نتایج جستجو برای: controlling measures
تعداد نتایج: 481443 فیلتر نتایج به سال:
New coronavirus as a pandemic threatens whole world. This virus as a member of coronavirus family has new and unknown characteristics and no vaccine or treatment agent has been developed for this infectious disease. Regarding the successful experience of public health measures in SARS outbreak controlling and haltering, the infected countries have applied these proceedings widely to control new...
Introduction: COVID-19, which appeared in December 2019, has impressed the whole world. The corona virus had far-reaching effects on all health care systems and has had a direct impact on almost all areas of human life in all countries of the world, which has led countries to take various public and social health measures. Making decisions during the coronavirus pandemic has numerous challenges...
in this paper we investigate the effects of broadband infrastructure providing high speed internet, on economic growth in developing countries. we have used two different broadband measures to classify developing countries into two groups for the period 1999-2008. by using logistic diffusion model and iv approach, a nonlinear diffusion model is specified. differences in ceiling of diffusion cur...
Specifications of accessibility indices range from simple minimum travel-time indices, to measures of cumulative opportunities within specified distance or time thresholds, to maximum utility measures. This paper presents models relating a variety of general accessibility indices for the Dallas-Fort Worth region of Texas to property valuations for single-family dwelling units and commercial uni...
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