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애드 혹 무선 네트워크에서의 링크 안정성 기반 라우팅 알고리즘
임세영,김훈,유명식,Lim Se-Young,Kim Hun,Yoo Myung-Sik 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.7B
The routing algorithm is one of the key research areas in ad hoc networks. The most of existing routing algorithms depends on current availability of wireless link when finding the feasible path. Dependence on current information may mislead to a fragile communication path. Some routing approaches that take statistical average on received signal power enhance the possibility to find the most stable path, but have limitation on considering only the average power level. In this paper, we propose routing algorithm based on link stability for ad hoc network. The proposed algorithm not only takes statistical average, but also traces the degree of variations in received signal power. The simulation result support that the proposed algorithm is more likely to find the most stable path under the severe communication environment. 애드 혹 네트워크에서 라우팅 알고리즘은 매우 중요한 연구 분야중의 하나이다. 기존의 라우팅 알고리즘은 현재의 네트워크 토폴로지 상황만을 고려하여 라우팅 경로를 설정하기 때문에 안정적인 라우팅 경로를 설정하는데 많은 어려움이 있다. 이와 같은 문제점을 해결하기 위해 수신 신호 세기를 이용하여 라우팅을 수행하는 알고리즘들이 제안되었지만, 이들은 평균 수신 신호 세기만을 고려하였기 때문에 라우팅 프로토콜의 성능 향상에는 한계가 있다. 따라서 본 논문에서는 평균 수신 신호 세기와 수신 신호 세기의 변화를 고려한 링크 안정성 기반의 라우팅 알고리즘을 제안하였다. 제안된 알고리즘의 성능을 분석하기 위해 다양한 환경에서의 모의실험을 수행하였으며, 그 결과 기존의 알고리즘보다 우수한 성능을 보임을 확인하였다.
응급의료종사자의 수면의 질이 스트레스와 직무만족도에 미치는 영향
임세영(Se-Young Lim),이현지(Hyeon-Ji Lee) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.9
본 연구는 응급의료종사자의 수면의 질이 스트레스와 직무만족도에 미치는 영향을 알아보고자 K도와, C도에 소재한 종합병원 응급의료센터에서 교대 근무하는 응급의료종사자 209명을 대상으로 2015년 3월 1일부터 6월 30일까지 조사하였다. 수집된 자료는 Windows용 SPSS 20.0을 사용하여 빈도분석, 요인분석과, Cronbach"s ⍺ 분석, 기술통계와 상관관계, 다중회귀 분석을 실시하였다. 연구결과는 다음과 같다. 첫째, 수면의 질과 스트레스, 직무만족도의 요인 간에는 유의한 상관관계가 있었다. 둘째, 수면의 질은 신체적 스트레스와 심리적 스트레스에 영향을 미치는 것으로 나타났다(p<.001). 셋째, 수면의 질이 직무만족도에 영향을 미치는 것으로 나타났다. 수면 후 회복, 잠들기 어려움, 일어나기 어려움, 수면유지 어려움이 직무만족에 유의한 영향을 미쳤다. 넷째, 심리적 스트레스는 직무만족도에 부분적으로 영향을 미치는 것으로 나타났다(p<.01). 본 연구결과로 볼 때 수면의 질을 향상시키기 위한 적절한 인력의 확충을 도모하고 응급의료종사자의 업무 외 적정의 수면시간을 보장하며 신체적 스트레스와 심리적 스트레스 감소를 위한 직장 내 표준화된 프로그램을 개발하여 직원들의 직무만족도를 높이기 위해 다양하고 전문적인 제도적 방안이 필요할 것으로 사료된다. The purpose of this study was to examine the impact of the quality of life of emergency medical workers on their stress and job satisfaction. The subjects in this study were 209 selected emergency medical workers who worked shifts in the emergency medical centers of general hospitals located in two different provinces. A survey was conducted from March 1 to June 30, 2015. The collected data were analyzed by SPSS 20.0 for Windows usingfrequency analysis, factor analysis, Cronbach alpha coefficients, descriptive statistics, correlation analysis and multiple regression analysis. The findings of the study were as follows: First, the quality of life was correlated with stress and job satisfaction. Second, the quality of life was found to have affected the levels of physical and psychological stress(p<.001). Third, the quality of life was found to have exercised an influence on job satisfaction. Job satisfaction was under the significant influence of post-sleep recovery, difficulty in falling asleep, difficulty in getting up and difficulty in sleep maintenance. Fourth, psychological stress was found to have had a partial impact on job satisfaction(p<.01). Given the findings of this study, an appropriate increase in staffing and the guarantee of proper sleeping hours are necessary to improve the quality of sleep. Moreover, the development of programs that aim at relieving physical and psychological stress is required. Thus, various institutional measures should be taken to boost job satisfaction.
