• 한국IT서비스학회:학술대회논문집
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• 2010.05a
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• pp.469-474
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• 2010

본 연구에서는 보건기관이 효율적으로 고혈압 관리 대상자를 탐색하고, 고혈압 관련 요인에 대한 지식을 효과적으로 관리할 수 있도록 하는 고혈압 고위험군 추정 모형 및 우선 사업 대상자 탐색 모형을 제안한다. 특히, 대용량 데이터 처리 및 실시간 시스템 운영, 외부 환경 변화를 고려한 자동 학습과 같은 현실적인 제약 조건을 해결하는 모형을 개발하는 것을 주 목표로 한다. 지역 보건소에서 수집된 의료 데이터를 이용하여 최적의 파라미터 값을 설정한 고혈압 고위험군 탐색 모형을 도출하였으며, 모형의 검증을 위하여 고혈압 환자정보로 구성된 평가용 데이터를 사용하여 고혈압 자연 발병률 대비 약 2배 수준으로 향상된 고혈압 환자 예측 정확도가 얻어지는 것을 확인하였다. 시스템 운영과 유비보수 측면에서 현실적으로 중요한 문제인 대용량 데이터 처리 및 외부 환경 변화에 강인한 자동학습 이슈를 해결하기 위한 방안에 대해서도 설명하였다.

• Proceedings of the KIEE Conference
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• 1998.07c
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• pp.1200-1202
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• 1998

전력 사업자들은 일반 수용가에 대한 공급 신뢰도를 개선하기 위해서 배전 자동화 시스템을 도입, 실시간 고장구간 탐색 및 계통 재구성을 추진하고 있다. 그러나. 고장 감지기 자체의 오동작이나 통신상의 오류, 다중사고의 가능성 등 불확실성을 포함하고 있기 때문에 비상시 사고구간 추정에 많은 노력과 시간비용이 요구될 수 있다. 따라서. 본 연구에서는 확률론과 휴리스틱 탐색법을 이용하여 배전자동화 시스템에 수집된 정보가 불확실성을 포함하는 경우에도 신속하게 사고 예비 후보 지역을 제시함으로써 고장구간 추정시간을 최소화 할 수 있는 전문가 시스템이 개발된다.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.374-377
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• 2004

동영상 강의는 시간이나 장소 등에 크게 구애받지 않고 인터넷을 통하여 쉽게 이용할 수 있는 간편한 학습방법중의 하나이다. 그러나 학습자의 학습자세와 태도에 따라 학습효과는 매우 다를 수 있는 문제점을 가지고 있다. 본 논문에서는 입력영상으로부터 학습자의 얼굴정보를 입력받아 주기적으로 탐색하여 학습자의 강의에 대한 집중도와 충실도를 평가하는 시스템을 제안하고자 하였다. 먼저 입력영상의 분할된 중심영역으로부터 학습자의 얼굴을 포함하는 신체정보를 입력받아 사용하였으며, 빠르고 효율적인 얼굴영역의 추출을 위하여 피부색상(skin-color)정보와 얼굴의 지역적 특성을 이용하는 방법을 사용하였다. 또한 주기적으로 입력되는 영상의 빠른 얼굴추적을 위하여 설정된 영역들로부터 구성되는 블록들의 위치와 구성정보를 이용한 블록탐색 기법을 사용하였다.

• 지역과문화
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• v.6 no.1
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• pp.1-27
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• 2019

The study explores the way how sharing economy services of accommodation and car rental, one of social issues actively discussed today are settled in the process of sharing economy building in local destinations. The result shows that average consumers expressed their favorable attitude toward the sharing economy services. However, the consumer's attitude didn't directly affect the consumer's positive perception that there is need for local sharing economy service network and the educational system for local residents and the network helps the economy. Instead consumer's knowledge of sharing economy services and their eagerness to learn the knowledge as parameters related the consumer's attitude to their perceptions; the consumer's attitude affected indirectly their perceptions. The study shows that local communities and their residents' efforts are not enough simply to activate the sharing economy services in the development process of tourist resources, while it asks consumers to learn information and knowledge of the sharing economy. Therefore, consumers and residents should interact and communicate closely with each other to help the development of local destinations and tourist resources based on sharing economy.

• Journal of the Korean Society for Library and Information Science
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• v.46 no.1
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• pp.99-117
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• 2012

Due to the recent technological improvements, the environments of e-books and its contents have been changed and the users of e-books have drastically increased. This study aimed to propose a model on how children access and search e-books in this digital era. For this study, a potential model was proposed based on the analyses on various information-seeking behavior models. For analyzing children's access and search processes on e-books, 30 children in five public libraries or school media centers in Seoul and Kyoungi-do areas were recruited for the in-depth interviews. As a potential model on children's access and search on e-books was re-visited and revised based on the results, a cyclic model of children's access and search on e-books was proposed containing six factors.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.43 no.6 s.312
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• pp.57-64
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• 2006

Motion estimation plays an important role for the compression of video signals. The proposed method utilizes an adaptive threshold and characteristics of a distribution of SAD (sum of absolute difference). Generally, the more complex the SAD distribution is, the larger SAD value tends to be. This proposed algorithm tries to reduce the search points in a simple distribution but increase them in a complex distribution to avoid local minima. A macro block is divided into 9 areas. One of them chosen using spatio-temporal correlation is called the primary area and the others are called the secondary area that will be searched to avoid local minima. The proposed algorithm decides if just one area (the primary area or the secondary area) will be enough to be searched or both areas should be searched, using adaptive threshold. Compared with famous motion estimation algorithms, the simulation result shows that the searching points per macro block and MSE decreases about 16.4% and 32.83 respectively on the average.

