TY - JOUR AU - Trier, Matthias AU - Molka-Danielsen, Judith ID - 13255 JF - European Journal of Information Systems SN - 0960-085X TI - Sympathy or strategy: social capital drivers for collaborative contributions to the IS community ER - TY - CONF AB - challenge for the digital preservation community. While the methodological frameworks for selecting these properties provide a good foundation, a continued discussion is necessary for further clarifying and improving the available methods. This paper advances earlier work by building on the existing InSPECT framework and improving its capabilities of working with complex/compound objects like blogs. The modifications enable a more thorough analysis of object structures, accentuate the differences and similarities between the framework’s two streams of analysis (i.e. Object and Stakeholder analysis) and, subsequently, improve the final reformulation of the properties. To demonstrate the applicability of the modified framework, thepaper presents a use case of a blog preservation initiative that is informed by stakeholder interviews and evaluation of structural and technological foundations of blogs. It concludes by discussing the limitations of the approach and suggesting directions for future research. AU - Stepanyan, Karen AU - Gkotsis, George AU - Kalb, Hendrik AU - Kim, Yunhyong AU - Cristea, Alexandra I. AU - Joy, Mike AU - Trier, Matthias AU - Ross, Seamus ED - Moore, Reagan ED - Ashley, Kevin ED - Ross, Seamus ID - 13325 KW - Blogs KW - Weblogs KW - Digital Preservation KW - Significant Properties T2 - iPress 2012 TI - Blogs as Objects of Preservation: Advancing the Discussion on Significant Properties ER - TY - CONF AB - Communication within online social network applications enables users to express and share sentiments electronically. Existing studies examined the existence or distribution of sentiments in online communication at a general level or in small-observed groups. Our paper extends this research by analyzing sentiment exchange within social networks from an ego-network perspective. We draw from research on social influence and social attachment to develop theories of node polarization, balance effects and sentiment mirroring within communication dyads. Our empirical analysis covers a multitude of social networks in which the sentiment valence of all messages was determined. Subsequently we studied ego-networks of focal actors (ego) and their immediate contacts. Results support our theories and indicate that actors develop polarized sentiments towards individual peers but keep sentiment in balance on the ego-network level. Further, pairs of nodes tend to establish similar attitudes towards each other leading to stable and polarized positive or negative relationships AU - Hillmann, Robert AU - Trier, Matthias ED - Joshi, K.D. ED - Yoo, Youngjin ID - 13326 KW - Social Network Analysis KW - Ego-Network Analysis KW - Node Polarization KW - Sentiment Dissemination T2 - AMCIS 2012 Proceedings TI - Sentiment Polarization and Balance among Users in Online Social Networks VL - 24 ER - TY - CONF AB - Blogging has often been described as writing an online diary but, nowadays, it is more diverse and a considerable amount of blogs forms a common interconnected resource – the blogosphere – with comprehensive societal impact. While various studies have inquired social-psychological influenceson the intention to contribute to an individual blog, the perceptions related to creating such a common valuable good have not yet been focussed. Therefore, we introduce a new construct – the oeuvre of blogging – to better account for the notion of the blogosphere as a collective outcome. Furthermore, we propose a research model to inquire the influence of individual and collective beliefs on the oeuvre in comparison to short-term blogging activity. We conducted an online survey with 509 international distributed bloggers to test our model. The results of our study provide support for the importance of an oeuvre construct to explain influences on bloggers and blogging AU - Kalb, Hendrik AU - Trier, Matthias ED - Pries-Heje, Jan ED - Chiasson, Mike ED - Wareham, Jonathan ED - Busquets, Xavier ED - Valor, Josep ED - Seiber, Sandra ID - 13327 KW - Blog KW - Blogosphere KW - Collective