نتایج جستجو برای: spatial factors
تعداد نتایج: 1410056 فیلتر نتایج به سال:
all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...
This study aimed to investigate the spatial patterns of Acanthophyllum microcephalum Boiss, Nepeta glomerulosa Boiss and Hertia angustifolia and evaluate the effects of study scale on spatial patterns of three range plant species in Ghale-Gharak research-station located in Shahr-e-Kord. 40 points with a distance of five meters from each other were selected for sampling of vegetation along four ...
Urban planning has gone from the past to the present day to a greater extent based on physical factors, to the extent that the basis of urban planning plans and urban plans influenced urban development and physical spaces. It's The city is the product of complex economic and social relations and its spatial heterogeneity reflects the processes of widespread socio-economic-cultural-social ...
the purpose of this study is to investigate the factors affecting the manufacturing industry wage among selected developing countries based on new economic geography theory. more specifically, we use a panel data model to study the spatial structure of wages in 136 countries for the period 1998-2007. the results indicate that this theory provides a good description of the spatial structure of w...
Spatial autocorrelation statistics provide summary information about the spatial arrangement of data in a map. In fact, these statistics compare neighboring area values in order to assess the level of large scale clustering. Whenever a large number of neighboring areas have either relatively large or relatively small values, large scale clustering may be detected. Detecting such clustering is a...
extended abstract 1. introduction spatial expression of increase in earth planet population as the consequence of industrialization, improving the living standards, and reducing the amount of epidemic diseases in the past century, has been the physical-spatial development of urban and rural settlements. this transformation, especially during past decade, beside the technological advances, has s...
bacteria play a major role in environmental processes. however, the spatial and seasonal variations and environmental impact factors on different bacterial groups have been poorly studied. in the present study, we compared the spatial and seasonal variations of two bacterial groups (acidobacteria, actinobacteria) from early snow melt and late snow melt locations in alpine tundra. the results re...
one of the most important factors in study of project’s , is the study of environmental opportunities factors the permanent study of environmental opportunity factors . the study of permanent environmental changing and knowing golden threats’ cooperate with possible threats and at the result in structure forming and future skeleton of organization has a vital effects . the petrochemical industr...
Background: Breast cancer is one of the most common diseases in women and causes more deaths rather than other cancers. The increasing trend of breast cancer in Iran makes clear the need of extensive breast cancer research in this area. Some studies showed that in the variety countries and even in the different areas in one country has different risk of breast cancer incidence and this is a rea...
spatial and temporal distribution of qualitative factors of groundwaters is important to preserve their quality. so, one of the advanced techniques for distribution of groundwater’s qualitative is geostatistic methods. in this study, 33 active wells were randomly sampled to determine the spatial distribution of nitrate pollution in groundwater of the siakh darengoun region (west of shiraz in fa...
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