TY - CHAP AU - Sureth-Sloane, Caren ED - Burr, Wolfgang ED - Wagenhofer, Alfred ID - 5066 T2 - Der Verband der Hochschullehrer für Betriebswirtschaft, Geschichte des VHB und Geschichten zum VHB TI - Vorwort. Geschichte des VHB und der BWL: Rückblick und Einblicke ER - TY - GEN AU - Sureth-Sloane, Caren AU - zu Knyphausen-Aufseß, Dodo ID - 5069 IS - 276 T2 - Frankfurter Allgemeine Zeitung TI - Welcher BWLer ist ein guter Forscher? ER - TY - JOUR AU - Gilroy, Bernard Michael AU - Kruse, Daniel ID - 5116 IS - 3 JF - WiSt-Wirtschaftswissenschaftliches Studium TI - Die Prinzipal-Agent-Theorie als Erklärungsinstrumentarium von Korruption VL - 41 ER - TY - JOUR AU - Bodden, Eric AU - Lam, Patrick AU - Hendren, Laurie ID - 5183 IS - 2 JF - ACM Transactions on Programming Languages and Systems SN - 0164-0925 TI - Partially Evaluating Finite-State Runtime Monitors Ahead of Time VL - 34 ER - TY - JOUR AB - We study the predictive ability of individual analyst target price changes for post-event abnormal stock returns within each recommendation category. Although prior studies generally demonstrate the investment value of target prices, we find that target price changes do not cause abnormal returns within each recommendation level. Instead, contradictory analyst signals (e.g., strong buy reiterations with large target price decreases) neutralize each other, whereas confirmatory signals reinforce each other. Further, our analysis reveals that large target price downgrades can be explained by preceding stock price decreases. However, upgrades are not preceded by stock price increases, thereby demonstrating asymmetric analyst behavior when adjusting target prices to stock prices. Our results suggest that investors should treat recommendations with caution when they are issued with large contradictory target price changes. Thus, instead of blindly following a recommendation, investors might put more weight on the change in the corresponding target price and consider transaction costs. AU - Kanne, Stefan AU - Klobucnik, Jan AU - Kreutzmann, Daniel AU - Sievers, Sönke ID - 5193 IS - 4 JF - Financial Markets and Portfolio Management (VHB-JOURQUAL 3 Ranking C) KW - Analyst recommendation KW - Target price KW - Stock performance KW - Trading strategy TI - To buy or not to buy? The value of contradictory analyst signals VL - 26 ER - TY - JOUR AB - This study shows how venture capital investors can identify potential biases in multi-year management forecasts before an investment decision and derive significantly more accurate failure predictions. By advancing a cross-sectional projection method developed by prior research and using firm-specific information in financial statements and business plans, we derive benchmarks for management revenue forecasts. With these benchmarks, we estimate forecast errors as an a priori measure of biased expectations. Using this measure for our proprietary dataset on venture-backed start-ups in Germany, we find evidence of substantial upward forecast biases. We uncover that firms with large forecast errors fail significantly more often than do less biased entrepreneurs in years following the investment. Overall, our results highlight the implications of excessive optimism and overconfidence in entrepreneurial environments and emphasize the relevance of accounting information and business plans for venture capital investment decisions. AU - Mokwa, Christopher Frederik AU - Sievers, Sönke ID - 5196 JF - SSRN Electronic Journal KW - Management forecast biases KW - cross-sectional projection models KW - venture-backed start-ups KW - failure prediction KW - overoptimism KW - overconfidence TI - The Relevance of Biases in Management Forecasts for Failure Prediction in Venture Capital Investments ER - TY - JOUR AB - This study provides evidence of significant biases in multi-year management forecasts by analyzing a proprietary dataset on