@article{66798, abstract = {{Based on a nationally representative survey of 1,200 Mexicans aged 15 and older, the present article sets out to predict whether or not respondents possess intercultural capital in form of foreign language skills, friendships with foreigners, or time spent abroad. The corresponding logistic regression model reveals a panorama of striking differences in the likelihood of intercultural capital embodiment – between receivers and non-receivers of formal education, between the economically affluent and non-affluent, between internet users and non-users, and between men and women. The respective findings offer an empirically grounded critique of voluntarist notions of personal intercultural development. Most importantly perhaps, they raise the question as to how and for how long Mexico and other multicultural countries can afford to exclude important parts of their respective populations from the acquisition of intercultural capital in terms of foreign language skills, friendships with foreigners, and time spent abroad.}}, author = {{Pöllmann, Andreas}}, issn = {{2218-3620}}, journal = {{Universidad y Sociedad}}, number = {{5}}, pages = {{63--69}}, publisher = {{Editorial Universo Sur}}, title = {{{Predictors of intercultural capital embodiment in contemporary Mexico}}}, volume = {{9}}, year = {{2017}}, } @article{35, author = {{Linnenbank, Heiko and Grynko, Yevgen and Förstner, Jens and Linden, Stefan}}, issn = {{2047-7538}}, journal = {{Light: Science & Applications}}, keywords = {{tet_topic_opticalantenna, tet_topic_shg}}, number = {{1}}, pages = {{e16013}}, publisher = {{Springer Nature}}, title = {{{Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas}}}, doi = {{10.1038/lsa.2016.13}}, volume = {{5}}, year = {{2016}}, } @article{3841, abstract = {{We present phase sensitive cavity field measurements on photonic crystal microcavities. The experiments have been performed as autocorrelation measurements with ps double pulse laser excitation for resonant and detuned conditions. Measured E-field autocorrelation functions reveal a very strong detuning dependence of the phase shift between laser and cavity field and of the autocorrelation amplitude of the cavity field. The fully resolved phase information allows for a precise frequency discrimination and hence for a precise measurement of the detuning between laser and cavity. The behavior of the autocorrelation amplitude and phase and their detuning dependence can be fully described by an analytic model. Furthermore, coherent control of the cavity field is demonstrated by tailored laser excitation with phase and amplitude controlled pulses. The experimental proof and verification of the above described phenomena became possible by an electric detection scheme, which employs planar photonic crystal microcavity photo diodes with metallic Schottky contacts in the defect region of the resonator. The applied photo current detection was shown to work also efficiently at room temperature, which make electrically contacted microcavities attractive for real world applications.}}, author = {{Quiring, Wadim and Jonas, Björn and Förstner, Jens and Rai, Ashish K. and Reuter, Dirk and Wieck, Andreas D. and Zrenner, Artur}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{tet_topic_phc}}, number = {{18}}, pages = {{20672--20684}}, publisher = {{The Optical Society}}, title = {{{Phase sensitive properties and coherent manipulation of a photonic crystal microcavity}}}, doi = {{10.1364/oe.24.020672}}, volume = {{24}}, year = {{2016}}, } @article{3884, abstract = {{e study the discrete soliton formation in one- and two- dimensional arrays of nanowires coated with graphene monolayers. Highly confined solitons, including the fundamental and the higher-order modes, are found to be supported by the proposed structure with a low level of power flow. Numerical analysis reveals that, by tuning the input intensity and Fermi energy, the beam diffraction, soliton dimension and propagation loss can be fully controlled in a broad range, indicating potential values of the graphene-based solitons in nonlinear/active nanophotonic systems. }}, author = {{Kou, Yao and Förstner, Jens}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{tet_topic_plasmonics, tet_topic_polariton}}, number = {{5}}, pages = {{4714}}, publisher = {{The Optical Society}}, title = {{{Discrete plasmonic solitons in graphene-coated nanowire arrays}}}, doi = {{10.1364/oe.24.004714}}, volume = {{24}}, year = {{2016}}, } @unpublished{2969, author = {{Blömer, Johannes and Brauer, Sascha and Bujna, Kathrin}}, publisher = {{Computing Research Repository}}, title = {{{Hard-Clustering with Gaussian Mixture Models}}}, year = {{2016}}, } @inproceedings{1151, abstract = {{Welche Informationen über Unternehmenszusammenschlüsse werden in Zeitungsnachrichten vermittelt, und wie können diese Informationen automatisch extrahiert werden? Dies soll am Beispiel des Verhaltens von Aktionären während eines Zusammenschlusses ermittelt werden. Dazu werden die wichtigsten Aussagen über das Votum der Aktionäre im Hinblick auf eine automatische Erkennung sprachlich analysiert. Im Fokus stehen dabei die Berichte über Aktionärsabstimmungen hinsichtlich der Annahme bzw. Ablehnung eines Übernahmeangebots.}}, author = {{Stotz, Sophia and Geierhos, Michaela}}, booktitle = {{DHd 2016: Modellierung - Vernetzung - Visualisierung. Die Digital Humanities als fächerübergreifendes Forschungsparadigma. Konferenzabstracts, Universität Leipzig, 7. bis 12. März 2016}}, isbn = {{978-3-941379-05-3}}, location = {{Leipzig, Germany}}, pages = {{378--381}}, publisher = {{Nisaba-Verlag}}, title = {{{Wie verhalten sich Aktionäre bei Unternehmenszusammenschlüssen? Modellierung sprachlicher Muster zur Analyse treibender Faktoren bei der Berichterstattung}}}, year = {{2016}}, } @misc{1152, author = {{Geierhos, Michaela}}, booktitle = {{Enzyklopädie der Wirtschaftsinformatik}}, editor = {{Gronau, Norbert and Becker, Jörg and Sinz, Elmar and Suhl, Leena and Leimeister, Jan M.}}, keywords = {{Webmonitoring}}, publisher = {{GITO-Verlag}}, title = {{{Webmonitoring}}}, year = {{2016}}, } @misc{1153, author = {{Geierhos, Michaela}}, booktitle = {{Enzyklopädie der Wirtschaftsinformatik}}, editor = {{Gronau, Norbert and Becker, Jörg and Sinz, Elmar and Suhl, Leena and Leimeister, Jan M.}}, keywords = {{Sentimentanalyse}}, publisher = {{GITO-Verlag}}, title = {{{Sentimentanalyse}}}, year = {{2016}}, } @misc{1154, author = {{Geierhos, Michaela}}, booktitle = {{Enzyklopädie der Wirtschaftsinformatik}}, editor = {{Gronau, Norbert and Becker, Jörg and Sinz, Elmar and Suhl, Leena and Leimeister, Jan M.}}, keywords = {{Text Mining}}, publisher = {{GITO-Verlag}}, title = {{{Text Mining}}}, year = {{2016}}, } @misc{1155, author = {{Geierhos, Michaela}}, booktitle = {{Enzyklopädie der Wirtschaftsinformatik}}, editor = {{Gronau, Norbert and Becker, Jörg and Sinz, Elmar and Suhl, Leena and Leimeister, Jan M.}}, keywords = {{Crawler}}, publisher = {{GITO-Verlag}}, title = {{{Crawler (fokussiert / nicht fokussiert)}}}, year = {{2016}}, } @inproceedings{176, abstract = {{Users prefer natural language software requirements because of their usability and accessibility. When they describe their wishes for software development, they often provide off-topic information. We therefore present an automated approach for identifying and semantically annotating the on-topic parts of the given descriptions. It is designed to support requirement engineers in the requirement elicitation process on detecting and analyzing requirements in user-generated content. Since no lexical resources with domain-specific information about requirements are available, we created a corpus of requirements written in controlled language by instructed users and uncontrolled language by uninstructed users. We annotated these requirements regarding predicate-argument structures, conditions, priorities, motivations and semantic roles and used this information to train classifiers for information extraction purposes. The approach achieves an accuracy of 92% for the on- and off-topic classification task and an F1-measure of 72% for the semantic annotation.}}, author = {{Dollmann, Markus and Geierhos, Michaela}}, booktitle = {{Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing (EMNLP)}}, location = {{Austin, TX, USA}}, pages = {{1807--1816}}, publisher = {{Association for Computational Linguistics (ACL)}}, title = {{{On- and Off-Topic Classification and Semantic Annotation of User-Generated Software Requirements}}}, year = {{2016}}, } @article{1771, abstract = {{Die (Wieder-)Einführung einer Vermögensteuer ist in den vergangenen Jahren erneut in den Fokus der politischen Diskussion gerückt. Der vorliegende Beitrag vermittelt einen Eindruck von den Belastungswirkungen, die aus der Umsetzung von aktuell vorliegenden Besteuerungskonzepten resultieren würden. Auf der Basis von realen Jahresabschlussdaten wird eine mehrperiodige Veranlagungssimulation durchgeführt, die insbesondere ermöglicht, den zu erwartenden