남성 사무직 근로자의 신체활동량 분석

서구민 지역사회간호학회 2003 지역사회간호학회지 Vol.14 No.1

Purpose: This study was conducted to analyze occupational and leisure-time physical activity(LTPA) in male office workers and to examine factors related to LTPA. Method: The subjects for this study were 226 male office workers, from eight work places located in Seoul, who had no physical restrictions. Minnesota LPTA Questionnaire (Taylor et al., 1978) revised by Kim(1997) was used to measure LTPA and revised Tecumseh Occupational Physical Activity Questionnaire (Motoye, 1971) was used to measure occupational physical activity. The data were collected from May 4 to May 19, 2001 using a semi-structured questionnaire with interviews and self reports. The collected data were analyzed using SPSS Windows 10.0 Program. Results: The results of this study are summarized as follows. 1. The mean level of physical activity was 8,716.9kcal/wk. The occupational physical activity was at 6,605kcal/wk(75.8%) and the level of LTPA was 2,111.4kcal/wk (24.2%). 2. Using 2,000kcal/wk as a base for categorizing LTPA as active or inactive, it was found that there were 94 subjects(41.6%) in the active group. 3. Subjects in their thirties had a lower level of LTPA than subjects in other age groups(F=3.484, p〈.05). Physical activity, selfefficacy (r=.405, p=.000) and perceived health status (r=.301, p=.000) were positively related to LTPA. 4. Participants in club activities had a higher level of LTPA than those who did not (t=-2.369, p=.020). Support for physical activity(r=.164, p=0.13) was positively related to LTPA. Conclusion: This study suggested that to increase physical activity in male office workers, physical activity promotion programs should be established according to age and sex especially for those who are in their thirties and for women, and should include strategies strengthening support through peer groups and family, developing club activities and increasing physical activity self-efficacy.

과학영재를 가르치기 위한 창의적 화학자 폴링의 연구과정 분석

구민아,김지영,박종석,김영민,서혜애 韓國英才學會 2011 영재교육연구 Vol.21 No.4

과학영재를 가르칠 때 고려해야할 중요한 요소로 거론 되는 것 중 하나는 창의성이다. 과학 영재들에게 창의성을 향상시키는 방법은 여러 가지가 있지만, 과학자처럼 사고하고 탐구할 수 있는 기회를 제공하는 것도 한 가지 방법이다. 이에 이 연구에서는 과학영재의 창의성을 신장시키기 위해 창의적 화학자 ‘폴링’의 연구과정을 분석하였다. 분석에 활용한 자료는 폴링의 일대기와 연구 사례, 인터뷰 자료들이다. 이러한 자료들을 분석하여 창의적 사고방법과 연구방법 요소들을 각각 추출할 수 있었다. 창의적 사고방법 요소로는 귀추적 사고, 모순, 관점의 전환, 모형화, 단순화, 은유적 사고, 발산적 사고, 수렴적 사고가 추출되었다. 연구방법 요소는 반복 실험, 공동연구, 이론과 실험의 병행, 과학자의 사회적 책임이 추출되었다. 이러한 요소들을 과학영재를 지도할 때 사용하는 교육프로그램에 포함시킨다면 과학영재들은 창의적 과학자와 같은 행동을 따라함으로써 창의성 신장에 도움이 될 것이다. Creativity is always important in science gifted education. There are many research results about enhancing the creativity. One of the ways of enhancing students' scientific creativity is to let them think and research like scientists so that they can follow how scientists find problems and solve them. So in this study, scientific creative elements were extracted from the Pauling's detailed examples of research process by using many documents. Abductive reasoning, paradox, changing the perspective, modeling, simplifying, converging thinking, diverging thinking, and metaphorical thinking are thinking methods that were extracted from the Pauling's research process. Repeated experiment, co-experiment, using both theories and experiments, and social obligation as a scientist are research methods. Scientific creative elements that were extracted suggest some direction that have more scientific creativity, more ability to find problems, and more ability to form theories in science education or in science gifted education.

