نتایج جستجو برای: and nash sutcliffe criteria moreover

تعداد نتایج: 16850284  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده ادبیات و زبانهای خارجی 1392

abstract this study aimed at investigating the possible relationship between self-assessment in writing and self-regulation of iranian efl learners. the main purpose of the study was not only to report and inform about this relationship, but also to investigate and find practical outcomes of the incorporation of self-assessment in writing, such as improving writing skill. the research was carr...

Journal: :Entropy 2017
Zhenghong Zhou Juanli Ju Xiaoling Su Vijay P. Singh Gengxi Zhang

Monthly streamflow has elements of stochasticity, seasonality, and periodicity. Spectral analysis and time series analysis can, respectively, be employed to characterize the periodical pattern and the stochastic pattern. Both Burg entropy spectral analysis (BESA) and configurational entropy spectral analysis (CESA) combine spectral analysis and time series analysis. This study compared the pred...

2009
A. P. Jacquin A. Y. Shamseldin

This paper is concerned with the sensitivity analysis of the model parameters of the Takagi-Sugeno-Kang fuzzy rainfall-runoff models previously developed by the authors. These models are classified in two types of fuzzy models, where the first type is intended to account for the effect of changes in catchment wetness and the second type incorporates seasonality as a source of non-linearity. The...

ژورنال: :علوم آب و خاک 0
زهره عبدالهیان دهکردی z. abdollahian dehkordi dept. of watershed manage. shahrekord univ., shahrekord, iran.گروه آبخیزداری دانشگاه شهرکرد خدایار عبداللهی kh. abdollahi dept. of water resour. eng vrije univ., brussel.گروه مهندسی منابع آب، دانشگاه vub بروکسل سید جواد ساداتی نژاد s. j. sadatinejad dept. of watershed manage. shahrekord univ., shahrekord, iran.گروه آبخیزداری دانشگاه شهرکرد افشین هنربخش a. honarbakhsh dept. of watershed manage. shahrekord univ., shahrekord, iran.گروه آبخیزداری دانشگاه شهرکرد محمد نکویی مهر m. nekooeimehr res. center of agric. and natur. resour. chaharmahal and bakhtiyari, iran.مرکز تحقیقات کشاورزی و منابع طبیعی استان چهارمحال و بختیاری

بدون تحلیل دقیق داده های بارش-رواناب مشاهده ای، مدیریت جامع حوزه های آبخیز جهت پیش بینی وقوع سیلاب و کاهش خطرات ناشی از آن موجب هدر رفت سرمایه و عدم ایجاد توسعه پایدار خواهد شد. کاربردی ترین مدل جهت شبیه سازی فرآیند بارش-رواناب، مدل آبنمود واحد می باشد که با توجه به نقص کمی و کیفی آمار ایستگاه های هیدرومتری، ضرورت استفاده از روش های مصنوعی تهیه آن و به ویژه آبنمود واحد لحظه ای به دلیل حذف محدود...

ژورنال: علوم آب و خاک 2017
حسینی, مجید, طباطبایی, محمود رضا, غفوری, محمد, مکاریان, زینب,

In the last decades, climate change and fluctuation of water balance have been the main reason to apply hydrologic models for estimating quality and quantity of water components as efficient tools in water planning of critical conditions. In addition, these hydrologic models with potential to study the effects of watershed management practices on the runoff components are suitable tools for opt...

The major problem in the assessment of relationships between rainfall and runoff occurs when a study is carried out in ungauged watersheds in the absence of hydro-climatic data. This study aims to evaluate the applicability of Natural Resources Conservation Service-Curve Number (NRCS-CN) method together with GIS in estimating runoff depth in a mountainous watershed. The study was carried out in...

Journal: :caspian journal of environmental sciences 2012
m ebrahimian

the major problem in the assessment of relationships between rainfall and runoff occurs when a study is carried out in ungauged watersheds in the absence of hydro-climatic data. this study aims to evaluate the applicability of natural resources conservation service-curve number (nrcs-cn) method together with gis in estimating runoff depth in a mountainous watershed. the study was carried out in...

Journal: :Journal of environmental quality 2012
Shiying Tian Mohamed A Youssef R Wayne Skaggs Devendra M Amatya G M Chescheir

We present a hybrid and stand-level forest ecosystem model, DRAINMOD-FOREST, for simulating the hydrology, carbon (C) and nitrogen (N) dynamics, and tree growth for drained forest lands under common silvicultural practices. The model was developed by linking DRAINMOD, the hydrological model, and DRAINMOD-N II, the soil C and N dynamics model, to a forest growth model, which was adapted mainly f...

Journal: :مرتع و آبخیزداری 0
حامد روحانی استادیار دانشکدة کشاورزی و منابع طبیعی دانشگاه گنبد کاووس محسن فراهی مقدم کارشناس ارشد آبخیزداری دانشگاه زابل

in the past decades, much effort has been devoted to simulation of the rainfall-runoff process. hydrological models are simplified representations of the natural hydrologic system. in each case, the choice of the model to be applied depends mainly on the objective of the modeling but also on the available information. the relative performances of two lumped conceptual-based hydrology models (ta...

Journal: :Remote Sensing 2013
Nir Y. Krakauer Soni M. Pradhanang Tarendra Lakhankar Ajay K. Jha

Precipitation in mountain regions is often highly variable and poorly observed, limiting abilities to manage water resource challenges. Here, we evaluate remote sensing and ground station-based gridded precipitation products over Nepal against weather station precipitation observations on a monthly timescale. We find that the Tropical Rainfall Measuring Mission (TRMM) 3B-43 precipitation produc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید