• 한국컴퓨터정보학회논문지
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• 제17권10호
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• pp.203-216
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• 2012

현재 조직의 성공적인 운영을 위해서 정보시스템의 중요성은 더욱 증가하고 있으며, 또한 정보시스템 구축에 대한 감리는 감리 의무화에 따라 더욱 확산되고 있다. 그러나 아직까지도 우리나라의 정보시스템 감리는 정보시스템의 다양한 위험에 제대로 대처하지 못하고 있으며, 각종 정보시스템 프로젝트에 대해 감리를 수행하면서 부실 사례가 종종 발생하고 있어 이에 대한 개선 대책이 절실히 필요한 실정이다. 이에 따라 본 논문에서는 국내 대형 SI업체에서 4년간 수행한 정보시스템 감리 프로젝트 및 위험발생 프로젝트 데이터를 중심으로 통계분석을 수행하여 정보시스템 구축 프로젝트의 품질향상을 위하여 개선된 검토항목을 제시하였고, 또한 이를 실제 정보시스템 프로젝트 사례에 적용하여 본 논문의 결과에 대한 실효성을 검증하였다.

• 설비공학논문집
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• 제28권10호
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• pp.402-407
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• 2016

Ground-coupled heat pump systems have been widely used, as they are regarded as a renewable energy source and ensure a high annual efficiency. Among the system components, borehole heat exchangers (BHE) play an important role in decreasing the entering water temperature (EWT) to heat pumps in the cooling season, and consequently improve the COP. The optimal sizing of the BHEs is crucial for a successful project. Other than the existing sizing methods, a simulation-based design tool is more applicable for modern complex geothermal systems, and it may also be useful since design and engineering works operate on the same platform. A simulation-based sizing method is proposed in this study using the well-known Duct STorage (DST) model in Trnsys. TRNOPT, the Trnsys optimization tool, is used to search for an optimal value of the length of BHEs under given ground loads and ground properties. The result shows that a maximum EWT of BHEs during a design period (10 years) successfully approaches the design EWT while providing an optimal BHE length. Compared to the existing design tool, very similar lengths are calculated by both methods with a small error of 1.07%.

• 보건행정학회지
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• 제24권4호
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• pp.396-412
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• 2014

Background: As a reform plan of health care system, Accountable Care Organization (ACO) has became an object of attention in the United States after Patient Protection and Affordable Care Act was enacted. ACO is a group of various health care providers and provide coordinated care to its assigned beneficiaries. If ACOs improve the quality level and reduce the cost of care, they can get financial incentives. Under the discussion for a quite long time and demonstration projects, ACO has been established. We aimed to analysis and discuss the history, policy mechanism, contents, status and outcomes of ACO. Also, we intended to suggest political implication Korean health care system with regard to ACO. Methods: We searched the articles related ACO in PubMed and selected several available papers about ACO. Total 56 studies were reviewed and categorized three parts; demonstration projects for formation of ACO, policy mechanism and agenda, empirical results of ACO performance. Results: As a result, establishment of ACO was successful partly in the US. It seems to be due to various project and pilot test for verification in the long time. The empirical effect of ACO was also identified in a few study but it needs more evidences to judge its positive effect. Conclusion: In Korea, there are arguments for the application of ACO. However it is difficult to implement a ACO by different political conditions between Korean and US. Nevertheless ACO proposed us the necessity of paradigm shift in our health policy and could be significant to national policy orientation in the future.

• 터널과지하공간
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• 제27권2호
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• pp.89-99
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• 2017

이산화탄소 지중저장 사업의 성공적인 수행을 위해서는 저장시스템의 안정성을 확보할 수 있는 대상 지층을 선정하고 현장 지질조건에 최적화된 주입 조건을 설계해야 한다. 본 연구에서는 국내 실증실험 대상 예상후보지의 하나인 장기분지의 지질구조를 바탕으로 2차원 간략해석모델을 구축하고 TOUGH-FLAC 연계해석기법을 사용하여 초기응력조건과 주입량이 이산화탄소 격리저장시스템에 미치는 영향을 분석하였다. 기초해석 결과, 수직응력이 수평응력보다 우세한 정단층 응력조건에서 전단미끄러짐 가능성이 가장 높은 결과를 보였으며, 단위시간당 주입량을 달리하는 주입량 시나리오 해석에서는 주입량을 단계적으로 증가시켜 주입하는 경우가 공극압의 증가폭이 가장 크고 활동마찰계수를 이용한 전단미끄러짐 가능성 평가 결과에서도 가장 불리한 것으로 평가되었다.

