@article{29505,
  abstract     = {{In modern vehicle chassis, multi-material design is implemented to apply the appropriate material for each functionality. In spaceframe technology, both sheet metal and continuous cast are joined to castings at the nodal points of the chassis. Since resistance spot welding is not an option when different materials are joined, research is focusing on mechanical joining methods for multi-material designs. To reduce weight and achieve the required strength, hardenable cast aluminium alloys of the AlSi-system are widely used. Thus, 85–90% of aluminium castings in the automotive industry are comprised of the AlSi-system. Due to the limited weldability, mechanical joining is a suitable process. For this application, various optimisation strategies are required to produce a crack-free joint, as the brittle character of the AlSi alloy poses a challenge. Thus, adapted castings with appropriate ductility are needed. Hence, in this study, the age-hardenable cast aluminium alloy AlSi10Mg is investigated regarding the correlation of the different thicknesses, the microstructural characteristics as well as the resulting mechanical properties. A variation of the thicknesses leads to different solidification rates, which in turn affect the microstructure formation and are decisive for the mechanical properties of the casting as well as the joinability. For the investigation, plates with thicknesses from 2.0 to 4.0 mm, each differing by 0.5 mm, are produced via sand casting. Hence, the overall aim is to evaluate the joinability of AlSi10Mg and derive conclusions concerning the microstructure and mechanical properties.</jats:p>}},
  author       = {{Neuser, Moritz and Grydin, Olexandr and Frolov, Y. and Schaper, Mirko}},
  issn         = {{0944-6524}},
  journal      = {{Production Engineering}},
  keywords     = {{Industrial and Manufacturing Engineering, Mechanical Engineering}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Influence of solidification rates and heat treatment on the mechanical performance and joinability of the cast aluminium alloy AlSi10Mg}}},
  doi          = {{10.1007/s11740-022-01106-1}},
  year         = {{2022}},
}

@phdthesis{52669,
  author       = {{Javed, A. R.}},
  isbn         = {{978-3-947647-26-2}},
  title        = {{{Mixed-Signal Baseband Circuit Design for High Data Rate Wireless Communication in Bulk CMOS and SiGe BiCMOS Technologies}}},
  volume       = {{Band 407}},
  year         = {{2022}},
}

@phdthesis{52668,
  author       = {{Fechtelpeter, Christian}},
  isbn         = {{978-3-947647-24-8}},
  title        = {{{Rahmenwerk zur Gestaltung des Technologietransfers in mittelständisch geprägten Innovationsclustern}}},
  volume       = {{Band 405}},
  year         = {{2022}},
}

@article{54849,
  abstract     = {{<jats:sec><jats:label /><jats:p>The third‐order susceptibility  of lithium niobate (LiNbO<jats:sub>3</jats:sub>) is calculated within a Berry‐phase formulation of the dynamical polarization based on the electronic structure obtained within density‐functional theory (DFT). Maximum  values of the order of  m V are calculated for photon energies between 1.2 and 2 eV, i.e., in the lower half of the optical bandgap of lithium niobate. Both free and bound electron (bi)polarons are found to lead to a remarkable enhancement of the third‐order susceptibility for photon energies below 1 eV.</jats:p></jats:sec>}},
  author       = {{Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt, Wolf Gero}},
  issn         = {{0370-1972}},
  journal      = {{physica status solidi (b)}},
  number       = {{2}},
  publisher    = {{Wiley}},
  title        = {{{Third‐Order Susceptibility of Lithium Niobate: Influence of Polarons and Bipolarons}}},
  doi          = {{10.1002/pssb.202200453}},
  volume       = {{260}},
  year         = {{2022}},
}

