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김원석,김영석,전성배,전상호,이의석,장현석,권종진,임재석,Kim, Won-Seok,Kim, Young-Seok,Jeon, Seong-Bae,Jun, Sang-Ho,Lee, Eui-Suk,Jang, Hyon-Seok,Kwon, Jong-Jin,Rim, Jae-Suk 대한악안면성형재건외과학회 2012 Maxillofacial Plastic Reconstructive Surgery Vol.34 No.2
Purpose: The purpose of this study was to evaluate the expression of osteogenic genes associated with bone regeneration on anodizing titanium surface. Methods: $20{\times}20{\times}1$ (mm) commercially pure titanium plate was made, one group was pure titanium, second group was punched, and last group was punched and anodized by electrochemical method. Through the osteogenic cell culture model, the expression of extracellular matrix proteins, such as bone morphogenetic protein-2, bone sialoprotein, aggrecan, osteocalcin, Alkaline phosphatase, collagen I had been evaluated by Real-time polymerase chain reaction, and the morphology of growing cells was evaluated by scanning electron microscopy. Results: The attachment of mesenchymal stem cell was even and well-oriented on all Ti surfaces. The osteogene expression was increased on punching groups but, decreased on anodizing surfaces in 3 week samples. Conclusion: Punched anodizing Ti has possibility be using as a dental implant material, but further in vivo study would be needed.
김원석 ( Won Suk Kim ) 한국PR학회 2002 PR연구 Vol.6 No.2
Recently, there has been growing interest in public relations as a profession and college-level public relations education in Korea. The skills and techniques employed in the United States public relations have grown increasingly sophisticated in the past few decades, but the practive of public relations in Korea is still in the formative stage. Therefore, this study seeks to provide a descriptive overview of the contemporary Korea public relations industry and education. First of all, before reviewing Korean public relations practive, understand social, political and economic(SPE) contexts in KOrea according to Dr. Culbertson`s SPE Model. And briefly review about Public Relations history in Korea. The public relatiosn industry consists of three different key actors : public relations agencies, public relations media and public relations clients. Public relations industry : the structure and practice in Korea resembles the Japaneses system rather than that in the United States. Most of the public relations market is dominated by several major advertising agency-related public relatiosn divisions. All of these agencies are located within in-house advertising aencies supporting Korean Chaebols. And some leading independent public relations agencies have formed strategic alliances with western multinaitonal public relations firms. Korea had several major television and radio networks. They include the state-owned KBS and ten commercial broadcasters which encompass MBC and the SBS. The cable television services were operated by 29 program providers(PP) and 77 station operators(SO)`. Several satellite broadcasting services also starte in October 2001. In addition, Korea has 112 daily newspapers including those serving specialized audiences along with 1,999 weekly magazines, 2,319 monthly magazines and 1,245 magazines of other types. According to a survey by Kim, Korea haces several problems in public relatiosn education. First, most universities have focused on advertising education, even if their units are called Department of Advertising and Public Relations. Second, it is needed for unified organization is needed to integrate all public relations related organizations. There are several organizations representing their own interests. Third, committee is needed to define the body of knowledge in public relations. Really, there are a lack of qualified professors, textbooks and teaching materials, including relevant public relations cases.
김원석(KIM, Won Suk),정헌영(JUNG, Hun Young),이혜령(LEE, Hye Ryeong) 대한교통학회 2018 대한교통학회 학술대회지 Vol.79 No.-
본 연구에서는 기존에 진행되었던 국내 전기자동차에 관한 연구보다 더 세밀하게 그룹을 분류하여 개인의 특성과 가구차량보유구조 및 구매의향이 있는 경우 등 에 따른 차량 구매 선택요인을 찾고자 한다. 이를 위하여 SP선택문항을 만들어 설문조사를 실행하였으며, 설문조사결과를 토대로 수요예측모형을 STRADA3.0을 이용하여 구축하였으며, 이를 통하여 탄력성 분석을 실행하였다. 주요 결과는 다음과 같다. 첫째, 차량이 있는 가구의 경우 중요요인으로는 연료비와 충전시간, 주행가능거리 등과 같은 실제 사용에 있어 편의성과 관련된 요인이 탄력성이 높은 것으로 나타났다. 둘째, 차량이 없는 가구의 경우에는 차량구매가격이 탄력성이 높은 것으로 분석되었다. 마지막으로 도출된 연구결과는 향후 전기자동차 수요예측과 보급 활성화를 위한 기초적인 자료로 활용될 수 있을 것이라 사료된다.
3차원 그래픽 지오메트리 연산을 위한 벡터 지오메트리 엔진의 설계 (pp.52-54)
김원석(Won-suk Kim),정철호(Cheol-ho Jeong),이길환(Kil-hwan Lee),박우찬(Woo-Chan Park),한탁돈(Tack-Don Han),이문기(Moon-Key Lee) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ
3차원 그래픽 가속기는 지오메트리 처리(geometry processing)와 레스터라이져(rasterizer)로 구성된다. 본 논문에서는 지오메트리 처리를 고속으로 수행할 수 있는 벡터 형태의 처리 구조(VGE)를 제안하였다. 특히 기존의 부동소수점을 계산할 수 있는 구조에 4개의 FADD, FMUL, 128개의 벡터 레지스터를 추가하여 지오메트리 연산을 가속했으며 VGE와 비슷한 H/W 비용을 갖는 Hitachi의 SH4와 비교했을 때 평균 4.7배의 성능향상을 보였다. 또한 성능 평가를 위해 범용프로세서 시뮬레이터인 Simplescalar를 수정하여 시뮬레이터를 제작했으며 Viewperf Benchmark를 입력으로 사용하였다.