نتایج جستجو برای: kriging maps

تعداد نتایج: 110917  

ژورنال: علوم آب و خاک 2013
حمیدرضا کریم‌زاده, , رضا جعفری, , علی خنامانی, ,

Soil characteristics are the most powerful factors in desertification phenomenon. The purpose of this study was investigating soil characteristics as indices for evaluating desertification intensity. The most important indicators of the soil that affect desertification were selected in the present study. Soil samples were taken from Segzi desert vicinity located in the east of Isfahan city with...

Hadi Eslami, Hamid Reza Azimzadeh, Mahmoud Taghavi, Mohammad Taghi Ghaneian, Reza Ali Fallahzadeh, Seyed Ali Almodaresi,

 Background: The phenomenon of dust is a serious environmental problem in dry and semi dry regions. It has a destructive effect for the residents of such regions. Over two-thirds of Iran is in areas of dry and semi-dry climate conditions. Methods: In this research, dust fall measurements were taken in 41 stations across Yazd city using a marble dust collector (MDCO) located in diffe...

2015
Simona Hapca Philippe C. Baveye Clare Wilson Richard Murray Lark Wilfred Otten Andrew C Singer

There is currently a significant need to improve our understanding of the factors that control a number of critical soil processes by integrating physical, chemical and biological measurements on soils at microscopic scales to help produce 3D maps of the related properties. Because of technological limitations, most chemical and biological measurements can be carried out only on exposed soil su...

1999
J. W. van Groenigen

Ž . Using spatial simulated annealing SSA , spatial sampling schemes can be optimised for minimal kriging variance. Two optimisation criteria are presented in this paper. The first criterion minimises the average kriging variance, the second the maximum kriging variance. In a simple case with 23 observations, performances of a sampling scheme obtained with SSA were compared with performances of...

Journal: :Building of Informatics, Technology and Science (BITS) 2022

This research focuses on making classification maps using the Classification And Regression Trees (CART), Random Forest and Ordinary Kriging methods. The dataset used is data from Area Traffic Control System (ATCS) of Bandung City Transportation Agency Google Maps application in April 2022. After obtained, then pre-processing process will be carried out CART learning models made, after complete...

Journal: :Cartographica 2011
Urska Demsar Paul Harris

Kriging is a spatial prediction method, which can predict at any location and return a measure of prediction confidence (the kriging standard error). There exist many variations of kriging, some of which can be complex, especially those that allow many of its parameters to vary spatially. To calibrate such a kriging model and to be able to interpret its results can therefore be quite daunting. ...

ژورنال: علوم زراعی ایران 2020
Bagheri, Alireza, Mondani, Farzad, Nosratti, Iraj, Zargarian, Negin,

Weeds are one of the most important factors in reducing yield in legumes crops. Therefore, awareness of the interaction between weeds and crops as well as identification of their spatial variation pattern in the field is important. To investigate the the effect of  weeds on seed yield of lentil, and also to study the spatial distribution pattern of weeds under rainfed conditions, a field experi...

Journal: :J. Simulation 2014
Jack P. C. Kleijnen

This survey considers the optimization of simulated systems. The simulation may be either deterministic or random. The survey reflects the author’s extensive experience with simulationoptimization through Kriging (or Gaussian process) metamodels using a frequentist (non-Bayesian) approach. The analysis of Kriging metamodels may use bootstrapping. The survey discusses both parametric bootstrappi...

Journal: :جغرافیا و مخاطرات محیطی 0
بهزاد حصاری رضا رضایی رامین نیکانفر نادره طایفه نسکیلی

1. introduction early frost in the autumn and late spring frost are the most common disasters related to the huge agricultural damages in west azerbaijan province. among 39 natural disasters in the world, 7 dominant disasters occur in this region and the frost has the first rank regarding the damage to the public sector and insurance industry in recent years. based on several reports, early spr...

2002
Hyoung-Seog Chung Juan J. Alonso

The Kriging method is an interpolation scheme that can be used for modeling deter-ministic computer analyses as the realization of a stochastic process. The technique has been recognized as an alternative to the traditional Response Surface method in generating approximation models of computationally expensive CFD analyses. This is due to its ability to interpolate sample data and to model a fu...

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