u}hrten T{\"a}tigkeiten nimmt dabei viel Zeit in Anspruch, die nicht den Bewohner:innen zugutekommt. Das Dokumentationssystem „Applause" soll Pflege- und Betreuungskr{\"a}fte in ihrer Arbeit unterst{\"u}tzen und durch die einfache Nutzerf{\"u}hrung den Schulungsaufwand reduzieren. Durch die Integration von modernen medizinischen Sensoren kann innerhalb des Systems der aktuelle Gesundheitsstatus der Bewohner:innen eingesehen werden. Zus{\"a}tzlich wird die interne sowie externe Kommunikation innerhalb des Dokumentationssystems abgebildet. Bei Letzterer wird mittels einer datenschutzkonformen Software die auf Fax basierende Kommunikation abgel{\"o}st.}, language = {de} } @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} } @article{OjovanSteinmetz2022, author = {Ojovan, Michael I. and Steinmetz, Hans-J{\"u}rgen}, title = {Approaches to Disposal of Nuclear Waste}, series = {Energies}, volume = {15}, journal = {Energies}, number = {20}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {10.3390/en15207804}, pages = {Artikel 7804}, year = {2022}, abstract = {We present a concise mini overview on the approaches to the disposal of nuclear waste currently used or deployed. The disposal of nuclear waste is the end point of nuclear waste management (NWM) activities and is the emplacement of waste in an appropriate facility without the intention to retrieve it. The IAEA has developed an internationally accepted classification scheme based on the end points of NWM, which is used as guidance. Retention times needed for safe isolation of waste radionuclides are estimated based on the radiotoxicity of nuclear waste. Disposal facilities usually rely on a multi-barrier defence system to isolate the waste from the biosphere, which comprises the natural geological barrier and the engineered barrier system. Disposal facilities could be of a trench type, vaults, tunnels, shafts, boreholes, or mined repositories. A graded approach relates the depth of the disposal facilities' location with the level of hazard. Disposal practices demonstrate the reliability of nuclear waste disposal with minimal expected impacts on the environment and humans.}, language = {en} } @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{Wabner2022, type = {Bachelor Thesis}, author = {Wabner, Magnus}, title = {Aroux}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {95 Seiten}, year = {2022}, abstract = {Aeroux ist eine Formstudie {\"u}ber die Gestalt einer Luftschiffgondel. Luftschiffe bzw. Zeppeline werden oft mit dem Ungl{\"u}ck der Hindenburg in Lakehurst in Verbindung gebracht. Aeroux versucht diese Assoziation zu {\"u}berwinden und Luftschiffe in der Gegenwart zu verankern. Durch die gezielte, psychologisch inspirierte Gestaltung soll Sicherheit und Ruhe vermittelt werden, sollen spezifische Assoziationen geweckt werden, die weg f{\"u}hren von Bildern vergangener Tage eines brennenden Luftschiffs, um so Zeppeline als klimafreundlichere Alternative zum Flugzeug wieder ins Spiel zu bringen. Aeroux ist ein hybrides Verkehrsmittel, dass in der Lage ist, sowohl G{\"u}ter als auch Personen in verschiedenen Szenarien zu transportieren. Zeppeline bauchen keine befestigten Landebahnen oder Pisten. Regionen, die {\"u}ber Straßen schwer zug{\"a}nglich sind, k{\"o}nnen so in den Warenhandel integriert werden. Gleichermaßen k{\"o}nnen aber auch Meschen in Regionen bef{\"o}rdert werden, die durch Straßen oder Landebahnen nicht oder unzureichend erschlossen sind. Dar{\"u}ber hinaus kann Aeroux ein Ansatz sein die Unvertr{\"a}glichkeit von Fliegen und Klimaschutz aufzul{\"o}sen. Nicht zuletzt liegt in der gem{\"a}chlichen Art der Bewegung ein besonderer Zauber. Reisen k{\"o}nnten einen neuen Charakter erhalten: durch die großen Fensterfronten und die geringe Flugh{\"o}he k{\"o}nnen Landschaften auf der Reise neu wahrgenommen werden, der Weg wird wieder Teil des Reisens. Die Arbeit ist in erster Linie eine Auseinandersetzung mit der Form. Wie wirkt Form, wie lassen sich Assoziationen wecken, lenken, leiten. Wie kann technischer Anspruch, gesellschaftliche Bedingung, {\"o}kologisches Bewusstsein und nicht zuletzt Genuss in einem Objekt resultieren. Digitale und analoge Fertigung spielen im Zuge der Arbeit ineinander. So entstand das Design der Gondel, nach ersten h{\"a}ndischen Skizzen, digital. Das Model der Gondel wurde aus diesen Daten 3D gedruckt und die Darstellung der Tragh{\"u}lle ebenfalls auf Grundlage dieser Daten gelasert. Aeroux m{\"o}chte Lust auf alternatives Sehen, Denken und Handeln machen. Es gilt viel zu bewegen.}, language = {de} } @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{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{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} } @book{Laack2022, author = {Laack, Walter van}, title = {Aufruf zum Nachdenken: Corona und neue Kriege - Wie kann die Menschheit {\"u}berleben?}, publisher = {van Laack GmbH}, address = {Aachen}, isbn = {978-3-936624-56-4}, pages = {56 Seiten}, year = {2022}, language = {de} } @article{Golland2022, author = {Golland, Alexander}, title = {Aufsicht und Rechtsdurchsetzung bei unzul{\"a}ssigem Einsatz von Cookies \& Co. unter Geltung des TTDSG}, series = {DSB Datenschutz-Berater}, volume = {46}, journal = {DSB Datenschutz-Berater}, number = {1}, publisher = {Deutscher Fachverlag GmbH}, address = {Frankfurt a.M.}, isbn = {0170-7256}, pages = {14 -- 16}, year = {2022}, language = {de} } @inproceedings{VeettilRakshitSchopenetal.2022, author = {Veettil, Yadu Krishna Morassery and Rakshit, Shantam and Schopen, Oliver and Kemper, Hans and Esch, Thomas and Shabani, Bahman}, title = {Automated Control System Strategies to Ensure Safety of PEM Fuel Cells Using Kalman Filters}, series = {Proceedings of the 7th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2021), Melaka, Malaysia}, booktitle = {Proceedings of the 7th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2021), Melaka, Malaysia}, editor = {Bin Abdollah, Mohd Fadzli and Amiruddin, Hilmi and Singh, Amrik Singh Phuman and Munir, Fudhail Abdul and Ibrahim, Asriana}, publisher = {Springer Nature}, address = {Singapore}, isbn = {978-981-19-3178-9}, issn = {2195-4356}, doi = {10.1007/978-981-19-3179-6_55}, pages = {296 -- 299}, year = {2022}, abstract = {Having well-defined control strategies for fuel cells, that can efficiently detect errors and take corrective action is critically important for safety in all applications, and especially so in aviation. The algorithms not only ensure operator safety by monitoring the fuel cell and connected components, but also contribute to extending the health of the fuel cell, its durability and safe operation over its lifetime. While sensors are used to provide peripheral data surrounding the fuel cell, the internal states of the fuel cell cannot be directly measured. To overcome this restriction, Kalman Filter has been implemented as an internal state observer. Other safety conditions are evaluated using real-time data from every connected sensor and corrective actions automatically take place to ensure safety. The algorithms discussed in this paper have been validated thorough Model-in-the-Loop (MiL) tests as well as practical validation at a dedicated test bench.