venture-backed start-ups in Germany. We find that revenues and expenses are highly overestimated in each of the investigated one- to five-year-ahead planning periods. Furthermore, entrepreneurs underestimate one-year-ahead profit forecasts but clearly overestimate their profit forecasts for all longer-term forecast horizons. Additional analyses reveal that teams with prior management experience issue even more overestimated forecasts and misrepresent their forward-looking information. In contrast, greater asset verifiability and corporate lead investors are associated with lower levels of forecast errors. All key results hold if bias is either measured by traditionally comparing forecasts to ex-post realizations or by using a cross-sectional projection approach based on historical accounting data developed by prior research. AU - Mokwa, Christopher AU - Sievers, Sönke ID - 5198 JF - SSRN Electronic Journal KW - Management forecasts KW - Forecasting biases KW - Venture-backed start-ups KW - Projection methods TI - Biases in Management Forecasts of Venture-Backed Start-Ups: Evidence from Internal Due Diligence Documents of VC Investors ER - TY - CHAP AU - Schmitz, Hendrik AU - Eibich, P. AU - Ziebarth, N.R. ID - 5242 T2 - DIW Economic Bulletin TI - Add-On Premiums Increase Price Transparency: More Policy Holders Switch Health Plans VL - 2 ER - TY - JOUR AU - Schmitz, Hendrik AU - Augurzky, B. AU - Beivers, A. ID - 5243 JF - Krankenhaus-Report 2012 TI - Regionale Unterschiede in der stationären Versorgung: Das ländliche Krankenhaus im Fokus ER - TY - JOUR AU - Baum, M AU - Gsell, L AU - Kabst, Rüdiger ID - 5494 IS - 3 JF - Die Betriebswirtschaft (ZfB). TI - Determinanten des Employer Branding in deutschen Unternehmen: Ein neoinstitutionalistischer Erklärungsansatz. VL - 72 ER - TY - JOUR AU - Baum, M AU - Kabst, Rüdiger ID - 5496 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Die Wirkung von informellen und internetbasierten Rekrutierungskanälen auf den Rekrutierungserfolg: Eine empirische Analyse in kleinen und mittleren Unternehmen. VL - 3 ER - TY - JOUR AU - Maekelburger, B AU - Schwens, C AU - Kabst, Rüdiger ID - 5497 IS - 5 JF - Journal of International Business Studies (JIBS). TI - Asset Specificity and Foreign Market Entry Mode Choice of Small and Medium-Sized Enterprises: The Moderating Influence of Knowledge Safeguards and Institutional Safeguards. VL - 42 ER - TY - JOUR AU - Eberz, L M AU - Baum, M AU - Kabst, Rüdiger ID - 5498 IS - 1 JF - Zeitschrift für Personalforschung (ZfP). TI - Der Einfluss von Rekrutiererverhaltensweisen auf den Bewerber: Ein mediierter Prozess. VL - 26 ER - TY - JOUR AU - Wehner, M C AU - Kabst, Rüdiger AU - Meifert, M AU - Cunz, L M ID - 5508 IS - 9 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Der Personalverantwortliche als strategischer Partner: Persönliche Einstellung oder subjektive Norm? VL - 82 ER - TY - JOUR AU - Strohmeier, S AU - Kabst, Rüdiger ID - 5510 IS - 3 JF - International Journal of Business Information Systems (IJBIS). TI - Evaluating Major Human Resource Information Systems Design Characteristics: An Empirical Analysis. VL - 9 ER - TY - JOUR AU - Frese, M AU - Bausch, A AU - Schmidt, P AU - Rauch, A AU - Kabst, Rüdiger ID - 5512 IS - 1 JF - Foundations and Trends in Entrepreneurship. TI - Evidence-based entrepreneurship (EBE): Cumulative science, action principles, and bridging the gap between science and practice. VL - 8 ER - TY - JOUR AU - Wehner, M C AU - Giardini, A AU - Kabst, Rüdiger ID - 5515 IS - 4 JF - Human Resource Management. TI - Graduates’ Reactions to Recruitment Process Outsourcing: A Scenario-Based Study. VL - 51 ER - TY - JOUR AU - Eiche, J AU - Schwens, C AU - Kabst, Rüdiger ID - 5516 IS - 3 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Greenfield Investment versus Akquisition: Der moderierende Einfluss wahrgenommener institutioneller Unsicherheit