نتایج جستجو برای: rapid population increase
تعداد نتایج: 1678394 فیلتر نتایج به سال:
Optimal Positioning of Middle Schools within the City of Dehdasht through a Combination of Boolean Logic and FAHP M.A. Firoozi, Ph.D. P. Rahmaani N. Hosseini Shahpariyaan M. Fereydoonnejaad Optimal positioning of schools is of much interest to planners because the rapid increase in population and structural changes within the cities could lead to distribution problems if not fo...
Epidemiologists have long regarded relative risk (RR) as a key measure of association between two binary variables. Yet even when the sample is representative of the population, associations having a RR > 9 may have a relatively small value for Phi (φ < .3). This paper provides additional reasons for using RR instead of φ. (1) Formulas relating φ and RR are derived. A relative φ is constructed;...
A standard assumption in integrated assessment models of climate change is that population and productivity are growing, but at a decreasing rate. We explore the signi cance of the assumption of population and productivity growth for greenhouse gas abatement. After all, there has been no long run slow down in the growth of productivity over the past few centuries, and the rate of population gro...
Background: There has been a rapid global development of the horizontal drilling and hydraulic fracturing process termed fracking. This involves the dispersion of “produced water” which contains naturally occurring radioactive material (NORM) which may contaminate surface water and pose a health risk. Objectives: To investigate association between early (0-28 days) infant mortality by county in...
Mean colors and magnitudes of RR Lyrae stars in 24 fields towards the Galactic bulge from the MACHO database are presented. Accurate mean reddenings are computed for these fields on the basis of the mean colors. The distribution along the line of sight of the RR Lyrae population is examined on the basis of the mean magnitudes, and it is shown that the bulk of the RR Lyrae population is not barr...
The connectivity generated by the Internet is opening new opportunities in service delivery. As a consequence, administrations are forming online alliances in order to deliver integrated value-adding services. However, due to lack of a step-by-step method for identification, classification and further processing of services, the development of such composite eGovernment services across organiza...
INTRODUCTION Much of the world’s chronically poor and malnourished population lives in an increasingly volatile world. The dangerous nexus of climate change, rapid population growth, conflict, and economic stagnation has already pushed several poor regions into states of permanent crisis, even as the rest of the world has enjoyed unprecedented progress against poverty. This disturbing state of ...
this study considers the level of increase in customer satisfaction by supplying the variant customer requirements with respect to organizational restrictions. in this regard, anp, qfd and bgp techniques are used in a fuzzy set and a model is proposed in order to help the organization optimize the multi-objective decision-making process. the prioritization of technical attributes is the result ...
extended abstract 1. introduction after industrial revolution, complex economic and technical developments led to wide changes in the size of cities, the proportion of the population in urban areas, and the growth rate of urbanization (johnson, 1998). more than half of the world population currently lives in urban areas and the uncontrolled expansion of cities is becoming a global concern. it i...
One-half of the world's population lives in cities and towns; this is expected to increase to 70% by 2050. One in three urban dwellers lives in slums. As the urban population grows, so does the number of urban poor. Out of a billion children living in urban areas, approximately 300 million are suffering from exclusion or are at risk of exclusion. Urban poor children are devoid of basic rights o...
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