다이아그리드 구조 시스템의 내진성능계수 평가

김경환,주영규,김상대,Kim, Kyoung-Hwan,Ju, Young-Kyu,Kim, Sang-Dae 한국강구조학회 2010 한국강구조학회 논문집 Vol.22 No.3

새롭게 제안된 다이아그리드 구조 시스템은 경사진 기둥을 통해 구조물의 중력하중과 횡력을 모두 저항하는 시스템이다. 하지만 현재 내진설계 기준은 새로운 구조시스템에 대한 적절한 반응수정계수가 없다. 이에 새로운 시스템의 반응수정계수를 포함한 내진설계시 고려되는 내진성능계수들을 산정하기 위해 ATC-63(안)이 새롭게 제안되었다. ATC-63(안)에서는 구조 시스템의 여러 변수에 의해 다른 값을 가지게 되는 반응수정계수를 보완하기 위해 붕괴여유비를 함께 고려하여 건물의 내진성능을 판단한다. 본 논문에서는 4층에서 36층의 서로 다른 높이의 대각가 새 구조물을 설계하여 ATC-63(안)의 방법론에 따라 비선형정적해석과 동적해석을 통해 대각가새 구조의 내진성능계수를 평가하였다. As a new structural system, the diagrid system resists both gravity and lateral loads with diagonal columns. In current seismic design provisions, however, the response modification factor for a new structural system is not provided yet. ATC-63 provides a new methodology for defining various seismic performance factors, including the response modification factor. ATC-63 includes the collapse margin ratio in modifying the response modification factor, which can vary with many structural systems. In this paper, a non-linear static analysis and a dynamic analysis were conducted for four different diagrid models with 4-to 36-story heights. From these analyses, the response modification factor of the diagrid system was evaluated.

기업다변화와 인수 후 통합

김경환 ( Kyoung Hwan Kim ) 경기대학교 관광종합연구소 2001 여가관광연구 Vol.5 No.-

에이전트기반 개방병원 간호기록시스템 설계에 관한 연구

김경환(Kim Kyoung-Hwan) 한국지능정보시스템학회 2010 지능정보연구 Vol.16 No.2

The attending system is a medical system that allows doctors in clinics to use the extra equipment in hospitals-beds, laboratory, operating room, etc-for their patient’s care under a contract between the doctors and hospitals. Therefore, the system is very beneficial in terms of the efficiency of the usage of medical resources. However, it is necessary to develop a strong support system to strengthen its weaknesses and supplement its merits. If doctors use hospital beds under the attending system of hospitals, they would be able to check a patient’s condition often and provide them with nursing care services. However, the current attending system lacks delivery and assistance support. Thus, for the successful performance of the attending system, a networking system should be developed to facilitate communication between the doctors and nurses. In particular, the nursing records in the attending system could help doctors monitor the patient’s condition and provision of nursing care services. A nursing record is the formal documentation associated with nursing care. It is merely a data repository that helps nurses to track their activities; nursing records thus represent a resource of primary information that can be reused. In order to maximize their usefulness, nursing records have been introduced as part of computerized patient records. However, nursing records are internal data that are not disclosed by hospitals. Moreover, the lack of standardization of the record list makes it difficult to share nursing records. Under the attending system, nurses would want to minimize the amount of effort they have to put in for the maintenance of additional records. Hence, they would try to maintain the current level of nursing records in the form of record lists and record attributes, while doctors would require more detailed and real-time information about their patients in order to monitor their condition. Therefore, this study developed a system for assisting in the maintenance and sharing of the nursing records under the attending system. In contrast to previous research on the functionality of computer-based nursing records, we have emphasized the practical usefulness of nursing records from the viewpoint of the actual imp lementation of the attending system. We suggested that nurses could design a nursing record dictionary for their convenience, and that doctors and nurses could confirm the definitions that they looked up in the dictionary through negotiations with intelligent agents. Such an agent-based system could facilitate networking among medical institutes. Multi-agent systems are a widely accepted paradigm for the distribution and sharing of computation workloads in the scientific community. Agent-based systems have been developed with differences in functional cooperation, coordination, and negotiation. To increase such communication, a framework for a multi-agent based system is proposed in this study. The agent-based approach is useful for developing a system that promotes trade-offs between transactions involving multiple attributes. A brief summary of our contributions follows. First, we propose an efficient and accurate utility representation and acquisition mechanism based on a preference scale while minimizing user interactions with the agent. Trade-offs between various transaction attributes can also be easily computed. Second, by providing a multi-attribute negotiation framework based on the attribute utility evaluation mechanism, we allow both the doctors in charge and nurses to negotiate over various transaction attributes in the nursing record lists that are defined by the latter. Third, we have designed the architecture of the nursing record management server and a system of agents that provides support to the doctors and nurses with regard to the framework and mechanisms proposed above. A formal protocol has also been developed to create and control the communication required for

다속성 효용이론을 활용한 중국시장에서의 인터넷 의료정보 서비스 선호속성 분석

김경환(Kyoung Hwan Kim),장영일(Young Il Chang) 한국데이타베이스학회 2009 Journal of information technology applications & m Vol.16 No.4

This study investigated consumer preferences for Internet medical information service in China using the multi-attribute utility theory. The multi-attribute utility theory is a compositional approach for modeling consumer preferences wherein researchers calculate the overall service utility by summing up the evaluation results for each attribute. We found that Chinese Internet medical information users consider the availability of information and quick response to be the most important attributes. Further, they think that the comment feature is less important as compared to other attributes such as costs and updates. In addition, we found that the Internet users having more Internet experience consider these attributes to be more important as compared to the people who are just beginning to surf the Internet. For any successful Internet business, Internet marketers should assess individual-level preference and accordingly organize a fresh campaign. As of now, Internet marketers need estimation methods to predict the market performance of new services in many different business environments. We believe that the multi-attribute utility theory is a useful approach in this regard.

