نتایج جستجو برای: Geographic information systems
تعداد نتایج: 2154044 فیلتر نتایج به سال:
conclusions according to the average of wqi index, quality of water was good in station number one, medium in station number two, and bad in the rest of stations. according to the wilcox index, qualities of water in third station were medium and in the rest were good. results by using wqi, the best water quality was reported in station number one with the scalar quantity of 71.11 (water with be...
the paper discusses the use of modern information technologies, and in particular geographic information systems (gis), in the management and control of major accident risk. for this purpose, the regulatory framework of the recent “seveso ii” directive is briefly described. the referencing in space of the phenomena may be defined in terms of a geometrically exact or a relative location. the for...
conclusions geographic accessibility of pharmacies at night and on holidays has to be addressed by provincial health policymakers. materials and methods the analysis was based on straight-line distance measurements. we considered 150, 300, 450, 600, and 750 m for pedestrians, and 1, 2, and 3 km for driving accessibility as the acceptable distances. we calculated the number and percentage of hou...
this study was based on the hypothesis that “ecotourism is an important instrument in sustainable rural development and ecologically-based landscape planning approaches which take the objectives of socio-economic development and nature conservation have an effective role in this issue”. for this purpose, the necessity of ecologically-based landscape planning approaches in the planning and imple...
background: evaluation of intra-city roads in terms of environmental factors of motor vehicle injuries can help us to better identify these factors and the share of each of the factors in injuries. therefore, this study was conducted to determine the high injury areas and the risk factors of motor vehicle crashes resulting in injury and death in tehran, the capital city of iran, from november 2...
background over the past years, the malaria elimination program has considerably decreased the malaria indigenous cases and confined their incidence to the southeastern areas of iran encompassing 28 less developed counties with favorable transmission conditions. objectives the aim of the study was to investigate the effects of climatic and socioeconomic indicators on malaria transmission and to...
background: tuberculosis (tb) spread pattern is influenced by geographic and social factors. nowadays geographic information system (gis) is one of the most important epidemiological instrumentation identifying high-risk population groups and geographic areas of tb. the aim of this study was to determine the correlation between climate and geographic distribution of tb in khuzestan province usi...
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