서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

혈관내피세포 유무에 따른 돼지 관동맥에서의 Endothelin에 대한 반응

홍명기,김재중,이철환,박성욱,박승정 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.12

CAN 프로토콜 성능 해석에 관한 연구

홍승호,김욱헌 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1

CAN에 접속된 각종 필드 장비들로부터 생성되는 데이터는 크게 산발적 실시간, 주기적 실시간 및 비실시간 데이터의 세 가지 종류로 구분된다. 특성이 다른 이러한 데이터들의 트래픽이 하나의 네트워크 미디엄을 공유하는 경우에 네트워크 트래픽이 적절히 관리되지 못하면 CAN 버스에 접속되는 응용시스템의 성능에 악영향을 미칠 수 있다. 본 연구는 CAN을 자동화 시스템에 도입하는 경우에 실시간 데이터가 전송 허용 한계치를 넘지 않는 동시에 CAN 대역폭을 충분히 활용하도록 하는 대역폭 할당 기법을 제시한다. 본 연구에서는 또한 CAN의 이산 사건 시스템 모델과 제어 시스템의 연속 시간 모델을 통합한 통합 시뮬레이션 모델을 개발한다. 시뮬레이션 모델을 통하여 본 논문에서 제시하는 대역폭 할당 알고리듬의 타당성을 검증하고 실시간 데이터의 지연 시간이 실시간으로 동작되는 제어 시스템의 성능에 미치는 영향을 분석한다. Messages generated from field devices connected by CAN bus are classified into three categories : (1) real-time aperiodic messages, (2) real-time periodic messages, (3) non-real-time messages. Because these share one CAN bus medium, if the traffic of these messages are not efficiently managed, the performance of the application systems interconnected into the CAN bus can be degraded. This paper proposes a bandwidth allocation scheme that satisfies the performance requirement of application systems as well as fully utilizes the bandwidth of CAN bus. Using the simulation model of CAN bus, this study validates the bandwidth allocation scheme and analyzes the effect of network-induced delay on the performance of control system.

조각과 건축용 석재 특성 연구

홍성도,홍영균,손승현,심승욱 弘益大學校 2001 미술디자인 논문집 Vol.- No.6

In sculpture and building construction, stone has been generally used as basic material. However, the Information of its characteristics are poor to use stone in these fields. So this study focused on various characteristics of domestic and overseas natural stone. This study provides the basic data for the choice of stone to be used in sculpture and building construction and will be a foundation of further study of new method in manufacture and construction.

환율결정이론에 대한 실증분석

홍승기,김정욱 동국대학교 경제경영연구원 무역연구부 1999 國際貿易硏究 Vol.23 No.2

자동차 공조용 핀형 열교환기의 성능특성에 관한 연구

홍경한,전상신,이승재,박찬수,권일욱,김재열,김병철,하옥남 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4

Fin-tube type(Fin-type) heat exchanger has been tested in order to replace the heat exchanger of parallel flow type(P.F-type) which is now widly used in automobile air conditioning system. The following conclusions are drawn by the comparison of the characteristics of the heat exchangers. Evaporator and condenser capacities and COP(Coefficience of performance) were varied as with the compressor speed, outdoor air temperature and air flow rate changed, which much influenced on the characteristics of the air conditioning system. Evaporator and condenser capacities were increased with increasing compressor speed and outdoor air temperature. Evaporator and condenser pressures of Fin- type were decreased by 7% and 5% respectively compared with those of P.F-type. The COP of Fin-type was decreased with increasing outdoor air temperature and compressor speed. The COP of P.F-type was decreased by 14% compared with that of Fin-type.

