乙巳條約期 民族敎育의 사상적 의의와 한계

朴仁熙,金元述 경북대학교 평화문제연구소 1992 평화연구 Vol.17 No.-

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.

판별분석법을 이용한 관상동맥질환 고위험군의 예측

김성률,김기현,정갑열,김정만,박경일,김준연,이상주,김원술 동아대학교 부설 산업의학연구소 1995 산업의학연구소 논총 Vol.- No.2

The objective of this study is to predict the high risk group of coronary artery disease from body mass index, blood pressure, fasting blood sugar and serum lipids level using the method of discriminant analysis. Variables with significant difference between coronary artery disease group and normal group were HDS-C, LDL-C/HDL-C, LDL-C, and TG. But the acuity did not exceed 70% in any single variable. As the results of discriminant analysis, statistically significant discriminant variables were HDL-C, T-chol, FBS and TG. The discriminant equation was(Y) = -0.06759(HDL-C) + 0.01498(T-chol),+0.01923(FBS) - 0.01421(TG) + 0.5187, and the overall discriminant power using the above 4 variables was 79.3%

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.

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%.

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 예방의학회지 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.

직업성 암의 업무관련성평가를 위한 과거노출재구성

김원술,김수근 대한직업환경의학회 2014 대한직업환경의학회 학술대회 논문집 Vol.2014 No.11

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.

나선형 형상의 초고층건물의 공력감쇠의 특성

김원술,이진학,타무라유키오 대한토목학회 2017 대한토목학회논문집 Vol.37 No.1

Characteristics of aerodynamic damping ratios of a helical 180° model which shows better aerodynamic behavior in both along-wind and across-wind responses on a super tall building was investigated by an aeroelastic model test. The aerodynamic damping ratio was evaluated from the wind-induced responses of the model by using Random Decrement (RD) technique. Further, various triggering levels in evaluation of aerodynamic damping ratios using RD technique were also examined. As a result, it was found that when at least 2000 segments were used for evaluating aerodynamic damping ratio for ensemble averaging, the aerodynamic damping ratio can be obtained more consistently with lower irregular fluctuations. This is good agreement with those of previous studies. Another notable observation was that for square and helical 180° models, the aerodynamic damping ratios in along-wind direction showed similar linear trends with reduced wind speeds regarding of building shapes. On the other hand, for the helical 180° model, the aerodynamic damping ratio in across-wind direction showed quite different trends with those of the square model. In addition, the aerodynamic damping ratios of the helical 180° model showed very similar trends with respect to the change of wind direction, and showed gradually increasing trends having small fluctuations with reduced wind speeds. Another observation was that in definition of triggering levels in RD technique on aerodynamic amping ratios, it may be possible to adopt the triggering levels of “standard deviation” or “ times of the standard deviation” of the response time history if RD functions have a large number of triggering points. Further, these triggering levels may result in similar values and distributions with reduced wind speeds and either may be acceptable. 본 연구에서는 변위 및 가속도 응답의 저감 효과에 있어서, 유리한 형상인 180° 나선형(Helical 180°) 초고층건물을 대상으로 공력진동실험 수행하여 나선형 초고층건물의 공력감쇠율의 특성을 조사하였다. 공력감쇠율은 RD법(Random decrement technique)을 이용하여 평가하였다. 또한 RD법에서 부분 샘플의 개수와 초기 조건 값의 변화가 공력감쇠율에 어떤 영향을 미치는지 조사하였다. 실험 결과, 최소 2000개 이상의 부분 샘플을 이용하여 앙상블 평균을 적용하면 공력감쇠율의 불규칙한 변동의 폭을 줄일 수 있음을 검증했고, 기존 연구들과도 잘 부합되는 것을 알 수 있었다. 정방형 모형과 180° 나선형 모형의 공력감쇠율의 결과를 살펴보면, 풍방향 공력감쇠율은 건물의 형상이 다름에도 불구하고 무차원 풍속에 따른 공력감쇠율은 매우 유사한 경향을 보였다. 한편, 정방형 모형에 대한 풍직각방향의 공력감쇠율은 180° 나선형모형의 공력감쇠율의 특성과는 다른 양상을 보이는 것을 알 수 있었다. 특히 풍향 변화에 따른 180° 나선형 모형의 Y방향에 대한 공력감쇠율은 풍향의 변화와 상관없이, 전반적으로 0에 가까운 값을 갖는 경향이 나타났고, 무차원 풍속의 증가와 함께 변동의 폭은 작지만 점진적으로 증가하는 경향을 보였다. 초기 조건 값의 변화에 따른 공력감쇠율을 평가한 결과, 초기 조건 값을 “응답의 표준편차” 또는 RD 함수에 대한 최적화 “ ×응답의 표준편차”를 적용하여 평가한 공력감쇠율은 매우 유사한 결과 값과 분포를 보이는 것으로 나타났다.

검진프로세스의 개선으로 업무효율 향상

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