• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2000년도 춘계공동학술대회 논문집
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• pp.1-4
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• 2000

In general, under the concept of unit load, Automated Storage/Retrieval Systems (AS/RS) have the rack of equal sized cells. However, they are inadequate and inefficient meeting the various sizes of customers' demands in today's business environment. Higher utilization and flexibility of warehouse storage can be achieved by using AS/RS with tile rack of modularized cell. In this paper, the model of AS/RS with the rack of modularized cell is proposed, and the effectiveness of proposed model is presented by way of numerical examples. The model developed in this research, as one type of AS/RS that is more flexible to the size and has higher space utilization than those of existing rack structure, could every useful for the storage of heterogeneous unit load sizes.

• Journal of Information Science Theory and Practice
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• 제11권1호
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• pp.79-88
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• 2023

This study aimed to develop an ontology for Thai country songs by using the seven steps of an ontology development process. Hozo-Ontology Editor software and Ontology Application Management Framework were tools used in this study. Nine classes of ontology were identified: song, singer, emotion, author, language used, language type, song style, original, and content, and it was found that the song class had a relationship with all of the other classes. The developed ontology was evaluated by seeking opinions from experts in the field of Thai country songs, who agreed that the ontology was highly effective. Additionally, the evaluation employed the knowledge retrieval concept, and the precision, recall, and overall effectiveness were measured, with a precision of 92.59%, a recall of 86.21%, and an overall effectiveness (F-measure) of 89.28%. These results indicate that the developed ontology is highly effective in describing the scope of knowledge of Thai country songs.

• 보건교육건강증진학회지
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• 제21권4호
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• pp.15-33
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• 2004

With growing significance of psychological well-being in the worksite, the purpose of this analysis was to overview the empirical studies on worksite stress management and to identity the overall effect of worksite health promotion programs on stress management through meta-analysis. Literature retrieval was conducted on-line first in MEDLINE, EBSCOhost Academic Search Premier, and PSYCHINFO databases in public health, psychology, sociology, and human resource management areas. All studies written in English and published in the peer-reviewed journals during 1990 and 2002 were recruited. Key words used in literature retrieval were 'worksite,' 'intervention,' 'program,' 'work stress,' 'strain,' 'burnout,' 'management,' 'prevention,' 'education,' and 'health promotion.' A total of 18 worksite intervention studies with 48 effect sizes were analyzed and the results were as follows. Approximately 60％ of the studies had quasi-experimental design and were conducted in manufacturing company and public sector. General psychological strains and burnout were frequently used measures of psychological stress. The lecturing and discussion typed intervention and the participatory problem-solving typed intervention were employed more than others in the studies. The average effect (r: pearson's simple correlation coefficient) weighted by sampling error was -0.14 (-0.32 to 0.05). In the conventional category of effects this is a small effect ranging from -0.59 to 0.05. Binomial effect size showed that success rates increased from 43％ without intervention to 57％ after an intervention. Sampling error explained 47.14％ of the observed variance and its effectiveness on stress management were heterogeneous. In regression analysis with suspected moderating factors affecting the worksite interventions, research design was the only significant moderating factor. The studies with quasi-experimental design had greater effects than the studies with experimental design.

• 한국비블리아학회지
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• 제25권4호
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• pp.171-185
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• 2014

본 연구는 급격히 변화하는 도서관 환경 속에서 이루어지고 있는 주제 접근 방식의 다양성을 살펴보고 국립중앙도서관의 주제명표목에 관한 분석과 평가를 통해 주제 접근의 미래에 관해 제시하였다. 먼저 주제 접근의 현황과 문제점을 살펴보고 대표적인 주제명 표목인 미의회도서관 주제명표목의 장점과 단점을 바탕으로 주제명 표목의 검색 효율성을 증진하는 방법에 관해 다루었다. 소셜북마킹, 폭소노미, 태깅, 패싯 적용, 저자부여 키워드, 시소러스, 분류표, 자동완성기능 부여로 주제 접근성을 높일 수 있는 방법으로 제안하였고 국립중앙도서관의 주제명 표목의 현황과 향후 주제 접근 활용성을 높이기 위한 방안을 제시하였다.

• 대한한방부인과학회지
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• 제35권4호
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• pp.57-76
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• 2022

Objectives: This review is aimed to figure out the effectiveness of herbal medicine for treating threatened abortion by analyzing randomized controlled trials. Methods: We searched relevant studies using seven databases including 4 domestic databases and 3 foreign databases. Data retrieval was conducted on May 18, 2022. and the papers published from January 1, 2018 to May 18, 2022 were included. The risk of bias was assessed by using Cochrane's risk of bias tool. Results: 182 studies were searched in domestic and foreign databases, and 9 studies were finally selected. Among 9 studies, the treatment group was treated with only oral herbal medicine in 4 studies and with combined treatment of herbal medicine and western medicine in 5 studies. On the other hand, the control group was treated with only western medicine. In all 9 studies, evaluation indexes in the treatment group showed more effectiveness than those of the control group, evaluation indexes were different for each study though. Conclusions: Herbal medicine was more effective for treating threatened abortion whether using it alone or combining with western medicine compared to using western medicine alone. Additional studies which include large number are needed to confirm long-term effectiveness and safety of herbal medicine treatment.

