نتایج جستجو برای: topographic factors
تعداد نتایج: 1090566 فیلتر نتایج به سال:
A system for object-based classification of landscape types incorporating topographic data was designed and tested in a Japanese countryside target area. IKONOS data (Japan Space Imaging multi-spectral resolution 4 meter, panchromatic resolution 1 meter) acquired on 23 April 2001 was utilized, and the classification used Definiens Ver.5 software (Definiens). Initial segmentation was a muli-reso...
Increasing the concentration of atmospheric carbon dioxide is the main factor for the climatic change having some harmful consequences for the human health while there is no considerable effort for decreasing this accelerated global problem, yet. Kermanshah province located in the west of Iran has about 1,200,000 ha rangeland which is dominated by Astragalus sppas the more frequent shrub beinga...
As an important means of improving positioning accuracy, block adjustment has been used in the improvement and assessment accuracy for Chinese Gaofen-7 (GF-7) satellite. However, there is little research on what factors affect without ground control points (GCPs). The correlation between images participating not clear. This paper proposes coefficients canonical analysis five indicators three se...
Preparation of landslide susceptibility maps is important for engineering geologists and geomorphologists. However, due to complex nature of landslides, producing a reliable susceptibility map is not easy. In this paper, the weights-of-evidence model (a Bayesian probability model) was applied to the task of evaluating landslide susceptibility using GIS. Using landslide location and a spatial da...
The engineering of tissue is preferably done with stem cells, which can be differentiated into the tissue of interest using biochemical or physical cues. While much effort has been focused on using biological factors to regulate stem cell differentiation, recently interest in the contribution of physical factors has increased. In this work, three-dimensional (3-D) microchannels with topographic...
Background and objectives: In order to properly manage rangeland ecosystems, it is necessary to study the relationship between ecological factors in nature such as elevation, climate and soil factors with vegetation and living organisms. In this regard, the present study was conducted to investigate the relationship between species diversity and environmental factors (Physical and chemical char...
The Ghezel Ozan basin in an area of 50000 KM2 is in the northwest of Iran. Recognition of variables like captivity and deviation of rivers, erosion and compact surfaces, the affects of old lakes by the reflected affects on 1:50000 scaled topographic maps of the region, are some of the points which is tried to find out the changes of Quaternary of the basin. Although Ghezel Ozan basin is ended t...
Avalanches represent a very short, local, dynamic event in snow-covered mountainous regions. They are not easy to predict and often can produce devastating results. Avalanche cartography deals with the causes and consequences of such incidents and attempts to depict them in a variety of ways. The most common cartographic representation within this field is the avalanche hazard map. It incorpora...
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