한식당의 테이크아웃 음식 선택속성이 신뢰와 고객만족에 미치는 영향

김경환(Kyoung-Hwan Kim),유영진(Young-Jin Yoo) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.9

본 연구의 목적은 한식당의 테이크아웃 음식 선택속성이 신뢰와 고객만족에 미치는 영향을 분석하고, 추가적으로 신뢰의 매개역할에 대하여 분석하는 것이다. 수집된 자료는 SPSS 22.0과 AMOS 22.0 프로그램을 이용하여 빈도분석, 요인분석, 신뢰도분석, 상관관계분석, 공분산 구조분석을 실시하였다. 본 연구의 실증분석에 따른 결과를 요약하면 다음과 같다. 첫째, 선택속성은 안전성, 편의성, 음식의 품질, 경제성 요인으로 분류되었다. 선택속성의 안전성, 편의성, 음식의 품질, 경제성 요인 모두 신뢰에 유의한 영향을 미치는 것으로 나타났다. 둘째, 선택속성의 안전성, 편의성, 음식의 품질, 경제성 요인 모두 고객만족에 유의한 영향을 미치는 것으로 나타났다. 셋째, 신뢰는 고객만족에 유의한 영향을 미치는 것으로 나타났다. 넷째, 신뢰는 선택속성과 고객만족 사이에서 매개효과가 있는 것으로 나타났다. 본 연구는 연구결과를 통하여 선택속성, 신뢰 및 고객만족을 향상시킬 수 있는 전략적 시사점을 제시하였다. The purpose of this study is to examine the effect of take-out food selection attributes of Korean restaurant on trust and customer satisfaction and to analyse the mediating effects of trust. Collected data were statistically analyzed by frequency analysis, factor analysis, reliability analysis, correlation analysis and covariance structure analysis using SPSS 22.0 and AMOS 22.0. The results of this study are as follows: First, selection attributes consists of safety, convenience, quality of food and economics. Among selection attributes, safety, convenience, quality of food and economics had a significant influence on trust. Second, among selection attributes, safety, convenience, quality of food and economics had a significant influence on customer satisfaction. Third, trust had a significant influence on customer satisfaction. Fourth, trust had a mediating effect between selection attributes and customer satisfaction. The conclusion section suggested strategic implications to induce selection attributes, trust and customer satisfaction based on the findings.

CFB-CVD법으로 제조된 TiO₂ 광촉매 비드를 이용한 포름알데히드의 분해

김경환(Kyoung Hwan Kim),김유봉(Yu Bong Kim),이승용(Seung Young Lee),박재현(Jae Hyeon Park),임진영(Jin Young Lim),정상철(Sang Chul Jung) 大韓環境工學會 2008 대한환경공학회지 Vol.30 No.7

에이전트를 활용한 응급의료지도 지원시스템 설계에 관한 연구

김경환 ( Kyoung Hwan Kim ) 한국정보시스템학회 2010 정보시스템연구 Vol.19 No.3

Emergency Medical Service(EMS) requires a system that supports the communication between emergency medical technicians (EMT)s and the doctor in the emergency department. Because the rapid triage and on-site treatment of patients need doctor`s medical advice. However, a system to assist the doctor assign for medical advice does not exist in Korea. This paper suggests a medical advice support system that focuses on appropriate doctor assign and real-time communication among the ambulance, the Emergency Medical Information Center (EMIC), and the doctor using an agent system. We expect that the system can help to solve the problems affecting prehospital EMS and improve its general quality.

주천강 요선정 포트홀에 관한 연구

김경환 ( Kyoung Hwan Kim ),권동희 ( Dong Hi Kwon ) 한국사진지리학회 2012 한국사진지리학회지 Vol.22 No.4

This report investigates Potholes which is the major erosional forms in bedrock channels caused by fluvial erosion. Pothole is so called because it is a hole which looks like coffeepot. It was based on the analysis of previous studies, the results apply to the outdoor survey research area of ``Porthole YoSeonJeong``. Especially, this paper produces the results of the distribution and characteristic of pothole by using flat surface distribution, positioning, and cross-sectional distribution and positioning, focusing on the changes and forms of pothole basement rock. The followings are the summary of the results of distribution and characteristic of YoSeonJeong potholes. As a result of classifying pothole. It is more prone to appear potholes which has a complete form, if river`s influence is continues. However in the study area like upstream which has a strong influence of the flow, it was found that the decline stage of the potholes more will be formed.

PIFuHD 기반의 실사진 3D 모델 생성을 활용한 실감형 AR 메타버스 플랫폼 개발

김경환(Kyoung Hwan Kim),김세중(Se Jung Kim),김다솔(Da Sol Kim),김재호(Jae Ho Kim) 한국통신학회 2024 한국통신학회 학술대회논문집 Vol.2024 No.6

춘천시 푸드테크 산업 육성 및 협력방안

김경환(Kyoung-Hwan Kim) 대한지리학회 2024 대한지리학회 학술대회논문집 Vol.2024 No.6