نتایج جستجو برای: chaos numbers

تعداد نتایج: 219430  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1380

هدف این پایان نامه تعیین تعداد مولدهای مینیمال ایده آلها در یک حلقه (جابجایی، یکدار، موضعی و نوتری) است، هر چند تعیین دقیق تعداد مولدها در حالتهایی خاص امکان پذیر است اما در حالتهای کلی روش های موجود بدست آوردن کرانهای مختلف برای تعداد مولدها است. مرجع اصلی این پایانامه ‏‎[1]‎‏ می باشد، به علاوه از نتایج جدیدی که در مرجع ‏‎‏‎[2]‎‏ نیز آمده استفاده کرده ایم. ‏‎[1]. j. sally. numbers of generator...

Journal: :Boletim da Sociedade Paranaense de Matemática 2021

Chaos optimization algorithms (COAs) usually utilize different chaotic maps(logistic, tent, Hénon, Lozi,...) to generate the pseudo-random numbers mapped as design variables for global optimization. In this paper we are going propose new technique improve algorithm by using some transformations modify density of map instead changing it.

L. Malekani M. A. Ghorbani M.T. Alami

Analyses and investigations on river flow behavior are major issues in design, operation and studies related to water engineering. Thus, recently the application of chaos theory and new techniques, such as chaos theory, has been considered in hydrology and water resources due to relevant innovations and ability. This paper compares the performance of chaos theory with Anfis model and discusses ...

Journal: :Frontiers in photonics 2023

Semiconductor lasers with optical feedback can produce plentiful non-linear dynamics, including periodic and chaotic oscillations, which are usually applied to microwave signals physical random number generation, respectively. Chaotic semiconductor especially successful in generating numbers compared pseudorandom generated by a computing process. We report self-chaotic microlaser based on the i...

Journal: :Stochastic Processes and their Applications 2021

We consider weakly interacting jump processes on time-varying random graphs with dynamically changing multi-color edges. The system consists of a large number nodes in which the node dynamics depends joint empirical distribution all other and edges connected to it, while edge only corresponding it connects. Asymptotic results, including law numbers, propagation chaos, central limit theorems, ar...

2004
R L Dewar

Informed by insights from quantum chaos theory, three approaches for estimating finite-Larmor-radius (FLR) stabilization of ideal magnetohydrodynamic (MHD) instabilities are discussed: phase space criteria based on the Weyl formula, “pseudo-FLR” modifications of MHD to suppress large perpendicular wavenumbers, and inclusion of drift corrections to the dispersion relation. PACS numbers: 52.35.Bj...

Journal: :iranian journal of science and technology (sciences) 2014
r. khoshsiar ghaziani

this paper investigates the dynamics and stability properties of a discrete-time lotka-volterra type system. we first analyze stability of the fixed points and the existence of local bifurcations. our analysis shows the presence of rich variety of local bifurcations, namely, stable fixed points; in which population numbers remain constant, periodic cycles; in which population numbers oscillate amo...

Journal: :J. Multivariate Analysis 2014
Jean-Marc Bardet Ciprian Tudor

The purpose of this paper is to estimate the self-similarity index of the Rosenblatt process by using the Whittle estimator. Via chaos expansion into multiple stochastic integrals, we establish a non-central limit theorem satisfied by this estimator. We illustrate our results by numerical simulations. 2000 AMS Classification Numbers: Primary: 60G18; Secondary 60F05, 60H05, 62F12.

2003
Jose Perez Carson Jeffries

A previous paper,1 denoted by I, reported observation of universal chaotic behavior for a driven nonlinear semiconductor oscillator which shows successive period-doubling bifurcations as a route to chaos.2 Semiquantitative agreement was observed for several universal numbers computed from simple nonlinear finite difference equations of the Feigenbaum universality class, which includes the logis...

1999
Luca Salasnich

Spatially homogeneous field theories are studied in the framework of dynamical system theory. In particular we consider a model of inflationary cosmology and a Yang–Mills–Higgs system. We discuss also the role of quantum chaos and its application to field theories. PACS Numbers: 11.15.-q; 98.80.Cq; 05.45.+b 1 Electronic address: [email protected]

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