@article{RabenaltRichterPoehletal.2012, author = {Rabenalt, Thomas and Richter, Michael and P{\"o}hl, Frank and G{\"o}ssel, Michael}, title = {Highly efficient test response compaction using a hierarchical x-masking technique}, series = {IEEE transactions on computer-aided design of integrated circuits and systems}, volume = {31}, journal = {IEEE transactions on computer-aided design of integrated circuits and systems}, number = {6}, publisher = {Inst. of Electr. and Electronics Engineers}, address = {Piscataway}, issn = {0278-0070}, doi = {10.1109/TCAD.2011.2181847}, pages = {950 -- 957}, year = {2012}, abstract = {This paper presents a highly effective compactor architecture for processing test responses with a high percentage of x-values. The key component is a hierarchical configurable masking register, which allows the compactor to dynamically adapt to and provide excellent performance over a wide range of x-densities. A major contribution of this paper is a technique that enables the efficient loading of the x-masking data into the masking logic in a parallel fashion using the scan chains. A method for eliminating the requirement for dedicated mask control signals using automated test equipment timing flexibility is also presented. The proposed compactor is especially suited to multisite testing. Experiments with industrial designs show that the proposed compactor enables compaction ratios exceeding 200x.}, language = {en} } @article{ParedesBooAmoretal.2012, author = {Paredes, E. G. and Boo, M. and Amor, M. and Bruguera, J. D. and D{\"o}llner, J{\"u}rgen Roland Friedrich}, title = {Extended hybrid meshing algorithm for multiresolution terrain models}, series = {International journal of geographical information science}, volume = {26}, journal = {International journal of geographical information science}, number = {5}, publisher = {Routledge, Taylor \& Francis Group}, address = {Abingdon}, issn = {1365-8816}, doi = {10.1080/13658816.2011.615317}, pages = {771 -- 793}, year = {2012}, abstract = {Hybrid terrains are a convenient approach for the representation of digital terrain models, integrating heterogeneous data from different sources. In this article, we present a general, efficient scheme for achieving interactive level-of-detail rendering of hybrid terrain models, without the need for a costly preprocessing or resampling of the original data. The presented method works with hybrid digital terrains combining regular grid data and local high-resolution triangulated irregular networks. Since grid and triangulated irregular network data may belong to different datasets, a straightforward combination of both geometries would lead to meshes with holes and overlapping triangles. Our method generates a single multiresolution model integrating the different parts in a coherent way, by performing an adaptive tessellation of the region between their boundaries. Hence, our solution is one of the few existing approaches for integrating different multiresolution algorithms within the same terrain model, achieving a simple interactive rendering of complex hybrid terrains.}, language = {en} } @article{LuebbeWeske2012, author = {Luebbe, Alexander and Weske, Mathias}, title = {Determining the effect of tangible business process modeling}, year = {2012}, language = {en} } @article{SteinertHirschfeld2012, author = {Steinert, Bastian and Hirschfeld, Robert}, title = {Applying design knowledge to programming}, year = {2012}, language = {en} } @article{GabrysiakGieseSeibel2012, author = {Gabrysiak, Gregor and Giese, Holger and Seibel, Andreas}, title = {Towards next-generation design thinking II : virtual muti-user software prototypes}, year = {2012}, language = {en} } @article{KowarkUflackerZeier2012, author = {Kowark, Thomas and Uflacker, Matthias and Zeier, Alexander}, title = {Towards a shared platform for virtual collaboration monotoring in design research}, year = {2012}, language = {en} } @article{BordihnKutribMalcher2012, author = {Bordihn, Henning and Kutrib, Martin and Malcher, Andreas}, title = {On the computational capacity of parallel communicating finite automata}, series = {International journal of foundations of computer science}, volume = {23}, journal = {International journal of foundations of computer science}, number = {3}, publisher = {World Scientific}, address = {Singapore}, issn = {0129-0541}, doi = {10.1142/S0129054112500062}, pages = {713 -- 732}, year = {2012}, abstract = {Systems of parallel finite automata communicating by states are investigated. We consider deterministic and nondeterministic devices and distinguish four working modes. It is known that systems in the most general mode are as powerful as one-way multi-head finite automata. Here we solve some open problems on the computational capacity of systems working in the remaining modes. In particular, it is shown that deterministic returning and non-returning devices are equivalent, and that there are languages which are accepted by deterministic returning and centralized systems but cannot be accepted by deterministic non-returning centralized systems. Furthermore, we show that nondeterministic systems are strictly more powerful than their deterministic variants in all the four working modes. Finally, incomparability with the classes of (deterministic) (linear) context-free languages as well as the Church-Rosser languages is derived.