نتایج جستجو برای: reliability theory

تعداد نتایج: 915781  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1393

this studyinvestigated therelations between examinees’ academic knowledge and theirperformanceonreading section of ielts and toefl (ibt) through using generalizabilitytheory. g-theory was utilized to investigate the effects of subtest, test items, participants and academic background on the reliability of ielts and toefl (ibt) score. tosamplethe subjectsofthissurvey,a placement testwasadministe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

even though, to date, a lot of studies have been conducted on the subject of politeness theory, there are very few studies regarding the applicability of this theory to translation between english and persian which shows the reason behind conducting the present study. this study was carried out with the aim of highlighting whether there is any difference between english and persian methods of u...

Journal: :iranian journal of psychiatry 0
seyyede zohreh ziatabar ahmadi department of speech & language pathology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran shohreh jalaie biostatistics division, school of rehabilitation sciences, tehran university of medical sciences, tehran, iran hassan ashayeri department of rehabilitation basic sciences, school of rehabilitation sciences, iran university of medical sciences, tehran, iran

objective: theory of mind (tom) or mindreading is an aspect of social cognition that evaluates mental states and beliefs of oneself and others. validity and reliability are very important criteria when evaluating standard tests; and without them, these tests are not usable. the aim of this study was to systematically review the validity and reliability of published english comprehensive tom tes...

2007
Bent Natvig

One inherent weakness of traditional reliability theory (see eqr 340) is that the system and the components are always described just as functioning or failed. The first attempts to replace this by a theory for multistate systems of multistate components were made in the late 1970s. By the mid 1980s the basic theory in this area was established. The objective of this article is to introduce con...

Journal: :The Annals of Mathematical Statistics 1970

Journal: :مهندسی صنایع 0
پرویز فتاحی دانشیار مهندسی صنایع، دانشگاه الزهرا امیر سامان خیرخواه دانشیار مهندسی صنایع، دانشگاه بوعلی سینا بهمن اسمعیل نژاد کارشناس ارشد مهندسی صنایع، دانشگاه بوعلی سینا

in this study, the stochastic cell formation problem with developing model within queuing theory with stochastic demand, processing time and reliability has been presented. machine as server and part as customer are assumed where servers should service to customers. since, the cell formation problem is np-hard, therefore, deterministic methods need a long time to solve this model. in this study...

Journal: :international journal of industrial engineering and productional research- 0
parviz fattahi hamedan bahman ismailnezhad hamedan

in this paper, a stochastic cell formation problem is studied using queuing theory framework and considering reliability. since cell formation problem is np-hard, two algorithms based on genetic and modified particle swarm optimization (mpso) algorithms are developed to solve the problem. for generating initial solutions in these algorithms, a new heuristic method is developed, which always cre...

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