Results 71 to 80 of about 32,345 (261)

Prediction of spatial distribution characteristics of ecosystem functions based on a minimum data set of functional traits of desert plants

open access: yesFrontiers in Plant Science, 2023
The relationship between plant functional traits and ecosystem function is a hot topic in current ecological research, and community-level traits based on individual plant functional traits play important roles in ecosystem function.
Yudong Chen   +20 more
doaj   +1 more source

On a novel approach for optimizing composite materials panel using surrogate models [PDF]

open access: yes, 2011
This paper describes an optimization procedure to design thermoplastic composite panels under axial compressive load conditions. Minimum weight is the goal. The panel design is subject to buckling constraints.
Akcay-Perdahcioglu, D.   +3 more
core   +1 more source

Feature-free regression kriging

open access: yes
Spatial interpolation is a crucial task in geography. As perhaps the most widely used interpolation methods, geostatistical models -- such as Ordinary Kriging (OK) -- assume spatial stationarity, which makes it difficult to capture the nonstationary characteristics of geographic variables.
Luo, Peng, Wu, Yilong, Song, Yongze
openaire   +2 more sources

Comparison of Conventional, Rake, and Sonar‐Based Biophysical Habitat Measurements in a Shallow Ontario River

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Knowledge of habitat availability is critically important for the management and recovery of freshwater species. Quantifying habitat availability often requires fine‐scale sampling at point‐based locations across a large geographic extent, which can be laboursome.
Karl A. Lamothe   +2 more
wiley   +1 more source

Using NDVI and guided sampling to develop yield prediction maps of processing tomato crop

open access: yesSpanish Journal of Agricultural Research, 2015
The use of yield prediction maps is an important tool for the delineation of within-field management zones. Vegetation indices based on crop reflectance are of potential use in the attainment of this objective.
Rafael Fortes   +4 more
doaj   +1 more source

Mapping soil carbon, particle-size fractions, and water retention in tropical dry forest in Brazil [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2016
The objective of this work was to compare ordinary kriging with regression kriging to map soil properties at different depths in a tropical dry forest area in Brazil.
Gustavo Mattos Vasques   +4 more
doaj   +2 more sources

Reliability-based design optimization using kriging surrogates and subset simulation

open access: yes, 2011
The aim of the present paper is to develop a strategy for solving reliability-based design optimization (RBDO) problems that remains applicable when the performance models are expensive to evaluate.
Bourinet, J. -M.   +2 more
core   +3 more sources

On daily interpolation of precipitation backed with secondary information [PDF]

open access: yes, 2010
This paper investigates the potential impact of secondary information on rainfall mapping applying Ordinary Kriging. Secondary information tested is a natural area indicator, which is a combination of topographic features and weather conditions.
Ahrens, Bodo, Krähenmann, Stefan
core   +2 more sources

Changes of Potential Suitable Areas for Lynx Under Climate Change in Mohe Area, Daxing'anling Mountains, China

open access: yesWildlife Letters, EarlyView.
Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu   +5 more
wiley   +1 more source

A Machine Learning Technique for Spatial Interpolation of Solar Radiation Observations

open access: yesEarth and Space Science, 2021
This study applies statistical methods to interpolate missing values in a data set of radiative energy fluxes at the surface of Earth. We apply Random Forest (RF) and seven other conventional spatial interpolation models to a global Surface Solar ...
Thomas Leirvik, Menghan Yuan
doaj   +1 more source

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