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Communications in Computer and Information Science 2014年 431卷 187-196页

作者： Sawerwain, Marek Wiśniewska, Joanna Institute of Control and Computation Engineering University of Zielona Góra Licealna 9 Zielona Góra 65-417 Poland Institute of Information Systems Military University of Technology Kaliskiego 2 00-908 Warsaw Poland

ISBN: (纸本)9783319079400

At present, the spin chains are discussed as the solution which may be used in future to construct quantum communication networks. In this paper the definition of XY-type Hamiltonian is presented. The Hamiltonian realizes the transfer of information in a one-dimensional spin chain, which is built of generalised units of quantum information - so-called qudits. The main presented example in the paper shows that the proposed Hamiltonian's definition allows generating the entanglement between boundary elements of the chain. The potentiality of entanglement generation is a very important feature of future quantum communication networks. The paper also contains a numerical example for analyzing the level of entanglement with use of CCNR criterion. © Springer International Publishing Switzerland 2014.

关键词： Hamiltonians

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Particle systems-based riverbed modelling over a terrain with hardness layer 22

Particle systems-based riverbed modelling over a terrain wit...

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22nd International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision, WSCG 2014 - in co-operation with EUROGRAPHICS Association

作者： Warszawski, Korneliusz K. Nikiel, Slawomir S. Faculty of Electrical Engineering Computer Science and Telecommunications University of Zielona Gora ul. Szafrana 2 Zielona Gora65-246 Poland Institute of Control and Computation Engineering University of Zielona Gora ul. Szafrana 2 Zielona Gora65-246 Poland

ISBN: (纸本)9788086943725

This paper proposes a method that applies particle systems to simulate results of hydrological erosion caused by spout, like riverbeds. The terrain model is divided into two layers. The first one stores heights data (typical heightfield) while the second is reserved for hardness data. This data structure enables fast and simple implementation of terrain deformation. We present the construction of a particle system terrain modifier, its main attributes and how they influence the final product of the modelling process. The proposed technique behaves like in classical particle systems. It uses emitter as element that control starting location, direction and quantity of particles in a given simulation environment. We choose parameters for particles such as: the current position, directional angle, linear velocity, rotation angle, rotation velocity and the size which define its zone of influence for landscape modification processes. Each emitted particle is moving (rolling) over the surface of terrain structure making deformations at its current position. Scale of the modifications depends on particle parameters and landscape structure susceptibility for modifications process under the particle influence zone. The proposed method is not intended to simulate physically erosion process, but focuses on its results for exploitation in virtual environments in real-time simulations and rapid prototyping of virtual terrains.

关键词： Hardness

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Application of a repetitive process setting to design of monotonically convergent iterative learning control

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Journal of Physics: Conference Series 2015年第1期659卷

作者： Marcin Boski Wojciech Paszke Faculty of Computer Science Electrical Engineering and Control Engineering University of Zielona Góra ul. Szafrana 2 65-516 Zielona Góra Poland Institute of Control and Computation Engineering University of Zielona Góra ul. Szafrana 2 65-516 Zielona Góra Poland

This paper deals with the problem of designing an iterative learning control algorithm for discrete linear systems using repetitive process stability theory. The resulting design produces a stabilizing output feedback controller in the time domain and a feedforward controller that guarantees monotonic convergence in the trial-to-trial domain. The results are also extended to limited frequency range design specification. New design procedure is introduced in terms of linear matrix inequality (LMI) representations, which guarantee the prescribed performances of ILC scheme. A simulation example is given to illustrate the theoretical developments.

