@article{21614,
  abstract     = {{Renewable energy and storage systems are widely discussed to minimise the impact of global warming. In addition to the temporal resolution of simulation tools, also the chosen input data might have a strong impact on the performance of renewable energy systems, and energy storage systems in particular. This study analyses the impact of probabilistic weather data on the design of renewable energy systems. The main objective is hereby the determination of the robustness of a recently state-of-the-art design process of a 100% renewable energy and storage system with varying probabilistic input data. The island of La Gomera, Canary Islands, is taken as a case study. Although all analysed systems show some variance in their results, the combination of vehicle-to-grid and power-to-hydrogen shows the best economic performance. Hereby, small island energy systems depending heavily on wind energy show higher variations than those with high shares of solar energy. This analysis illustrates clearly that the choice of one historical reference year is not suitable to determine the expected performance of an energy system. To learn about their sensitivity, synthetic probabilistic inputs as applied in this study are a good way to determine both the expected mean values and their variance.}},
  author       = {{Meschede, Henning and Hesselbach, Jens and Child, Michael and Breyer, Christian}},
  journal      = {{International Journal of Sustainable Energy Planning and Management}},
  title        = {{{On the impact of probabilistic weather data on the economically optimal design of renewable energy systems – a case study on La Gomera island}}},
  doi          = {{10.5278/IJSEPM.3142}},
  year         = {{2019}},
}

@article{27026,
  abstract     = {{<jats:p>While observational studies show an association between 25(OH)vitamin D concentrations and depressive symptoms, intervention studies, which examine the preventive effects of vitamin D supplementation on the development of depression, are lacking. To estimate the role of lowered 25(OH)vitamin D concentrations in the etiology of depressive disorders, we conducted a two-sample Mendelian randomization (MR) study on depression, i.e., “depressive symptoms” (DS, n = 161,460) and “broad depression” (BD, n = 113,769 cases and 208,811 controls). Six single nucleotide polymorphisms (SNPs), which were genome-wide significantly associated with 25(OH)vitamin D concentrations in 79,366 subjects from the SUNLIGHT genome-wide association study (GWAS), were used as an instrumental variable. None of the six SNPs was associated with DS or BD (all p &gt; 0.05). MR analysis revealed no causal effects of 25(OH)vitamin D concentration, either on DS (inverse variance weighted (IVW); b = 0.025, SE = 0.038, p = 0.52) or on BD (IVW; b = 0.020, SE = 0.012, p = 0.10). Sensitivity analyses confirmed that 25(OH)vitamin D concentrations were not significantly associated with DS or BD. The findings from this MR study indicate no causal relationship between vitamin D concentrations and depressive symptoms, or broad depression. Conflicting findings from observational studies might have resulted from residual confounding or reverse causation.</jats:p>}},
  author       = {{Libuda, Lars and Laabs, Björn-Hergen and Ludwig, Christine and Bühlmeier, Judith and Antel, Jochen and Hinney, Anke and Naaresh, Roaa and Föcker, Manuel and Hebebrand, Johannes and König, Inke R. and Peters, Triinu}},
  issn         = {{2072-6643}},
  journal      = {{Nutrients}},
  title        = {{{Vitamin D and the Risk of Depression: A Causal Relationship? Findings from a Mendelian Randomization Study}}},
  doi          = {{10.3390/nu11051085}},
  year         = {{2019}},
}

@article{27025,
  author       = {{Knoll-Pientka, Nadja and Bühlmeier, Judith and Peters, Triinu and Albrecht, Muriel and Adams, Frederike and Wustrau, Katharina and Teufel, Martin and Hebebrand, Johannes and Föcker, Manuel and Libuda, Lars}},
  issn         = {{1590-1262}},
  journal      = {{Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity}},
  pages        = {{911--919}},
  title        = {{{Risk factors for a low weight gain in the early stage of adolescent anorexia nervosa inpatient treatment: findings from a pilot study}}},
  doi          = {{10.1007/s40519-019-00705-9}},
  year         = {{2019}},
}

