نتایج جستجو برای: spatial analysis
تعداد نتایج: 3090385 فیلتر نتایج به سال:
Iran is one of the world's arid regions and exposed to dust particles in the air. This is important in spatial and temporal terms as well as the affects human health. In this paper a day when due to the amount of dust particles visibility reduces to 5,000 m is considered the dusty day. In the spatial and temporal analysis of dusty days 38 synoptic stations were studied. In order to conduct data...
In spatial statistic, the data analyzed which is correlated and this correlation is due to their locations in the studied region. Such correlation that is related to distance between observations is called spatial correlation. Usually in spatial data analysis, the prediction of the amount of uncertain quantity in arbitrary 4locations of the area is considered according to attained observations ...
Iran is one of the world's arid regions and exposed to dust particles in the air. This is important in spatial and temporal terms as well as the affects human health. In this paper a day when due to the amount of dust particles visibility reduces to 5,000 m is considered the dusty day. In the spatial and temporal analysis of dusty days 38 synoptic stations were studied. In order to conduct data...
Often in practice the data on the mortality of a living unit correlation is due to the location of the observations in the study. One of the most important issues in the analysis of survival data with spatial dependence, is estimation of the parameters and prediction of the unknown values in known sites based on observations vector. In this paper to analyze this type of survival, Cox...
The rapid growth of urbanization and its consequences has led to an increase in the detrimental effects of the environment, social and economic disadvantages in many cities, especially metropolises. Mashhad metropolis is one of those cities that is affected by the rapid growth process inequality in access to facilities and pressure on bio resources. The purpose of this paper is to investigate s...
The ultimate goal of spatial information, both as part of technology and as science, is to answer questions and issues related to space, place, and location. Therefore, geometry is widely used for description, storage, and analysis. Undoubtedly, one of the most essential features of spatial information is geometric features, and one of the most obvious types of analysis is the geometric type an...
The purpose of the present contribution is to review spatial analysis through a literature survey in order to better understand spatial agglomeration of activity. Research by Traditional Location Theory dedicated to this subject is examined, taking into account the reformulation by the “New Economic Geography”. They still have difficulties for developing models that integrate trading costs, lea...
Shuming Bao University of Michigan [email protected] IIntroduction Although spatial phenomena have been extensively studied in various research fields, such as economic geography (e.g., convergence in per capita income growth rates, inter-regional and intersectorial flows of labor and capital, and regional resource endowments), environmental sciences (e.g., dispersion of air-borne pollutants, soil...
in this work, we analyse a pair of two-dimensional coupled reaction-diusion equations known as the gray-scott model, in which spot patterns have been observed. we focus on stationary patterns, and begin by deriving the asymptotic scaling of the parameters and variables necessary for the analysis of these patterns. a complete bifurcation study of these solutions is presented. the main mathematic...
Introduction: This study aimed to assess a good protocol for the contamination indexes, concentration, spatial analysis, and source identification of toxic metals in top soils. Materials and Methods: In the first step, samples were taken from top soil (30 cm) and the metals were extracted and detected with ICP-AES. In the second step, Enrichment Factor, Geoaccumulation Index, and Contamination...
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