@misc{Poehlmann, author = {P{\"o}hlmann, Kendra}, title = {Research Based Spin-Offs: Understanding the specifics of Best Performers}, doi = {10.35096/othr/pub-9018}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-90181}, pages = {29}, abstract = {This presentation investigates the success factors of research-based spin-offs, with a particular focus on the differences between best and worst performers. Based on an empirical study of German spin-offs originating from public research institutions, key influencing factors such as team size, degree of innovation, market conditions, and the role of the parent organization are analyzed. The findings indicate that spin-off success is shaped by a combination of entrepreneurial, technological, and contextual factors, and varies depending on the applied performance measure (e.g., growth, financial performance, or technological output). The study provides nuanced insights into the mechanisms of successful knowledge and technology transfer and derives implications for both research institutions and founders.}, language = {en} } @article{HoegeleLoeschelMerkleetal., author = {Hoegele, W. and L{\"o}schel, Rainer and Merkle, N. and Zygmanski, Piotr}, title = {An efficient inverse radiotherapy planning method for VMAT using quadratic programming optimization}, series = {Medical physics}, volume = {39}, journal = {Medical physics}, number = {1}, publisher = {American Association of Physicists in Medicine}, doi = {10.1118/1.3671922}, pages = {444 -- 454}, abstract = {PURPOSE The purpose of this study is to investigate the feasibility of an inverse planning optimization approach for the Volumetric Modulated Arc Therapy (VMAT) based on quadratic programming and the projection method. The performance of this method is evaluated against a reference commercial planning system (eclipse(TM) for rapidarc(TM)) for clinically relevant cases. METHODS The inverse problem is posed in terms of a linear combination of basis functions representing arclet dose contributions and their respective linear coefficients as degrees of freedom. MLC motion is decomposed into basic motion patterns in an intuitive manner leading to a system of equations with a relatively small number of equations and unknowns. These equations are solved using quadratic programming under certain limiting physical conditions for the solution, such as the avoidance of negative dose during optimization and Monitor Unit reduction. The modeling by the projection method assures a unique treatment plan with beneficial properties, such as the explicit relation between organ weightings and the final dose distribution. Clinical cases studied include prostate and spine treatments. The optimized plans are evaluated by comparing isodose lines, DVH profiles for target and normal organs, and Monitor Units to those obtained by the clinical treatment planning system eclipse(TM). RESULTS The resulting dose distributions for a prostate (with rectum and bladder as organs at risk), and for a spine case (with kidneys, liver, lung and heart as organs at risk) are presented. Overall, the results indicate that similar plan qualities for quadratic programming (QP) and rapidarc(TM) could be achieved at significantly more efficient computational and planning effort using QP. Additionally, results for the quasimodo phantom [Bohsung et al., "IMRT treatment planning: A comparative inter-system and inter-centre planning exercise of the estro quasimodo group," Radiother. Oncol. 76(3), 354-361 (2005)] are presented as an example for an extreme concave case. CONCLUSION Quadratic programming is an alternative approach for inverse planning which generates clinically satisfying plans in comparison to the clinical system and constitutes an efficient optimization process characterized by uniqueness and reproducibility of the solution.