@inproceedings{47254, author = {{Oltrogge, Marten and Derr, Erik and Stransky, Christian and Acar, Yasemin and Fahl, Sascha and Rossow, Christian and Pellegrino, Giancarlo and Bugiel, Sven and Backes, Michael}}, booktitle = {{2018 IEEE Symposium on Security and Privacy (SP)}}, publisher = {{IEEE}}, title = {{{The Rise of the Citizen Developer: Assessing the Security Impact of Online App Generators}}}, doi = {{10.1109/sp.2018.00005}}, year = {{2018}}, } @inproceedings{47252, author = {{Wermke, Dominik and Huaman, Nicolas and Acar, Yasemin and Reaves, Bradley and Traynor, Patrick and Fahl, Sascha}}, booktitle = {{Proceedings of the 34th Annual Computer Security Applications Conference, ACSAC 2018, San Juan, PR, USA, December 03-07, 2018}}, pages = {{222–235}}, publisher = {{ACM}}, title = {{{A Large Scale Investigation of Obfuscation Use in Google Play}}}, doi = {{10.1145/3274694.3274726}}, year = {{2018}}, } @inproceedings{46348, abstract = {{We analyze the effects of including local search techniques into a multi-objective evolutionary algorithm for solving a bi-objective orienteering problem with a single vehicle while the two conflicting objectives are minimization of travel time and maximization of the number of visited customer locations. Experiments are based on a large set of specifically designed problem instances with different characteristics and it is shown that local search techniques focusing on one of the objectives only improve the performance of the evolutionary algorithm in terms of both objectives. The analysis also shows that local search techniques are capable of sending locally optimal solutions to foremost fronts of the multi-objective optimization process, and that these solutions then become the leading factors of the evolutionary process.}}, author = {{Bossek, Jakob and Grimme, Christian and Meisel, Stephan and Rudolph, Guenter and Trautmann, Heike}}, booktitle = {{Proceedings of the Genetic and Evolutionary Computation Conference}}, isbn = {{978-1-4503-5618-3}}, pages = {{585–592}}, publisher = {{ACM}}, title = {{{Local Search Effects in Bi-Objective Orienteering}}}, doi = {{10.1145/3205455.3205548}}, year = {{2018}}, } @article{46352, abstract = {{The Travelling Salesperson Problem (TSP) is one of the best-studied NP-hard problems. Over the years, many different solution approaches and solvers have been developed. For the first time, we directly compare five state-of-the-art inexact solvers—namely, LKH, EAX, restart variants of those, and MAOS—on a large set of well-known benchmark instances and demonstrate complementary performance, in that different instances may be solved most effectively by different algorithms. We leverage this complementarity to build an algorithm selector, which selects the best TSP solver on a per-instance basis and thus achieves significantly improved performance compared to the single best solver, representing an advance in the state of the art in solving the Euclidean TSP. Our in-depth analysis of the selectors provides insight into what drives this performance improvement.}}, author = {{Kerschke, Pascal and Kotthoff, Lars and Bossek, Jakob and Hoos, Holger H. and Trautmann, Heike}}, journal = {{Evolutionary Computation (ECJ)}}, number = {{4}}, pages = {{597–620}}, title = {{{Leveraging TSP Solver Complementarity through Machine Learning}}}, doi = {{10.1162/evco_a_00215}}, volume = {{26}}, year = {{2018}}, } @inproceedings{46349, abstract = {{Performance comparisons of optimization algorithms are heavily influenced by the underlying indicator(s). In this paper we investigate commonly used performance indicators for single-objective stochastic solvers, such as the Penalized Average Runtime (e.g., PAR10) or the Expected Running Time (ERT), based on exemplary benchmark performances of state-of-the-art inexact TSP solvers. Thereby, we introduce a methodology for analyzing the effects of (usually heuristically set) indicator parametrizations - such as the penalty factor and the method used for aggregating across multiple runs - w.r.t. the robustness of the considered optimization algorithms.