TY - CONF AU - Bühmann, Lorenz AU - Usbeck, Ricardo AU - Ngonga Ngomo, Axel-Cyrille ED - Arenas, Marcelo ED - Corcho, Óscar ED - Simperl, Elena ED - Strohmaier, Markus ED - d'Aquin, Mathieu ED - Srinivas, Kavitha ED - Groth, Paul ED - Dumontier, Michel ED - Heflin, Jeff ED - Thirunarayan, Krishnaprasad ED - Staab, Steffen ID - 26448 T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {II} TI - ASSESS - Automatic Self-Assessment Using Linked Data VL - 9367 ER - TY - CONF AU - Winkelnkemper, Felix AU - Oberhoff, Andreas ED - wedge, Reinhard ED - Selke, Harald ID - 26449 TI - WebArena - R {\ "a} spacious structures for {\" u} r the learning locations of the future VL - 330 ER - TY - CONF AU - Marx, Edgard AU - Soru, Tommaso AU - Esteves, Diego AU - Ngonga Ngomo, Axel-Cyrille AU - Lehmann, Jens ED - Villata, Serena ED - Z. Pan, Jeff ED - Dragoni, Mauro ID - 26450 T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015 TI - An Open Question Answering Framework VL - 1486 ER - TY - CONF AU - Saleem, Muhammad AU - Intizar Ali, Muhammad AU - Hogan, Aidan AU - Mehmood, Qaiser AU - Ngonga Ngomo, Axel-Cyrille ED - Arenas, Marcelo ED - Corcho, Óscar ED - Simperl, Elena ED - Strohmaier, Markus ED - d'Aquin, Mathieu ED - Srinivas, Kavitha ED - Groth, Paul ED - Dumontier, Michel ED - Heflin, Jeff ED - Thirunarayan, Krishnaprasad ED - Staab, Steffen ID - 26451 T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {II} TI - LSQ: The Linked SPARQL Queries Dataset VL - 9367 ER - TY - CONF AU - Saleem, Muhammad AU - Intizar Ali, Muhammad AU - Hogan, Aidan AU - Mehmood, Qaiser AU - Ngonga Ngomo, Axel-Cyrille ED - Villata, Serena ED - Z. Pan, Jeff ED - Dragoni, Mauro ID - 26452 T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015 TI - The LSQ Dataset: Querying for Queries VL - 1486 ER - TY - CONF AU - Saleem, Muhammad AU - Mehmood, Qaiser AU - Ngonga Ngomo, Axel-Cyrille ED - Villata, Serena ED - Z. Pan, Jeff ED - Dragoni, Mauro ID - 26453 T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015 TI - Automatic SPARQL Benchmark Generation using FEASIBLE VL - 1486 ER - TY - CONF AU - Saveta, Tzanina AU - Daskalaki, Evangelia AU - Flouris, Giorgos AU - Fundulaki, Irini AU - Herschel, Melanie AU - Ngonga Ngomo, Axel-Cyrille ED - Arenas, Marcelo ED - Corcho, Óscar ED - Simperl, Elena ED - Strohmaier, Markus ED - d'Aquin, Mathieu ED - Srinivas, Kavitha ED - Groth, Paul ED - Dumontier, Michel ED - Heflin, Jeff ED - Thirunarayan, Krishnaprasad ED - Staab, Steffen ID - 26454 T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {I} TI - LANCE: Piercing to the Heart of Instance Matching Tools VL - 9366 ER - TY - CONF AU - Saveta, Tzanina AU - Daskalaki, Evangelia AU - Flouris, Giorgos AU - Fundulaki, Irini AU - Ngonga Ngomo, Axel-Cyrille ED - Villata, Serena ED - Z. Pan, Jeff ED - Dragoni, Mauro ID - 26456 T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015 TI - LANCE: A Generic Benchmark Generator for Linked Data VL - 1486 ER - TY - CONF AU - Soru, Tommaso AU - Marx, Edgard AU - Ngonga Ngomo, Axel-Cyrille ED - Villata, Serena ED - Z. Pan, Jeff ED - Dragoni, Mauro ID - 26457 T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015 TI - Enhancing Dataset Quality using Keys VL - 1486 ER - TY - CONF AU - M. Hassan, Mofeed AU - Lehmann, Jens AU - Ngonga Ngomo, Axel-Cyrille ED - Bizer, Christian ED - Auer, Sören ED - Berners-Lee, Tim ED - Heath, Tom ID - 26458 T2 - Proceedings of the Workshop on Linked Data on the Web, {LDOW} 2015, co-located with the 24th International World Wide Web Conference {(WWW} 2015), Florence, Italy, May 19th, 2015 TI - Interlinking: Performance Assessment of User Evaluation vs. Supervised Learning Approaches VL - 1409 ER - TY - CONF AU - Saveta, Tzanina AU - Daskalaki, Evangelia AU - Flouris, Giorgos AU - Fundulaki, Irini AU - Herschel, Melanie AU - Ngonga Ngomo, Axel-Cyrille ED - Gangemi, Aldo ED - Leonardi, Stefano ED - Panconesi, Alessandro ID - 26459 T2 - Proceedings of the 24th International Conference on World Wide Web Companion, {WWW} 2015, Florence, Italy, May 18-22, 2015 - Companion Volume TI - Pushing the Limits of Instance Matching Systems: A Semantics-Aware Benchmark for Linked Data ER - TY - CONF AU - Martin, Michael AU - Abicht, Konrad AU - Stadler, Claus AU - Ngonga Ngomo, Axel-Cyrille AU - Soru, Tommaso AU - Auer, Sören ED - Gangemi, Aldo ED - Leonardi, Stefano ED - Panconesi, Alessandro ID - 26460 T2 - Proceedings of the 24th International Conference on World Wide Web Companion, {WWW} 2015, Florence, Italy, May 18-22, 2015 - Companion Volume TI - CubeViz: Exploration and Visualization of Statistical Linked Data ER - TY - CONF AU - Soru, Tommaso AU - Marx, Edgard AU - Ngonga Ngomo, Axel-Cyrille ED - Gangemi, Aldo ED - Leonardi, Stefano ED - Panconesi, Alessandro ID - 26461 T2 - Proceedings of the 24th International Conference on World Wide Web, {WWW} 2015, Florence, Italy, May 18-22, 2015 TI - ROCKER: A Refinement Operator for Key Discovery ER - TY - CONF AU - Usbeck, Ricardo AU - Röder, Michael AU - Ngonga Ngomo, Axel-Cyrille AU - Baron, Ciro AU - Both, Andreas AU - Brümmer, Martin AU - Ceccarelli, Diego AU - Cornolti, Marco AU - Cherix, Didier AU - Eickmann, Bernd AU - Ferragina, Paolo AU - Lemke, Christiane AU - Moro, Andrea AU - Navigli, Roberto AU - Piccinno, Francesco AU - Rizzo, Giuseppe AU - Sack, Harald AU - Speck, René AU - Troncy, Raphaël AU - Waitelonis, Jörg AU - Wesemann, Lars ED - Gangemi, Aldo ED - Leonardi, Stefano ED - Panconesi, Alessandro ID - 26462 T2 - Proceedings of the 24th International Conference on World