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복재 신경의 혈관망을 이용한 원위도상 도서형 신경피부 피판술
김상수,김동철,김용범,Kim, Sang-Soo,Kim, Dong-Churl,Kim, Yong-Bum 대한미세수술학회 2001 Archives of reconstructive microsurgery Vol.10 No.1
Introduction : The goal in the management of soft tissue injuries of the lower extremity is to obtain a closed stable wound as soon as possible. Recently, An anatomic study that has shown the role of the vascular axis that follows the superficial sensory nerves in supplying the skin developed the concept of a neuroskin island flap. It has been suggested that skin island flaps supplied by the vascular network of the saphenous nerve is one of the most reliable treatment to skin defect below the knee joint. Purpose : The aim of this article is to present a clinical experience of neuroskin island flaps based on the saphenous nerve and to estimate the clinical utilities of distally based saphenous neuroskin flap. Materials and Methods : From September 1995 to May 2000, a total 12 distally based neuroskin island flaps supplied by the vascular axis of the saphenous nerve were performed to cover defects in pretibial area below the knee. Result : flap necrosis due to reactivation of existing infection developed in a case that skin defect had been on infected nonunion site of tibia. But other 11 cases survived completely without any specific complications. Conclusion : The distally based neuroskin pedicled island flap using the vascular network of the saphenous nerve are versatile and reliable and especially indicated for limited defects in pretibial area below the knee joint which are not good indications for other better-known flaps.
Super-PVA LCD Technology for Wide Viewing Angle Performance
김상수,박진혁,김태성,Kim, Sang-Su,Park, Jin-Hyeok,Kim, Tae-Seong 한국정보디스플레이학회 2005 인포메이션 디스플레이 Vol.6 No.4
평판 디스플레이 장치가 LCD-TV에 사용되는 경우 시야각 특성과 동화상 성능은 보다 중요한 성능이 된다. 전반적인 LCD의 화질 특성은 시야각 특성과 동화상 응답 속도를 제외한 모든 부문에서 경쟁 기술보다 우세하다. 이러한 디스플레이의 시야각 특성을 개선하기 위해 LCD업계에서는 IPS, MVA, PVA 등 시야각 특성이 개선된 광시야각 액정 Mode를 개발하여 사용하고 있지만 여전히 LCD는 자발광 디스플레이에 비하여 측면 시인성 측면으로 열세에 있었다. 최근에는 LCD의 측면 시인성을 획기적으로 개선 할 수 있는 기술이 개발되어 더 이상 LCD-TV 응용에서 문제가 되지 않을 수준이 되고 있다. 본 논문에서는 여러가지 광시야각 액정모드 LCD의 측면 시인성 향상 기술에 대한 개략적인 사항을 알아보고, 그 중 Super PVA 액정 기술의 기본원리와 동작 방법에 대하여 상세히 기술하기로 한다.
김상수,구재관,이영호,김병걸,Kim, Shang-Shu,Ku, Jae-Kwan,Lee, Young-Ho,Kim, Byung-Geol 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.7
The new recycling technology for aged aluminum wires in overhead conductor has been carried out. The authors are attempting to develop remanufacturing method for them for more effective way of recycling in stead of its conventional remelting process. The new recycling technology for aged aluminum wire in overhead conductor was composed of four steps in different develop process, destranding process for conductor, surface cleaning process, welding process and drawing process for aluminum wire. This paper investigates the properties during recycle process of aged aluminum wire. The results of microscopic analysis and mechanical properties were discussed to underscore recycling aluminum wire. Various graphs are presented accompanied by discussion about their relevance on the process. In conclusion, we confirmed the possibility of remanufacturing technique by using new process.
정전분무에 의한 고점성 액체의 액적 생성 특성에 관한 실험적 연구
김상수,구본기,Kim, Sang-Su,Gu, Bon-Gi 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.4
Generation characteristics of electrospray droplets for highly viscous liquid have been investigated by measuring size distributions of droplets emitted from the Taylor cone using glycerol solutions with various conductivities. Because of very small volatility of glycerol, droplet sizes can be measured by an aerodynamic size spectrometer (TSI Aerosizer DSP) with negligible evaporation of droplets. For highly conducting and viscous liquid, the sizes of the droplets electrosprayed from the Taylor cone are found to be relatively insensitive to applied voltages and the electrosprays assisted by the corona discharge call produce monodisperse droplets as long as the corona intensity is not too high. Near the minimum flow rate where a liquid cone is stable, the spray tends to consist of a one -peak monodisperse distribution of drop lets. However, at high flow rates, the spray bifurcates into bimodal distributions, which are consistent with the result of the previous study for less viscous liquids than our liquids. For liquid flow rates (Q) below 1 nl/s, the measured droplet diameters by the aerosizer are in the range of 0.30 to 1.2 ${\mu}{\textrm}{m}$ for the glycerol solutions. The diameters of monodisperse droplets scale approximately with $r^*=Q_$\tau$(Q$\tau$){^1/3}$ where $r^*$ is a characteristic length and $\tau$is the electrical relaxation time of the fluid. However, when compared with several represe ntative scaling laws, the droplet diameters are two to six factors greater than those predicted by the scaling laws. This may be closely related to the combined effect of the much higher viscosity and the electrical charge on the jet breakup of glycerol so solution.
