• Bulletin of the Korean Chemical Society
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• 제30권8호
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• pp.1755-1759
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• 2009

Surface structure and molecular orientation of self-assembled monolayers (SAMs) formed by the spontaneous adsorption of tetrahydrothiophene (THT) and thiophene (TP) on Au(111) were investigated by means of scanning tunneling microscopy (STM) and carbon K-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy. STM imaging revealed that THT SAMs have a commensurate (3 ${\times}\;2\sqrt[]{3}$) structure containing structural defects in ordered domains, whereas TP SAMs are composed of randomly adsorbed domains and paired molecular row domains that can be described as an incommensurate packing structure. The NEXAFS spectroscopy study showed that the average tilt angle of the aliphatic THT ring and $\pi$-conjugated TP ring in the SAMs were calculated to be about $30^o\;and\;40^o$, respectively, from the surface normal. It was also observed that the $\pi$* transition peak in the NEXAFS spectrum of the TP SAMs is very weak, suggesting that a strong interaction between $\pi$-electrons and the Au surface arises during the self-assembly of TP molecules. In this study, we have clearly demonstrated that the surface structure and adsorption orientation of organic SAMs on Au(111) are strongly influenced by whether the cyclic ring is saturated or unsaturated.

• Journal of Korean Neurosurgical Society
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• 제64권4호
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• pp.631-643
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• 2021

Objective : Here, we evaluated whether cerebrospinal fluid (CSF) profiles and their changes after intraventricular chemotherapy for leptomeningeal carcinomatosis (LMC) could predict the treatment response or be prognostic for patient overall survival (OS) along with clinical factors. Methods : Paired 1) pretreatment lumbar, 2) pretreatment ventricular, and 3) posttreatment ventricular samples and their CSF profiles were collected retrospectively from 148 LMC patients who received Ommaya reservoir installation and intraventricular chemotherapy. CSF profile changes were assessed by calculating the differences between posttreatment and pretreatment samples from the same ventricular compartment. CSF cell counts were further differentiated into total and other based on clinical laboratory reports. Results : For the treatment response, a decreased CSF 'total' cell count tended to be associated with a 'controlled' increase in intracranial pressure (ICP) (p=0.059), but other profile changes were not associated with either the control of increased ICP or the cytology response. Among the pretreatment CSF profiles, lumbar protein level and ventricular cell count were significantly correlated with OS in univariable analysis, but they were not significant in multi-variable analysis. Among CSF profile changes, a decrease in 'other' cell count showed worse OS than 'no change' or increased groups (p=0.001). The cytological response was significant for OS, but the hazard ratio of partial remission was paradoxically higher than that of 'no response'. Conclusion : A decrease in other cell count of CSF after intraventricular chemotherapy was associated with poor OS in LMC patients. We suggest that more specific CSF biomarkers of cancer cell origin are needed.

• Asia Marketing Journal
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• 제15권4호
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• pp.223-241
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• 2014

In May 2012, the collaboration of Hana Bank, top financial service company, and SK Planet, top telecommunication service provider, introduced a new credit card that was filled with all-in-one benefits into the market. Leveraging strong infrastructure of two companies, each top in its own industries, the awareness and preference of 'Club SK Card' brand rapidly increased to about 25% in less than one year. Moreover, this new card was enthroned in the most sold credit card of year 2012, accounting for a market share of 7.2% in the credit card market and more than 80% in the mobile credit card market. To make these results possible, 'Club SK Card' marketing team developed an effective marketing communication strategy which followed the 6M model. The mission of the marketing communication strategy was simple and clear. It was to deliver the card's inherent strengths on consumer benefits that come from the support of subsidiary and affiliated companies of SK Planet. According to OK Cashbag data, the marketing communication team selected the appropriate target consumers and approached them directly, inducing actual purchase behavior. The target consumers received straightforward messages about 'Club SK Card' and were led to join in the new membership at their most frequently visited supermarket or franchise restaurant. The straightforward communication message embedded in an eye-catching commercial ad with a hook song accompanied with a dance was delivered via public media. The ad became so popular that many other television programs quoted or made parodies of the ad. Courtesy of the commercial ad, the brand name disseminated rapidly and widely among the public. In October 2012, an ingenious planning and persistent implementation of the communication strategy results 'Club SK Card' to be ranked top in brand awareness as well as advertising preference tests.

