@article{SchifferFerrein2016, author = {Schiffer, Stefan and Ferrein, Alexander}, title = {Decision-Theoretic Planning with Fuzzy Notions in GOLOG}, series = {International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems}, volume = {24}, journal = {International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems}, number = {Issue Suppl. 2}, publisher = {World Scientific}, address = {Singapur}, issn = {1793-6411}, doi = {10.1142/S0218488516400134}, pages = {123 -- 143}, year = {2016}, abstract = {In this paper we present an extension of the action language Golog that allows for using fuzzy notions in non-deterministic argument choices and the reward function in decision-theoretic planning. Often, in decision-theoretic planning, it is cumbersome to specify the set of values to pick from in the non-deterministic-choice-of-argument statement. Also, even for domain experts, it is not always easy to specify a reward function. Instead of providing a finite domain for values in the non-deterministic-choice-of-argument statement in Golog, we now allow for stating the argument domain by simply providing a formula over linguistic terms and fuzzy uents. In Golog's forward-search DT planning algorithm, these formulas are evaluated in order to find the agent's optimal policy. We illustrate this in the Diner Domain where the agent needs to calculate the optimal serving order.}, language = {en} } @article{PfaffSchmidt2016, author = {Pfaff, Raphael and Schmidt, Bernd}, title = {Daten in der Cloud - und dann?}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {6}, publisher = {Bahn-Fachverlag}, address = {Berlin}, issn = {0948-7263}, pages = {50 -- 55}, year = {2016}, abstract = {Schienenverkehrssysteme stehen in zunehmendem Wettbewerb, sowohl untereinander als auch mit anderen Verkehrstr{\"a}gern. Als wichtiger Aspekt zur Steigerung der Kosteneffizienz wird die Digitalisierung des Betriebs und der Fahrzeuge betrachtet. {\"U}ber eine Prognose der Ausfallwahrscheinlichkeit bzw. Restlebensdauer von Subsystemen k{\"o}nnen mittels Digitalisierung die Instandhaltungskosten gesenkt werden. Die geringen Fehlerraten im System Bahn machen die Nutzung besonderer Simulationstechniken notwendig. In diesem Beitrag wird gezeigt, wie sich die Subsystemverf{\"u}gbarkeit aus den beobachteten Fehlerraten der Teilfunktionen vorhersagen l{\"a}sst.}, language = {de} } @article{BarnatKennewegSaldenetal.2016, author = {Barnat, Miriam and Kenneweg, Anne Cornelia and Salden, Peter and Schramm, Christin and Schumann, Marlen}, title = {Das ‚Junge Forum' als Format der Nachwuchsf{\"o}rderung. Ein Beitrag zu Professionalisierung, Netzwerkbildung und kooperativem Lernen}, series = {Lern- und Bildungsprozesse gestalten. Junges Forum Medien und Hochschulentwicklung (JFMH13)}, journal = {Lern- und Bildungsprozesse gestalten. Junges Forum Medien und Hochschulentwicklung (JFMH13)}, publisher = {Waxmann}, address = {M{\"u}nster}, isbn = {978-3-8309-3397-7}, doi = {10.25656/01:16852}, url = {http://nbn-resolving.de/urn:nbn:de:0111-pedocs-168520}, pages = {269 -- 282}, year = {2016}, abstract = {Im Mai 2012 fand in Hamburg erstmals das „Junge Forum Hochschul- und Mediendidaktik" statt, im Juni 2013 folgte in Potsdam die zweite Auflage als „Junges Forum Medien und Hochschulentwicklung". 2014 wurde das dritte „Forum" in Dresden und 2015 das vierte in D{\"u}sseldorf ausgerichtet. Das f{\"u}nfte Forum wird 2016 an der Technischen Universit{\"a}t Darmstadt stattfinden. Initiiert und organisiert wird die Veranstaltung stets von jungen Praktikerinnen und Praktikern sowie Forscherinnen und Forschern mit dem Ziel, dem ‚Nachwuchs' in diesem Bereich ein Austauschforum zu geben. Der vorliegende Artikel stellt die konzeptionellen {\"U}berlegungen vor, die hinter diesen Treffen stehen. Er zeigt im R{\"u}ckgriff auf Netzwerktheorie und aktuelle Diskussionen um Professionalisierung und Third Space, wieso f{\"u}r dieses Format ein aktueller Bedarf besteht, und begr{\"u}ndet dann im R{\"u}ckgriff auf didaktische Konzepte auch die methodische Gestaltung der Veranstaltungen. Unsere These: Das kooperative Lernen in Netzwerken ist ein wichtiger Baustein f{\"u}r die Professionalisierung des hochschul- und mediendidaktischen Nachwuchses.