http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정상영,김신곤,양동호 대한혈관외과학회 1988 Vascular Specialist International Vol.4 No.1
An embolus is a blood clot or other foreign material in a vessel located distal to the place of origin of the clot or foreign material. Arterial embolectomy, designed to restore patency of an acute occluded vessel has great advance since Fogarty balloon catheter was introduced in 1963. At present, in spite of all these advances responsible for the current higher rate of limb salvage, limb loss and mortality rate are still high in a certain group of patient, and concept of arterial embolism and its management are still undergoing changes. Twenty one cases of arterial thromboembolism, which were seen during the periods of 4 years and 7 months from January 1983 to July 1987 at Chonnam National University Hospital, were studied and divided into two groups, good prognosis group and poor prognosis group according to the absence or presence of death and limb loss, and the prognostic factors were evaluated. The results were as follows; 1) The arterial embolism was most frequently seen in 5th decade in good prognosis group (41.6%) and 7th decade in poor prognosis group (44.5%). Male: female ratio were 8:4 in good prognosis group and 8:1 in poor prognosis group. 2) In good prognosis group, no identified diseases were seen in most cases (7 cases: 58.3%) and atherosclerotic heart disease was most common in poor prognosis group (4 cases:44,4%). 3) The most common clinical manifestation was pain in both groups. 4) Time interval from onset of symptoms to treatment; Within 1 day was most common in good prognosis group (5 cases; 41.7%) and over 1 month was most common in poor prognosis group (6 cases: 66.7%). 5) The most common site of embolism was femoral artery in both groups. 6) Operations were done in 15 cases, among them, 9 cases were good prognosis and 6 cases were poor prognosis. Most common anesthesia was local anesthesia in both groups. 7) The operative mortality was 20%.
컨조인트 분석을 이용한 관여도에 따른 한식당 선택 속성
정상영,정라나,Jung, Sang Young,Chung, Lana 한국식품조리과학회 2013 한국식품조리과학회지 Vol.29 No.5
The purpose of this study was to analyze the key factors considered important by customers in the selection of a Korean restaurant through the use of conjoint analysis techniques. A total of 400 questionnaires were distributed over a 2-week period in October 2011, of which 354 were completed (88.5%). Statistical analysis was then carried out using the Windows 18.0 Statistics package. The research was based on the analysis of two target areas - daily meals and special purpose meals. Responses were measured by using Zaichkowsky's Personal Involvement Inventory (PII) and a 7-point Likert Scale. Overall it was found that in all areas of the results regarding the involvement related analyses, daily meals scored lower than special purpose meals. This implied that the choice of daily meals is more applicable to customers with a low level of involvement, whereas high-involvement customers were more likely to focus on special purpose meals. The analysis of high-involvement customers revealed that the quality of food, price, service quality and physical environment, in order of priority, were the most important factors in selecting a restaurant. The use of the optimum attribute combination revealed the following results: delicious food (0.601); friendly staff (0.170); clean restaurant (0.191); price of 20,000 won (-0.513). Furthermore, low-involvement customers considered the following factors as important when selecting a Korean restaurant: quality of food, followed by price, physical environment and service quality in that order. In this instance, the optimum attribute combination showed the following outcomes: tasty food (0.645); friendly staff (0.418); clean restaurant (0.365); price of 5,000 won (-0.847). These results indicated the importance of developing a marketing plan which was based specifically on a customer's involvement level, focusing on their main selection criteria when choosing a Korean restaurant.
한화 무인잠수정 선수부 END CAP 구조의 다중해석 형식의 형상, 두께 최적설계
정상영,윤지영,이남재 한국방위산업학회 2011 韓國防衛産業學會誌 Vol.18 No.1
The prototype of Hanhwa AUV (Autonomous Underwater Vehicle) was developed to prepare future system developments in Hanwha Corporation. This paper presents the procedure and results of the structural design and analysis for the End Cap of Hanwha AUV. Several methodologies used for structural optimization were presented and applied to the design of the End Cap structure. Both shape optimization and thickness optimization were performed simultaneously. And because the FEM analysis model was used for structural optimization, design and analysis procedures were simultaneously conducted. Several analysis methods such as static analysis, buckling analysis, and normal mode analysis were used with procedure that was similar to the MDO (Multidisciplinary Design Optimization). The objective is to design the structural weight. The constraints are maximum displacement and maximum von Mises stress in static analysis, the buckling coefficient in buckling analysis, and lowest natural frequency in normal mode analysis. The design variable concerning thickness optimization is the thickness of the End Cap shell, as well as the depth of the End Cap concerning shape optimization. In thickness optimization, the optimization for variable thicknesses at the final shape iteration was performed, and we can see that the weight was significantly reduced.
정상영,박준식,김진국 한국과학기술원 반도체설계교육센터 2021 IDEC Journal of Integrated Circuits and Systems Vol.7 No.1
This paper proposes the integrated circuit (IC) within the active EMI filter (AEF). The fully-isolated feed-forward current-sense current-compensation (CSCC) structure of the AEF is also proposed to achieve the robust reliability from electromagnetic susceptibility (EMS) to the designed IC. The noise attenuation performance is analyzed, and the design guides for the proposed AEF with IC are developed. The designed IC is fabricated by 180nm BCD process. The noise attenuation performance and stability are experimentally validated by vector network analyzer (VNA) measurement.