Wide Web, {WWW} 2015, Florence, Italy, May 18-22, 2015 TI - GERBIL: General Entity Annotator Benchmarking Framework ER - TY - CHAP AU - Lehmann, Jens AU - Athanasiou, Spiros AU - Both, Andreas AU - García-Rojas, Alejandra AU - Giannopoulos, Giorgos AU - Hladky, Daniel AU - Jay Le Grange, Jon AU - Ngonga Ngomo, Axel-Cyrille AU - Ahmed Sherif, Mohamed AU - Stadler, Claus AU - Wauer, Matthias AU - Westphal, Patrick AU - Zaslawski, Vadim ED - Narock, Tom ED - Fox, Peter ID - 26463 T2 - The Semantic Web in Earth and Space Science. Current Status and Future Directions TI - Managing Geospatial Linked Data in the GeoKnow Project VL - 20 ER - TY - JOUR AU - Böhm, Julian AU - Bellec, Matthieu AU - Mortessagne, Fabrice AU - Kuhl, Ulrich AU - Barkhofen, Sonja AU - Gehler, Stefan AU - Stöckmann, Hans-Jürgen AU - Foulger, Iain AU - Gnutzmann, Sven AU - Tanner, Gregor ID - 26493 JF - Physical Review Letters SN - 0031-9007 TI - Microwave Experiments Simulating Quantum Search and Directed Transport in Artificial Graphene ER - TY - JOUR AU - Schäfer, Rudi AU - Barkhofen, Sonja AU - Guhr, Thomas AU - Stöckmann, Hans-Jürgen AU - Kuhl, Ulrich ID - 26495 JF - Physical Review E SN - 1539-3755 TI - Compounding approach for univariate time series with nonstationary variances ER - TY - THES AU - Hallmann, Corinna ID - 265 TI - Optimierung von Wasserbehältern in einem Wasserversorgungssystem mittels einer Kombination aus Netzreduktion, mathematischer Optimierung und hydraulischer Simulation ER - TY - JOUR AU - Elster, Fabian AU - Barkhofen, Sonja AU - Nitsche, Thomas AU - Novotný, Jaroslav AU - Gábris, Aurél AU - Jex, Igor AU - Silberhorn, Christine ID - 26520 JF - Scientific Reports SN - 2045-2322 TI - Quantum walk coherences on a dynamical percolation graph ER - TY - BOOK ED - Keil, Reinhard ED - Selke, Harald ID - 26531 TI - 20 years of learning with the World Wide Web - technology and education in dialogue VL - 330 ER - TY - CONF AU - Keil, Reinhard AU - Selke, Harald ED - Keil, Reinhard ED - Selke, Harald ID - 26532 TI - Learn with, through and {\ "about the WWW VL - 330 ER - TY - CONF AU - Keil, Reinhard AU - Selke, Harald ED - Keil, Reinhard ED - Selke, Harald ID - 26533 TI - Virtual knowledge {\ "a} ume - From the presentation of content to virtual learning {\" a} tten VL - 330 ER - TY - THES AU - Klompmaker, Florian ID - 26534 TI - Development of a structured process of interaction design for {\ "u} r nat {\" u} local user interfaces ER - TY - CONF AB - Patterns serve to codify design knowledge. By embedding them in a hypothesis-driven design, it is possible to develop them further into sample languages. For this it is necessary to resolve the underlying conflicts in the form of design hypotheses and to validate them empirically in order to enable further use and generalization. In this article, an experiment is presented that describes this procedure and demonstrates the interplay between theory formation and codification of design knowledge using two examples. AU - Schild, Christian AU - Petrausch, Vanessa ID - 26536 T2 - Human and Computer 2015 - Proceedings TI - Empirical validation of design patterns ER - TY - CONF AB - Many markets have seen a shift from the idea of buying and moved to leasing instead. Arguably, the latter has been the major catalyst for their success. Ten years ago, research realized this shift and initiated the study of "online leasing problems" by introducing leasing to online optimization problems. Resources required to provide a service in an "online leasing problem" are no more bought but leased for different durations. In this paper, we provide an overview of results that contribute to the understanding of "online resource leasing problems". AU - Markarian, Christine AU - Meyer auf der Heide, Friedhelm ID - 266 T2 - Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC) TI - Online Resource Leasing ER - TY - CHAP AU - Hellmich, Frank AU - Görel, Gamze ED - Redlich, Hubertus ED - Schäfer, Lea ED - Wachtel, Grit ED - Zehbe, Katja ED - Moser, Vera ID - 26653 T2 - Veränderung und Beständigkeit in Zeiten der Inklusion. Perspektiven sonderpädagogischer Professionalisierung TI - Einstellungen von Grundschullehrkräften zum inklusiven Lernen in Abhängigkeit von dem Umfang an Erfahrungen aus dem Unterricht mit Kindern mit unterschiedlichen sonderpädagogischen Förderbedarfen ER - TY - THES AU - Markarian, Christine ID - 267 TI - Online Resource Leasing ER - TY - CHAP AU - Blumberg, Eva AU - Hellmich, Frank AU - Fromme, Theresa ED - Liebers, Katrin ED - Landwehr, Brunhild ED - Marquardt, Anne ED - Schlotter, Kezia ID - 26735 T2 - Lernprozessbegleitung und adaptives Lernen in der Grundschule. Forschungsbezogene Beiträge TI - Entwicklung naturwissenschaftlich-technischer Lehr-Lernangebote für inklusiven Sachunterricht ER - TY - CHAP AU - Ort, Margarita AU - Hellmich, Frank ED - Liebers, Katrin ED - Landwehr, Brunhild ED - Reinhold, Simone ED - Riegler, Susanne ED - Schmidt, Romina ID - 26736 T2 - Facetten grundschulpädagogischer und -didaktischer Forschung TI - Kausalattributionen von Leseerfolgen und Lesemisserfolgen bei Kindern im Leseunterricht der Grundschule ER - TY - CHAP AU - Hellmich, Frank ED - Kaiser, Astrid ID - 26739 T2 - Innovative Erhebungsmethoden – dargestellt an verschiedenen Forschungsprojekten TI - Lesestrategien und Leseerfolg bei Kindern im vierten Grundschuljahr – Analysen mit Fragebogen- und Beobachtungsverfahren ER - TY - GEN AU - Lange, Alexander ID - 268 TI - Online Bewertungssysteme – Ein systematischer Überblick ER - TY - JOUR AU - Klünder, Nina ID - 26881 IS - 1 JF - Hauswirtschaft und Wissenschaft TI - Gesellschaftliche und kulturelle Bedeutung von Mittagsverpflegung in Gießener Kindertagesstätten VL - 63 ER - TY - JOUR AU - Meier-Gräwe, Uta AU - Klünder, Nina ID - 26884 IS - 6 JF - KiTa aktuell TI - Verpflegung in Kindertagesstätten gestalten – Ergebnisse einer qualitativen Studie VL - 23 ER - TY - CONF AB - Proof-carrying hardware is an approach that has recently been proposed for the efficient verification of reconfigurable modules. We present an application of proof-carrying hardware to guarantee the correct functionality of dynamically reconfigured image processing modules. Our prototype comprises a reconfigurable-system-on-chip with an embedded virtual FPGA fabric. This setup allows us to leverage open source FPGA synthesis and backend tools to produce FPGA configuration bitstreams with an open format and, thus, to demonstrate and experimentally evaluate proof-carrying hardware at the bitstream level. AU - Wiersema, Tobias AU - Wu, Sen AU - Platzner, Marco ID - 269 T2 - Proceedings of the International Symposium in Reconfigurable Computing (ARC) TI - On-The-Fly Verification of Reconfigurable Image Processing Modules based on a Proof-Carrying Hardware Approach ER - TY - JOUR AU - Wright, C J AU - Atkinson, F S AU - Ramalingam, N AU - Buyken, Anette AU - Brand-Miller, J C ID - 26918 JF - European Journal of Clinical Nutrition SN - 0954-3007 TI - Effects of human milk and formula on postprandial glycaemia and insulinaemia ER - TY - JOUR AU - Goletzke, Janina AU - Buyken, Anette AU - Louie, Jimmy CY AU - Moses, Robert G AU - Brand-Miller, Jennie C ID - 26919 JF - The American Journal of Clinical Nutrition SN - 0002-9165 TI - Dietary micronutrient intake during pregnancy is a function of carbohydrate quality ER - TY - JOUR AU - Günther, Anke L. B. AU - Schulze, Matthias B. AU - Kroke, Anja AU - Diethelm, Katharina AU - Joslowski, Gesa AU - Krupp, Danika AU - Wudy, Stefan AU - Buyken, Anette ID - 26920 JF - Nutrition and Cancer SN - 0163-5581 TI - Early Diet and Later Cancer Risk: Prospective Associations of Dietary Patterns During Critical Periods of Childhood with the GH-IGF Axis, Insulin Resistance and Body Fatness in Younger Adulthood ER - TY - JOUR AB - AbstractThe growth hormone (GH) insulin-like growth factor (IGF) axis has been linked to insulin metabolism and cancer risk. Experimental evidence indicates that the GH–IGF axis itself can be influenced by dietary flavonoids. As fruit and vegetable (FV) intake is a major source of flavonoid consumption, FV’s beneficial health effects may be explained via flavonoids’ influence on the GH–IGF axis, but observational evidence is currently rare. We used data from Dortmund Nutritional and Anthropometric Longitudinally Designed Study participants to analyse prospective associations between FV, fruit intake and flavonoid intake from FV (FlavFV) with IGF-1 and its binding proteins IGFBP-2 and IGFBP-3. Subjects needed to provide a fasting blood sample in adulthood (18–39 years) and at least two 3-d weighed dietary records in early life (0·5−2 years,n191), mid-childhood (3−7 years,n265) or adolescence (girls: 9−15 years, boys: 10−16 years,n261). Additional analyses were conducted among those providing at least three 24-h urine samples in adolescence (n236) to address the predictor urinary hippuric acid (HA), a biomarker of polyphenol intake. Higher fruit intake in mid-childhood and adolescence was related to higher IGFBP-2 in adulthood (P=0·03 andP=0·045). Comparable trends (P=0·045−0·09) were discernable for FV intake (but not FlavFV) in all three time windows. Similarly, higher adolescent HA excretion tended to be related (P=0·06) to higher adult IGFBP-2 levels. Regarding IGFBP-3, a marginal (P=0·08) positive association was observed with FlavFV in mid-childhood only. None of the investigated dietary factors was related to IGF-1. In conclusion, higher fruit and FV intakes during growth may be relevant for adult IGFBP-2, but probably not for IGFBP-3 or IGF-1. AU - Krupp, Danika AU - Remer, Thomas AU - Penczynski, Katharina J. AU - Bolzenius, Katja AU - Wudy, Stefan A. AU - Buyken, Anette ID - 26921 JF - British Journal of Nutrition SN - 0007-1145 TI - Relevance of fruits, vegetables and flavonoids from fruits and vegetables during early life, mid-childhood and adolescence for levels of insulin-like growth factor (IGF-1) and its binding proteins IGFBP-2 and IGFBP-3 in young adulthood ER - TY - JOUR AU - Penczynski, Katharina J. AU - Krupp, Danika AU - Bring, Anna AU - Bolzenius, Katja AU - Remer, Thomas AU - Buyken, Anette ID - 26922 JF - European Journal of Nutrition SN - 1436-6207 TI - Relative validation of 24-h urinary hippuric acid excretion as a biomarker for dietary flavonoid intake from fruit and vegetables in healthy adolescents ER - TY - JOUR AB - We consider structural and algorithmic questions related to the Nash dynamics of weighted congestion games. In weighted congestion games with linear latency functions, the existence of pure Nash equilibria is guaranteed by a potential function argument. Unfortunately, this proof of existence is inefficient and computing pure Nash equilibria in such games is a PLS-hard problem even when all players have unit weights. The situation gets worse when superlinear (e.g., quadratic) latency functions come into play; in this case, the Nash dynamics of the game may contain cycles and pure Nash equilibria may not even exist. Given these obstacles, we consider approximate pure Nash equilibria as alternative solution concepts. A ρ--approximate pure Nash equilibrium is a state of a (weighted congestion) game from which no player has any incentive to deviate in order to improve her cost by a multiplicative factor higher than ρ. Do such equilibria exist for small values of ρ? And if so, can we compute them efficiently?We provide positive answers to both questions for weighted congestion games with polynomial latency functions by exploiting an “approximation” of such games by a new class of potential games that we call Ψ-games. This allows us to show that these games have d!