}, language = {en} } @article{HecknerSchneidermeierHastreiteretal., author = {Heckner, Markus and Schneidermeier, Tim and Hastreiter, Isabella and Wolff, Christian}, title = {Der Newbie, der Fortgeschrittene und der Power-User. Warum es nicht reicht, "einfach mal die Nutzer zu fragen"}, series = {i-com}, volume = {11}, journal = {i-com}, number = {3}, publisher = {DeGruyter}, doi = {10.1524/icom.2012.0038}, pages = {47 -- 50}, abstract = {Innerbetriebliche Software entwickelt sich h{\"a}ufig {\"u}ber Jahre hinweg inkrementell weiter, sammelt so Schritt f{\"u}r Schritt Funktionen an und verliert an {\"U}bersichtlichkeit. Soll diese Software hinsichtlich ihrer Gebrauchstauglichkeit optimiert werden, m{\"u}ssen aus Sicht eines externen Usability-Beraters zun{\"a}chst die Dom{\"a}ne des Kunden verstanden und die Arbeitsprozesse analysiert werden. In der Analyse muss insbesondere der Umgang unterschiedlicher Nutzergruppen mit der Software ber{\"u}cksichtigt werden, um fundierte Neuvorschl{\"a}ge in einem Redesign erarbeiten zu k{\"o}nnen. In diesem Erfahrungsbericht beschreiben wir anhand eines konkreten Praxisbeispiels Eigenschaften von Nut-zergruppen und deren Einfluss auf die Analyse, und warum es nicht reicht, die Nutzer „einfach mal zu fragen, wie sie die Software denn finden".}, language = {de} } @inproceedings{BuchmannSchwaegerl, author = {Buchmann, Thomas and Schw{\"a}gerl, Felix}, title = {Ensuring well-formedness of configured domain models in model-driven product lines based on negative variability}, series = {FOSD '12: Proceedings of the 4th International Workshop on Feature-Oriented Software Development, 24. + 25. September 2012, Dresden}, booktitle = {FOSD '12: Proceedings of the 4th International Workshop on Feature-Oriented Software Development, 24. + 25. September 2012, Dresden}, publisher = {ACM Press}, address = {New York, USA}, doi = {10.1145/2377816.2377822}, pages = {37 -- 44}, abstract = {Model-driven development is a well-known practice in modern software engineering. Many tools exist which allow developers to build software in a model-based or even model-driven way, but they do not provide dedicated support for software product line development. Only recently some approaches combined model-driven engineering and software product line engineering. In this paper we present an approach that allows for combining feature models and Ecore-based domain models and provides extensive support to keep the mapping between the involved models consistent. Our key contribution is a declarative textual language which allows to phrase domain-specific consistency constraints which are preserved during the configuration process in order to ensure context-sensitive syntactical correctness of derived domain models.}, language = {en} } @inproceedings{KellnerOttoBusch, author = {Kellner, Florian and Otto, Andreas and Busch, Andreas}, title = {Distribution Networks - Rigid Investments In Dynamic Environments}, series = {Flexibility and adaptability of global supply chains - Proceedings of the 7th German-Russian Logistics Workshop (DR-LOG 2012)}, booktitle = {Flexibility and adaptability of global supply chains - Proceedings of the 7th German-Russian Logistics Workshop (DR-LOG 2012)}, editor = {Ivanov, Dimitri and Sokolov, Boris and K{\"a}schel, Joachim}, address = {Sankt Petersburg}, pages = {103 -- 111}, language = {en} } @article{KellnerIgl, author = {Kellner, Florian and Igl, Johannes}, title = {Estimating the effect of changing retailing structures on the greenhouse gas performance of FMCG distribution networks}, series = {Logistics Research}, volume = {4}, journal = {Logistics Research}, number = {3-4}, publisher = {Springer Nature}, doi = {10.1007/s12159-012-0063-3}, pages = {87 -- 99}, abstract = {The assessment of greenhouse gas (GHG) emissions of supply chain activities is performed to create transparency across the supply chain and to identify emission-cutting opportunities. Literature provides several generic and case study approaches to estimate GHG emissions. But research often focuses on products. This paper sheds light on how the greenhouse performance of a fast-moving consumer goods (FMCG) distribution network depends on several (FMCG specific) variables to set up a "CO2 network footprint". Within a quantitative computational study, the distribution network footprint of an existing FMCG manufacturer is analyzed. Three options being fundamentally able to reduce total GHG emissions are identified: number of distribution centers, performance of the engaged logistics service provider and shipment structure. First, transportation processes for the investigated FMCG manufacturer are analyzed to derive GHG emissions caused by different distribution shipments. Second, initial data are manipulated to simulate variable changes, that is, different logistics structures. Third, results are reported and analyzed to show up how different changes in logistics structures may reduce GHG, without technological propulsion or use of regenerative energy.