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Upscaling the coupled water flow and heat transfer in the subsurface – Comparison between numerical and field data

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AIP Conference Proceedings 2015年第1期1684卷

作者： R. F. Sviercoski Y. Efendiev B. Mohanty Y. J. Yuan 1Institute for Information and Communication Technologies Bulgarian Academy of Sciences Sofia Bulgaria 2Institute for Scientific Computation Texas A & M University College Station USA 3Biological and Agricultural Engineering Texas A & M University College Station USA 4Department of Mathematics Universidade Federal do Parana Brazil

The simultaneous movement of liquid water, water vapor, and heat in the vadose zone plays a critical role in the overall water and energy balance of the near surface environment. Moisture near the soil surface is influenced by evaporation, precipitation, liquid water flow, and water vapor flow, most of which are strongly coupled. The demand for mathematical models that take into account spatial and temporal scales for the shallow soil are now-a-days more imperative given that: (a) the critical role that such processes play in the global water and energy balance; (b) the interplay between spatial and temporal scales in the near surface region is not well understood. The new contributions in this paper are: the coupled model is revisited and some modifications are proposed aiming to represent the surface/subsurface interaction more accurately; the spatial upscaled coupled model is presented. The models are validated by comparing numerical results between the fine-scale and upscaled models and data for both, moisture and temperature. The field data comes from a detailed controlled experiment from Riverside-CA, with measurements taken at 2, 7 and 12 cm below the surface.

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High performance computing and quantum trajectory method in CPU and GPU systems

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Journal of Physics: Conference Series 2015年第1期574卷

作者： Joanna Wiśniewska Marek Sawerwain Wiesław Leoński Institute of Information Systems Faculty of Cybernetics Military University of Technology Kaliskiego 2 00-908 Warsaw Poland Institute of Control and Computation Engineering University of Zielona Góra Licealna 9 65-417 Zielona Góra Poland Quantum Optics and Engineering Division Institute of Physics University of Zielona Góra Licealna 9 Zielona Góra 65-417 Poland

Nowadays, a dynamic progress in computational techniques allows for development of various methods, which offer significant speed-up of computations, especially those related to the problems of quantum optics and quantum computing. In this work, we propose computational solutions which re-implement the quantum trajectory method (QTM) algorithm in modern parallel computation environments in which multi-core CPUs and modern many-core GPUs can be used. In consequence, new computational routines are developed in more effective way than those applied in other commonly used packages, such as Quantum Optics Toolbox (QOT) for Matlab or QuTIP for Python.

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Stability of 2D Roesser models: Towards a necessary and sufficient LMI condition 8

Stability of 2D Roesser models: Towards a necessary and suff...

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8th International Workshop on Multidimensional Systems, nDS 2013

作者： Bachelier, Olivier Paszke, Wojciech Yeganefar, Nima Mehdi, Driss University of Poitiers LIAS-ENSIP Bâtiment B25 2 rue Pierre Brousse B.P. Poitiers Cedex633 86022 France University of Zielona Gora Institute of Control and Computation Engineering ul.Licealna 9 Zielona Gora65-417 Poland

ISBN: (纸本)9783800735433

This paper is dedicated to the asymptotic stability of 2D discrete Roesser models. Two well-known necesssary and sufficient conditions expressed in terms of characteristic polymials are recalled and their equivalence is proved. Although it is not new result, the provided proof is simpler than those proposed in the literature. These conditions being numerically rather non tractable, a first motivation is to compare these conditions through their sufficient LMI (Linear Matrix Inequalities) relaxations. Actually, the same approach, based upon the S-procedure, is used to derive the two relaxations, which, once again, are proved to be equivalent. However, the second condition offers a different point of view which leads to a modification of the relaxation technique, making the necessity of the LMI condition reachable. © VDE VERLAG GMBH 2013.

关键词： Linear matrix inequalities

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S-procedure for deriving stability conditions of hybrid Roesser models

S-procedure for deriving stability conditions of hybrid Roes...

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2011 7th International Workshop on Multidimensional (nD) Systems, nDS 2011

作者： Ghamgui, Mariem Yeganefar, Nima Paszke, Wojciech Bachelier, Olivier Mehdi, Driss University of Poitiers LAII-ENSIP Bâtiment B25 2 rue Pierre Brousse 86022 Poitiers Cedex France Institute of Control and Computation Engineering University of Zielona Góra ul. Podgórna 50 65-246 Zielona Góra Poland

In this paper, the so-called full block S-procedure is applied to propose a general methodology that enables the derivation of LMI stability conditions for a quite general class of multidimensional linear systems, nam... 详细信息

ISBN: (纸本)9781612848167

关键词： Linear systems

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Dynamic vehicle routing for robotic systems

