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서승범,이승환,한면수,신경진,이환영,이숭덕 대한법의학회 2011 대한법의학회지 Vol.35 No.2
The usefulness of DNA databases is well known. In Korea, many cases have been solved since the establishment of DNA databases in 2010. DNA profiles obtained from criminal evidence are analyzed and are kept in databases, and matching profile is searched. On the matching occasion, DNA databases can provide some investigative information. Close family members, for example father, son or brother, share more alleles than unrelated people. This genetic closeness can be searched using the so called familial searching, and many successful cases have been reported. Management of DNA databases including familial searching needs continuous monitoring and control, especially from ethical view points. Many different views for familial searching have been presented, and each country running DNA databases has their own different policies. We present the utility, approaches and different policies of familial searching as well as arguments for and against familial searching. We also suggest that our appropriate guidelines be mandatory and a proper administrative process be prepared for the start of familial searching.
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서승범,강연식 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.2
This paper proposes a novel multiple clue-based filtration algorithm (MCFA), which is developed to detect lane markings on roads using camera vision images for autonomous mobile robot navigation. The main goal of the algorithm is the robust estimation of the relative position and angle of the lane in the image by using multiple clues based on different characteristics of the lane. In particular, robustness against environmental changes is enhanced greatly since a dynamic model of the lane, be-sides static features of the lane such as color, intensity, etc., is incorporated for reliable estimation. The efficiency of the algorithm is verified through mobile robot experiments under various extreme illumi-nation conditions in outdoor environments. The increased robustness performance enables reliable closed-loop control of a mobile robot that operates in a variety of navigation-related missions.
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전완부 후골간 동맥 유리피판술을 이용한 안면부 조직 결손 재건 치험례
서승범,이상원,안태황,정성균,김창현,Seo, Seung Bum,Lee, Sang Won,An, Tae Whang,Jung, Sung Gyun,Kim, Chang Hyun 대한미세수술학회 2000 Archives of reconstructive microsurgery Vol.9 No.2
With esthetic concern in the reconstruction of skin and soft tissue defects of face, the use of local flap has been the method of choice. However, when there is extensive tissue loss in the face, local flaps do not provide satisfactory results. The amazing development of microsurgical technique has decreased the percentage of free flap failure, thus making free flap use in reconstruction of facial soft tissue defects. Many free flaps has been applied for reconstruction of face defects. Especially, the radial forearm flap has numerous advantages with which facial reconstruction is made possible. But, its disadvantages are ; the sacrifice of one major artery supplying the hand and donor site complications. In order to circumvent these disadvantages, we employed posterior interosseous artery(PIA) forearm free flap for the reconstruction of the face defects. The posterior interosseous forearm island flap was first described by Zancolli and Angrigiani(1985). Currently, the PIA island flap and free flap have been used for hand reconstructions. The disadvantages of the PIA flap are ; the small caliber of the pedicle, different locations of the perforating branches, and the proximity of the motor branch of the radial nerve. But, its advantages lies in preserving the major artery of the hand, minimal donor site morbidity, and fairly well matched skin texture and color, and that the flap volume is sufficient, not too bulky with convenient handling. By using this flap, we performed 1 case of tumor resection and 1 case of traumatic defect. From our experiences we conclude that it is one of many useful methods in the reconstruction of the skin and soft tissue defects of the face. We also have discussed advantages and some limitations of various free flaps for reconstruction of the face.
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서승범,이창섭,김동현 한국회계정보학회 2023 재무와회계정보저널 Vol.23 No.3
[연구목적]본 연구는 기업의 전략적 일탈 수준에 따른 연구개발비 행태를 실증적으로 검증하였다. [연구방법]Anderson et al.(2003)에 기반한 연구모형을 설정하여, 2001년부터 2022년까지 국내 상장기업을 대상으로 실증분석을 수행하였다. [연구결과]실증분석 결과, 전략적 일탈 기업의 연구개발비에서 하방탄력적인 행태가 관찰되었다. 이는, 전략적 일탈 수준이 높은 기업일수록, 전기 대비 당기 매출 성과가 좋지 않은 상황에서 연구개발비를 과도하게 축소하려는 경향이 크다는 것을 의미한다. 즉, 전략적 일탈 기업의 경영자는 현금보유수준을 높이기 위해, 대부분 당기 비용으로 회계처리가 되는 연구개발비를 대폭 절감하려는 유인이 있다고 해석된다. 전기 대비 당기 매출액 성과가 감소하는 상황에서 전략적 일탈 수준이 높은 기업이 연구개발비를 과도하게 절감하는 행태가 있음을 보고한 본 연구결과는 기업의 전략적 일탈이 자본시장에서 불확실성 또는 위험으로 평가될 수 있다는 선행연구의 주장을 뒷받침한다. [연구의 시사점]본 연구는 국내 상장기업을 대상으로 연구개발비 행태를 전략적 일탈 수준에 따라 변동될 수 있음을 검증하였다는 데 공헌점이 있을 것이다. 특히, 기업의 전략이 연구개발비 관련 경영자의 의사결정에 유의미한 영향을 줄 수 있으며, 전략적 일탈이 기업성과의 불확실성 및 위험을 높일 수 있음을 시사한다. [Purpose]This study empirically examines the cost behavior of R&D expenditures according to the level of strategic deviance of companies. [Methodology]In this study, we set up a research model based on Anderson et al.(2003) and conduct an empirical analysis on Korean listed companies from 2001 to 2022. [Findings]As a result of empirical analysis, we find anti-stickiness cost behavior in R&D expenditures from strategic deviance companies. This means that the higher the level of strategic deviance, the greater the tendency to excessively reduce R&D expenditures if the current sales is weaker compared to the previous year. In other words, it is interpreted that managers of strategic deviance companies have an incentive to significantly reduce R&D expenditures, which are mostly accounted for at current expenses, in order to increase the level of cash holdings. [Implications]This study will contribute to verifying that the cost behavior of R&D expenditures can change depending on the level of strategic deviance for Korean listed companies. In particular, it suggests that corporate strategies can have a significant impact on the decision-making of managers related to R&D expenditures, and that strategic deviance can increase uncertainty and risk of corporate performance.
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온라인 쇼핑몰 택배 서비스 품질 기대치에 대하여 제품 종류가 미치는 영향에 관한 연구
서승범,김승범,이진표 한국SCM학회 2020 한국SCM학회지 Vol.20 No.1
The importance of delivery service has increased as the online shopping gained popularity. As the service located in the last phase of the customer purchase experience in online shopping, delivery service had been verified to affect the customer satisfaction and the performance of the company. Following the framework of SERVQUAL where a service quality is defined as the difference between the customer expectation and experience, more information on customer expectation can enhance more efficient utilization of a limited resource by service-level-differentiation. Our work departs from usual approach where customers themselves are categorized and differentiated and we focus on how product category affects service expectation. The hypothesis that different kinds of products entails different level of service expectation is imposed and tested. Especially, we observed that service expectations on each of SERVQUAL elements are dependent on the product category. The empirical results suggest the need of service-level-differentiation on the product category.
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