• Journal of the Korea Convergence Society
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• v.8 no.6
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• pp.97-107
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• 2017

The purpose of this study was to investigate information source of the choice of select dental medical institution and the relationship between socioeconomic characteristics and information searching pattern. This study was conducted for residents adults and teens living in Gwangju and rural communities of Jellanam-do province including. The study shows that 61.0 % of the information of selecting dental medical institutes had been introduced by the acquaintance and the rest of the information(37.0%) had been gotten from the internet. The purpose of this study is to develop an information search method that can influence the choice of medical consumers in dental clinics, and to establish a new dental clinic management strategy based on this research. Plus, we want to develop an information search source that can have a convergence effect on the selection of medical consumers in dental medical institutions.

• Korean Security Journal
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• no.51
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• pp.39-58
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• 2017

The purpose of this study is to verify the validation of the Korean-type destructive leadership scale in order to activate the leadership research of local police manager in Korea. For the purpose of this study, the entire police officer(under the rank of sergeant) working at the Gyeongnam Provincial Police Agency in 2017 was set up as the population. A proportional allocation sampling was used for the sampling, and the allocation standard was set up in the workplace, department, rank, and sex. Data collection was conducted from April 1, 2017 to April 30, 2017, for a total of 500 respondents, and 433 were finally used for actual analysis. In the study, reliability and validity of destructive leadership scale were verified through reliability analysis, exploratory factor analysis, and confirmatory factor analysis. As a result, the destructive leadership scale of Korean local police manager showed a high cronbach' ${\alpha}$ coefficient of 0.948 for the questionnaire related load and 0.974 in the questionnaire related organization, but, the model fit of confirmatory factor analysis was low. Therefore, through additional exploratory factor analysis and confirmatory factor analysis, we reconstructed 6 questionnaires by deleting 4 questionnaires among the load-related items. On the other hand, the organization-related items were verified to be appropriate for all of the existing 10 items, and the destructive leadership scale of Korean local police manager was finally reconstructed into 16 items with 2 factors. This study also confirmed that the above reconstruction model is statistically suitable. The destructive leadership scale of Korean local police manager can be used as the basic data of leadership research to be conducted in the future.

• Journal of agricultural medicine and community health
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• v.40 no.2
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• pp.80-92
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• 2015

Objectives: To clarify the association between dust from large construction sites and allergic and respiratory conditions among residents in Sejong city. Methods: We included 379 individuals older than 50 years from three areas of Sejong city; two areas near construction sites and one area for a comparison. Prevalence of self-reported allergic and respiratory conditions was compared across the three areas using logistic regression to adjust for covariates including age, gender, smoking, and educational attainment. A total of 16 individuals were interviewed to take details of the residents' experiences of construction work. Results: Those living in the nearby areas around construction sites were generally found to have the increased prevalence for all allergic and respiratory conditions. Odds Ratio(OR)s for cough and sneezing among the six symptoms and allergic rhinitis among the three diagnosed diseases reached statistical significance but only OR for cough remained significant after adjustment: adjusted OR for cough was 2.63 (95% CI, 1.07-6.46). Two relevant themes emerged from semi-structured interview were; 1) most residents from the affected area reported a considerable level of exposure to construction dust, 2) about half of them noted that construction dust influences allergic- and respiratory health. Conclusions: General pattern provides suggestive evidence that living close to construction sites may be positively associated with elevated risks of allergic and respiratory conditions. Efforts should be made to establish preventive measures and a comprehensive in-depth health impact assessment on this issue.

• Land and Housing Review
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• v.7 no.2
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• pp.103-111
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• 2016

The paradigm of the housing policy has been transformed from housing supply to housing welfare, from the policy of housing quantity expansion to the policy of customized housing welfare. The Housing Act was newly enacted to realize the new paradigm of the housing policy. The Act establishes the role of the Housing Welfare Centers in the housing welfare delivery system, but they have some difficulties in doing their role because of limited amount of centers and their manpower. The desirable and efficient model of housing welfare delivery system, therefore, is that the demand of housing welfare is discovered on local base, and that demanders can be provided housing welfare service connected to local governments or neighborhood housing welfare centers. To do so local communities should be established and activated, and the needs of housing welfare service also be discovered. This study is a exploratory one on communities' role in housing welfare delivery system in spite of some limitations based on existing theories and studies, and is significant as a new trial.