}, language = {de} } @article{KrollLudwigs2016, author = {Kroll-Ludwigs, Kathrin}, title = {Das Verh{\"a}ltnis von Haager Unterhaltsprotokoll (2007) und Haager Unterhalts-{\"u}bereinkommen (1973): lex posterior derogat legi priori?}, series = {IPRax : Praxis des internationalen Privat- und Verfahrensrechts}, volume = {36}, journal = {IPRax : Praxis des internationalen Privat- und Verfahrensrechts}, number = {1}, publisher = {Gieseking}, address = {Bielefeld}, issn = {0720-6585}, pages = {34 -- 40}, year = {2016}, abstract = {In der EU richtet sich das auf unterhaltsrechtliche Sachverhalte mit grenz{\"u}berschreitendem Bezug anwendbare Recht seit dem 18. Juni 2011 nach dem Haager Protokoll {\"u}ber das auf Unterhaltspflichten anwendbare Recht vom 23. November 2007 („HUP"). Dieser Rechtsakt, der EU-weit anwendbar ist, hat das Haager Unterhalts{\"u}bereinkommen von 1973 („HU{\"U}") ersetzt und das Unterhaltskollisionsrecht in der EU auf eine neue, einheitliche Grundlage gestellt. Bei den Vorschriften des HUP handelt es sich um sog. lois universelles, die unabh{\"a}ngig davon gelten, welche Staatsangeh{\"o}rigkeit die unterhaltsberechtigte bzw. die unterhaltsverpflichtete Person haben. Zu beachten ist aber, dass die Bundesrepublik Deutschland ebenso wie die T{\"u}rkei, die Schweiz, Japan und Albanien das HU{\"U} ratifiziert hatten. F{\"u}r die Nicht-EU-Staaten besteht aber keine Bindung an die Vorschriften des HUP, so dass sich im Verh{\"a}ltnis zu ihnen die Frage stellt, ob das HU{\"U} weiterhin Anwendung finden kann. Die Problematik ist gerade im Hinblick auf die erweiterten Rechtswahlm{\"o}glichkeiten des HUP von erheblicher praktischer Relevanz.}, language = {de} } @article{PinkenburgSchiffelsSelmer2016, author = {Pinkenburg, Olaf and Schiffels, Johannes and Selmer, Thorsten}, title = {Das CoLibry-Konzept - ein Werkzeugkasten f{\"u}r die Synthetische Biologie: Bioproduktion}, series = {BIOspektrum}, volume = {22}, journal = {BIOspektrum}, number = {6}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/s12268-016-0734-8}, pages = {593 -- 595}, year = {2016}, abstract = {Regardless of size or destination, synthetic biology starts with com-parably small information units, which need to be combined and properly arranged in order to achieve a certain goal. This may be the de novo synthesis of individual genes from oligonucleotides, a shuffling of protein domains in order to create novel biocatalysts, the assembly of multiple enzyme encoding genes in metabolic pathway design, or strain development at the production stage. The CoLibry concept has been designed in order to close the gap between recombinant production of individual genes and genome editing.}, language = {de} } @article{SchuellerKowalskiRaback2016, author = {Sch{\"u}ller, K. and Kowalski, Julia and Raback, P.}, title = {Curvilinear melting - A preliminary experimental and numerical study}, series = {International Journal of Heat and Mass Transfer}, journal = {International Journal of Heat and Mass Transfer}, number = {92}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2015.09.046}, pages = {884 -- 892}, year = {2016}, abstract = {When exploring glacier ice it is often necessary to take samples or implement sensors at a certain depth underneath the glacier surface. One way of doing this is by using heated melting probes. In their common form these devices experience a straight one-dimensional downwards motion and can be modeled by standard close-contact melting theory. A recently developed melting probe however, the IceMole, achieves maneuverability by simultaneously applying a surface temperature gradient to induce a change in melting direction and controlling the effective contact-force by means of an ice screw to stabilize its change in attitude. A modeling framework for forced curvilinear melting does not exist so far and will be the content of this paper. At first, we will extend the existing theory for quasi-stationary close-contact melting to curved trajectories. We do this by introducing a rotational mode. This additional unknown in the system implies yet the need for another model closure. Within this new framework we will focus on the effect of a variable contact-force as well as different surface temperature profiles. In order to solve for melting velocity and curvature of the melting path we present both an inverse solution strategy for the analytical model, and a more general finite element framework implemented into the open source software package ELMER. Model results are discussed and compared to experimental data conducted in laboratory tests.