@article{HarrisKleefeld2022,
  author    = {Harris, Isaac and Kleefeld, Andreas},
  title     = {Analysis and computation of the transmission eigenvalues with a conductive boundary condition},
  series = {Applicable Analysis},
  volume    = {101},
  journal   = {Applicable Analysis},
  number    = {6},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1563-504X},
  doi       = {10.1080/00036811.2020.1789598},
  pages     = {1880 -- 1895},
  year      = {2022},
  abstract  = {We provide a new analytical and computational study of the transmission eigenvalues with a conductive boundary condition. These eigenvalues are derived from the scalar inverse scattering problem for an inhomogeneous material with a conductive boundary condition. The goal is to study how these eigenvalues depend on the material parameters in order to estimate the refractive index. The analytical questions we study are: deriving Faber-Krahn type lower bounds, the discreteness and limiting behavior of the transmission eigenvalues as the conductivity tends to infinity for a sign changing contrast. We also provide a numerical study of a new boundary integral equation for computing the eigenvalues. Lastly, using the limiting behavior we will numerically estimate the refractive index from the eigenvalues provided the conductivity is sufficiently large but unknown.},
  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 Chico Caminos, Ricardo Alexander 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{CrookstonBung2022,
  author    = {Crookston, Brian M. and Bung, Daniel Bernhard},
  title     = {Application of RGB-D cameras in hydraulic laboratory studies},
  series = {Proceedings of the 39th IAHR World Congress},
  booktitle = {Proceedings of the 39th IAHR World Congress},
  editor    = {Ortega-S{\´a}nchez, Miguel},
  publisher = {International Association for Hydro-Environment Engineering and Research (IAHR)},
  address   = {Madrid},
  isbn      = {978-90-832612-1-8},
  issn      = {2521-7119 (print)},
  doi       = {10.3850/IAHR-39WC252171192022964},
  pages     = {5127 -- 5133},
  year      = {2022},
  abstract  = {Non-intrusive measuring techniques have attained a lot of interest in relation to both hydraulic modeling and prototype applications. Complimenting acoustic techniques, significant progress has been made for the development of new optical methods. Computer vision techniques can help to extract new information, e. g. high-resolution velocity and depth data, from videos captured with relatively inexpensive, consumer-grade cameras. Depth cameras are sensors providing information on the distance between the camera and observed features. Currently, sensors with different working principles are available. Stereoscopic systems reference physical image features (passive system) from two perspectives; in order to enhance the number of features and improve the results, a sensor may also estimate the disparity from a detected light to its original projection (active stereo system). In the current study, the RGB-D camera Intel RealSense D435, working on such stereo vision principle, is used in different, typical hydraulic modeling applications. All tests have been conducted at the Utah Water Research Laboratory. This paper will demonstrate the performance and limitations of the RGB-D sensor, installed as a single camera and as camera arrays, applied to 1) detect the free surface for highly turbulent, aerated hydraulic jumps, for free-falling jets and for an energy dissipation basin downstream of a labyrinth weir and 2) to monitor local scours upstream and downstream of a Piano Key Weir. It is intended to share the authors' experiences with respect to camera settings, calibration, lightning conditions and other requirements in order to promote this useful, easily accessible device. Results will be compared to data from classical instrumentation and the literature. It will be shown that even in difficult application, e. g. the detection of a highly turbulent, fluctuating free-surface, the RGB-D sensor may yield similar accuracy as classical, intrusive probes.},
  language  = {en}
}
@inproceedings{EggertDyong2022,
  author    = {Eggert, Mathias and Dyong, Julian},
  title     = {Applying process mining in small and medium sized IT enterprises - challenges and guidelines},
  series = {Business Process Management, 20th International Conference, BPM 2022, Proceedings},
  booktitle = {Business Process Management, 20th International Conference, BPM 2022, Proceedings},
  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}
}
@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}
}