نتایج جستجو برای: زیر سیستم k out of n

تعداد نتایج: 21392492  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

قاسم چراغ مانی شریفی,

در این مقاله مدل جدیدی برای مسئله تخصیص افزونگی با ساختار سری موازی و زیر سیستمهای - k-out-of-n با در نظر گرفتن نرخ خرابی وابسته به تعداد اجزای در حال کاار اراهاه ما یشاود .در ایان ناون نارخ خرابای بااافزایش تعداد اجزای در حال کار به دلیل تقسیم بار )فشار( بر روی تعداد بیشتری از اجزاء، نرخ خرابی هر یا کاز اجزاء کاهش مییابد. همچنین برای هر یک از زیر سیستمها دو نون سیاست افزونگی آمااده باه کاار سا...

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

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Journal: :Oper. Res. Lett. 2009
Josep Freixas María Albina Puente

We introduce consecutive expansions of k–out–of–n systems, which have the property that components are totally ordered by the node criticality relation and with respect to well-known structural importance measures. We propose some formulae to easily compute these measures and study the hierarchies induced for them for large systems.

2007
JORGE NAVARRO SERKAN ERYILMAZ

In this paper we study reliability properties of consecutive-k-out-of-n systems with exchangeable components. For 2k ≥ n, we show that the reliability functions of these systems can be written as negative mixtures (i.e. mixtures with some negative weights) of two series (or parallel) systems. Some monotonicity and asymptotic properties for the mean residual lifetime function are obtained and so...

Journal: :Multiple-Valued Logic and Soft Computing 2010
Hong-Zhong Huang Yanfeng Li Yu Liu

A preliminary analysis of the posbist reliability of typical system structures was provided by Cai et al. [Fuzzy Sets and Systems 42: 145–172 (1991) and Microelectronics and Reliability 35(1): 49–56 (1995)]. In this paper, we provide a detailed analysis of the posbist reliability of k-out-of-n:G system structures. Expressions of the posbist reliability of k-out-of-n:G system is developed. It is...

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