}, language = {en} } @article{KellnerOtto, author = {Kellner, Florian and Otto, Andreas}, title = {Allocating CO2 emissions to shipments in road freight transportation}, series = {Journal of Management Control}, volume = {22}, journal = {Journal of Management Control}, number = {4}, publisher = {Springer}, doi = {10.1007/s00187-011-0143-6}, pages = {451 -- 479}, abstract = {Logistic activity, in particular transportation, produces green house gases (GHG). For different purposes GHG need to be allocated to objects. This paper studies how to allocate the GHG volume of a transportation process (delivery tour) to the single shipments moved by the process. First, it identifies classes of generic allocation schemes and presents 15 allocation methods. Second, since the majority of these methods has not been designed for allocating GHG, we apply and compare them in the short distance transport context within a numerical example. The aim is to study how the schemes perform according to criteria. We suggest using causality, efficiency, empty core robustness, symmetry, individual rationality, coalition stability, ease of application, and set robustness as appraisal criteria and attempt to mainstream the discussion by recommending selected allocation methods.}, language = {en} } @article{LienlandKellner, author = {Lienland, Bernhard and Kellner, Florian}, title = {Projektauswahl mit der linearen Optimierung im Mittelstand}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {49}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer}, doi = {10.1007/BF03340699}, pages = {52 -- 62}, abstract = {Die Projektauswahl stellt eine Herausforderung insbesondere f{\"u}r mittelst{\"a}ndische Industrieunternehmen dar. Abh{\"a}ngigkeiten verschiedener Alternativen und vorgegebene Investitionsbudgets f{\"u}hren bei Anwendung von in der Praxis standardm{\"a}ßig eingesetzten Verfahren regelm{\"a}ßig zu suboptimalen Projektkombinationen. In enger Abstimmung mit einem Automobilzulieferer wurde ein Ansatz zur Projektauswahl unter Ber{\"u}cksichtigung von Ressourcen und laufenden Projekten entwickelt sowie technisch umgesetzt. Implementierte Praxistests belegen Verbesserungen bei der Projektauswahl, aber auch bei der Budgeteinhaltung, der Fixkostenreduzierung sowie der Angebotspreisbestimmung.}, language = {de} } @incollection{Goertler, author = {G{\"o}rtler, Michael}, title = {Politikdidaktik und Zeit}, series = {Reifezeiten: Zur Bedeutung der Zeit in Bildung, Politik und politischer Bildung}, booktitle = {Reifezeiten: Zur Bedeutung der Zeit in Bildung, Politik und politischer Bildung}, editor = {G{\"o}rtler, Michael and Reheis, Fritz}, publisher = {Wochenschau Verl.}, address = {Schwalbach, Taunus}, isbn = {3-89974-781-X}, pages = {193 -- 208}, subject = {Zeitdruck}, language = {de} } @misc{OPUS4-6658, title = {Reifezeiten: Zur Bedeutung der Zeit in Bildung, Politik und politischer Bildung}, series = {Wochenschau Wissenschaft}, journal = {Wochenschau Wissenschaft}, editor = {G{\"o}rtler, Michael and Reheis, Fritz}, publisher = {Wochenschau Verl.}, address = {Schwalbach, Taunus}, isbn = {3-89974-781-X}, abstract = {Der Zeitdruck steigt, auch in Schulen und Parlamenten. Das beklagen Viele. Ist diese Klage berechtigt? Dient das Bem{\"u}hen um Zeit-ersparnis im Kontext von Bildung und Politik tats{\"a}chlich den Zielen, die dabei erreicht werden sollen? Wie groß sind die Risiken der Beschleunigung hinsichtlich der Qualit{\"a}t der Ergebnisse, n{\"a}mlich der Formung der individuellen Pers{\"o}nlichkeit des Menschen wie des politischen Willens der Gesellschaft? Verst{\"a}rkt der Zeitdruck die Tendenz zu Oberfl{\"a}chlichkeit und Kurzsichtigkeit? Welche Maßst{\"a}be f{\"u}r einen w{\"u}nschenswerten Umgang mit Zeit gibt es eigentlich? Unter welchen Voraussetzungen k{\"o}nnen M{\"u}ndigkeit und Menschenw{\"u}rde, Verantwortungsbereitschaft und Gemeinwohl, Zukunftskompetenz und Nachhaltigkeit wirklich heranreifen? Die Autoren mit unterschiedlichem professionellen Hintergrund aus Wissenschaft und Praxis zeichnen ein vielschichtiges und mehrdimensionales Bild des Faktors Zeit und diskutieren, was dieser f{\"u}r Bildung, Politik und politische Bildung bedeutet. (DIPF/Verlag).