Results 61 to 70 of about 1,124,360 (293)

An accurate test for homogeneity of odds ratios based on Cochran's Q-statistic [PDF]

, 2015
Background: A frequently used statistic for testing homogeneity in a meta-analysis of K independent studies is Cochran's Q. For a standard test of homogeneity the Q statistic is referred to a chi-square distribution with K - 1 degrees of freedom. For the
AF Schmidt, B Woolf, BJ Biggerstaff, BL Welch, DJ Gavaghan, DK Bhaumik, E Kulinskaya, E Kulinskaya, Elena Kulinskaya, GS James, IM Reis, J Mandel, J Sánchez-Meca, JJ Gart, JPT Higgins, K-J Lui, Michael B Dollinger, MP Jones, NE Breslow, R DerSimonian, R DerSimonian, RE Tarone, SR Paul, SR Paul, TB Huedo-Medina, W Viechtbauer, WG Cochran, WG Cochran, Z Bagheri   +28 more
core   +1 more source

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

Molecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns, Jaclyn S. Long, Sergio Lilla, Kelly Hodge, Marcus J. G. W. Ladds, Colin Nixon, Paula Fernández‐Palanca, Sara Zanivan, Pilar Acedo, Stephen P. Pereira, Kevin M. Ryan   +10 more
wiley   +1 more source

Poly-Weighted Exponentiated Gamma Distribution with Application

Journal of Statistical Theory and Applications (JSTA), 2020
This paper proposes a weighting of the exponentiated gamma distribution with a polynomial function called the poly-weighted exponentiated gamma distribution (PWEGD).
E. B. Nkemnole, E. M. Ikegwu
doaj   +1 more source

On estimation of high quantiles for certain classes of distributions [PDF]

Yugoslav Journal of Operations Research, 2015
We investigate the rate of convergence of the direct-simulation estimator ˆ xp(n) of a large quantile xp of the Pareto and Gamma distributions. The upper bound of the probability P{|xp(n)- xp|>ε is determined.
Stanojević Jelena
doaj   +1 more source

SPI-3 Analysis of Medjerda River Basin and Gamma Model Limits in Semi-Arid and Arid Contexts

Atmosphere, 2022
The Standardized Precipitation Index SPI-3, associated with three months of rainfall accumulation, is a drought index for detecting immediate drought impacts.
Zoubeida Kebaili Bargaoui, Sabrine Jemai
doaj   +1 more source

No evidence for gamma-ray halos around active galactic nuclei resulting from intergalactic magnetic fields

, 2010
We analyze the gamma-ray halo around stacked AGNs reported in Ap.J.Lett., 2010, 722, L39. First, we show that the angular distribution of gamma-rays around the stacked AGNs is consistent with the angular distribution of the gamma-rays around the Crab ...
Neronov, A., Semikoz, D. V., Tinyakov, P. G., Tkachev, I. I.   +3 more
core   +3 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Modelagem da ocorrência e da quantidade de chuva em Piracicaba Modeling of occurrence and rain amount in Piracicaba

Scientia Agricola, 1995
É proposto um modelo para descrever chuva diária de Piracicaba-SP em termos da sua ocorrência e da quantidade. Ambos, a ocorrência de dias com e sem chuva, quando considerados como seqüências de 31 dias a partir de determinada data, puderam ser bem ...
F. Neto de Assis, N.A. Villa Nova
doaj   +1 more source

Mathematical model of delay based on a system with gamma distribution

Физика волновых процессов и радиотехнические системы, 2021
This article is devoted to the analysis of a queuing system formed by two flows with density functions of the gamma distribution law in order to derive a solution for the average delay of requests in the queue, which is the main characteristic for any ...
Veniamin N. Tarasov
doaj   +1 more source

QCD factorizations in gamma* gamma* -> rho rho

, 2006
We calculate the lowest order QCD amplitude, i.e. the quark exchange contribution, to the forward production amplitude of a pair of longitudinally polarized $\rho$ mesons in the scattering of two virtual photons $\gamma^*(Q_1) \gamma^*(Q_2) \to \rho^0_L \
Anikin, Anikin, B. Pire, Blümlein, Brodsky, Diehl, Diehl, Diehl, Diehl, Efremov, Enberg, Ji, Ji, L. Szymanowski, Lansberg, Lepage, M. Segond, Mandelstam, Mankiewicz, Müller, Pire, Pire, Pire, Radyushkin, Radyushkin, S. Wallon   +25 more
core   +2 more sources