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컴파일시 생성된 여러개의 선형 순서를 가지는 AND / OR 프로세스 모델에 관한 연구
박승운(Seung Woon Park),김승범(Seung Beom Kim),맹승렬(Seung Ryoul Maeng) 한국정보과학회 1987 정보과학회논문지 Vol.14 No.2
본 논문에서는 AND/OR 프로세스 모델의 수행시 부담을 줄이기 위해 컴파일시에 수행 순서를 생성하도록 하였다. 가능한 입력 바인딩 패턴에 따라 heuristic한 규칙에 의해 여러개의 가능한 선형 순서가 만들어지며, 수행시에는 바디리터럴을 풀기위해 그중 하나가 선택된다. 각각의 선형 순서는 적합한 데이터 종속 관계를 만들어내기 때문에 거의 최적의 AND 병렬성을 추구할 수 있으며, 이것은 기존의 다른 컴파일 방식들보다 우수하다. 때로는 AND 병렬성이 제한되는 경우가 있으나, 수행시 부담을 줄임으로써 보상될 수 있다. 전방향 및 후방향 수행을 위한 수행시 제어도 간단한 자료 구조에 의해서 효과적으로 제어된다. The AND/OR process model is modified to reduce the runtime overhead in this thesis. In the proposed model, the run time overhead for literal ordering is reduced by generating the execution orders ill compile time. Several possible ordered lists are generated in compile time with several heuristic rules according to the possible input binding patterns and one of them is selected in run time to solve the body literals. Because each ordered list can generate the proper data dependencies, the heady optimal AND parallelism can be exploited, which is better than the other compile approaches. Though this approach may restrict AND parallelism in some cases, it can be compensated by reducing the run time overhead. The run time control for the forward and backward executions is managed simply and efficiently by a simple data structure.
터너증후군 환자의 대동맥 축착증을 스텐트 삽입술로 치료한 증례 1예
박승운 ( Seung Woon Park ),이한철 ( Han Cheol Lee ),이남희 ( Nam Hee Yi ),박인성 ( In Seong Park ),박치환 ( Chi Hwan Park ),유진석 ( Jin Seok Yu ) 대한내과학회 2015 대한내과학회지 Vol.89 No.3
Cardiovascular malformations, such as bicuspid aortic valve and coarctation of the aorta, are more prevalent in patients with Turner syndrome than in the general population. Here, we describe the case of a 35-year-old female with Turner syndrome who was admitted to our hospital with a fever caused by infective endocarditis. Aortic coarctation was diagnosed using computed tomography. The patient was treated with antibiotics and a stent was then implanted. Endovascular therapy using stents is a safe and effective treatment option for aortic coarctation in patients with Turner syndrome. (Korean J Med 2015;89:331-334)
쌍롤에 의한 박판주조시 열전달 특성에 대한 실험적 고찰
박승운,김기운,김유,Park, Seung-Woon,Kim, Ki-Woon,Kim, Yoo 대한기계학회 1997 大韓機械學會論文集B Vol.21 No.10
An Experimental investigation was carried out to examine the heat transfer characteristics of rapid cooling process by Twin-Roll. The experimental results were compared with numerical solutions. The measured temperature showed the about 3 % difference to the calculated results. But the cooling rate estimated by the microstructure interpretation method has much difference to the calculated results.
광주 지역에서 2018년 1월 측정한 초미세먼지의 오염 특성
유근혜,박승식,정선아,조미라,장유운,임용재,김영성,Yu, Geun-Hye,Park, Seung-Shik,Jung, Sun A,Jo, Mi Ra,Jang, Yu Woon,Lim, Yong Jae,Ghim, Young Sung 한국입자에어로졸학회 2019 Particle and Aerosol Research Vol.15 No.3
In this study, hourly measurements of $PM_{2.5}$ and its major chemical constituents such as organic and elemental carbon (OC and EC), and ionic species were made between January 15 and February 10, 2018 at the air pollution intensive monitering station in Gwangju. In addition, 24-hr integrated $PM_{2.5}$ samples were collected at the same site and analyzed for OC, EC, water-soluble OC (WSOC), humic-like substance (HULIS), and ionic species. Over the whole study period, the organic aerosols (=$1.6{\times}OC$) and $NO_3{^-}$ concentrations contributed 26.6% and 21.0% to $PM_{2.5}$, respectively. OC and EC concentrations were mainly attributed to traffic emissions with some contribution from biomass burning emissions. Moreover, strong correlations of OC with WSOC, HULIS, and $NO_3{^-}$ suggest that some of the organic aerosols were likely formed through atmospheric oxidation processes of hydrocarbon compounds from traffic emissions. For the period between January 18 and 22 when $PM_{2.5}$ pollution episode occurred, concentrations of three secondary ionic species ($=SO{_4}^{2-}+NO_3{^-}+NH_4{^+}$) and organic matter contributed on average 50.8 and 20.1% of $PM_{2.5}$, respectively, with the highest contribution from $NO_3{^-}$. Synoptic charts, air mass backward trajectories, and local meteorological conditions supported that high $PM_{2.5}$ pollution was resulted from long-range transport of haze particles lingering over northeastern China, accumulation of local emissions, and local production of secondary aerosols. During the $PM_{2.5}$ pollution episode, enhanced $SO{_4}^{2-}$ was more due to the long-range transport of aerosol particles from China rather than local secondary production from $SO_2$. Increasing rate in $NO_3{^-}$ was substantially greater than $NO_2$ and $SO{_4}^{2-}$ increasing rates, suggesting that the increased concentration of $NO_3{^-}$ during the pollution episode was attributed to enhanced formation of local $NO_3{^-}$ through heterogenous reactions of $NO_2$, rather than impact by long-range transportation from China.
