نتایج جستجو برای: failure mode

تعداد نتایج: 585682  

1992
David Powell

A method is proposed for the formal analysis of failure mode assumptions and for the evaluation of the dependability of systems whose design correctness is conditioned on the validity of such assumptions. Formal definitions are given for the types of errors that can affect items of service delivered by a system or component. Failure mode assumptions are then formalized as assertions on the type...

2013
Shinichi Ogawa Muhannad Bakir Fei Liu Benjamin Fletcher Eric Joseph Yu Zhu Jemima Gonsalves William Price Gregory Fritz Sebastian Engelmann Adam Pyzyna Zhen Zhang Cyril Cabral Michael Guillorn

In semiconductor world, there is a new paradigm shift from chip-scaling to system-scaling to meet the ever-increasing electronic system demands in power saving, performance, and functionality (including memory bandwidth) increase, form factor improvement and cost reduction. This shift is also triggered by the growing concerns for industry to sustain Moore's Law. Innovations on wafer-...

In this paper a new method to determine the fracture properties and strain energy release rate for Carbon- Polyester composite has been introduced.  Fracture characteristics such as critical stress intensity factor and critical strain energy release rate for mode I, mode II and mixed mode loading were determined using Arcan type specimen. 130 layers of carbon fiber polyester woven composite wit...

This paper proposes a new sub-threshold low power 9T static random-access memory (SRAM) cell compatible with bit interleaving structure in which the effective sizing adjustment of access transistors in write mode is provided  by isolating writing and reading paths. In the proposed cell, we consider a weak inverter to make better write mode operation. Moreover applying boosted word line feature ...

Journal: :iranian red crescent medical journal 0
abdolreza rajaeefard department of epidemiology, school of health, shiraz university of medical sciences, shiraz, ir iran; department of epidemiology, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7137251001, fax: +98-7137260225 mohammad ghorbani department of epidemiology, school of health, shiraz university of medical sciences, shiraz, ir iran mohammad ali babaee baigi cardiovascular research center, shiraz university of medical sciences, shiraz, ir iran hamidreza tabatabae department of epidemiology, school of health, shiraz university of medical sciences, shiraz, ir iran

conclusions in this study, sick sinus syndrome and pacemaker mode followed by syncope were independently associated with increased mortality. results survival data were available for 1030 (80%) patients (median age = 71 years [5th to 95th percentile range: 26 - 86 years]) and follow-up was completed for 84.28% of them. according to the results, 56% of the patients had received dual-chamber syst...

Journal: :journal of dentistry, shiraz university of medical sciences 0
ali asghar alavi dept. operative dentistry and biomaterials of research center, school of dentistry, shiraz university of medical sciences, shiraz, iran. zeinab behroozi dept. of orthodontic, school of dentistry, yasuj university of medical sciences, yasuj, iran. farid nik eghbal dept. operative dentistry, school of dentistry, yasuj university of medical sciences, yasuj , iran.

statement of the problem: porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. in restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. purpose: the present study aimed to investigate the shear bond strength of porcelain lam...

1999
John P. Dempsey Colin Fox Andrew C. Palmer

A two-dimensional hydrodynamic ice-slope interaction problem is formulated in this paper. The solution of this elastohydrodynamic problem will give the desired ice force. The main objective is to determine the influence that ice sheet velocity, slope angle, and ice-structure friction have on the ice force. A transition in failure mode is often observed to occur at a certain velocity (named the ...

2008
D. Pandey Sanjay Kumar Tyagi Vinesh Kumar S. K. Tyagi

The fuzzy sets possess natural capability to capture measurement uncertainty as a part of experimental data. Therefore the uncertainties of various kinds involved in system failure analysis may be adequately addressed using the concept of fuzzy sets. Fonseca et al developed and implemented fuzzy reasoning algorithm via an expert system to assess the likelihood of equipment failure mode. The alg...

Abstract Background and aims: Nowadays with increasing global competition, companies apply several scientific methods to identify, assess and remove potential failures in production process. The main goal of this study was identification and analysis of potential failure modes in a hydraulic pump manufacturing company by using combination of interval valued fuzzy Analytic network process (IVF-...

ژورنال: :journal of dental school, shahid beheshti university of medical sciences 0
بهشته ملک افضلی beheshte malekafzali dental school, shahid beheshti university of medical sciences, tehran-iran ([email protected])دانشکده و مرکز تحقیقات دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی امیر قاسمی amir ghassemi dental school, shahid beheshti university of medical sciences, tehran - iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی شیوا رضوی shiva razavi dental school, ghazvin university of medical sciences, ghazvin - iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی قزوین.

زمینه و هدف: برای انتخاب یک ماده ترمیمی دندان پزشک باید معیارهای متعددی را برای هر موقعیت در نظر داشته باشد. یکی از این معیارها و ویژگی ها، استحکام باند میان ماده ترمیمی و دندان می باشد. برقراری باند مستحکم و دایمی به مینا و عاج، ویژگی مطلوب یک ماده ترمیمس است که از ریزنشت و عواقب مضر آن جلوگیری می کند. بنابراین این مطالعه با هدف مقایسه استحکام میکروبرشی ناحیه ای s.e bond به عاج دندان های شیری ...

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