}, 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} } @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} } @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} } @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{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{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} } @article{FalkenbergRahbaFischeretal.2022, author = {Falkenberg, Fabian and Rahba, Jade and Fischer, David and Bott, Michael and Bongaerts, Johannes and Siegert, Petra}, title = {Biochemical characterization of a novel oxidatively stable, halotolerant, and high-alkaline subtilisin from Alkalihalobacillus okhensis Kh10-101T}, series = {FEBS Open Bio}, volume = {12}, journal = {FEBS Open Bio}, number = {10}, publisher = {Wiley}, address = {Hoboken, NJ}, issn = {2211-5463}, doi = {10.1002/2211-5463.13457}, pages = {1729 -- 1746}, year = {2022}, abstract = {Halophilic and halotolerant microorganisms represent a promising source of salt-tolerant enzymes suitable for various biotechnological applications where high salt concentrations would otherwise limit enzymatic activity. Considering the current growing enzyme market and the need for more efficient and new biocatalysts, the present study aimed at the characterization of a high-alkaline subtilisin from Alkalihalobacillus okhensis Kh10-101T. The protease gene was cloned and expressed in Bacillus subtilis DB104. The recombinant protease SPAO with 269 amino acids belongs to the subfamily of high-alkaline subtilisins. The biochemical characteristics of purified SPAO were analyzed in comparison with subtilisin Carlsberg, Savinase, and BPN'. SPAO, a monomer with a molecular mass of 27.1 kDa, was active over a wide range of pH 6.0-12.0 and temperature 20-80 °C, optimally at pH 9.0-9.5 and 55 °C. The protease is highly oxidatively stable to hydrogen peroxide and retained 58\% of residual activity when incubated at 10 °C with 5\% (v/v) H2O2 for 1 h while stimulated at 1\% (v/v) H2O2. Furthermore, SPAO was very stable and active at NaCl concentrations up to 5.0 m. This study demonstrates the potential of SPAO for biotechnological applications in the future.}, language = {en} } @article{QuittmannAbelAlbrachtetal.2022, author = {Quittmann, Oliver J. and Abel, Thomas and Albracht, Kirsten and Str{\"u}der, Heiko K.}, title = {Biomechanics of all-out handcycling exercise: kinetics, kinematics and muscular activity of a 15-s sprint test in able-bodied participants}, series = {Sports Biomechanics}, volume = {21}, journal = {Sports Biomechanics}, number = {10}, publisher = {Taylor \& Francis}, address = {London}, issn = {1752-6116 (Onlineausgabe)}, doi = {10.1080/14763141.2020.1745266}, pages = {1200 -- 1223}, year = {2022}, abstract = {This study aims to quantify the kinematics, kinetics and muscular activity of all-out handcycling exercise and examine their alterations during the course of a 15-s sprint test. Twelve able-bodied competitive triathletes performed a 15-s all-out sprint test in a recumbent racing handcycle that was attached to an ergometer. During the sprint test, tangential crank kinetics, 3D joint kinematics and muscular activity of 10 muscles of the upper extremity and trunk were examined using a power metre, motion capturing and surface electromyography (sEMG), respectively. Parameters were compared between revolution one (R1), revolution two (R2), the average of revolution 3 to 13 (R3) and the average of the remaining revolutions (R4). Shoulder abduction and internal-rotation increased, whereas maximal shoulder retroversion decreased during the sprint. Except for the wrist angles, angular velocity increased for every joint of the upper extremity. Several muscles demonstrated an increase in muscular activation, an earlier onset of muscular activation in crank cycle and an increased range of activation. During the course of a 15-s all-out sprint test in handcycling, the shoulder muscles and the muscles associated to the push phase demonstrate indications for short-duration fatigue. These findings are helpful to prevent injuries and improve performance in all-out handcycling.}, 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} } @misc{Rouenhoff2022, type = {Master Thesis}, author = {Rouenhoff, Saskia}, title = {Blind - invisible connection : ein Spiel zur kritischen Auseinandersetzung mit den sozialen Medien.}, publisher = {FH Aachen}, address = {Aachen}, pages = {321 Seiten}, year = {2022}, abstract = {Im Computerspiel „blind - invisible connection" taucht der Spieler in eine Fantasiewelt ein, die die sozialen Medien widerspiegelt und von einer Maschine beherrscht wird. Um zu erfahren, was in dieser Welt geschehen ist, muss die Geschichte Schritt f{\"u}r Schritt erspielt und wie ein Puzzle zusammengesetzt werden. Dabei interagieren die Spieler:innen mittels Dialogen mit den Bewohner:innen der Fantasiewelt und l{\"o}sen R{\"a}tsel, die die Geschichte enth{\"u}llen. Durch Analogien zwischen der Fantasiewelt und den sozialen Medien wird die Funktionsweise und der Einfluss der Plattformen auf die Menschen und die Gesellschaft verdeutlicht. So wird eine Reflexion des eigenen Umgangs mit den sozialen Medien angeregt und Gespr{\"a}chsstoff f{\"u}r Diskussionen unter den Spieler:innen und Mitmenschen geliefert.}, 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{Gaspard2022, type = {Bachelor Thesis}, author = {Gaspard, Luca}, title = {Bratnice}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {24 Seiten}, year = {2022}, abstract = {Als Sohn meines Vaters und Enkelsohn meiner Großeltern war Slowenien immer Bestandteil meiner Sozialisation, ein unsichtbarer Teil, dem ich durch meine Fotografien auf der Reise nach „Bratnice" eine Gestalt gegeben habe. Dabei handelt es sich um ein Dorf, indem meine Familie vor ungef{\"a}hr 35 Jahren eine Holzh{\"u}tte unmittelbar in der N{\"a}he der Geburtsst{\"a}tte meines Großvaters errichtet hat. Ich begann den alten Geschichten Eigene hinzuzuf{\"u}gen, die alten Bilder um neue zu erweitern und Slowenien und die Menschen neu kennenzulernen. Dies heißt auch, mich zum Teil von den Vorstellungen meines Vaters und denen meiner Großeltern loszul{\"o}sen. Meine eigene Auseinandersetzung mit der slowenischen - ehemals sozialistischen - Realit{\"a}t und dem kapitalistisch westlichen System ist eng verkn{\"u}pft mit einer Untersuchung des Begriffs „Status". Wie sind meine slowenischen und deutschen Wurzeln f{\"u}r mich vereinbar? Woher kommt das Streben nach den einschl{\"a}gigen Statussymbolen und sind materielle Vorstellungen immer noch pr{\"a}gend?