@inbook{1121, abstract = {{This paper presents a novel linguistic information extraction approach exploiting analysts’ stock ratings for statistical decision making. Over a period of one year, we gathered German stock analyst reports in order to determine market trends. Our goal is to provide business statistics over time to illustrate market trends for a user-selected company. We therefore recognize named entities within the very short stock analyst reports such as organization names (e.g. BASF, BMW, Ericsson), analyst houses (e.g. Gartner, Citigroup, Goldman Sachs), ratings (e.g. buy, sell, hold, underperform, recommended list) and price estimations by using lexicalized finite-state graphs, so-called local grammars. Then, company names and their acronyms respectively have to be cross-checked against data the analysts provide. Finally, all extracted values are compared and presented into charts with different views depending on the evaluation criteria (e.g. by time line). Thanks to this approach it will be easier and even more comfortable in the future to pay attention to analysts’ buy/sell signals without reading all their reports.}}, author = {{Lee, Yeong Su and Geierhos, Michaela}}, booktitle = {{Modeling and Using Context: 7th International and Interdisciplinary Conference, CONTEXT 2011, Karlsruhe, Germany, September 26-30, 2011, Proceedings}}, editor = {{Beigl, Michael and Christiansen, Henning and Roth-Berghofer, Thomas R. and Kofod-Petersen, Anders and Coventry, Kenny R. and Schmidtke, Hedda R.}}, isbn = {{9783642242786}}, location = {{Karlsruhe, Germany}}, pages = {{173--184}}, publisher = {{Springer}}, title = {{{Buy, Sell, or Hold? Information Extraction from Stock Analyst Reports}}}, doi = {{10.1007/978-3-642-24279-3_19}}, volume = {{6967}}, year = {{2011}}, } @inproceedings{1122, abstract = {{Within this paper, we will describe a new approach to customer interaction management by integrating social networking channels into existing business processes. Until now, contact center agents still read these messages and forward them to the persons in charge of customer’s in the company. But with the introduction of Web 2.0 and social networking clients are more likely to communicate with the companies via Facebook and Twitter instead of filling data in contact forms or sending e-mail requests. In order to maintain an active communication with international clients via social media, the multilingual consumer contacts have to be categorized and then automatically assigned to the corresponding business processes (e.g. technicalservice, shipping, marketing, and accounting). This allows the company to follow general trends in customer opinions on the Internet, but also record two-sided communication for customer relationship management.}}, author = {{Geierhos, Michaela and Lee, Yeong Su and Bargel, Matthias}}, booktitle = {{Multilingual Resources, Multilingual Applications: Proceedings of the Conference of the German Society for Computational Linguistics and Language Technology (GSCL) 2011}}, editor = {{Hedeland, Hanna and Schmidt, Thomas and Wörner, Kai}}, issn = {{0176-599X}}, keywords = {{Classification of Multilingual Customer Contacts, Contact Center Application Support, Social Media Business Integration}}, location = {{Hamburg, Germany}}, pages = {{219--222}}, publisher = {{University of Hamburg}}, title = {{{Processing Multilingual Customer Contacts via Social Media}}}, volume = {{96}}, year = {{2011}}, } @inproceedings{1123, abstract = {{Within this paper, we describe the special requirements of a semantic annotation scheme used for biographical event extraction in the framework of the Europeancollaborative research project Biographe. This annotationscheme supports interlingual search for people due to its multilingual support covering four languages such as English, German, French and Dutch.