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한국레크리에이션 활동의 활성화방안에 관한 연구 : Camp 활동을 중심으로 with emphasis on the camp aetivity
오충식 한국관광산업학회 1990 Tourism Research Vol.4 No.1
As the community develops leisure time is on the increase. The increase of leisure time, and the change of value view due to the social development have brought about the change of the people's recreation activities. That is, recreation activities are recognized a means to solve various social problems. Especially, demand of outdoor recreation activities grows longer every year in Korea. In the light of these conditions, this study lies in presenting the activation plans of camp activity. The major contents of activation plan for camp activity are as follows. 1st, To produce the camp environment which is fitted campers' disposition in Korea. 2nd, To carry out education of camping from the elementary school to the university, and to develop rational program for camp activities. 3rd, To develop the course for campers who have private automobiles. 4th, To make natural grass grounds and to expand facilities and diffusion of play. 5th, To make rational plans and to try to develop $quot;The Green Belt$quot; into camp-grounds. 6th, To introduce 'the third sector' method in order to develop, efficiently, camp-grounds.
오충식,Hong Seung Wan,Park Sarah,Kwon Yubi,김성협 대한마취통증의학회 2022 Korean Journal of Anesthesiology Vol.75 No.6
Background: Numerous studies suggest that intravenous propofol is superior to inhaled volatile anesthetic. This study compared the changes in the endoplasmic reticulum (ER) stress of cancer cells and lymphocytes after propofol- and sevoflurane-based anesthesia during breast cancer surgery. Methods: We randomized 53 patients undergoing breast cancer surgery to propofol (n = 28) and sevoflurane (n = 25) anesthesia groups. Blood samples were obtained immediately before inducing anesthesia, and 1 and 24 h postoperatively. Human breast cancer cell lines were cultured and treated with patient plasma, and the frequency of C/EBP homologous protein (CHOP) on the cancer cell lines and lymphocytes was measured. The neutrophil-to-lymphocyte ratio in plasma was evaluated in both groups. Results: The CHOP expression on breast cancer cell lines did not differ between the groups (P = 0.108), although it decreased significantly over time (P = 0.027). The CHOP expression on lymphocytes was comparable between the groups (P = 0.485), and was the neutrophil-to-lymphocyte ratio (P = 0.501). Conclusions: Propofol-based anesthesia did not induce greater ER stress than sevoflurane-based anesthesia during breast cancer surgery. The ER stress of cancer cells did not differ according to the type of anesthesia during breast cancer surgery.
오충식,Park Jun Young,Kim Seong-Hyop 대한마취통증의학회 2024 Korean Journal of Anesthesiology Vol.77 No.3
Background: Telmisartan is considered more potent than valsartan. Hemodynamic response during anesthesia induction may be influenced by anti-hypertension (HTN) medication. The present study compared the effect of anti-HTN medications on post-induction hypotension during noncardiac surgeries.Methods: This observational study standardized the anesthetic regimen across patients, with hypotension defined as mean blood pressure (BP) of less than 65 mmHg. The hemodynamic changes within 5 min before and after endotracheal intubation, and within 10 min before and after surgical incision were measured. Transthoracic echocardiographic evaluation of the left ventricle (LV) during anesthesia induction was performed. The primary endpoint was the decline in mean BP after anesthetic administration in telmisartan and valsartan groups. Multivariate logistic regression analysis was used to identify predictors of post-induction hypotension.Results: Data from 157 patients undergoing noncardiac surgery were analyzed. No significant differences were found in mean BP decline between the two groups during anesthesia induction. Hemodynamic changes and LV ejection fraction (EF) during anesthesia induction were similar between the groups. Age and preoperative initial mean BP in operation room (OR) were associated with post-induction hypotension in both groups.Conclusions: The angiotensin receptor blocker (ARB) type did not influence post-induction hypotension during anesthesia induction. Age and preoperative initial mean BP in OR were associated with post-induction hypotension in patients taking ARBs.
여학생의 여가활동실태와 개선방안에 관한 연구 : 대전시 중 고등학생을 중심으로
오충식 한국관광산업학회 1991 Tourism Research Vol.5 No.1
The purpose of this paper is to survey the consciousness and actual condition of the leisure activities for girl students some productive ideas for the improvement plans of the leisure activities. The major contents of the improvement plans for the leisure activities are as follows. 1. The students must have a lot of leisure times through the abolition of supplementary lessons and self control learning. 2. The students should have many times for the club-activities in order to experience in leisure activities. 3. The students must be educated for the method of leisure activities and technical acquirement through every school. and social groups. 4. The healthy and productive leisure activities need for the teenagers. 5. The leisure education must be intensify through many schools, social groups and mass communication. 6. The development and diffusion of healthy group play need to increase in the number of the people in leisure activities.