• Journal of Chest Surgery
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• 제54권2호
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• pp.99-105
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• 2021

Background: The number of heart transplantations (HTx) is increasing annually. Due to advances in medical and surgical support, the outcomes of HTx are also improving. Extracorporeal circulatory life support (ECLS) provides patients with decompensated heart failure a chance to undergo HTx. A medical approach involving collaboration among experienced experts in different fields should improve the outcomes and prognosis of ECLS-bridged HTx. Methods: From December 2003 to December 2018, 1,465 patients received ECLS at Samsung Medical Center. We excluded patients who had not undergone HTx or underwent repeated transplantations. Patients younger than 18 years were excluded. We also excluded patients who received an implantable durable left ventricular assist device before HTx. In total, 91 patients were included in this study. A multidisciplinary team approach began in March 2013 at our hospital. We divided the patients into 2 groups depending on whether they were treated before or after implementation of the team approach. Results: The 30-day mortality rate was significantly higher in the pre-ECLS team group than in the post-ECLS team group (n=5, 18.5% vs. n=2, 3.1%; p=0.023). The 1-year survival rate was better in the post-ECLS team group than in the pre-ECLS team group (n=57, 89.1% vs. n=19, 70.4%; p=0.023). Conclusion: We found that implementing a multidisciplinary team approach improved the outcomes of ECLS-bridged HTx. Team-based care should be adapted at HTx centers that perform high-risk HTx.

• 패션비즈니스
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• 제13권5호
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• pp.93-101
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• 2009

The purpose of this study was to examine the effects of PBL (Problem based-learning) on the social psychology of clothing course. Thirty-seven undergraduate university students completed a 15-week capstone course in a clothing and textiles department. Eighty-one percent of the participants were majoring in the clothing and textiles. The study was conducted two focus group interview with 37 undergraduate students. The participants demonstrated positive attitude toward the PBL (Problem Based Learning) in Social Psychology of Clothing course. The results showed that the students have more opportunities to practice collaboration within the team and to increase their self-esteem and self-confidence through the 15 week of teamwork. The participants were developed to express their opinion actively and solving the problem skills. Eighty percent of the instructors had a positive attitude toward the achievement of the course objectives. Seventy-five percent of the instructors expressed the difficulty of student's evaluation. Fifty-five percent of the instructors had a difficulty of development of module problems.

• 한국정보통신학회논문지
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• 제15권12호
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• pp.2575-2581
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• 2011

최근에 이르러 뇌에 대한 연구가 체계적으로 이루어지고 있으며 뇌파를 활용하기 위한 Brain-Computer Interface(BCI) 기술에 대한 연구가 활발히 진행되고 있다. 특히, BCI 기기를 활용한 기능성 게임 기술이 관심의 대상이 되고 있다. 본 논문에서는 미국 뉴로 스카이사의 마인드셋 SDK(System Development Kit)를 이용하여 집중도과평정도에 따라 협동심과 사회성을 길러주는 기능성 게임으로 기존의 1인용 게임과 차별을 둔 "2인용 협동 댄스게임" 구현을 제안한다. 이 게임은 일반인의 뇌 활성화 및 ADHD 아동과 경도인지장애를 보이는 노인 치료에 도움을 주고 청소년들의 게임문화에 대한 사회적 순기능 역할을 할 것으로 기대한다.

• 한국경영과학회지
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• 제39권3호
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• pp.93-115
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• 2014

In collaborative product development with multiple suppliers, buyers must manage the suppliers' activities. This empirical research investigates the performance impacts of three strategies that buyers use to manage suppliers who design interdependent components. These strategies are: Instructionism (giving clear instructions to suppliers), Teaming (forming an interactive development team with suppliers), and Delegation (transferring component development responsibilities to suppliers). Data were collected through a cross-industry web-based survey of buying firms in manufacturing industries whose products require multiple, interdependent components. A path analysis utilizing 318 survey responses indicates that Instructionism has a positive effect on design quality, and Teaming has a positive effect on design quality and component innovation. The use of Delegation is not related to any of the performance indicators. The practical implication of this research for product development managers is that both Instructionism and Teaming can be effective strategies. For the purpose of assuring design quality, a buyer should give clear instructions in detailed specifications or work closely with suppliers in development teams. If competitive priority is product innovativeness, however, the buyer should work closely with its suppliers during component development processes using a Teaming strategy.

