Sample size effect on the dynamic torsional behaviour of the 2A12 aluminium alloy

Autor: J.H. Chen, W.F. Xu, R.Z. Xie, F.J. Zhang, W.J. Hu, X.C. Huang, G. Chen

Publikováno v: Theoretical and Applied Mechanics Letters, Vol 7, Iss 6, Pp 317-324 (2017)

In order to investigate the effect of sample size on the dynamic torsional behaviour of the 2A12 aluminium alloy. In this paper, torsional split Hopkinson bar tests are conducted on this alloy with different sample dimensions. It is found that with t

Externí odkaz: https://doaj.org/article/fb70666ad80b4d6abecf302dc4b8941b

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The occurrence of Simpson's paradox if site-level effect was ignored in the TREAT Asia HIV Observational Database

Autor: P.L. Lim, C. Ezhilarasi, Aizobelle Huelgas, Thira Sirisanthana, N. Han, Tuti Parwati Merati, W.W. Wong, Wilai Kotarathititum, P. Kambua, F. Yuliana, Anchalee Avihingsanon, R. David, M.G. Law, W. Lam, Sirinya Teeraananchai, David C Boettiger, D.T.H. Nguyen, S Pujari, W.W. Ku, Mahiran Mustafa, Iskandar Azwa, R. Bantique, Evy Yunihastuti, Adeeba Kamarulzaman, R. Sriondee, Elenore Judy B. Uy, Shinichi Oka, P.C.K. Li, B.L.H. Sim, T. Nishijima, Y.M. Gani, Alvina Widhani, H.L. Ha, Vohith Khol, R. Martinez-Vega, Ezhilarasi Chandrasekaran, Nicolas Durier, P. Chusut, Winai Ratanasuwan, Sasisopin Kiertiburanakul, Suneeta Saghayam, N. Nordin, N. Sanmeema, Junko Tanuma, Dewa Nyoman Wirawan, Sineenart Taecharoenkul, H.X. Zhao, Somnuek Sungkanuparph, P.C. Wu, R. Ditangco, Sharifah Faridah Syed Omar, K.V. Nguyen, T.T. Pham, Matthew Law, S. Gaikwad, D.D. Cuong, M.P. Lee, O.T. Ng, B. Petersen, Jutarat Praparattanapan, N. Kumarasamy, Gang Wan, D. Imran, Awachana Jiamsakul, D.T. Nguyen, K Ruxrungtham, Kedar Joshi, J.M. Kim, Sasheela Ponnampalavanar, A.H. Sohn, F.J. Zhang, J.Y. Choi, Stephen J. Kerr, A. Chitalikar, Y.T. Chan, Praphan Phanuphak, Penh Sun Ly, L. Chumla, Pacharee Kantipong, S. Na, Romanee Chaiwarith, V.H. Bui, David A. Cooper, L.S. Lee, A. Jiamsakul, P.S. Ly

Publikováno v: Journal of Clinical Epidemiology. 76:183-192

Objectives In multisite human immunodeficiency virus (HIV) observational cohorts, clustering of observations often occurs within sites. Ignoring clustering may lead to “Simpson's paradox” (SP) where the trend observed in the aggregated data is re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bab6db8ae235492badd55006d7544a5
https://doi.org/10.1016/j.jclinepi.2016.01.030

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