SEED를 이용한 Web 기반 클러스터시스템 어카운팅 설계
오충식(Oh Chung-Shick) 한국콘텐츠학회 2003 한국콘텐츠학회 종합학술대회 논문집 Vol.1 No.2
컴퓨팅 환경의 고도화와 인터넷 사용자의 급증으로 인해 현재의 Web기반 클러스터 시스템 어카운팅 서비스는 과거에 비해 다수의 사용자로 하여금 보다 많은 양의 데이터를 고속으로 접근할 수 있게 하고 있다. 하지만 시스템 환경의 편리함 만큼이나 사용자 정보와 데이터의 보안 역시 중요한 요소 중 하나이며 특히 데이터 유출, 해킹 그리고 악의적인 코드 등으로 인한 개인과 기관의 피해는 인터넷 서비스 사업 분야에 있어 매우 중요한 문제로 대두되고 있다. 본 연구에서는 국내 TTA(한국정보통신기술협회) 표준 암호 알고리즘인 SEED를 이용한 보다 안정적인 웹기반 클러스터시스템 어카운팅 서비스 방안을 제안한다. Both the highly developed computing environment and the rapid increase of the internet users enable the present web based cluster system accounting service to help many users access to numerous data at high speed. However, the information security of users and data is also as important as the convenience of the systematic environment. Especially, the significance of damage to the individuals and organizations resulted from the data outflow, hacking and malicious coding has risen up to one of the most essential problems in the internet service business. In this study, I suggest a more safe web based cluster system accounting service solution applying SEED, the Korean Telecommunications Technology Association (TTA) standard encryption algorithm.
클러스터 기반 무선 센서 네트워크에서 효율적인 클러스터 헤드 재선출 기법
오충식(Chung-Shick Oh),조용환(Yong-Hwan Cho),최승권(Seung-Kwon Choi) 한국엔터테인먼트산업학회 2012 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2012 No.11
본 논문은 무선 센서 네트워크와 관련된 연구 분야중 가장 중요하게 다루어지고 있는 에너지 효율 문제를 다룬다. 특히 클러스터 기반 네트워크를 위한 에너지 효율적인 클러스터 헤드 재선출 기법을 제안하였다. 기존의 클러스터 기반 라우팅 방식의 대표격인 LEACH 기법은 클러스터 헤드를 무작위로 재선출함으로써 클러스터의 편중과 에너지 소모의 공평성 문제를 가지고 있었다. 본 논문에서는 이를 해결하기 위하여 노드의 에너지 잔량을 고려한 클러스터 헤드 재선출 기법을 제안하였으며 실험을 통해 성능을 확인하였다.
무선 센서 네트워크를 위한 에너지 인지 클러스터링 기법
오충식(Chung-Shick Oh),나성원(Sung-Won Na),김남중(Nam-Jung Kim),최승권(Seung-Kwon Choi),조용환(Yong-Hwan Cho) 한국엔터테인먼트산업학회 2013 한국엔터테인먼트산업학회논문지 Vol.7 No.1
본 논문에서는 무선 센서 네트워크 관련 연구 분야에서 가장 중요한 이슈인 에너지 효율성에 기반을 두어, 클러스터 구성의 복잡성을 감소시키고 클러스터 헤드 재선출과 클러스터 재구성을 통하여 노드의 에너지 소모를 최소화하면서 네트워크 수명을 연장시킬 수 있는 에너지 인지 클러스터링 기법을 제안하였다. 제안 기법은 노드의 에너지를 고려한 클러스터 헤드 재선출과 불필요한 오버헤드를 감소시키도록 필요에 따라 동적으로 클러스터를 재구성하도록 하여 전체 네트워크의 에너지 효율을 높일 수 있도록 하였다. NS-2를 이용한 시뮬레이션 결과 제안 알고리즘을 적용한 기법이 에너지 효율을 높여 노드의 에너지 소모를 감소시키고 네트워크의 수명을 증가시켰음을 확인하였다. This paper proposes an energy-aware clustering method that can increase network lifetime and reduce complexity of cluster formation based on the energy efficiency which is the most important issue of the research field related to wireless sensor networks. The proposed method increases the energy efficiency of entire network by reforming cluster dynamically for reducing unnecessary overhead, and it also provides energy aware cluster head reelection. Simulation results using NS-2 show that the proposed method increases network lifetime and reduces energy consumption by increasing energy efficiency of each node.