نتایج جستجو برای: urban regulation
تعداد نتایج: 720419 فیلتر نتایج به سال:
Rapid urbanization has occurred in northwestern China, threatening the sustainability of its fragile dryland ecosystems. A lack of precise urban land-cover information has limited our understanding on the urbanization in the dryland. Here, we examined urban land-cover changes from 2000 to 2014 in 21 major cities that comprise over 50% of the developed land in arid China, using Landsat Enhanced ...
In the United States, water conservation-oriented rates (WCOR) are an increasingly vital tool for promoting water conservation and mitigating urban drought. Our models prove that one type of WCOR, drought demand rates (DDR), can produce with minimal regulation the quadruple objectives of conservation rates: (1) improving efficiency; (2) providing revenue neutrality; (3) assuring distributional ...
Urban forest was vital to adjusting Air Particulate Matter Concentration (APMC). The purpose of this study designed provide a more detailed analysis the urban long-time scales effect on APMC. paper assessed forests (urban greening) APMC in an environment, where green center (nearly 2 km2) and nearby (5 km away) bare-ground site (at road intersection) Yuhua District Changsha, China, were chosen ...
This study explored the relationship between trajectories of affective self-regulation skills during secondary school and young adult substance use in a large multi-ethnic, urban sample (N = 995). During secondary school, participants completed a measure of cognitive and behavioral skills used to control negative, unpleasant emotions or perceived stress. As young adults, participants reported o...
objective: to assess the prevalence and practice of fertility regulation methods among remote ethiopian communities of the hamer district, southern ethiopia. materials and methods: community-based cross sectional study was conducted in hamer district of south regional state of ethiopia. the study populations were women of reproductive age group residing in the district and purposively identifie...
Identifying the molecular basis of environmentally induced phenotypic variation presents exciting opportunities for furthering our understanding of how ecological processes and the environment can shape the phenotype. Urban and rural environments present free-living organisms with different challenges and opportunities, which have marked consequences for the phenotype, yet little is known about...
With the promotion of “Internet + efficient logistics” and refer Tomorrow’s Elastic Mobility Adaptive(TEAM), this paper extends the framework of urban logistics based on the Internet and cloud computing environment, specifies the challenges and transitions experienced by the commodity market, transport market, infrastructure market, then discusses several key technologies of IT application in u...
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