시_윤희상

윤희상 새얼문화재단 2008 황해문화 Vol.59 No.-

고주파인버어터의 설계에 관한 연구

尹熙相 湖西大學校 工業技述硏究所 1988 工業技術硏究所論文集 Vol.7 No.-

The demand for higher switching frequencies in power conversion. has rekindled int-erest in resonant mode topolongies. Most of conventional resonant inverter circuitits oper-ate phase shift PWM, however, this study describes the optimal single pulse in orthe to reduce total harmonics distortion. For frequncy tracking, a phase locked loops circuits is used main control element to detect the phase difference of voltage and current of series resonan load. A prototype inverter using POWER MOS FET has been tested with a tranducer to demonstrate experimentally the proposed drive gate circuits.

취학전 아동의 舞踊敎育에 관한 硏究

尹熙相 春川敎育大學 1983 論文集 Vol.23 No.-

한국 소아 A형 간염 현황

윤희상 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.7

The age-specific anti-hepatitis A virus (HAV) seroprevalence rates in South Korea have changed markedly since the last 2030 years with an improvement in the socio-economic, housing, and environmental-sanitation conditions. These changes are characterized by very low anti-HAV seropositive rates among individuals less than 30 years of age; however, nowadays, most adolescents and young adults at an increased risk of developing symptomatic HAV infections. The Korea Center for Disease Control Sentinel Surveillance System has recently revealed an increase in the incidence of hepatitis A infection since 2001 and has revealed a potential endemic nature of the hepatitis A infection. Hepatitis A vaccines that were introduced in 1997 in Korea have made the current anti-HAV IgG positive rates in children (less than 10 years of age) approximately 50% of the rates observed in Seoul in 2006. However, in the same year, a few children were diagnosed as having anti-HAV IgG antibodies in Busan. This suggests the presence of some difference in the vaccination policy among doctors practicing in Seoul and Busan. Thus, the current recommendation of vaccinating 12-year-old child with HAV vaccination should be emphasized and a new strategy should be developed for the vaccination program to cater to the adolescents and young adults who are not immune, as well as for persons who are at a high risk for hepatitis A viral infection such as military personnel and hospital and day care center employees. Further, urgent hepatitis A vaccinations are also needed in patients with chronic liver diseases.

Analysis of high temperature tapping process and low temperature CP process of PV module

윤희상,송형준,고석환,주영철,장효식,강기환 한국진공학회 2018 한국진공학회 학술발표회초록집 Vol.2018 No.2

초등학생의 건강생활실천정도에 영향을 미치는 사회 경제적 요인

윤희상,정상혁 韓國學校保健學會 2005 韓國學校保健學會誌 Vol.18 No.2

Purpose : This study explores the relationship between the health behavior and knowledge of elementary school students and the socio-economic status of their parents. Methods : A self-administrated quenstionnaire was provided to 238 students and their parents living within Seoul metropolitan area. The questionnaires were administered during December 2003. The relationship betweensocio-economic status, health behavior (19 items) and health knowledge (15 items) were analyzed using correlation, t-test and one-way ANOVA. Multiple regression analyses were also performed in order to investigate the relationship between health behavior and socio-economic status. Results : The results of multiple regression demonstrated that the health behavior of children living in apartments was 2.29 higher (β=2.29) than those not living in apartments. Health behavior scores among students with highly educated mothers were 0.42 higher (β=0.42) than those for students with relatively uneducated mothers. These numbers represent statistically signuificant values. Conclusion : Since health behavior appears to be directly proportional to socio-econmic status ofthe parent, active intervention may be required in order to improve the health behavior of children with poorly educated mothers and who live in independent or multi-household houses.

재가암 환자 통합건강증진 프로그램 개발 및 효과

윤희상,황은아 한국지역사회간호학회 2021 지역사회간호학회지 Vol.32 No.1

Purpose: This study aimed to develop an integrated health promotion program for cancer survivors residing in the community based on the shared care model, and evaluate its effectiveness. Methods: A quasi-experimental trial was conducted. The participants consisted of 35 cancer survivors with completed intensive cancer therapy at the cancer hospital. The intervention group (n=20) and the control group (n=15) were recruited from among a district home cancer patient registrations. The intervention group participated in an integrated health promotion program based on the MAPP (Mobilizing for Action through Planning and Partnership) development process. The program consisted of physical, psycho-social and body image units. The participants were assessed before the program, and immediately after the program. Data were collected between July 1 and September 2, 2018 using FACT-G quality of life (QOL), distress thermometer (DT), and resilience. The data were analyzed by performing a x2 test, Fisher’s exact test, Mann-Whitney test, and ranked ANCOVA using SPSS. Results: The intervention group reported a higher QOL overall and significantly higher social/family well-being than the control group. Distress was significantly lower in intervention group than in the control group. Resilience had no significant difference between the two groups. Conclusion: These findings indicate that the integrated health promotion program base on the shared care model and MAPP development process could be effective intervention for improving social/family well-being and the QOL, and reducing distress of cancer survivors at home. Community health center nurses need to provide intervention to support self-care competency for cancer survivors’ comprehensive care with physical, psycho-social, and body image to help them adjust their life to a moderate risk group in the community.

도체의 무조건 안정된 전자파 과도산란 해석

윤희상,이화용,정백호 湖西大學校 工業技術硏究所 2002 工業技術硏究所論文集 Vol.21 No.-

In the paper, we present a time-domain combined field integral equation(CFIE) formulation for analyzing transient electromagnetic responses from three-dimensional(3-D) closed conducting bodies. Instead of the conventional marching-on in time(MOT) technique, the solution method in this paper is based on the Galerkins method that involves separate spatial and temporal testing procedure. Triangular patch basis functions are used for spatial expansion and testing functions for arbitrarily shaped 3-D structures. The time-domain unknown current coefficient is approximated by using an orthonormal basis function set that is derived from the Laguerre functions. These basis function are also used as temporal testing functions. The method to be described results in very accurate and stable transient responses from conducting objects without an internal resonance. Detailed mathematical steps are included and representative numerical results are presented and compared.

單一펄스 幅變調 고주파인버터設計에 관한 硏究 : 高調波 최소화를 중심으로 in focusing to minimization of harmonics

尹熙相 湖西大學校工業技術硏究所 1998 工業技術硏究所論文集 Vol.17 No.-

재난보험제도 도입과 운영방안

윤희상,Yun, Hui-Sang 한국화재보험협회 2005 防災와 保險 Vol.110 No.-

화재, 폭발 및 붕괴사고 등 재난사고와 인명피해로 인해 재난보험 도입의 경제적 타당성과 효율적 운영방안에 대한 관심이 높아지고 있으며, 효율적인 재난보험 체제 구축의 도입이 대두되고 있다. 화재사고 시 대형피해가 예상되는 특수건물에 대한 사전 예빵기능 및 사후 보상 체계를 갖춘 '화보험' 의 바람직한 개정방향을 제시하는 것이야 말로 각종 재난 사고로부터 공공의 안녕을 지키는 든든한 토대가 될 것이다.