@phdthesis{34174,
  abstract     = {{Anforderungsänderungen sind ein wesentlicher Grund für Ineffizienzen und Projektfehlschläge in der Entwicklung komplexer technischer Systeme. Proaktives Management von Anforderungsänderungen hat das Potenzial, den Umgang mit Anforderungsänderungen effizienter zu gestalten. Dafür ist ein systematischer Ansatz erforderlich, der eine ganzheitliche Bewertung und Handhabung des Änderungsrisikos im industriellen Entwicklungskontext ermöglicht. Im Rahmen dieser Dissertation wird mit der ProMaRC-Methodik ein neuartiger Ansatz für das proaktive Management von Anforderungsänderungen vorgestellt. Die Methodik wurde in enger Zusammenarbeit mit Industrieanwender:innen aus der Automobilindustrie entwickelt und anhand von fünf Fallstudien validiert. Mittels automatisierter Abhängigkeitsanalyse auf Grundlage künstlicher Intelligenz wird der Anwendungsaufwand gegenüber bestehenden Ansätzen reduziert. Die teilautomatisierte Bewertung und Handhabung der Änderungswahrscheinlichkeit und -auswirkung erfolgt anhand eines modifizierten PageRank-Algorithmus und umfasst erstmalig alle für die Risikoanalyse relevanten Einflussfaktoren. Die Validierung belegt, dass durch die ProMaRC-Methodik eine überzeugende Kombination aus praxistauglichem Anwendungsaufwand und Vollständigkeit der Analyse erzielt wird. Damit erschließt diese Dissertation das bisher kaum beachtete Forschungsfeld des proaktiven Managements von Anforderungsänderungen und fördert eine effizientere Produktentwicklung.}},
  author       = {{Oleff, Christian}},
  publisher    = {{LibreCat University}},
  title        = {{{Proaktives Management von Anforderungsänderungen in der Entwicklung komplexer technischer Systeme}}},
  doi          = {{10.17619/UNIPB/1-1600}},
  volume       = {{406}},
  year         = {{2022}},
}

@phdthesis{40518,
  abstract     = {{In dieser Arbeit wird die Entwicklung einer dezentralen Produktionssteuerung mit digitaler Repräsentation zur Anwendung in cyber-physischen Produktionssystemen (CPPS) beschrieben. Die dezentrale Produktionssteuerung geschieht hierbei selbstorganisiert, da sie die Einlastung und Umplanung von Aufträgen sowie die Koordination zwischen den einzelnen Produktionselementen selbstständig übernimmt. Dies erlaubt die automatisierte Steuerung von CPPS. Dabei spielen die Beschäftigten in dieser Betrachtung eine wesentliche Rolle. Ihre Bedürfnisse und Wünsche werden von dem Steuerungssystem berücksichtigt. Dafür wurde das Konzept der digitalen Repräsentation von Beschäftigten entwickelt. Diese Repräsentation erlaubt den individuellen Eingriff von Beschäftigten bei Entscheidungen von dem Steuerungssystem. Das automatisierte dezentrale Steuerungssystem wurde in einer Laborumgebung, die zu einem CPPS umgebaut wurde, implementiert. Darauf basierend wurde eine zweistufige Validierung durchgeführt. Ein Teil der Validierung findet durch eine reale Umsetzung in einem Labor statt, bei der ein Vergleich zu dem vorher im Labor eingesetzten zentralen Produktionssteuerungssystem gezogen wird. Die zweite Validierung erfolgt mit Hilfe einer Simulationsumgebung. Dabei konnte die Implementierung der Selbstorganisation und eine Steigerung der Liefertreue der dezentralen Produktionssteuerung gegenüber heutzutage üblicherweise eingesetzten Verfahren nachgewiesen werden.}},
  author       = {{Pöhler, Alexander}},
  publisher    = {{LibreCat University}},
  title        = {{{Automatisierte dezentrale Produktionssteuerung für cyber-physische Produktionssysteme mit digitaler Repräsentation der Beschäftigten}}},
  doi          = {{10.17619/UNIPB/1-1642}},
  year         = {{2022}},
}

@article{28413,
  abstract     = {{Optical traveling wave antennas offer unique opportunities to control and selectively guide light into a specific direction, which renders them excellent candidates for optical communication and sensing. These applications require state-of-the-art engineering to reach optimized functionalities such as high directivity and radiation efficiency, low sidelobe levels, broadband and tunable capabilities, and compact design. In this work, we report on the numerical optimization of the directivity of optical traveling wave antennas made from low-loss dielectric materials using full-wave numerical simulations in conjunction with the particle swarm optimization algorithm. The antennas are composed of a reflector and a director deposited on a glass substrate, and an emitter placed in the feed gap between them serves as an internal source of excitation. In particular, we analyze antennas with rectangular- and horn-shaped directors made of either hafnium dioxide or silicon. The optimized antennas produce highly directional emissions due to the presence of two dominant guided TE modes in the director in addition to leaky modes. These guided modes dominate the far-field emission pattern and govern the direction of the main lobe emission, which predominately originates from the end facet of the director. Our work also provides a comprehensive analysis of the modes, radiation patterns, parametric influences, and bandwidths of the antennas, which highlights their robust nature.}},
  author       = {{Farheen, Henna and Leuteritz, Till and Linden, Stefan and Myroshnychenko, Viktor and Förstner, Jens}},
  issn         = {{0740-3224}},
  journal      = {{Journal of the Optical Society of America B}},
  keywords     = {{tet_topic_opticalantenna}},
  number       = {{1}},
  pages        = {{83}},
  title        = {{{Optimization of optical waveguide antennas for directive emission of light}}},
  doi          = {{10.1364/josab.438514}},
  volume       = {{39}},
  year         = {{2022}},
}

