@inproceedings{37007, abstract = {{UML is widely applied for the specification and modeling of software and some studies have demonstrated that it is applicable for HW/SW codesign. However, in this area there is still a big gap from UML modeling to SystemC-based verification and synthesis environments. This paper presents an efficient approach to bridge this gap in the context of Systems-on-a-Chip (SoC) design. We propose a framework for the seamless integration of a customized SysML entry with code generation for HW/SW cosimulation and high-level FPGA synthesis. For this, we extended the SysML UML profile by SystemC and synthesis capabilities. Two case studies demonstrate the applicability of our approach.}}, author = {{Mischkalla, Fabian and He, Da and Müller, Wolfgang}}, booktitle = {{Proceedings of DATE’10}}, keywords = {{Unified modeling language, Field programmable gate arrays, Bridges, Helium, Real time systems, Operating systems, Documentation, Application software, XML, Space exploration}}, location = {{Dresden}}, publisher = {{IEEE}}, title = {{{Closing the Gap between UML-based Modeling and Simulation of Combined HW/SW Systems}}}, doi = {{10.1109/DATE.2010.5456990}}, year = {{2010}}, } @inproceedings{37040, abstract = {{Refinement of untimed TLM models into a timed HW/SW platform is a step by step design process which is a trade-off between timing accuracy of the used models and correct estimation of the final timing performance. The use of an RTOS on the target platform is mandatory in the case real-time properties must be guaranteed. Thus, the question is when the RTOS must be introduced in this step by step refinement process. This paper proposes a four-level RTOS-aware refinement methodology that, starting from an untimed TLM SystemC description of the whole system, progressively introduce HW/SW partitioning, timing, device driver and RTOS functionalities, till to obtain an accurate model of the final platform, where SW tasks run upon an RTOS hosted by QEMU and HW components are modeled by cycle accurate TLM descriptions. Each refinement level allows the designer to estimate more and more accurate timing properties, thus anticipating design decisions without being constrained to leave timing analysis to the final step of the refinement. The effectiveness of the methodology has been evaluated in the design of two complex platforms.}}, author = {{Becker, Markus and Di Guglielmo, Giuseppe and Fummi, Franco and Müller, Wolfgang and Pravadelli, Graziano and Xie, Tao}}, booktitle = {{Proceedings of DATE’10}}, keywords = {{Timing, Hardware, Operating systems, Process design, Accuracy, Standards development, Context modeling, Real time systems, Communication channels, Microprogramming}}, location = {{Dresden}}, publisher = {{IEEE}}, title = {{{RTOS-Aware Refinement for TLM2.0-based HW/SW Design}}}, doi = {{10.1109/DATE.2010.5456965}}, year = {{2010}}, } @misc{37527, author = {{Weber, Jutta}}, booktitle = {{Enzyklopädie Philosophie Bd. 2}}, editor = {{Sandkühler, Hans-Jörg}}, pages = {{1377u--1382b}}, publisher = {{Felix Meiner Verlag}}, title = {{{Leben}}}, volume = {{2}}, year = {{2010}}, } @article{22607, author = {{Maxisch, M. and Ebbert, C. and Torun, B. and Fink, N. and de los Arcos de Pedro, Maria Teresa and Lackmann, J. and Maier, H.J. and Grundmeier, G.