نتایج جستجو برای: the coupled model usually underestimates runoff

تعداد نتایج: 16392810  

Journal: :تحقیقات آب و خاک ایران 0
پریسا سادات آشفته دانشجوی دکتری مهندسی منابع آب، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران امید بزرگ حداد دانشیار گروه مهندسی آبیاری و آبادانی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

in this study, long-term trends and abrupt changes of hydro-climatic variables was investigated in the observed period 1971-2000 for aidoghmoush basin using mann-kendall nonparametric test and cumulative curve of climatic variables-runoff, respectively. results show decrease trends for rainfall and runoff and increase trend for temperature by the mann-kendall test with a confidence level of 99%...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده برق و کامپیوتر 1392

abstract nowadaysphotovoltaic solar cells (pvs) areacknowledged the fastest growing energy technology in the word, however, they only account for only fraction of current global renewable energy capacity. it isrecognized that this incomplete market penetration has been largely a result of the technology’sexcessive cost. so researchers are trying to find innovative, economic way with theaim of ...

پایان نامه :0 1394

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1389

abstract the current study sets out 1) to investigate the strategic needs of iranian efl learners in reading literary and non-literary texts; 2) to shed some light on the differences between reading literary and non-literary texts; and 3) to specify the differences in the interaction of participants with texts while reading two literary subgenres ( i.e., short story and literary essays). to ...

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

the application of a comprehensive model of communicative language ability (cla) to language teaching and testing has always been an imperative in l2 education since hymess proposal of communicative competence in the 1970s. recent l2 research has clearly underscored the importance of sufficient pragmatics representation as an essential component of cla in pedagogical and testing practices in l2...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان 1389

implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1392

this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...

Journal: :اکو هیدرولوژی 0
مجید محمدی استادیار گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه سمنان، سمنان، ایران حسین زینی وند استادیار گروه مهندسی مرتع و آبخیزداری، دانشکدۀ کشاورزی، دانشگاه لرستان حمیدرضا مرادی دانشیار گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، مازندران، نور حمیدرضا پورقاسمی استادیار گروه مهندسی منابع طبیعی و محیط زیست، دانشکدۀ کشاورزی، دانشگاه شیراز، شیراز، ایران حسن فرازجو مدیر دفتر مطالعات پایۀ شرکت آب منطقه‏ای گلستان

the main objective of this research was assessing the effects of land use on runoff parameters such as total runoff, surface runoff and peak discharges at the baghsalian watershed as a case study site. at first, land use maps of 1986 and 2012 were prepared using a synthetic method and landsat images. wetspa model was applied to simulate daily runoff for 8 years (the first 5 years as calibration...

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