@article{29075,
  abstract     = {{We study a double-scattering coherent mechanism of negative polarization (NP) near opposition that is observed for powder-like surfaces. The problem is solved numerically for absorbing structures with irregular constituents, cubes, spheres, and ellipsoids larger than the wavelength of incident light. Our simulations show that double scattering between two random irregular particles shows weak NP. Adding one more particle significantly increases the relative contribution of double scattering which enhances NP. Simulations with regular shapes and controlled geometric parameters show that the interference mechanism is sensitive to the geometry of the scattering system and can also result in no polarization or even strong enhancement of positive polarization at backscattering.}},
  author       = {{Alhaddad, Samer and Grynko, Yevgen and Farheen, Henna and Förstner, Jens}},
  issn         = {{0146-9592}},
  journal      = {{Optics Letters}},
  keywords     = {{tet_topic_scattering}},
  number       = {{1}},
  pages        = {{58}},
  title        = {{{Numerical analysis of the coherent mechanism producing negative polarization at backscattering from systems of absorbing particles}}},
  doi          = {{10.1364/ol.444953}},
  volume       = {{47}},
  year         = {{2022}},
}

@article{31329,
  abstract     = {{Highly directive antennas with the ability of shaping radiation patterns in desired directions are essential for efficient on-chip optical communication with reduced cross talk. In this paper, we design and optimize three distinct broadband traveling-wave tantalum pentoxide antennas exhibiting highly directional characteristics. Our antennas contain a director and reflector deposited on a glass substrate, which are excited by a dipole emitter placed in the feed gap between the two elements. Full-wave simulations in conjunction with global optimization provide structures with an enhanced linear directivity as high as 119 radiating in the substrate. The high directivity is a result of the interplay between two dominant TE modes and the leaky modes present in the antenna director. Furthermore, these low-loss dielectric antennas exhibit a near-unity radiation efficiency at the operational wavelength of 780 nm and maintain a broad bandwidth. Our numerical results are in good agreement with experimental measurements from the optimized antennas fabricated using a two-step electron-beam lithography, revealing the highly directive nature of our structures. We envision that our antenna designs can be conveniently adapted to other dielectric materials and prove instrumental for inter-chip optical communications and other on-chip applications.}},
  author       = {{Farheen, Henna and Yan, Lok-Yee and Quiring, Viktor and Eigner, Christof and Zentgraf, Thomas and Linden, Stefan and Förstner, Jens and Myroshnychenko, Viktor}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  keywords     = {{tet_topic_opticalantenna}},
  number       = {{11}},
  pages        = {{19288}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Broadband optical Ta2O5 antennas for directional emission of light}}},
  doi          = {{10.1364/oe.455815}},
  volume       = {{30}},
  year         = {{2022}},
}

@article{36804,
  author       = {{Henksmeier, Tobias and Schulz, Johann Friedemann and Kluth, Elias and Feneberg, Martin and Goldhahn, Rüdiger and Sanchez, Ana M. and Voigt, Markus and Grundmeier, Guido and Reuter, Dirk}},
  journal      = {{Journal of Crystal Growth}},
  publisher    = {{Elsevier}},
  title        = {{{Remote epitaxy of In(x)Ga(1-x)As(001) on graphene covered GaAs(001) substrates}}},
  doi          = {{10.1016/j.jcrysgro.2022.126756}},
  volume       = {{593}},
  year         = {{2022}},
}

