نتایج جستجو برای: using cochran

تعداد نتایج: 3389010  

2005
TIM D. COCHRAN TAEHEE KIM

We establish certain “nontriviality” results for several filtrations of the smooth and topological knot concordance groups. First, as regards the n-solvable filtration of the topological knot concordance group, C, defined by K. Orr, P. Teichner and the first author: 0 ⊂ · · · ⊂ F(n.5) ⊂ F(n) ⊂ · · · ⊂ F(1.5) ⊂ F(1.0) ⊂ F(0.5) ⊂ F(0) ⊂ C, we refine the recent nontriviality results of Cochran and...

Journal: :Epidemiology 2015
Tarik Benmarhnia Séverine Deguen Jay S Kaufman Audrey Smargiassi

BACKGROUND Addressing vulnerability to heat-related mortality is a necessary step in the development of policies dictated by heat action plans. We aimed to provide a systematic assessment of the epidemiologic evidence regarding vulnerability to heat-related mortality. METHODS Studies assessing the association between high ambient temperature or heat waves and mortality among different subgrou...

Journal: :Wiley series in probability and statistics 2023

The Cochran–Mantel–Haenszel (CMH) tests apply when every treatment is present on block or stratum and responses are categorical. This chapter explains the most elementary of incomplete designs, balanced design (BIBD), in part to see how CMH methods can aid analysis for such designs. relationship shows that adjusted Durbin test ANOVA F essentially same test, so both equality mean ranks, not mere...

Journal: :International journal of engineering. Transactions C: Aspects 2022

The purpose of this paper is to investigate the effective factors in accepting marketing through mobile social media by end users. research method, descriptive-survey and type practical based on purpose. statistical population study online customers phones from Mobile Online website 2019. Infinite (384) was selected as sample according Cochran formula. Data collection accomplished questionnaire...

2014
Su Yeon Ko Hye Sun Lee Eun-Kyung Kim Jin Young Kwak

PURPOSE To verify the usefulness of the Thyroid Imaging Reporting and Data System (TI-RADS) for thyroid nodule diagnosis by less experienced physicians. METHODS From March 2012 to May 2012, ultrasonography-guided fine needle aspiration was performed in 204 thyroid nodules in 195 consecutive patients by four less experienced radiologists (<1 year in thyroid imaging). The number of suspicious u...

2004
TIM D. COCHRAN

We establish nontriviality results for certain filtrations of the smooth and topological knot concordance groups. First, as regards the n-solvable filtration of the topological knot concordance group, C, defined by K. Orr, P. Teichner and the first author [COT1]: 0 ⊂ · · · ⊂ F(n.5) ⊂ F(n) ⊂ · · · ⊂ F(1.5) ⊂ F(1.0) ⊂ F(0.5) ⊂ F(0) ⊂ C, we refine the recent nontriviality results of Cochran and Te...

Journal: :Thorax 2013
Pei-Chun Chan Chin-Hui Yang Luan-Yin Chang Kwei-Feng Wang Yi-Chen Kuo Chou-Jui Lin Shih-Wei Lee Po-Ren Hsueh Chi-Tai Fang Li-Min Huang

OBJECTIVES To address whether the effect of BCG vaccination against tuberculosis (TB) infection lasts to adulthood. METHODS A cross-sectional study on the prevalence of latent TB infection (LTBI) among HIV-negative men, using QuantiFERON-TB Gold In-tube (QFT-IT), was conducted at a prison in northern Taiwan with >3000 inmates. A QFT-IT ≥0.35 IU/ml was defined as LTBI. A QFT-IT ≥0.7 IU/ml was ...

1998
Anita L. Cochran Harold F. Levison Peter Tamblyn S. Alan Stern Martin J. Duncan

The limiting magnitude of the HST data set used by Cochran et al. (1995) to detect small objects in the Kuiper belt is reevaluated, and the methods used are described in detail. It is shown, by implanting artificial objects in the original HST images, and re-reducing the images using our original algorithm, that the limiting magnitude of our images (as defined by the 50% detectability limit) is...

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