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조건호,Cho, Kun-Ho 한국국방경영분석학회 1980 한국국방경영분석학회지 Vol.6 No.1
The goal of this study is to make the government/users decide rationally with regards to the problems of the weapon systems management. Therefore it is necessary to develop how much precisely and through what methods the system should be cost. That costing policies should be determined under the considerations of the estimating expense and the expected benefit due to the applications of cost informations. After that, it must also be decided where the cost informations are used. We can suggest the cost results be used to find the most reasonable system among alternatives, the best producer, the most benevolent policy for user, and so on.
First record for the genus Baeochila Drake and Poor, 1937 (Hemiptera: Tingidae) in South Korea
조건호,Eric Guilbert,이승환 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.4
New distributional record from South Korea is presented for Baeochila scitula. Diagnosis and images are presented and a key to species of the genus is provided for distinguishing included taxa.
Analysis of Clustered Binominal Data Using Logistic-GLMMs
조건호 한국자료분석학회 2009 Journal of the Korean Data Analysis Society Vol.11 No.1
Correlated or heterogeneous response data which are usually clustered by trials, hospitals, families or subjects can be analyzed using random-effect models including generalized linear mixed models(GLMMs). In this paper we propose how to model the clustered meta-binominal data using logistic-GLMMs and to fit the models via SAS PROC NLMIXED. Here, the correlated random effects are allowed to model the variations in both the odds ratio and the treatment effect across trials, which can be at least two possible sources of inter-trial heterogeneity in outcomes. The proposed method is illustrated with a meta-analysis data set on 22 trials for respiratory tract infections. We also demonstrate that an appropriate model can be confirmed via model-selection criteria. From the final model we find that there is little difference in the treatment effects across trials and the treatment is shown to be effective, while there appears to be substantial variation in the log-odds ratio for infections across trials.
Check list of lace bugs (Hemiptera: Tingidae) of Korea
조건호,Wongun Kim,Young Sam Kwon,Seung Hwan Lee 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.3
Tingidae (Hemiptera) of Korea are revised based on literature review as well as recently collected material and museum collections. A genus is recorded for the first time from South Korea for Acalpyta marginata. One species, Stephanitis typica, is removed from Korea. As a result, a total of 39 species in 17 genera, two subfamilies are recognized. An updated checklist including known distributions and host plant information in Korea is provided.
Multivariate Survival Analysis via Model Selection
조건호 한국자료분석학회 2006 Journal of the Korean Data Analysis Society Vol.8 No.4
Recently, several frailty models have been developed and widely used for analyzing multivariate survival data. Generally, selecting a suitable model among a set of candidate models is very important in data analysis. In this paper we propose a model selection criterion for semi-parametric frailty models. The proposed method is based on the conditional likelihood, a component of hierarchical likelihood and is an extension of conditional Akaike information(Vaida and Blanchard, 2005) for mixed linear models to the frailty models. The proposed method is illustrated using a well-known real data set. Here we show how to select and analyze an appropriate model