액체 로켓용 충돌형 Triplet 인젝터의 미립화 특성에 관한 연구
박성영,김선진,박승운,김유,Park, Sung-Young,Kim, Seon-Jin,Park, Seung-Woon,Kim, Yoo 대한기계학회 1996 大韓機械學會論文集B Vol.20 No.3
An experimental investigation has been carried out to examine the influence of injector design variables and operating conditions on the resultant drop size for triplet impinging streams injectors. The variables studied in this investigation are pressure drop, impinging angle, orifice length to diameter ratio, and impinging point distance. Droplet-size data are obtained using water as the propellant simulant by Malvern Particle Analyzer System. Drop size decreases with increasing impinging angle and pressure drop while other injector parameters remain constant at the same point. But it is found that there is no noticeable droplet-size change which results from change in orifice length to diameter ratio or impinging point distance within the investigated range.
이남희 ( Nam Hee Yi ),박승운 ( Seung Woon Park ),박인성 ( In Seong Park ),박치환 ( Chi Hwan Park ),이충원 ( Choong Won Lee ) 대한류마티스학회 2015 대한류마티스학회지 Vol.22 No.1
Relapsing polychondritis is an uncommon disease associated with inflammation in cartilaginous tissues throughout the body, particularly affecting the cartilaginous structures of ears, nose, joints, and respiratory tract. Several autoimmune diseases, including vasculitis, are associated with the concurrent relapsing polychondritis. However, ankylosing spondylitis primarily affecting the sacroiliac joints and spine is rare in patients with relapsing polychondritis. We report on a 54-year-old man with concurrently relapsing polychondritis and ankylosing spondylitis. (J Rheum Dis 2015;22:56-60)
증례 : 순환기 ; 독사조신 복용 후 발생한 여성형유방증 1예
박인성 ( In Seong Park ),이남희 ( Nam Hee Yi ),박치환 ( Chi Hwan Park ),박승운 ( Seung Woon Park ),유진석 ( Jin Seok Yu ),정준훈 ( Joon Hoon Jeong ) 대한내과학회 2016 대한내과학회지 Vol.90 No.3
Doxazosin은 알파아드레날린길항제의 대표적인 약으로 전립선비대증에 아주 흔하게 사용되고 있다. 비슷하게 사용되는 finasteride, dutasteride와 같은 5-알파환원효소억제제는 여성형유방증, 유방통과 같은 부작용이 흔하게 보고되고 있으나 알파아드레날린길항제는 보고된 바가 국내에 아직 없다. 또한 알파아드레날린길항제는 약리 기전으로 보아 그러한 부작용을 의심하는 것이 쉽지 않다. 이에 doxazosin 사용 후 일측성의 여성형유방증과 유방통이 발생한 1예를 경험하였기에 국내 첫 번째 사례로 보고하는 바이다. Doxazosin is an adrenergic alpha-1 receptor antagonist used to treat lower urinary tract symptoms that are common in prostatic hyperplasia. To our knowledge, few cases of gynecomastia and mastodynia, as a complication of adrenergic alpha-1 receptor antagonist, have been reported to date; no cases have been reported in Korea. We describe a case involving a 78-year-old man treated for prostatic hyperplasia with 13 months of doxazosin. He complained about unilateral gynecomstia and mastodynia. Five months after the discontinuation of doxazosin, the gynecomastia was significantly improved. This is the first reported case of gynecomastia and mastodynia associated with doxazosin use in Korea. (Korean J Med 2016;90:239-242)