Results 31 to 40 of about 1,456,033 (346)

Trend analysis and homogeneity tests in temperature and rainfall in Nigeria [PDF]

open access: yesGeoreview
Climate change has significantly altered global weather patterns, with notable impacts in Nigeria. The main objective of this study was to examine the trends, variability, and homogeneity in temperature and rainfall in Nigeria.
Alexander Oghenerukevwe EYEFIA
doaj   +1 more source

Mediated homogenization [PDF]

open access: yesPhysical Review A, 2007
Homogenization protocols model the quantum mechanical evolution of a system to a fixed state independently from its initial configuration by repeatedly coupling it with a collection of identical ancillas. Here we analyze these protocols within the formalism of "relaxing" channels providing an easy to check sufficient condition for homogenization.
BURGARTH D, GIOVANNETTI, VITTORIO
openaire   +4 more sources

Genomic homogeneity in fibrolamellar carcinomas [PDF]

open access: yes, 2001
Background-Fibrolamellar carcinoma (FLC) is a variant of hepatocellular carcinoma (HCC) with distinctive clinical and histological features. To date there have been few studies on the genotypic aspects of FLC and no previous attempts have been made to ...
Davidson, BR   +4 more
core   +1 more source

Searching for the scale of homogeneity [PDF]

open access: yes, 1998
We introduce a statistical quantity, known as the $K$ function, related to the integral of the two--point correlation function. It gives us straightforward information about the scale where clustering dominates and the scale at which homogeneity is ...
Graham, Matthew J.   +3 more
core   +2 more sources

Uji Homogenitas dengan Sebaran Khi-Kuadrat dalam Evaluasi Suatu Sistem

open access: yesComTech, 2011
This paper discusses the application of khi-square distribution in homogeneity of variance test on the control of a system used in a process considered normally spread with a mean of and a variance (degree of homogeneity) of .
Iwa Sungkawa
doaj   +1 more source

Homogeneous Permutations [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2002
There are just five Fraïssé classes of permutations (apart from the trivial class of permutations of a singleton set); these are the identity permutations, reversing permutations, composites (in either order) of these two classes, and all permutations. The paper also discusses infinite generalisations of permutations, and the connection with Fraïssé's ...
openaire   +2 more sources

Preparation of the Reference Materials for Rb-Sr and Sm-Nd Isotope Analysis

open access: yesYankuang ceshi, 2021
BACKGROUND: One Rb-Sr certified reference materials (GBW04411) and one Sm-Nd certified reference materials (GBW04419) for geological age, which are potash feldspar and basalt respectively, were produced and certified about 30 years ago.
TANG Suo-han   +4 more
doaj   +1 more source

New results on landscape boundaries [PDF]

open access: yesActa Geographica Debrecina. Landscape & Environment Series, 2011
The correct delineation of geographical and landscape ecological units, being the fundamental territorial domains of both physical and human geography, is very important from the aspect of several other related disciplines as well. It is hard to tell how
Teodóra Bata, Gábor Mezősi
doaj  

Topological Homogeneity for Electron Microscopy Images [PDF]

open access: yes, 2019
In this paper, the concept of homogeneity is defined, from a topological perspective, in order to analyze how uniform is the material composition in 2D electron microscopy images. Topological multiresolution parameters are taken into account to obtain
A Gonzalo   +18 more
core   +1 more source

850 hPa Geopotential Height Link with Iraqi Precipitation and Temperature [PDF]

open access: yesRevista Brasileira de Meteorologia
The study examines the connection between the geopotential height (Z850 hPa) and the temperature (°C) and precipitation (mm) in Iraq. The observation data for climatological parameters that are currently available from the Iraqi meteorological ...
Jasim Al-Khalidi   +3 more
doaj   +1 more source

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