نتایج جستجو برای: daily flows

تعداد نتایج: 276021  

Journal: :مرتع و آبخیزداری 0
خالد اوسطی استادیار دانشکدة منابع طبیعی دانشگاه کردستان علی سلاجقه استاد دانشکدة منابع طبیعی دانشگاه تهران محمد مهدوی استاد دانشکدة منابع طبیعی دانشگاه تهران پاول کوئنیگر استادیار مؤسسة علوم زمین و منابع طبیعی (bgr) ژئوسنتروم هانوفر، آلمان کامران چپی استادیار دانشکدة منابع طبیعی دانشگاه کردستان آرش ملکیان دانشیار دانشکدة منابع طبیعی دانشگاه تهران

within the climate change debate and its probable impacts on water resources systems, design and operation of management plans based on the assumption of stationary hydrology may cause serious challenge to accurately predict future supplies. therefore this case study is trying to assess trend in hydroclimatic variables of karkheh rivers upstream by applying modified mann-kendall trend test on l...

2010
John Mela Blaine Nelson Saurabh Amin Suzanna Schmeelk Shankar Sastry

Security of networked computing systems has become increasingly paramount. The daily function of society hinges on the safe and reliable operation of these infrastructures. The detection of attack traffic on network infrastructures necessitates experimentation on accurately modeled emulations. In this research, a model of the Abilene topology was created using the DETERlab testbed. Network traf...

Atmospheric circulation is important to determine the surface climate and environment, and affect regional climate and surface features. In this study, to quantify its effect, the classification system, developed by Lamb is applied to obtain circulation information for Ardabil, North West Province in Iran, on a daily basis, and is a method to classify synoptic weather for study area. For that p...

Journal: :The Journal of the Royal College of General Practitioners 1986
T P Usherwood J H Barber

Twice daily peak expiratory flow measurements were obtained at home from 65 asthmatic children and 34 non-asthmatic controls, and a measure of the daily variation in peak expiratory flow was calculated for each child (mean daily variation). Children aged less than 7.5 years appeared unable to provide reproducable peak expiratory flows, but above that age the mean of the mean daily variations wa...

Journal: :Environmental Modelling and Software 2001
V. G. Mitchell R. G. Mein T. A. McMahon

Current urban water management practices aim to remove stormwater and wastewater efficiently from urban areas. An alternative approach is to consider stormwater and wastewater as a potential resource substitute for a portion of the water imported via the reticulated supply system. A holistic view of urban water resources provides the framework for the evaluation of the demand for water supply, ...

Journal: :Appl. Soft Comput. 2007
Pankaj Singh M. C. Deo

Alternative forms of neural networks have been applied to forecast daily river flows on a continuous basis with the purpose of understanding how recent architectures like ANFIS, GRNN and RBF compare with traditional FFBP when monsoon-fed rivers involving significant statistical bias are involved. The forecasts are made at a location called Rajghat along river Narmada in India. Division of yearl...

2008
FENGGE SU YANG HONG DENNIS P. LETTENMAIER

Satellite-based precipitation estimates with high spatial and temporal resolution and large areal coverage provide a potential alternative source of forcing data for hydrological models in regions where conventional in situ precipitation measurements are not readily available. The La Plata basin in South America provides a good example of a case where the use of satellite-derived precipitation ...

2002
Xiuying Wang Rabi H. Mohtar

This study was conducted to evaluate the performance of DRAINMOD /DRAINMOD-N on an experimental drainage field at Southeast Purdue Agricultural Center (SEPAC), based on the comparison between observed and predicted subsurface drain flows and nitrate-nitrogen losses via drainage. The site was under conventional drainage management, consisting of two replications of three tile drain spacings—5m, ...

2013
Kyoung-Su Im Seong-Kyun Cheong Christopher F. Powell Ming-chia D. Lai Jin Wang

Cavitation is an intricate multiphase phenomenon that interplays with turbulence in fluid flows. It exhibits clear duality in characteristics, being both destructive and beneficial in our daily lives and industrial processes. Despite the multitude of occurrences of this phenomenon, highly dynamic and multiphase cavitating flows have not been fundamentally well understood in guiding the effort t...

2002
I. G. Littlewood

An established rainfall-streamflow modelling methodology employing a six-parameter unit hydrograph-based rainfall-runoff model structure is developed further to give an improved model-fit to daily flows for the River Teifi at Glan Teifi. It is shown that a previous model of this type for the Teifi, which (a) accounted for 85% of the variance in observed streamflow, (b) incorporated a pure time ...

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