نتایج جستجو برای: infiltration shape parameter

تعداد نتایج: 449003  

Journal: :آب و خاک 0
لاله پرویز مجید خلقی پرویز ایران نژاد شهاب عراقی نژاد خلیل ولیزاده

abstract land surface hydrological models has importance in the determination of soil moisture and temperature, the rate of evapotranspiration, stream flow by emphasis on the land surface physical and dynamic process descriptions. in this research, vic land surface hydrological model has been used for the land surface temperature and stream flow determination. the vic runoff simulation in each ...

Estimating the runoff in the basins lacking statistics is always considered by researchers And managers in planning, development and implementation of many projects of water Resource. One of the methods for estimating the runoff is to use geomorphology instantaneous unit hydrograph which estimates the hydrograph of flood based on quantitative geomorphology factors. In this study, first the quan...

Journal: :تحقیقات آب و خاک ایران 0
پریسا مشایخی دانشجوی دکتری/دانشگاه شهرکرد شجاع قربانی دشتکی هیئت علمی محمدرضا مصدقی هیات علمی/دانشگاه صنعتی اصفهان حسین شیرانی هیات علمی/دانشگاه حضرت ولی عصر رفسنجان مهدی پناهی هیات علمی/موسسه تحقیقات خاک و آب کرج محمدرضا نوری هیات علمی/دانشگاه شهرکرد

in this study, hydrus2d/3d software was used to estimate the hydraulic parameters of van genuchten-mualem model via inverse modeling using double-ring infiltrometers data in 3 different soil textures. nine scenarios of inverse modeling (divided in three groups) were considered with different number (5, 4 and 3) of fitted hydraulic parameters for optimization. in the first group, simulation was ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

Infiltration is the process of water penetration from the ground surface into the soil and is an important process in the hydrological cycle by which surface runoff and groundwater recharge can be linked. Over the years, the importance of the infiltration process resulted in the development of several simplified analytical models for predicting infiltration. These infiltration models range from...

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Infiltration is the process of water penetration from the ground surface into the soil and is an important process in the hydrological cycle by which surface runoff and groundwater recharge can be linked. Over the years, the importance of the infiltration process resulted in the development of several simplified analytical models for predicting infiltration. These infiltration models range from...

Journal: :Computers & Mathematics with Applications 1997

Several radial basis function based methods contain a free shape parameter which has  a crucial role in the accuracy of the methods. Performance evaluation of this parameter in different  functions with various data has always been a topic of study. In the present paper, we consider studying the methods which determine an optimal value for the shape parameter in interpolations of radial basis  ...

Journal: :کشاورزی (منتشر نمی شود) 0
غلام عباس بارانی دانشیار، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان محمد جواد خانجانی دانشیار، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان محسن اسکافی دانشجوی مقطع کارشناسی ارشد، رشته تاسیسات آبیاری، دانشگاه شهید باهنر کرمان، کرمان

soil conservation service (scs) adjusted the kostiakovs infiltration model by adding a constant coefficient, for improvement of estimation. the improved model has three constant parameters, which are difficult to calculate. so scs has taken the third constant parameter as equal to 0.65-0.7 cm to simplify the estimation. this parameter varies in different soil and often outranges the scs estimat...

Journal: :Diagnostic and interventional imaging 2014
B Boyer E Russ

Architectural distortions consist of convergence areas and local retractions at the border of the gland. The authors examine the semiologic features of the distortions and their different causes, together with their pathological anatomy correlations. The predominant benign causes are the proliferative Aschoff body and the main malignant cause is infiltrating lobular carcinoma.

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