نتایج جستجو برای: we use geostatistical estimation methods krigging or co

تعداد نتایج: 7840090  

Journal: :Springer proceedings in earth and environmental sciences 2023

Abstract Point bar reservoir geology is frequently encountered in oil and gas developments worldwide. Furthermore, point many sites being considered for large scale CO 2 injection sequestration. A comprehensive modeling method that adequately preserves internal architecture its associated heterogeneities still not available. Traditional geostatistical methods cannot capture the curvilinear of b...

2002
Mario Chica-Olmo Juan A Luque-Espinar

In environmental sciences it is relatively common to encounter certain problems that require specific experimental data treatment by means of spatial estimation methods, for example mapping the spatial distribution of a contaminant concentration exceeding a limit level, an ‘alarm problem’. In such situations the real problem is not directly related to the estimation of the variable at any parti...

In this paper we propose and construct Fuzzy Algebraic Additive Model, for the estimation of risk in various fields of human activities or nature’s behavior. Though the proposed model is useful in a wide range of scientific fields, it was designed for to torrential risk evaluation in the area of river Evros. Clearly the model’s performance improves when the number of parameters and the actual d...

2007
Kwangwon Park

Current geostatistical simulation methods allow generating multiple realizations that honor all available data, such as hard and secondary data under certain geological scenarios (e.g. 3D training image-based models, multi-Gaussian law, Boolean models). However, it is difficult to simulate large models that honor highly nonlinear response functions (e.g. remote sensing data, geophysical data or...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...

2008
Ben Ingram Dan Cornford Lehel Csató

1 Abstract Automatically generating maps of a measured variable of interest can be problematic. In this work we focus on the monitoring network context where observations are collected and reported by a network of sensors, and are then transformed into interpolated maps for use in decision making. Using traditional geostatistical methods, estimating the covariance structure of data collected in...

Journal: :محیط زیست طبیعی 0
امیرحسین حمیدیان استادیار گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران مجید آتشگاهی کارشناس ارشد محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران محمدرضا حاجی‏هاشمی‏جزی کارشناس ارشد بیابان زدایی، دانشکدۀ منابع طبیعی، دانشگاه تهران ابوالحسن فتح آبادی دانشجوی دکتری آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه تهران، ایران

groundwater resources are the most important sources of water consumption (agriculture, industry and drinking water) in arid and semi-arid regions. the management of these water resources is more expensive and difficult than surface waters; therefore more complicated and economic methods are needed for determination of their quality and quantity. in this study geostatistical methods of kringing...

Journal: :محیط زیست طبیعی 0
مهدی شیخ گودرزی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران سیدحسن موسوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران نعمت الله خراسانی استاد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران

changes in groundwater quality, is caused destruction of other resources, either directly or indirectly, due to bad management of groundwater extractions. considering the importance of groundwater resources, especially in arid and semiarid regions, this research was done to modeling the spatial distribution of some groundwater qualitative factors with emphasis on drinking using geostatistical m...

2000
Umberto Moscato Teresa Esposito Giancarlo Vanini

In this study we evaluated the diffusion of nitrous oxide in a few operating rooms, using spatial data modelling techniques, in order to assess hospital staff exposure and to promote risk management. Indoor air sampling was carried out, during routine operating activity, by means of transportable infrared spectrometer, with geostatistical techniques. We detected high average concentrations of n...

پایان نامه :دانشگاه رازی - کرمانشاه - دانشکده ادبیات و علوم انسانی 1393

in recent years, there has been a growing interest among researchers to investigate the relationship betweenteacher self-efficacy and classroom behavior management, especially students misbehavior. therefore, this study aimed to comparatively investigate english and arabic teachers’ use of different behavior managementstrategies, their self-efficacy, and their success in an iranian context. th...

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