• Communications for Statistical Applications and Methods
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• 제10권1호
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• pp.79-88
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• 2003

In this paper, we study the efficiency of the stratified estimator in related with the variance lower bound of Horvitz-Thompson estimator subject to the superpopulation model. Especially, we compare the variance lower bound of optimum allocation with that of power allocation subject to Dalenius-Hedges stratification.

• 한국도서관정보학회지
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• 제40권3호
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• pp.69-96
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• 2009

지난 해 8월 대통령 소속의 도서관정보정책위원회가 수립 공표한 '도서관발전종합계획'에 '국가 지식정보 활용을 위한 국가도서관 체계 재정립'이 주요 정책과제의 하나로 포함되어 있다. 이에 본 연구는 주요 선진국 및 국내의 주제별 국가도서관 체계를 집중 분석하고 그들의 상대적 격차를 비교하였다. 이러한 분석과 비교는 후속 연구과제인 '한국 국가도서관의 주제별 체계화 방안'을 제시하기 위한 논거로 삼는데 목적이 있다.

• 대한간호학회지
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• 제33권2호
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• pp.246-255
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• 2003

Purpose: This study was designed to compare direct cost and indirect cost between home care and hospital care according to subject's characteristics. Method: The subjects of this study were patients with cerebrovascular disease. They were 50 patients in six university hospitals and 49 in four home care centers. Data were collected by using two type of questionnaires and reviewing medical records, home care service records and medical-fee claims from April 4th to September 13th, 2001. Result: The results were as follows; First, there was a statistically significant difference of direct cost between home care and hospital care, however, there was not a statistically significant difference of indirect cost. Second, according to subject's characteristics, six variables had statistically significant differences; sex, age, marital status, economy, job and diagnosis. Conclusion: It was found that cost-saving effect of home care was affected by subject's characteristic factors. More study needs to be done to develop a more detailed selection criteria for home care subjects.

• 공학교육연구
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• 제19권5호
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• pp.48-56
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• 2016

The purpose of this study is to introduce the math-clinic programs which offer to engineering students and to compare the subject satisfaction between participants and non-participants. Five math-clinic programs are operated and 1397 students took part in this study. As a result, the Likert-type scales of satisfaction with three programs; the exercise problems solving class, the tutoring program and the achievement tests, were 4.07, 4.05 and 3.95, respectively(5-point Likert-type scale). And we found that the participants expressed higher subject satisfactions than nonparticipations did.

• 한국가정과교육학회지
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• 제10권1호
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• pp.107-122
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• 1998

The purpose of this study was to compare and analyze subject matters opened on Dept of Home Economics Education in Korea and U.S.A. For this study, 17 undergraduate catalog and college course guidelines of Korea and the 15 undergraduate catalog and course guidelines of U.S.A. were collected. Collected materials were compared and analyzed. For this comparision and analysis, classified the subject matters as three steps based on these data. Collected data were analyzed by arithmetic mean, percentage, frequency. The conclusions are as followings ; 1. The number of the Home Economics Education relative subject matters opened in Korea is 10% below, and U.S.A.'s is 20~30%. The ratio of U.S.A. is higher than that of Korea. 2. The domain of clothes & textiles and foods and nutrition is 50% in Korea, So, There is unbalance in Korea. 3. U.S.A. oftened various names of subject matters by characteristics more than in Korea.

• Journal of the Korean Data and Information Science Society
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• 제16권4호
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• pp.725-733
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• 2005

A system subject to random shocks is considered. The shocks arrive according to a Poisson process and the amount of each shock is exponentially distributed. In this paper, a periodic inspection policy for the system is compared with a random inspection policy. After assigning several maintenance costs to the system, we calculate and compare the long-run average costs per unit time under two policies.

• 한국과학교육학회지
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• 제24권3호
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• pp.481-498
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• 2004

The purpose of this study was to compare and analyse the subject organization and teaching units of middle school science curriculums and science textbooks, by studying the organization of subject matter and content scope and level of middle school science subject in South and North Korea. As a result of this study, the composition, scope, and level of content between middle school science textbooks in South and North Korea were similar. However, the study found that science education objectives, separated science curriculum subject organization, economical efficiency weighted format and organization of science subject matter, result-centered experiments, the enlightenment of Kim Ilsung and his son in North Korea science education were very far from the desirable direction of science education. Therefore, the view on level-based curriculum and organization of the science curriculum should be integrated, and preparation of student-centered organization of textbooks and expansion of science-technology-society content is needed before unification. And also, the united Korea science curriculum shouldn't simply compromise or neutralize between middle school science curriculum in South and North Korea. They should make a future-oriented plan for information and globalism society.

• 전기학회논문지P
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• 제53권4호
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• pp.216-222
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• 2004

This research is that concern in mathematics education of Technical high school Department of Electricity in the 7th educational curriculum. we indicated problem compare 7th with 6th mathematics curriculum subject contents in Technical high school Department of Electricity. And examine major subject contents, analyzed contents of mathematics that must supplement and mathematics which use in major subject. Established contents of electricity mathematics education that need to major learning to satisfy target of technical high school technical education that is presented in the 7th training courses with this analysis. Also, we hope these results are into consideration when writing new mathematics text in Technical high school Department of Electricity.

• Communications for Statistical Applications and Methods
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• 제27권5호
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• pp.569-578
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• 2020

Various graph clustering methods have been introduced to identify communities in social or biological networks. This paper studies the entropy-based and the Markov chain-based methods in clustering the undirected graph. We examine the performance of two clustering methods with conventional methods based on quality measures of clustering. For the real applications, we collect the mathematical subject classification (MSC) codes of research papers from published mathematical databases and construct the weighted code-to-document matrix for applying graph clustering methods. We pursue to group MSC codes into the same cluster if the corresponding MSC codes appear in many papers simultaneously. We compare the MSC clustering results based on the several assessment measures and conclude that the Markov chain-based method is suitable for clustering the MSC codes.

• 한국컴퓨터정보학회논문지
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• 제20권11호
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• pp.17-23
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• 2015

In this paper, we propose a plural subject account of group beliefs using grounding concept, which bridges the gap between the two main approaches of ACLs, the mentalistic accounts and the social commitment accounts. The key idea of this Gilbert's plural subject account of group beliefs is to extend the grounding logic into the common ground framework for the semantics of ACLs which is fully verifiable, fully formalized and easily applicable. Thus, we formalize the proper group belief concept using common ground framework and we define the semantics of the primitive speech acts of FIPA-ACL such as inform, request and confirm as case studies. Also, we illustrate our framework on an e-commerce agent purchase negotiation and compare this proposed framework with two traditional semantics for ACLs.