검진프로세스의 개선으로 업무효율 향상

김원술,황혜숙,박미란,견미경,김선희,김영희,박순화,문혜향,김연선,이인혜,최태성 한국의료QA학회 2009 가을학술대회 Vol.2009 No.3

장기계측에 의한 2MW급 풍력발전 타워구조물의 동특성 평가

김원술,이진학,이충기,김석현 한국복합신소재구조학회 2017 복합신소재구조학회 학술발표회 Vol.2017 No.04

This study investigates dynamic characteristics of a 2MW wind turbine structure by long-term response monitoring with accelerometers, tiltmeter and strain gauges. The object wind turbine structure is located in Jeju Island, Korea. The natural frequency and damping ratio were evaluated by least-square frequency domain decomposition and random decrement technique using acceleration response data. As a result, it was found that natural frequencies with 1st, 2nd and 3rd modes, and blade passing frequencies with 1P, 2P and 3P were clearly showed from power spectral densities of acceleration reponses. Furthermore, 1st model frequencies were almost constant with increase in standard deviations of acceleration responses. Another notable observation was that when standard deviations of acceleration responses were small, damping ratios showed to diverge. However, when standard deviations of acceleration responses had large values, damping ratios were converged to about 0.5%.

부산지역 일부 성인의 B형과 C형 간염의 유병률에 관한 연구

김원술,담도온,신해림,정갑열,김준연 釜山醫師會 1995 釜山醫師會誌 Vol.31 No.5

풍력발전 타워 구조 건전성 모니터링 기술의 소개

김원술 한국구조물진단유지관리학회 2016 한국구조물진단유지관리공학회지 Vol.20 No.3

도시 생태공원의 풍환경 평가 적용에 관한 고찰

김원술,정일원,권지혜 한국습지학회 2019 한국습지학회지 Vol.21 No.5

City parks play an important role in reducing the air pollution and mitigating the city heat island effect caused by global warming. However, from July 2020, restricted parks over 20-year will be partially lifted due to sunset regulation on parks. As a result, the government and local governments have been making efforts to revitalize parks, such as creating ecological parks and securing park sites. However, building winds generated by high-rise buildings constructed around ecological parks in the city may cause discomfort to pedestrians and threaten the ecosystems of plants and animal that live in ecological parks. There are no clearly proposed as standards for wind environment assessment in Korea, but also it has been rarely studied on pedestrian wind environment. In this study, wind environment studies have been reviewed to find the important parameters related to wind environment assessment. Further, wind climate analysis using wind data obtained by Seoul meterological station was performed to examine the possibility of applicability of the wind environment assessment on the city ecological parks. 도시공원은 지구온난화와 대기오염을 줄여주고 열섬현상을 완화시켜주는 중추적인 역학을 하고 있다. 그러나 도시공원 일몰제에 따른 2020년 7월 이후 도시공원 제한이 일부 해제될 예정이다. 이에 따라 정부와 지자체는 공원부지 확보와 더불어 생태공원 조성 등 공원 활성화를 위한 노력을 기울이고 있다. 그러나 도시공원 주변에 건설되고 있는 고층건축물에 의해 발생하는 빌딩풍은 보행자에게 불쾌감을 유발할 수 있고, 생태공원에 서식하고 있는 동·식물의 생태계를 위협할 수 있다. 우리나라의 풍환경 평가에 대한 기준은 명확하게 제안된 바가 없으며, 관련 연구 또한 찾아보기 힘들다. 따라서 본 논문에서는 국외풍환경 평가기준 및 관련 연구를 검토하여, 풍환경 평가 기준의 중요 인자를 도출하고, 국내 기상관측자료를 이용한 풍환경평가에 적용 가능성을 검토하였다.

개인 소음폭로량과 청력손실에 관한 추적조사

김원술,홍영습,김양석,이상주,박경일,정갑열,김준연,Kim, Won-Sool,Hong, Young-Seoub,Kim, Yang-Seak,Lee, Sang-Ju,Park, Kyung-Il,Jung, Kap-Yull,Kim, Joon-Youn 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.2

For the purpose of presenting the basic data for the establishment of control measures on the long-term noise exposed workers, this study was carried out on the relationship between personal noise exposed dose and hearing loss on the 67 male workers whose hearing threshold had exceeded 40 dB in 4,000 Hz, from 1990 to 1992. Conclusively, the level of hearing loss was significantly related to personal noise exposed dose in follow-up period. We considered that personal noise exposed dose which was measured by the personal noise dosemeter was more efficient rather than the noise level of workplace for the evaluating the long-term change of hearing acuity. And although in the case of not-diagnosed as noise induced hearing loss. it was suspected that the active control programs such as improvement of noisy environment or early transfer to proper workplace were needed on the workers who exposed with over 90 dB in personal noise exposed dose.

