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CONTEXT MODELING FOR SERVICE COMPOSITION IN U-LEARNING ENVIRONMENT
Hongsoo Hur,Heeyong Park,Jeongseok Kim,Kyungwon Seo,Moohun Lee,Sunghoon Cho,Bonghoi Kim,Euiin Choi 한국멀티미디어학회 2007 한국멀티미디어학회 국제학술대회 Vol.2007 No.-
With advances in the field of ubiquitous technology, education configuration has changed to personalization and customization according to context of user. It is difficult to forecast previously and prepare relevant services, because context of individual is changed any time. Therefore, if we composite and provide users to relevant services with context information of individual, we will provide more customized services. To provide these service, we have to formulate context information of individual and represent it that computer can understand. Ontology-based approaches to context modeling have been proposed. Modeled context information can acquire high-level context information from low-level context data through reasoning rule. This paper proposes a context model to standardize basic context information for service composition in u-learning environment.
유비쿼터스 컴퓨팅 환경에서 개인화서비스를 위한 컨텍스트 모델링
허홍수(Hongsoo Hur),박희용(Heeyong Park),김정석(Jungsuk Kim),서경원(Kyungwon Seo),이무훈(Moohun Lee),조성훈(Sunghoon Cho),최의인(Euiin Choi) 한국멀티미디어학회 2007 한국멀티미디어학회 학술발표논문집 Vol.2007 No.1
유비쿼터스 환경에서 개인화 서비스를 위한 기술들이 발전하고 있다. 개인화 서비스는 특정 도메인에서만 이루어지는 것이 아니라 언제 어디서나 다양한 도메인에서 서비스가 이루어지도록 해야 한다. 개인화 서비스가 이루어지기 위해서는 각각의 상황에 맞는 컨텍스트 정보를 획득하여 컴퓨터가 처리할 수 있도록 표현해 주어야 한다. 기존의 컨텍스트 모델은 특정 도메인에서만 적용할 수 있어 다양한 도메인에서 사용은 쉽지 앓다. 본 논문에서는 지식 공유와 지식 재사용을 통하여 다양한 도메인에서 사용할 수 있는 계층적 컨텍스트 모델을 제안한다.
허홍수(Hongsoo Hur),박희용(Heeyong Park),김정석(Jungsuk Kim),서경원(Kyungwon Seo),이무훈(Moohun Lee),조성훈(Sunghoon Cho),최의인(Euiin Choi) 한국정보기술학회 2007 Proceedings of KIIT Conference Vol.2007 No.-
??유비쿼터스 환경에서 상황인식은 사용자의 상황이나 의도를 파악하여 개인에게 적합한 서비스를 제공하는 개인화된 서비스를 제공하는데 연구가 이루어지고 있다. 상황인식 시스템에서 사용자가 원하는 서비스를 제공하기 위해서는 하위레벨 컨텍스트 데이터를 상위레벨 컨텍스트 정보로 변환하여야 한다. 이를 위하여 재사용과 확장성을 가진 온톨로지 기반 컨텍스트 모델에 대한 연구들이 시도되고 있다. 하지만 대부분 특정 상황만을 위한 상황 모델링 연구가 수행되고 있다. 본 논문에서는 다양한 도메인에서 사용할 수 있는 컨텍스트 모델을 제안한다. Context aware in ubiquitous environment is attaining to support the personalized service that allow individual to relevant service. In context aware system, to support services that user wants is necessary to convert high-level contextual information from low-level context data Therefore, researches for ontology based context model with reuse and extensibility have been trying. But, most researches have been trying to model for specific situation. In this paper, we present context model to use in various domains.
Predictors and outcomes of unplanned readmission to a different hospital
Kim, Hongsoo,Hung, William W.,Paik, Myunghee Cho,Ross, Joseph S.,Zhao, Zhonglin,Kim, Gi-Soo,Boockvar, Kenneth International Society for Quality in Health Care 2015 International journal for quality in health care Vol.27 No.6
<P><B>Objectives</B></P><P>To examine patient, hospital and market factors and outcomes associated with readmission to a different hospital compared with the same hospital.</P><P><B>Design</B></P><P>A population-based, secondary analysis using multilevel causal modeling.</P><P><B>Setting</B></P><P>Acute care hospitals in California in the USA.</P><P><B>Participants</B></P><P>In total, 509 775 patients aged 50 or older who were discharged alive from acute care hospitals (index hospitalizations), and 59 566 who had a rehospitalization within 30 days following their index discharge.</P><P><B>Intervention</B></P><P>No intervention.</P><P><B>Main Outcome Measures(s)</B></P><P>Thirty-day unplanned readmissions to a different hospital compared with the same hospital and also the costs and health outcomes of the readmissions.</P><P><B>Results</B></P><P>Twenty-one percent of patients with a rehospitalization had a different-hospital readmission. Compared with the same-hospital readmission group, the different-hospital readmission group was more likely to be younger, male and have a lower income. The index hospitals of the different-hospital readmission group were more likely to be smaller, for-profit hospitals, which were also more likely to be located in counties with higher competition. The different-hospital readmission group had higher odds for in-hospital death (8.1 vs. 6.7%; <I>P</I> < 0.0001) and greater readmission hospital costs ($15 671.8 vs. $14 286.4; <I>P</I> < 0.001) than the same-hospital readmission group.</P><P><B>Conclusions</B></P><P>Patient, hospital and market characteristics predicted different-hospital readmissions compared with same-hospital readmissions. Mortality and cost outcomes were worse among patients with different-hospital readmissions. Strategies for better care coordination targeting people at risk for different-hospital readmissions are necessary.</P>
김홍수 ( Hongsoo Kim ),윤난희 ( Nan-he Yoon ),이세윤 ( Seyune Lee ),( Hideki Hashimoto ) 한국보건행정학회 2020 보건행정학회지 Vol.30 No.1
Background: Few studies have examined the performance of the public long-term care insurance (LTCI) from the perspective of geographic equity. This study investigated regional variations and associated factors in the supply and utilization of nursing home care within and also between Japan and Korea. Methods: A comparative dataset was developed by extracting data from 2013-2015 LTCI statistics yearbooks and Organization for Economic Cooperation and Development regional statistics, as well as other comparable data in Japan and Korea. The unit of analysis was the prefecture in Japan and the province in Korea. We computed variation indices and conducted regression analyses for regional variations within each country and decomposition analyses to examine the variations between the countries. Results: The overall regional supply and use of nursing home care were higher in Japan, but the regional variations in Korea were larger than in Japan. In both countries, the nursing home supply was negatively associated with the proportion of older people with independent living. Nursing home use was also negatively associated with the supply of hospital beds and home care agencies in Korea; the relationship was the opposite in Japan, however. The country-based differences were more likely to be explained by differences in the distributions of the variables included in the analytical model than country-specific characteristics. Conclusion: Regional-level nursing home supply and use were unequal in both countries, and the contributing factors were not the same. Policy efforts are needed to advance regional equality in long-term care (LTC) and collaboration between health and LTC institutions for frail older people, especially in Korea.