bei der Internationalisierung von KMU. VL - 82 ER - TY - JOUR AU - Isidor, R AU - Schwens, C AU - Kabst, Rüdiger AU - Hornung, F ID - 5518 IS - 5 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Internationaler Joint Venture Erfolg: Eine Meta-Analyse. VL - 82 ER - TY - JOUR AU - Steinmetz, Holger AU - Isidor, R AU - Bäuerle, N ID - 5519 IS - 1 JF - Survey Research Methods TI - Testing the Circular Structure of Human Values: A Meta-Analytical Structural Equation Modelling Approach. VL - 6 ER - TY - JOUR AU - Wex, Felix AU - Schryen, Guido AU - Neumann, Dirk ID - 5578 IS - 3 JF - International Journal of Information Systems for Crisis Response and Management TI - A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty VL - 4 ER - TY - CONF AU - Wex, Felix AU - Schryen, Guido AU - Neumann, Dirk ID - 5579 T2 - International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012 TI - Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units ER - TY - CONF AU - Schryen, Guido AU - Wex, Felix ID - 5615 T2 - 45th Hawaii International Conference on System Sciences TI - IS Design Thinking in Disaster Management Research ER - TY - JOUR AU - Schryen, Guido ID - 5638 JF - Die Zeit TI - Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012) ER - TY - JOUR AU - Schryen, Guido ID - 5639 JF - IM Information Management & Consulting TI - Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear ER - TY - CONF AB - In model-driven development of multi-layer systems (e.g. application, platform and infrastructure), each layer is usually described by separate models. When generating analysis models or code, these separate models rst of all need to be linked. Hence, existing model transformations for single layers cannot be simply re-used. In this paper, we present a modular approach to the transformation of multi-layer systems. It employs model weaving to dene the interconnections between models of dierent layers. The weaving models themselves are subject to model transformations: The result of transforming a weaving model constitutes a conguration for the models obtained by transforming single layers, thereby allowing for a re-use of existing model transformations. We exemplify our approach by the generation of analysis models for component-based software. AU - Besova, Galina AU - Walther, Sven AU - Wehrheim, Heike AU - Becker, Steffen ID - 565 T2 - Proceedings of the 15th International Conference on Model Driven Engineering Languages & Systems (MoDELS) TI - Weaving-based configuration and modular transformation of multi-layer systems ER - TY - GEN AU - Hilger, Ina ID - 566 TI - Untersuchung von Modellen zur operativen Planung in Trinkwasserversorgungsnetzwerken ER - TY - CHAP AU - Kremer, H.-Hugo ED - Kremer, H.-H. ED - Beutner, M. ED - Zoyke, A. ID - 6463 T2 - Individuelle Förderung und berufliche Orientierung im berufsschulischen Übergangssystem - Ergebnisse aus dem Forschungs- und Entwicklungsprojekt InLab TI - Berufsorientierung im Übergang - Überlegungen zur curricularen Gestaltung der Bildungsarbeit im Übergangssystem ER - TY - JOUR AU - Tramm, T. AU - Seeber, S. AU - Kremer, H.-Hugo ID - 6519 IS - 22 JF - bwp@ Berufs- und Wirtschaftspädagogik - online TI - Funktionen und Erträge pädagogischer Diagnostik im wirtschafts- und berufspädagogischen Bereich (Editorial) ER - TY - JOUR AU - Büchter, K. AU - Frommberger, D. AU - Kremer, H.