OMS/MP 및 유사체계 야전운용데이터를 활용한 감시체계 A의 RAM 목표값 설정 개선 방안

김상부,박우재,유재우,이자경,Kim, Sang Boo,Park, Woo Jae,You, Jea Woo,Lee, Ja Kyoung 한국시스템엔지니어링학회 2019 시스템엔지니어링학술지 Vol.15 No.1

In this study, an improved method of setting the RAM goals for surveillance system using OMS/MP and field operations data of similar systems is suggested and a case study of surveillance system A is given. Newly suggested methods for setting the RAM goals consist of the procedures such as On/Off time analysis of configuration equipment based on OMS/MP, field operations data analysis of similar systems, adjustment of preventive maintenance time, the number of corrective maintenances, and TALDT in wartime, introducing new subsystem to reliability structure of surveillance system, and reflecting expert's opinion. A case study of surveillance system A shows that newly suggested method in this study for setting the RAM goals is reasonably acceptable and practically applicable to other similar systems.

프로토콜 분석을 통한 웹 기반 전자상거래에서의 어포던스 연구

장동훈(Dong Hoon Chang),이자경(Ja Kyoung Lee),유효정(Hyo Jung Yoo) 한국HCI학회 2004 한국HCI학회 학술대회 Vol.2004 No.2

한국인 성인 남녀의 흡연관련 사망 수 추정 : 1981-2003

지선하(Sun-Ha lee),이자경(Ja-Kyoung Lee),김일순(Il-Soon Kim) 한국역학회 2006 Epidemiology and Health Vol.28 No.1

  Objectives: Cigarette smoking has been "Widely recognized as a major risk factor for lung cancer and other diseases in Western countries. In Korea, male cigarette smoking prevalence is among the world"s highest and smoking has also become a strong risk factor for lung cancer and cardiovascular diseases. The objectives of the study were to calculate the smoking-attributable mortality in Korea and to predict future smoking-attributable mortality based on the observed data.   Methods: Number of smoking-attributable deaths were calculated by applying the percentages of population attributable risks (PARs) to the estimated number of deaths by diseases. In this study, PARs were obtained by using relative risks from Korean Cancer Prevention Study and population smoking prevalence.   Results: Among adult male, the smoking-attributable mortality (40,087) represents 30.75% of total 2003 mortality, whereas the smoking-attributable mortality (6,120) for adult females was 5.70%. Smoking was supposed to be responsible for 37.29% of all male cancer and 26.73% of all male cardiovascular diseases, whereas smoking for 4.68% of all female cancer and 5.93% of all female cardiovascular diseases in Korea.   Conclusion: Smoking actually represents a remarkable burden of avoidable deaths in Korea. Smoking-attributable mortality appears to continue increasing in the last years.

한국인의 사회경제적 불평등에 따른 주관적 건강수준의 차이와 건강행태 기여요인 분석

김민경,정우진,임승지,윤수진,이자경,김은경,고난주,Kim, Min-Kyung,Chung, Woo-Jin,Lim, Seung-Ji,Yoon, Soo-Jin,Lee, Ja-Kyoung,Kim, Eun-Kyung,Ko, Lan-Ju 대한예방의학회 2010 예방의학회지 Vol.43 No.1

Objectives: The study is investigated socioeconomic variations in self-rated health status and contribution of health behavioral factors in Korea. Methods: A nationally representative sample (2,800 men and 3,230 women aged 20-64 years) from the 2005 Korea National Health and Nutrition Surveys was analyzed using logistic regression. Results: Self-rated health was lower among lower socioeconomic groups compared with higher socioeconomic groups, with gender being irrelevant. This association was attenuated when health behavioral and socio-demographic factors were adjusted. When each health behavioral factor was considered separately, mediators such as smoking in men, and stress or exercise in women explained a large part of the decreased socioeconomic health inequalities. Conclusions: In Korea, subjective health inequalities arise from different socioeconomic status, but this difference is decreased by health behavioral factors. Therefore, socioeconomic inequity in self-rated health status can be corrected more effectively by promotional health behaviors.

몽골이주노동자 미성년 자녀들의 건강상태와 장애요인에 관한 연구

박현주 ( Hyoun-Ju Park ),오희철 ( Hee Choul Ohrr ),이자경 ( Ja Kyoung Lee ),설동훈 ( Dong Hoon Seol ) 한국보건정보통계학회 (구 한국보건통계학회) 2010 한국보건정보통계학회지 Vol.35 No.1

Objectives: The purpose of the study is to investigate the general health conditions among children of migrant workers in Korea and to make valid suggestions in implementing policies in related fields. Methods: A sample of the study consists of 89 migrant children and 321 Korean children of same age group living in the same region, and they were asked about subjects concerning social characteristics and health-related issues. Findings were analyzed by the SAS 8.0 system, and a chi-square test and a t-test were conducted to define any relational components among variables. Results: Male migrant children showed significantly higher score in the area of cognitive perception than the female counterpart, and a strong relation was noticed between sense of self-esteem and social support. Duration of migration was also found to be another positive element promoting positive self-awareness. Conclusions: The findings suggest some valid components to be considered, however, the study recommends a more systematic research in order to promote an awareness of their anthropological and social characteristics and to implement social programs and other health-related policies.

