Results 11 to 20 of about 1,973,931 (283)

Spatial variation (geographical) for electoral participation in the Karbala governorate for the two parliamentary elections 2005-2010 (a study in the geography of elections)

open access: yesآداب الكوفة, 2014
Elections geography is one of the contemporary applied fields of political geography, which is concerned with studying the spatial (geographical) variation of electoral voting, its patterns and causes, and interpreting and analyzing it, i.e.
مجيد شهاب, حيدر رزوق
doaj   +1 more source

Limits on the Time Evolution of Space Dimensions from Newton's Constant [PDF]

open access: yes, 2004
Limits are imposed upon the possible rate of change of extra spatial dimensions in a decrumpling model Universe with time variable spatial dimensions (TVSD) by considering the time variation of (1+3)-dimensional Newton's constant. Previous studies on the
Abdalla E.   +20 more
core   +1 more source

Effect of seasons on spatial variability of rainfall in the Niger Delta, Nigeria

open access: yesJournal of Applied Sciences and Environmental Management, 2018
The seasons are the important component of rainfall seasonality that determines the flourishing of agricultural and socio-economic activities in the tropics.
J.O. Adejuwon
doaj   +1 more source

Evaluation of spatial–temporal characteristics of precipitation using discrete maximal overlap wavelet transform and spatial clustering tools

open access: yesHydrology Research, 2021
In the present study, classical and proposed methods were used to investigate the monthly precipitation characteristics of 30 stations in the southeastern United States during 1968–2018. Maximal overlap discrete wavelet transform (MODWT) as preprocessing
Kiyoumars Roushangar   +3 more
doaj   +1 more source

Temporal and spatial variation of limnological variables and biomass of different macrophyte species in a Neotropical reservoir (São Paulo - Brazil) [PDF]

open access: yes, 2013
Aim: This study reports an investigation of limnological characteristics and aquatic macrophyte occurrence in a neotropical reservoir in order to assess the spatio-temporal variation of water and sediment variables and their influence on plant ...
Bottino, Flávia   +2 more
core   +2 more sources

Spatial variations of fundamental constants [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
We show that observational limits on the possible time variation of constants of Nature are significantly affected by allowing for both space and time variation. Bekenstein's generalisation of Maxwell's equations to allow for cosmological variation of $alpha$ is investigated in a universe containing spherically symmetric inhomogeneities.
Barrow, John D., O'Toole, Chris
openaire   +2 more sources

Spatial Variation in Soil Fungal Communities across Paddy Fields in Subtropical China

open access: yesmSystems, 2020
Fungi underpin almost all terrestrial ecosystem functions, yet our understanding of their community ecology lags far behind that of other organisms. Here, red paddy soils in subtropical China were collected across a soil depth profile, comprising 0-to-10-
Pengfa Li   +7 more
doaj   +1 more source

Effects of different tea plantation management systems on arthropod assemblages and network structure

open access: yesEcosphere, 2021
Tea plantations are intensive monocultures and vulnerable to various pests due to a low diversity of natural enemies. In ancient tea plantations, the trees have grown for hundreds of years in mixed stands with many native trees, resulting in a landscape ...
Yuanyuan Meng   +6 more
doaj   +1 more source

Study on the spatial variation of China’s territorial ecological space based on the standard deviation ellipse

open access: yesFrontiers in Environmental Science, 2022
With the rapid development of China’s economy and the acceleration of urbanization, the rapid expansion of urban space has led to a growing demand for land that has resulted in the destruction and expropriation of a large amount of ecological land in ...
Yang Zhang   +11 more
doaj   +1 more source

The Importance of Scale for Spatial-Confounding Bias and Precision of Spatial Regression Estimators [PDF]

open access: yes, 2009
Residuals in regression models are often spatially correlated. Prominent examples include studies in environmental epidemiology to understand the chronic health effects of pollutants.
Paciorek, Christopher J.
core   +3 more sources

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