in the recent years, human activities have led to changes in land use and land cover, consequently, these changes lead to the structure and function of ecosystems. spatial-temporal change detection of land use is important to understand the relationships and interactions between human and natural resources and to make appropriate decisions due to changes in land use and land cover occurs in bro...

Zoning the pollution of a river may be the first or even the most important step in water quality management. In order to resolve its pollution, fuzzy clustering analysis may be used whenever a composite classification of water quality incorporates mutiple parameters&#10 &#10In such cases, the technique may be used as a complement or an alternative to comprehensive assessment. In fuzzy cluster...

Using elementary methods, the following results are obtalned:(1) If p is n n-m prime, 0 m n, 0 < b < ap n-m, and p ab, then (m) (-I)P-I(apb (rood pn). 2 A2_4B If r,s are the roots of x Ax-B, where (A,B) and D > 0, if n n u v rn+s n, and k > O, then (II) v =v (rood pn). n r-s n kpn kpn-1 (III) If p is odd and p D, then u (_D) u (rood pn); kp n P kp n-I (IV) u (_1)Bu n) n n-I (rood 2 k2 k2

The Zayandeh-Rud River Basin in the central plateau of Iran continues to grapple with water shortages due a water-intensive development path made possible by primarily supply-oriented management approach battle limits growth. Despite inter-basin transfers and increasing groundwater supply, recurring associated tensions among stakeholders underscore key weaknesses current paradigm. There was an ...

The purpose of this study was to manage the risks of Paveh Rood Dam at constructional phase by integrating TOPSIS & RAM-D techniques. After investigating the environmental conditions of the study area and the technical specifications of the dam, the risks of the dam construction were listed in a questionnaire. After analyzing the given scores by Preliminary Hazard Analysis (PHA), Technique for ...