경두개 도플러를 이용한 두부 하강 체위에 따른 뇌혈류 변화

이자경,한종인,정락경,이귀용,김종학,김치효,이춘희 梨花女子大學校 醫科大學 醫科學硏究所 1997 EMJ (Ewha medical journal) Vol.20 No.3

목적: 두부 하강 체위는 뇌혈류와 뇌압 및 혈역학적 변화를 초래한다고 알려져 있다. 이러한 체위 변동시 변화 정도에 따른 대뇌혈류 변화 정도와 뇌혈류의 자동 조절 기능의 발현 시간의 차이 정도를 알아보고자 한다. 방법: 건강한 성인 여자 12명을 대상으로 두 군으로 나누어 10˚(제1군) 또는 15˚(제2군) 두부 하강 체위를 취하게한 뒤 혈압, 심전도, 심박수, 호기말 이산화탄소 농도 및 경두개 도플러를 이용한 중대뇌 동맥 혈류 속도를 체위 변경전, 변경후 1,2,3,5,7,9,11분에 측정하여 비교, 분석하였다. 결과: 10˚ 및 15˚ 두부 하강 체위시와 각 체위간 뇌혈류 속도의 통계적으로 유의한 변화는 없었다. 제 1군에서 1,2분의 이완기 혈압, 5분의 평균 동맥압, 7분의 호기말 이산화탄소 농도 및 2군에서 5,7,9,11분의 수축기 혈압, 9분의 평균 혈압은 통계학적으로 의미있게 증가하였다. 결론: 심혈관계가 안정되고 뇌혈류나 뇌압의 이상이 없는 건강한 성인에서 각각 10˚ 와 15˚ 의 두부 하강 체위시 뇌혈류의 유의한 변화는 없었다. 그러나 혈역학적 변화는 임상적으로 유의하다고 할 수 없었으나 통계적으로 유의한 변화를 보였다. 따라서 심혈관계 질환을 가진 환자나 심혈관계가 불안정한 경우, 혹은 뇌질환이나 뇌손상이 있는 환자에서 HDT를 필요로 하는 경우에는 주의를 요하며 꼭 필요한 경우에는 15˚ 이내로 제한하는 것이 바람직하다고 할 수 있겠으며 체위 변동후 최초 10여분간 혈역삭적 변화에 주의를 기울여야 하겠다. Objectives : The head-down tilt(HDT) position infuses changes in cerebral blood flow, intracranial pressure, hemodynamic and respiratory system. This study was performed to evaluate the changes in cerebral blood flow and the onset of autoregulation according to the different degree of HDT. Methods : The subjects were 12 healthy adult female volunteers. They were divided two groups : 10˚ HDT(group 1) and 15˚ HDT(group 2). The systolic, diastolic and mean blood pressure, heart rate, end-tidal CO_2 concentration and cerebral blood flow velocity on middle cerebral artery by transcranial Doppler were measured before positioning and 1,2,3,5,7,9,11 minute after positioning. Results : There was no significant changes in cerebral blood flow velocities statistically according to the HDT under 15 degrees. In group 1, vean arterial blood pressure were increased at 5 minutes and returned to control value at 7 minutes after HDT with statistical significances. Diastolic blood pressure in group 1 were increased at 1 and 2 minutes after HDT with statistical significances. In froup 2, systolic blood pressure were increased at 5,7,9,11 minutes after HDT statistically significantly. Conclusion : There were no significant changes of cerebral blood flow under less than 15˚ HDT. But systolic blood pressure were increased with 15˚ HDT in the healthy adults statistically significantly(p<0.05) not but clinically. So, we suggested that if HDT is required, er should take care of the partients more than 10 minutes after HDT.

과반사성 신경인성 방광 환자에서의 지주막하 차단 효과

이자경,한종인,이춘희,이귀용,정락경,이청기 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.4

Spinal reflex activity that remains after insult to the spinal cord brings with it significant functional impairment. Our patient had suffered from general spasticity and hyperreflexic neurogenic bladder caused by sixth cervical cord injury. Unfortunately, the use of oral medication(baclofen) was limited by an inadequate effect. So we performed two times of subarachnoid block with 0.5% heavy bupivacaine, the patient experienced improvement in bladder and sphincter function. We concluded that subarachnoid block with 0.5% heavy bupivacaine is an effective and safe modality for spasticity control in patients who are refractory to oral medication before neurolytic block. (Korean J Anesthesiol 1997; 33: 770∼773)