نتایج جستجو برای: activities factors
تعداد نتایج: 1412557 فیلتر نتایج به سال:
BACKGROUND Zika virus transmission dynamics in urban environments follow a complex spatiotemporal pattern that appears unpredictable and barely related to high mosquito density areas. In this context, human activity patterns likely have a major role in Zika transmission dynamics. This paper examines the effect of host variability in the amount of time spent outdoors on Zika epidemiology in an u...
The rapid changes in oil prices in last five years forced companies to rethink about their manufacturing process. This paper examines application of DEA and revenue management models for measuring and improving of productivity of a Canadian packaging company. The critical success failure factors are also highlighted.
OBJECTIVES The purpose of this study was to test empirically two major conceptualizations of parent-child relations in later adulthood-intergenerational solidarity-conflict and ambivalence paradigms-and their predictive validity on elders' quality of life using comparative cross-national data. METHODS Data were from a sample of 2,064 elders (aged 75 and older) from the five-country OASIS stud...
The present study examined the relationships between different types of social and cognitive activities and different types of episodic and semantic memory. A total of 794 adult men and women from five age cohorts (aged 65-85 at baseline), participating in the longitudinal Betula project on ageing, memory, and health, were included in the study. The participants were studied over 10 years (1995...
Understanding drivers of population fluctuation, especially for agricultural pests, is central to the provision of agro-ecosystem services. Here, we examine the role of endogenous density dependence and exogenous factors of climate and human activity in regulating the 37-year population dynamics of an important agricultural insect pest, the cotton bollworm (Helicoverpa armigera), in North China...
Research on biological invasions has increased rapidly over the past 30 years, generating numerous explanations of how species become invasive. While the mechanisms of invasive species establishment are well studied, the mechanisms driving abundance patterns (i.e. patterns of population density and population size) remain poorly understood. It is assumed that invasive species typically have hig...
Background and Aim: In several KT plans the researcher self evaluation is basis of researchers KT activities measurement so the aim of this study was the validity of researchers self assessment about their own activities in KT. Materials and Methods: The valid and reliable questionnaire was filled by 40 Golestan University of Medical Sciences researchers. In this questionnaire researchers were ...
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