Stability of stochastic di#erential equations with Markovian switching has recently been discussed by many authors, for example, Basak et al. (J. Math. Anal. Appl. 202 (1996) 604), Ji and Chizeck (IEEE Trans. Automat. Control 35 (1990) 777), Mariton (Jump Linear System in Automatic Control, Marcel Dekker, New York), Mao (Stochastic Process. Appl. 79 (1999) 45), Mao et al. (Bernoulli 6 (2000) 73...

In this paper, adaptive discrete-time low-gain integral control strategies are presented for tracking constant reference signals for infinite-dimensional discrete-time power-stable linear systems. The discrete-time results are applied in the development of adaptive sampled-data low-gain integral control of well-posed infinite-dimensional exponentially stable linear systems. Our results consider...

Recunoaşterea de vorbire în general şi recunoaşterea de cuvinte izolate în particular sunt procese intens computaţionale care consumă mult timp într-un sistem automat de recunoaştere de vorbire. Această problemă este de fapt gâtuirea sistemelor de recunoaştere de vorbire în timp real. Lucrare de faţă abordează optimizarea procesului de recunoaştere prezentând o metodă inovativă de recunoştere î...

A recently introduced automat ic calcium t i t r a to r was evaluated for the determinat ion of calcium in serum and urine. I t was found tha t the results obtained were highly reproducible and there was a very good correlation between the resul ts obtained with the t i t r a to r and other established methods. I t is suggested t ha t the t i t r a to r is probably the ideal ins rument for a sm...

The electric arc furnaces are a very large power load, determining the negative effects on the power quality (harmonics currents, unbalanced load, and reactive power). For a maximum efficiency of the power consumption it is necessary to use an automat system for control the harmonics filters, the reactive power compensation installation and the electrodes position, in order to obtain a high val...

An example of a cellular automat on (CA) is given in which the following problems are NP -complete: (i) determining if a given subconfigurati cn s can be gener ated af ter [s] t ime steps, (ii) determining if a given eubccnfigurat ion 8 will rec ur afte r lsi t ime steps, (iii) determining if a given te mporal sequence of state s 8 can be generated in lsi time steps. It is also found that the C...

Rozšírenie krízy COVID-19 malo vážny vplyv na železničných dopravcov z dôvodu výrazného zníženia dopytu po službách železničnej dopravy. Niektorí dopravcovia čelili značným problémom s likviditou, veľkým stratám a v krajnom prípade riziku úpadku. V tomto období bola koronakrízou postihnutá najmä železničná osobná doprava. prvej vlne pandémie, keby bol zavedený zákaz vychádzania sa tak zrušilo v...

It is well known that in many particular systems, the upper bound on a certain time-varying delay that preserves the stability may be higher than the corresponding bound for the constant delay. Moreover, sometimes oscillating delays improve the performance (Michiels, W., Van Assche, V. & Niculescu, S. (2005) Stabilization of time-delay systems with a controlled time-varying delays and applicati...

All the social networks can be modeled as a graph, where each roles as vertex and each relationroles as an edge. The graph can be show as G = [V;E], where V is the set of vertices and E is theset of edges. All social networks can be segmented to K groups, where there are members in eachgroup with same features. In each group each person knows other individuals and is in touch ...