}}, author = {{Kerschke, Pascal and Bossek, Jakob and Trautmann, Heike}}, booktitle = {{Proceedings of the Genetic and Evolutionary Computation Conference (GECCO ’18) Companion}}, isbn = {{978-1-4503-5764-7/18/07}}, pages = {{1737–1744}}, title = {{{Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers}}}, doi = {{10.1145/3205651.3208233}}, year = {{2018}}, } @phdthesis{1209, abstract = {{My dissertation deals with the Gathering problem for swarms of n point-shaped robots on a grid, in which all robots of the swarm are supposed to gather at a previously undefined point. Special attention is paid to the strong limitation of robot capabilities. These include in particular the lack of global control, a global compass, global visibility and (global) communication skills. Furthermore, all robots are identical. The robots are given only local abilities. This includes a constant range of vision. The robots all work completely synchronously. In this work we present and analyze three different Gathering strategies in different robot models. We formally prove correctness and total running time: Chapter 4 focuses on minimizing the available robot capabilities. The underlying strategy completes the gathering in O(n^2) time. For the following Chapters 5 and 6, the aim is to optimize the total running time under using only local robot capabilities: We additionally allow a constant-sized memory and a constant number of locally visible statuses (lights, flags). For the strategies of both chapters we show an asymptotically optimal running time of O(n). Unlike in Chapters 4 and 5, we additionally restrict connectivity and vision to an initially given chain connectivity in Chapter 6, where two chain neighbors must have a distance of 1 from each other. A robot can only see and interact with a constant number of its direct chain neighbors.}}, author = {{Jung, Daniel}}, isbn = {{978-3-942647-99-1}}, publisher = {{Universität Paderborn}}, title = {{{Local Strategies for Swarm Formations on a Grid}}}, doi = {{10.17619/UNIPB/1-271}}, year = {{2018}}, } @phdthesis{55291, author = {{Technau, Marc}}, publisher = {{University of Würzburg}}, title = {{{On Beatty sets and some generalisations thereof}}}, doi = {{10.25972/WUP-978-3-95826-089-4}}, year = {{2018}}, } @inproceedings{8575, abstract = {{The transition from high school to university mathematics has proven to be difficult for many students but especially for pre-service secondary teachers. To support these students at mastering this transition, various universities have introduced support measures of various kinds. The WiGeMath project developed a taxonomy that makes it possible to describe and compare these measures concerning their goals as well as their frame characteristics. We will exemplify the use of the taxonomy in the description of one specific innovative measure that was part of the WiGeMath evaluations. Moreover, we will present first results concerning the goal-fulfilment of this measure concerning affective characteristics of the student cohort and their predominant beliefs.}}, author = {{Kuklinski, Christiane and Leis, Elena and Liebendörfer, Michael and Hochmuth, Reinhard and Biehler, Rolf and Lankeit, Elisa and Neuhaus, Silke and Schaper, Niclas and Schürmann, Mirko}}, booktitle = {{Proceedings of the Second Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2018, 5-7 April 2018)}}, editor = {{Durand-Guerrier, V. and Hochmuth, R. and Goodchild, S. and Hogstad, N.M.}}, keywords = {{Beliefs., Motivational developments, Novel approaches to teaching, Teacher education, Transition to and across university mathematics}}, pages = {{527--536}}, publisher = {{INDRUM Network, University of Agder}}, title = {{{Evaluating Innovative Measures in University Mathematics – The Case of Affective Outcomes in a Lecture focused on Problem-Solving}}}, year = {{2018}}, } @inbook{8569, author = {{Biehler, Rolf and Hochmuth, Reinhard and Schaper, Niclas and Kuklinski, Christiane and Lankeit, Elisa and Leis, Elena and Liebendörfer, Michael and Schürmann, Mirko}}, booktitle = {{3. Auswertungsworkshop der Begleitforschung. Dokumentation der Projektbeiträge.