@techreport{2734, author = {{Gries, Thomas and Redlin, Margarete}}, pages = {{24}}, publisher = {{Paderborn University, CIE Center for International Economics}}, title = {{{Trade Openness and Economic Growth: A Panel Causality Analysis}}}, volume = {{2011-06}}, 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}}, } @inproceedings{5684, author = {{Lang, Fabian and Schryen, Guido and Fink, Andreas}}, booktitle = {{Proceedings of the 2011 International Conference on Information Systems (ICIS 2011)}}, title = {{{Automated Negotiations Under Uncertain Preferences}}}, year = {{2011}}, } @inproceedings{5689, author = {{Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}}, booktitle = {{Proceedings of the 19th European Conference on Information Systems (ECIS 2011)}}, title = {{{Reducing Datacenter Energy Usage through Efficient Job Allocation}}}, year = {{2011}}, } @inproceedings{5581, author = {{Wex, Felix and Schryen, Guido and Neumann, Dirk}}, booktitle = {{Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011)}}, title = {{{Intelligent Decision Support for Centralized Coordination during Emergency Response}}}, year = {{2011}}, } @inproceedings{5619, author = {{Schryen, Guido and Volkamer, Melanie and Ries, Sebastian}}, booktitle = {{Proceedings of the 26th Annual ACM Symposium on Applied Computing}}, title = {{{A formal approach towards measuring trust in distributed systems}}}, year = {{2011}}, } @article{5640, author = {{Schryen, Guido}}, journal = {{Communications of the ACM (CACM)}}, number = {{No. 5}}, pages = {{130--139}}, publisher = {{Association for Computing Machinery}}, title = {{{Is open source security a myth? What do vulnerability and patch data say?}}}, volume = {{Vol. 54}}, year = {{2011}}, } @inproceedings{5641, author = {{Schryen, Guido}}, booktitle = {{IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki}}, title = {{{Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation}}}, year = {{2011}}, } @inproceedings{11721, author = {{Bevermeier, Maik and Flanke, Stephan and Haeb-Umbach, Reinhold and Stehr, Jan}}, booktitle = {{International Workshop on Intelligent Transportation (WIT 2011)}}, title = {{{A Platform for efficient Supply Chain Management Support in Logistics}}}, year = {{2011}}, } @inproceedings{11845, abstract = {{The paper proposes a modification of the standard maximum a posteriori (MAP) method for the estimation of the parameters of a Gaussian process for cases where the process is superposed by additive Gaussian observation errors of known variance. Simulations on artificially generated data demonstrate the superiority of the proposed method. While reducing to the ordinary MAP approach in the absence of observation noise, the improvement becomes the more pronounced the larger the variance of the observation noise. The method is further extended to track the parameters in case of non-stationary Gaussian processes.}}, author = {{Krueger, Alexander and Haeb-Umbach, Reinhold}}, booktitle = {{IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011)}}, keywords = {{Gaussian processes, MAP-based estimation, maximum a posteriori method, maximum likelihood estimation, nonstationary Gaussian processes}}, pages = {{3596--3599}}, title = {{{MAP-based estimation of the parameters of non-stationary Gaussian processes from noisy observations}}}, doi = {{10.1109/ICASSP.2011.5946256}}, year = {{2011}}, } @article{11850, abstract = {{In this paper, we present a novel blocking matrix and fixed beamformer design for a generalized sidelobe canceler for speech enhancement in a reverberant enclosure. They are based on a new method for estimating the acoustical transfer function ratios in the presence of stationary noise. The estimation method relies on solving a generalized eigenvalue problem in each frequency bin. An adaptive eigenvector tracking utilizing the power iteration method is employed and shown to achieve a high convergence speed. Simulation results demonstrate that the proposed beamformer leads to better noise and interference reduction and reduced speech distortions compared to other blocking matrix designs from the literature.