Results 51 to 60 of about 6,324 (226)
Parametric variogram estimation
, 2016 In spatial statistics, the correct identification of a variogram model when fitted to an empirical variogram depends on many factors. Here, simulation experiments show fitting based on the variogram cloud is preferable to that based on Matheron's and ...
Jin, Renhao, Kelly, Gabrielle E.
core +1 more source
Pesquisa Agropecuária Brasileira, 2010 El objetivo de este trabajo fue evaluar la variabilidad espacial de la producción de banano en función de variables físicas y químicas del suelo y de las características fisiográficas de la finca, con miras a seleccionar aquellas con mayor potencial de ...
Darío Antonio Castañeda Sánchez +2 more
doaj +1 more source
Wildlife Biology, EarlyView.Predation by pine martens Martes martes and red foxes Vulpes vulpes is an important factor influencing the population dynamics of capercaillie Tetrao urogallus. However, there is a knowledge gap regarding the relative effects of these mesopredators on the reproductive success of capercaillie. To better understand how various landscape factors influence
Siow Yan Jennifer Angoh +4 more
wiley +1 more source
, 2010 Geostatistical analysis of soil properties is undertaken to allow prediction of values of these properties over regions or at unsampled locations. A key step in geostatistical analysis is the estimation of a variogram function that describes the spatial ...
R. M. Lark, Lark, R. M.
core +1 more source
Energies, 2017 Heterogeneity of permeability is an important factor affecting the production of a carbonate reservoir. How to correctly characterize the heterogeneity of permeability has become a key issue for carbonate reservoir development.
Chenji Wei +5 more
doaj +1 more source
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
The Survey of Regional Changes in Annual Precipitation Using Geostatistic techniques (Case Study: Ilam Province) [PDF]
نشریه جغرافیا و برنامهریزی, 2015 Selection of an optimal interpolation method for estimating the characteristics of the not-sampled points was the main aim of this study, due to the important role of data management. In this study, ordinary Kiriging interpolation models including linear,
Haji Karimi, Hasan Fathizade
doaj
Oil & Gas Science and Technology, 2020 For 3D geological modelling of oil and gas reservoirs, well pattern density is directly related to the number of samples involved in the calculation, which determines the variation function of stochastic modelling and has great impacts on the results of ...
Wang Jinkai +4 more
doaj +1 more source
Statistical Analysis of PM10 Concentration in the Monterrey Metropolitan Area, Mexico (2010–2018)
Atmosphere, 2022 Air-quality monitoring and analysis are initial parts of a comprehensive strategy to prevent air pollution in cities. In such a context, statistical tools play an important role in determining the time-series trends, locating areas with high pollutant ...
Mario A. Aguirre-López +7 more
doaj +1 more source
On Spatial Point Processes With Composition‐Valued Marks
International Statistical Review, EarlyView.Summary Methods for marked spatial point processes with scalar marks have seen extensive development in recent years. While the impressive progress in data collection and storage capacities has yielded an immense increase in spatial point process data with highly challenging non‐scalar marks, methods for their analysis are not equally well developed ...
Matthias Eckardt +2 more
wiley +1 more source