نتایج جستجو برای: keywords markov chain

تعداد نتایج: 2283096  

2010
Paweł Błażej Paweł Mackiewicz

Many currently used algorithms for protein coding sequences require large learning sets of true genes to estimate sensible values for used parameters which are necessary to make the prediction reasonable. They also fail in recognition of short genes which usually contain weak coding signal. To avoid these problems, we worked out a new algorithm for finding protein coding potential in prokaryoti...

Journal: :research in pharmaceutical sciences 0
mohammadreza amirsadri department of clinical pharmacy and pharmacy practice and isfahan pharmaceutical sciences research center, school of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, i.r. iran. mohammad javad sedighi department of clinical pharmacy and pharmacy practice and isfahan pharmaceutical sciences research center, school of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, i.r. iran.

aspirin is one of the certified medicines commonly used for the secondary prevention of myocardial infarction (mi). aspirin side effects and gastrointestinal bleeding, in particular, have arisen debates on its use for the primary prevention of mi. the present research evaluates the cost-effectiveness of the use of aspirin in the primary prevention of mi among iranian men with average cardiovasc...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1388

چکیده ندارد.

Journal: :journal of biostatistics and epidemiology 0
abbas rahimi-feroushani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran mohammad chehrazi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran and department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran keramat nourijelyani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran reza omani-samani department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran

b a c k g r o u n d & aim: the aim of the current study was to investigate the advantages of bayesian method in comparison to traditional methods to detect best antioxidant in freezing of human male gametes. methods  &  materials:   semen  samples  were  obtained  from  40  men  whose  sperm  had  normal criteria. a part of each sample was separated without antioxidant  as fresh and the remaini...

Journal: :bulletin of the iranian mathematical society 2014
mohamed boualem natalia djellab djamil aïssani

we propose to use a mathematical method based on stochastic comparisons of markov chains in order to derive performance indice bounds‎. ‎the main goal of this paper is to investigate various monotonicity properties of a single server retrial queue with first-come-first-served (fcfs) orbit and general retrial times using the stochastic ordering techniques‎.

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1386

چکیده ندارد.

Journal: :journal of optimization in industrial engineering 2010
behrouz afshar nadjafi salman kolyaei

the problem we investigate deals with the optimal assignment of resources to the activities of a stochastic project network. we seek to minimize the expected cost of the project include sum of resource utilization costs and lateness costs. we assume that the work content required by the activities follows an exponential distribution. the decision variables of the model are the allocated resourc...

In this paper, we obtain the Rényi entropy rate for irreducible-aperiodic Markov chains with countable state space, using the theory of countable nonnegative matrices. We also obtain the bound for the rate of Rényi entropy of an irreducible Markov chain. Finally, we show that the bound for the Rényi entropy rate is the Shannon entropy rate.

2011
Lun Zhang Sheng Fang Jia Mei Wang

In the realistic background of Urban Mass Transit, the paper addresses the applications of Wireless Sensor Networks with emphasis on the integrated evaluation approaches to the applications. Assessment strategies are originally designed, being involved in the indicators and criteria of fundamental functions, adaptability, applicability, Quality of Service and Advancement. Hereafter, evaluation ...

In this paper, absorbing Markov chain models are developed to determine the optimum process mean levels for both a single-stage and a serial two-stage production system in which items are inspected for conformity with their specification limits. When the value of the quality characteristic of an item falls below a lower limit, the item is scrapped. If it falls above an upper limit, the item is ...

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