-approximate pure Nash equilibria, where d is the maximum degree of the latency functions. Our main technical contribution is an efficient algorithm for computing O(1)-approximate pure Nash equilibria when d is a constant. For games with linear latency functions, the approximation guarantee is 3+√5/2 + Oγ for arbitrarily small γ > 0; for latency functions with maximum degree d≥ 2, it is d2d+o(d). The running time is polynomial in the number of bits in the representation of the game and 1/γ. As a byproduct of our techniques, we also show the following interesting structural statement for weighted congestion games with polynomial latency functions of maximum degree d ≥ 2: polynomially-long sequences of best-response moves from any initial state to a dO(d2)-approximate pure Nash equilibrium exist and can be efficiently identified in such games as long as d is a constant.To the best of our knowledge, these are the first positive algorithmic results for approximate pure Nash equilibria in weighted congestion games. Our techniques significantly extend our recent work on unweighted congestion games through the use of Ψ-games. The concept of approximating nonpotential games by potential ones is interesting in itself and might have further applications. AU - Caragiannis, Ioannis AU - Fanelli, Angelo AU - Gravin, Nick AU - Skopalik, Alexander ID - 320 IS - 1 JF - Transactions on Economics and Computation TI - Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure VL - 3 ER - TY - GEN AU - Eidens, Fabian ID - 321 TI - Anonymous credential system based on q-Strong Diffie-Hellman Assumption ER - TY - CONF AB - Reputation systems are used to compute and publish reputation scores for services or products. We consider reputation systems where users are allowed to rate products that they purchased previously. To obtain trustworthy reputations, they are allowed to rate these products only once. As long as users rate products once, they stay anonymous. Everybody is able to detect users deviating from the rate-products-only-once policy and the anonymity of such dishonest users can be revoked by a system manager. In this paper we present formal models for such reputation systems and their security. Based on group signatures presented by Boneh, Boyen, and Shacham we design an efficient reputation system that meets all our requirements. AU - Blömer, Johannes AU - Juhnke, Jakob AU - Kolb, Christina ID - 322 T2 - Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC) TI - Anonymous and Publicly Linkable Reputation Systems ER - TY - JOUR AB - On-the-fly composition of service-based software solutions is still a challenging task. Even more challenges emerge when facing automatic service composition in markets of composed services for end users. In this paper, we focus on the functional discrepancy between “what a user wants” specified in terms of a request and “what a user gets” when executing a composed service. To meet the challenge of functional discrepancy, we propose the combination of existing symbolic composition approaches with machine learning techniques. We developed a learning recommendation system that expands the capabilities of existing composition algorithms to facilitate adaptivity and consequently reduces functional discrepancy. As a representative of symbolic techniques, an Artificial Intelligence planning based approach produces solutions that are correct with respect to formal specifications. Our learning recommendation system supports the symbolic approach in decision-making. Reinforcement Learning techniques enable the recommendation system to adjust its recommendation strategy over time based on user ratings. We implemented the proposed functionality in terms of a prototypical composition framework. Preliminary results from experiments conducted in the image processing domain illustrate the benefit of combining both complementary techniques. AU - Jungmann, Alexander AU - Mohr, Felix ID - 323 IS - 1 JF - Journal of Internet Services and Applications TI - An approach towards adaptive service composition in markets of composed services ER - TY - CONF AB - Services are self-contained software components that can beused platform independent and that aim at maximizing software reuse. Abasic concern in service oriented architectures is to measure the reusabilityof services. One of the most important qualities is the functionalreusability, which indicates how relevant the task is that a service solves.Current metrics for functional reusability of software, however, have verylittle explanatory power and do not accomplish this goal.This paper presents a new approach to estimate the functional reusabilityof services based on their relevance. To this end, it denes the degreeto which a service enables the execution of other services as its contri-bution. Based on the contribution, relevance of services is dened as anestimation for their functional reusability. Explanatory power