نتایج جستجو برای: life model
تعداد نتایج: 2762326 فیلتر نتایج به سال:
Introduction: The purpose of this study was to determine the relationships of positive psychological functions using structural equations modeling. The statistical population of this study included all mothers of children with cerebral palsy in North Khorasan Province in 2017 and 2018. Methods: The samples were selected by sampling method [105 persons]. Data were collected using eight questionn...
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
The purpose of this study was testing of indirect effect of work-family conflict on life satisfaction of Shiraz hospitals nurses (340 persons) through testing of a multi-mediator model. Using a multi-mediator approach, indirect effect of work-family conflict on life satisfaction was simultaneously tested through two mediators of job satisfaction and family satisfaction. In this research it was ...
this paper presents the fatigue life behavior of hub using random vibration based on road roughness. the main objectives of this study are to predict the fatigue life and to identify the critical location for evaluating fatigue damage. asphalt road surface profiles obtained in favorable circumstances by topography cameras and in according road classification iso 2631-1estimate road roughness su...
background: women-headed households are more exposed to social damages than other women. such condition remarkably influences the women's health-related life quality. the present study is aimed to investigate the effect of an educational intervention in quality of life of women-headed households under protection of tehran welfare organization, in 2015. methods: in this quasi-experimental stud...
background: women-headed households are more exposed to social damages than other women. such condition remarkably influences the women’s health-related life quality. the present study is aimed to investigate the effect of an educational intervention in quality of life of women-headed households under protection of tehran welfare organization, in 2015. methods: in this quasi-experimental stud...
in this paper, we consider an i.e., multiple step-stress accelerated life testing (alt) experiment with unequal duration of time . it is assumed that the time to failure of a product follows rayleigh distribution with a log-linear relationship between stress and lifetime and also we assume a generalized khamis-higgins model for the effect of changing stress levels. taking into account that the...
In this paper, the causes of the crack initiation in cast iron bullion moulds in Meybod Steel Corporation are investigated and then some new geometrical models are presented to replace the current moulds. Finally, among the new presented models and according to the life assessment, the best model is selected and suggested as the replaced one. For this purpose, the three recommended moulds were ...
In real life scientific and engineering problems decision making is common practice. Decision making include single decision maker or group of decision makers. Decision maker’s expressions consists imprecise, inconsistent and indeterminate information. Also, the decision maker cannot select the best solution in unidirectional (single goal) way. Therefore, proposed model adopts decision makers’ ...
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, ...
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