• 한국도서관정보학회지
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• 제12권
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• pp.61-96
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• 1985

The human subject analysis of a document has some critical problems. The method results in the inconsistency in analysis process and the contradiction of two objects of the subject analysis (one is the identification of the content for the retrieval of specific items and the other is to identify the content for the grouping of related materials). Since the subject analysis by mechanized has been recognized to be the possible way to aggregate the problems of manual analysis, various a n.0, pproaches of automatic indexing have been studied and experimented. This study is to examine the automatic indexing as one of the promising subject analysis techniques by statistical, syntactical and semantic a n.0, pproaches. In conclusion, the reasonable a n.0, pplication time of the automatic indexing should be made a decision based on the through investigation on the cost verse effectiveness, and automatic indexing system should be developed in the close relationship with the on-line search which is a good retrieval system for information explosion society. From now on, since the machine-readable document-text will be envisaged to be more and more available due to the rapid development of computer technology, the more substantial research on the automatic indexing will be also possible, which can bring about the increasing of practical automatic indexing systems.

• 한국정보과학회논문지:데이타베이스
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• 제36권5호
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• pp.366-373
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• 2009

이 논문은 이미지 데이터베이스를 위한 유사도 순위 매김 알고리즘을 제시한다. 이미지 검색의 문제점 중 하나가 이미지로부터 자동적으로 계산한 하위 레벨 특성과 인간 지각과의 의미 차이이며, 검색시에 이미지 유사도 측정을 위해 많은 알고리즘에서는 민코프스키 측정법($L_p$-norm)을 사용하고 있다. 그러나 민코프스키 측정법은 인간 시각 시스템의 비선형적 특성과 문맥 정보를 반영하지 못한다. 본 알고리즘에서는 인간 지각의 비선형성과 문맥 정보를 반영하는 유사도와 탐색 알고리즘을 통해 이 문제를 해결한다. 본 알고리즘을 필기체 숫자 이미지 데이터베이스에 적용하여 성능의 우수성과 효과를 증명하였다.

• 한국멀티미디어학회논문지
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• 제8권10호
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• pp.1306-1313
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• 2005

Relevance Feedback(RF)은 사용자의 인지적 피드백(perceptual feedback)을 사용하는 영상 검색 기법 중의 하나로서, 사용자 피드백을 통해 얻게 되는 적합성 정보(relevance information)를 이용하여 사용자 질의(query)를 점진적으로 구체화하게 된다. 그러나, 기존 RF 기법에서는 이러한 적합성 정보가 매우 유용한 정보임에도 불구하고, 검객이 끝나는 순간 없애버리고 만다. 그래서, 본 논문에서는 사용자의 인지적 피드백 정보를 버리지 않고, 저장하는 새로운 개념의 RF를 제안한다. 새로 제안된 RF는 시간의 흐름에 따라 축적되어 저장된 상위 레벨의 적합성 정보(high-level relevance information)를 하위 레벨의 특징벡터(low-level feature vectors)와 동적으로(dynamically) 결합하여 사용함으로써, 검색의 효율성을 크게 향상시킨다. 제안 방법의 우수성을 입증하기 위해 다양한 실험 결과도 제시한다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제2권1호
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• pp.9-14
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• 2002

Boolean retrieval is simple and elegant. However, since there is no provision for term weighting, no ranking of the answer set is generated. As a result, the size of the output might be too large or too small. Relevance feedback is the most popular query reformulation strategy. in a relevance feedback cycle, the user is presented with a list of the retrieved documents and, after examining them, marks those which are relevant. In practice, only the top 10(or 20) ranked documents need to be examined. The main idea consists of selecting important terms, or expressions, attached to the documents that have been identified as relevant by the user, and of enhancing the importance of these terms in a new query formulation. The expected effect is that the new query will be moved towards the relevant documents and away from the non-relevant ones. Local analysis techniques are interesting because they take advantage of the local context provided with the query. In this regard, they seem more appropriate than global analysis techniques. In a local strategy, the documents retrieved for a given query q are examined at query time to determine terms for query expansion. This is similar to a relevance feedback cycle but might be done without assistance from the user.

• 한국비블리아학회지
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• 제7권1호
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• pp.319-351
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• 1994

This rearch is a case study for the newspaper libraries in Seoul and the primary purpose of the this study are to investigate its document delivery capability. To achieve the above-mentioned purpose, representative rsers visited seven the newspaper library and checked their searching time. Document delivery capability was checked by units of hour, minute, second(searching time). Retrieval effectiveness was tested through the recall ratio and the precision ratio. The major findings of the study are summarized as follows： 1) Most of the newspaper libraries excellent to the document delivery capability； 6 newspaper libraries deliverived the data related subject. 2) The newspaper libraries were came out 50.1% the mean recall ratio and 84.8% the mean precision ratio about the all materials. 3) Concerned their own articles, the newspaper libraries showed 71.4% the recall ratio and 90.0% the precision ratio. That moaned their own articles were more effectived than others. 4) The Kookmin Ilbo library had the most excellent system, and the precision ratio of The Dong-A Ilbo library prior to the recall ratio. The Han Kyoreh Shinmun library had a excellent arragement in own articles, but The Segye Times library had problem in every parties.