}, language = {de} } @masterthesis{Wick2022, type = {Bachelor Thesis}, author = {Wick, Dorian}, title = {bulk : Konzeption und Gestaltung einer mobilen Anwendung eines nachhaltigen Unverpackt-Lieferservice}, publisher = {FH Aachen}, address = {Aachen}, pages = {171 Seiten}, year = {2022}, abstract = {Die Welt wird wortw{\"o}rtlich von Plastik {\"u}berschwemmt- und trotzdem ist kein Ende des trivialen Verpackungsmaterials in Sicht. Die, die sich den Konsequenzen ihres Konsumverhaltens bewusst sind, haben immer noch keinen fl{\"a}chendeckenden Zugang zu Unverpacktl{\"a}den und es mangelt schlicht an praktischen Alternativen. Hier kn{\"u}pft die App „bulk" an und schl{\"a}gt ausschließlich unverpackte Lebensmittel vor - bequem bis zur Haust{\"u}r geliefert. Das Angebot ist qualitativ hochwertig und meist regional. F{\"u}r ein positives Kauferlebnis veranschaulicht „bulk", wie viel Plastik mit den Produkten im Vergleich zu einem konventionellen Wocheneinkauf eingespart werden kann. Das gibt Nutzer:Innen eine Grundlage, ihre Entscheidungen kritisch zu hinterfragen und schult den Blick f{\"u}r den Impact sich summierender Kleinigkeiten.}, 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} } @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{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} } @inproceedings{HorikawaAshikagaYamaguchietal.2022, author = {Horikawa, Atsushi and Ashikaga, Mitsugu and Yamaguchi, Masato and Ogino, Tomoyuki and Aoki, Shigeki and Wirsum, Manfred and Funke, Harald and Kusterer, Karsten}, title = {Combined heat and power supply demonstration of Micro-Mix Hydrogen Combustion Applied to M1A-17 Gas Turbine}, series = {Proceedings of ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition (GT2022) (Volume 3A)}, booktitle = {Proceedings of ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition (GT2022) (Volume 3A)}, publisher = {American Society of Mechanical Engineers}, address = {Fairfield}, isbn = {978-0-7918-8599-4}, doi = {10.1115/GT2022-81620}, pages = {7 Seiten}, year = {2022}, abstract = {Kawasaki Heavy Industries, Ltd. (KHI), Aachen University of Applied Sciences, and B\&B-AGEMA GmbH have investigated the potential of low NOx micro-mix (MMX) hydrogen combustion and its application to an industrial gas turbine combustor. Engine demonstration tests of a MMX combustor for the M1A-17 gas turbine with a co-generation system were conducted in the hydrogen-fueled power generation plant in Kobe City, Japan. This paper presents the results of the commissioning test and the combined heat and power (CHP) supply demonstration. In the commissioning test, grid interconnection, loading tests and load cut-off tests were successfully conducted. All measurement results satisfied the Japanese environmental regulation values. Dust and soot as well as SOx were not detected. The NOx emissions were below 84 ppmv at 15 \% O2. The noise level at the site boundary was below 60 dB. The vibration at the site boundary was below 45 dB. During the combined heat and power supply demonstration, heat and power were supplied to neighboring public facilities with the MMX combustion technology and 100 \% hydrogen fuel. The electric power output reached 1800 kW at which the NOx emissions were 72 ppmv at 15 \% O2, and 60 \%RH. Combustion instabilities were not observed. The gas turbine efficiency was improved by about 1 \% compared to a non-premixed type combustor with water injection as NOx reduction method. During a total equivalent operation time of 1040 hours, all combustor parts, the M1A-17 gas turbine as such, and the co-generation system were without any issues.}, language = {en} } @masterthesis{Jesse2022, type = {Bachelor Thesis}, author = {Jesse, Judith}, title = {Coming to Equal Sex : eine Aufkl{\"a}rungskampagne zur Orgasmusl{\"u}cke}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {71 Seiten}, year = {2022}, abstract = {Die „Orgasmusl{\"u}cke" ist ein Begriff aus der Sexualforschung, der die Ungleichheit von Orgasmen zwischen den verschiedenen Geschlechtern und Sexualit{\"a}ten beschreibt. Sie beruht dabei vor allem auf das problematische Verst{\"a}ndnis von Sex, das durch verschiedene kulturelle Einfl{\"u}sse vermittelt wird. Um {\"u}ber diese Einfl{\"u}sse aufzukl{\"a}ren, wurde das Format „fuckfulness" konzipiert. Mithilfe von animierten Videos und darauf aufbauendem Social-Media-Content befasst sich „fuckfulness" ausf{\"u}hrlich mit allen Hintergr{\"u}nden der Orgasmusl{\"u}cke und gestaltet sexuelle Aufkl{\"a}rung neu. Durch junge und moderne Kommunikation wird das Projekt auch f{\"u}r eine j{\"u}ngere Zielgruppe unterhaltsam. Ziel ist ein neues Verst{\"a}ndnis von Sex, in dem die Bed{\"u}rfnisse der Frau gleichberechtigt neben denen des Mannes stehen und entsprechende Beachtung finden. So soll die Orgasmusl{\"u}cke schmaler werden, damit die Gleichstellung endlich auch in den eigenen vier W{\"a}nden gelebt werden kann.}, language = {de} } @inproceedings{BergmannGoettenBraunetal.2022, author = {Bergmann, Ole and G{\"o}tten, Falk and Braun, Carsten and Janser, Frank}, title = {Comparison and evaluation of blade element methods against RANS simulations and test data}, series = {CEAS Aeronautical Journal}, volume = {13}, booktitle = {CEAS Aeronautical Journal}, publisher = {Springer}, address = {Wien}, issn = {1869-5590 (Online)}, doi = {10.1007/s13272-022-00579-1}, pages = {535 -- 557}, year = {2022}, abstract = {This paper compares several blade element theory (BET) method-based propeller simulation tools, including an evaluation against static propeller ground tests and high-fidelity Reynolds-Average Navier Stokes (RANS) simulations. Two proprietary propeller geometries for paraglider applications are analysed in static and flight conditions. The RANS simulations are validated with the static test data and used as a reference for comparing the BET in flight conditions. The comparison includes the analysis of varying 2D aerodynamic airfoil parameters and different induced velocity calculation methods. The evaluation of the BET propeller simulation tools shows the strength of the BET tools compared to RANS simulations. The RANS simulations underpredict static experimental data within 10\% relative error, while appropriate BET tools overpredict the RANS results by 15-20\% relative error. A variation in 2D aerodynamic data depicts the need for highly accurate 2D data for accurate BET results. The nonlinear BET coupled with XFOIL for the 2D aerodynamic data matches best with RANS in static operation and flight conditions. The novel BET tool PropCODE combines both approaches and offers further correction models for highly accurate static and flight condition results.}, language = {en} } @article{MalinowskiFournierHorbachetal.2022, author = {Malinowski, Daniel and Fournier, Yvan and Horbach, Andreas and Frick, Michael and Magliani, Mirko and Kalverkamp, Sebastian and Hildinger, Martin and Spillner, Jan and Behbahani, Mehdi and Hima, Flutura}, title = {Computational fluid dynamics analysis of endoluminal aortic perfusion}, series = {Perfusion}, volume = {0}, journal = {Perfusion}, number = {0}, publisher = {Sage}, address = {London}, issn = {1477-111X}, doi = {10.1177/02676591221099809}, pages = {1 -- 8}, year = {2022}, abstract = {Introduction: In peripheral percutaneous (VA) extracorporeal membrane oxygenation (ECMO) procedures the femoral arteries perfusion route has inherent disadvantages regarding poor upper body perfusion due to watershed. With the advent of new long flexible cannulas an advancement of the tip up to the ascending aorta has become feasible. To investigate the impact of such long endoluminal cannulas on upper body perfusion, a Computational Fluid Dynamics (CFD) study was performed considering different support levels and three cannula positions. Methods: An idealized literature-based- and a real patient proximal aortic geometry including an endoluminal cannula were constructed. The blood flow was considered continuous. Oxygen saturation was set to 80\% for the blood coming from the heart and to 100\% for the blood leaving the cannula. 