}}, issn = {{0169-4332}}, journal = {{Applied Surface Science}}, 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}}, year = {{2010}}, } @article{39742, author = {{Zöller, M.A. and Stich, N. and Benning, S.A. and Hoischen, A. and Kitzerow, Heinz-Siegfried}}, issn = {{0267-8292}}, journal = {{Liquid Crystals}}, keywords = {{Condensed Matter Physics, General Materials Science, General Chemistry}}, number = {{4}}, pages = {{383--388}}, publisher = {{Informa UK Limited}}, title = {{{Bold relief fabrication by means of electroconvection: basic properties of a suitable mixture}}}, doi = {{10.1080/02678291003632603}}, volume = {{37}}, year = {{2010}}, } @article{39740, author = {{Urbanski, Martin and Kinkead, Brandy and Hegmann, Torsten and Kitzerow, Heinz-Siegfried}}, issn = {{0267-8292}}, journal = {{Liquid Crystals}}, keywords = {{Condensed Matter Physics, General Materials Science, General Chemistry}}, number = {{9}}, pages = {{1151--1156}}, publisher = {{Informa UK Limited}}, title = {{{Director field of birefringent stripes in liquid crystal/nanoparticle dispersions}}}, doi = {{10.1080/02678292.2010.489160}}, volume = {{37}}, year = {{2010}}, } @article{39741, author = {{Kitzerow, Heinz-Siegfried}}, issn = {{0015-0193}}, journal = {{Ferroelectrics}}, keywords = {{Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{1}}, pages = {{66--85}}, publisher = {{Informa UK Limited}}, title = {{{Blue Phases: Prior Art, Potential Polar Effects, Challenges}}}, doi = {{10.1080/00150191003683807}}, volume = {{395}}, year = {{2010}}, } @article{39974, author = {{Kitzerow, Heinz-Siegfried}}, issn = {{1358-314X}}, journal = {{Liquid Crystals Today}}, keywords = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}}, number = {{4}}, pages = {{3--7}}, publisher = {{Informa UK Limited}}, title = {{{Tunable photonic crystals}}}, doi = {{10.1080/1464518021000069229}}, volume = {{11}}, year = {{2010}}, } @article{39972, author = {{Kitzerow, Heinz-Siegfried}}, issn = {{1439-9598}}, journal = {{Nachrichten aus der Chemie}}, keywords = {{General Chemical Engineering, General Chemistry}}, number = {{6}}, pages = {{678--679}}, publisher = {{Wiley}}, title = {{{33. Arbeitstagung Flüssigkristalle}}}, doi = {{10.1002/nadc.20050530635}}, volume = {{53}}, year = {{2010}}, } @article{39739, abstract = {{ The electrooptic characteristics of the field-induced reorientation of a nematic liquid crystal are studied using graphene layers as transparent conductive electrodes. The covering of a large area with highly conductive graphene was achieved by the thermal reduction of a graphene oxide film. The conductivity of the graphene electrode provides electrooptic properties that are comparable to those of liquid crystal cells with two conventional indium tin oxide electrodes. This result confirms earlier studies and suggestions concerning graphene-based liquid crystal devices. It demonstrates that the fabrication of graphene layers via the deposition and subsequent reduction of graphene oxide is suitable for liquid crystal applications. }}, author = {{Nordendorf, Gaby and Kasdorf, Olga and Kitzerow, Heinz-Siegfried and Liang, Yanyu and Feng, Xinliang and Müllen, Klaus}}, issn = {{0021-4922}}, journal = {{Japanese Journal of Applied Physics}}, keywords = {{General Physics and Astronomy, General Engineering}}, number = {{10R}}, publisher = {{IOP Publishing}}, title = {{{Liquid Crystal Addressing by Graphene Electrodes Made from Graphene Oxide}}}, doi = {{10.1143/jjap.49.100206}}, volume = {{49}}, year = {{2010}}, } @article{39738, author = {{Urbanski, Martin and Kinkead, Brandy and Qi, Hao and Hegmann, Torsten and Kitzerow, Heinz-Siegfried}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, keywords = {{General Materials Science}}, number = {{7}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Electroconvection in nematic liquid crystals via nanoparticle doping}}}, doi = {{10.1039/c0nr00139b}}, volume = {{2}}, year = {{2010}}, } @article{39737, author = {{Lorenz, Alexander and Schuhmann, Rolf and Kitzerow, Heinz-Siegfried}}, issn = {{0003-6935}}, journal = {{Applied Optics}}, number = {{20}}, publisher = {{The Optical Society}}, title = {{{Switchable waveguiding in two liquid-crystal-filled photonic crystal fibers}}}, doi = {{10.1364/ao.49.003846}}, volume = {{49}}, year = {{2010}}, } @inproceedings{39736, author = {{Kinkead, Brandy and Urbanski, Martin