http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
단단 축류압축기 유동해석에 대한 k-w 난류모델의 응용
이준석,김광용,Lee, Joon-Suk,Kim, Kwang-Yong 한국유체기계학회 2000 한국유체기계학회 논문집 Vol.3 No.3
A numerical study based on the three-dimensional thin-layer Navier-Stokes solver is carried out to analyze the flowfield through a single stage transonic compressor. Explicit fout-step Runge-Kutta scheme with spatially variable time step and implicit residual smoothing is used. The governing equations we discretized with explcit finite difference method. Mired-out average method is used at the interface between rotor and stator. And, an artificial dissipation model is used to assure the stability of solution. The results with k-w turbulence model were compared to the results with Baldwin-Lomax model, and physical phenomena of transonic compressor are presented. The two turbulence models give the results that show reasonably good agreements with experimental data.
한방병원에 내원한 위마비 및 비위마비성 기능성 소화불량증 환자에 대한 위 운동성 및 임상적 속성에 관한 연구
이준석,이선령,엄국현,김현경,장선영,유종민,김진성,류봉하,류기원,윤상협,Lee, Joon-Suk,Lee, Seon-Young,Eom, Guk-Hyeon,Kim, Hyun-Kyung,Jang, Sun-Young,Ryu, Jong-Min,Kim, Jin-Sung,Ryu, Bong-Ha,Ryu, Ki-Won,Yoon, Sang-Hyub 대한한방내과학회 2005 大韓韓方內科學會誌 Vol.26 No.4
Little is known concerning the pathophysiology and symptomatology of gastric dysmotility of patients who have sought treatment in eastern traditional medicine. The aim of this study was to investigate gastric electrical activity and clinical characteristics between gastroparesis and non-gastroparetic functional dyspepsia(FD) and assess the necessity to distinguish them for eastern traditional medical treatment. 60 patients were surveyed by questionnaire. Gastric electrical activity was recorded and analyzed using electrogas-trography. Patients were divided into gastroparesis and non-gastroparetic FD by 1.0 of power ratio. Healthy persons were used as reference. Postprandial normogastria of gastroparesis decreased and that of non-gastroparetic functional dyspepsia increased compared before and after meals. Suggested causes of onset were the meat diets that most patients were on in the gastroparesis group, and that drugs that patients in the non-gastroparetic FD group were taking. Distribution of main symptom was equally regular in patients with gastroparesis, but patients with non-gastroparetic FD showed mainly upper abdominal pain and fullness. Values for the gastroparesis group were double those for the non-gastroparesis FD group in frequency of upper GI endosopic examination. Results suggest that effective application of eastern traditional medical treatment requires that first a clear distinction be made in state of gastric dysmotility and clinical characteristics of gastroparesis and non-gastroparesis FD when treating dyspepsia.
흰쥐의 위(胃) 배출능(排出能)에 대한 반하사심탕(半夏瀉心湯)의 효능(效能)
이준석,김진성,류봉하,윤상협,Lee, Joon-Suk,Kim, Jin-Sung,Ryu, Bong-Ha,Yoon, Sang-Hyub 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.2
Backgrounds & Objectives: Banhasasimtang granule(BHSST) has been used for the treatment of functional dyspepsia regarded as one of the gastric dysmotility disease. but its mechanisms of action are not well known yet: So we investigated the effects of BHSST on gastric emptying and its mechanisms of action in rats. Methods: Gastric emptying was measured by glass beads(1mm in diameter) expelled from the stomach for 60 min after administration of normal saline(NS) or BHSST 31mg/kg or 93mg/kg in rats. And by the same method gastric emptying was measured after administration of NS or BHSST 93mg/kg in rats treated with atropine sulfate(1mg/kg, s.c.), quinpirol HCI(0.3mg/kg, i.p.), NAME(NG-nitro-L-arginine methyl ester, 75mg/kg, s.c.) or cisplatin(10mg/kg, i.p.) to make delayed gastric emptying. Results: BHSST 93mg/kg improved gastric emptying more than NS or BHSST 31mg/kg(p=0.016). Under the delayed gastric emptying, BHSST 93mg/kg improved gastric emptying in the group treated with NAME$(5.00{\pm}3.101\;vs\;9.00{\pm}3.51,\;p\;=0.046)$, but aggravated it With atropine sulfate$(5.71{\pm}3.45\;vs\;2.57{\pm}1.62,\;p\;=0.050)$ and cisplatin$(12.7{\pm}2.29\;vs\;8.57{\pm}5.06,\;p\;=0.072)$. Conclusions: BHSST improves the gastric emptying through cholinergic and 5-hydroxytryptamine 3 receptors. Especially it is effective to improve gastric emptying delayed by NAME. So we expect that it would be effective in functional dyspepsia with impaired reservoir functions such as gastric adaptive relaxation.
2차원 관성 컨트롤러를 이용한 제스처 인식에 대한 연구
이준석(Joon-Suk Lee) 한국엔터테인먼트산업학회 2008 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2 No.1
본 논문에서는 간단한 계산식으로 시스템에 부하를 주지 않고, 실시간 처리가 가능한 유클리디안 거리를 이용한 제스처 인식 시스템을 구현하였다. 구현된 제스처 인식 시스템의 성능을 확인하기 위하여 30회의 제스처 입력 실험을 진행하였고, 시스템에 대하여 잘 알지 못하는 5명의 사용자를 대상으로 간단한 사용법을 설명한 후 10회씩 입력 테스트를 수행하였다. 그 결과로 평균 84.48%의 인식률을 보였다.
이준석 ( Joon-suk Yi ),유재연 ( Jae-yeon Yoo ) 한국특수교육문제연구소 2004 특수교육저널 : 이론과 실천 Vol.5 No.3
이 연구에서는 바인랜드 적응행동척도를 국내에서 표준화한 이화-바인랜드 적응행동검사를 사용해서 적응행동의 이론적 구조에 대한 탐색적 요인분석과 확인적 요인분석을 실시하였다. 하위영역별로 탐색적 요인분석을 실시한 결과, 요인 수는 1개가 적합한 것으로 나타났다. AMOS를 사용하여 단일요인 모형과 3요인 모형에 대해 χ2 검증, χ2 차이 검증을 실시하였다. 또한 대안적 적합도 지수로서 χ2/df 비, GFI, AGFI, NFI 등을 사용하였다. 단일요인 모형 및 3요인 모형의 자료에 대한 적합도는 양호한 것으로 나타났다. 확인적 요인분석에서 검증된 두 모형들중 어느 모형이 더 적합한 지를 검증하였더니 단일요인 구조모형에 비해 3요인 구조모형은 간명정도는 덜하지만 적합도 차이에서는 훨씬 좋은 모형으로 나타났다. The purpose of this study was to examine the theoretical factor structure of adaptive behavior using exploratory and confirmatory factor analysis with EWHA-VABS (EWHA-Vineland Adaptive Behavior Scales). Exploratory factor analysis of subscale variables produces one factor solution. AMOS 5 was used for confirmatory factor analysis. The χ2 tests of fits of one factor model, three factor model to the observed data and χ2 difference tests between one factor model and three factor model were conduced. A ratio of χ2 to df, GFI, AGFI, NFI were used for alternative goodness-of-fit index considering for the possible impact of sample size on χ2 tests. The goodness of fit of one factor model and three factor model to the model reproduced by empirical data were favorable. Three factor model was less parsimonious than one factor model, but the former was more fitted than the latter.