50\% and 90\% venoarterial support levels from the total blood flow rate of 6 l/min were investigated for three different positions of the cannula in the aortic arch. Results: For both geometries, the placement of the cannula in the ascending aorta led to a superior oxygenation of all aortic blood vessels except for the left coronary artery. Cannula placements at the aortic arch and descending aorta could support supra-aortic arteries, but not the coronary arteries. All positions were able to support all branches with saturated blood at 90\% flow volume. Conclusions: In accordance with clinical observations CFD analysis reveals, that retrograde advancement of a long endoluminal cannula can considerably improve the oxygenation of the upper body and lead to oxygen saturation distributions similar to those of a central cannulation.}, language = {en} } @incollection{HoffschmidtAlexopoulosRauetal.2022, author = {Hoffschmidt, Bernhard and Alexopoulos, Spiros and Rau, Christoph and Sattler, Johannes, Christoph and Anthrakidis, Anette and Teixeira Boura, Cristiano Jos{\´e} and O'Connor, B. and Chico Caminos, R.A. and Rend{\´o}n, C. and Hilger, P.}, title = {Concentrating solar power}, series = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications}, booktitle = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-0-12-819734-9}, pages = {670 -- 724}, year = {2022}, abstract = {The focus of this chapter is the production of power and the use of the heat produced from concentrated solar thermal power (CSP) systems. The chapter starts with the general theoretical principles of concentrating systems including the description of the concentration ratio, the energy and mass balance. The power conversion systems is the main part where solar-only operation and the increase in operational hours. Solar-only operation include the use of steam turbines, gas turbines, organic Rankine cycles and solar dishes. The operational hours can be increased with hybridization and with storage. Another important topic is the cogeneration where solar cooling, desalination and of heat usage is described. Many examples of commercial CSP power plants as well as research facilities from the past as well as current installed and in operation are described in detail. The chapter closes with economic and environmental aspects and with the future potential of the development of CSP around the world.}, language = {en} } @inproceedings{SchulteSchwagerFrantzetal.2022, author = {Schulte, Jonas and Schwager, Christian and Frantz, Cathy and Schloms, Felix and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Control concept for a molten salt receiver in star design: Development, optimization and testing with cloud passage scenarios}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {Vol. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.693}, pages = {9 Seiten}, year = {2022}, abstract = {A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so.}, language = {en} } @article{AbbasBalcBremenetal.2022, author = {Abbas, Karim and Balc, Nicolae and Bremen, Sebastian and Skupin, Marco}, title = {Crystallization and aging behavior of polyetheretherketone PEEK within rapid tooling and rubber molding}, series = {Journal of Manufacturing and Materials Processing}, volume = {6}, journal = {Journal of Manufacturing and Materials Processing}, number = {5}, publisher = {MDPI}, address = {Basel}, issn = {2504-4494}, doi = {10.3390/jmmp6050093}, pages = {1 -- 12}, year = {2022}, abstract = {In times of short product life cycles, additive manufacturing and rapid tooling are important methods to make tool development and manufacturing more efficient. High-performance polymers are the key to mold production for prototypes and small series. However, the high temperatures during vulcanization injection molding cause thermal aging and can impair service life. The extent to which the thermal stress over the entire process chain stresses the material and whether it leads to irreversible material aging is evaluated. To this end, a mold made of PEEK is fabricated using fused filament fabrication and examined for its potential application. The mold is heated to 200 ◦C, filled with rubber, and cured. A differential scanning calorimetry analysis of each process step illustrates the crystallization behavior and first indicates the material resistance. It shows distinct cold crystallization regions at a build chamber temperature of 90 ◦C. At an ambient temperature above Tg, crystallization of 30\% is achieved, and cold crystallization no longer occurs. Additional tensile tests show a decrease in tensile strength after ten days of thermal aging. The steady decrease in recrystallization temperature indicates degradation of the additives. However, the tensile tests reveal steady embrittlement of the material due to increasing crosslinking.}, language = {en} } @incollection{SchubaHoefken2022, author = {Schuba, Marko and H{\"o}fken, Hans-Wilhelm}, title = {Cybersicherheit in Produktion, Automotive und intelligenten Geb{\"a}uden}, series = {IT-Sicherheit - Technologien und Best Practices f{\"u}r die Umsetzung im Unternehmen}, booktitle = {IT-Sicherheit - Technologien und Best Practices f{\"u}r die Umsetzung im Unternehmen}, publisher = {Carl Hanser Verlag}, address = {M{\"u}nchen}, isbn = {978-3-446-47223-5}, doi = {10.3139/9783446473478.012}, pages = {193 -- 218}, year = {2022}, language = {de} } @masterthesis{Wojcieszak2022, type = {Bachelor Thesis}, author = {Wojcieszak, Marc David}, title = {Da Capo - The Town of Music}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {43 Seiten}, year = {2022}, abstract = {In dem Film geht es um die Musikstadt "Da Capo", in der jedes Genre sein eigenes Viertel hat. Unser Protagonist wurde im falschen Viertel geboren und muss sich nun heraus musizieren.}, language = {de} } @masterthesis{Koscielniak2022, type = {Bachelor Thesis}, author = {Koscielniak, Luise}, title = {Das Ludwig Forum Aachen : die Erstellung eines neuen Erscheinungsbildes}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {122 Seiten}, year = {2022}, abstract = {Peter und Irene Ludwig galten als das Kunstsammlerpaar Deutschlands. Sie stellten ihre umfangreiche Sammlung der {\"O}ffentlichkeit zur Verf{\"u}gung, so auch dem Ludwig Forum - das Stammmuseum der beiden Aachener. Doch es ist viel mehr als nur ein Museum. Der Gedanke des Forums als einen Ort des Austausches und der Kommunikation mit und {\"u}ber Kunst ist die leittragende Idee. Das neue Erscheinungsbild leitet sich in der Gestaltung bildlich von diesem Forumsgedanken ab. Zur Visualisierung dieser Idee wurden Kommunikationsachsen aufgegriffen, die zur typografischen Ausrichtung genutzt werden. Sie bieten die M{\"o}glichkeit, in verschiedene Richtungen zu kommunizieren und Inhalte vielseitig und pr{\"a}gnant zu visualisieren. Die Wortmarke des Ludwig Forums dient dabei als klammerndes Element, welches den Rahmen f{\"u}r die Gestaltung erm{\"o}glichen. Mit der Fokussierung auf den Forumsgedanken setzt sich das Ludwig Forum sowohl inhaltlich als nun auch gestalterisch von anderen Museumseinrichtungen ab.