}, language = {en} } @article{GebserKaufmannSchaub2012, author = {Gebser, Martin and Kaufmann, Benjamin and Schaub, Torsten H.}, title = {Conflict-driven answer set solving: From theory to practice}, series = {Artificial intelligence}, volume = {187}, journal = {Artificial intelligence}, number = {8}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0004-3702}, doi = {10.1016/j.artint.2012.04.001}, pages = {52 -- 89}, year = {2012}, abstract = {We introduce an approach to computing answer sets of logic programs, based on concepts successfully applied in Satisfiability (SAT) checking. The idea is to view inferences in Answer Set Programming (ASP) as unit propagation on nogoods. This provides us with a uniform constraint-based framework capturing diverse inferences encountered in ASP solving. Moreover, our approach allows us to apply advanced solving techniques from the area of SAT. As a result, we present the first full-fledged algorithmic framework for native conflict-driven ASP solving. Our approach is implemented in the ASP solver clasp that has demonstrated its competitiveness and versatility by winning first places at various solver contests.}, language = {en} } @article{OstrowskiSchaub2012, author = {Ostrowski, Max and Schaub, Torsten H.}, title = {ASP modulo CSP The clingcon system}, series = {Theory and practice of logic programming}, volume = {12}, journal = {Theory and practice of logic programming}, publisher = {Cambridge Univ. Press}, address = {New York}, issn = {1471-0684}, doi = {10.1017/S1471068412000142}, pages = {485 -- 503}, year = {2012}, abstract = {We present the hybrid ASP solver clingcon, combining the simple modeling language and the high performance Boolean solving capacities of Answer Set Programming (ASP) with techniques for using non-Boolean constraints from the area of Constraint Programming (CP). The new clingcon system features an extended syntax supporting global constraints and optimize statements for constraint variables. The major technical innovation improves the interaction between ASP and CP solver through elaborated learning techniques based on irreducible inconsistent sets. A broad empirical evaluation shows that these techniques yield a performance improvement of an order of magnitude.}, language = {en} } @article{GebserKaufmannSchaub2012, author = {Gebser, Martin and Kaufmann, Benjamin and Schaub, Torsten H.}, title = {Multi-threaded ASP solving with clasp}, series = {Theory and practice of logic programming}, volume = {12}, journal = {Theory and practice of logic programming}, number = {8}, publisher = {Cambridge Univ. Press}, address = {New York}, issn = {1471-0684}, doi = {10.1017/S1471068412000166}, pages = {525 -- 545}, year = {2012}, abstract = {We present the new multi-threaded version of the state-of-the-art answer set solver clasp. We detail its component and communication architecture and illustrate how they support the principal functionalities of clasp. Also, we provide some insights into the data representation used for different constraint types handled by clasp. All this is accompanied by an extensive experimental analysis of the major features related to multi-threading in clasp.}, language = {en} } @article{FabianKunzKonnegenetal.2012, author = {Fabian, Benjamin and Kunz, Steffen and Konnegen, Marcel and M{\"u}ller, Sebastian and G{\"u}nther, Oliver}, title = {Access control for semantic data federations in industrial product-lifecycle management}, series = {Computers in industry : an international, application oriented research journal}, volume = {63}, journal = {Computers in industry : an international, application oriented research journal}, number = {9}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0166-3615}, doi = {10.1016/j.compind.2012.08.015}, pages = {930 -- 940}, year = {2012}, abstract = {Information integration across company borders becomes increasingly important for the success of product lifecycle management in industry and complex supply chains. Semantic technologies are about to play a crucial role in this integrative process. However, cross-company data exchange requires mechanisms to enable fine-grained access control definition and enforcement, preventing unauthorized leakage of confidential data across company borders. Currently available semantic repositories are not sufficiently equipped to satisfy this important requirement. This paper presents an infrastructure for controlled sharing of semantic data between cooperating business partners. First, we motivate the need for access control in semantic data federations by a case study in the industrial service sector. Furthermore, we present an architecture for controlling access to semantic repositories that is based on our newly developed SemForce security service. Finally, we show the practical feasibility of this architecture by an implementation and several performance experiments.