릴레이와 비례제어기를 이용한 이차시간지연 모델에 대한 목표함수를 이용한 IMC-PID제어기 동조

구민(Min Koo),서병설(Byung Suhl. Suh) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7

In this paper, A new tuning method for IMC-PID controller is proposed with the identification using the relay method from closed-loop transfer function. It is considered a second-order plus delay time(SOPDT) model and selected a third-order plus delay time transfer function model as a target function. The filter function is derived from the suitable target function to satisfy the design specifications. A robustness test was done to verify the robust-stability.

Stimulated Migration and Penetration of Vascular Endothelial Cells Into Poly (L-lactic acid) Scaffolds Under Flow Conditions

구민아,강재경,이미희,서혁진,권병주,류경은,김민성,김도현,박종철 한국생체재료학회 2014 생체재료학회지 Vol.18 No.2

Background: The initial procedure of the development of engineered tissues is cell seeding into three-dimensional polymer scaffolds. However, it is hard to make the cells invade into scaffold due to the characteristic of pore and material. Electrospun poly (L-lactic acid) scaffold and flow perfusion system were used to overcome these seeding problems. Materials and Methods: Before starting the experiment, we set up the parallel plate chamber system to observe endothelial cell migration under flow condition. In individual cell migration model, human umbilical endothelial cells started to migrate in the direction of flow at 8 dyne/cm2 and we observed the cytoskeleton alignment at 8 dyne/cm2. Results: This study has demonstrated the possibility to evaluate and analyze cell migration using the parallel plate chamber system and we may predict in vivo cell migration under flow condition based on these results. Also the flow perfusion system was established for the effective cell seeding into at three dimensional scaffolds. Moreover, shear stress induced by flow can enhance cell migration into PLLA scaffold that is in the form of cotton. Conclusions: Result indicated that cell penetration was achieved under flow condition better and more than under static condition throughout the matrix.

Titanium surface modification by using microwave-induced argon plasma in various conditions to enhance osteoblast biocompatibility

선경미,서혁진,권순영,이미희,권병주,김민성,구민아,박봉주,박종철 한국생체재료학회 2015 생체재료학회지 Vol.19 No.2

Background: Titanium is a well proven implantable material especially for osseointegratable implants by its biocompatibility and anti-corrosive surface properties. Surface characteristics of the implant play an important role for the evolution of bone tissue of the recipient site. Among the various surface modification methods, plasma treatment is one of the promising methods for enhance biocompatibility. We made microwave-induced argon plasma at atmospheric pressure to improve in titanium surface biocompatibility. Results: Various states of emission spectra from excited species-argon, nitrogen atoms and oxygen atoms were observed. The electron energy band structures are the unique characteristics of atoms and functional groups. Microwaveinduced argon plasma treatment changed the titanium surface to be very hydrophilic especially on the 5 s short treatment and 30 s, 90 s long treatment samples that detected by contact angle measurement. MC3T3-E1 attachment and proliferation assay significantly increased in 5 s at short treatment, 30 s, and 90 s at long treatment after 5 days incubation. Conclusions: Result indicated that microwave-induce argon plasma treatment would be an effective method to modify titanium surface for enhancing cell-material interactions.