}, language = {de} } @inproceedings{Baumann, author = {Baumann, Timo}, title = {Feedback in Adaptive Interactive Storytelling}, series = {13th annual conference of the International Speech Communication Association 2012 (INTERSPEECH 2012): Portland, Oregon, USA, 9 - 13 September 2012, Interdisciplinary Workshop on Feedback Behaviors in Dialog}, booktitle = {13th annual conference of the International Speech Communication Association 2012 (INTERSPEECH 2012): Portland, Oregon, USA, 9 - 13 September 2012, Interdisciplinary Workshop on Feedback Behaviors in Dialog}, address = {Stevenson, USA}, isbn = {978-1-62276-759-5}, abstract = {Telling stories is different from reading out text: a speakerreponds to the listener's feedback and incorporates thisinto the ongoing talk. However, current computer sys-tems are unable to do this and instead just non-attentivelyread out a text, disregarding all feedback (or the absencethereof). I propose and discuss an idea for a small researchproject and a plan for how an attentive listening storytellercan be built.}, language = {en} } @book{Baumann, author = {Baumann, Timo}, title = {Incremental Spoken Dialogue Processing: Architecture and Lower-level Components}, publisher = {Bielefeld University}, isbn = {9783848200221}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:361-25819101}, pages = {176}, language = {en} } @incollection{ZilchFinckh, author = {Zilch, Konrad and Finckh, Wolfgang}, title = {Erweiterung der Verbundmodelle auf eingeschlitzte CFK-Bewehrung}, series = {Befestigungstechnik, Bewehrungstechnik und …}, booktitle = {Befestigungstechnik, Bewehrungstechnik und …}, publisher = {ibidem}, address = {Stuttgart}, isbn = {978-3-8982-1208-3}, language = {de} } @inproceedings{BaumannSchlangen, author = {Baumann, Timo and Schlangen, David}, title = {Inpro_iSS: A Component for Just-In-Time Incremental Speech Synthesis}, series = {The 13th Conference of the European Chapter of the Association for Computational Linguistics - proceedings of the System Demonstrations, April 23 - 27 2012, Avignon France}, booktitle = {The 13th Conference of the European Chapter of the Association for Computational Linguistics - proceedings of the System Demonstrations, April 23 - 27 2012, Avignon France}, publisher = {Association for Computational Linguistics (ACL)}, abstract = {We present a component for incremental speech synthesis (iSS) and a set of applications that demonstrate its capabilities. This component can be used to increase the responsivity and naturalness of spoken interactive systems. While iSS can show its full strength in systems that generate output incrementally, we also discuss how even otherwise unchanged systems may profit from its capabilities.}, language = {en} } @incollection{BresinskyDetjeLittschwager, author = {Bresinsky, Markus and Detje, Frank and Littschwager, Martin}, title = {Milit{\"a}r: Handeln in komplexen Problemlagen}, series = {Human Factors: Psychologie sicheren Handelns in Risikobranchen}, booktitle = {Human Factors: Psychologie sicheren Handelns in Risikobranchen}, editor = {Badke-Schaub, Petra and Hofinger, Gesine and Lauche, Kristina}, publisher = {Springer}, isbn = {978-3-642-19886-1}, doi = {10.1007/978-3-642-19886-1_15}, pages = {263 -- 274}, language = {en} } @inproceedings{BuschmeierBaumannDorschetal., author = {Buschmeier, Hendrik and Baumann, Timo and Dorsch, Benjamin and Kopp, Stefan and Schlangen, David}, title = {Combining Incremental Language Generation and Incremental Speech Synthesis for Adaptive Information Presentation}, series = {SIGDIAL '12: Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Seoul, South Korea, July 5 - 6, 2012}, booktitle = {SIGDIAL '12: Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Seoul, South Korea, July 5 - 6, 2012}, publisher = {Association for Computational Linguistics}, doi = {10.5555/2392800.2392852}, pages = {295 -- 303}, abstract = {Participants in a conversation are normally receptive to their surroundings and their interlocutors, even while they are speaking and can, if necessary, adapt their ongoing utterance. Typical dialogue systems are not receptive and cannot adapt while uttering. We present combin-able components for incremental natural lan-guage generation and incremental speech syn-thesis and demonstrate the flexibility they can achieve with an example system that adapts to a listener's acoustic understanding problems by pausing, repeating and possibly rephrasing problematic parts of an utterance. In an evaluation, this system was rated as significantly more natural than two systems representing the current state of the art that either ignore the interrupting event or just pause; it also has a lower response time.