-Hugo ID - 6521 IS - 22 JF - bwp@ Berufs- und Wirtschaftspädagogik - online TI - Akademisierung der Berufsbildung - Editorial ER - TY - CONF AU - Böttcher, Stefan AU - Hartel, Rita AU - Heindorf, Stefan ID - 6720 T2 - ADC TI - Optimized XPath evaluation for Schema-compressed XML data VL - 124 ER - TY - JOUR AU - Chernilovskaya, A. AU - Gehrke, M. AU - van Rooijen, Lorijn ID - 6733 IS - 6 JF - Logic Journal of IGPL SN - 1367-0751 TI - Generalized Kripke semantics for the Lambek-Grishin calculus VL - 20 ER - TY - CONF AU - Böttcher, Stefan AU - Bokermann, Dennis AU - Hartel, Rita ID - 6742 SN - 9781467351522 T2 - 8th International Conference on Signal Image Technology and Internet Based Systems (SITIS'12) TI - Generalizing and Improving SQL/XML Query Evaluation ER - TY - BOOK ED - Tönnies, Merle ED - Buschmann, Heike ID - 6753 TI - Spatial Representations of British Identities ER - TY - JOUR AU - Tönnies, Merle ID - 6784 JF - Facteurs d'Identité / Faktoren der Identität TI - A Bricolage of Identities in Crisis. Colour Photography Documenting Northern England under Thatcher ER - TY - CONF AU - Leers, Mathias AU - Preiss, Alexander AU - Ferretti, Nicoletta AU - Krauter, Stefan ID - 6855 SN - 9781424499656 T2 - 2011 37th IEEE Photovoltaic Specialists Conference TI - Measurement of spectral-spatial distribution of global irradiance ER - TY - CONF AU - Krauter, Stefan AU - Lang, o. ID - 6892 T2 - 7th International Renewable Energy Storage Conference (IRES 2012), Berlin (Germany), 12.-14. November 2012 TI - Suitable test procedure for electrical energy storage in PV operation mode – implementation and implication ER - TY - CONF AU - Krauter, Stefan ID - 6893 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 4520-4522 TI - PV 3.0 ER - TY - CONF AU - Krauter, Stefan AU - Chen, S. ID - 6895 T2 - Proceedings of 6th International Photovoltaic Power Generation Conference SNEC 2012, Shanghai (China), 16.-18. June 2012 TI - Technical Assurance for High Reliable PV Modules via PI Testing ER - TY - JOUR AU - Krauter, Stefan ID - 6897 IS - April JF - PV Magazine April 2012 TI - Solar PV in Latin America. ER - TY - CONF AU - Koch, S. AU - Berghold, J. AU - Okoroafor, O. AU - Krauter, Stefan AU - Grunow, Paul ID - 6898 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 1991-1995 TI - Encapsulation influence on the potentialinduced degradation of crystalline silicon cells with selective emitter structures. ER - TY - CONF AU - Koch, S. AU - Nieschalk, D. AU - Berghold, J. AU - Wendlandt, S. AU - Krauter, Stefan AU - Grunow, Paul ID - 6899 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 1985-1990 TI - Potential induced degradation effects on crystalline silicon cells with various antireflection coatings ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Krauter, Stefan ID - 6901 T2 - Proceedings of the IRES 2012 (7th International Renewable Energy Storage Conference and Exhibition), Berlin, Germany, 12.-14. November 2012 TI - Storage System Strategies to optimize the Offshore-Wind Farm feed-in Fluctuations ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Navratil, Karl AU - Tigges, Martin ID - 6902 T2 - Proceedings of the DEWEK 2012 TI - Reduction of of Offshore-Wind power feed-in Fluctuations via Power to Gas Storage Systems ER - TY - CONF AU - Bouyraaman, Yassin AU - Thiele, C. AU - Krauter, Stefan ID - 6903 T2 - Zukunftsperspektiven für den Regelenergiemarkt Strom 2012 – IQPC, Berlin, Germany, August 2012 TI - Lösungsaspekte zur Weiterentwicklung des deutschen Regelenergiemarktes hinsichtlich der Integration erneuerbarer Energien. ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Krauter, Stefan ID - 6904 T2 - Proceedings of the WWEC 2012 (11th World Wind Energy Conference 2012), Bonn, Germany, Juli 2012 TI - Increased Availability of Offshore Wind Power by Storage System ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan AU - Bouyraaman, Yassin ID - 6905 T2 - Proceedings of the DEWEK 2012 TI - Analysis of Selected Offshore Fog Occurrences. ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan AU - Liebing, B. ID - 6906 T2 - Wissenschaftliche Verhandlungen 2012 der Deutschen Physikalischen Gesellschaft, Berlin, März 2012 TI - Analyse ausgewählter Nebelereignisse für Offshore-Standorte ER - TY - CONF AU - Bendfeld, Jörg ID - 6907 T2 - Wissenschaftliche Verhandlungen 2012 der Deutschen Physikalischen Gesellschaft, Berlin, März 2012 TI - Vergleich der Sichtweitenmesstechnik für den Offshore-Einsatz. ER - TY - CONF AU - Bendfeld, Jörg AU - Tigges, Martin ID - 6908 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Minimising Feed-in Fluctuaions of Offshore Wind Farms with Biogas fired Turbines ER - TY - CONF AU - Bendfeld, Jörg AU - Navratil, Karl ID - 6909 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Empowering Offshore Windfarms by Reliable Measurements ER - TY - CONF AU - Bendfeld, Jörg ID - 6910 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Cost effective Wave measurements for Ocean Energy. ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan ID - 6911 T2 - Proceedings of the DEWEK 2012 TI - Analysis of selected Offshore Fog Occurrences ER - TY - CONF AU - Bendfeld, Jörg ID - 6912 T2 - Proceedings of the DEWEK 2012 TI - Determination of the meteorological optical range in Offshore conditions. ER - TY - BOOK ED - Schmeisser, Wilhelm ED - Krimphove, Dieter ED - Zündorf, Horst ED - Toebe, Marc ED - Hannemann, Gerfried ID - 1643 TI - Finanzierung und Investition ER - TY - CHAP AU - Kempkes, Barbara AU - Meyer auf der Heide, Friedhelm ID - 16445 SN - 0302-9743 T2 - Experimental Algorithms TI - Continuous Local Strategies for Robotic Formation Problems ER - TY - CONF AU - Kempkes, Barbara AU - Kling, Peter AU - Meyer auf der Heide, Friedhelm ID - 16446 SN - 9781450312134 T2 - Proceedinbgs of the 24th ACM symposium on Parallelism in algorithms and architectures - SPAA '12 TI - Optimal and competitive runtime bounds for continuous, local gathering of mobile robots ER - TY - CHAP AU - Kempkes, Barbara AU - Meyer auf der Heide, Friedhelm ID - 16448 SN - 0302-9743 T2 - Algorithms for Sensor Systems TI - Local, Self-organizing Strategies for Robotic Formation Problems ER - TY - CHAP AU - Baier, Robert AU - Molo, Mirko Hessel-von ID - 16516 SN - 0302-9743 T2 - Large-Scale Scientific Computing TI - Newton’s Method and Secant Method for Set-Valued Mappings ER - TY - CHAP AU - Dellnitz, Michael AU - Dignath, Florian AU - Flaßkamp, Kathrin AU - Molo, Mirko Hessel-von AU - Krüger, Martin AU - Timmermann, Robert AU - Zheng, Qinghua ID - 16576 SN - 1612-3956 T2 - Mathematics in Industry TI - Modelling and Analysis of the Nonlinear Dynamics of the Transrapid and Its Guideway ER - TY - CONF AU - Flaskamp, K. AU - Ober-Blobaum, S. ID - 16589 SN - 9781457710964 T2 - 2012 American Control Conference (ACC) TI - Energy efficient control for mechanical systems based on inherent dynamical structures ER - TY - CONF AU - Flasskamp, Kathrin AU - Murphey, Todd AU - Ober-Blobaum, Sina ID - 16591 SN - 9781467320665 T2 - 2012 IEEE 51st IEEE Conference on Decision and Control (CDC) TI - Switching time optimization in discretized hybrid dynamical systems ER - TY - JOUR AU - Flaßkamp, Kathrin AU - Ober-Blöbaum, Sina AU - Kobilarov, Marin ID - 16592 JF - Journal of Nonlinear Science SN - 0938-8974 TI - Solving Optimal Control Problems by Exploiting Inherent Dynamical Systems Structures ER - TY - JOUR AU - Flaßkamp, Kathrin AU - Timmermann, Julia AU - Ober-Blöbaum, Sina AU - Dellnitz, Michael AU - Trächtler, Ansgar ID - 16593 JF - PAMM SN - 1617-7061 TI - Optimal Control on Stable Manifolds for a Double Pendulum ER - TY - JOUR AU - Froyland, Gary AU - Horenkamp, Christian AU - Rossi, Vincent AU - Santitissadeekorn, Naratip AU - Gupta, Alex Sen ID - 16603 JF - Ocean Modelling SN - 1463-5003 TI - Three-dimensional characterization and tracking of an Agulhas Ring ER - TY - JOUR AU - Meyer, A. ID - 16635 JF - IFAC Proceedings Volumes SN - 1474-6670 TI - Discontinuity Induced Bifurcations in Timed Continuous Petri Nets ER - TY - JOUR AU - Meyer, A. AU - Silva, M. ID - 16638 JF - IFAC Proceedings Volumes SN - 1474-6670 TI - Symmetry Reductions in Timed Continuous Petri Nets Under Infinite Server Semantics ER - TY - JOUR AU - Ringkamp, Maik AU - Ober-Blöbaum, Sina AU - Dellnitz, Michael AU - Schütze, Oliver ID - 16659 