نتایج جستجو برای: simple kriging and inverse distance weighting methods

تعداد نتایج: 16980369  

Selecting an optimal interpolation method to estimate characteristics of an area of sampling points is not an important role in data management. One of the important indicators of quality of underground water is the electrical conductivity. Purpose of this study to select a suitability interpolation method from to evaluate and analyze the groundwater salinity SARKHON plain. To this appreciate w...

Journal: :جغرافیا و مخاطرات محیطی 0

1. introduction inflation of population and rising living standards in many countries need to be enhanced the high quality water suitable for different uses such as agricultural, industrial and drinking sections. groundwater is one of the most important water supply sources which are encountered with many problems such as drawdown, recharge reduction due to low rainfall and different natural an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده فنی و مهندسی 1387

abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...

Background and Objective: Studies have shown that the presence of standard amount of fluoride in drinking water can prevent tooth decay. Meanwhile, higher concentration than permitted amount in drinking water causes bone disease and dental fluorosis. Given the importance of fluoride in drinking water and also GIS ability in spatial analysis of various factors in the groundwater, in this study t...

Journal: :آب و توسعه پایدار 0
مهسا مالمیر معصومه دلبری

groundwater is the main water resource for domestic and agricultural uses in iran. so real-time mapping of groundwater depth can guide to have a proper exploitation of groundwater. this study was conducted to investigate the spatial variability of depth to groundwater in barkhar plain in esfahan using geostatistical methods. in this regard, the measurements of groundwater depth between july and...

Journal: :مدیریت آب و آبیاری 0
یاسر استواری دانشجوی کارشناسی ارشد، گروه علوم خاک، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد - ایران حبیب اله بیگی هرچگانی استادیار گروه علوم خاک، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد – ایران علی رضا داودیان استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد - ایران

mapping of groundwater nitrate can be useful in management of groundwater resources. the objectives of this study were to analyze the spatial variability of nitrate and to map its contamination in the lordegan aquifer and to evaluate the variations in nitrate variability and mapping during a year. then 32 wells were sampled four times during 2010. seasonal nitrate concentrations remained consta...

بصیری , مهدی, ترکش, مصطفی, ساکی, مرجان, وهابی, محمدرضا ,

The relationship between plant species and environmental factors has always been a central issue in plant ecology. With rising power of statistical techniques, geo-statistics and geographic information systems (GIS), the development of predictive habitat distribution models of organisms has rapidly increased in ecology. This study aimed to evaluate the ability of Logistic Regression Tree model ...

Journal: :desert 2014
zohreh kheradpisheh seyed ali almodaresi yasamin khaksar lida rafati

groundwater quality management is one of the most important issues in many arid and semi-arid regions, including iran.nitrate (no3-) is one of the most common anions contaminating groundwater. this study aimed to range nitrateconcentrations in water resources in bahabad plain in yazd province. to evaluate the nitrate data in this descriptive study,260 nitrate samples from 13 wells in bahabad we...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید