http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
토픽모델링을 활용한 한국산업경영시스템학회지의 최근 연구주제 분석
박동준,구평회,오형술,윤민 한국산업경영시스템학회 2023 한국산업경영시스템학회지 Vol.46 No.3
The advent of big data has brought about the need for analytics. Natural language processing (NLP), a field of big data, has received a lot of attention. Topic modeling among NLP is widely applied to identify key topics in various academic journals. The Korean Society of Industrial and Systems Engineering (KSIE) has published academic journals since 1978. To enhance its status, it is imperative to recognize the diversity of research domains. We have already discovered eight major research topics for papers published by KSIE from 1978 to 1999. As a follow-up study, we aim to identify major topics of research papers published in KSIE from 2000 to 2022. We performed topic modeling on 1,742 research papers during this period by using LDA and BERTopic which has recently attracted attention. BERTopic outperformed LDA by providing a set of coherent topic keywords that can effectively distinguish 36 topics found out this study. In terms of visualization techniques, pyLDAvis presented better two-dimensional scatter plots for the intertopic distance map than BERTopic. However, BERTopic provided much more diverse visualization methods to explore the relevance of 36 topics. BERTopic was also able to classify hot and cold topics by presenting ‘topic over time’ graphs that can identify topic trends over time.
Statistica Basic Language 를 이용한 통계 교육
박동준 한국수학교육학회 1999 수학교육논문집 Vol.8 No.-
수학 통계용 그래픽 계산기와 통계 자료 분석용 소프트웨어를 활용하는 외국과 국내의 통계 교육의 추세를 소개한다. 그리고 통계 자료 분석용 소프트웨어인 Statistica의 특징을 요약한 다음 통계학을 효과적으로 교육하기 위하여 Statistica에서 제공되는 Statistica Basic Language로 프로그램한 세 가지 모듈을 제시한다. 프로그램을 입력하는 과정을 간단히 설명한 후 각 모듈을 소개한다. 처음 모듈은 숫자 값으로 표현되는 계량 자료에 대한 단순 통계량들을 구하기 위하여 분석하려는 원시 자료를 Sprea-dsheet에 입력한 다음 Statistica Basic Language로 프로그램한 모듈을 실행시킴으로써 한 번에 입력 자료에 대한 단순 통계량의 결과들을 볼 수 있도록 하였다. 둘째로 1에서 100까지 숫자들을 단순 랜덤 비복원 추출하는 과정을 프로그램한 모듈을 제시하였다. 마지막으로 프로그램한 모듈에서 제시되는 윈도우에 균일 분포에서 단순 랜덤 복원 추출하기 위한 표본의 크기와 샘플링 반복 횟수를 입력하면 표본 평균의 도수분포표와 도수분포도가 작성되어 표본 평균의 분포가 중심극한정리를 따르는가를 확인하였다.
박동준,윤민,강병환,김호균 한국산업경영시스템학회 2018 한국산업경영시스템학회지 Vol.41 No.4
The International Organization for Standardization (ISO) published ISO 9001 Quality Management System (QMS)-Requirements in 1987 and has revised four times since then. ISO 9001:2015 is the latest edition. This latest edition has two most noticeable changes. The first major change of new edition focuses on performance with an emphasis on Risk-Based Thinking (RBT) to enhance the process approach. The new edition consists of ten clauses whose first three clauses are largely same as older edition but risks are clearly stated and stressed in last seven clauses, emphasizing on Plan-Do-Check-Act cycle at all levels in the organization. The second major change is that the new edition has the same overall structure as other ISO management system standards known as High Level Structure (HLS) with Annex SL. The companies obtained the certificate of new ISO 9001:2015 QMS by September 15, 2018 in order to maintain as an ISO QMS registered firm. In this article we collected transition audit data from more than 100 companies that registered ISO 9001:2015 QMS for recent three years. We performed a statistical analysis to disclose the relationships between the characteristics of companies and the minor nonconformities found in ISO 9001:2015 requirements during transition audit processes. We also aim to interpret the findings and deduce the implications of the statistical results.
OHSAS 18001:2007 심사 결과의 실증적 연구
박동준,강병환,김호균 대한산업공학회 2015 대한산업공학회 춘계학술대회논문집 Vol.2015 No.4
OHSAS (Occupational Health and Safety Management System) registration has been an important issue as safety and health for employees become top priority. Once companies have registered OHSAS, they have to be audited every six months by an external party. In our article we collected audit data from more than fifty companies that OHSAS 18001:2007 was implemented. The companies with registration are classified based on their industry characteristics type. The audit data from the companies are statistically analyzed to discover the relationship between classification of industry type and the average number of audit data by using ANOVA, polynomial regression analysis, and t-tests. The maturity of OHSAS registration are also investigated. Finally the results of statistical analysis are interpreted and comments are provided.
ISO 9000시리즈 품질인증의 국내현황과 밸브제조업체의 사례
박동준,정현석 한국산업경영시스템학회 1996 한국산업경영시스템학회지 Vol.19 No.38
ISO 9000 Series International Standard have been established in 1987 and world trading patterns have changed into the request of ISO 9000 series approval. About 1100 domestic companies have currently obtained ISO 9000 series approval from domestic or foreign certification bodies. This paper presents the current status of ISO approval of domestic industries, a case study of a valve manufacturing company in Pusan, procedures for obtaining ISO approval, predictable effects as a result of approval, and recommendations.