benefit KW - PLS KW - Knowledge sharing T2 - ECIS 2012 Proceedings TI - The Blogosphere as Oeuvre: Individual and Collective Influence on Bloggers ER - TY - CONF AB - Communication in online social networks has been analyzed for some time regarding the expression of sentiments. So far, very little is known about the relationship between sentiments and network emergence, dissemination patternsand possible differences between positive and negative sentiments. The dissemination patterns analyzed in this study consist of network motifs based on triples of actors and the ties among them. These motifs are associated with common social network effects to derive meaningful insights about dissemination activities. The data basis includes several thousand social networks with textual messages classified according to embedded positive and negative sentiments. Based on this data, sub-networks are extracted and analyzed with a dynamic network motif analysis to determine dissemination patterns and associated network effects. Results indicate that the emergence of digital social networks exhibits a strong tendency towards reciprocity, followed by the dominance ofhierarchy as an intermediate step leading to social clustering with hubs and transitivity effects for both positive and negative sentiments to the same extend. Sentiments embedded in exchanged textual messages do only play a secondary role in network emergence and do not express differences regarding the emergence of network patterns. AU - Hillmann, Robert AU - Trier, Matthias ID - 13331 KW - Social Network Analysis KW - Dynamic Network Motif Analysis KW - Sentiment Dissemination KW - Networking Effects KW - Triads SN - 9780769547992 T2 - Proceedings of the 2012 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining TI - Dissemination Patterns and Associated Network Effects of Sentiments in Social Networks ER - TY - GEN AU - Lewis, Peter AU - Platzner, Marco AU - Yao, Xin ID - 13462 TI - An outlook for self-awareness in computing systems ER - TY - CHAP AU - Hüllermeier, Eyke ED - Trillas, E. ED - Bonissone, P.P. ED - Magdalena, L. ED - Kacprzyk, J. ID - 10153 T2 - Combining Experimentation and Theory TI - Fuzzy rules in data mining: From fuzzy associations to gradual dependencies VL - 271 ER - TY - JOUR AU - Brinkmann, Gunnar AU - Crevals, Simon AU - Melot, Hadrien AU - Rylands, Leanne J. AU - Steffen, Eckhard ID - 10170 JF - Discrete Mathematics. and Theoretical Computer Science TI - α-labelings and the structure of trees with nonzero α-deficit VL - 14.1 ER - TY - JOUR AU - Steffen, Eckhard ID - 10171 JF - Discrete Mathematics TI - Nearly nowhere-zero r-flow graphs VL - 312 ER - TY - JOUR AU - Mkrtchyan, Vahan AU - Steffen, Eckhard ID - 10172 JF - J. Graph Theory TI - Maximum Δ-edge-colorable subgraphs of class II graphs VL - 70 ER - TY - JOUR AU - Mkrtchyan, Vahan AU - Steffen, Eckhard ID - 10173 JF - Discrete Mathematics TI - Measures of edge-uncolorability VL - 312 ER - TY - JOUR AU - Schmidt, Christian AU - Breuer, Tobias AU - Wippermann, Stefan AU - Schmidt, Wolf Gero AU - Witte, Gregor ID - 13531 JF - The Journal of Physical Chemistry C SN - 1932-7447 TI - Substrate Induced Thermal Decomposition of Perfluoro-Pentacene Thin Films on the Coinage Metals VL - 116 ER - TY - JOUR AU - Wall, Simone AU - Krenzer, Boris AU - Wippermann, Stefan AU - Sanna, Simone AU - Klasing, Friedrich AU - Hanisch-Blicharski, Anja AU - Kammler, Martin AU - Schmidt, Wolf Gero AU - Horn-von Hoegen, Michael ID - 13534 IS - 18 JF - Physical Review Letters SN - 0031-9007 TI - Atomistic Picture of Charge Density Wave Formation at Surfaces VL - 109 ER - TY - JOUR AU - Sanna, S. AU - Schmidt, Wolf Gero ID - 13535 IS - 9 JF - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control SN - 0885-3010 TI - Ferroelectric phase transition in LiNbO3: Insights from molecular dynamics VL - 59 ER - TY - JOUR AU - Riefer, Arthur AU - Sanna, Simone AU - Gavrilenko, Alexander V. AU - Schmidt, Wolf Gero ID - 13536 IS - 9 JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control SN - 0885-3010 TI - Linear and nonlinear optical response of LiNbO3 calculated from first principles VL - 59 ER - TY - JOUR AU - Riefer, A. AU - Sanna, S. AU - Schmidt, Wolf Gero ID - 13538 IS - 12 JF - Physical Review B SN - 1098-0121 TI - Polarization-dependent methanol adsorption on lithium niobate Z-cut surfaces VL - 86 ER - TY - JOUR AU - Rode, S. AU - Hölscher, R. AU - Sanna, S. AU - Klassen, S. AU - Kobayashi, K. AU - Yamada, H. AU - Schmidt, Wolf Gero AU - Kühnle, A. ID - 13539 IS - 7 JF - Physical Review B SN - 1098-0121 TI - Atomic-resolution imaging of the polar (0001¯) surface of LiNbO3in aqueous solution by frequency modulation atomic force microscopy VL - 86 ER - TY - JOUR AU - Landmann, M. AU - Köhler, T. AU - Köppen, S. AU - Rauls, E. AU - Frauenheim, T. AU - Schmidt, Wolf Gero ID - 13541 IS - 6 JF - Physical Review B SN - 1098-0121 TI - Fingerprints of order and disorder in the electronic and optical properties of crystalline and amorphous TiO2 VL - 86 ER - TY - JOUR AU - Thissen, Peter AU - Peixoto, Tatiana AU - Longo, Roberto C. AU - Peng, Weina AU - Schmidt, Wolf Gero AU - Cho, Kyeongjae AU - Chabal, Yves J. ID - 13542 JF - Journal of the American Chemical Society SN - 0002-7863 TI - Activation of Surface Hydroxyl Groups by Modification of H-Terminated Si(111) Surfaces VL - 134 ER - TY - JOUR AU - Rauls, E. AU - Schmidt, Wolf Gero AU - Pertram, T. AU - Wandelt, K. ID - 13543 JF - Surface Science SN - 0039-6028 TI - Interplay between metal-free phthalocyanine molecules and Au(110) substrates VL - 606 ER - TY - JOUR AU - Landmann, M AU - Rauls, E AU - Schmidt, Wolf Gero ID - 13545 JF - Journal of Physics: Condensed Matter SN - 0953-8984 TI - The electronic structure and optical response of rutile, anatase and brookite TiO2 VL - 24 ER - TY - JOUR AU - Riefer, A. AU - Rauls, E. AU - Schmidt, Wolf Gero AU - Eberhard, J. AU - Stoll, I. AU - Mattay, J. ID - 13546 IS - 16 JF - Physical Review B SN - 1098-0121 TI - 2-Aminopyrimidine-silver(I) based organic semiconductors: Electronic structure and optical response VL - 85 ER - TY - JOUR AU - Thissen, Peter AU - Thissen, Vera AU - Wippermann, Stefan AU - Chabal, Yves J. AU - Grundmeier, Guido AU - Schmidt, Wolf Gero ID - 13548 JF - Surface Science SN - 0039-6028 TI - pH-dependent structure and energetics of H2O/MgO(100) VL - 606 ER - TY - JOUR AU - Hölscher, R. AU - Sanna, S. AU - Schmidt, Wolf Gero ID - 13560 IS - 6 JF - physica status solidi (c) SN - 1862-6351 TI - Adsorption of OH and H at the LiNbO3(0001) surface VL - 9 ER - TY - JOUR AU - Schmidt, Wolf Gero AU - Wippermann, S. AU - Sanna, S. AU - Babilon, M. AU - Vollmers, N. J. AU - Gerstmann, Uwe ID - 13820 IS - 2 JF - physica status solidi (b) SN - 0370-1972 TI - In-Si(111)(4 × 1)/(8 × 2) nanowires: Electron transport, entropy, and metal-insulator transition VL - 249 ER - TY - GEN AU - Ficara, Elena ID - 30162 T2 - Fichte-Studien TI - Forster, Michael, Kant and Skepticism, Princeton 2008 VL - 40 ER - TY - JOUR AU - Ficara, Elena ID - 30129 JF - Fichte-Studien TI - Skeptizismus und Philosophie bei Kant und Hegel VL - 39 ER - TY - BOOK ED - Ficara, Elena ID - 30078 TI - Skeptizismus und Philosophie. Kant, Fichte, Hegel. Fichte-Studien 39 ER - TY - CONF AU - Peters, Wilhelm AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 29600 T2 - IECON 2012-38th Annual Conference on IEEE Industrial Electronics Society TI - A precise open-loop torque control for an interior permanent magnet synchronous motor (IPMSM) considering iron losses ER - TY - JOUR AU - Schmitz, Hendrik ID - 3075 IS - 34 JF - Applied Economics TI - More health care utilization with more insurance coverage? Evidence from a latent class model with German data VL - 44 ER - TY - CONF AU - Figge, Heiko AU - Fröhleke, Norbert AU - Böcker, Joachim AU - Schafmeister, Frank ID - 30325 T2 - Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM) TI - Cost-Effective Implementation of a Digitally Controlled LLC Resonant Converter for Application in Server- and Telecom-PSUs ER - TY - JOUR AU - Schafmeister, Frank AU - Kolar, Johann ID - 30324 IS - 1 JF - IEEE Transactions on Power Electronics TI - Novel Hybrid Modulation Schemes Significantly Extending the Reactive Power Control Range of All Matrix Converter Topologies With Low Computational Effort VL - 59 ER - TY - CHAP AU - Kolar, Johann AU - Schafmeister, Frank ED - Schröder, Dierk ID - 30343 SN - 978-3-642-30103-2 T2 - Lehrbuch Leistungselektronische Schaltungen TI - Matrixkonverter, Kapitel 3.8 ER - TY - GEN AU - Schafmeister, Frank AU - Grote, Tobias ID - 30355 TI - Digital Slope Compensation for Current Mode Control ER - TY - CONF AU - Cao, Z. AU - Nzeugang, F. H. AU - Tao, J. AU - Fröhleke, N. AU - Böcker, Joachim ID - 30543 T2 - 21th IEEE International Symposium on Industrial Electronics (ISIE2012), Huangzhou, China TI - Novel dynamical modeling for series-parallel resonant converter ER - TY - CONF AU - Grote, T. AU - Bolte, S. AU - Fröhleke, N. AU - Böcker, Joachim ID - 30540 T2 - PCIM Europe Conference, Nürnberg, Germany, 2012 TI - Reduction of Total Harmonic Distortion (THD)for Interleaved Converters Operating in Discontinuous Conduction Mode (DCM) ER - TY - CONF AU - Böcker, Joachim AU - Sun, M. AU - Cao, Z. AU - Tong, L. AU - Zou, H. AU - Ranjan, P. ID - 30544 T2 - PCIM Europe Conference, Nürnberg, Germany TI - High Fidelity Hybrid Hardware-in-the-Loop Simulator with FPGA and Processor for AC Railway Traction ER - TY - CONF AU - Tao, J. AU - Cao, Z. AU - Sun, M. AU - Fröhleke, N. AU - Böcker, Joachim ID - 30545 T2 - PCIM Europe Conference, Nürnberg, Germany TI - Full Digital Implementation of an Optimized Modulation Strategy for Series-Parallel Resonant Converter ER - TY - CONF AU - Buchholz, O. AU - Mathapati, S. AU - Böcker, Joachim ID - 30541 T2 - PCIM Europe Conference, Nürnberg, Germany TI - Boosting Dynamics of AC Machines by using FPGA-Based Controls ER - TY - CHAP AB - Rezension: Zbl. Math. 1316.00023 (D. Bondoni) AU - Peckhaus, Volker ED - Dieks, Dennis ED - a., u. ID - 17617 T2 - Probabilities, Laws, and Structures TI - The Beginnings of Model Theory in the Algebra of Logic VL - 3 ER - TY - CHAP AU - Peckhaus, Volker ED - Béziau, Jean-Yves ED - Payette, Gillmann ID - 17621 T2 - The Square of Opposition. A General Framework of Cognition TI - Algebra of Logic, Quantification Theory, and the Square of Opposition ER - TY - CHAP AU - Peckhaus, Volker ED - Löffladt, Günter ID - 17622 T2 - Mathematik – Logik – Philosophie. Ideen und ihre historischen Wechselwirkungen TI - Lambert und die blinde Erkenntnis ER - TY - JOUR AU - Mathapati, Shashidhar AU - Böcker, Joachim ID - 30554 IS - 3 JF - IEEE Transactions on Industrial Electronics KW - Electrical and Electronic Engineering KW - Control and Systems Engineering SN - 0278-0046 TI - Analytical and Offline Approach to Select Optimal Hysteresis Bands of DTC for PMSM VL - 60 ER - TY - CHAP AB - Rezension: MR3642503 (V.V. Pambuccian); Zbl. Math. 1300.01020 (R.W. van der Waall) AU - Peckhaus, Volker ED - Krömer, Ralf ED - Chin-Drian, Yannick ID - 17623 T2 - New Essays on Leibniz Reception in Science and Philosophy of Science 1800–2000 TI - The Reception of Leibniz’s Logic in 19th Century German Philosophy ER - TY - CHAP AU - Peckhaus, Volker AU - Reuther, Thomas ED - Freese, Peter ID - 17624 T2 - 40 Jahre Universität Paderborn TI - 40 Jahre und kein bisschen leise … Eine kurze Geschichte der Paderborner Kulturwissenschaften ER - TY - CONF AU - Preckwinkel, Heiko AU - Krishna, DVMM AU - Fröhleke, Norbert AU - Böcker, Joachim ID - 30538 T2 - IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society TI - Photovoltaic inverter with high efficiency over a wide operation area - a practical approach ER - TY - CONF AU - Cao, Zhiyu AU - Tao, Junbing AU - Fröhleke, Norbert AU - Böcker, Joachim ID - 30550 T2 - IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society TI - Time-domain steady-state modeling of series-parallel resonant converter under optimized modulation ER - TY - CONF AU - Hu, Manli AU - Fröhleke, Norbert AU - Peters, Wilhelm AU - Böcker, Joachim ID - 30531 T2 - IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society TI - Multi-objective optimization of LCC resonant converter applied in VLF HV generator ER - TY - CONF AU - Cao, Zhiyu AU - Nzeugang, Franklin H. AU - Fröhleke, Norbert AU - Böcker, Joachim ID - 30533 T2 - IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society TI - A comparative study of series-parallel resonant converter by using different modulation strategies ER - TY - CONF AU - Solanki, Jitendra AU - Fröhleke, Norbert AU - Böcker, Joachim AU - Wallmeier, Peter ID - 30547 T2 - 2012 IEEE Energy Conversion Congress and Exposition (ECCE) TI - Analysis, design and control of 1MW, high power factor and high current rectifier system ER -