JF - Engineering Optimization SN - 0305-215X TI - Handling high-dimensional problems with multi-objective continuation methods via successive approximation of the tangent space ER - TY - CHAP AU - Dellnitz, Michael AU - Schütze, Oliver ID - 16681 SN - 9781461431275 T2 - Global Analysis of Nonlinear Dynamics TI - Multilevel Subdivision Techniques for Scalar Optimization Problems ER - TY - JOUR AU - Zanzottera, A. AU - Mingotti, G. AU - Castelli, R. AU - Dellnitz, M. ID - 16696 JF - Communications in Nonlinear Science and Numerical Simulation SN - 1007-5704 TI - Intersecting invariant manifolds in spatial restricted three-body problems: Design and optimization of Earth-to-halo transfers in the Sun–Earth–Moon scenario ER - TY - CONF AU - Domik, Gitta ID - 16929 T2 - Curated exhibit at Siggraph TI - Faculty Submitted Student Work at Siggraph 2012 ER - TY - CHAP AU - Dellnitz, Michael AU - Dignath, Florian AU - Flaßkamp, Kathrin AU - Molo, Mirko Hessel-von AU - Krüger, Martin AU - Timmermann, Robert AU - Zheng, Qinghua ID - 17035 SN - 1612-3956 T2 - Mathematics in Industry TI - Modelling and Analysis of the Nonlinear Dynamics of the Transrapid and Its Guideway ER - TY - JOUR AU - Huang, Lingling AU - Chen, Xianzhong AU - Mühlenbernd, Holger AU - Li, Guixin AU - Bai, Benfeng AU - Tan, Qiaofeng AU - Jin, Guofan AU - Zentgraf, Thomas AU - Zhang, Shuang ID - 1711 IS - 11 JF - Nano Letters SN - 1530-6984 TI - Dispersionless Phase Discontinuities for Controlling Light Propagation VL - 12 ER - TY - JOUR AU - Ye, Ziliang AU - Zhang, Shuang AU - Wang, Yuan AU - Park, Yong-Shik AU - Zentgraf, Thomas AU - Bartal, Guy AU - Yin, Xiaobo AU - Zhang, Xiang ID - 1712 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Mapping the near-field dynamics in plasmon-induced transparency VL - 86 ER - TY - JOUR AU - von Lucke, Jörn AU - Herzberg, Johann AU - Kluge, Ulrike AU - vom Brocke, Jan AU - Müller, Oliver AU - Zimmermann, Hans-Dieter ID - 17123 JF - SSRN Electronic Journal SN - 1556-5068 TI - Open Societal Innovation: The Alemannic Definition ER - TY - CONF AU - Janiesch, Christian AU - Fischer, Robin AU - Matzner, Martin AU - Müller, Oliver ID - 17124 SN - 9781450310673 T2 - Workshop on Middleware for Service Oriented Computing TI - Business activity management for service networks in cloud environments ER - TY - JOUR AU - Liu, Yongmin AU - Palomba, Stefano AU - Park, Yongshik AU - Zentgraf, Thomas AU - Yin, Xiaobo AU - Zhang, Xiang ID - 1713 IS - 9 JF - Nano Letters SN - 1530-6984 TI - Compact Magnetic Antennas for Directional Excitation of Surface Plasmons VL - 12 ER - TY - JOUR AU - Lanzillotti-Kimura, N. D. AU - Zentgraf, Thomas AU - Zhang, X. ID - 1714 IS - 4 JF - Physical Review B SN - 1098-0121 TI - Control of plasmon dynamics in coupled plasmonic hybrid mode microcavities VL - 86 ER - TY - JOUR AU - Ishikawa, Atsushi AU - Oulton, Rupert F. AU - Zentgraf, Thomas AU - Zhang, Xiang ID - 1715 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Slow-light dispersion by transparent waveguide plasmon polaritons VL - 85 ER - TY - CONF AU - Boschmann, Alexander AU - Platzner, Marco ID - 10636 T2 - Proc. IEEE Int. Conf. Eng. Med. Biolog. (EMBC) TI - Reducing classification accuracy degradation of pattern recognition based myoelectric control caused by electrode shift using a high density electrode array ER - TY - GEN AU - Dridger, Denis ID - 10650 TI - Design and Implementation of a Nanophotonics Simulation Personality for the Convey HC-1 Hybrid Core Computer ER - TY - THES AB - The paradigm shift towards many-core parallelism is accompanied by two fundamental questions: how should the many processors on a single die communicate to each other and what are suitable programming models for these novel architectures? In this thesis, the author tackles both questions by reviewing the reconfigurable mesh model of massively parallel computation for many-cores. The