}}, author = {{Geierhos, Michaela and Bouraoui, Jean-Leon and Watrin, Patrick}}, booktitle = {{Multilingual Resources, Multilingual Applications. Proceedings of the Conference of the German Society for Computational Linguistics and Language Technology (GSCL) 2011}}, editor = {{Hedeland, Hanna and Schmidt, Thomas and Wörner, Kai}}, issn = {{0176-599X}}, keywords = {{Biographical Event Extraction for Interlingual People Search, Semantic Annotation Scheme}}, location = {{Hamburg, Germany}}, pages = {{45--50}}, publisher = {{University of Hamburg}}, title = {{{Towards Multilingual Biographical Event Extraction}}}, volume = {{96}}, year = {{2011}}, } @article{1125, abstract = {{Since customers first share their problems with a social networking community before directly addressing a company, social networking sites such as Facebook, Twitter, MySpace or Foursquare will be the interface between customer and company. For this reason, it is assumed that social networks will evolve into a common communication channel – not only between individuals but also between customers and companies. However, social networking has not yet been integrated into customer interaction management (CIM) tools. In general, a CIM application is used by the agents in a contact centre while communicating with the customers. Such systems handle communication across multiple different channels, such as e-mail, telephone, Instant Messaging, letter etc. What we do now is to integrate social networking into CIM applications by adding another communication channel. This allows the company to follow general trends in customer opinions on the Internet, but also record two-sided communication for customer service management and the company’s response will be delivered through the customer’s preferred social networking site.}}, author = {{Geierhos, Michaela}}, issn = {{17982340}}, journal = {{Journal of Advances in Information Technology}}, keywords = {{Social Media Business Integration, Multichannel Customer Interaction Management, Contact Centre Application Support}}, number = {{4}}, pages = {{222--233}}, publisher = {{Engineering and Technology Publishing (ETPub)}}, title = {{{Customer Interaction 2.0: Adopting Social Media as Customer Service Channel}}}, doi = {{10.4304/jait.2.4.222-233}}, volume = {{2}}, year = {{2011}}, } @article{20947, abstract = {{Alkylphosphonic acids of different alkyl chain lengths were adsorbed on electrochemically polished NiTi surfaces from ethanolic solutions. The electropolishing process led to passive films mainly composed of Ti-oxyhydroxide. The surface showed nanoscopic etching pits with a depths of about 2 nm and a diameter of about 20 nm. The interfacial binding mechanism of the phosphonic acid group to the oxyhydroxide surface and the ordering of the monolayer were spectroscopically analysed by means of infrared reflection absorption FTIR-spectroscopy with (PM-IRRAS) and without (IRRAS) photoelastic modulation. The comparison of IRRAS and PM-IRRAS data of the long chain octadecylphosphonic acid monolayer proved that the binding mechanism of the phosphonic acid group to the oxyhydroxide surface is based on a mono-or bidentate bond, which is not stable in the presence of high water activities. An alkyl chain length of 17 CH2 groups is required for the formation of self-assembled monolayers, which are stable in aqueous environments. These long chain aliphatic organophosphonic acid monolayers were shown to inhibit anodic and cathodic surface reactions. (C) 2010 Elsevier B.V. All rights reserved.}}, author = {{Maxisch, M. and Ebbert, Christoph and Torun, B. and Fink, N. and de los Arcos, T. and Lackmann, J. and Maier, H. J. and Grundmeier, Guido}}, issn = {{1873-5584}}, journal = {{APPLIED SURFACE SCIENCE}}, number = {{6}}, pages = {{2011--2018}}, title = {{{PM-IRRAS studies of the adsorption and stability of organophosphonate monolayers on passivated NiTi surfaces}}}, doi = {{10.1016/j.apsusc.2010.09.044}}, volume = {{257}}, year = {{2011}}, } @inproceedings{20958, abstract = {{Nowadays requirements are mostly specified in unrestricted natural language so that each stakeholder understands them. To ensure high quality and to avoid misunderstandings, the requirements have to be validated. Because of the ambiguity of natural language and the resulting absence of an automatic mechanism, this has to be done manually. Such manual validation techniques are timeconsuming, error-prone, and repetitive because hundreds or thousands of requirements must be checked. With an automatic validation the requirements engineering process can be faster and can produce requirements of higher quality. To realize an automatism, we propose a controlled natural language (CNL) for the documentation of requirements. On basis of the CNL, a concept for an automatic requirements validation is developed for the identification of inconsistencies and incomplete requirements. Additionally, automated correction operations for such defective requirements are presented. The approach improves the quality of the requirements and therefore the quality of the whole development process.