고등학생의 음주문제행동과 성격특성

조원정,권인숙,김광숙,서구민 지역사회간호학회 2004 지역사회간호학회지 Vol.15 No.3

Purpose: This study intended to identify personality factors and related problematic behaviors of adolescents who drink alcohol in order to provide basic data for developing nursing programs. Methods: The data were collected from October to December 2002 from 1,080 high school students in Seoul. The Revised Cloninger's Tri-dimensional Personality Questionnaire (TPQ) was used to measure their personalities. The alcohol expectancy was measured using the tool revised by Cho (1999) and stress levels were measure using a stress tool revised Cho (1998). The data were analyzed with SPSS Windows using Chi square test, independent t-test, and logistic regression analysis. Results: 1. The percentage of fathers who drank was 79.8%, mothers, 54.3%, and friends, 54.3%. The alcohol expectancy averaged 6.36 while the stress levels were 132.79. 2. It was found that there are significant differences (p<.001) in problematic drinking behaviors according to the following variables: second year high school students among all grade variables, more monthly pocket money for the amount of money variables, the group of students who smoked in the case of the variable related to smoking, spending more time using the Internet for the Internet use variable, and having friends who drink 65.6% for the friend variable. The alcohol expectancy scale of those students who showed problematic drinking behaviors was higher than that of those who did not. There are four family-related stress subscales, and there was a significant difference among them (p<.05). Among the personal characteristics, the group who displayed problematic drinking behaviors seeks new experiences and reward dependence more than the group who did not exhibit those behaviors, and there were significant differences between the two groups. 3. When the socio-demographic and drinking-related factors were controlled, the tendency of seeking new experiences increased the risk of problematic behaviors 1.07 times. Compared to the non?smoking group, the smoking group was found to have a 5.06 time (p<.001) greater risk of displaying problematic drinking behaviors. In comparison with the non?drinking group, the drinking group was also found to have a 5.31 time (p<.001) greater risk of exhibiting problematic drinking behaviors. The group with high alcohol expectancy scores was significantly different from the group with the no alcohol expectancy, showing a 1.26 time (p<.001) greater risk of problematic drinking behaviors. Conclusions: Based on these results, the problematic drinking behaviors were connected with alcohol expectancies, friends and personality types. Therefore, we should develop an alcoholic prevention program for adolescence considering.

Effects of direct current electric-field using ITO plate on breast cancer cell migration

김민성,이미희,권병주,서혁진,구민아,류경은,김도현,박종철 한국생체재료학회 2014 생체재료학회지 Vol.18 No.3

Background: Cell migration is an essential activity of the cells in various biological phenomena. The evidence that electrotaxis plays important roles in many physiological phenomena is accumulating. In electrotaxis, cells move with a directional tendency toward the anode or cathode under direct-current electric fields. Indium tin oxide, commonly referred to as ITO has high luminous transmittance, high infrared reflectance, good electrical conductivity, excellent substrate adherence, hardness and chemical inertness and hence, have been widely and intensively studied for many years. Because of these properties of ITO films, the electrotaxis using ITO plate was evaluated. Results: Under the 0 V/cm condition, MDA-MB-231 migrated randomly in all directions. When 1 V/cm of dc EF was applied, cells moved toward anode. The y forward migration index was -0.046 ± 0.357 under the 0 V/cm and was 0.273 ± 0.231 under direct-current electric field of 1 V/cm. However, the migration speed of breast cancer cell was not affected by direct-current electric field using ITO plate. Conclusions: In this study, we designed a new electrotaxis system using an ITO coated glass and observed the migration of MDA-MB-231 on direct current electric-field of the ITO glass.