이동최소제곱 다절점 유한요소를 이용한 새로운 전역-국부해석
임재혁,임세영,Lim, Jae-Hyuk,Im, Se-Young 한국전산구조공학회 2007 한국전산구조공학회논문집 Vol.20 No.3
본 연구에서는 이동최소제곱 다절점 유한요소를 이용한 새로운 전역-국부해석기법을 제시하였다. 다절점 유한요소는 요소의 변에 임의의 수 절점을 가질 수 있으므로, 여러 개의 유한요소를 요소망의 재구성 없이 동시적으로 결합시킬 수 있다. 이는 응력구배가 집중되는 곳에 유한요소망을 구성하는 데에 있어 큰 편의를 제공한다. 또한 기존의 전역-국부해석기법처럼 중첩된 요소망을 사용하거나, 지배방정식을 두 번 해석할 필요가 없기 때문에 매우 간편하고 정확하다. 제시된 방법론의 성능을 검증하기 위해 응력 집중과 관련된 다양한 다중스케일 문제를 해석하였다. We present a new global-local analysis with the aid of MLS(Moving Least Square) variable-node finite elements which can possess an arbitrary number of nodes on element master domain. It enables us to connect one finite element with a few finite elements without complex remeshing. Compared to other type global-local analysis, it does not require any superimposed mesh or need not solve the equilibrium equation twice. To demonstrate the performance of the proposed scheme, we will show several examples in relation to capturing highly local stress field using global-local analysis.
김세영(Kim, Se-Young),임세영(Lim, Se-Yung) 질적연구학회 2013 질적연구 Vol.14 No.1
Purpose: This study researched into the members" perception of hospital organizational culture from the viewpoint of an outsider having a comparatively objective stance. For this study, the question, "What do the members of N hospital perceive their organization to be and what do they think the organization should be?", was taken as the key issue. Methods: Ethnography was taken to explore the members" behaviour and interaction through their perception. In this study 18 people were individually interviewed, who were the key human resources of the hospital organization such as doctor and nurse, for 6 months. Results: The result finally showed the organizational culture of N hospital as expressed in the following 5 categories: "take a peep at the field"; "the first choice"; "medical personnel"s narrative"; "the management of the structure"; "perception and perspective". Conclusion: Firstly, the employees of the hospital found expectation of the desirable organization in which they grow, having meaningful enthusiasm. Secondly, the members of the hospital were sympathetic towards the necessity of appropriate complementing institution or system. Thirdly, the employees of the hospital need autonomous organizational culture based on their trust.
산후조리원(産後調理院) 재원(在院) 산모(産母)의 산후조리(産後調理)에 대한 인식(認識) 조사(調査)
정재중 ( Jung Jae Joong ),송호림 ( Song Ho Lim ),배경연 ( Bae Kyeong Yeon ),이용현 ( Yong Hyun Lee ),임세영 ( Se Young Lim ),유상민 ( Sang Min Yoo ),김동일 ( Dong Il Kim ) 대한한방부인과학회 2005 大韓韓方婦人科學會誌 Vol.18 No.3
Purpose: 1. To analyze the cognition and realities of postpartum care and to aid the spread of oriental medicine in postpartum care. 2. Get a basic guideline of postpartum care home and O.M.D.`s role model of postpartum care. Methods: We studied the cognition and realities of postpartum care with questionnaire from May 2005 to July 2005, in postpartum care home at Gangdong-gu and Seocho-gu. 147 puerperants answered us. Results: Puerperants pay postpartum care for without regard to economic state. 59.2% of 147 puerperants replied that the reason of postpartum care at postpartum care home is for systematic care. Important selection guidelines of postpartum care home are expertness at infant and puerperant management. We can find that 78.2% of 147 puerperants will visit oriental medical clinic for postpartum care and 61.2% of 147 puerperants will take herb-medicine. Conclusion: Puerperants has well-expectation in postpartum care by oriental medicine. There is much room for extension of oriental medical province in postpartum care. So continuous publicity activities about oriental medical postpartum care are required.
김성욱,김태희,정성엽,조윤철,김철수,임세영,Kim, Sung-Wook,Kim, Tae-Hui,Jung, Sung-Yub,Cho, Yoon-Chul,Kim, Chul-Soo,Lim, Se-Young 대한약침학회 2003 Journal of pharmacopuncture Vol.6 No.2
Objective : The purpose of this study is to show that there was a significant result in prescribing Herb remedy and Korean-Bee-Venom acupuncture and acupuncture & moxibustion therapy to Urinary incontinence patients due to Neurologic Bladder caused by Cauda equina syndrome after having an vertebrae lumbale operation. Method : The methods used in this study was observe the patient's subjective improvement, valuation of the bladder function and the change of the sensibility drop when Herb remedy and Korean-Bee-Venom acupuncture and acupuncture was applied. Results : When acupuncture and Korean-Bee-Venom acupuncture was both applied the function of Bladder changed from score 10 to 0 and the Grade of Urinary Incontinence changed from Grade III to 0 also with the sensibility drop. Conclusion : The results show that when using Umnungchon(SP9), Yangnungchon (GB34), Taedon(LR1), Kokkol(CV2) there was an effect to some degree to the Urinary incontinence patients but when Korean-Bee-Venom was acupunctured to Kwanwon(CV4) and Kihae(CV6) the effect increased. Further studies and examples for evidence are required.