• Journal of Computing Science and Engineering
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• 제3권3호
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• pp.165-180
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• 2009

The HKIB, or Hankookilbo, test collections are two archives of Korean newswire stories manually categorized with semi-hierarchical or hierarchical category taxonomies. The base newswire stories were made available by the Hankook Ilbo (The Korea Daily) for research purposes. At first, Chungnam National University and KISTI collaborated to manually tag 40,075 news stories with categories by semi-hierarchical and balanced three-level classification scheme, where each news story has only one level-3 category (single-labeling). We refer to this original data set as HKIB-40075 test collection. And then Yonsei University and KISTI collaborated to select 20,000 newswire stories from the HKIB-40075 test collection, to rearrange the classification scheme to be fully hierarchical but unbalanced, and to assign one or more categories to each news story (multi-labeling). We refer to this modified data set as HKIB-20000 test collection. We benchmark a k-NN categorization algorithm both on HKIB-20000 and on HKIB-40075, illustrating properties of the collections, providing baseline results for future studies, and suggesting new directions for further research on Korean text categorization problem.

• 청정기술
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• 제15권3호
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• pp.224-230
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• 2009

본 연구에서는 유리병 재사용에 대한 환경영향을 알아보기 위하여 전과정평가를 수행하였다. 연구범위로는 제품제조 및 원료수송 단계로 한정지었으며 360 mL 유리병 한 개를 기능단위로 사용하였다. 고려된 환경영향 범주는 6개로 자원고갈, 산성화, 부영양화, 지구온난화, 오존층파괴 및 광화학산화물 생성 등이었다. 전과정평과 결과, 자원고갈이 48.63%, 지구온난화가 46.27%로 두 범주가 가장 큰 환경영향을 보였으며 나머지 범주들은 상대적으로 미미한 영향을 보였다. 전체 공정 중 신병제조공정에 사용되는 화학약품에 의한 환경영향이 71.24%로서 주요인으로 나타났고 전력사용은 16.74%, 수송은 11.8%로 다음을 차지하고 있다. 또한 신병제조공정에 투입되는 화학약품 중 규산나트륨에 의한 환경영향이 45.68%를 차지하고 있어 자원고갈 및 지구온난화에 대한 기여도가 가장 큰 것으로 보인다.

• 한국간호교육학회지
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• 제12권1호
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• pp.21-27
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• 2006

Purpose: This is a descriptive study to identify the relationship of quality of life and learning style of the elderly. Method: 106 elderly persons living in Seoul were surveyed using a questionnaire to identify their demographic characteristics, learning styles, and perceived quality of life. Results: 17% of the respondents were in the low quality of life (QOL). The QOL showed significantly different according to learning styles, gender, current health status, perceived level of current life happiness, and monthly pocket money. The highest average score of QOL was found in the Assimilator group, and the lowest average score was found in the Diverger group. Conclusions: Among the four categories significantly related to QOL, the case of learning style and current health status are the categories by which nurses can intervene to improve QOL. Thus, nurses should emphasize the relationship to improve the clients' QOL. Since the scores of QOL were high for the Assimilator and Accomodator groups, nurse should identify the learning style of the elderly as soon as possible and then help those who are under-developed, to further develop Assimilator and Accomodator learning styles.

• 한국실내디자인학회논문집
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• 제24권1호
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• pp.124-132
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• 2015

This study investigated the complex meanings of the concept of place and their periodical changes in the Korean architectural discourse. For that, the study surveyed almost every articles in majour 3 Korean architectural magazines during around 1990s, when the Korean architects and theorists concerned the 'place' as an alternative of the modernists' 'space'. 60 selected articles were organized in a table in a chronological order together with their keywords and category codes. The 8 categories reflecting 8 issues of 'place' were suggested in the study after the analysis of selected articles' contents. The categories were structured by two axes which were 4-grade scale axis influences by C. Norberg-Schultz' approach, and 'architecture-human' axis following the 'structure-action' division by A. Giddens. After the analysis of the diachronic and synchronic tables, the study tried to establish a structure model of the concept of place in Korean architectural context, which consisted of architectural terms such as environment, social system, context, identity, landscape, community, Materiality, and residence. This final result could be useful for both architects and theorists who might try to apply the idea of 'place' without erstwhile confusion on their design or research by examining the detailed contents of the concept.

• Industrial Engineering and Management Systems
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• 제11권4호
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• pp.346-352
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• 2012

While systems engineering has been widely applied to complex system development, some evidences are reported about major budget and schedule overruns in systems engineering applied. On the other hand, many organizations have been deploying Design for Six Sigma (DFSS) to build Six Sigma momentums in the area of design and development for their products and processes. To explore the possibility of having a DFSS complement systems engineering process, this process reviews the systems engineering with their categories of effort and DFSS with its methodologies. A comparison of the systems engineering process and DFSS indicates that DFSS can be a complement to systems engineering for delivering higher quality products to customers faster at a lower cost. We suggest a simplified framework of systems engineering process, that is, PADOV which was derived from the generic systems engineering process which has been applied to the development of T-50 advanced supersonic trainer aircraft by Korea Aerospace Industries (KAI) with technical assistance of Lockheed Martin. We demonstrated that each phase of PADOV framework is comprehensively matched to the pertinent categories of systems engineering effort from various standards.

