Results 81 to 90 of about 4,118 (206)

Variabilidade espacial de atributos físicos de um argissolo vermelho-amarelo sob pastagem e vegetação secundária em regeneração natural Spatial variability of physical attributes of a red-yellow ultisol under pasture and secondary vegetation in natural regeneration

Engenharia Agrícola, 2009
Este trabalho foi realizado com o objetivo de estudar a variabilidade espacial de atributos físicos de um Argissolo Vermelho-Amarelo sob pastagem e vegetação secundária em regeneração natural.
Julião S. de S. Lima, Marcos A. Sattler, Renato R. Passos, Paulo C. Oliveira II, Gustavo S. de Souza   +4 more
doaj   +1 more source

Spatial variability of soil attributes and sugarcane yield in relation to topographic location Variabilidade espacial de atributos do solo e produtividade da cultura de cana-de-açúcar em relação a localização topográfica

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
Soils submitted to the same management system in places with little variation of landscape, manifest differentiated spatial variability of their attributes and crop yield.
Zigomar M. de Souza, Domingos G. P. Cerri, Paulo S. G. Magalhães, Diego S. Siqueira   +3 more
doaj   +1 more source

Article Title Hybrid Estimation of Semivariogram O F R E A D I N G O N L Y Hybrid Estimation of Semivariogram Parameters 1 1

, 2020
Two widely used methods of semivariogram estimation are weighted least squares estimation and maximum likelihood estimation. The former have certain computational advantages, whereas the latter are more statistically efficient.
Dale L Zimmerman, F O R P R O, Hao Zhang
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Interpolasi Spasial Metode Ordinary Kriging Menggunakan Semivariogram Anisotropik (Studi Pada Data Jumlah Kasus Demam Berdarah Dengue Wilayah Malang Raya) [PDF]

, 2018
Ordinary kriging merupakan metode interpolasi spasial untuk menduga nilai suatu peubah pada lokasi yang tidak tersampel. Metode ini menghasilkan nilai yang tidak bias dengan meminimumkan galat. Dalam metode ordinary kriging diperlukan semivariogram untuk
Amalia, Hilda
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Influência do Tipo de Amostragem na Estimativa de Volume de Madeira de Eucalipto por Krigagem

Floresta e Ambiente
RESUMO O objetivo da pesquisa foi verificar se a estimativa do volume individual de madeira por árvore realizada pela krigagem é influenciada pelo tipo de amostragem. Um povoamento com 1.875 árvores de eucalipto foi demarcado em um plano cartesiano (X, Y)
Wellington Jorge Cavalcanti Lundgren, José Antônio Aleixo da Silva, Rinaldo Luiz Caraciolo Ferreira   +2 more
doaj   +1 more source

Semivariogram model for Jordan precipitation [PDF]

, 2010
Bu çalışmada yağışın bölgesel bağımlılığını göstermek üzere yarıvaryogram analizi ele alındı ve bölgesel korelasyonlar yarıvaryogramlar kullanılarak açıklandı.
Qassem TARAWNEH, Zekai ŞEN
core   +1 more source

Mapping Approaches for Assessing Regional Soil Liquefaction Potential: A Comparative Assessment

Geosciences
Seismic liquefaction poses a significant threat to infrastructure and human safety, making accurate regional-scale hazard assessment essential for effective disaster mitigation. This study systematically compares simple kriging (SK), ordinary kriging (OK)
Yan Zhang, Su He, Miaojun Sun, Bohan Zhou, Mengfen Shen, Honglei Sun   +5 more
doaj   +1 more source

Geometric Anisotropic Semivariogram Modelling of Hotspot Confidence Levels in South Matan Hilir Subdistrict [PDF]

The purpose of this research is to apply geometric anisotropic semivariogram modelling to confidence level of hotspots in South Matan Hilir Subdistrict, Ketapang Regency.
Vantika, Sandy, Gumilang, Ari Ratna
core   +1 more source

Geospatial Approach to Soil Fertility Mapping in Dailekh District, Nepal: A GIS Perspective

AgroEnvironmental Sustainability
Spatial mapping of the soil gives the distribution patterns of the nutrients, which is crucial for integrated nutrient management, site-specific crop selection, water resource management, and adaptation to climate change for optimizing productivity ...
Gaurab Dhakal, Sanket Kattel
doaj   +1 more source

PEMILIHAN MODEL SEMIVARIOGRAM TERBAIK PADA DATA SPATIAL DENGAN APLIKASI METODE PROGRAM LINIER (Studi Kasus : Data Kejadian Gempa di Wilayah Pesisir Bengkulu) [PDF]

, 2015
Penelitian ini bertujuan untuk memilih model semivariogram teoritis terbaik berdasarkan semivariogram eksperimental isotropik Matheron (klasik) dan Cressie-Hawkins (robust) dengan menggunakan metode program linier pada sampel data kejadian gempa di ...
Faisal, Fachri
core   +1 more source