نتایج جستجو برای: variable autocorrelation statistical methods ultimately

تعداد نتایج: 2363820  

Journal: :Journal of Space Weather and Space Climate 2022

The Mansurov effect is related to the interplanetary magnetic field (IMF) and its ability modulate global electric circuit, which further hypothesized impact polar troposphere through cloud generation processes. We investigate connection between IMF B y -component surface pressure by using daily ERA5 reanalysis for geopotential height since 1980. Previous studies produce a 27-day cyclic respons...

Journal: :Ecological Informatics 2013
Kévin Le Rest David Pinaud Vincent Bretagnolle

a r t i c l e i n f o Planning actions for species conservation involves working at both an ecologically meaningful spatial scale and a scale suitable for implementing management or conservation plans. Animal populations and conservation policies often operate across wide areas. Large-extent spatial datasets are thus often used, but their analyses rarely deal with problems inherent to spatial d...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1391

abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...

2005
Andrea Sell Dyminski John Howie Alessander Kormann

Soil variability is a complex attribute that can affect geotechnical engineering design. This paper presents the initial stage of a study into the variability of soil proprieties at the Port of Navegantes, southern Brazil. This study is based on laboratory and field tests that were done as part of the Port enlargement planning. The database consisted of SPT, Vane, soil characterization, oedomet...

2017
Maarten Marsman Gunter Maris Timo Bechger Cees Glas

The Single Variable Exchange algorithm is based on a simple idea; any model that can be simulated can be estimated by producing draws from the posterior distribution. We build on this simple idea by framing the Exchange algorithm as a mixture of Metropolis transition kernels and propose strategies that automatically select the more efficient transition kernels. In this manner we achieve signifi...

Journal: :Behavior research methods 2013
William R Shadish David M Rindskopf Larry V Hedges Kristynn J Sullivan

Researchers in the single-case design tradition have debated the size and importance of the observed autocorrelations in those designs. All of the past estimates of the autocorrelation in that literature have taken the observed autocorrelation estimates as the data to be used in the debate. However, estimates of the autocorrelation are subject to great sampling error when the design has a small...

2002
P. S. Lee H. R. Piehler A. D. Rollett B. L. Adams

Two new graphical methods are presented for microstructural analysis of crystalline material. These analyses are intended to aid an understanding of deformation behavior at scales larger than the grain size. The correlation of orientation over large distances has rarely been investigated since long-range correlation has been assumed to be negligible, if present at all. The first method reveals ...

2011
Daniela Stojanova Michelangelo Ceci Annalisa Appice Donato Malerba Saso Dzeroski

Spatial autocorrelation is the correlation among data values, strictly due to the relative location proximity of the objects that the data refer to. This statistical property clearly indicates a violation of the assumption of observation independence a pre-condition assumed by most of the data mining and statistical models. Inappropriate treatment of data with spatial dependencies could obfusca...

Journal: :Bulletin of the Entomological Society of America 1968

Journal: :Applied surface science advances 2022

The failure of roughness parameters to predict surface properties stems from their inherent scale-dependence; in other words, the measured value depends on how parameter was measured. Here we take advantage this scale-dependence develop a new framework for characterizing rough surfaces: Scale-Dependent Roughness Parameters (SDRP) analysis, which yields slope, curvature, and higher-order derivat...

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