@article{27521,
  author       = {{Hebebrand, Johannes and Milos, Gabriella and Wabitsch, Martin and Teufel, Martin and Führer, Dagmar and Bühlmeier, Judith and Libuda, Lars and Ludwig, Christine and Antel, Jochen}},
  issn         = {{1664-1078}},
  journal      = {{Frontiers in Psychology}},
  title        = {{{Clinical Trials Required to Assess Potential Benefits and Side Effects of Treatment of Patients With Anorexia Nervosa With Recombinant Human Leptin}}},
  doi          = {{10.3389/fpsyg.2019.00769}},
  year         = {{2019}},
}

@article{47947,
  author       = {{Rüsing, Michael and Weigel, Peter O. and Zhao, Jie and Mookherjea, Shayan}},
  issn         = {{1932-4510}},
  journal      = {{IEEE Nanotechnology Magazine}},
  keywords     = {{Electrical and Electronic Engineering, Mechanical Engineering}},
  number       = {{4}},
  pages        = {{18--33}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{Toward 3D Integrated Photonics Including Lithium Niobate Thin Films: A Bridge Between Electronics, Radio Frequency, and Optical Technology}}},
  doi          = {{10.1109/mnano.2019.2916115}},
  volume       = {{13}},
  year         = {{2019}},
}

@inbook{48341,
  author       = {{Wille, Manuel}},
  booktitle    = {{Textgliederungsprinzipien. Ihre Kennzeichnungsformen und Funktionen vom 8. bis 18. Jahrhundert. Akten zum Internationalen Kongress vom 22. bis 24. Juni 2017 an der Universität St. Petersburg}},
  editor       = {{Simmler, Franz and Baeva, Galina}},
  pages        = {{507 -- 531}},
  publisher    = {{Weidler}},
  title        = {{{Prinzipien und Strategien der Textgliederung in den Zeitungen des 18. Jahrhunderts – Eine computerbasierte Korpusanalyse}}},
  volume       = {{34}},
  year         = {{2019}},
}

@inbook{31142,
  author       = {{Schuster, Britt-Marie}},
  booktitle    = {{Textgliederungsprinzipien. Ihre Kennzeichnungsformen und Funktionen in Texten vom 8. bis 18. Jahrhundert. Akten zum Internationalen Kongress an der Staatlichen Universität St. Petersburg vom 22. bis 24. Juni 2017}},
  editor       = {{Simmler, Franz  and Baeva, Galina}},
  keywords     = {{Textsortengeschichte}},
  pages        = {{293–312}},
  publisher    = {{WEIDLER}},
  title        = {{{Textgliederungsprinzipien und Beziehungsgestaltung im Stammbuch von 1559–1878}}},
  year         = {{2019}},
}

@inproceedings{23720,
  abstract     = {{Die Instandsetzung von sicherheitskritischen Komponenten durch Besatzungsmitglieder auf See erfordert technische und organisa-torische Unterstützungsmaßnahmen. Zur Instandsetzung kritischer Systeme auf See bietet AR-Technologie erkennbare Potenziale (Räumliche Visualisierung, Kontextualisierung). Zugleich sollen Instandsetzungs-Einsätze im Sinne des informellen arbeits- und einsatzbezogenen Lernens zum Kompetenzerwerb genutzt werden. Dazu wird eine AR-Architektur vorgestellt, die das Lernen im Anwendungsfall ‚Instandsetzung‘ integriert.}},
  author       = {{Gräßler, Iris and Pottebaum, Jens and Taplick, Patrick and Roesmann, Daniel and Preuß, Daniel}},
  booktitle    = {{Go-3D 2019 "Mit 3D Richtung Maritim 4.0" - Tagungsband zur Konferenz Go-3D 2019}},
  editor       = {{Lukas, Uwe and Bauer, Kristine and Dolereit, Tim}},
  pages        = {{45--57}},
  publisher    = {{Fraunhofer Verlag}},
  title        = {{{Unterstützung des Lernens für kritische Situationen: Potenzial von Augmented Reality für die Instandsetzung auf See}}},
  year         = {{2019}},
}