and Qi, Hao and Kitzerow, Heinz-Siegfried and Hegmann, Torsten}}, booktitle = {{SPIE Proceedings}}, editor = {{Khoo, Iam Choon}}, issn = {{0277-786X}}, publisher = {{SPIE}}, title = {{{Alignment and electrooptic effects in nanoparticle-doped nematic liquid crystals}}}, doi = {{10.1117/12.858831}}, year = {{2010}}, } @article{39745, author = {{Kasdorf, Olga and Kitzerow, Heinz-Siegfried and Lenoble-Zwahlen, Julie and Deschenaux, Robert}}, issn = {{0021-4922}}, journal = {{Japanese Journal of Applied Physics}}, keywords = {{General Physics and Astronomy, Physics and Astronomy (miscellaneous), General Engineering}}, number = {{1}}, publisher = {{IOP Publishing}}, title = {{{Influence of a Mesogenic Dendrimer on the Morphology of Polymer–Fullerene Composites for Photovoltaics}}}, doi = {{10.1143/jjap.49.01af01}}, volume = {{49}}, year = {{2010}}, } @article{39743, author = {{Lorenz, Alexander and Schuhmann, Rolf and Kitzerow, Heinz-Siegfried}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{4}}, publisher = {{The Optical Society}}, title = {{{Infiltrated photonic crystal fiber: experiments and liquid crystal scattering model}}}, doi = {{10.1364/oe.18.003519}}, volume = {{18}}, year = {{2010}}, } @article{40082, author = {{Kitzerow, Heinz-Siegfried}}, issn = {{0015-0193}}, journal = {{Ferroelectrics}}, keywords = {{Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{1}}, pages = {{66--85}}, publisher = {{Informa UK Limited}}, title = {{{Blue Phases: Prior Art, Potential Polar Effects, Challenges}}}, doi = {{10.1080/00150191003683807}}, volume = {{395}}, year = {{2010}}, } @inproceedings{17255, abstract = {{In recent years, research has moved towards the learning by interaction paradigm 1 suggesting that interaction with an artificial agent is facilitated when characteristics of a social interaction are considered. It is envisoned that agents will learn from humans by simply interacting with each other. In such a scenario, learning by interaction {\textquoteright}goes beyond common supervised or unsupervised strategies by taking into account wider feedback and assessments for the learning processes{\textquoteright} (1 p.140). So far, little is known about interactional processes and feedback strategies involved. Yet, in order to learn, a learner will typically need to be provided with information given by a teacher who not only gives certain structure to the interaction but also instructs for and demonstrates the learning contents. The given information can only be effective, if the learner is receptive. To assure this, the tutor makes use of interactive regularities checking the learner{\textquoteright}s behavior. The term contingency has been suggested to encompass such regu- larities in interaction. More specifically, it refers to a temporal sequence of behavior and reaction (2, 3). It has been shown that contingency is an important factor in interactions with infants and contributes to the cognitive development of infants 4. In the interaction with an artificial agent, contingency has been operationalized by eye-gaze bouts 5. So far, it has been shown that while in a situation with a child, eye-gaze bouts in total, average and frequency is much higher as in interaction with an adult as learner. In a situation with an artificial agent, a decrease of eye-gaze bouts could be observed 5. It could thus be reasoned that tutor{\textquoteright}s monitoring behavior is impaired when interacting with a robot. However, so far only an interaction with a virtual robot has been investigated. In contrast, an embodied robot could evoke a more natural tutor behavior. In this study, we therefore investigated a tutoring situation with an embodied robot and focused on tutor{\textquoteright}s monitoring behavior. We followed the minimal definition of embodiment by K. Dautenhahn et al. to quantify the