abstract   background: due to the high incidence of breast cancer and the effect of its early diagnosis on decreasing morbidity and mortality, we used the gail model to study breast cancer risk in iranian women.   methods: this study was done in a simple randomized way. participants were 2000 iranian women older than 35 years old. the questionnaire consisted of demographic data such as age, rac...

the aim of this study was to identify and prioritize the risky behaviors and explore the newly emerging pi related to egyptian habits that may lead to hcv transmission.from january 2011 until january 2012, a case control study matched on socio demographic factors was conducted comparing 540 hepatitis c patients and their contacts who were hcv serologically negative (102 subjects). they were ran...

in the real world, risk and uncertainty are two natural properties in the implementation of mega projects. most projects fail to achieve the pre-determined objectives due to uncertainty. a linear integer programming optimization model was used in this work to solve a problem in order to choose the most appropriate risk responses for the project risks. a mathematical model, in which work structu...

aims: the occurrence of fire in residential buildings , commercial complexes and large and small industries cause physical, environmental and financial damages to many different communities. fire safety in hospitals is sensitive and it is believed that the society takes the responsibility to care sick people . the goal of this study was to use fire risk assessment method for engineering (frame)...

background: the fourth survey of the surveillance system named ‘‘childhood and adolescence surveillance and prevention of adult non-communicable disease’’ (caspian–iv study), was conducted among a national representative sample of iranian students. this paper describes the methods and early findings of this survey.  methods: this nationwide school-based study was conducted in 31 provinces of ir...

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...

abstract using tobit model, this study investigated factors affecting on crop risk frequency of farmers in the north khorasan province. data was collected through interviewing 120 farmers of north khorasan province in 2008. results showed that age, farm ownership and off farm employment affected frequency of risk negatively. non-agricultural activity, participating in a crop supervisory plan an...

Risks are natural and inherent characteristics of major projects. Risks are usually considered independently in analysis of risk responses. However, most risks are dependent on each other and dependent risks are rare in the real world. This paper proposes a model for proper risk response selection from the responses portfolio with the purpose of optimization of defined criteria for projects. Th...