}, language = {de} } @misc{Heining2022, type = {Master Thesis}, author = {Heining, Theresa Marie}, title = {Das Museum K{\"u}ppersm{\"u}hle : Entwicklung eines neuen Erscheinungsbildes und Orientierungssystems f{\"u}r das Museum}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {215 Seiten}, year = {2022}, abstract = {Der Raum des Museums ist kein funktionaler Ort. Er dient den Besucher:innen als Inspiration, gef{\"u}llt mit Kunst, Poesie und Konzept. Das Museum K{\"u}ppersm{\"u}hle ist dabei eine klassische White Cube Gallery mit weitl{\"a}ufigen R{\"a}umen, viel Platz f{\"u}r die Kunst und einer hochwertigen Sammlung. Es befindet sich in einem umgebauten, alten Speichergeb{\"a}ude im Duisburger Innenhafen. Im Zuge der Masterarbeit wurden ein Erscheinungsbild und Orientierungssystem f{\"u}r das Museums entwickelt. Das Gestaltungssystem ist ein Spiel von Verbindungen, die mal gradlinig, teilweise geschwungen und manchmal verdreht sind. Der geschwungene Pfeil wird hierbei zum Visual des Umwegs, des Gedankensprungs und des Entdeckens. Es ist ein Informationskonzept entstanden, das dazu einl{\"a}dt, {\"u}ber die gef{\"u}hrten Wege hinauszublicken. Es leitet digital und mittels verschiedener Printmedien durch die Ausstellung f{\"u}r moderne Kunst.}, language = {de} } @masterthesis{Krebs2022, type = {Bachelor Thesis}, author = {Krebs, Benedikt}, title = {Das Online-Ich : Erlebnis-Installation zur Reflexion {\"u}ber das digitale Selbst}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {38 Seiten}, year = {2022}, abstract = {Soziale Netzwerke geh{\"o}ren zu den gr{\"o}ßten Konzernen der Welt. Hier werden min{\"u}tlich Millionen von Nachrichten verschickt. Das Internet spielt eine stetig wachsende Rolle in der zwischenmenschlichen Kommunikation. Und doch funktioniert dort nicht nur die Sprache anders, auch die Pers{\"o}nlichkeit der Menschen kann sich auch ver{\"a}ndern. Diese Arbeit besch{\"a}ftigt sich mit dem „Online-Ich", das jeder in sich tragen soll. H{\"a}ufig ist dieses offener, hilfsbereiter und selbstloser, aber eben auch reizbarer, aggressiver und energetischer. Um auf diese Ver{\"a}nderung aufmerksam zu machen, werden die analoge und digitale Pers{\"o}nlichkeit verglichen. Dazu sch{\"o}pft die Arbeit aus den vielf{\"a}ltigen M{\"o}glichkeiten von Virtual Reality, um Betrachtende in die Arbeit miteinzubeziehen.}, language = {de} } @article{Fabo2022, author = {Fabo, Sabine}, title = {Das Parasit{\"a}re in der Pandemie}, series = {Parasite Art}, journal = {Parasite Art}, number = {Issue 2}, editor = {Wirth, Jacob}, publisher = {Parasite Art}, pages = {8 -- 11}, year = {2022}, 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} } @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{DefosseKleinschmidtSchmutzetal.2022, author = {Defosse, Jerome and Kleinschmidt, Joris and Schmutz, Axel and Loop, Torsten and Staat, Manfred and Gatzweiler, Karl-Heinz and Wappler, Frank and Schieren, Mark}, title = {Dental strain on maxillary incisors during tracheal intubation with double-lumen tubes and different laryngoscopy techniques - a blinded manikin study}, series = {Journal of Cardiothoracic and Vascular Anesthesia}, volume = {36}, journal = {Journal of Cardiothoracic and Vascular Anesthesia}, number = {8, Part B}, publisher = {Elsevier}, address = {New York, NY}, issn = {1053-0770}, doi = {10.1053/j.jvca.2022.02.017}, pages = {3021 -- 3027}, year = {2022}, language = {en} } @inproceedings{OstkottePetersHueningetal.2022, author = {Ostkotte, Sebastian and Peters, Constantin and H{\"u}ning, Felix and Bragard, Michael}, title = {Design, implementation and verification of an rotational incremental position encoder based on the magnetic Wiegand effect}, series = {2022 ELEKTRO (ELEKTRO)}, booktitle = {2022 ELEKTRO (ELEKTRO)}, publisher = {IEEE}, isbn = {978-1-6654-6726-1}, issn = {2691-0616}, doi = {10.1109/ELEKTRO53996.2022.9803477}, pages = {6 Seiten}, year = {2022}, abstract = {This paper covers the use of the magnetic Wiegand effect to design an innovative incremental encoder. First, a theoretical design is given, followed by an estimation of the achievable accuracy and an optimization in open-loop operation. Finally, a successful experimental verification is presented. For this purpose, a permanent magnet synchronous machine is controlled in a field-oriented manner, using the angle information of the prototype.}, language = {en} } @article{WeldenSeverinsPoghossianetal.2022, author = {Welden, Melanie and Severins, Robin and Poghossian, Arshak and Wege, Christina and Bongaerts, Johannes and Siegert, Petra and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Detection of acetoin and diacetyl by a tobacco mosaic virus-assisted field-effect biosensor}, series = {Chemosensors}, volume = {10}, journal = {Chemosensors}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {2227-9040}, doi = {10.3390/chemosensors10060218}, pages = {Artikel 218}, year = {2022}, abstract = {Acetoin and diacetyl have a major impact on the flavor of alcoholic beverages such as wine or beer. Therefore, their measurement is important during the fermentation process. Until now, gas chromatographic techniques have typically been applied; however, these require expensive laboratory equipment and trained staff, and do not allow for online monitoring. In this work, a capacitive electrolyte-insulator-semiconductor sensor modified with tobacco mosaic virus (TMV) particles as enzyme nanocarriers for the detection of acetoin and diacetyl is presented. The enzyme acetoin reductase from Alkalihalobacillus clausii DSM 8716ᵀ is immobilized via biotin-streptavidin affinity, binding to the surface of the TMV particles. The TMV-assisted biosensor is electrochemically characterized by means of leakage-current, capacitance-voltage, and constant capacitance measurements. In this paper, the novel biosensor is studied regarding its sensitivity and long-term stability in buffer solution. Moreover, the TMV-assisted capacitive field-effect sensor is applied for the detection of diacetyl for the first time. The measurement of acetoin and diacetyl with the same sensor setup is demonstrated. Finally, the successive detection of acetoin and diacetyl in buffer and in diluted beer is studied by tuning the sensitivity of the biosensor using the pH value of the measurement solution.