제주도 고등학교 학생들의 비만 정도, 심혈관 위험인자, 소아시 비만과의 관련성

홍성철,황승욱,현인숙 韓國保健敎育.健康增進學會 2003 보건교육건강증진학회지 Vol.20 No.2

Background: Recently, adolescent obesity was increased and tended to become obese adults, facing increased risk for diabetes, cardiovascular disease. Even before reaching adulthood, adolescent obesity already was experiencing hypertension, dyslipidemia, and diabetes mellitus. The purpose of this study was to find prevalence of obesity of high school students in Jeju island and association between obesity and cardiovascular risk factors and association between childhood obesity and adolescent obesity. Method: The study subjects were 6,064 students of twenty-two high school in Jeju island and health survey data was gathered from high school health examination data and hospital health examination data from Aug. 1999 to Dec. 1999. Adolescent obesity was evaluated by ideal body weight method in 1998 and body mass index. Cardiovascular risk factors were checked total cholesterol, systolic and diastolic blood pressure, fasting blood sugar. In 1,534 students, obesity at primary school is checked by primary and middle school health record. Results: Prevalence of obesity in Jeju island high school students is 12.6% in male students, 13.3% in female students by ideal body weight method and 8.7% in male students, 8.5% in female students by body mass index. Prevalence of obesity of male students in city area and district area of Jeju island were each 12.9%, 10.3% and that of male students in city area was significantly higher. Prevalence of obesity of female students in city area and district area of Jeju island were each 12.9%, 14.2% and not significantly different. Prevalence of obesity of male students in general and commercial school group were each 13.9%, 10.3% and that of general school group was significantly higher. In female students, Prevalence of obesity general and commercial school group was not significantly different. Total cholesterol, systolic and diastolic blood pressure were significantly associated with degree of obesity in male and female students(P<05) and fasting blood sugar was only significantly associated with degree of obesity in male students(P<05). In 1,514 students checked by health record, Odds ratio of obesity at primary and middle school that at high school were 12.96~22.77 and was significantly associated. Conclusion: Prevalence of obesity of high school students in Jeju island is very high and adolescent obsity was significantly associated with cardiovascular risk factors. Mostly childhood obesity tended to become adolescent obsity and program of control of obesity at childhood and adolescence is required.

Strut-and-Tie Model을 利用한 鐵筋콘크리트 部材의 剪斷解析

林承旭,朴弘用 명지대학교 공학기술연구소 1992 공학기술연구소 논문집 Vol.7 No.-

Recently, Strut-and-Tie Model(STM) is proposed as a rational and consistent basis for analysis and design of any part of cracked reinforced and prestressed concrete structures which include so called disturbed or discontinuity regions, subject to bending, shear and torsion. In this paper, first, theoritical backgrounds of STM as well as modelling and analyzing methods are introduced. Then, the funtion of STM is confirmed by applying STM to some examples of other reseacher's experiments on reinforced concrete deep beams and comparing with test results and ACI Code provisions.

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.