}, language = {en} } @incollection{LohmannEichhornBaumann, author = {Lohmann, Kris and Eichhorn, Ole and Baumann, Timo}, title = {Generating Situated Assisting Utterances to Facilitate Tactile-Map Understanding: A Prototype System}, series = {Proceedings of the Third Workshop on Speech and Language Processing for Assistive Technologies (SLPAT), Montreal, Canada, June 7-8, 2012}, booktitle = {Proceedings of the Third Workshop on Speech and Language Processing for Assistive Technologies (SLPAT), Montreal, Canada, June 7-8, 2012}, publisher = {Association for Computational Linguistics}, pages = {56 -- 65}, abstract = {Tactile maps are important substitutes for visual maps for blind and visually impaired people and the efficiency of tactile-map reading can largely be improved by giving assisting utterances that make use of spatial language. In this paper, we elaborate earlier ideas for a system that generates such utterances and present a prototype implementation based on a semantic conceptualization of the movements that the map user performs. A worked example shows the plausibility of the solution and the output that the prototype generates given input derived from experimental data.}, language = {en} } @article{NigelGWardVegaBaumann, author = {Nigel G. Ward, and Vega, Alejandro and Baumann, Timo}, title = {Prosodic and Temporal Features for Language Modeling for Dialog}, series = {Speech Communication}, volume = {54}, journal = {Speech Communication}, number = {2}, publisher = {ELSEVIER}, doi = {10.1016/j.specom.2011.07.009}, pages = {161 -- 174}, abstract = {If we can model the cognitive and communicative processes underlying speech, we should be able to better predict what a speaker will do. With this idea as inspiration, we examine a number of prosodic and timing features as potential sources of information on what words the speaker is likely to say next. In spontaneous dialog we find that word probabilities do vary with such features. Using perplexity as the metric, the most informative of these included recent speaking rate, volume, and pitch, and time until end of utterance. Using simple combinations of such features to augment trigram language models gave up to a 8.4\% perplexity benefit on the Switchboard corpus, and up to a 1.0\% relative reduction in word error rate (0.3\% absolute) on the Verbmobil II corpus.}, language = {en} } @inproceedings{PeldszusBussBaumannetal., author = {Peldszus, Andreas and Buß, Okko and Baumann, Timo and Schlangen, David}, title = {Joint Satisfaction of Syntactic and Pragmatic Constraints Improves Incremental Spoken Language Understanding}, series = {EACL 2012 Joint Workshop of LINGVIS \& UNCLH, Visualization of Linguistic Patterns and Uncovering Language History from Multilingual Resources, Proceedings of the Workshop, April 23 - 24 2012, Avignon France}, booktitle = {EACL 2012 Joint Workshop of LINGVIS \& UNCLH, Visualization of Linguistic Patterns and Uncovering Language History from Multilingual Resources, Proceedings of the Workshop, April 23 - 24 2012, Avignon France}, publisher = {The Association for Computational Linguistics}, isbn = {978-1-937284-19-0}, pages = {514 -- 523}, abstract = {We present a model of semantic processing of spoken language that (a) is robust against ill-formed input, such as can be expected from automatic speech recognisers, (b) respects both syntactic and pragmatic constraints in the computation of most likely interpretations, (c) uses a principled, expressive semantic representation formalism (RMRS) with a well-defined model theory, and (d) works continuously (producing meaning representations on a word-by-word basis, rather than only for full utterances) and incrementally (computing only the additional contribution by the new word, rather than re-computing for the whole utterance-so-far). We show that the joint satisfaction of syntactic and pragmatic constraints improves the performance of the NLU component (around 10 \% absolute, over a syntax-only baseline).