is obtainedby normalizing relevance values with a reference service. The applicationof the metric to a service test set conrms its supposed capabilities. AU - Mohr, Felix ID - 324 T2 - Proceedings of the 14th International Conference on Software Reuse (ICSR) TI - A Metric for Functional Reusability of Services ER - TY - GEN AU - Löken, Nils ID - 325 TI - A Group Signature Scheme with Distributed Group Management - An Application of Threshold Encryption ER - TY - GEN AU - Heihoff, Frederic ID - 326 TI - A group signature scheme based on the LSRW assumption ER - TY - JOUR AB - We consider the problem of resource discovery in distributed systems. In particular we give an algorithm, such that each node in a network discovers the address of any other node in the network. We model the knowledge of the nodes as a virtual overlay network given by a directed graph such that complete knowledge of all nodes corresponds to a complete graph in the overlay network. Although there are several solutions for resource discovery, our solution is the first that achieves worst-case optimal work for each node, i.e. the number of addresses (O(n)O(n)) or bits (O(nlog⁡n)O(nlog⁡n)) a node receives or sends coincides with the lower bound, while ensuring only a linear runtime (O(n)O(n)) on the number of rounds. AU - Kniesburges, Sebastian AU - Koutsopoulos, Andreas AU - Scheideler, Christian ID - 327 JF - Theoretical Computer Science TI - A deterministic worst-case message complexity optimal solution for resource discovery ER - TY - CONF AU - Beverungen, Daniel AU - Klör, Benjamin AU - Bräuer, Sebastian AU - Monhof, Markus ID - 3284 T2 - Proceedings of the Twenty-Third European Conference on Information Systems (ECIS 2015) TI - Will They Die Another Day? A Decision Support Perspective on Reusing Electric Vehicle Batteries ER - TY - CONF AU - Klör, Benjamin AU - Beverungen, Daniel AU - Bräuer, Sebastian AU - Plenter, Florian AU - Monhof, Markus ID - 3285 T2 - Proceedings of the Twenty-Third European Conference on Information Systems (ECIS 2015) TI - A Market for Trading Used Electric Vehicle Batteries — Theoretical Foundations and Information Systems ER - TY - JOUR AU - Gries, Thomas AU - Palnau, Irene ID - 3295 IS - 4 JF - Peace Economics, Peace Science and Public Policy TI - Sustaining Civil Peace: a configurational comparative analysis VL - 21 ER - TY - JOUR AU - Gries, Thomas AU - Meierrieks, Daniel AU - Redlin, Margarete ID - 3296 IS - 1 JF - Oxford Economic Papers TI - Oppressive Governments, Dependence on the United States and Anti-American Terrorism VL - 67 ER - TY - GEN AU - Fanasch, Patrizia ID - 3309 TI - Erfolg durch Persönlichkeit? Der Einfluss der Markenpersönlichkeit auf den Zusammenhang von Reputation und Unternehmenserfolg ER - TY - GEN AU - Walczok, Gregor Paul ID - 3310 TI - Die Veränderung des Mobilfunkmarktes durch die Discountanbieter ER - TY - JOUR AB - In this paper we consider an extended variant of query learning where the hidden concept is embedded in some Boolean circuit. This additional processing layer modifies query arguments and answers by fixed transformation functions which are known to the learner. For this scenario, we provide a characterization of the solution space and an ordering on it. We give a compact representation of the minimal and maximal solutions as quantified Boolean formulas and we adapt the original algorithms for exact learning of specific classes of propositional formulas. AU - Bubeck, Uwe AU - Kleine Büning, Hans ID - 3343 JF - Artificial Intelligence KW - Query learning KW - Propositional logic SN - 0004-3702 TI - Learning Boolean Specifications ER - TY - GEN AU - Knorr, Christoph ID - 3364 TI - Evaluation von Bildverarbeitungsalgorithmen in heterogenen Rechenknoten ER - TY - CONF AU - Klör, Benjamin AU - Bräuer, Sebastian AU - Beverungen, Daniel AU - Monhof, Markus ID - 3437 T2 - Proceedings of the 12. International Conference on Wirtschaftsinformatik 2015 (WI 2015) TI - A Domain-Specific Modeling Language for Electric Vehicle Batteries ER - TY - CONF AU - Monhof, Markus AU - Beverungen, Daniel AU - Klör, Benjamin AU - Bräuer, Sebastian ED - Donnellan, Brian ED - Helfert, Markus ED - Kenneally, Jim ED - VanderMeer, Debra ED - Rothenberger, Marcus ED - Winter, Robert ID - 3438 T2 - New Horizons in Design Science: Broadening the Research Agenda TI - Extending Battery Management Systems for Making Informed Decisions on Battery Reuse ER - TY - JOUR AU - Euler, Dieter AU - Sloane, Peter F. E. ID - 3556 IS - 1 JF - Zeitschrift für Berufs-und Wirtschaftspädagogik TI - Neue Bildungslandschaften - Kommunales Bildungsmanagement als Zukunftsaufgabe VL - 111 ER - TY - CHAP AU - Fischer, Christoph AU - Harteis, Christian ED - Niedermair, Gerhard ID - 3592 KW - Epistemische Überzeugungen KW - learning culture SN - 978-3-99033-403-4 T2 - Informelles Lernen, Annäherungen - Problemlagen - Forschungsbefunde TI - Die Bedeutung subjektiver Sichtweisen für die Implementierung betrieblicher Lernkultur ER - TY - JOUR AU - Harteis, Christian AU - Billett, Stephen AU - Goller, Michael AU - Rausch, Andreas AU - Seifried, J{\ ID - 3672 IS - 1 JF - International journal of training research TI - Effects of age, gender and occupation on perceived workplace learning support VL - 13 ER - TY - CHAP AU - Harteis, Christian ED - Rausch, Andreas ED - Warwas, Julia ED - Seifried, Jürgen ED - Wuttke, Eveline ID - 3692 T2 - Konzepte und Ergebnisse ausgewählter Forschungsfelder der beruflichen Bildung TI - Bedingungsfaktoren beruflichen Könnens ER - TY - CONF AU - Kiesel, Johannes AU - Al-Khatib, Khalid AU - Hagen, Matthias AU - Stein, Benno ID - 3782 T2 - Proceedings of the 2nd Workshop on Argumentation Mining TI - A Shared Task on Argumentation Mining in Newspaper Editorials ER - TY - CONF AU - Kiesel, Johannes AU - Al-Khatib, Khalid AU - Hagen, Matthias AU - Stein, Benno ID - 3808 T2 - Proceedings of the 2nd Workshop on Argumentation Mining TI - A Shared Task on Argumentation Mining in Newspaper Editorials ER - TY - CONF AU - Wachsmuth, Henning AU - Kiesel, Johannes AU - Stein, Benno ED - Tsujii, Junichi ED - Hajic, Jan ID - 3815 SN - 978-3-319-25740-2 T2 - Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing TI - Sentiment Flow - A General Model of Web Review Argumentation ER - TY - JOUR AB - The device principle of a prism-based on-chip spectrometer for TE polarization is introduced. The spectrometer exploits the modal dispersion in planar waveguides in a layout with slab regions having two different thicknesses of the guiding layer. The set-up uses parabolic mirrors, for the collimation of light of the input waveguide and focusing of the light to the receiver waveguides, which relies on total internal reflection at the interface between two such regions. These regions are connected adiabatically to prevent unwanted mode conversion and loss at the edges of the prism. The structure can be fabricated with two wet etching steps. The paper presents basic theory and a general approach for device optimization. The latter is illustrated with a numerical example assuming SiON technology. AU - Civitci, F. AU - Hammer, Manfred AU - Hoekstra, H.J.W.M. ID - 3845 JF - Optics Communications KW - tet_topic_waveguide SN - 0030-4018 TI - Planar prism spectrometer based on adiabatically connected waveguiding slabs VL - 365 ER - TY - JOUR AB - Sheets of slab waveguides with sharp corners are investigated. By means of rigorous numerical experiments, we look at oblique incidence of semi-guided plane waves. Radiation losses vanish beyond a certain critical angle of incidence. One can thus realize lossless propagation through 90-degree corner configurations, where the remaining guided waves are still subject to pronounced reflection and polarization conversion. A system of two corners can be viewed as a structure akin to a Fabry-Perot-interferometer. By adjusting the distance between the two partial reflectors, here the 90-degree corners, one identifies step-like configurations that transmit the semi-guided plane waves without radiation losses, and virtually without reflections. Simulations of semi-guided beams with in-plane wide Gaussian profiles show that the effect survives in a true 3-D framework. AU - Hammer, Manfred AU - Hildebrandt, Andre AU - Förstner, Jens ID - 3847 IS - 3 JF - Journal of Lightwave Technology KW - tet_topic_waveguide SN - 0733-8724 TI - Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence VL - 34 ER - TY - BOOK AU - Wachsmuth, Henning ID - 3879 SN - 978-3-319-25740-2 TI - Text Analysis Pipelines - Towards Ad-hoc Large-scale Text Mining ER - TY - JOUR AB - Plasmon modes of the exact same individual gold nanoprisms are investigated through combined nanometer-resolved electron energy-loss spectroscopy (EELS) and cathodoluminescence (CL) measurements. We show that CL only probes the radiative modes, in contrast to EELS, which additionally reveals dark modes. The combination of both techniques on the same particles thus provides complementary information and also demonstrates that although the radiative modes give rise to very similar spatial distributions when probed by EELS or CL, their resonant energies appear to be different. We trace this phenomenon back to plasmon dissipation, which affects in different ways the plasmon signatures probed by these techniques. Our experiments are in agreement with electromagnetic numerical simulations and can be further interpreted within the framework of a quasistatic analytical model. We therefore demonstrate that CL and EELS are closely related to optical scattering and extinction, respectively, with the addition of nanometer spatial resolution. AU - Losquin, Arthur AU - Zagonel, Luiz F. AU - Myroshnychenko, Viktor AU - Rodríguez-González, Benito AU - Tencé, Marcel AU - Scarabelli, Leonardo AU - Förstner, Jens AU - Liz-Marzán, Luis M. AU - García de Abajo, F. Javier AU - Stéphan, Odile AU - Kociak, Mathieu ID - 3892 IS - 2 JF - Nano Letters KW - tet_topic_plasmonics SN - 1530-6984 TI - Unveiling Nanometer Scale Extinction and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence Measurements VL - 15 ER - TY - JOUR AB - We show how to optically connect guiding layers at different elevations in a 3-D integrated photonic circuit. Transfer of optical power carried by planar, semi-guided waves is possible without reflections or radiation losses, and over large vertical distances. This functionality is realized through simple step-like folds of high-contrast dielectric slab waveguides, in combination with oblique wave incidence, and fulfilling a resonance condition. Radiation losses vanish, and polarization conversion is suppressed for TE wave incidence beyond certain critical angles. This can be understood by fundamental arguments resting on a version of Snell’s law. The two 90° corners of a step act as identical partial reflectors in a Fabry–Perot-like resonator setup. By selecting the step height, i.e., the distance between the reflectors, one realizes resonant states with full transmission. Rigorous quasi-analytical simulations for typical silicon/silica