}}, author = {{Krueger, Alexander and Warsitz, Ernst and Haeb-Umbach, Reinhold}}, journal = {{IEEE Transactions on Audio, Speech, and Language Processing}}, keywords = {{acoustical transfer function ratio, adaptive eigenvector tracking, array signal processing, beamformer design, blocking matrix, eigenvalues and eigenfunctions, eigenvector-based transfer function ratios estimation, generalized sidelobe canceler, interference reduction, iterative methods, power iteration method, reduced speech distortions, reverberant enclosure, reverberation, speech enhancement, stationary noise}}, number = {{1}}, pages = {{206--219}}, title = {{{Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation}}}, doi = {{10.1109/TASL.2010.2047324}}, volume = {{19}}, year = {{2011}}, } @inproceedings{11866, abstract = {{In this work, a splitting and weighting scheme that allows for splitting a Gaussian density into a Gaussian mixture density (GMM) is extended to allow the mixture components to be arranged along arbitrary directions. The parameters of the Gaussian mixture are chosen such that the GMM and the original Gaussian still exhibit equal central moments up to an order of four. The resulting mixtures{\rq} covariances will have eigenvalues that are smaller than those of the covariance of the original distribution, which is a desirable property in the context of non-linear state estimation, since the underlying assumptions of the extended K ALMAN filter are better justified in this case. Application to speech feature enhancement in the context of noise-robust automatic speech recognition reveals the beneficial properties of the proposed approach in terms of a reduced word error rate on the Aurora 2 recognition task.}}, author = {{Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2011}}, title = {{{A versatile Gaussian splitting approach to non-linear state estimation and its application to noise-robust ASR}}}, year = {{2011}}, } @inproceedings{11911, abstract = {{In this paper we address the problem of initial seed selection for frequency domain iterative blind speech separation (BSS) algorithms. The derivation of the seeding algorithm is guided by the goal to select samples which are likely to be caused by source activity and not by noise and at the same time originate from different sources. The proposed algorithm has moderate computational complexity and finds better seed values than alternative schemes, as is demonstrated by experiments on the database of the SiSEC2010 challenge.}}, author = {{Tran Vu, Dang Hai and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2011}}, title = {{{On Initial Seed Selection for Frequency Domain Blind Speech Separation}}}, year = {{2011}}, } @book{11945, editor = {{Kolossa, Dorothea and Haeb-Umbach, Reinhold}}, publisher = {{Springer}}, title = {{{Robust Speech Recognition of Uncertain or Missing Data --- Theory and Applications}}}, year = {{2011}}, } @misc{35050, author = {{Süßmann, Johannes}}, booktitle = {{Bildung. Ziele und Formen, Traditionen und Systeme, Medien und Akteure}}, editor = {{Maaser, Michael and Walther, Gerrit}}, isbn = {{978-3-476-02098-7}}, pages = {{242–247}}, publisher = {{J.B. Metzler}}, title = {{{[Art.] Verwaltung}}}, doi = {{https://doi.org/10.1007/978-3-476-00131-3_54}}, year = {{2011}}, } @article{34951, author = {{Süßmann, Johannes}}, journal = {{politik und kultur}}, number = {{4}}, pages = {{22}}, title = {{{Heute würde Luther twittern. Reformation und Neue Medien}}}, year = {{2011}}, } @article{6091, abstract = {{In the present article, the role of endogenous feature-specific orienting for conscious and unconscious vision is reviewed. We start with an overview of orienting. We proceed with a review of masking research, and the definition of the criteria of experimental protocols that demonstrate endogenous and exogenous orienting, respectively. Against this background of criteria, we assess studies of unconscious orienting and come to the conclusion that so far studies of unconscious orienting demonstrated endogenous feature-specific orienting. The review closes with a discussion of the role of unconscious orienting in action control. (PsycINFO Database Record (c) 2016 APA, all rights reserved)}}, author = {{Ansorge, Ulrich and Horstmann, Gernot and Scharlau, Ingrid}}, issn = {{1895-1171}}, journal = {{Advances in Cognitive Psychology}}, keywords = {{visual input, awareness, conscious, orientation, visual perception, Awareness, Consciousness States, Perceptual Orientation, Visual Perception, Blindsight}}, number = {{2}}, pages = {{108 -- 119}}, title = {{{Top-down contingent feature-specific orienting with and without awareness of the visual input.