@unpublished{36879,
  abstract     = {{The Julia programming language has evolved into a modern alternative to fill existing gaps in scientific computing and data science applications. Julia leverages a unified and coordinated single-language and ecosystem paradigm and has a proven track record of achieving high performance without sacrificing user productivity. These aspects make Julia a viable alternative to high-performance computing's (HPC's) existing and increasingly costly many-body workflow composition strategy in which traditional HPC languages (e.g., Fortran, C, C++) are used for simulations, and higher-level languages (e.g., Python, R, MATLAB) are used for data analysis and interactive computing. Julia's rapid growth in language capabilities, package ecosystem, and community make it a promising universal language for HPC. This paper presents the views of a multidisciplinary group of researchers from academia, government, and industry that advocate for an HPC software development paradigm that emphasizes developer productivity, workflow portability, and low barriers for entry. We believe that the Julia programming language, its ecosystem, and its community provide modern and powerful capabilities that enable this group's objectives. Crucially, we believe that Julia can provide a feasible and less costly approach to programming scientific applications and workflows that target HPC facilities. In this work, we examine the current practice and role of Julia as a common, end-to-end programming model to address major challenges in scientific reproducibility, data-driven AI/machine learning, co-design and workflows, scalability and performance portability in heterogeneous computing, network communication, data management, and community education. As a result, the diversification of current investments to fulfill the needs of the upcoming decade is crucial as more supercomputing centers prepare for the exascale era.}},
  author       = {{Churavy, Valentin and Godoy, William F and Bauer, Carsten and Ranocha, Hendrik and Schlottke-Lakemper, Michael and Räss, Ludovic and Blaschke, Johannes and Giordano, Mosè and Schnetter, Erik and Omlin, Samuel and Vetter, Jeffrey S and Edelman, Alan}},
  title        = {{{Bridging HPC Communities through the Julia Programming Language}}},
  year         = {{2022}},
}

@article{32103,
  author       = {{Hanses, Hendrik and Horwath, Ilona}},
  issn         = {{2214-7853}},
  journal      = {{Materials Today: Proceedings}},
  keywords     = {{General Medicine}},
  number       = {{5}},
  pages        = {{2684--2688}},
  publisher    = {{Elsevier BV}},
  title        = {{{Development of operational and demand-oriented firefighting equipment}}},
  doi          = {{10.1016/j.matpr.2022.06.031}},
  volume       = {{62}},
  year         = {{2022}},
}

@inproceedings{37258,
  author       = {{Haller, Sebastian and Tinkloh, Steffen Rainer and Tröster, Thomas and Brandt, Robert}},
  booktitle    = {{5th International Conference Hybrid 2022 Material & Structures}},
  title        = {{{The environmental impact on the strain rate dependent energy absorption capability of a hybrid crash absorber element}}},
  year         = {{2022}},
}

@inproceedings{32819,
  author       = {{Pfeifer, Florian and Tröster, Thomas and Marten, Thorsten and Dietrich, André and Nacke, Bernard and Grundmeier, Guido}},
  booktitle    = {{Proceedings of the 6th International Conference on Steels in Cars and Trucks}},
  location     = {{Mailand}},
  title        = {{{Investigation on hot sheet metal forming by means of a longitudinal flux inductor}}},
  year         = {{2022}},
}

@phdthesis{37635,
  author       = {{Dörner, Marius}},
  title        = {{{Wave-Schnecken in der Einschneckenextrusion}}},
  year         = {{2022}},
}

@phdthesis{37639,
  author       = {{Helmlinger, Lars René}},
  title        = {{{Untersuchungen zur werkstofflichen Aufbereitung von Post-Consumer-Kunststoffabfällen und Entwicklung eines neuen Aufbereitungsverfahrens}}},
  year         = {{2022}},
}

@phdthesis{37638,
  author       = {{Mühlhoff, Frederik Marvin}},
  title        = {{{Ein Beitrag zur InMould-Plasma Technologie zur Oberflächenvorbehandlung im Mehrkomponentenspritzgießwerkzeug}}},
  year         = {{2022}},
}

@phdthesis{37637,
  author       = {{Bialaschik, Max Oliver}},
  title        = {{{Ein Beitrag zum Warmgasstumpfschweißen von Kunststoffen}}},
  year         = {{2022}},
}

@phdthesis{37636,
  author       = {{Malatyali, Hatice}},
  title        = {{{Modellierung der Carbonfaserlängenverkürzung}}},
  year         = {{2022}},
}

@article{31185,
  author       = {{Ju, Xiaozhe and Mahnken, Rolf and Xu, Yangjian and Liang, Lihua and Cheng, Chun and Zhou, Wangmin}},
  issn         = {{0263-8223}},
  journal      = {{Composite Structures}},
  keywords     = {{Civil and Structural Engineering, Ceramics and Composites}},
  publisher    = {{Elsevier BV}},
  title        = {{{Multiscale analysis of composite structures with goal-oriented mesh adaptivity and reduced order homogenization}}},
  doi          = {{10.1016/j.compstruct.2022.115699}},
  year         = {{2022}},
}