parameters demonstrate the functioning. Combinations of several step junctions can lead to other types of optical on-chip connects, e.g., U-turn- or bridge-like configurations. AU - Hammer, Manfred AU - Hildebrandt, Andre AU - Förstner, Jens ID - 3894 IS - 16 JF - Optics Letters KW - tet_topic_waveguide SN - 0146-9592 TI - How planar optical waves can be made to climb dielectric steps VL - 40 ER - TY - JOUR AB - We study the formation of subwavelength solitons in binary metal-dielectric lattices. We show that the transverse modulation of the lattice constant breaks the fundamental plasmonic band and suppresses the discrete diffraction of surface plasmon waves. New types of plasmonic solitons are found, and their characteristics are analyzed. We also demonstrate the existence of photonic-plasmonic vector solitons and elucidate their propagation properties. AU - Kou, Yao AU - Förstner, Jens ID - 3896 IS - 6 JF - Optics Letters KW - tet_topic_polariton SN - 0146-9592 TI - Subwavelength binary plasmonic solitons VL - 40 ER - TY - JOUR AB - The coherent state preparation and control of single quantum systems is an important prerequisite for the implementation of functional quantum devices. Prominent examples for such systems are semiconductor quantum dots, which exhibit a fine structure split single exciton state and a V-type three level structure, given by a common ground state and two distinguishable and separately excitable transitions. In this work we introduce a novel concept for the preparation of a robust inversion by the sequential excitation in a V-type system via distinguishable paths. AU - Mantei, D. AU - Förstner, Jens AU - Gordon, S. AU - Leier, Y. A. AU - Rai, A. K. AU - Reuter, Dirk AU - Wieck, A. D. AU - Zrenner, Artur ID - 3900 IS - 1 JF - Scientific Reports KW - tet_topic_qd SN - 2045-2322 TI - Robust Population Inversion by Polarization Selective Pulsed Excitation VL - 5 ER - TY - JOUR AB - Experience goods are characterised by information asymmetry and a lack of ex ante knowledge of product quality, such that reliable external signals of quality are likely to be highly valued. Two potentially credible sources of such information are reviews from professional critics and ‘word of mouth’ from other consumers. This paper makes a direct comparison between the relative influences and interactions of reviews from both of these sources on the sales performance of video game software. In order to empirically estimate and separate the effects of the two signals, we analyze a sample of 1480 video games and their sales figures between 2004 and 2010. We find evidence to suggest that even after taking steps to control for endogeneity, reviews from professional critics have a significantly positive influence on sales which outweighs that from consumer reviews. We also find evidence to suggest that reviews from professional critics also interact significantly with other signals of product quality. Consequently, we contend that professional critics adopt the role of an influencer, whereas word-of-mouth opinion acts more as a predictor of sales in the market for video games. AU - Cox, Joe AU - Kaimann, Daniel ID - 288 IS - 6 JF - Journal of Consumer Behaviour TI - How do reviews from professional critics interact with other signals of product quality? Evidence from the video game industry VL - 14 ER - TY - CONF AB - We examine the effect of the variance of consumer ratings on product pricing and sales using an analytical model, which considers goods that are characterized by experience attributes and informed search attributes (i.e., experience attributes that were transformed in search attributes by consumer ratings). For pure informed search goods, equilibrium price increases and demand decreases in variance. For pure experience goods, equilibrium price and demand decrease in variance. For hybrid goods with low total variance, equilibrium price and demand increase with an increasing relative share of variance caused by informed search attributes when the average rating and total variance of ratings are held constant. Hence, risk-averse consumers may prefer a more expensive good with a higher variance of ratings out of two similar goods with the same average rating. Moreover, our analytical model provides a theoretical foundation for the empirically observed j-shaped distribution of consumer ratings in electronic commerce. AU - Herrmann, Philipp AU - Kundisch, Dennis AU - Zimmermann, Steffen AU - Nault, Barry ID - 289 T2 - Proceedings of the 36th International Conference on Information Systems (ICIS), Fort Worth TI - How do Different Sources of the Variance of Consumer Ratings Matter? ER - TY - JOUR AB - Model transformation is a key concept in model-driven software engineering. The definition of model transformations is usually based on meta-models describing the abstract syntax of languages. While meta-models are thereby able to abstract from uperfluous details of concrete syntax, they often loose structural information inherent in languages, like information on model elements always occurring together in particular shapes. As a consequence, model transformations cannot naturally re-use language structures, thus leading to unnecessary complexity in their development as well as in quality assurance.In this paper, we propose a new approach to model transformation development which allows to simplify the developed transformations and improve their quality via the exploitation of the languages׳ structures. The approach is based on context-free graph grammars