book presents the design, implementation and evaluation of a many-core architecture that is based on the execution principles and communication infrastructure of the reconfigurable mesh. This work fundamentally rests on FPGA implementations and shows that reconfigurable mesh processors with hundreds of autonomous cores are feasible. Several case studies demonstrate the effectiveness of programming and illustrate why the reconfigurable mesh is a promising model for many-cores. AU - Giefers, Heiner ID - 10652 SN - 978-3-8325-3165-2 TI - Design and Programming of Reconfigurable Mesh based Many-Cores ER - TY - GEN AU - Graf, Tobias ID - 10658 TI - Adaptive Playouts in der Monte-Carlo Spielbaumsuche am Anwendungsfall Go ER - TY - GEN AU - Hangmann, Hendrik ID - 10667 TI - Generating Adjustable Temperature Gradients on modern FPGAs ER - TY - JOUR AU - Kaufmann, Paul AU - Glette, Kyrre AU - Platzner, Marco AU - Torresen, Jim ID - 10685 IS - 4 JF - International Journal of Adaptive, Resilient and Autonomic Systems (IJARAS) TI - Compensating Resource Fluctuations by Means of Evolvable Hardware: The Run-Time Reconfigurable Functional Unit Row Classifier Architecture VL - 3 ER - TY - GEN AU - Platzner, Marco AU - Boschmann, Alexander AU - Kaufmann, Paul ID - 10723 TI - Wieder natürlich gehen und greifen ER - TY - GEN AU - Schmitz, Henning ID - 10734 TI - Stereo Matching on a HC-1 Hybrid Core Computer ER - TY - GEN AU - Topmöller, Christoph ID - 10747 TI - Entwicklung eines Picoblaze Compilers mit dem Gentle Compiler Construction System ER - TY - GEN AU - Wistuba, Martin ID - 10754 TI - Analysis of Pattern Based Model Design and Learning in Computer-Go ER - TY - CONF AU - Chinaev, Aleksej AU - Haeb-Umbach, Reinhold ID - 11741 T2 - Speech Communication; 10. ITG Symposium; Proceedings. TI - Quality Analysis and Optimization of the MAP-based Noise Power Spectral Density Tracker ER - TY - CONF AB - In this paper we present a novel noise power spectral density tracking algorithm and its use in single-channel speech enhancement. It has the unique feature that it is able to track the noise statistics even if speech is dominant in a given time-frequency bin. As a consequence it can follow non-stationary noise superposed by speech, even in the critical case of rising noise power. The algorithm requires an initial estimate of the power spectrum of speech and is thus meant to be used as a postprocessor to a first speech enhancement stage. An experimental comparison with a state-of-the-art noise tracking algorithm demonstrates lower estimation errors under low SNR conditions and smaller fluctuations of the estimated values, resulting in improved speech quality as measured by PESQ scores. AU - Chinaev, Aleksej AU - Krueger, Alexander AU - Tran Vu, Dang Hai AU - Haeb-Umbach, Reinhold ID - 11745 KW - MAP parameter estimation KW - noise power estimation KW - speech enhancement T2 - 37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012) TI - Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor ER - TY - CHAP AU - Krueger, Alexander AU - Haeb-Umbach, Reinhold ID - 11844 T2 - Techniques for Noise Robustness in Automatic Speech Recognition TI - Reverberant Speech Recognition ER - TY - CONF AB - In this contribution we investigate the effectiveness of Bayesian feature enhancement (BFE) on a medium-sized recognition task containing real-world recordings of noisy reverberant speech. BFE employs a very coarse model of the acoustic impulse response (AIR) from the source to the microphone, which has been shown to be effective if the speech to be recognized has been generated by artificially convolving nonreverberant speech with a constant AIR. Here we demonstrate that the model is also appropriate to be used in feature enhancement of true recordings of noisy reverberant speech. On the Multi-Channel Wall Street Journal Audio Visual corpus (MC-WSJ-AV) the word error rate is