제주도 고등학교 학생들의 비만 유병률과 심혈과 위험인자

황승욱,김현주,홍성철,이상이 제주대학교 생명과학연구소 2002 제주생명과학연구 Vol.5 No.6

연구배경 : 최근 청소년 연령층의 비만이 급격히 증가하고 있으며, 비만 청소년들에 있어서 고혈압, 당뇨, 고지혈증이 조기에 발현될 뿐 아니라 성인비만과 성인병 발생의 주 원인이 되고 있다. 본 연구는 제주도내 고등학생들의 비만 유병률과 청소년 비만과 심혈간 위험인자인 혈압, 총콜레스테롤, 공복시혈당의 관련성을 알아보고 소아비만과 청소년 비만의 관련성을 조사하였다. 방법 : 연구대상은 제주도내 22개 고등학생 1학년 6,064명을 대상으로 하였고. 체격조사는1999년도 학교 신체검사 자료와 병원 건강검진 자료를 이용하였다. 비만에 대한 평가는 대한소아과학회에서 발행한 1998년도 한국소아표준치와 체질량 지수 두가지를 이용하였다 심혈관 위험인자로는 총콜레스테롤 수축기 혈압, 이완기혈압 공복시 혈당으로 하였으며, 배상자중 646명에 대해 과거 건강기록부를 열람하여 초등학생 때의 비만실태를 조사하였다. 결과 : 제주도 고등학생의 비만 유병률은 표준체중에 의한 비만 산출법으로는 남, 여학생 각각 12.6%, 13.3%이었고 체질량 지수에 의한 비만 위험군 및 비만 학생이 남, 녀 각각 12.7%, 13.4%로 나타났다. 지역에 따른 비만 유병률은 남학생의 경우 시 지역 12.9%, 군 지역 10.3%로 시 시역에서 비만 유병률이 유의하게 높았으며, 여학생의 경우 시·군지역 각각 12.9%, 14.2%이었으나 통계적 유의성은 없었다. 고등하교 계열에 따른 비만 유병률은 남학생의 경우 인문계 13.9%, 실업계 10.1%로 인문계가 유의하게 높았으나, 여학생의 경우는 통계적 유의성은 없었다. 비만 정도에 따른 심혈관 위험인자와의 관련성에서 남학생의 경우 수축기와 이완기혈압, 공복시혈당, 총콜레스테롤 수치가 비만 정도에 따라 유의한 차이를 보였으며(P<0.05), 여학생의 경우 공복시혈당을 제외한 나머지 변수에서 유의한 차이를 보였다. 체질량지수와 심혈간 위험인자간의 상관관계에서 남학생은 혈압, 공복시혈당 총콜레스테롤이 유의한 양의 상관관계를 보였으며, 여학생의 경우 공복시혈당 외에 다른 수치에서 유의한 양의 상관관계를 보였다. 연구대상자 중 646명에 대해 초등학교 1학넌 때의 비만실태를 추적한 결과 초등학생 비만이 고등학생 비만에 미치는 비교위험도가 남녀 각각 3.77, 2.16으로 유의하게 나타났다(P<0.05). 결론 : 제주도지역 고등학생들의 비만 유병률이 상당히 높게 나타났고, 청소년 비만과 심혈관 위험인자간의 관련성을 알 수 있었다. 또한 소아비만이 청소년 비만으로 상당수 이행되었으므로 소아 및 청소년기에 적절한 비만관리 프로그램이 요구된다. Background: Recently, adolescent obesity was increased and tended to become obese adults, facing increased risk for diabetes, cardiovascular disease. Even vefore reaching adulthood, adolescent, obesity already was experiencing hypertension, dyslipidemia, and diabetes mellitus. The purpose of this study was to find prevalence of obesity of high school students in Jeju island and association between obesity and cardiovascular risk factors and association between childhood obesity and adolescent obesity. Method: The study subjects were 6,064 students of twenty-two high school in Jeju island and health survey data was gathered from high school health examination data and hospital health examination data from Aug. 1999 to Dec. 1999. Adolescent obesity was evaluated by ideal body weight method in 1998 and body mass index. Cardiovascular risk factors were checked total cholesterol, systolic and diastolic blood pressure, fasting blood sugar. In 646 students, obesity at primary school is checked by primary school health record. Results: Prevalence of obesity in Jeju island high school students was 12.6% in male students, 13.3% in female students by ideal body weight method and Prevalence of obesity risk and obesity was 12.7% in male students, 13.4% in female student by body mass index. Prevalence of obesity of male students in city area and district area of Jeju island were each 12.9%, 10.3% and that of male students in city area was significantly higher. Prevalence of obesity of female students in city area and district area of Jeju island were each 12.9%, 10.3% and that of male students in city area was significantly higher. Prevalence of obesity of female students in city area and district area of Jeju island were each 12.9%, 14.2% and not significantly different. Prevalence of obesity of male students in general and commercial school group were each 13.9%, 10.1% and that of general school group was significantly higher. In female students, Prevalence of obesity general and commercial school group was not significantly different. Total cholesterol, systolic and diastolic blood pressure were significantly associated with degree of obesity in male and female students(P<0.05) and fasting blood sugar was only significantly associated with degree of obesity in male students (P<0.05). In 646students, Relative risk of obesity at primary school and that at high school in male and female students were 3.77, 2.66 and was significantly associated. Conclusion: Prevalence of obesity of high school students in Jeju island is very high and adolescent obesity was significantly associated with cardiovascular risk factors. Mostly childhood obesity tended to become adolescent obesity and program of control of obesity at childhood and adolescence is required.