}}}, volume = {{7}}, year = {{2011}}, } @article{6082, abstract = {{When two targets are presented in rapid succession, the first target (T1) is usually identified, but the second target (T2) is often missed. A remarkable exception to this 'attentional blink' occurs when T2 immediately follows the first T1, at lag 1. It is then often spared but reported in the wrong order—that is, before T1. These order reversals have led to the hypothesis that 'lag 1 sparing' occurs because the two targets merge into a single episodic representation. Here, we report evidence consistent with an alternative theory: T2 receives more attention than T1, leading to prior entry into working memory. Two experiments showed that the more T2 performance exceeded that for T1, the more order reversals were made. Furthermore, precuing T1 led to a shift in performance benefits from T2 to T1 and to an equivalent reduction in order reversals. We conclude that it is not necessary to assume episodic integration to explain lag 1 sparing or the accompanying order reversals. (PsycINFO Dat}}, author = {{Olivers, Christian N. L. and Hilkenmeier, Frederic and Scharlau, Ingrid}}, issn = {{1943-3921}}, journal = {{Attention, Perception, & Psychophysics}}, keywords = {{attentional blink, order reversals, prior entry, working memory, visual attention, attentional performance, Adolescent, Adult, Attention, Attentional Blink, Color Perception, Cues, Discrimination (Psychology), Female, Humans, Male, Memory, Short-Term, Pattern Recognition, Visual, Psychophysics, Reaction Time, Reversal Learning, Sensory Gating, Serial Learning, Young Adult, Eyeblink Reflex, Stimulus Change, Stimulus Parameters, Visual Attention, Attentional Blink, Short Term Memory}}, number = {{1}}, pages = {{53 -- 67}}, title = {{{Prior entry explains order reversals in the attentional blink.}}}, volume = {{73}}, year = {{2011}}, } @article{6084, abstract = {{Attended stimuli are perceived as occurring earlier than unattended stimuli. This phenomenon of prior entry is usually identified by a shift in the point of subjective simultaneity (PSS) in temporal order judgements (TOJs). According to its traditional psychophysical interpretation, the PSS coincides with the perception of simultaneity. This assumption is, however, questionable. Technically, the PSS represents the temporal interval between two stimuli at which the two alternative TOJs are equally likely. Thus it also seems possible that observers perceive not simultaneity, but uncertainty of temporal order. This possibility is supported by prior-entry studies, which find that perception of simultaneity is not very likely at the PSS. The present study tested the percept at the PSS in prior entry, using peripheral cues to orient attention. We found that manipulating attention caused varying temporal perceptions around the PSS. On some occasions observers perceived the two stimuli as sim}}, author = {{Weiß, Katharina and Scharlau, Ingrid}}, issn = {{1747-0218}}, journal = {{The Quarterly Journal of Experimental Psychology}}, keywords = {{temporal order perception, simultaneity, temporal order judgment, attention, visual perception, Adolescent, Adult, Attention, Cues, Discrimination (Psychology), Female, Humans, Judgment, Male, Models, Psychological, Photic Stimulation, Reaction Time, Time Factors, Uncertainty, Visual Perception, Young Adult, Attention, Judgment, Stimulus Similarity, Time Perception, Visual Discrimination, Temporal Order (Judgment)}}, number = {{2}}, pages = {{394 -- 416}}, title = {{{Simultaneity and temporal order perception: Different sides of the same coin? Evidence from a visual prior-entry study.}}}, volume = {{64}}, year = {{2011}}, }