Eigenkapitalverzehr sowie den Anstieg der Steuerbelastung für die betrachtete Stichprobe zu quantifizieren. Von besonderem Interesse sind hierbei Unternehmen, deren laufende Erträge nicht ausreichen, um die Belastungen durch die Vermögensteuer zu tragen und damit einem Substanzverzehr ausgesetzt sind. Es zeigt sich, dass etwa die Hälfte der Unternehmen im Untersuchungszeitraum von sechs Jahren in mindestens einem Jahr einen Substanzverzehr erfährt. Der Vermögensteuer kommt somit keinesfalls der vielfach postulierte Charakter einer eher mäßig belastenden und im Wesentlichen substanzverschonenden Steuer zu. Zusatzbelastungen von knapp 100 bis zu 300 % der Ertragsteuerlast sind keine Seltenheit und veranschaulichen das Gefährdungspotenzial dieser Steuer für den Wirtschaftsstandort Deutschland.}}, author = {{Hoppe, Thomas and Maiterth, Ralf and Sureth-Sloane, Caren}}, issn = {{0341-2687}}, journal = {{Schmalenbachs Zeitschrift für betriebswirtschaftliche Forschung}}, keywords = {{Steuerbelastung, Substanzbesteuerung, Ungleiche Vermögensverteilung, Veranlagungssimulation, Vermögensteuer}}, number = {{1}}, pages = {{3--45}}, publisher = {{Springer Nature}}, title = {{{Eigenkapitalverzehr und Substanzbesteuerung deutscher Unternehmen durch eine Vermögensteuer – eine empirische Analyse}}}, doi = {{10.1007/s41471-016-0005-x}}, volume = {{68}}, year = {{2016}}, } @techreport{2252, abstract = {{We study the willingness to compete in a cognitive task among an entire cohort of fresh man business and economics students. Combining data from a lab-in-thefield experiment with university admissions data, we trace the gender gap in competitiveness at different levels of high school performance. Our results confirm that, on average, men choose to compete more often. The gender gap disappears, however, among students with above average high school performance. Female high school top performers are equally competitive as their male counterparts. In fact, the overall gender gap is entirely driven by the group of female high school underperformers who shied away from competition, even when they performed well in our task. Overall, our findings suggest that high school grades are more than just a signal of cognitive abilities, because they seem to influence the receivers selfperception of his or her performance in a competitive environment involved in later on in life.}}, author = {{Hoyer, Britta and van Huizen, Tomas and Keijzer, Linda and Rezai Khavas, Tahere and Rosenkranz, Stephanie}}, title = {{{Do talented women shy away from competition?}}}, volume = {{16-06}}, year = {{2016}}, } @inproceedings{7765, author = {{Schumacher, Jan}}, booktitle = {{Beiträge zum Mathematikunterricht 2016}}, publisher = {{WTM-Verlag}}, title = {{{Erkunden mathematischer Strukturen anstatt Interpretation in Modellen – Ein innermathematischer Zugang zu negativen Zahlen}}}, year = {{2016}}, } @article{5676, author = {{Rauchecker, Gerhard and Schryen, Guido}}, journal = {{Im Einsatz}}, pages = {{44--46}}, publisher = {{Stumpf & Kossendey}}, title = {{{Projekt KUBAS: Koordination ungebundener Vor-Ort-Helfer}}}, volume = {{23}}, year = {{2016}}, } @article{714, abstract = {{The Service Programming and Orchestration for Virtualised Software Networks (SONATA) project targets both the flexible programmability of software networks and the optimisation of their deployments by means of integrating Development and Operations in order to accelerate industry adoption of software networks and reduce time-to-market for networked services. SONATA supports network function chaining and orchestration, making service platforms modular and easier to customise to the needs of different service providers, and introduces a specialised Development and Operations model for supporting developers.}}, author = {{Karl, Holger and Dräxler, Sevil and Peuster, Manuel and Galis, Alex and Bredel, Michael and Ramos, Aurora and Martrat, Josep and Siddiqui, Muhammad Shuaib and van Rossem, Steven and Tavernier, Wouter and Xilouris, George}}, issn = {{2161-3915}}, journal = {{Transactions on Emerging Telecommunications Technologies}}, number = {{9}}, pages = {{1206--1215}}, publisher = {{Wiley-Blackwell}}, title = {{{DevOps for network function virtualisation: an architectural approach}}}, doi = {{10.1002/ett.3084}}, volume = {{27}}, year = {{2016}}, } @inproceedings{730, abstract = {{Allocating resources to virtualized network functions and services to meet service level agreements is a challenging task for NFV management and orchestration systems. This