}}, author = {{Holtmann, Jörg and Meyer, Jan and von Detten, Markus}}, booktitle = {{2011 IEEE Fourth International Conference on Software Testing, Verification and Validation Workshops}}, isbn = {{9781457700194}}, title = {{{Automatic Validation and Correction of Formalized, Textual Requirements}}}, doi = {{10.1109/icstw.2011.17}}, year = {{2011}}, } @inproceedings{20960, abstract = {{Heutige Steuergeraete im Automobilbereich zeichnen sich durch eine hohe Funktionsvielfalt und eine hohe Vernetzung untereinander aus. Dies fuehrt zu immer komplexeren Systemen, wobei auch immer mehr sicherheitskritische Funktionen durch Software realisiert werden. Damit die Qualitaet der Software entsprechend hoch und zufriedenstellend ist, erfordert die Entwicklung ein systematisches und prozesskonformes Vorgehen. Der fuer die Softwarearchitektur entwickelte AUTOSAR Standard ist allerdings nicht fuer die fruehen Entwicklungsphasen wie die Anforderungsanalyse und das Systemarchitekturdesign gedacht, welche von Prozessbewertungsmodellen – wie Automotive SPICE – gefordert werden. Als Loesung fuer die Analyse bietet sich die Nutzung der Systems Modeling Language (SysML) mit Anpassungen bzw. Erweiterungen an die Beduerfnisse der Automobilindustrie, an. Damit aber keine Luecke im Entwicklungsprozess entsteht, wird bei der hier vorgestellten Methode ein wohldefinierter uebergang zur AUTOSAR Architektur, und zwar zur Applikations- und zur Basissoftware, definiert. }}, author = {{Meyer, Jan and Holtmann, Jörg}}, booktitle = {{Tagungsband des Dagstuhl-Workshop MBEES: Modellbasierte Entwicklung eingebetteter Systeme VII}}, pages = {{21--30}}, publisher = {{fortiss GmbH}}, title = {{{Eine durchgängige Entwicklungsmethode von der Systemarchitektur bis zur Softwarearchitektur mit AUTOSAR}}}, year = {{2011}}, } @inproceedings{20975, abstract = {{Software maintenance tasks require knowledge about the software’s design. Several tools help to identify implementations of software patterns, e.g. Design Patterns, in source code and thus help to reveal the underlying design. In case of the reverse engineering tool suite Reclipse, detection algorithms are generated from manually created, formal pattern specifications. Due to numerous variants that have to be considered, the pattern specification is error-prone. Because of this, the complex, step-wise generation process has to be traceable backwards to identify specification mistakes. To increase the traceability, we directly interpret the detection algorithm models (story diagrams) instead of executing code generated from these models. This way, a reverse engineer no longer has to relate generated code to the story diagrams to find mistakes in pattern specifications. }}, author = {{Fockel, Markus and Travkin, Dietrich and von Detten, Markus}}, booktitle = {{Proceedings of the 8th International Fujaba Days}}, title = {{{Interpreting Story Diagrams for the Static Detection of Software Patterns}}}, year = {{2011}}, } @article{21045, author = {{Brecht, Benjamin and Eckstein, Andreas and Christ, Andreas and Suche, Hubertus and Silberhorn, Christine}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, title = {{{From quantum pulse gate to quantum pulse shaper—engineered frequency conversion in nonlinear optical waveguides}}}, doi = {{10.1088/1367-2630/13/6/065029}}, volume = {{13}}, year = {{2011}}, } @article{21046, author = {{Eckstein, Andreas and Brecht, Benjamin and Silberhorn, Christine}}, issn = {{1094-4087}}, journal = {{Optics Express}}, number = {{15}}, title = {{{A quantum pulse gate based on spectrally engineered sum frequency generation}}}, doi = {{10.1364/oe.19.013770}}, volume = {{19}}, year = {{2011}}, } @article{21047, author = {{Brecht, Benjamin and Eckstein, Andreas and Silberhorn, Christine}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{4}}, pages = {{1235--1238}}, title = {{{Controlling the correlations in frequency upconversion in PPLN and PPKTP waveguides}}}, doi = {{10.1002/pssc.201000872}}, volume = {{8}}, year = {{2011}}, } @inproceedings{21489, author = {{Hein, David and Meschut, Gerson and Hahn, Ortwin}}, booktitle = {{1. Fügetechnisches Gemeinschaftskolloquium}}, location = {{Garbsen}}, title = {{{Experimentelle Untersuchung und Simulation des Crashverhaltens mechanisch gefügter Verbindungen}}}, year = {{2011}}, } @article{1725, author = {{Liu, Ming and Yin, Xiaobo and Ulin-Avila, Erick and Geng, Baisong and Zentgraf, Thomas and Ju, Long and Wang, Feng and Zhang, Xiang}}, issn = {{0028-0836}}, journal = {{Nature}}, number = {{7349}}, pages = {{64--67}}, publisher = {{Springer Nature}}, title = {{{A graphene-based