نتایج جستجو برای: sequential gaussian simulation sgsim
تعداد نتایج: 703419 فیلتر نتایج به سال:
we extend the method of adaptive two-stage sequential sampling toinclude designs where there is more than one criteria is used indeciding on the allocation of additional sampling effort. thesecriteria, or conditions, can be a measure of the targetpopulation, or a measure of some related population. we developmurthy estimator for the design that is unbiased estimators fort...
We present a comparative study of soil CO2 flux (FCO2) measured by five groups (Groups 1-5) at the IAVCEI-CCVG Eighth Workshop on Volcanic Gases on Masaya volcano, Nicaragua. Groups 1-5 measured FCO2 using the accumulation chamber method at 5-m spacing within a 900 m grid during a morning (AM) period. These measurements were repeated by Groups 1-3 during an afternoon (PM) period. All measured F...
A sequential decision problem, based on the task of identifying the species of trees given acoustic echo data collected from them, is considered with well-known stochastic classifiers, including single and mixture Gaussian models. Echoes are processed with a preprocessing stage based on a model of mammalian cochlear filtering, using a new discrete low-pass filter characteristic. Stopping time p...
Background: The area of contaminated lands exposed to the health risk of environmental pollutants is a matter of argument. In this study, a new method was developed to estimate the amount of area that is exposed to higher than normal levels of Cr, Mn, and V. Methods: Overall, 170 soil samples were collected from the upper 10 cm of soil in an arid area in central part of Iran in Semnan Provin...
برای شبیهسازی پارامترهای پتروفیزیکی مانند تخلخل و اشباع آب در مخازن هیدروکربنی، از دادههای چاههای حفاری شده (لاگها) استفاده میشود. با شبیهسازی پارامترهای پتروفیزیکی، یک دید سهبعدی از خصوصیات مخزنی بهدست میآید که در ایجاد الگوهای جریانی مخزن نقش بسزایی دارد. همچنین با شبیهسازی این پارامترها، مکانهای مستعد مخزنی شناسایی شده و در توسعه میادین هیدروکربنی مورد استفاده قرار میگیرد. در مطا...
There is a strong need for sound statistical analysis of simulation and optimization algorithms. Based on this analysis, improved parameter settings can be determined. This will be referred to as tuning. Model-based investigations are common approaches in simulation and optimization. The sequential parameter optimization toolbox SPOT package for R [5] is a toolbox for tuning and understanding s...
The aim of seismic inversion is mapping all of the subsurface structures from seismic data. Due to the band-limited nature of the seismic data, it is difficult to find a unique solution for seismic inversion. Deterministic methods of seismic inversion are based on try and error techniques and provide a smooth map of elastic properties, while stochastic methods produce high-resolution maps of el...
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