{"title":"Design of laser pulses for STIRAP processes with geometric control techniques","authors":"U. Boscain, G. Charlot","doi":"10.1109/PHYCON.2003.1236993","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1236993","url":null,"abstract":"We apply techniques of geometric control theory to stimulated Raman adiabatic passage (STIRAP) in the rotating-wave approximation (RWA). After reduction to real variables, we develop a systematic way of designing laser pulses to improve the transfer that allows one to reach the target state precisely.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124740113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Control of spatial structures in a semiconductor-gas discharge system with a semi-insulating GaAs cathode","authors":"E. Gurevich, Y. Astrov, H. Purwins","doi":"10.1109/PHYCON.2003.1237027","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1237027","url":null,"abstract":"Nonlinear current transport in transversely extended gas discharge system with a semi-insulating GaAs cathode is studied. The emerging spatial patterns appear in the semiconductor electrode, while the application of a thin gas-discharge gap allows to visualize the patterns. Sequences of scenarios in the pattern formation under changing control parameters are presented. It is experimentally shown that the dynamics of the structure is not noticeably influenced by inhomogeneities of the experimental system. Among results obtained, variation of scenarios under changing the temperature of the GaAs electrode are presented.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126883893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chaotic behavior by the air flow of the breath of human being","authors":"G. Lukyanov, V. Usachev","doi":"10.1109/PHYCON.2003.1236834","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1236834","url":null,"abstract":"This paper presents an investigation of the relations between the regimes of the air flow within the men's nose and his breath diseases. The regimes of the air flow has investigated on the basic of analysis of chaotic behavior, also with the methods of deterministic chaos analysis. The results of study indicated that the chaotic invariants (for example correlation dimension) can be used for the medical diagnostic of the men's breath diseases.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127136637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hybrid control of a cart-pendulum system with restrictions on the travel","authors":"D. Gromov, J. Raisch","doi":"10.1109/PHYCON.2003.1237083","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1237083","url":null,"abstract":"A globally stabilizing controller for a cart-pendulum system is developed. It is shown that the use of hybrid methods can significantly simplify the procedure of control synthesis in the presence of restrictions on the control signal and on the length of travel. A special feature of the proposed approach is that restrictions are embedded into the control algorithm.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125396604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effective neural network approach to image recognition and control","authors":"G. Ososkov","doi":"10.1109/PHYCON.2003.1236825","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1236825","url":null,"abstract":"A new approach to structuring and training of feed-forward artificial neural networks (ANN) is proposed. That leads to overcome many shortcomings of multilayer perceptrons and ANNs with radial basis functions (RBF-nets). A dynamical training algorithm is developed in order to keep the optimal number of neurons in the hidden layers and to guarantee the finiteness of the training procedure due to individual training of each neuron. Results of applying of the proposed neural network to recognizing frontal images of human faces look very promising and give rise to propose a non-expensive security system.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116357526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wavelets in the propagation of waves in materials with microstructure","authors":"C. Cattani","doi":"10.1109/PHYCON.2003.1237056","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1237056","url":null,"abstract":"The analysis of evolution differential equations (parabolic-hyperbolic) might be considered within the framework of the (harmonic) wavelet theory. In fact, the multiresolution analysis of wavelets seems to be a suitable scheme for the investigation of phenomena, which appears at different scales of approximation. Very often, the approximate solution is expressed in terms of functions which are significant only at a given resolution, and, some time, also the exact solution (like e.g. the D'Alembert solution of the wave equation) shows two characteristic features of wavelets: the dilation (multiscale) and the translation properties. However, from physical point of view, the wavelets still have little interpretations, especially concerning the small details expressing small deviations nearby the steady solution, since there are only a few examples of physical propagation of wavelets. In particular, the wavelet solutions of the dispersive (Klein-Gordon) wave equation show that the multiresolution approach is a kind of approximation that at each (scale) step increases the \"resolution\" of the solution. Thus it seems interesting to investigate this multilevel process that, at each scale (level), adds some more details to the solution. As application, the wavelet solution of the Klein Gordon equations for materials with microstructure, is defined as follows: the dispersive wave solution of the propagation equation is interpreted as a superposition of \"small\" waves on a basic wave. So that the wave propagation will be investigated at each given resolution, by showing that the \"minor\" details of the solution, neglectable at the initial time, have a significant influence on the solution on a long (time) range.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129638933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Difference scheme with instant transition \"from order to chaos\"","authors":"A.F. Goloubentsev, V. M. Anikin, Y.A. Barulina","doi":"10.1109/PHYCON.2003.1236864","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1236864","url":null,"abstract":"The one-dimensional nonlinear difference equation of the first order depending on a parameter is constructed on the infinite interval. Its exact solutions have semi-group properties and demonstrate regular or chaotic behavior for various regions of parameter changing. There is a parameter value that \"provides\" an instant transition \"from order to chaos\". The chaotic regime is characterized by having the invariant density in the form of the Cauchy distribution and the positive Lyapunov exponent In2. The eigenfunction and eigenvalues of the Perron-Frobenius operator for constructed map are found.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123884873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Controllability and diameter of single-input quantum systems","authors":"A. Agrachev, T. Chambrion","doi":"10.1109/PHYCON.2003.1236994","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1236994","url":null,"abstract":"Lie groups formalism and Riemannian techniques are used to describe the attainable set at time T of left invariant single-input control systems on compact semi-simple Lie groups. This gives controllability properties and an estimation of the minimal time needed to transfer a controlled quantum system with a drift front a given initial position to a given final position.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123957734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Singular functions of a nonlinear pendulum on finite time intervals","authors":"L. Mironovsky, X. Y. Petrova","doi":"10.1109/PHYCON.2003.1237084","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1237084","url":null,"abstract":"Concept of singular functions of linear systems introduced in the previous works of the authors is extended to the nonlinear case. Singular functions of the nonlinear pendulum are studied. Three approaches to finding singular functions are considered: the classical variational approach, combined approach of variational calculus and flip-method, and genetic algorithm.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123592729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On two classes of partial stability problems","authors":"V. I. Vorotnikov","doi":"10.1109/PHYCON.2003.1237067","DOIUrl":"https://doi.org/10.1109/PHYCON.2003.1237067","url":null,"abstract":"For nonlinear nonautonomous systems of ordinary differential equations, we consider two basic classes of partial stability problems: (i) problems of stability with respect to part variables of the zero equilibrium position (Lyapunov - Rumyantsev partial stability problems); and (ii) problems of stability of partial equilibrium positions. The corresponding definitions of stability are unified so that the solvability conditions for these two classes of problems are identical in the context of the Lyapunov function method. We present a number of such common stability conditions. Also we consider problem of stability with respect to part variables of partial equilibrium positions. The results are illustrated by examples.","PeriodicalId":438483,"journal":{"name":"2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126393474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}