}, language = {en} } @inproceedings{CaminosSchmitzAttietal.2022, author = {Caminos, Ricardo Alexander Chico and Schmitz, Pascal and Atti, Vikrama and Mahdi, Zahra and Teixeira Boura, Cristiano Jos{\´e} and Sattler, Johannes Christoph and Herrmann, Ulf and Hilger, Patrick and Dieckmann, Simon}, title = {Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086262}, pages = {8 Seiten}, year = {2022}, abstract = {The Solar-Institut J{\"u}lich (SIJ) and the companies Hilger GmbH and Heliokon GmbH from Germany have developed a small-scale cost-effective heliostat, called "micro heliostat". Micro heliostats can be deployed in small-scale concentrated solar power (CSP) plants to concentrate the sun's radiation for electricity generation, space or domestic water heating or industrial process heat. In contrast to conventional heliostats, the special feature of a micro heliostat is that it consists of dozens of parallel-moving, interconnected, rotatable mirror facets. The mirror facets array is fixed inside a box-shaped module and is protected from weathering and wind forces by a transparent glass cover. The choice of the building materials for the box, tracking mechanism and mirrors is largely dependent on the selected production process and the intended application of the micro heliostat. Special attention was paid to the material of the tracking mechanism as this has a direct influence on the accuracy of the micro heliostat. The choice of materials for the mirror support structure and the tracking mechanism is made in favor of plastic molded parts. A qualification assessment method has been developed by the SIJ in which a 3D laser scanner is used in combination with a coordinate measuring machine (CMM). For the validation of this assessment method, a single mirror facet was scanned and the slope deviation was computed.}, language = {en} } @inproceedings{SattlerSchneiderAngeleetal.2022, author = {Sattler, Johannes Christoph and Schneider, Iesse Peer and Angele, Florian and Atti, Vikrama and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Development of heliostat field calibration methods: Theory and experimental test results}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {Vol. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.678}, pages = {9 Seiten}, year = {2022}, abstract = {In this work, three patent pending calibration methods for heliostat fields of central receiver systems (CRS) developed by the Solar-Institut J{\"u}lich (SIJ) of the FH Aachen University of Applied Sciences are presented. The calibration methods can either operate in a combined mode or in stand-alone mode. The first calibration method, method A, foresees that a camera matrix is placed into the receiver plane where it is subjected to concentrated solar irradiance during a measurement process. The second calibration method, method B, uses an unmanned aerial vehicle (UAV) such as a quadrocopter to automatically fly into the reflected solar irradiance cross-section of one or more heliostats (two variants of method B were tested). The third calibration method, method C, foresees a stereo central camera or multiple stereo cameras installed e.g. on the solar tower whereby the orientations of the heliostats are calculated from the location detection of spherical red markers attached to the heliostats. The most accurate method is method A which has a mean accuracy of 0.17 mrad. The mean accuracy of method B variant 1 is 1.36 mrad and of variant 2 is 1.73 mrad. Method C has a mean accuracy of 15.07 mrad. For method B there is great potential regarding improving the measurement accuracy. For method C the collected data was not sufficient for determining whether or not there is potential for improving the accuracy.}, language = {en} } @inproceedings{TamaldinMansorMatYaminetal.2022, author = {Tamaldin, Noreffendy and Mansor, Muhd Rizuan and Mat Yamin, Ahmad Kamal and Bin Abdollah, Mohd Fazli and Esch, Thomas and Tonoli, Andrea and Reisinger, Karl Heinz and Sprenger, Hanna and Razuli, Hisham}, title = {Development of UTeM United Future Fuel Design Training Center Under Erasmus+ United Program}, series = {Proceedings of the 7th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2021), Melaka, Malaysia}, booktitle = {Proceedings of the 7th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2021), Melaka, Malaysia}, editor = {Bin Abdollah, Mohd Fadzli and Amiruddin, Hilmi and Singh, Amrik Singh Phuman and Munir, Fudhail Abdul and Ibrahim, Asriana}, publisher = {Springer Nature}, address = {Singapore}, isbn = {978-981-19-3178-9}, issn = {2195-4356}, doi = {10.1007/978-981-19-3179-6_50}, pages = {274 -- 278}, year = {2022}, abstract = {The industrial revolution IR4.0 era have driven many states of the art technologies to be introduced especially in the automotive industry. The rapid development of automotive industries in Europe have created wide industry gap between European Union (EU) and developing countries such as in South-East Asia (SEA). Indulging this situation, FH Joanneum, Austria together with European partners from FH Aachen, Germany and Politecnico Di Torino, Italy is taking initiative to close the gap utilizing the Erasmus+ United grant from EU. A consortium was founded to engage with automotive technology transfer using the European ramework to Malaysian, Indonesian and Thailand Higher Education Institutions (HEI) as well as automotive industries. This could be achieved by establishing Engineering Knowledge Transfer Unit (EKTU) in respective SEA institutions guided by the industry partners in their respective countries. This EKTU could offer updated, innovative, and high-quality training courses to increase graduate's employability in higher education institutions and strengthen relations between HEI and the wider economic and social environment by addressing Universityindustry cooperation which is the regional priority for Asia. It is expected that, the Capacity Building Initiative would improve the quality of higher education and enhancing its relevance for the labor market and society in the SEA partners. The outcome of this project would greatly benefit the partners in strong and complementary partnership targeting the automotive industry and enhanced larger scale international cooperation between the European and SEA partners. It would also prepare the SEA HEI in sustainable partnership with Automotive industry in the region as a mean of income generation in the future.}, language = {en} } @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} } @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{Leontieva2022, type = {Master Thesis}, author = {Leontieva, Ksenia Andreevna}, title = {Die Facetten Hamburgs}, publisher = {FH Aachen}, address = {Aachen}, pages = {137 Seiten}, year = {2022}, abstract = {Im Rahmen dieser Masterarbeit entsteht ein neues Erscheinungsbild f{\"u}r die "Stiftung Historische Museen Hamburg". Dabei wurde ein medien{\"u}bergreifendes Gestaltungskonzept entwickelt, welches dazu dienen soll, die Stiftung und deren musealen Einrichtungen modern, aussagekr{\"a}ftig und repr{\"a}sentativ neu aufleben zu lassen, als auch das Interesse unserer Gesellschaft f{\"u}r Kunst, Kultur und Geschichte zu wecken und damit die Zielgruppe zu erweitern. Hierzu wurde das Corporate Design neu entwickelt, minimalisiert und modernisiert. Durch den aufger{\"a}umten und organisierten digitalen Auftritt gelangen Interessenten schneller und gezielter zu Informationen {\"u}ber die Stiftung, die einzelnen Museen und deren Programm und Ausstellungen. Zus{\"a}tzlich dienen als weiterf{\"u}hrende Informationsquellen neu getslatete analoge Medien in Form von Plakaten, Flyern, Brosch{\"u}ren und Eintrittskarten. Weitestgehend wurde das Corporate Design in den urbanen Lebensraum der Stadt Hamburg integriert und neu interpretiert. Aus dem Gestaltungskonzept l{\"a}sst sich ebenfalls ein neues Leitsystem zur besseren Orientierung in den Museen ableiten. Das Designkonzept zieht sich wie ein roter Faden durch alle Medien, um eine Einheit und einen Wiedererkennungswert zu schaffen und seri{\"o}s und informativ zu wirken. Das Projekt ist rein fiktiv.