نتایج جستجو برای: parameters uncertainly

تعداد نتایج: 578758  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم 1391

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...

2011
Shifei DING Jinrong CHEN Xinzheng XU Jianying LI S. Ding

The rough neural networks (RNNs) are the neural networks based on rough set and one kind of hot research in the artificial intelligence in recent years, which synthesize the advantage of rough set to process uncertainly question: attributes reduce by none information losing then extract rule, and the neural networks have the strongly fault tolerance, self-organization, massively parallel proces...

Journal: :AIP Advances 2022

An analogy between the thermodynamic inequalities presented by Nicholson et al. [Nat. Phys. 16, 1211 (2020)] and Yoshimura Ito [Phys. Rev. Res. 3, 013175 (2021)] is discussed. As a result, time–energy uncertainty relation in chemical thermodynamics terms of Gibbs free energy potential derived. It numerically demonstrated that uncertainly holds model system oscillatory Brusselator reactions. Our...

Journal: :Transactions of the Institute of Systems, Control and Information Engineers 2020

Journal: :Symmetry 2022

There are a variety of degradation models in the literature, each with certain effect random variation around mean path on time-to-failure device being degraded. To assess dependence that exerts resulting time-to-failure, this paper presents copula functions for time-to-failure-based respect to two well-known models, namely, multiplicative model and additive model. The implied case have explici...

Journal: :American journal of human genetics 1998
B Rannala M Slatkin

In this paper a theory is developed that provides the sampling distribution of alleles at a diallelic marker locus closely linked to a low-frequency allele that arose as a single mutant. The sampling distribution provides a basis for maximum-likelihood estimation of either the recombination rate, the mutation rate, or the age of the allele, provided that the two other parameters are known. This...

Journal: :Journal of reliability and statistical studies 2023

Statistical distributions are of great interest for actuaries in modelling and fitting the distribution various data sets. It can be used to present a description risk exposure on investment, where level determined by “key indicators” that usually functions statistical model. Financial mathematicians actuarial scientists often use such key indicators determine degree which particular company is...

2001
Keiko Tanaka

By creating a single market and introducing competition and the de facto global standard, GSM, the European Union (EU) achieved economies of scale and has been the world's leader in the mobile communications sector. A number of interrelated issues surrounding the third-generation (3G) system have recently become visible, however. The first indication is the high 3G spectrum license prices mobil...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1389

there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...

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