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Author:Gi-Sung Lee , Daiho Uhm , Jong-Min Kim
Data Source:[J].Statistics(IF 1.258), 2014, Vol.48 (3), pp.685-709Taylor & Francis
Abstract:We propose new variants of Land et al.’s [Estimation of a rare sensitive attribute using Poisson distribution. Statistics. 2011. DOI: 10.1080/02331888.2010.524300] randomized response model when a population consists of some clusters and the population is stratified with som...
Author:Gi-Sung Lee , Daiho Uhm , Jong-Min Kim
Data Source:[J].Statistics(IF 1.258), 2013, Vol.47 (3), pp.575-589Taylor & Francis
Abstract:This study proposes the estimators for the mean and its variance of the number of respondents who possessed a rare sensitive attribute based on stratified sampling schemes (stratified sampling and stratified double sampling). This study deals with the extension of the estima...
Author:Daiho Uhm , Fred W. Huffer , Cheolyong Park
Data Source:[J].Communications in Statistics - Simulation and Computation(IF 0.295), 2011, Vol.40 (9), pp.1458-1477Taylor & Francis
Abstract:We study a weighted least squares estimator for Aalen's additive risk model with right-censored survival data which allows for a very flexible handling of covariates. We divide the follow-up period into intervals and assume a constant hazard rate in each interval. The model is mo...
Author:Bun Song Lee , Mark E. Wohar , Daiho Uhm
Data Source:[J].International Journal of Sustainable Transportation, 2016, Vol.10 (9), pp.861-880Taylor & Francis
Abstract:ABSTRACT(#br)Most previous studies that examine the controversies involved in transit subsidies concentrate on large metropolitan areas in the United States. The main contribution of this article to the extant literature is that it investigates bus ridership data in small- and me...
Author:Babak Memarian , “David” Hyung Seok Jeong , Daiho Uhm
Data Source:[J].Transport Policy, 2012, Vol.21, pp.52-62Elsevier
Abstract:Abstract(#br)On-board survey is one of the most common survey methods utilized on transit units like buses to obtain vital information regarding customer trip characteristics, travel behavior, demographic characteristics, and customers’ attitude toward services. The quantity...
Author:Ji Hoon Song , Seung Won Yoon , Daiho Uhm
Data Source:[J].Leadership & Organization Development Journal, 2012, Vol.33 (7), pp.616-631Emerald
Abstract:Purpose(#br) – This study developed a systematic measurement scale for the organizational knowledge creation practices. The authors used five knowledge creation phases – sharing tacit knowledge, creating concepts, justifying concepts, building prototypes, and cross-leveling ...
Author:Ji Hoon Song , Daiho Uhm , Seung Won Yoon
Data Source:[J].Leadership & Organization Development Journal, 2011, Vol.32 (3), pp.243-259Emerald
Abstract:Purpose(#br) – The purpose of this paper is to develop and validate a measurement tool for assessing organizational knowledge creation practices based on the socialization, externalization, combination, and internalization (SECI) processes of the knowledge creation theory. (...

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