@inproceedings{28098,
  abstract     = {{Platooning has repeatedly been shown to have the potential to increase both the efficiency and the safety of future road traffic. Yet, while there is ample research that illustrates its potential in freeway scenarios, the biggest challenges of traffic efficiency and safety lie in urban environments, which pose unique challenges: They are characterized by the presence of tight speed limits, intersections, traffic lights, and buildings. Moreover, work that has targeted such scenarios has, so far, not considered platoon formation strategies - or only considered idealized vehicle dynamics, platooning controllers, or wireless network dynamics. We fill this gap by investigating dynamic platoon formation at urban intersections controlled by regular traffic lights. We propose a fuel-efficient strategy for platoon formation at such intersections and investigate its performance using realistic simulation models of (all of) vehicle dynamics, platooning controllers, and wireless networking. Our investigation reveals both challenges in wireless networking as well as the potential of the proposed strategy to simultaneously save both 15 % of fuel and 14 % of travel time.}},
  author       = {{Hardes, Tobias and Sommer, Christoph}},
  booktitle    = {{44th IEEE Conference on Local Computer Networks (LCN 2019), Poster Session}},
  location     = {{Osnabrück}},
  publisher    = {{IEEE}},
  title        = {{{Dynamic Platoon Formation at Urban Intersections}}},
  year         = {{2019}},
}

@article{36846,
  author       = {{Kruse, Anne and Mummert, Michael}},
  issn         = {{1864-2993}},
  journal      = {{Werkstatt:Dialog}},
  number       = {{4}},
  pages        = {{34--35}},
  title        = {{{Mit 3D-Druck umfassende Teilhabe möglich machen }}},
  year         = {{2019}},
}

@misc{34124,
  abstract     = {{Es existieren bisher zahlreiche Studien, die das Potenzial von Augmented Reality (AR) in verschiedenen Bildungsbereichen und seine Auswirkungen auf die Lernenden hinsichtlich ihrer erhöhten Motivation, verbesserter Lernfähigkeit, Konzentration auf das Thema usw. hervorheben. Dabei eignen sich AR-Anwendungen sowohl für den Einsatz in formellen, als auch informellen Lernumgebungen und Bildungsinstitutionen, beginnend mit Kunstkursen in Vorschulen über Biologie, Geschichte, Chemie, Physik etc. in weiterführenden Schulen und Universitäten [1]. Trotz der steigenden Zahl an Studien liegen nur wenigen AR-Anwendungen ein geeignetes didaktisches Konzept zu Grunde. Ferner fehlen allgemeine Studien, die die lernfördernden Eigenschaften von AR im Bereich der Vorbereitung und Begleitung von Laborpraktika untersuchen. Aktuelle Anwendungen erweitern lediglich gedruckte Lerninhalte mit zusätzlichen Links, Videos oder statischen 3D-Modellen oder benötigen spezielle Voraussetzung für die Nutzung der AR-Anwendung [2]. Der vorliegende Beitrag untersucht und konzentriert sich daher auf ein didaktisches Konzept für eine auf mobilen Geräten basierende AR-Anwendung (App) zum Erwerb und zur Vertiefung praktischer Fertigkeiten im Umgang mit elektrotechnischen Laborgeräten und -komponenten. In einer früheren Arbeit wurden die Möglichkeiten und Grenzen der AR-Technologie in der Ingenieurausbildung mit besonderem Fokus auf Laborarbeit untersucht, um häufige Fehler im Designkonzept zu vermeiden. Das didaktische Grundkonzept beruht auf dem „Constructive Alignement“ nach Biggs [3] mit der Definition der drei obligatorischen Schritte: Lernziele, Lehr- / Lernaktivitäten und Prüfungsmethoden. Die Lernziele werden –  angelehnt an die modifizierte Bloom-Taxonomie nach Anderson und Krathwohl [4] – weiter konkretisiert, woraus dann im weiteren Schritt mögliche Lehrszenarien in AR gestaltet wurden.}},
  author       = {{Alptekin, Mesut and Temmen, Katrin}},
  keywords     = {{Augmented Reality, Laborpraktikum, didaktische Konzepte, Constructive Alignment}},
  publisher    = {{Gudrun Kammasch, Henning Klaf e, Sönke Knutzen (Hrsg.)}},
  title        = {{{Posterbeitrag: Didaktisches Konzept und Prototyp eines auf Augmented Reality basierenden virtuellen Vorpraktikums in der Elektrotechnik}}},
  year         = {{2019}},
}

