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Based on the research current situation and transformation path of spatial construction villages towns in northern Jiangsu, “compactness” “convenience” are extracted as elements evaluation. With multi-source data, comprehensively using ENVI remote sensing image interpretation, GIS analysis, Fragstats landscape index calculation, entropy weight–TOPSIS comprehensive evaluation, SPSS cluster a “di...

the coastal region of chabahar gulf with 1113.7km2 area has been located in the southeast of iran. in this research, satellite images of etm+ (2004) were used in order to zoning of sedimentary environments in this gulf. methodology of this research was baesd on synthesis of supervised and unsupervised classifications in gis and envi softwares. based on studies and calculation of oif index, the ...

Previous studies have shown that the presence of nitrate in drinking water can cause several diseases especially in the infants, such as cancer and blue baby. The Environmental Protection Agency (EPA) has since adopted the 50 mg/l standard as the maximum contaminant level (MCL) for nitrate for regulated public water systems. This study aimed to evaluate the concentration of nitrate in the drink...

The International Commission on Radiological Protection has existed for 75 yearsand throughout that time has produced recommendations for the protection of peopleagainst the dangers of ionizing radiation. It recognized some 25 years ago that the envi-ronment should also be protected, but the policy was to assume that the protection ofpeople was sufficient to protect other specie...

With the development of machine learning and GIS (geographic information systems) technology, it is possible to combine them mine knowledge rules behind massive spatial data. GIS, also known as geographic systems, a comprehensive discipline, which combines geography cartography has been widely used in different fields. It computer system for inputting, storing, querying, analyzing, displaying T...

We consider a random walk with transition probabilities weakly dependent on an environment with a deterministic, but strongly chaotic, evolution. We prove that for almost all initial conditions of the environment the walk satisfies the CLT.