and transformations defined by pairing productions of source and target grammars. We show that such transformations have important properties: they terminate and are sound, complete, and deterministic. AU - Besova, Galina AU - Steenken, Dominik AU - Wehrheim, Heike ID - 290 JF - Computer Languages, Systems & Structures TI - Grammar-based model transformations: Definition, execution, and quality properties ER - TY - GEN AU - Börding, Paul ID - 291 TI - Fuzzy Matching von Vor- und Nachbedingungen in Servicespezikationen ER - TY - GEN AU - Osburg, Christina ID - 292 TI - Fusionen von gesetzlichen Krankenversicherungen zu den Effizienz- und Wechselwirkungen ER - TY - CHAP AU - Blazy, Olivier AU - Kakvi, Saqib AU - Kiltz, Eike AU - Pan, Jiaxin ID - 2921 SN - 0302-9743 T2 - Lecture Notes in Computer Science TI - Tightly-Secure Signatures from Chameleon Hash Functions ER - TY - CHAP AB - Opinion mining from physician rating websites depends on the quality of the extracted information. Sometimes reviews are user-error prone and the assigned stars or grades contradict the associated content. We therefore aim at detecting random individual error within reviews. Such errors comprise the disagreement in polarity of review texts and the respective ratings. The challenges that thereby arise are (1) the content and sentiment analysis of the review texts and (2) the removal of the random individual errors contained therein. To solve these tasks, we assign polarities to automatically recognized opinion phrases in reviews and then check for divergence in rating and text polarity. The novelty of our approach is that we improve user-generated data quality by excluding error-prone reviews on German physician websites from average ratings. AU - Geierhos, Michaela AU - Bäumer, Frederik Simon AU - Schulze, Sabine AU - Stuß, Valentina ED - Ali, Moonis ED - Kwon, Young Sig ED - Lee, Chang-Hwan ED - Kim, Juntae ED - Kim, Yongdai ID - 293 SN - 978-3-319-19065-5 T2 - Proceedings of the 28th International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems (IEA/AIE 2015) TI - Filtering Reviews by Random Individual Error VL - 9101 ER - TY - GEN AU - Materna, GinaJoanna ID - 294 TI - Fair Trade - Eine neue Perspektive in der internationalen Handelspolitik ER - TY - GEN AU - Goronczewski, Patricia ID - 295 TI - Fair Trade - An economic investigation of benefits and drawbacks ER - TY - GEN AU - Sosniak, Martin ID - 297 TI - Evaluation of Pairing Optimization for Embedded Platforms ER - TY - GEN AU - Plonka, Dennis ID - 298 TI - Entwicklung von Ablösesummen und Gehälter in der Fußball-Bundesliga - Salary Caps als mögliches Modell der Chancengleichheit ER - TY - GEN AU - Gerken, Britta ID - 299 TI - Elektromagnetische Seitenkanalangriffe auf paarungsbasierte Kryptographie ER - TY - BOOK ED - Betz, Stefan ID - 2992 TI - Ausgewählte Probleme des Logistikmanagements ER - TY - GEN AU - Neumann, Conrad ID - 300 TI - Ein Framework für Fuzzy Service Matching basierend auf Fuzzy Sets ER - TY - GEN AU - Bobolz, Jan ID - 301 TI - Efficient Verifier-Local Revocation for Anonymous Credentials ER - TY - GEN AU - Stroh, Christian ID - 302 TI - Efficient Attributes for Pairing-Based Anonymous Credentials ER - TY - THES AU - Koutsopoulos, Andreas ID - 304 TI - Dynamics and Efficiency in Topological Self-Stabilization ER - TY - THES AU - Kniesburges, Sebastian ID - 305 TI - Distributed Data Structures and the Power of topological Self-Stabilization ER - TY - GEN AU - Kunisch, Christina ID - 306 TI - Diffusion of Innovations in Social Networks ER - TY - GEN AU - Reimann, Alina ID - 308 TI - Die Wirksamkeit von Zertifikaten als Qualitätssignal ER - TY - GEN AU - Topal, Barlas ID - 309 TI - Die Einführung der EU-Merger Guidelines - Effizienz und Wohlfahrtswirkungen ER - TY - GEN AU - Bruns, Melanie ID - 310 TI - Design of an Evaluation Strategy for Fuzzy Service Matching ER - TY - GEN AU - Schleiter, Patrick ID - 312 TI - Constructions of Fully Secure Predicate Encryption Schemes ER - TY - JOUR AU - Böhl, Florian AU - Hofheinz, Dennis AU - Jager, Tibor AU - Koch, Jessica AU - Striecks, Christoph ID - 3120 IS - 1 JF - J. Cryptology TI - Confined Guessing: New Signatures From Standard Assumptions ER - TY - CONF AU - Jager, Tibor AU - Schwenk, Jörg AU - Somorovsky, Juraj ID - 3121 T2 - Proceedings of the 22nd ACM SIGSAC Conference on Computer and Communications Security, Denver, CO, USA, October 12-16, 2015 TI - On the Security of TLS 1.3 and QUIC Against Weaknesses in PKCS#1 v1.5 Encryption ER - TY - CONF AU - Jager, Tibor AU - Schwenk, Jörg AU - Somorovsky, Juraj ID - 3122 T2 - Computer Security - ESORICS 2015 - 20th European Symposium on Research in Computer Security, Vienna, Austria, September 21-25, 2015, Proceedings, Part I TI - Practical Invalid Curve Attacks on TLS-ECDH ER - TY - CONF AU - Heuer, Felix AU - Jager, Tibor AU - Kiltz, Eike AU - Schäge, Sven ID - 3123 T2 - Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings TI - On the Selective Opening Security of Practical Public-Key Encryption Schemes ER - TY - CONF AU - Bergsma, Florian AU - Jager, Tibor AU - Schwenk, Jörg ID - 3124 T2 - Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings TI - One-Round Key Exchange with Strong Security: An Efficient and Generic Construction in the Standard Model ER - TY - CONF AU - Jager, Tibor ID - 3125 T2 - Theory of Cryptography - 12th Theory of Cryptography Conference, TCC 2015, Warsaw, Poland, March 23-25, 2015, Proceedings, Part {II} TI - Verifiable Random Functions from Weaker Assumptions ER -