becomes even more challenging when agile development methodologies, like DevOps, are applied. In such scenarios, management and orchestration systems are continuously facing new versions of functions and services which makes it hard to decide how much resources have to be allocated to them to provide the expected service performance. One solution for this problem is to support resource allocation decisions with performance behavior information obtained by profiling techniques applied to such network functions and services. In this position paper, we analyze and discuss the components needed to generate such performance behavior information within the NFV DevOps workflow. We also outline research questions that identify open issues and missing pieces for a fully integrated NFV profiling solution. Further, we introduce a novel profiling mechanism that is able to profile virtualized network functions and entire network service chains under different resource constraints before they are deployed on production infrastructure.}}, author = {{Peuster, Manuel and Karl, Holger}}, booktitle = {{Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016}}, location = {{Den Haag}}, pages = {{7----12}}, title = {{{Understand Your Chains: Towards Performance Profile-Based Network Service Management}}}, doi = {{10.1109/EWSDN.2016.9}}, year = {{2016}}, } @inproceedings{732, abstract = {{Elastic deployments of virtualized network functions~(VNF) can automatically scale the amount of used resources in relation to their workload. This is often done by starting new VNF instances or stopping old ones. A problem of these scale operations is that most network functions are stateful and their internal state is not automatically migrated when traffic is redistributed in the deployment. As a result, mechanisms are needed to exchange or migrate internal network function state between VNF instances. This paper presents a state management framework that creates a logically distributed state store on top of elastically deployed virtual network functions. We also introduce a novel programming model that provides both a local and a global view of the state to each VNF instance. We discuss the integration of our framework into existing network function virtualization architectures and compare the performance of our prototype to a centralized and a distributed state store solution.}}, author = {{Peuster, Manuel and Karl, Holger}}, booktitle = {{IEEE NetSoft Conference and Workshops, NetSoft 2016, Seoul, South Korea, June 6-10, 2016}}, location = {{Seoul}}, pages = {{6----10}}, title = {{{E-State: Distributed state management in elastic network function deployments}}}, doi = {{10.1109/NETSOFT.2016.7502432}}, year = {{2016}}, } @inproceedings{738, abstract = {{Virtualized network services consisting of multiple individual network functions are already today deployed across multiple sites, so called multi-PoP (points of presence) environments. This allows to improve service performance by optimizing its placement in the network. But prototyping and testing of these complex distributed software systems becomes extremely challenging. The reason is that not only the network service as such has to be tested but also its integration with management and orchestration systems. Existing solutions, like simulators, basic network emulators, or local cloud testbeds, do not support all aspects of these tasks. To this end, we introduce MeDICINE, a novel NFV prototyping platform that is able to execute production-ready network functions, provided as software containers, in an emulated multi-PoP environment. These network functions can be controlled by any third-party management and orchestration system that connects to our platform through standard interfaces. Based on this, a developer can use our platform to prototype and test complex network services in a realistic environment running on his laptop. }}, author = {{Peuster, Manuel and Karl, Holger and van Rossem, Steven}}, booktitle = {{IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)}}, location = {{Palo Alto}}, title = {{{MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP Environments}}}, doi = {{10.1109/NFV-SDN.2016.7919490}}, year = {{2016}}, } @inproceedings{5595, author = {{Wagner, Gerit and Prester, Julian and Roche, Maria and Benlian, Alexander and Schryen, Guido}}, booktitle = {{International Conference on Information Systems}}, title = {{{Factors Affecting the Scientific Impact of Literature Reviews: A Scientometric Study}}}, year = {{2016}}, }