Results 1 to 10 of about 208,045 (268)

Empirical comparison of time series models and tensor product penalised splines for modelling spatial dependence in plant breeding field trials [PDF]

open access: yesFrontiers in Plant Science, 2023
Plant breeding field trials are typically arranged as a row by column rectangular lattice. They have been widely analysed using linear mixed models in which low order autoregressive integrated moving average (ARIMA) time series models, and the subclass ...
Beverley Gogel, Sue Welham, Brian Cullis
doaj   +2 more sources

Do trade flows interact in space? Spatial origin-destination modeling of gravity [PDF]

open access: yesInternational Trade, Politics and Development, 2022
Purpose – This study proposes spatial origin-destination threshold Tobit to address spatial interdependence among bilateral trade flows while accounting for zero trade volumes.
Shali Luo, Seung-Whan Choi
doaj   +1 more source

Pansharpening Based on Spectral-Spatial Dependence for Multibands Remote Sensing Images

open access: yesIEEE Access, 2022
Pansharpening based on detail injection (DI) explores panchromatic (PAN) images and injects their spatial geometrical information into multispectral (MS) images.
Lei Wu, Xunyan Jiang
doaj   +1 more source

Modeling the Determinants of PM2.5 in China Considering the Localized Spatiotemporal Effects: A Multiscale Geographically Weighted Regression Method

open access: yesAtmosphere, 2022
Many studies have identified the influences of PM2.5. However, very little research has addressed the spatiotemporal dependence and heterogeneity in the relationships between impact factors and PM2.5.
Han Yue   +5 more
doaj   +1 more source

Spatial Updating Depends on Gravity [PDF]

open access: yesFrontiers in Neural Circuits, 2020
As we move through an environment the positions of surrounding objects relative to our body constantly change. Maintaining orientation requires spatial updating, the continuous monitoring of self-motion cues to update external locations. This ability critically depends on the integration of visual, proprioceptive, kinesthetic, and vestibular ...
Alexander Christoph Stahn   +11 more
openaire   +5 more sources

VARIABILITY OF SOME SELECTED SOIL PARAMETERS IN A 50 YEARS INTENSIVELY CULTIVATED EXPERIMENTAL PLOT ON AN ALFISOL (IWO SERIES)

open access: yesTropical and Subtropical Agroecosystems, 2021
Background. Soil has variability inherent to how its formation factors interact within the landscape. Objective. This study was carried out to describe the variability of some selected physical and chemical soil properties in a 50 years intensively ...
Oluwabunmi Aderonke Denton   +3 more
doaj   +1 more source

An Analysis of the Effects of Spatial Dependence on Economic Growth Among Regencies and Cities in Java

open access: yesJurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan, 2023
Java is inarguably essential for Indonesia’s economy with its 59% contribution to the country’s GDP. However, behind the tremendous participation lies high regional disparity, poverty, and unemployment, which have become challenges to its economic ...
Ma’rufa Khotiawan   +2 more
doaj   +1 more source

Intensity-dependent spatial summation [PDF]

open access: yesJournal of the Optical Society of America A, 1985
Psychophysical evidence indicates that, in the human retina, the size of the spatial-summation area decreases as illuminance increases. Such a relationship would be beneficial for the detection of spatial contrast in the presence of photon noise. We analyze an image-processing mechanism in which the area of a strictly positive point-spread function ...
Cornsweet, Tom N, Yellott, John I
openaire   +4 more sources

Machine Learning of Spatial Data

open access: yesISPRS International Journal of Geo-Information, 2021
Properties of spatially explicit data are often ignored or inadequately handled in machine learning for spatial domains of application. At the same time, resources that would identify these properties and investigate their influence and methods to handle
Behnam Nikparvar, Jean-Claude Thill
doaj   +1 more source

Improved Rice Technology Adoption: The Role of Spatially-Dependent Risk Preference

open access: yesAgriculture, 2021
This study analyses farmers’ adoption of improved rice technology, taking into account farmers’ risk preferences; the unobserved spatial heterogeneity associated with farmers’ risk preferences; farmers’ household and farm characteristics; farm locations,
Omotuyole Isiaka Ambali   +2 more
doaj   +1 more source

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