}, language = {de} } @article{ChenSchoembergKraffetal.2016, author = {Chen, Bixia and Schoemberg, Tobias and Kraff, Oliver and Dammann, Philipp and Bitz, Andreas and Schlamann, Marc and Quick, Harald H. and Ladd, Mark E. and Sure, Ulrich and Wrede, Karsten H.}, title = {Cranial fixation plates in cerebral magnetic resonance imaging: a 3 and 7 Tesla in vivo image quality study}, series = {Magnetic Resonance Materials in Physics, Biology and Medicine}, volume = {29}, journal = {Magnetic Resonance Materials in Physics, Biology and Medicine}, number = {3}, publisher = {Springer}, address = {Berlin}, issn = {1352-8661}, doi = {10.1007/s10334-016-0548-1}, pages = {389 -- 398}, year = {2016}, abstract = {Objective This study assesses and quantifies impairment of postoperative magnetic resonance imaging (MRI) at 7 Tesla (T) after implantation of titanium cranial fixation plates (CFPs) for neurosurgical bone flap fixation. Materials and methods The study group comprised five patients who were intra-individually examined with 3 and 7 T MRI preoperatively and postoperatively (within 72 h/3 months) after implantation of CFPs. Acquired sequences included T₁-weighted magnetization-prepared rapid-acquisition gradient-echo (MPRAGE), T₂-weighted turbo-spin-echo (TSE) imaging, and susceptibility-weighted imaging (SWI). Two experienced neurosurgeons and a neuroradiologist rated image quality and the presence of artifacts in consensus reading. Results Minor artifacts occurred around the CFPs in MPRAGE and T2 TSE at both field strengths, with no significant differences between 3 and 7 T. In SWI, artifacts were accentuated in the early postoperative scans at both field strengths due to intracranial air and hemorrhagic remnants. After resorption, the brain tissue directly adjacent to skull bone could still be assessed. Image quality after 3 months was equal to the preoperative examinations at 3 and 7 T. Conclusion Image quality after CFP implantation was not significantly impaired in 7 T MRI, and artifacts were comparable to those in 3 T MRI.}, language = {en} } @article{Wrede2016, author = {Wrede, Oliver}, title = {Continuity in travel information}, series = {Information Design Journal}, volume = {22}, journal = {Information Design Journal}, number = {2}, publisher = {John Benjamins}, address = {Amsterdam}, issn = {0142-5471}, doi = {10.1075/idj.22.2.09wre}, pages = {172 -- 178}, year = {2016}, abstract = {This article discusses the contrast between the information transportation companies provide to travellers and that of their brand messaging. Companies' brand messaging often portrays the service they provide as pleasant, stress free and perfect. Customers and users of the service, on the other hand, often describe their experience of the service as a negative one. This article suggests that the brand value would be greater if transportation companies paid more attention to the users' experience when designing their information systems, particularly in worst case scenarios.