@article{19424,
  author       = {{Lenz, Peter and Mahnken, Rolf}},
  issn         = {{1617-7061}},
  journal      = {{PAMM}},
  title        = {{{Damage simulation of fiber reinforced composites using mean‐field homogenization methods}}},
  doi          = {{10.1002/pamm.201900370}},
  year         = {{2019}},
}

@article{40582,
  author       = {{Sánchez-Leija, R.J. and Lopez Salas, Nieves and Fierro, J.L.G. and Gutiérrez, M.C. and Ferrer, M.L. and Mota-Morales, J.D. and Luna-Bárcenas, G. and Monte, F. del}},
  issn         = {{0008-6223}},
  journal      = {{Carbon}},
  keywords     = {{General Chemistry, General Materials Science}},
  pages        = {{813--826}},
  publisher    = {{Elsevier BV}},
  title        = {{{Deep eutectic solvents as active media for the preparation of highly conducting 3D free-standing PANI xerogels and their derived N-doped and N-, P-codoped porous carbons}}},
  doi          = {{10.1016/j.carbon.2019.02.055}},
  volume       = {{146}},
  year         = {{2019}},
}

@phdthesis{41960,
  abstract     = {{Um das Verhalten von Strukturen frühzeitig im Entwicklungsprozess mittels numerischer Simulationen vorhersagen zu können, ist eine genaue Beschreibung der Materialeigen-schaften notwendig. Diese Arbeit fokussiert sich auf das orthotrope Versagen von hoch- und ultrahochfesten Stahlblechen. Das Materialverhalten wurde u.a. mittels optischer Dehnungsmessung untersucht und zeigte eine Abhängigkeit von dem Belastungszustand und der Probenorientierung. Zudem wurde für einen ausgewählten hochfesten Stahl der Einfluss der Materialdicke auf das Materialverhalten bestimmt.Auf Basis der lokalen Dehnungen wurde die plastische Instabilität, definiert als Beginn der makroskopischen Schädigung, experimentell bestimmt. Mittels der lokalen Dehnungen und eines Plastizitätsmodells wurden die Lastpfade der untersuchten Proben ermittelt, die Belastungszustände bei Versagen bestimmt und die Versagenskurven des Materialmodells definiert.Anhand der experimentellen Ergebnisse wurden die Materialien orthotrop charakterisiert. Um den Einfluss der Orthotropie zu bestimmen, wurde eine Robustheitsanalyse durchgeführt. Mittels der Materialmodelle konnte das Verhalten der Proben vorhergesagt werden. Allerdings zeigte das orthotrope Materialmodell einen nur geringen Einfluss auf das untersuchte Bauteil der Robustheitsanalyse.}},
  author       = {{Stolzenburg, Marc Patrick}},
  pages        = {{167}},
  title        = {{{Experimental Basis for an Orthotropic Failure Model for Application in Crash Simulation}}},
  doi          = {{10.17619/UNIPB/1-572}},
  year         = {{2019}},
}

@phdthesis{42786,
  author       = {{Rieks, Sebastian}},
  isbn         = {{9783843938884}},
  title        = {{{Modellierung und numerische Simulation gekoppelter Transportprozesse in Strukturelementen kleinskaliger Destillationsverfahren für binäre Zweiphasensysteme }}},
  year         = {{2019}},
}

@article{25908,
  abstract     = {{Herein we present a new proton-conducting iron(II) metal–organic framework (MOF) of an unusual structure formed by chains of alternating bistriazolate-p-benzoquinone anions and iron(II) cations with four axially coordinated water molecules. These chains assemble via π–π stacking between the aromatic units to form a three-dimensional grid-like network with channel pores filled with water molecules. The material was structurally characterized by single-crystal XRD analysis, and its water and thermal stability was investigated. The proton conductivity was studied by impedance measurements on needle-like single crystals. A simple but efficient measurement setup consisting of interdigital electrodes was used. The influence of the crystal orientation, temperature, and humidity was investigated. The iron(II)-MOF showed the highest proton conductivity of 3.3·10–3 S cm–1 at 22 °C and 94% relative humidity. Contrary to most known structures, the conductivity in this material is controlled by chemical properties of the pore system rather than by grain boundaries. The presented material is the starting point for further tailoring the proton-conducting properties, independent of morphological features which could find potential applications as membrane materials in proton-exchange membrane fuel cells.}},
  author       = {{Bunzen, Hana and Javed, Ali and Klawinski, Danielle and Lamp, Anton and Grzywa, Maciej and Kalytta-Mewes, Andreas and Tiemann, Michael and von Nidda, Hans-Albrecht Krug and Wagner, Thorsten and Volkmer, Dirk}},
  issn         = {{2574-0970}},
  journal      = {{ACS Applied Nano Materials}},
  pages        = {{291--298}},
  title        = {{{Anisotropic Water-Mediated Proton Conductivity in Large Iron(II) Metal–Organic Framework Single Crystals for Proton-Exchange Membrane Fuel Cells}}},
  doi          = {{10.1021/acsanm.8b01902}},
  year         = {{2019}},
}

@inproceedings{43748,
  abstract     = {{The fundamental interband absorption in gallium arsenide shows a strong blue shift when biased by mid-infrared transients exceeding 10 MV/cm. This subcycle feature is induced by the localization of electronic wavefunctions from 3D to 2D.}},
  author       = {{Meier, Torsten and Bühler, Johannes and Schmidt, Christian and Heinrich, Alexander-Cornelius and Allerbeck, Jonas and Podzimski, Reinold and Berghoff, Daniel and Schmidt, Wolf Gero and Reichl, Christian and Wegscheider, Werner and Brida, Daniele and Leitenstorfer, Alfred}},
  booktitle    = {{XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)}},
  publisher    = {{EDP Sciences}},
  title        = {{{Subcycle Wannier-Stark Localization by Mid-Infrared Bias in Gallium Arsenide}}},
  doi          = {{10.1051/epjconf/201920505001}},
  volume       = {{205}},
  year         = {{2019}},
}

@inproceedings{22441,
  abstract     = {{According to ISO / ASTM 52900, additive manufacturing (AM) is defined as "the process of joining materials to make parts from 3D model data, usually layer upon layer, as opposed to conventional manufacturing including subtractive manufacturing technologies and formative manufacturing methodologies” [1]. This results in significant advantages over conventional manufacturing methodologies, such as the production of topologically optimized, complex structures, lower material consumption or shorter product development cycles. In order to be able to use these advantages, the possibilities and restrictions of the processes must be known. In particular, selective laser beam melting (SLM), in which a powdery metallic starting material is melted by means of a laser, requires a sound understanding of the process. For this purpose, design guidelines have been presented in various scientific papers. These design guidelines help to design a component in such a way that it can be manufactured successfully using additive manufacturing. These so-called “AMsuitable design guidelines” can be found among others at Adam, Kranz and Thomas [2,3,4,5]. In contrast to established manufacturing processes, the post-processing of additive components is divided into two steps. First, the AM immanent post processing, such as the removing of the component from the building platform or the removing of the remaining powder. These post-processing steps are in the following referred to “post-processing”. Secondly, the subsequent post-processing steps to improve the component properties, such as milling and turning or a stress-relief annealing. These are referred to as “finishing” and form the focus of this paper. With regard to a successful finishing of additively manufactured components, design guidelines must be taken into account that consider the finishing inherent restrictions and possibilities. In the following, these design guidelines are referred to “finishing suitable”. They can deviate significantly from those of conventionally manufactured components in the case of additively manufactured components. Although there are some investigations that deal with the post-processing of additively manufactured components [6,7], there are hardly any design guidelines that are suitable for finishing [8]. Therefore, knowledge about the finishing of additively manufactured components is based on experimental experience rather than on scientific knowledge. For this reason, design guidelines for a finishing suitable design must be methodically determined and quantified. These quantified design guidelines can be used for an automated design check on complex components like topology optimized geometries.}},
  author       = {{Lammers, Stefan and Tominski, Johannes and Zimmer, Detmar}},
  booktitle    = {{II International Conference on Simulation for Additive Manufacturing Sim-AM 2019 11-13 September, 2019}},
  isbn         = {{978-84-949194-8-0}},
  pages        = {{174--185}},
  title        = {{{Guidelines for post processing oriented design of additive manufactured parts for use in topology optimization}}},
  doi          = {{http://congress.cimne.com/sim-am2019/frontal/doc/EbookSim-AM2019.pdf}},
  year         = {{2019}},
}