}}, editor = {{Hanft, Anke and Bischoff, Franziska and Kretschmer, Stefanie}}, pages = {{32--41}}, publisher = {{Carl von Ossietzky Universität Oldenburg}}, title = {{{Verbundprojekt WiGeMath: Wirkung und Gelingensbedingungen von Unterstützungsmaßnahmen für mathematikbezogenes Lernen in der Studieneingangsphase}}}, year = {{2018}}, } @techreport{16967, author = {{Hochmuth, Reinhard and Biehler, Rolf and Schaper, Niclas and Kuklinski, Christiane and Lankeit, Elisa and Leis, Elena and Liebendörfer, Michael and Schürmann, Mirko}}, title = {{{Wirkung und Gelingensbedingungen von Unterstützungsmaßnahmen für mathmatikbezogenes Lernen in der Studieneingangsphase : Schlussbericht: Teilprojekt A der Leibniz Universität Hannover, Teilprojekte B und C der Universität Paderborn: Berichtszeitraum: 01.03.2015-31.08.2018}}}, doi = {{10.2314/KXP:1689534117}}, year = {{2018}}, } @inproceedings{35648, author = {{Nofen, Barbara and Temmen, Katrin}}, booktitle = {{2018 IEEE Global Engineering Education Conference (EDUCON)}}, publisher = {{IEEE}}, title = {{{The lecture hall laboratory: Design of a field experiment for effectiveness analysis}}}, doi = {{10.1109/educon.2018.8363283}}, year = {{2018}}, } @article{37265, author = {{Friederici, D.-P.}}, journal = {{Die Hochschullehre}}, title = {{{Eine Untersuchung mit Studierenden über den Umgang mit ihrer Zeit}}}, year = {{2018}}, } @inproceedings{34130, abstract = {{There have been numerous studies so far highlighting the potential of Augmented Reality (AR) in different educational domains and its impact on learners regarding their increased motivation, improved learning, concentration on the topic etc. Ever since high-end AR applications could be used on smartphones, this technology has become suitable to be used in many formal and informal learning environments and educational institutions, beginning with Arts courses in preschool over Biology, History, Chemistry, Physics etc. in K-12 and universities as well as in vocational schools ([1], [2]), e.g. for assembly trainings [3]. However, less research has been done regarding proper educational design principles and guides identifying the learning-promoting characteristics as to their efficacy in an AR environment ([1], [4]). Particularly there is a big lack for design concepts in the field of preparation and accompanying tools for laboratory work, since current studies are only extending real papers or books with additional links, videos or static 3D models (e.g. [5], [6]). Hence, this paper investigates and focuses at a design concept for mobile device based AR application (App) to acquire and deepen practical skills in dealing with electro-technical laboratory equipment and components. In a previous paper, the potentials and limitation of AR technology regarding engineering education with a special focus on laboratory work have been investigated to avoid common mistakes in the design concept.}}, author = {{Alptekin, Mesut and Temmen, Katrin}}, booktitle = {{2018 IEEE Global Engineering Education Conference (EDUCON)}}, isbn = {{978-1-5386-2957-4}}, location = {{Santa Cruz de Tenerife, Spain}}, pages = {{963--968}}, publisher = {{IEEE}}, title = {{{Design concept and prototype for an augmented reality based virtual preparation laboratory training in electrical engineering}}}, doi = {{10.1109/educon.2018.8363334}}, year = {{2018}}, } @article{3427, abstract = {{We report on the coherent phase manipulation of quantum dot excitons by electric means. For our experiments, we use a low capacitance single quantum dot photodiode which is electrically controlled by a custom designed SiGe:C BiCMOS chip. The phase manipulation is performed and quantified in a Ramsey experiment, where ultrafast transient detuning of the exciton energy is performed synchronous to double pulse p/2 ps laser excitation. We are able to demonstrate electrically controlled phase manipulations with magnitudes up to 3p within 100 ps which is below the dephasing time of the quantum dot exciton.