نتایج جستجو برای: geostatistic

تعداد نتایج: 63  

ژورنال: علوم آب و خاک 2006
محمدحسن راشد محصل, , مهدی نصیری ‌محلاتی, , آسیه سیاه‌مرگویی, , حمـید رحیمیان‌ مشهدی, , محمد بنایان‌اول, ,

This study was conducted in a sugar beet field at Collage of Agriculture Experimental Station, Ferdowsi University of Mashhad, Iran. In order to describe the pattern of spatial variations and density of Chenopodium album, Solanum nigrum, Amaranthus sp., Portulaca oleracea, Echinochla crus-galli, and Convulvulus arvense as the main prevalent annual and perennial weeds of sugar beet fields, geost...

2008
Jiangping Chen Xiaojin Tan

In 1962, G. Matheron introduced the term geostatistics to describe a scientific approach to evaluate problems in geology and mining, from ore reserve estimation to grade control. Geostatistics provides statistical methods used to describe spatial relationships among sample data and to apply this analysis to the prediction of spatial and temporal phenomena. They are used to explain spatial patte...

ژورنال: علوم آب و خاک 2019

The aim of this study was to evaluate the spatial distribution of soil infiltration using geostatistics methods in a regional scale on 400 hectares of Mansour Abad Plain, in Larestan region, Fars Province. Sampling and parameters measurement were done for 78 points in a regular grid with a distance of 100*100 meters; for these variables, the best variogram model between linear, exponential, Gau...

2006
A. M. Michalak

Bioremediation has been argued to be one of the most cost-effective remediation technologies available to reduce soil, sediment, or groundwater contamination, particularly because this approach may allow for the implementation of in-place strategies. Recent trends have advocated the application of innovative sediment stabilization strategies through placement of (reactive) capping material to a...

Journal: :The American journal of tropical medicine and hygiene 2002
A Srividya E Michael M Palaniyandi S P Pani P K Das

Gaining a better understanding of the spatial population structure of infectious agents is increasingly recognized as being key to their more effective mapping and to improving knowledge of their overall population dynamics and control. Here, we investigate the spatial structure of bancroftian filariasis distribution using geostatistical methods in an endemic region in Southern India. Analysis ...

محمدحسن راشد محصل, , مهدی نصیری ‌محلاتی, , آسیه سیاه‌مرگویی, , حمـید رحیمیان‌ مشهدی, , محمد بنایان‌اول, ,

This study was conducted in a sugar beet field at Collage of Agriculture Experimental Station, Ferdowsi University of Mashhad, Iran. In order to describe the pattern of spatial variations and density of Chenopodium album, Solanum nigrum, Amaranthus sp., Portulaca oleracea, Echinochla crus-galli, and Convulvulus arvense as the main prevalent annual and perennial weeds of sugar beet fields, geost...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یاسوج - دانشکده کشاورزی 1391

اینکه بتوانیم تشخیص دهیم چه عرصه هایی از منطقه ی جنگلی از شرایط بهتری برای تجدیدحیات طبیعی برخوردار می باشند و کدام عرصه ها از تجدیدحیات ضعیف تری برخوردار می باشند، می توان اقدامات مناسبی را در زمینه ی مدیریت جنگل کاری عرصه ها انجام داد و جنگل کاری را در عرصه-هایی که در شرایط بحرانی از نظر زادآوری جنگل می باشند متمرکز نمود. در این پژوهش به منظور تعیین مناسب ترین روش برای برآورد و نقشه سازی احتم...

2008
A. Iwasaki A. Todoroki S. Izumi S. Sakai

The present paper proposes a new diagnostic tool for the structural health monitoring that employs a Kriging Interpolation. Structural health monitoring is a noticeable technology for aged civil structures. Most of the structural health monitoring systems adopts parametric method based on modeling or non-parametric method such as artificial neural networks or response surfaces. The conventional...

Journal: :پژوهش های تولید گیاهی 0
اسماعیل محمدی احمد محمودی دانشجو بهنام کامکار هیات علمی امید عبدی کارشناس ارشد

background and objectives: in sciences like ecology, that measured value of a quantity to be processed within a definite border, the estimation of variable values in a particular time and place, using existing data from the use of information variable or variables another is common. in geoeographic studies, data collection is often the point. usually, it is essential that this data be generaliz...

2013
Giuseppe Formetta Olaf David Riccardo Rigon

The paper presents two applications of the JGrass-NewAge model in order to investigate the influence of an explicit channel routing model on the discharge simulation. The semidistributed, component based hydrological model JGrass-NewAge is based on the Object Modeling System version 3.0 (OMS3). OMS3, which facilitates exchange of model components, was used to set up two different model configur...

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