نتایج جستجو برای: area poisson kriging

تعداد نتایج: 619815  

2013
Hua Sun Juan Li Xiaojun Mao

The spatial distribution characteristics of six heavy metals and metalloid in soil of Zhuji Lipu copper mining area, Zhejiang Province, was studied by using geostatistics approaches combined with GIS. These elements included Pb, As, Cr, Cu, Zn and Ni. The statistical analyses showed that concentrations of these elements were lognormal distribution. Concentrations of Pb, As, Cu, Zn and Ni were s...

2013
S. A. Archfield

In the United States, estimation of flood frequency quantiles at ungauged locations has been largely based on regional regression techniques that relate measurable catchment descriptors to flood quantiles. More recently, spatial interpolation techniques of point data have been shown to be effective for predicting streamflow statistics (i.e., flood flows and low-flow indices) in ungauged catchme...

Journal: :J. Comput. Physics 2015
Pierric Kersaudy Bruno Sudret Nadège Varsier Odile Picon Joe Wiart

In numerical dosimetry, the recent advances in high performance computing led to a strong reduction of the required computational time to assess the specific absorption rate (SAR) characterizing the human exposure to electromagnetic waves. However, this procedure remains time-consuming and a single simulation can request several hours. As a consequence, the influence of uncertain input paramete...

H. Kia-Daliri R. Akhavan V. Etemad

Estimation and mapping of forest resources are preconditions for management, planning and research. In this study, we applied kriging interpolation of geostatistics for estimation and mapping of forest stock at-tributes in a natural, uneven-aged, unmanaged forest in the Caspian region of northern Iran. The site of the study has an area of 516 ha and an elevation that ranges from 1100 to 1450 m ...

Journal: :Applied Spatial Analysis and Policy 2022

Abstract Boarding and alighting modeling at the bus stop level is an important tool for operational planning of public transport systems, in addition to contributing transit-oriented development. The interest variables, this case, present two particularities that strongly influence performance proposed estimates: they demonstrate spatial dependence are count data. Moreover, most cases, these da...

Journal: :International Journal of Geographical Information Science 2008
X. H. Liu Phaedon C. Kyriakidis Michael F. Goodchild

International Journal of Geographical Information Science Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713599799 Population-density estimation using regression and area-to-point residual kriging X. H. Liu a; P. C. Kyriakidis b; M. F. Goodchild b a Department of Geography & Human Environmental Studies, San F...

Journal: :Remote Sensing 2010
Beatriz Martinez Diaz Eduardo Cassiraga Fernando Camacho F. Javier García-Haro

This paper evaluates the performance of spatial methods to estimate leaf area index (LAI) fields from ground-based measurements at high-spatial resolution over a cropland landscape. Three geostatistical model variants of the kriging technique, the ordinary kriging (OK), the collocated cokriging (CKC) and kriging with an external drift (KED) are used. The study focused on the influence of the sp...

Journal: :CoRR 2017
Bas van Stein Hao Wang Wojtek Kowalczyk Michael T. M. Emmerich Thomas Bäck

Kriging or Gaussian Process Regression is applied in many fields as a non-linear regression model as well as a surrogate model in the field of evolutionary computation. However, the computational and space complexity of Kriging, that is cubic and quadratic in the number of data points respectively, becomes a major bottleneck with more and more data available nowadays. In this paper, we propose ...

Journal: :CoRR 2013
Firas Ajil Jassim

Image denoising is a critical issue in the field of digital image processing. This paper proposes a novel Salt & Pepper noise suppression by developing a Kriging Interpolation Filter (KIF) for image denoising. Gray-level images degraded with Salt & Pepper noise have been considered. A sequential search for noise detection was made using kk window size to determine nonnoisy pixels only. The non...

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