• 한국전자거래학회지
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• 제16권1호
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• pp.71-100
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• 2011

IT 기술의 발전으로 시간적, 물리적 제약을 넘은 미래 인터넷 기술에 대한 사용자들의 기대가 커지고 있다. 이러한 요구를 충족시키기 위해 최근 새로운 개념으로 주목 받고 있는 것이 클라우드 컴퓨팅이다. 그러나 이러한 긍정적인 전망에도 불구하고 클라우드 컴퓨팅의 도입은 활발히 이루어지고 있지 않고 있는 실정이다. 따라서 본 연구에서는 클라우드 컴퓨팅 환경의 특성이 프로젝트 수행성과에 어떠한 영향을 미치는가에 대하여 살펴보았다. 본 연구는 기술적 도구로써 클라우드 컴퓨팅을 과업과 기술의 적합성 모형에 적용하여 클라우드 컴퓨팅 환경에서 개인이 프로젝트를 수행할 시에 나타나는 성과에 대하여 실증적인 연구를 하였다. 대학교 및 대학원에서 팀 단위의 프로젝트를 수행할 때, 클라우드 컴퓨팅의 가장 널리 보급된 형태인 GoogleDocs 및 웹하드에 대한 사용경험이 있는 응답자를 대상으로 설문을 수행하였다. 본 연구에서는 클라우드 컴퓨팅 환경에서 프로젝트를 수행한다는 행위에 중점을 두어, 접근성과 신뢰성을 적합성을 파악하기 위한 1차 요인으로 정의하여 프로젝트의 상호의존성과 개인의 특성이 적합성 및 활용을 통하여 성과에 어떤 영향을 미치는지를 분석하였다. 연구결과, 클라우드 컴퓨팅 환경은 팀 단위의 프로젝트 수행에 있어 적합한 도구라는 사실을 규명하였다. 본 연구는 초기단계의 클라우드 컴퓨팅에 있어 개인이 지각하는 적합성 및 성과를 규명함으로써, 협업에서의 클라우드 컴퓨팅의 긍정적인 영향에 대한 근거를 제시한다.

• 한국보육지원학회지
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• 제7권2호
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• pp.115-135
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• 2011

본 연구는 팀 구성원들과 관계를 형성하여 협동하는 능력을 길러주고, 자신과 타인에 대해 이해하고 신뢰가 바탕이 되어야 하는 예비유아교사들에게 스토리텔링 기법을 활용하여 협동학습 모형을 개발하고자 한다. 이러한 연구의 목적을 달성하기 위하여 문헌 및 사례연구를 통하여 스토리텔링기반 협동학습 모형 초안을 구안하고, 이를 현장에 적용하여 모형의 강점과 개선점을 중심으로 수정 보완하여 모형을 구안하였다. 도출된 모형의 초안은 P시 D대학 유아교육과 학생을 대상으로 6주에 걸쳐 현장적용 하였다. 그 결과, 협동학습에 대한 긍정적인 반응과 협동학습에 대한 재인식하기, 팀 구성원의 역할분담 재구성에 대한 필요성이 도출되었고, 이를 바탕으로 모형을 수정 보완하여 예비유아교사를 위한 협동학습 모형의 최종안을 구안하였다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.170-175
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• 2008

가상건설시스템 개발연구단은 국토해양부와 한국건설교통기술평가원의 지원 하에 설립되었다. 본 연구단은 건설프로젝트의 생산성 향상, 고 부가가치 사업 창출, 해외건설시장에서의 경쟁력 확보라는 목표를 가지고 연구를 수행 중에 있다. 가상건설 시스템은 건축물의 전 생애주기에서 발생되는 정보를 효과적으로 공유할 수 있도록 3D 및 정보 기반의 설계, 엔지니어링, 건설관리 업무를 지원하게 된다. 위의 목표를 달성하기 위해서 연구단은 가상건설시스템 하위에 다양한 기능을 수행하는 모듈들을 개발하는 데에 연구의 초점을 맞추고 있다. 첫째, 3D 기반 구조 설계 설비 및 견적시스템 개발이다. 둘째, 가상현실 기법을 활용한 기획단계에서의 프로세스 시뮬레이션 및 사업성 분석 시스템 개발이다. 셋째, 건설프로젝트에서 다루어지는 모든 정보를 관리할 수 있는 CPLM(Construction Project Life-cycle Management)을 개발하는 것이다. CPLM은 3D 기술과 정보 기반 협업을 통한 의사결정 지원 시스템이다. 이와 같은 본 연구단의 최종목표에 도달하기 위하여 2차 년도에 가상건설 프로토타입 시스템을 개발 완료하였고, 3차 년도 가상건설 시스템의 각 모듈 완성 및 시스템 통합을 목표로 연구를 진행하고 있다. 본 연구는 향후 건설산업에서 필수개념으로 자리잡게 될 BIM의 국가적 차원의 연구라는 점에서 시사하는 바가 크다고 할 수 있다.