reliable estimates of river stream fl ow and fl ood zoning maps are needed for water resourcesmanagement such as fl ood mitigation, water supply, dam construction and irrigation. flood zoning needsaccurate data and is one of the non-structural fl ood management methods. this paper describes theapplication of hec-ras and gis model to determine fl oodplains maps for the part of sardabrud rivertha...

هدف پژوهش حاضر پیش‌بینی اعتیاد به اینترنت بر پایه‌ مهرورزی والدین و مهارت‌های اجتماعی با توجه نقش واسطه‌ای احساس تنهایی در دانش‌آموزان پایه نهم شهر یزد بود. جامعه‌ آماری شامل تمام سال تحصیلی 98-97 بود که از میان آن‌ها استفاده روش نمونه‌گیری خوشه‌ای صورت تصادفی تعداد 260 نفر انتخاب شدند. پرسش‌نامه‌های یانگ، بوری، ایندربیتزن دهشیری روی آزمودنی‌ها اجرا شد. سپس داده‌ها نرم افزار SPSS-16 Amos-21 آزم...

Analytical approximations to Einstein integrals are proposed. The approximations represented by two fast-converging series are valid for all values of their arguments. Accordingly, the algorithm can be easily incorporated into professional software like HEC-RAS or HEC-6 with minimum computational effort. DOI: 10.1061/(ASCE)0733-9429(2004)130:12(1198) CE Database subject headings: Bed load; Susp...

This paper develops a framework for regional scale flood modeling that integrates NEXRAD Level III rainfall, GIS, and a hydrological model (HEC-HMS/RAS). The San Antonio River Basin (about 4000 square miles, 10,000 km2) in Central Texas, USA, is the domain of the study because it is a region subject to frequent occurrences of severe flash flooding. A major flood in the summer of 2002 is chosen ...

Abstract The construction of river training structures has a local influence on hydraulic and sediment regimes. River is simply to modify the dimensions patterns channels, bars, pools. Many scientists have applied developed methods identify suitable techniques for training. In this paper 60 scientific papers were reviewed, through review, researchers divided according method using model problem...

rivers are important water resources for human life, but sometimes cause irreparable damages. the flood plains are fertile terrains which are endangered by flood. flood hazard mapping is one of the basic methods in flood fighting. in order to decline flood damages, the simulation of the hydraulic behavior of the rivers during flood occurrence is very important. in this study, areas that are flo...