broadband optical modulator}}}, doi = {{10.1038/nature10067}}, volume = {{474}}, year = {{2011}}, } @article{1726, author = {{Utikal, Tobias and Zentgraf, Thomas and Paul, Thomas and Rockstuhl, Carsten and Lederer, Falk and Lippitz, Markus and Giessen, Harald}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{13}}, publisher = {{American Physical Society (APS)}}, title = {{{Towards the Origin of the Nonlinear Response in Hybrid Plasmonic Systems}}}, doi = {{10.1103/physrevlett.106.133901}}, volume = {{106}}, year = {{2011}}, } @article{1727, author = {{Valentine, Jason and Zhang, Shuang and Zentgraf, Thomas and Zhang, Xiang}}, issn = {{0018-9219}}, journal = {{Proceedings of the IEEE}}, number = {{10}}, pages = {{1682--1690}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Development of Bulk Optical Negative Index Fishnet Metamaterials: Achieving a Low-Loss and Broadband Response Through Coupling}}}, doi = {{10.1109/jproc.2010.2094593}}, volume = {{99}}, year = {{2011}}, } @article{1728, author = {{Zentgraf, Thomas and Liu, Yongmin and Mikkelsen, Maiken H. and Valentine, Jason and Zhang, Xiang}}, issn = {{1748-3387}}, journal = {{Nature Nanotechnology}}, number = {{3}}, pages = {{151--155}}, publisher = {{Springer Nature}}, title = {{{Plasmonic Luneburg and Eaton lenses}}}, doi = {{10.1038/nnano.2010.282}}, volume = {{6}}, year = {{2011}}, } @inbook{17317, author = {{Oevel, Gudrun and Toschläger, M.}}, booktitle = {{Prozessorientierte Hochschule}}, editor = {{Degkwitz, A. and Klapper, F.}}, publisher = {{Bock + Herchen}}, title = {{{Einführung eines prozessorientierten Campusmanagement an der Universität Paderborn – ein Erfahrungsbericht}}}, year = {{2011}}, } @inproceedings{17318, author = {{Brennecke, Andreas and Oevel, Gudrun and Strothmann, A.}}, booktitle = {{4. DFN-Forum Kommunikationstechnologien – Beiträge der Fachtagung 20./21.6.2011 Bonn}}, editor = {{Müller, P. and Neumair, B. and Dreo Rodosek, G.}}, location = {{Bonn}}, pages = {{69–78}}, publisher = {{Gesellschaft für Informatik}}, title = {{{Vom Studiolo zur virtuellen Forschungsumgebung}}}, volume = {{187}}, year = {{2011}}, } @inproceedings{17420, abstract = {{Occlusion culling is a common approach to accelerate real-time rendering of polygonal 3D-scenes by reducing the rendering load. Especially for large scenes, it is necessary to remove occluded objects to achieve a frame rate that provides an interactive environment. In order to benefit from the culling properly, often hierarchical data structures are used. These data structures typically create a spatial subdivision of a given scene into axis-aligned bounding boxes. These boxes can be tested quickly, but they are not very precise. By using these boxes, the included objects are detected as visible, even if other objects occlude them (false-positives). To get perfect results, the models’ original geometry included in the box has to be tested, but this would require too much computational power. To overcome this problem, original objects’ approximations could be used, but typical methods for mesh simplification cannot be applied, because they do not create an outer hull for a given object. We present a model simplification algorithm, which generates simple outer hulls, consisting of only few more triangles than a box, while preserving an object’s shape better than a corresponding bounding box. This approach is then extended to a hierarchical data structure, the so-called hull tree, that can be generated for a given scene to improve the visibility tests. Next, we present an approximative rendering algorithm, which combines the features of the hull tree with the use of inner hulls for efficient occlusion detection and global state-sorting of the visible objects. }}, author = {{Suess, Tim and Koch, Clemens and Jähn, Claudius and Fischer, Matthias}}, booktitle = {{Proceedings of the Graphics Interface 2011 Conference, May 25-27, St. John's, Newfoundland, Canada}}, editor = {{Brooks, Stephen and Irani, Pourang}}, pages = {{79----86}}, publisher = {{Canadian Human-Computer Communications Society}}, title = {{{Approximative occlusion culling using the hull tree}}}, year = {{2011}}, } @inproceedings{17421, author = {{Klaas, Alexander and Laroque, Christoph and Dangelmaier, Wilhelm and Fischer, Matthias}}, booktitle = {{Proceedings of the 2011 Winter Simulation Conference (WSC)}}, isbn = {{9781457721090}}, title = {{{Simulation aided, knowledge based routing for AGVs in a distribution warehouse}}}, doi = {{10.1109/wsc.2011.6147883}}, year = {{2011}}, }