cut in half to 41.9 percent compared to the ETSI Standard Front-End using as input the signal of a single distant microphone with a single recognition pass. AU - Krueger, Alexander AU - Walter, Oliver AU - Leutnant, Volker AU - Haeb-Umbach, Reinhold ID - 11849 T2 - Proc. Interspeech TI - Bayesian Feature Enhancement for ASR of Noisy Reverberant Real-World Data ER - TY - JOUR AB - In this contribution, a new observation model for the joint compensation of reverberation and noise in the logarithmic mel power spectral density domain will be considered. The proposed observation model relates the noisy reverberant feature to the underlying sequence of clean speech features and the feature of the noise. Nevertheless, due to the complex interaction of these variables in the target domain, the observationmodel cannot be applied to Bayesian feature enhancement directly, calling for approximations that eventually render the observation model useful. The performance of the approximated observation model will highly depend on the capability of modeling the difference between the model and the noisy reverberant observation. A detailed analysis of this observation error will be provided in this work. Among others, it will point out the need to account for the instantaneous ratio of the reverberant speech power and the noise power. Index Terms: Bayesian feature enhancement, observation model for noisy reverberant speech AU - Leutnant, Volker AU - Krueger, Alexander AU - Haeb-Umbach, Reinhold ID - 11863 JF - Speech Communication; 10. ITG Symposium; Proceedings of TI - Investigations Into a Statistical Observation Model for Logarithmic Mel Power Spectral Density Features of Noisy Reverberant Speech ER - TY - CONF AB - In this work, an observation model for the joint compensation of noise and reverberation in the logarithmic mel power spectral density domain is considered. It relates the features of the noisy reverberant speech to those of the non-reverberant speech and the noise. In contrast to enhancement of features only corrupted by reverberation (reverberant features), enhancement of noisy reverberant features requires a more sophisticated model for the error introduced by the proposed observation model. In a first consideration, it will be shown that this error is highly dependent on the instantaneous ratio of the power of reverberant speech to the power of the noise and, moreover, sensitive to the phase between reverberant speech and noise in the short-time discrete Fourier domain. Afterwards, a statistically motivated approach will be presented allowing for the model of the observation error to be inferred from the error model previously used for the reverberation only case. Finally, the developed observation error model will be utilized in a Bayesian feature enhancement scheme, leading to improvements in word accuracy on the AURORA5 database. AU - Leutnant, Volker AU - Krueger, Alexander AU - Haeb-Umbach, Reinhold ID - 11864 KW - Robust Automatic Speech Recognition KW - Bayesian feature enhancement KW - observation model for reverberant and noisy speech T2 - Signal Processing, Communications and Computing (ICSPCC), 2012 IEEE International Conference on TI - A Statistical Observation Model For Noisy Reverberant Speech Features and its Application to Robust ASR ER - TY - GEN AU - Leutnant, Volker AU - Krueger, Alexander AU - Haeb-Umbach, Reinhold ID - 11865 TI - Derivation of the Power Compensation Constant in the Observation Model for Reverberant Speech in the Logarithmic Mel Power Spectral Domain ER - TY - CONF AU - Tran Vu, Dang Hai AU - Haeb-Umbach, Reinhold ID - 11910 T2 - International Workshop on Acoustic Signal Enhancement (IWAENC2012) TI - Exploiting Temporal Correlations in Joint Multichannel Speech Separation and Noise Suppression using Hidden Markov Models ER - TY - CONF AU - Eckhoff, D. 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