نتایج جستجو برای: cumulative exposure model

تعداد نتایج: 2426432  

Journal: :international journal of mathematical modelling and computations 0
navin chandra pondicherry university india department of statistics mashroor ahmad kha

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...

Journal: :Journal of Applied Statistics 2006

Journal: :The Journal of the Acoustical Society of America 2019

ژورنال: سلامت کار ایران 2018

Background and aims: Exposure to the normal hexane can induce dysfunction of the nervous system and color vision impairment. Occupational risk assessment is established according to no observed adverse effect levels (NOAEL). Recently, because of the NOAEL’s limitations, the benchmark responses were applied for risk assessment. The study’s aim is an analysis of benchmark response in occupational...

2014
Peter C Austin Laura Y Park-Wyllie David N Juurlink

PURPOSE Determining the nature of the relationship between cumulative duration of exposure to an agent and the hazard of an adverse outcome is an important issue in environmental and occupational epidemiology, public health and clinical medicine. The Cox proportional hazards regression model can incorporate time-dependent covariates. An important class of continuous time-dependent covariates is...

حاجی آقا علیزاده, حسین, رادمرد, سید عباس, سیفی, رحمن,

Background and purpose: Energy recovery from waste is an appropriate method for waste management and energy production from food waste. Energy production through waste incineration produces significant emission which is a critical threat for environment. Anaerobic digestion of the waste is a suitable way to produce clean energy. This study aimed to investigate the anaerobic digestion from food ...

ژورنال: سلامت و محیط زیست 2013
احمدی انگالی, کامبیز, بابایی, علی اکبر, سلیمانی, زهرا, محمدی, ، محمد جواد, محمدی, بصیر, نیسی, عبدالکاظم, گراوندی, سحر, گودرزی, غلامرضا,

Background and Objectives: According to the WHO estimates, air pollution is accounted for about 800000 premature death of cardiovascular and respiratory disease and lung cancer resulted from air pollution throughout the world approximately 150000 cases of those deaths occur in south Asia. The studies conducting on short-term and long-term effects are reported in terms of admission rate, consult...

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