}, language = {en} } @incollection{BaumannSchlangen, author = {Baumann, Timo and Schlangen, David}, title = {Evaluating Prosodic Processing for Incremental Speech Synthesis}, series = {Proceedings of Interspeech 2012}, booktitle = {Proceedings of Interspeech 2012}, publisher = {International Speech Communication Association}, doi = {10.21437/Interspeech.2012-152}, pages = {438 -- 441}, abstract = {Incremental speech synthesis (iSS) accepts input and produces output in consecutive chunks that only together result in a full utterance. Systems that use iSS thus have the ability to adapt their utterances while they are ongoing. Having available less than the full utterance to plan the acoustic realisation has downsides, however, as global optimisation is not possible anymore. In this paper we present a strategy for incrementalizing the symbolic pre-processing component of speech synthesis and assess the influence of a reduction in "lookahead", i. e. in knowledge about the rest of the utterance, on prosodic quality. We found that high quality incremental output can be achieved even with a lookahead of slightly less than one phrase, allowing for timely system reaction.}, language = {en} } @inproceedings{SchulzPutzgerNiklasetal., author = {Schulz, Irene and Putzger, J{\"u}rgen and Niklas, Andreas and Brandt, M. and J{\"a}ger, Andreas and Hardt, A. and Kn{\"o}rzer, S. and Hiller, Karl-Anton and L{\"o}ffler, S. and Schmalz, Gottfried and Danilov, Sergey N. and Giglberger, Stephan and Hirmer, Marion and Ganichev, Sergey D. and Monkman, Gareth J.}, title = {PPG signal acquisition and analysis on in vitro tooth model for dental pulp vitality assessmen}, series = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, booktitle = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, publisher = {Shaker-Verlag}, address = {Aachen}, organization = {ARC}, pages = {142 -- 146}, language = {en} } @article{ApelsmeierSchmaussShamoninChamonine, author = {Apelsmeier, Andreas and Schmauss, Bernhard and Shamonin (Chamonine), Mikhail}, title = {Compensation of parasitic losses in an extrinsic fiber-optic temperature sensor based on intensity measurement}, series = {Sensors and Actuators A: Physical}, volume = {173}, journal = {Sensors and Actuators A: Physical}, number = {1}, doi = {10.1016/j.sna.2011.10.015}, pages = {49 -- 54}, abstract = {A method of referencing in an extrinsic optical fiber sensor system utilizing temperature dependence of the absorption edge in a semiconductor crystal (semi-insulating iron-doped indium phosphide) is demonstrated. The intensity reference is provided by controlling the temperature of an LED source and transmission measurements with different emission spectra. A transient operation regime is introduced. The entire process is controlled by a microprocessor unit. The performance of the sensor system is investigated and it is shown that the connector losses may be compensated for. Contrary to the published works performed with GaAs crystals it was not observed that the absorption coefficient of the semiconductor follows the law for idealized direct-gap semiconductor but can be described by the so-called Urbach tail. Since the proposed sensor system comprises a single LED source, simple electronics and no optical fiber couplers it is promising for realization of low-cost fiber-optic temperature sensors, e.g. for power transformer monitoring or magnetic resonance imaging applications.}, language = {en} } @misc{Frikel, author = {Frikel, J{\"u}rgen}, title = {Adapted curvelet sparse regularization in limited angle tomography}, series = {Summer School: New Trends and Directions in Harmonic Analysis, Fractional Operator Theory, and Image Analysis, Inzell, Germany, September 17 - 21, 2012}, journal = {Summer School: New Trends and Directions in Harmonic Analysis, Fractional Operator Theory, and Image Analysis, Inzell, Germany, September 17 - 21, 2012}, language = {en} } @article{KnoedlerBuente, author = {Kn{\"o}dler, Christoph and B{\"u}nte, Rudolf}, title = {Die „Blaue Karte EU" - Neues zur Integration ausl{\"a}ndischer Arbeitnehmer in den deutschen Arbeitsmarkt}, series = {Neue Zeitschrift f{\"u}r Arbeitsrecht - NZA}, journal = {Neue Zeitschrift f{\"u}r Arbeitsrecht - NZA}, number = {22}, publisher = {C.H. Beck}, pages = {1255 -- 1259}, language = {de} }