}, 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{Ebert2022, type = {Bachelor Thesis}, author = {Ebert, Julia}, title = {Die unsichtbare Gefahr : Mikroplastik}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {23 Seiten}, year = {2022}, abstract = {Bereits ein einziger pr{\"u}fender Blick in einen klassischen Privathaushalt vermittelt einen ersten Eindruck davon, wie allgegenw{\"a}rtig Kunststoff im menschlichen Leben ist. H{\"a}ufig {\"u}bersehen wird dabei Mikroplastik, welches im Verh{\"a}ltnis zu seinen gravierenden Auswirkungen auf Mensch und Umwelt in der {\"o}ffentlichen Diskussion bislang noch wenig Beachtung findet. Das f{\"u}hrt dazu, dass die Problematik durch unaufgekl{\"a}rten Konsum weiter angefacht wird. Die Gestaltung des visuellen Magazins m{\"o}chte {\"u}ber die Konsequenzen von Mikroplastik aufkl{\"a}ren und das Bewusstsein {\"u}ber das pers{\"o}nliche Konsumverhalten sch{\"a}rfen. Mithilfe kurzer Infotexte wird die Problematik aus der wissenschaftlichen Perspektive der Umweltorganisationen beleuchtet und durch ausgew{\"a}hlte Mikroskop-Aufnahmen illustriert. Hiermit werden unsichtbare Krisentreiber endlich sichtbar gemacht.}, language = {de} } @inproceedings{UlmerMostafaWollert2022, author = {Ulmer, Jessica and Mostafa, Youssef and Wollert, J{\"o}rg}, title = {Digital Twin Academy: From Zero to Hero through individual learning experiences}, series = {Tagungsband AALE 2022 / Herausgegeben von der Hochschule f{\"u}r Technik, Wirtschaft und Kultur Leipzig}, booktitle = {Tagungsband AALE 2022 / Herausgegeben von der Hochschule f{\"u}r Technik, Wirtschaft und Kultur Leipzig}, isbn = {978-3-910103-00-9}, doi = {10.33968/2022.33}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:l189-qucosa2-776097}, pages = {1 -- 9}, year = {2022}, abstract = {Digital twins are seen as one of the key technologies of Industry 4.0. Although many research groups focus on digital twins and create meaningful outputs, the technology has not yet reached a broad application in the industry. The main reasons for this imbalance are the complexity of the topic, the lack of specialists, and the unawareness of the twin opportunities. The project "Digital Twin Academy" aims to overcome these barriers by focusing on three actions: Building a digital twin community for discussion and exchange, offering multi-stage training for various knowledge levels, and implementing realworld use cases for deeper insights and guidance. In this work, we focus on creating a flexible learning platform that allows the user to select a training path adjusted to personal knowledge and needs. Therefore, a mix of basic and advanced modules is created and expanded by individual feedback options. The usage of personas supports the selection of the appropriate modules.}, 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} } @misc{OPUS4-10302, title = {Dimensionen 1-2022: Magazin der FH Aachen University of Applied Sciences - Auf dem Weg zur Nachhaltigkeit}, address = {Aachen}, organization = {Fachhochschule Aachen}, pages = {62 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis: 06| "WIR" werden nachhaltig 10| Der Kraft-Stoff aus dem Bioreaktor 14| Energieverbrauch des Campus J{\"u}lich optimieren 16| „Eine große Hilfestellung f{\"u}r Flutopfer" 20| Von der ersten Skizze zu den Blumen in der Vase 22|Wie schl{\"a}ft es sich im All, Herr Maurer? 24| Expedition Arktis 28| Eine Frage, zwei Antworten 30| Der sch{\"o}nste Arbeitsplatz der Welt 32| Im Einklang 36| Ein Vorgeschmack auf die echte Arbeitswelt 38| Den R{\"a}tseln des Universums auf der Spur 40| Auf Umwegen in die Spitzenforschung 42| Klappe FH Aachen, die erste … Kamera l{\"a}uft! 44| Auszeit 46| „Fotografie {\"o}ffnet T{\"u}ren zu Parallelwelten" 50| Es gibt viel zu tun 52| Durch-Blick 54| Weichen stellen f{\"u}r einen ganz besonderen Job 58| Souta, Iver und der Wind 60| Die FH Aachen ist systemakkreditiert 61| Der Vulkan 62| Kopfnuss, Impressum}, language = {de} } @misc{OPUS4-10711, title = {Dimensionen 2-2022: Magazin der FH Aachen University of Applied Sciences - Werkstatt Zukunft}, address = {Aachen}, organization = {Fachhochschule Aachen}, pages = {63 Seiten}, year = {2022}, abstract = {Werkstatt Zukunft - Die FH Aachen versteht sich als interdisziplin{\"a}re Ideenschmiede 04| Aufbruch ins Ungewisse 08| Mit Altpapierresten aus der Energiekrise 14| Mehr Power f{\"u}r die Energiewende 20| Pfadfinder im Datendschungel 23| Ein historischer Schritt 24| Gemeinsam vorw{\"a}rts 30| F{\"u}r eine gerechte Hochschule. F{\"u}r alle. 32| Der gr{\"u}ne Reiter 34| Vom Flugsimulator bis zum Roboter 36| Unsere Azubis sind top! 38| WIR sind ein Sportteam! 40| Effizient und sicher: Der Bergbau der Zukunft 46| Mit Sonnenlicht zu sauberem Trinkwasser 48| Neue Brandmeldeanlage f{\"u}r den Dom zu Aachen 50| Auszeichnung f{\"u}r außergew{\"o}hnliches Engagement 52| Neue Ideen f{\"u}r Schloss Lichtenburg 55| Kopfnuss 56| One-Man-Show 60| K{\"a}mpferin f{\"u}r das Sch{\"o}ne 61| Ein charmanter Diplomat 62| Teamplay f{\"u}r die Zukunft 63| Impressum}, language = {de} } @article{SchuellerRuhlDinstuehlerSengeretal.2022, author = {Sch{\"u}ller-Ruhl, Aaron and Dinst{\"u}hler, Leonard and Senger, Thorsten and Bergfeld, Stefan and Ingenhag, Christian and Fleischhaker, Robert}, title = {Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications}, series = {Applied Physics B}, volume = {128}, journal = {Applied Physics B}, number = {Article number: 208}, editor = {Mackenzie, Jacob}, publisher = {Springer}, address = {Berlin}, issn = {1432-0649 (Online)}, doi = {10.1007/s00340-022-07928-2}, pages = {1 -- 11}, year = {2022}, abstract = {We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg-Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10-3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.}, language = {en} } @inproceedings{SattlerAttiAlexopoulosetal.2022, author = {Sattler, Johannes Christoph and Atti, Vikrama and Alexopoulos, Spiros and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf and Dutta, Siddharth and Kioutsioukis, Ioannis}, title = {DNI forecast tool for the smart operation of a parabolic trough collector system with concrete thermal energy storage: Theory, results and outlook}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {VOL. