Results 21 to 30 of about 217,536 (268)

Continuous-Time Modelling with Spatial Dependence [PDF]

open access: yesSSRN Electronic Journal, 2011
(Spatial) panel data are routinely modeled in discrete time (DT). However, compelling arguments exist for continuous‐time (CT) modeling of (spatial) panel data. Particularly, most social processes evolve in CT, so that statistical analysis in DT is an oversimplification, gives an incomplete representation of reality, and may lead to misinterpretation ...
J. H. L. Oud   +3 more
openaire   +6 more sources

Effects of Tillage on Along-Row Variability of Wheat and Maize Biomass

open access: yesPlant Production Science, 2003
Spatial variability of wheat and maize biomass was studied under two tillage systems, minimum tillage (MT) and conventional moldboard plowing (CT). The above-ground biomass data were collected from 10 locations separated at 5 m intervals along the crop ...
Tomomi Nakamoto, Junko Yamagishi
doaj   +1 more source

Spatially constrained direction-dependent calibration [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Direction-dependent calibration of widefield radio interferometers estimates the systematic errors, along with multiple directions in the sky. This is necessary because with most systematic errors, which are caused by effects such as the ionosphere or the receiver beam shape, there is a significant spatial variation. Fortunately,
openaire   +2 more sources

The Concept of Space and its Measurement in Regional Studies [PDF]

open access: yesفصلنامه پژوهش‌های اقتصادی ایران, 2005
A large number of regional studies are now using data empirically on different dimensions of location (contiguity, distance), which are particularly concerned with the concept of "space".
Nematollah Akabari
doaj  

Mortality and Spatial Evolution of its Causes in Iran Counties in 2006-2010 [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2017
One of the main studies in the health planning of the countries and assessment of the pattern of life quality and enjoyment of the health care services and their success is the Study of mortality causes in the geographical zone.
Dr.Ali Goli, Dr. Mehrdad Askariyan
doaj   +1 more source

Spatially Dependent Electromagnetically Induced Transparency [PDF]

open access: yesPhysical Review Letters, 2015
Recent years have seen vast progress in the generation and detection of structured light, with potential applications in high capacity optical data storage and continuous variable quantum technologies. Here we measure the transmission of structured light through cold rubidium atoms and observe regions of electromagnetically induced transparency (EIT ...
Radwell, N.   +4 more
openaire   +4 more sources

Consistency of spatial dependence of soil chemical properties in two fields: a geostatistical study

open access: yesPlant, Soil and Environment, 2004
This study examined consistency of spatial variation of plant-available soil nutrients P, K, Mg and soil pH in two fields of an area of 54 and67.5 ha(haplic Luvisol and luvic Chernozem) in the region of Český Brod (Central Bohemia).
L. Brodský   +3 more
doaj   +1 more source

Sample arrangements and spatial variability characterization of dendometrics parameters of Eucalyptus camaldulensis and physical soil attributes

open access: yesRevista Ceres, 2021
To evaluate the performance of different sampling arrangements, this work aimed to study, in a field of Eucalyptus camaldulensis, the variability and spatial dependence of some attributes of plant and soil (LATOSSOLO VERMELHO Distrófico [Typic hapludox]).
César Gustavo da Rocha Lima   +5 more
doaj   +1 more source

Reducing Regional Disparity in Java: A Spatial Econometrics Approach

open access: yesJurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan, 2023
Regional disparity is one of the challenges faced by the government of developing Indonesia. Indonesian government focus on increasing equitable development by increasing physical and nonphysical connectivity through the National Medium-Term Development ...
Duwi Yunitasari   +2 more
doaj   +1 more source

A Classification for a Geostatistical Index of Spatial Dependence

open access: yesRevista Brasileira de Ciência do Solo
: In geostatistical studies, spatial dependence can generally be described by means of the semivariogram or, in complementary form, with a single index followed by its categorization to classify the degree of such dependence.
Enio Júnior Seidel   +1 more
doaj   +1 more source

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