Dynamic vehicle routing for robotic systems

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作者： Bullo, Francesco Frazzoli, Emilio Pavone, Marco Savla, Ketan Smith, Stephen L. Center for Control Dynamical Systems and Computation Department of Mechanical Engineering University of California in Santa Barbara Santa Barbara CA 93106 United States Laboratory for Information and Decision Systems Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA 02139 United States Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 United States Laboratory for Information and Decision Systems Massachusetts Institute of Technology Cambridge MA 02139 United States Department of Electrical and Computer Engineering University of Waterloo Waterloo ON N2L 3G1 Canada

Recent years have witnessed great advancements in the science and technology of autonomy, robotics, and networking. This paper surveys recent concepts and algorithms for dynamic vehicle routing (DVR), that is, for the automatic planning of optimal multivehicle routes to perform tasks that are generated over time by an exogenous process. We consider a rich variety of scenarios relevant for robotic applications. We begin by reviewing the basic DVR problem: demands for service arrive at random locations at random times and a vehicle travels to provide on-site service while minimizing the expected wait time of the demands. Next, we treat different multivehicle scenarios based on different models for demands (e.g., demands with different priority levels and impatient demands), vehicles (e.g., motion constraints, communication, and sensing capabilities), and tasks. The performance criterion used in these scenarios is either the expected wait time of the demands or the fraction of demands serviced successfully. In each specific DVR scenario, we adopt a rigorous technical approach that relies upon methods from queueing theory, combinatorial optimization, and stochastic geometry. First, we establish fundamental limits on the achievable performance, including limits on stability and quality of service. Second, we design algorithms, and provide provable guarantees on their performance with respect to the fundamental limits. © 2011 IEEE.

关键词： Adaptive algorithms

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Future challenges

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作者： Miettinen, Kaisa Deb, Kalyanmoy Jahn, Johannes Ogryczak, Wlodzimierz Shimoyama, Koji Vetschera, Rudolf Department of Mathematical Information Technology University of Jyväskylä P.O. Box 35 Agora FI-40014 Finland Department of Mechanical Engineering Indian Institute of Technology Kanpur 208 016 India Department of Mathematics University of Erlangen-Nürnberg Martensstrasse 3 Erlangen 91058 Germany Institute of Control and Computation Engineering Faculty of Electronics and Information Technology Warsaw University of Technology ul. Nowowiejska 15/19 Warsaw 00-665 Poland Institute of Fluid Science Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan Department of Business Administration University of Vienna Brünnerstrasse 72 1210 Wien Austria Helsinki School of Economics P.O. Box 1210 FI-00101 Helsinki Finland

ISBN: (纸本)3540889078

Many important topics in multiobjective optimization and decision making have been studied in this book so far. In this chapter, we wish to discuss some new trends and challenges which the field is facing. For brevity, we here concentrate on three main issues: new problem areas in which multiobjective optimization can be of use, new procedures and algorithms to make efficient and useful applications of multiobjective optimization tools and, finally, new interesting and practically usable optimality concepts. Some research has already been started and some such topics are also mentioned here to encourage further research. Some other topics are just ideas and deserve further attention in the near future. © 2008 Springer Berlin Heidelberg.

关键词： Multiobjective optimization

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EXISTENCE AND UNIQUENESS AND STABILITY OF SOLUTIONS FOR STOCHASTIC IMPULSIVE SYSTEMS

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Journal of Systems Science & Complexity 2007年第1期20卷 149-158页

作者： Bin LIU Xinzhi LIU Xiaoxin LIAO Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 Department of Information and Computation Science Zhuzhou Institute of Technology Zhuzhou 412008 China Department of Applied Mathematics University of Waterloo Waterloo Ontario N2L 3G1 Canada. Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

This paper studies the existence, uniqueness, and stability of solutions for stochastic impulsive systems. By employing Lyapunov-like functions, some sufficient conditions of the global existence, uniqueness, and stability of solutions for stochastic impulsive systems are established. Furthermore, the results are specialized to the case of linear stochastic impulsive systems. Finally, some examples are given to illustrate the applications of our theory.

关键词： Ito＇s formula Lyapunov-like function stability stochastic impulsive system.

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