오마하 시스템(OMAHA SYSTEM)를 이용한 지역사회 주민들의 건강관리 요구조사

조원정,유일영,채선미,함옥경,서구민 연세대학교 간호정책연구소 2002 간호학탐구 Vol.11 No.1

최근 우리나라는 경제·사회적 발전, 인구구조의 변화, 그리고 질병양상의 변화에 따른 국민 건강요구의 증가를 경험하고 있다. 국민의 건강요구를 충족시키기 위해서는 무엇보다도 지역주민의 요구에 근거한 보건사업의 제공이 요구된다. 이를 위해서는 고위험 집단의 건강문제, 만성질환관리, 영유아보건, 정신보건, 가족문제, 자녀문제, 노인문제, 일상생활습관 및 영양, 운동 등의 건강관리뿐만 아니라, 사회, 경제적 문제와 환경문제 등을 포괄하는 종합적 가족사정이 필요하다. 특히 스스로 건강문제를 해결하지 못하는 소외계층을 우선 순위로하여 필요하다면 가정방문을 통하여 자료를 수집할 필요가 있다. 본 연구의 목적은 지역사회주민의 건강요구와 건강문제를 규명하는데 있어 오마하 분류체계의 적용가능성을 검증하기 위한 것으로 서울시의 한 개 등을 선정하여 주민들의 건강문제와 건강요구를 파악하였다. 간호대학 연구자들과 마포구 보건소 간호사가 합동 연구팀을 구성하여, 사업계획 수립 및 방문간호사들을 등기화시키기 위한 모임을 가졌고, 지역사회 지도자들 만나 연구 목적을 설명하여 정보수집을 위한 협조를 얻었다. 훈련된 공공근로 방문간호사 11명이 표준화된 도구를 이용하여 서울에 위치한 1개동 주민 총 1,499세대 4,024명에 대한 건강실태 및 건강관리요구조사를 하였으며, 자료수집도구로는 가족건강기록부, 연령별 건강력 조사지(임부, 산모, 신생아, 영유아, 성인용), 간이치매 사정도구(65세 이상), 및 방문간호서비스 요구 조사지가 이용되었다. 지역사회 내 가족 간호문제는 오마하 진단체계를 이용하여 빈곤, 주거환경 불량, 지지자원의 부족, 정서적 불안정, 부적절한 건강관리, 통증, 물질남용의 위험성 등의 간호진단이 도출되었다. 도출된 간호진단에 근거하여 건강교육, 건강증진 및 환경개선을 위한 프로그램을 제언하였다. 본 연구의 연구결과에 근거하여, 한국에서 지역사회주민의 건강요구를 규명하기 위해 오마하 분류체계를 이용하는 것은 적절한 것으로 판명되었다. The advancement of medical science, improved economic status, demographic transition, and changes in disease patterns have changed the expectations and demands of health and quality of life of people. Health promotion and prevention of illness are important aspects of public health. Provision of comprehensive health services tailored to the target community is required to many community health centers. The main purpose of this study was to test the feasibility of utilizing the OMAHA classification system to identify community health needs and health problems. The joint research team was organized by nurse educators and public health nurses at one community health center. From the beginning, frequent meetings were held to motivate public health nurses which was the key to success of this problem. A workshop for community leaders and stakeholders was held to gain cooperation for data collection. A survey of households was conducted to assess family and personal health history, and visiting nursing service needs. Trained eleven visiting nurses conducted data collection through home visiting. A total of 4,024 community residents from 1,449 households reside in one district of Seoul participated in the survey. Instruments used for the study include family health record, health history record for each age group, and requests for specific visiting nurses service. Using OMAHA system, seven community diagnosis were drawn. They were poverty, poor living conditions, lack of community resources, emotional instability, inappropriate management of health problems, pain, and high risk of substance abuse. Based on the results of this study, it is appropriate to use OMAHA classification system in identifying community health needs in Korea.

서울 일지역 청소년 흡연관련 요인 분석

이정렬,서미혜,조원정,배선형,이경희,함옥경,서구민 지역사회간호학회 2004 지역사회간호학회지 Vol.15 No.1

Purpose: The purpose of this study was to identify factors influencing adolescent smoking behavior in the Seoul area. Method: A total of 6,352 middle and high school students living in the Gangnam district of Seoul participated in the study. A self-report survey method was used to identify factors related to smoking. Result: A stepwise logistic regression analysis identified four factors associated with adolescent smoking: living with a parent who smokes (OR=1.4), having friend(s) who smoke (OR=14.8), negative attitudes toward passive smoking(OR = 4.8), and ignorance of the impact of smoking on health. Conclusion: Based on the study results, components of effective programs to reduce adolescent smoking rates should include programs to deal with peer pressure to smoke and to reduce the impact of parents who smoke, to increase knowledge of the impact of smoking, and to promote positive attitudes toward anti smoking

지역사회간호학의 문제중심학습(Problem-Based Learning) 평가

이정렬,조원정,서미혜,김의숙,이경희,배선형,김광숙,서구민,함옥경 지역사회간호학회 2003 지역사회간호학회지 Vol.14 No.4

The goal of community health nursing courses is to prepare student nurses so that they become able to perform a variety of nursing roles in community. To achieve this goal, programs for community health nursing must develop students' abilities to function independently as community health nurses. This study evaluated the effectiveness of Problembased Learning(PBL) as a teaching method in programs for community health nursing at four-year colleges of nursing. The subjects of this study were senior students at Y University. The study was designed as a descriptive & comparative survey. To determine the effectiveness of PBL, the author analyzed the process and results of teaching. The PBL teaching method was found to be significantly effective in building critical thinking abilities and increasing knowledge. The results also showed that the 43 students who were taught by both PBL and lecture teaching methods got a significantly higher knowledge score than the other 28 students who were taught only by lectures. As for the future direction of community health nursing courses, a teaching strategy involving both PBL and lectures is recommended.