김상수,권미지,Kim, Sang-Su,Kwon, Mi-Ji 대한물리치료과학회 1995 대한물리치료과학회지 Vol.2 No.3
The purpose of study was that the functional gains achieved by stroke patients after rehabilitation in the acute phase have been documented. Sixty stroke inpatients who were at least 3.57 month postonset participated;32 males and 28 females;mean age, 57.4 years. By the classification of diagnosis, 20 subjects were cerebral infarction and 27 subjects were cerebral hemorrhage. Activities of daily living(ADL) performance was investigated using the Klein-Bell ADL Scale. ADL test was practiced within physical therapy room. The outcome variables were first analyzed using frequency statistics. The functional gains of the patients with sex and hemiplegic site were then using an ANOVA. Mean score of dressing, elimination, mobility, bathing/hygiene, eating, and telephone use, 26.6, 56.0, 41.4, 36.5, 82.0, and 56.7. Mean score of total, 43.0. There was no significant difference in sex and hemiplegic site.
남부 산간고랭지에서 쌀 품질 향상을 위한 적정 질소시비량
김상수,최원영,남정권,이준희,백남현,박홍규,최민규,김정곤,Kim, Sang-Su,Choi, Weon-Young,Nam, Jeong-Kwon,Lee, Jun-Hee,Back, Nam-Hyun,Park, Hong-Kyu,Choi, Min-Kyu,Kim, Chung-Kon 한국작물학회 2006 Korean journal of crop science Vol.51 No.suppl1
남부 산간고랭지에서 고품질 쌀 생산을 위한 질소시비량을 구명하고자 $2002{\sim}2004$년에 남부 산간고랭지 인 운봉에서 삼천벼를 공시하여 질소시비량에 따른 생육, 수량구성요소, 쌀 수량 및 품질 관련형질을 조사한 결과를 요약하면 다음과 같다. 1. 단위면적당 수수와 입수는 다비할수록 많았으나, 등숙비율과 현미천립중은 다비할수록 저하되었다. 2. 백미 외관상 품위에서 완전립 비율은 질소시비량이 많을수록 낮았고, 아밀로스 함량은 질소시비량 간에 별 차이가 없었으나, 단백질 함량은 질소시비량이 증가됨에 따라 다소 높아지는 경향이었다. 3. 쌀 수량과 완전미 수량은 질소 9 kg/10a 수준까지는 증수 되었으나 그 이상의 질소시비량에서는 수량 차이가 인정되지 않았다. 4. 따라서 남부 산간고랭지에서 완전미 수량, 완전미비율, 미질, 등숙비율 등을 고려한 품질향상을 위한 적정 질소시비량은 10a당 9 kg 내외로 판단된다. The effect of N-fertilization on yield, milling characteristics and quality of Samcheonbyeo, an early maturing rice variety, was investigated in 2002 to 2004. The study was carried out in the southern alpine area of Un-bong Sub-Station, Honam Agricultural Research Institute. Higher nitrogen levels increased number of panicle and grain per unit area, but lowed ripening rate and decreased 1,000-grain weight. Higher nitrogen levels of up to 90 kg/ha also increased head rice yield. A nitrogen level of 90 kg/ha was found optimal for increasing ripening rate and head rice yield, and rice palatability.
김상수,임상원,박용식,인호,Kim, SangSoo,Lim, SangWon,Park, Stanley,In, Hoh 한국시스템엔지니어링학회 2006 시스템엔지니어링학술지 Vol.2 No.1
According to the change of customer needs, integration with other systems, and the advent of new technology, it is inevitable for the existing system requirements to be requested to redesign. However, there are actually no methodologies and processes to be able to reorganize the existing requirements or integrate a number of requirements different from each other. The traditional requirements processes do not work when solving such problems. Thus, since the existing approaches to develop requirements are not helpful, many traditional requirement engineering processes can not help falling in Red Ocean. In this paper, in order to solve such the problems, we propose a novel requirements engineering process applying Blue ocean strategy which is used to open a non-competition market not discovered yet. Blue Ocean approach is a novel effective method to elicit and build up new requirements from customers. In order to accomplish the strategy, this paper presents a framework and processes to discover new perspectives and analyze the corresponding requirements. In addition, some pieces of case study are presented to introduce how our approach is applied to practical system developments and the evaluation analysis for how valid it is.