Results 21 to 30 of about 3,431,524 (310)

Proposal and validation of geostatistical-based metrics to quantify within-field variability [PDF]

open access: yesRevista Brasileira de Ciência do Solo
Metrics are fundamental to quantify and classify the spatial dependence of soil and agricultural attributes. This study aimed to propose and validate metrics based on two distinct approaches, one additive, which considers the arithmetic mean of the ...
Enio Júnior Seidel   +1 more
doaj   +1 more source

PARRONDO GAMES WITH SPATIAL DEPENDENCE II [PDF]

open access: yesFluctuation and Noise Letters, 2012
Let game B be Toral's cooperative Parrondo game with (one-dimensional) spatial dependence, parameterized by N ≥ 3 and p0, p1, p2, p3 ∈ [0, 1], and let game A be the special case p0 = p1 = p2 = p3 = 1/2. In previous work we investigated μB and μ(1/2, 1/2), the mean profits per turn to the ensemble of N players always playing game B and always playing ...
Stewart N. Ethier, Jiyeon Lee
openaire   +5 more sources

Structural Interactions in Spatial Panels [PDF]

open access: yes, 2009
Cross-sectional and spatial dependence, Spatial weights matrix, Spatial interactions, Monetary policy committee, Generalised method of moments, E42, E43, E50, E58,
Bhattacharjee, Arnab   +4 more
core   +3 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

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 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  

Dundee Discussion Papers in Economics 253:Spatial Interactions in Hedonic Pricing Models: The Urban Housing Market of Aveiro, Portugal [PDF]

open access: yes, 2011
Spatial heterogeneity, spatial dependence and spatial scale constitute key features of spatial analysis of housing markets. However, the common practice of modelling spatial dependence as being generated by spatial interactions through a known spatial ...
Bhattacharjee, Arnab   +3 more
core   +1 more source

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

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

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