휴대용폐활량계를 이용한 한국인의 정상 폐기능 예측치와 관련요인에 관한 연구

김원술,김병권,김준연 東亞大學校 大學院 2002 大學院論文集 Vol.27 No.-

This study was carried out to determine the normal predictive values of pulmonary function and related factors in Korean adults using portable spirometer. Author measured the FVC, FEV_1, MMF, and surveyed body height, body weight, BMI ad smoking history. Study group was total 9,987 (male 5,775, female 4,212) who were sampled from periodic health check-ups at a hospital in Po-hang city. The results of this study were summarized as follow; 1. FVC in male and female was 4.27±0.52L and 3.11±0.52 L. FEV_1 in male and female was 3.62±0.49 L and 2.62±0.47 L. MMF in male and female was 4.01±0.51 L and 2.86±0.48 L, respectively. 2. In correlation analysis, FVC, FEV_1 and MMF showed positive correlation with body height and body weight, and negative correlation with age, BMI and smoking history (pack-years). 3. The prediction equation for FVC was 0.0418 × body height (㎝) + 0.0042 × age (years) - 0.0117 × smoking (pack-years) - 2.8918 in male, and 0.0863 × body height (㎝) - 0.0108 × age(years) - 10.3048 in female. 4. The prediction equation for FEV_1 was 0.0429 × body height (㎝) + 0.0068 × age (years) - 0.0133 × smoking (pack-years) - 3.65306 in male, and 0.0798 × body height (㎝) - 0.0083 × age(years) - 9.776 in female. 5. The prediction equation for MMF was 0.0437 × body height (㎝) + 0.0054 × age (years) - 0.0137 × smoking (pack-years) - 2.9812 in male, and 0.0840 × body height (㎝) - 0.0093 × age(years) - 10.1732 in female.

나선형 초고층건물의 공력불안정 진동과 공력감쇠에 관한 연구

김원술,아키히토 요시다,타무라 유키오,이진학,Kim, Wonsul,Yoshida, Akihito,Tamura, Yukio,Yi, Jin-Hak 한국전산구조공학회 2016 한국전산구조공학회논문집 Vol.29 No.1

본 논문에서는 변위응답 및 가속도 응답의 저감 효과에 있어서, 유리한 형상인 $180^{\circ}$ 나선형(Helical $180^{\circ}$) 초고층건물을 대상으로 풍진동실험을 수행하여 나선형 초고층건물의 공력불안정 진동 특성 및 공력감쇠 특성을 조사하였고, 정방형 초고층건물의 결과와 비교분석 하였다. 본 연구에서의 공력감쇠율은 RD법(random decrement technique)을 이용하여 평가하였다. RD법에 의해 평가된 공력감쇠율은 기존문헌 및 준정상가정이론 결과와 비교 검증하였다. 실험결과, 공력진동 실험결과 $180^{\circ}$ 나선형모형의 풍직각방향에 대한 공력불안정 진동은 발생하지 않는 것이 확인되었다. 정방형과 $180^{\circ}$ 나선형 형상에 대한 공력감쇠율을 살펴보면, X방향에 대한 공력감쇠율은 무차원 풍속이 증가와 비례하여 점진적으로 증가하는 경향이 나타났다. 반면, Y방향에 대한 공력감쇠율은 정방형모형과 매우 다른 양상이 나타나는 것을 알 수 있었다. In this paper, aeroelastic instability and aerodynamic damping ratio of a helical $180^{\circ}$ model which shows better aerodynamic behavior in both along-wind and crosswind responses on a super tall building was investigated by an aeroelastic model test, and the aerodynamic damping ratio was evaluated from the wind-induced responses of the model by using Random Decrement Technique. Aerodynamic damping ratios evaluated in this study were verified through comparison with previous results obtained by quasi-steady theory. As a result, the aeroelastic instability of the helical $180^{\circ}$ model in crosswind direction were not occurred for any conditions with increasing the reduced wind velocity while the square model generally encounters aeroinstability due to the vortex shedding. The aerodynamic damping in along-wind direction for the helical $180^{\circ}$ and the square model increased monotonically both with reduced wind velocity, i.e., there is no relation with modifications of building shapes. On the other hand, in crosswind direction, the characteristics of aerodynamic damping ratio with reduced wind velocity for helical $180^{\circ}$ model were quit different from those of the square model.