• 한국물환경학회지
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• 제26권4호
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• pp.598-607
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• 2010

One of constraints in the application of unit-load method to estimate non-point pollution loads in the total water pollutant load management system (TWPLMS) is the limited numbers of applicable unit-loads. Since only 7 unit-loads are currently available for total 28 land-use categories in the national land register data, each unit-loads inevitably have to represent several land-use categories regardless of their actual land coverage characteristics. As a way to minimize the problem, this study suggested a nested application of the available unit-loads based on the analysis of high resolution aerial images taken in the Kyeongan watershed. Statistical analysis of three selected land-use categories such as school, apartment complex, and golf course showed that there exit significant (95% confidence level) relationships between the registered land-uses and actual land coverages. The school and apartment complex currently considered as 100% ground have only 65% and 80% of ground characteristics, respectively. Golf course, which is considered as 100% pasture, has about 5% of ground area. This indicates that the unit-load method using in TWPLMS can give over estimated non-point pollutant loads for the school and apartment complex (19.8~54.4%) but under estimation for the golf course (80.9%).

• 성인간호학회지
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• 제22권4호
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• pp.408-417
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• 2010

Purpose: The purpose of this study was to describe public health services for the aged in public health centers from the perspective of public health nurses. Methods: The interview data were collected from 11 public health nurses and analyzed by using Colazzi's (1978) descriptive phenomenology. The procedural steps was that described the phenomenon of interest, collected participants' descriptions of the phenomenon, extracted the meaning of significant statement, organized the meanings into theme clusters, wrote exhaustive descriptions and then incorporated data into an exhaustive description. Results: The results included 291 re-statements, 49 constructed meanings, 27 themes, 12 theme clusters, and 5 categories were deduced. The five categories were 'perception of obstacles for elderly health system', 'sense of burden in services of health', 'planning about diverse elderly health services', 'elderly clients-focused performance', and 'solidify community ground of elderly health services'. Despite obstacles, participants tried to diverse health services for elderly. Conclusion: This study has described public health nurses' experiences about public health services for the aged. These findings have important implication for the practice of public health services for the aged and must be considered to develop program for planning and practice of public health nurses for the aged.

• 지능정보연구
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• 제6권2호
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• pp.63-76
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• 2000

Research on group decisions and electroinc meeting systems have been increasing rapidly according to the widespread of Internet technology. Although various issues have been raised in empirical research, we will try to solve an issue on idea categorizing in the group decision making process of elecronic meeting systems. Idea categorizing used at existing group decision support systems was performed in a top-down procedure and mostly participants\` by manual work. This resulted in tacking as long in idea categorizing as it does for idea generating, clustering an idea in multiple categories, and identifying almost similar redundant categories. However such methods have critical limitation in the electronic meeting systems, we suggest an intelligent idea categorizing methodology which is a bottom-up approach. This method consists of steps to present idea using keywords, identifying keywords\` affinity, computing similarity among ideas, and clustering ideas. This methodology allows participants to interact iteratively for clear manifestation of ambiguous ideas. We also developed a prototype system, IIC (intelligent idea categorizer) and evaluated its performance using the comparision experimetn with other systems. IIC is not a general purposed system, but it produces a good result in a given specific domain.

• 대한환경공학회지
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• 제36권3호
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• pp.162-171
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• 2014

본 연구에서는 수질오염총량제의 토지계 발생부하량 산정 방식에서의 지목 단순화로 인한 불확실성을 분석하고, 23 개 중분류 토지피복도를 기존 산정방식에 적용하여 지목 확장을 할 수 있도록 개선하였으며 이를 L-THIA 모형을 이용하여 검증하였다. 진위천 유역에 대하여 지목이 단순화된 기존 방식(시나리오 1)과 23개 중분류 토지피복도를 이용한 방식(시나리 오 2)으로 산정된 TP 부하량을 비교한 결과 기존 방식의 불확실성이 높다는 것이 나타났으며, 시나리오 2에 의한 분석 결과 같은 대지 분류에 속하는 토지피복들에서 T-P 발생부하량의 편차가 3.45 kg/day~56.69 kg/day로 약 16배의 차이를 보였다. 시 나리오 2를 수질오염총량제에 적용할 수 있도록 23개 중분류 토지피복을 지적도 기반 지목으로 매칭하여 TP 발생부하량을 산정하였다(시나리오 3). 개선된 방식(시나리오 3)의 토지계 T-P 발생부하량 산정의 정확도를 검증하기 위해 L-THIA 모형의 결과와 비교하였으며 모형 예측 대비 약 10% 정도로 차이가 매우 적게 나타났다. 본 연구결과는 향후 수질오염총량제의 토 지계 발생부하량 산정의 정확도를 높이는데 있어 기초자료로 사용될 수 있을 것이라 기대된다.

• 한국환경보건학회지
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• 제39권6호
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• pp.492-504
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• 2013

Objectives: This analysis seeks to evaluate the impact of environmental health factors (EHF; e.g. hospital beds per capita, employees of medical institutions) on extreme-heat vulnerability assessment in Busan Metropolitan City during 2006-2010. Methods: According to the vulnerability concept suggested by the Intergovernmental Panel on Climate Change (IPCC), extreme-heat vulnerability is comprised of the categories of Exposure, Sensitivity, and Adaptive Capacity (including EHF). The indexes of the Exposure and Sensitivity categories indicate positive effects, while the Adaptive capacity index indicates a negative effect on extreme-heat vulnerability. Variables of each category were standardized by the re-scaling method, and then each regional relative vulnerability was computed with the vulnerability index calculation formula. Results: The extreme-heat vulnerability index (EVI) excepting EHF was much higher in urban areas than in suburban areas within the metropolitan area. When EHF was considered, the difference in the EVI between the two areas was reduced due to the increase of the Adaptive capacity index in urban areas. The low EVI in suburban areas was induced by a dominant effect of natural environmental factors (e.g. green area) within the Adaptive capacity category. Conclusions: To reduce the vulnerability to extreme heat in urban areas, which were more frequently exposed to extreme heat than others areas, public health and natural environments need to be improved in sensitive areas.