}}, author = {{Widhalm, Alex and Mukherjee, Amlan and Krehs, Sebastian and Sharma, Nandlal and Kölling, Peter and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, keywords = {{tet_topic_qd}}, number = {{11}}, pages = {{111105}}, title = {{{Ultrafast electric phase control of a single exciton qubit}}}, doi = {{10.1063/1.5020364}}, volume = {{112}}, year = {{2018}}, } @inproceedings{39651, author = {{Meister, Tilo and Ellinger, Frank and Bartha, Johann W. and Berroth, Manfred and Burghartz, Joachim and Claus, Martin and Frey, Lothar and Gagliardi, Alessio and Grundmann, Marius and Hesselbarth, Jan and Klauk, Hagen and Leo, Karl and Lugli, Paolo and Mannsfeld, Stefan and Manoli, Yiannos and Negra, Renato and Neumaier, Daniel and Pfeiffer, Ullrich and Riedl, Thomas and Scheinert, Susanne and Scherf, Ullrich and Thiede, Andreas and Troster, Gerhard and Vossiek, Martin and Weigel, Robert and Wenger, Christian and Alavi, Golzar and Becherer, Markus and Chavarin, Carlos Alvarado and Darwish, Mohammed and Ellinger, Martin and Fan, Chun-Yu and Fritsch, Martin and Grotjahn, Frank and Gunia, Marco and Haase, Katherina and Hillger, Philipp and Ishida, Koichi and Jank, Michael and Knobelspies, Stefan and Kuhl, Matthias and Lupina, Grzegorz and Naghadeh, Shabnam Mohammadi and Munzenrieder, Niko and Ozbek, Sefa and Rasteh, Mahsa and Salvatore, Giovanni A. and Schrufer, Daniel and Strobel, Carsten and Theisen, Manuel and Tuckmantel, Christian and von Wenckstern, Holger and Wang, Zhenxing and Zhang, Zhipeng}}, booktitle = {{2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)}}, publisher = {{IEEE}}, title = {{{Program FFlexCom — High frequency flexible bendable electronics for wireless communication systems}}}, doi = {{10.1109/comcas.2017.8244733}}, year = {{2018}}, } @article{37661, author = {{Rösler, Margit and Voit, Michael}}, issn = {{0022-2526}}, journal = {{Studies in Applied Mathematics}}, keywords = {{Applied Mathematics}}, number = {{4}}, pages = {{474--500}}, publisher = {{Wiley}}, title = {{{Beta Distributions and Sonine Integrals for Bessel Functions on Symmetric Cones}}}, doi = {{10.1111/sapm.12217}}, volume = {{141}}, year = {{2018}}, } @article{37662, author = {{Rösler, Margit and Graczyk, Piotr and Luks, Tomasz}}, issn = {{0926-2601}}, journal = {{Potential Analysis}}, keywords = {{Analysis}}, number = {{3}}, pages = {{337--360}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{On the Green Function and Poisson Integrals of the Dunkl Laplacian}}}, doi = {{10.1007/s11118-017-9638-6}}, volume = {{48}}, year = {{2018}}, } @inproceedings{38220, author = {{Noé, Reinhold and Koch, Benjamin}}, booktitle = {{Photonic Networks; 19th ITG-Symposium}}, pages = {{1--4}}, title = {{{Emulation of polarization fluctuations in glass fibers caused by lightning strikes}}}, year = {{2018}}, } @article{40700, abstract = {{We propose a technique that jointly detects the presence of almost-cyclostationary (ACS) signals in wide-sense stationary (WSS) noise and provides an estimate of their cycle period. Since the cycle period of an ACS process is not an integer, the approach is based on a combination of a resampling stage and a multiple hypothesis test, which deal separately with the fractional part and the integer part of the cycle period. The approach requires resampling the signal at many different rates, which is computationally expensive. For this reason we propose a filter bank structure that allows us to efficiently resample a signal at many different rates by identifying common interpolation stages among the set of resampling rates.}}, author = {{Horstmann, Stefanie and Ramírez, David and Schreier, Peter J.}}, journal = {{IEEE Signal Process. Lett.}}, number = {{11}}, pages = {{1695–1699}}, title = {{{Joint Detection of Almost-Cyclostationary Signals and Estimation of Their Cycle Period}}}, doi = {{10.1109/LSP.2018.2871961}}, volume = {{25}}, year = {{2018}}, } @article{40699, author = {{Xiao, Y-.H. and Huang, L. and Xie, J. and So, H. C.}}, journal = {{IEEE Transactions on Information Theory}}, number = {{3}}, pages = {{1784–1799}}, title = {{{Approximate Asymptotic Distribution of Locally Most Powerful Invariant Test for Independence Complex Case}}}, volume = {{64}}, year = {{2018}}, }