نتایج جستجو برای: probablistic risk assessment

تعداد نتایج: 1409327  

Journal: :international journal of marine science and engineering 2011
m. r. miri lavasani j. wang z. yang j. finlay

fault tree analysis (fta) as a probabilistic risk assessment (pra) method is used to identify basic causes leading to an undesired event, to represent logical relation of these basic causes in leading to the event, and finally to calculate the probability of occurrence of this event. to conduct a quantitative fta, one needs a fault tree along with failure data of the basic events (bes). someti...

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

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

insurers have in the past few decades faced longevity risks - the risk that annuitants survive more than expected - and therefore need a new approach to manage this new risk. in this dissertation we survey methods that hedge longevity risks. these methods use securitization to manage risk, so using modern financial and insurance pricing models, especially wang transform and actuarial concepts, ...

Journal: :journal of occupational health and epidemiology 0
s karimi zeverdegani department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, iran s barakat department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, iran m yazdi department of statistics and epidemiology, school of health, isfahan university of medical sciences, isfahan, iran

background: the use of chemicals is essential in education resulting in exposure to these pollutant in a variety of chemical and research laboratories. chemical contaminants in chemical laboratories are in different forms and chemical exposure risk assessment is important for choosing appropriate controls in protecting the health of operators, experts and students. for risk assessment in chemic...

Journal: :International Journal of Mathematics and Mathematical Sciences 1997

Journal: :iranian journal of optimization 0
amir amini msc. graduate of industrial engineering, alghadir institute of higher education, tabriz, iran ali zebardast department of economic, faculty of economic and management, urmia university, urmia, iran kiumars shahbazi department of economic, faculty of economic and management, urmia university, urmia, iran

in the process of investment decision making, next to financial indicators many other aspects of investment projects are increasingly often considered. this leads to the multi-criteria evaluation of a project. the advantage of multi-criteria methods is the ability to take into account all (not only financial) aspects of the attractiveness of an investment project. the selection of criteria of p...

Journal: :nursing and midwifery studies 0
zahra moudi faculty of nursing and midwifery, zahedan university of medical sciences, zahedan, ir iran; faculty of nursing and midwifery, zahedan university of medical sciences, zahedan, ir iran. tel: +98-9153411005, fax: +98-5433442481 zhila abed saeedi faculty of nursing and midwifery, shahid beheshti university of medical sciences, tehran, ir iran mahmoud ghazi tabatabaie department of demography and population studies, faculty of social science, university of tehran, tehran, ir iran

conclusions managers and service providers need to know an ordinary woman’s perception of risk to address the gap between current and desired childbirth services and encourage women to use current hospital services. objectives this study explains how baloch women make decisions regarding the risks associated with childbirth at home versus a hospital. this study identifies and defines the factor...

Journal: :iranian journal of medical physics 0
mohammad taghi bahreyni toossi prof., medical physics dept., medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran hassan zarghani ph.d. student of medical physics, faculty of medicine, mashhad university of medical sciences, mashhad, iran

introduction: nowadays ionizing radiation has a considerable contribution in medical diagnostic and treatment. using ionizing radiation is increasing rapidly, so biological effects of ionizing radiation should be considered more. x-rays in the range of diagnostic radiology have hazardous effects and risks that are defined as random effects. these effects obey the lnt hypothesis that occur at lo...

Journal: :journal of occupational health and epidemiology 0
mk darwiesh islamic university-gaza, faculty of science, department of earth sciences, p.o.box 108, gaza, palestine a al-hindi islamic university-gaza, faculty of health sciences, medical laboratory sciences department, p.o.box 108, gaza, palestine

background: a cross-sectional analytic method was used to assess health and safety risks that really matter in restaurants of universities and hospitals in the gaza strip, palestine.  materials and methods: a 40-item questionnaire was completed by workers in all university and governmental hospital restaurants in the gaza strip. another 30-item questionnaire was completed by university students...

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