Results 41 to 50 of about 19,252 (217)

A geostatistical approach for predicting the top producing formation in oil fields

open access: yesGeodesy and Cartography, 2012
Drilling engineer's understanding of the subsurface conditions of oil-rich regions in Iran is based on experience and through quantitative assessment of these valuable data.
Mohammad Abdideh, Majed Abyat
doaj   +1 more source

Variogram investigation of covariance shape within longitudinal data with possible use of a krigeage technique as an interpolation tool: Sheep growth data as an example [PDF]

open access: yes, 2014
peer-reviewedMost quantitative traits considered in livestock evolve over time and several continuous functions have been proposed to model this change.
Chalh, A., El Gazzah, M.
core  

A composite‐loss graph neural network for the multivariate post‐processing of ensemble weather forecasts

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
The dual graph neural network (dualGNN), trained with a composite loss combining the energy score (ES) and variogram score (VS), consistently outperformed models optimized solely for ES or the continuous ranked probability score in the multivariate setting, as well as empirical copula approaches.
Mária Lakatos
wiley   +1 more source

Checking Process Stability with the Variogram [PDF]

open access: yesQuality Engineering, 2005
Modern quality control methods are increasingly being used to monitor complex industrial processes. A key requirement for such methods is the derivation of long records.
Bisgaard, S., Kulahci, M.
openaire   +2 more sources

COBASE: A new copula‐based shuffling method for ensemble weather forecast postprocessing

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We propose COBASE, a novel copula‐based postprocessing methododology that combines the strengths of multivariate parametric correction with non‐parametric rank‐based approaches. We consider two case studies for multi‐site temperature in Austria and multi‐site temperature and dew‐point temperature in the Netherlands.
Maurits Flos   +4 more
wiley   +1 more source

Componentes de la variabilidad espacial en el manejo por sitio específico en banano Components of the spatial variability in site-specific management in banana

open access: yesPesquisa 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

Type 2 diabetes, but not obesity, prevalence is positively associated with ambient temperature [PDF]

open access: yes, 2016
Acknowledgements This study was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB13030000), the National Science foundation of China (microevolution program NSFC91431102) and the 1000 talents program.
Heidari-Bakavoli, Sahar   +1 more
core   +1 more source

A new method to identify and explain sources of precipitation modification, illustrated for the western Netherlands

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
This study develops a method to identify the source areas of precipitation events, as illustrated for the western part of the Netherlands. Radar‐based precipitation data are traced back to their source areas and machine‐learning techniques are used to identify hypothesized causes: urban heat, surface roughness, and air pollution. We find that urban and
Jelmer van der Graaff   +1 more
wiley   +1 more source

Production Characteristics with Different Superimposed Modes Using Variogram: A Case Study of a Super-Giant Carbonate Reservoir in the Middle East

open access: yesEnergies, 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

Statistical Analysis of PM10 Concentration in the Monterrey Metropolitan Area, Mexico (2010–2018)

open access: yesAtmosphere, 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

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