인접건물에 의한 고층건축물의 피크국부풍압 분포 I - 피크풍압분포 및 풍압파워스펙트럼 중심으로 -

김원술,김윤석,타무라 유키오,요시다 아키히토 한국풍공학회 2011 한국풍공학회지 Vol.15 No.1

Local peak pressures between two buildings were studied by using wind tunnel experiments for various locations and height ratios of an interfering building and wind directions. The measured local peak pressure coefficients were compared to those obtained previously from a study on an isolated building. The experimental results have been examined and presented from the viewpoint of cladding design. The results show that at wind direction θ=135˚, minimum peak pressure coefficient on the front surface of the principal building with the interfering building for H_r≥1.5 at (S_x,S_y)=(1.5B,0) tends to increase generally and the smallest values of minimum peak pressure coefficients on the front surface of the principal building were -4.7(H_r=1.5), -5.7(H_r=2.0), while the smallest value of minimum peak pressure coefficient on the isolated building was -3.5. It can be explained by the fact that an increase in energies is associated with the reattaching shear layers on the principal building caused by high turbulence, thus significantly increasing the suction. 본 연구에서는 풍동실험을 통해 인접건축물의 다양한 높이비, 위치와 풍향에 따른 고층건축물에 작용하는 피크풍압계수에 대하여 조사하였다. 그리고 피크풍압계수는 Cook and Mayne의 제안식을 이용하여 산출하였다. 실험결과는 우선적으로, 인접건축물의 유무에 따른 최대 및 최소풍압계수의 분포도를 통해 비교 분석하였다. 풍동실험결과 풍향 135도에서 인접건축물의 높이비가 H_r≥1.5이고, (S_x,S_y)=(1.5B,0)에 위치할 때, 대상건축물의 정면에 작용하는 최소풍압계가 단독건축물에 작용하는 최소풍압계수(-3.5)에 비해 전반적으로 크게 나타났으며, 최소풍압계수의 최소값은 정면의 최상부 코너 부근에서 -4.7(H_r=1.5), -5.7(H_r=2.0)으로 나타났다. 본 연구의 결과는 CFD 해석 결과의 정당성 입증과 두동 이상으로 이루어진 고층건축물의 초기설계단계에서 상호간섭효과로 인한 외장재용 풍하중을 대략적으로 평가하는데 유용하게 사용할 수 있을 것이다.

한국인 직장성인과 그 배우자의 Aplipoprotein A-I & B 분포

김원술,김동일,서병성,Kim, Won-Sool,Kim, Dong-Il,Suh, Byung-Sung 대한예방의학회 2007 예방의학회지 Vol.40 No.1

Objectives : This study was performed to investigate the distribution of apolipoproteins A-I and B among Korean employees and their partners. Methods : The study population consisted of 7,633 men and women (4,578 men and 3,054 women) residing in Seoul and Kyung-gee Do, with an average age of $43.5{\pm}8.3$ years. Blood samples were collected following at least 12 hours of fasting. Apolipoproteins A-I and B were measured using a Behring Nephelometer analyzer. The body mass index (BMI) for each participant was calculated as weight (kg) divided by height squared $(m^2)$. Information on health-related behaviors such as exercise, alcohol intake, and smoking habits was collected through self-administrated questionnaires. Results : The mean concentrations of Apo A-I were $132.6{\pm}22.3mg/dL$ and $142.9{\pm}24.8mg/dL$ in the men and women, respectively. The concentration of Apo A-I increased significantly across all age categories of men. The mean concentrations of Apo B were $101.7{\pm}23.2mg/dL$ and $87.8{\pm}23.5mg/dL$ in the men and women, respectively, and Apo B increased significantly across all age categories for both the men and women. Exercise and BMI were major determinants for Apo A-I and B levels. The 10th percentile of Apo A-I concentration was 109 mg/dL in the men and 113 mg/dL in the women, and the 90th percentile of Apo B concentration was 131 mg/dL in the men and 118 mg/dL women. Conclusions : For the prevention of coronary artery disease, we recommend that for individuals in the 10th percentile of concentration for Apo A-I and the 90th percentile of concentration for Apo B, active preventive interventions such as weight loss and exercise should be taken. This study, within its limitations, may be useful for evaluating apolipoprotein A-I and B concentrations in Korean adults.