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.731}, pages = {9 Seiten}, year = {2022}, abstract = {This work presents a basic forecast tool for predicting direct normal irradiance (DNI) in hourly resolution, which the Solar-Institut J{\"u}lich (SIJ) is developing within a research project. The DNI forecast data shall be used for a parabolic trough collector (PTC) system with a concrete thermal energy storage (C-TES) located at the company KEAN Soft Drinks Ltd in Limassol, Cyprus. On a daily basis, 24-hour DNI prediction data in hourly resolution shall be automatically produced using free or very low-cost weather forecast data as input. The purpose of the DNI forecast tool is to automatically transfer the DNI forecast data on a daily basis to a main control unit (MCU). The MCU automatically makes a smart decision on the operation mode of the PTC system such as steam production mode and/or C-TES charging mode. The DNI forecast tool was evaluated using historical data of measured DNI from an on-site weather station, which was compared to the DNI forecast data. The DNI forecast tool was tested using data from 56 days between January and March 2022, which included days with a strong variation in DNI due to cloud passages. For the evaluation of the DNI forecast reliability, three categories were created and the forecast data was sorted accordingly. The result was that the DNI forecast tool has a reliability of 71.4 \% based on the tested days. The result fulfils SIJ's aim to achieve a reliability of around 70 \%, but SIJ aims to still improve the DNI forecast quality.}, 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} } @article{ThiebesKleinZingsheimetal.2022, author = {Thiebes, Anja Lena and Klein, Sarah and Zingsheim, Jonas and M{\"o}ller, Georg H. and G{\"u}rzing, Stefanie and Reddemann, Manuel A. and Behbahani, Mehdi and Cornelissen, Christian G.}, title = {Effervescent atomizer as novel cell spray technology to decrease the gas-to-liquid ratio}, series = {pharmaceutics}, volume = {14}, journal = {pharmaceutics}, number = {11}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/pharmaceutics14112421}, pages = {Artikel 2421}, year = {2022}, abstract = {Cell spraying has become a feasible application method for cell therapy and tissue engineering approaches. Different devices have been used with varying success. Often, twin-fluid atomizers are used, which require a high gas velocity for optimal aerosolization characteristics. To decrease the amount and velocity of required air, a custom-made atomizer was designed based on the effervescent principle. Different designs were evaluated regarding spray characteristics and their influence on human adipose-derived mesenchymal stromal cells. The arithmetic mean diameters of the droplets were 15.4-33.5 µm with decreasing diameters for increasing gas-to-liquid ratios. The survival rate was >90\% of the control for the lowest gas-to-liquid ratio. For higher ratios, cell survival decreased to approximately 50\%. Further experiments were performed with the design, which had shown the highest survival rates. After seven days, no significant differences in metabolic activity were observed. The apoptosis rates were not influenced by aerosolization, while high gas-to-liquid ratios caused increased necrosis levels. Tri-lineage differentiation potential into adipocytes, chondrocytes, and osteoblasts was not negatively influenced by aerosolization. Thus, the effervescent aerosolization principle was proven suitable for cell applications requiring reduced amounts of supplied air. This is the first time an effervescent atomizer was used for cell processing.}, language = {en} } @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} } @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{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} } @masterthesis{KoenenPohlen2022, type = {Bachelor Thesis}, author = {Koenen, Rachel and Pohlen, Britta}, title = {Energie zur Teilhabe : Etablierung einer Plattform zum Ausbau der Energiewende f{\"u}r st{\"a}dtische Mieter}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {175 Seiten}, year = {2022}, abstract = {Die gelungene Energiewende ist essenziell auf dem Weg zur geplanten Klimaneutralit{\"a}t bis 2045. M{\"o}glichkeiten f{\"u}r Immobilienbesitzer:innen, sich am Ausbau erneuerbarer Energien zu beteiligen, sind {\"u}berwiegend bekannt. Mieter:innen im urbanen Raum werden jedoch nicht ad{\"a}quat dar{\"u}ber aufgekl{\"a}rt, wie auch sie teilhaben k{\"o}nnen. Die Online-Plattform „energiewende-teilhaben.de"" zentriert Wissen und schl{\"a}gt konkrete personalisierte Maßnahmen zur Partizipation vor. Eine Werbekampagne etabliert die Plattform im st{\"a}dtischen Raum und zeigt bereits motivierten Mieter:innen einfache M{\"o}glichkeiten zur Beteiligung auf. Durch eine hohe Sichtbarkeit der wachsenden Community werden noch Unbeteiligte angesteckt und die Wende in der Stadt ausgel{\"o}st. Die Kampagne lenkt die Motivationsenergie der Bev{\"o}lkerung {\"u}ber die Plattform auf Teilhabe und Klimaschutz.}, 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} } @masterthesis{NiggeMans2022, type = {Bachelor Thesis}, author = {Nigge-Mans, Leonard}, title = {Entwicklung einer Arbeitsplatzleuchte}, publisher = {FH Aachen}, address = {Aachen}, pages = {74 Seiten}, year = {2022}, abstract = {F{\"u}r manche mag es banal wirken, doch f{\"u}r Gestalter:innen ist sie unverzichtbar: eine wirklich gute Leuchte f{\"u}r den Arbeitsplatz. Sie hat n{\"a}mlich einen enormen Einfluss auf die Konzentration und den Komfort. Zudem erm{\"o}glicht gutes Licht erst ein sauberes und farbechtes Ergebnis. Daf{\"u}r wurde in diesem Projekt die perfekte Leuchte entwickelt. Sie leuchtet die Arbeitsfl{\"a}che ideal aus und unterst{\"u}tzt das Lesen, Schreiben oder die Arbeit mit technischen Ger{\"a}ten. Durch f{\"u}nf Drehpunkte ist die Leuchte in alle Richtungen zu bewegen und l{\"a}sst sich somit individuell auf ihre Aufgaben anpassen. Außerdem wurde Wert daraufgelegt, bestehende Normen und Vorschiften einzuhalten, um den Arbeit- und Gesundheitsschutz zu gew{\"a}hrleisten. Feierabend? Durch die Dim-Funktion wird die Arbeitsleuchte zu einer gem{\"u}tlichen Lichtquelle. Unter anderem durch die unsichtbare Stromf{\"u}hrung {\"u}berzeugt die Lampe mit ihrer minimalistischen Designsprache und l{\"a}sst sich in unterschiedlichste R{\"a}ume integrieren.}, 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} } @misc{Boehler2022, type = {Master Thesis}, author = {B{\"o}hler, Jennifer}, title = {Environmental injustice : how environmental inequality impacts low socio-economic communities.}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {255 Seiten}, year = {2022}, abstract = {Das Projekt besch{\"a}ftigt sich mit der Informationsvermittlung zu dem Thema "Environmental Injustice" in Form einer Website. "Environmental Injustice" beschreibt die systematische unfaire Behandlung von verschiedenen Communities durch L{\"a}nder/Regierungen, Firmen und unabh{\"a}ngige Akteure. In dem Bereich werden weitestgehend Sch{\"a}den im Zusammenhang mit Ressourcen, dessen Abbau, gef{\"a}hrlichen Abf{\"a}llen und Chancenungleichheit beschrieben. Das Projekt ist generell eine Sammlung, die als Anlaufstelle zur Weiterbildung in dem Thema dienen soll. Dies geschieht durch gestalterische Aufarbeitung, Illustration und Kategorisierung.}, language = {de} } @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} } @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} }