}, language = {en} } @article{BruecknerKanzowScheffer2012, author = {Br{\"u}ckner, Michael and Kanzow, Christian and Scheffer, Tobias}, title = {Static prediction games for adversarial learning problems}, series = {Journal of machine learning research}, volume = {13}, journal = {Journal of machine learning research}, publisher = {Microtome Publishing}, address = {Cambridge, Mass.}, issn = {1532-4435}, pages = {2617 -- 2654}, year = {2012}, abstract = {The standard assumption of identically distributed training and test data is violated when the test data are generated in response to the presence of a predictive model. This becomes apparent, for example, in the context of email spam filtering. Here, email service providers employ spam filters, and spam senders engineer campaign templates to achieve a high rate of successful deliveries despite the filters. We model the interaction between the learner and the data generator as a static game in which the cost functions of the learner and the data generator are not necessarily antagonistic. We identify conditions under which this prediction game has a unique Nash equilibrium and derive algorithms that find the equilibrial prediction model. We derive two instances, the Nash logistic regression and the Nash support vector machine, and empirically explore their properties in a case study on email spam filtering.}, language = {en} } @article{SrinivasanSenthilkumarMohamedetal.2012, author = {Srinivasan, K. and Senthilkumar, D. V. and Mohamed, I. Raja and Murali, K. and Lakshmanan, M. and Kurths, J{\"u}rgen}, title = {Anticipating, complete and lag synchronizations in RC phase-shift network based coupled Chua's circuits without delay}, series = {Chaos : an interdisciplinary journal of nonlinear science}, volume = {22}, journal = {Chaos : an interdisciplinary journal of nonlinear science}, number = {2}, publisher = {American Institute of Physics}, address = {Melville}, issn = {1054-1500}, doi = {10.1063/1.4711375}, pages = {8}, year = {2012}, abstract = {We construct a new RC phase shift network based Chua's circuit, which exhibits a period-doubling bifurcation route to chaos. Using coupled versions of such a phase-shift network based Chua's oscillators, we describe a new method for achieving complete synchronization (CS), approximate lag synchronization (LS), and approximate anticipating synchronization (AS) without delay or parameter mismatch. Employing the Pecora and Carroll approach, chaos synchronization is achieved in coupled chaotic oscillators, where the drive system variables control the response system. As a result, AS or LS or CS is demonstrated without using a variable delay line both experimentally and numerically.}, language = {en} } @article{ThienenNoweskiMeineletal.2012, author = {Thienen, Julia von and Noweski, Christine and Meinel, Christoph and Lang, Sabine and Nicolai, Claudia and Bartz, Andreas}, title = {What can design thinking learn from behavior group theraphy?}, isbn = {978-3-642-31990-7}, year = {2012}, language = {en} } @article{JobstKoeppenLindbergetal.2012, author = {Jobst, Birgit and K{\"o}ppen, Eva and Lindberg, Tilmann and Moritz, Josephine and Rhinow, Holger and Meinel, Christoph}, title = {The faith-factor in design thinking : creative confidence through education at the design thinking schools Potsdam and Standford?}, isbn = {978-3-642-31990-7}, year = {2012}, language = {en} } @article{NoweskiScheerBuettneretal.2012, author = {Noweski, Christine and Scheer, Andrea and B{\"u}ttner, Nadja and Thienen, Julia von and Erdmann, Johannes and Meinel, Christoph}, title = {Towards a paradigm shift in education practice : developing twenty-first century skills with design thinking}, isbn = {978-3-642-31990-7}, year = {2012}, language = {en} } @article{GumiennyGerickeWenzeletal.2012, author = {Gumienny, Raja and Gericke, Lutz and Wenzel, Matthias and Meinel, Christoph}, title = {Tele-board in use : applying aq digital whiteboard system in different situations and setups}, isbn = {978-3-642-31990-7}, year = {2012}, language = {en} } @article{ThienenNoweskiRauthetal.2012, author = {Thienen, Julia von and Noweski, Christine and Rauth, Ingo and Meinel, Christoph and Lange, Sabine}, title = {If you want to know who are, tell me where you are : the importance of places}, year = {2012}, language = {en} } @article{MeinelLeifer2012, author = {Meinel, Christoph and Leifer, Larry}, title = {Design thinking research}, isbn = {978-3-642-31990-7}, year = {2012}, language = {en} } @article{LindbergKoeppenRauthetal.2012, author = {Lindberg, Tilmann and K{\"o}ppen, Eva and Rauth, Ingo and Meinel, Christoph}, title = {On the perection, adoption and Implementation of design thinking in the IT industry}, year = {2012}, language = {en} } @article{GerickeGumiennyMeinel2012, author = {Gericke, Lutz and Gumienny, Raja and Meinel, Christoph}, title = {Tele-board : folow the traces of your design process history}, year = {2012}, language = {en} } @article{MeinelLeifer2012, author = {Meinel, Christoph and Leifer, Larry}, title = {Design thinking research}, year = {2012}, language = {en} }