@phdthesis{10000,
  abstract     = {{Ultraschall wird zur Effizienzsteigerung in verfahrenstechnischen Prozessen eingesetzt. Die Betriebsparamter der Ultraschallsysteme werden empirisch ermittelt, da derzeit keine systematische Analyse der Wechselwirkung zwischen Ultraschallwandler und Schallfeld sowie kein Verfahren zur Messung der Kavitationsaktivität ohne zusätzlichen Sensor existieren. Auf Basis einer experimentellen Analyse des betrachteten sonochemischen Reaktors wird ein Finite-Elemente-Modell aufgebaut, das die Wechselwirkung zwischen Schallfeld und Ultraschallwandler berücksichtigt. Die modellbasierte Analyse zeigt, dass wegen der akustischen Eigenschaften des Autoklavs nur direkt an der Sonotrode Kavitation entsteht. Die Wechselwirkung zwischen Ultraschallwandler und Schallfeld ermöglicht Aussagen über das Schallfeld und die Kavitationsaktivität auf Basis der Rückwirkung auf den Ultraschallwandler. Die lineare Schalldruckverteilung ermöglicht eine Prognose über die Verteilung von Kavitationszonen. Das beschriebene Modell liefert wertvolle Erkenntnisse für die Auslegung, Analyse und Skalierung sonochemischer Reaktoren. Auf Grund der rauen Prozessrandbedingungen ist die Applikation von Sensoren zur Überwachung der Kavitationsaktivität in vielen sonochemischen Prozessen nicht möglich. Zur prozessbegleitenden Messung der Kavitationsaktivität wird ein Verfahren entwickelt, das die Bewertung der Kavitationsaktivität durch Auswertung der Rückwirkung auf den Ultraschallwandler erlaubt. Das Messverfahren ermöglicht eine vorhersagbare und reproduzierbare Durchführung kavitationsbasierter Prozesse und stellt eine wichtige Erweiterung für bestehende und neue Ultraschallsysteme dar.}},
  author       = {{Bornmann, Peter}},
  keywords     = {{Sonochemie, Akustische Kavitation, Kavitationsmessung, Kavitationsdetektion, FEM-Simulation Ultraschallwandler, Prozessüberwachung, FEM-Simulation Schallfeld, Self-Sensing, Piezoelektrische Ultraschallwandler, Ultraschallreinigung}},
  publisher    = {{Shaker}},
  title        = {{{Modellierung und experimentelle Charakterisierung der Wechselwirkung zwischen Ultraschallwandler und Flüssigkeit in kavitationsbasierten Prozessen}}},
  year         = {{2019}},
}

@article{64780,
  abstract     = {{The increasing trend of multi-material and space-frame design in automotive car body constructions consolidates the need for mechanical joining technologies with one-sided accessibility. The high-speed joining process (also called “RIVTAC®” or “Impact”) is an innovative and flexible technology. In this process, a tack having a profiled shank and an ogival shaped tip is pushed into the joining partners with a speed of 20 to 40 m/s without any pre-punching. The plastic and friction work is converted into heat, which causes an abrupt rise of temperature in the joining zone. This improves the flowability of the material which leads to filling the annular grooves existing on the shank of the tack. Simultaneously, a force-fit is created between the sheet metal and the tack. Furthermore, the effects of inertia are used so that the thin-walled structures can be joined without any additional tools (e.g. a die). The joining process causes the deformation of the structure, which must be taken into account with regard to tolerances. The numerical simulation is a powerful tool to predict the deformation and the joinability of a complex structure as well as the mechanical properties of the connection. The paper is about the detailed process- and load-simulation of high-speed joining as well as the required experimental data basis, such as temperature and strain rate dependent flow curves. Furthermore, the friction parameters are very important for the physical consideration of the force-fit connection. Coupled structural-thermal simulations of an axisymmetric 2D-model are performed using explicit and implicit codes.}},
  author       = {{Meschut, Gerson and Hein, David and Gerkens, Michael}},
  issn         = {{2351-9789}},
  journal      = {{Procedia Manufacturing}},
  pages        = {{280--287}},
  publisher    = {{Elsevier BV}},
  title        = {{{Numerical simulation of high-speed joining of sheet metal structures}}},
  doi          = {{10.1016/j.promfg.2019.02.173}},
  volume       = {{29}},
  year         = {{2019}},
}