difference in embodiment between these two systems 6. Accordingly, the Degrees of Embodiment (DOM) are calculated as:DOMS,E = f (x, y, t), where system S in respect to an environment E is calculated by a function f of the vectors x and y and the time t. x describes the number of sensors, the detected modalities of the sensors and the channels of information provided by the sensors, y describes the degree of freedom (DoF) of the robot. In our experiments E remained unchanged and thus the DOM is not affected by this factor. We argue that in our case, the function f is only dependent on the degrees of freedom of the robot. Possibly, we can give a value which represents the difference in the degree of embodiment (DDOM). Since our goal was to study some characteristics of contingency (7, 5), our dependent variable was the tutor{\textquoteright}s monitoring behavior operationalized by the eye-gaze.}}, author = {{Lohan, Katrin Solveig and Gieselmann, Sebastian and Vollmer, Anna-Lisa and Rohlfing, Katharina and Wrede, Britta}}, booktitle = {{International Conference on Development and Learning}}, publisher = {{IEEE}}, title = {{{Does embodiment affect tutoring behavior?}}}, year = {{2010}}, } @inproceedings{40846, abstract = {{In this paper we characterize the capacity boundary of the two-user multiple-input multiple-output (MIMO) broadcast channel (BC) when the multiantenna terminals use analog beamforming at both sides of the link. Basically, the problem reduces to finding the optimal transmit direction and the optimal power allocation between users to operate at any point on the boundary. We show that both optimization problems can be solved in closed form. First, exploiting the fact that any Pareto optimal pair of rates must also be Pareto optimal of a convex region defined by the channel energies, the optimal transmit direction is shown to be the principal eigenvector of a matrix. Second, the optimal power allocation is obtained by exploiting again the Pareto optimality of the sought pair of rates. Although this paper focuses on the BC, the obtained results also serve to characterize the dual multiple-access channel (MAC). Moreover, this explicit characterization of the boundary can be extended to a $K$-user system for $K>2$. Numerical examples are provided to illustrate the results of the paper, and to show the enlargement of the capacity region achieved by analog beamforming in comparison to a single-input single-output (SISO) BC.}}, author = {{Santamaría, Ignacio and Vía, Javier and Nazábal, Alfredo and Lameiro, Christian}}, booktitle = {{Proc. Int. ICST Conf. Comm. and Networking in China}}, title = {{{Capacity region of the multiantenna Gaussian broadcast channel with analog TX-RX beamforming}}}, year = {{2010}}, } @article{41263, author = {{Maratini, Federica and Pandolfo, Luciano and Bendova, Maria and Schubert, Ulrich and Bauer, Matthias and Rocchia, Massimiliano and Venzo, Alfonso and Tondello, Eugenio and Gross, Silvia}}, issn = {{0020-1669}}, journal = {{Inorganic Chemistry}}, keywords = {{Inorganic Chemistry, Physical and Theoretical Chemistry}}, number = {{2}}, pages = {{489--502}}, publisher = {{American Chemical Society (ACS)}}, title = {{{From Thioxo Cluster to Dithio Cluster: Exploring the Chemistry of Polynuclear Zirconium Complexes with S,O and S,S Ligands}}}, doi = {{10.1021/ic1013768}}, volume = {{50}}, year = {{2010}}, } @article{41262, author = {{Bauer, Matthias}}, issn = {{1089-5639}}, journal = {{The Journal of Physical Chemistry A}}, keywords = {{Physical and Theoretical Chemistry}}, number = {{49}}, pages = {{12870--12874}}, publisher = {{American Chemical Society (ACS)}}, title = {{{The Chemical Information Contained in the EXAFS Debye−Waller Factor: Covalency in Iron(III) Bis-diketonato Complexes}}}, doi = {{10.1021/jp1079718}}, volume = {{114}}, year = {{2010}}, }