}, language = {en} } @article{WulfhorstDuweMerseburgetal.2016, author = {Wulfhorst, Helene and Duwe, Anna-Maria and Merseburg, Johannes and Tippk{\"o}tter, Nils}, title = {Compositional analysis of pretreated (beech) wood using differential scanning calorimetry and multivariate data analysis}, series = {Tetrahedron}, volume = {72}, journal = {Tetrahedron}, number = {46}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.tet.2016.04.029}, pages = {7329 -- 7334}, year = {2016}, abstract = {The composition of plant biomass varies depending on the feedstock and pre-treatment conditions and influences its processing in biorefineries. In order to ensure optimal process conditions, the quantitative proportion of the main polymeric components of the pre-treated biomass has to be determined. Current standard procedures for biomass compositional analysis are complex, the measurements are afflicted with errors and therefore often not comparable. Hence, new powerful analytical methods are urgently required to characterize biomass. In this contribution, Differential Scanning Calorimetry (DSC) was applied in combination with multivariate data analysis (MVA) to detect the cellulose content of the plant biomass pretreated by Liquid Hot Water (LHW) and Organosolv processes under various conditions. Unlike conventional techniques, the developed analytic method enables the accurate quantification of monosaccharide content of the plant biomass without any previous sample preparation. It is easy to handle and avoids errors in sample preparation.}, language = {en} } @article{FunkeBeckmannKeinzetal.2016, author = {Funke, Harald and Beckmann, Nils and Keinz, Jan and Abanteriba, Sylvester}, title = {Comparison of Numerical Combustion Models for Hydrogen and Hydrogen-Rich Syngas Applied for Dry-Low-NOx-Micromix-Combustion}, series = {ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition Volume 4A: Combustion, Fuels and Emissions Seoul, South Korea, June 13-17, 2016}, journal = {ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition Volume 4A: Combustion, Fuels and Emissions Seoul, South Korea, June 13-17, 2016}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-4975-0}, doi = {10.1115/GT2016-56430}, pages = {12}, year = {2016}, abstract = {The Dry-Low-NOₓ (DLN) Micromix combustion technology has been developed as low emission combustion principle for industrial gas turbines fueled with hydrogen or syngas. The combustion process is based on the phenomenon of jet-in-crossflow-mixing. Fuel is injected perpendicular into the air-cross-flow and burned in a multitude of miniaturized, diffusion-like flames. The miniaturization of the flames leads to a significant reduction of NOₓ emissions due to the very short residence time of reactants in the flame. In the Micromix research approach, CFD analyses are validated towards experimental results. The combination of numerical and experimental methods allows an efficient design and optimization of DLN Micromix combustors concerning combustion stability and low NOₓ emissions. The paper presents a comparison of several numerical combustion models for hydrogen and hydrogen-rich syngas. They differ in the complexity of the underlying reaction mechanism and the associated computational effort. For pure hydrogen combustion a one-step global reaction is applied using a hybrid Eddy-Break-up model that incorporates finite rate kinetics. The model is evaluated and compared to a detailed hydrogen combustion mechanism derived by Li et al. including 9 species and 19 reversible elementary reactions. Based on this mechanism, reduction of the computational effort is achieved by applying the Flamelet Generated Manifolds (FGM) method while the accuracy of the detailed reaction scheme is maintained. For hydrogen-rich syngas combustion (H₂-CO) numerical analyses based on a skeletal H₂/CO reaction mechanism derived by Hawkes et al. and a detailed reaction mechanism provided by Ranzi et al. are performed. The comparison between combustion models and the validation of numerical results is based on exhaust gas compositions available from experimental investigation on DLN Micromix combustors. The conducted evaluation confirms that the applied detailed combustion mechanisms are able to predict the general physics of the DLN-Micromix combustion process accurately. The Flamelet Generated Manifolds method proved to be generally suitable to reduce the computational effort while maintaining the accuracy of detailed chemistry. Especially for reaction mechanisms with a high number of species accuracy and computational effort can be balanced using the FGM model.}, language = {en} }