• Journal of Information Technology Applications and Management
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• 제25권1호
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• pp.1-17
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• 2018

This study presents a research model that demonstrates the dominant design technology strategy for developing and securing dominant design technology based on open innovation. For this purpose, this study developed a strategic model for the development and acquisition of design technology, production technology, and production system of propeller which satisfies the requirements of ship propulsion system required by ship owners and shipbuilders. By studying large propellers for ships, it is possible to embody a strategic model that can be used as a technology development strategy of dominant design that is effective in technology field of other industries. In this study, HSP (High Skewed Propeller) strategy of Hyundai Heavy Industries, which occupies the largest global market share (47.5%, 2007) for more than 30 years until now, is analyzed as a successful case to verify this strategic model. The development and acquisition strategy model of dominant design technology presented in this study consists of four stages : dominant design project strategy, dominant design engineering technology strategy, dominant design production technology strategy, and dominant design production system strategy. The strategic model summarizes the key activities at each stage. In addition, the steps and core activities of this strategic model were confirmed through the case study. As a technology development strategy of HSP products, Hyundai Heavy Industries utilized open innovation technology to cooperate with outside, that is, collaborative research and development with KAIST (Korea Advanced Institute of Science and Technology) research team, and succeeded in achieving technology development of dominant design of HSP products by linking it with HSP technology development and acquisition strategy.

• 융합보안논문지
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• 제13권3호
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• pp.55-62
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• 2013

시스템엔지니어링은 오늘날의 기업에 무척 중요하며 요구공학은 전반적인 과정상 중요한 단계이다. 요구공학은 고객으로부터 요구사항을 도출하고 문서화하는 것으로 시스템 개발의 첫 번째 단계이며, 시스템을 설계 제작하고 시험하고, 운영 유지하는 모든 과정이 요구사항에 관련되어 있어 프로젝트 성공의 매우 중요한 사항으로 평가된다. 프로젝트 성공을 위해 빈약한 요구사항을 최소화하도록 객체 지향 요구공학이 제안되어 졌다. 객체 지향 요구공학은 요구사항 각각에 대하여 기능성은 물론 제품과 프로세스에 대한 정보를 통합하여 관리하는 접근방식이다. 본 논문은 객체 지향적 요구사항 관리의 모범인 OCH(Operations Concept Harbinger)의 개념 적용을 통하여 사용자 요구 수집단계에서 다양한 이해관계자의 의견을 동시에 통합적으로 수렴하여 사용자 요구를 요구사항으로 전환하고 요구사항별로 추적함으로써 무기체계 획득을 위한 정확한 요구사항 개발과 관리를 가능케 하고 사용자 요구누락 및 왜곡을 방지하며 통합적 프로젝트 관리가 가능토록 제안하는 것이다.

• Earthquakes and Structures
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• 제6권6호
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• pp.647-664
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• 2014

A reduction of the response of irregular structures subjected to earthquake excitation by control devices equipped by suitable control algorithm is proposed in this paper. The control algorithm, which is used, is the pole placement one. A requirement of successful application of pole placement algorithm is a definition-selection of suitable poles (eigen-values) of controlled irregular structures. Based on these poles, the required action is calculated and applied to the irregular structure by means of control devices. The selection of poles of controlled irregular structure, is a critical issue for the success of the algorithm. The calculation of suitable poles of controlled irregular structure is proposed herein by the following procedure: a fictitious symmetrical structure is considered from the irregular structure, adding vertical elements, such as columns or shear walls, at any location where is necessary. Then, the eigen-values of symmetrical structure are calculated, and are forced to be the poles of irregular controlled structure. Based on these poles and additional damping, the new poles of the controlled irregular structure are calculated. By pole placement algorithm, the feedback matrix is obtained. Using this feedback matrix, control forces are calculated at any time during the earthquake, and are applied to the irregular structure by the control devices. This procedure results in making the controlled irregular structure to behave like a symmetrical one. This control strategy can be applied to one storey or to multi-storey irregular buildings. Furthermore, the numerical results were shown that with small amount of control force, a sufficient reduction of the response of irregular buildings is achieved.

• 경영정보학연구
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• 제12권2호
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• pp.105-119
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• 2010

기업의 IT 환경이 기술중심에서 업무중심으로 변화하면서 SOA(Service Oriented Architecture)는 기업이 시장 요구에 민첩하게 대응할 수 있는 인프라를 구축하기 위한 통합 서비스 지향 개념으로 주목 받고 있다. 본 연구에서는 국내외 SOA 구축의 핵심 성공요인을 알아보기 위해 SOA 관련 전문가들과 국내 SOA 도입 성공 기업의 관계자를 대상으로 사례 조사와 설문 조사를 실시하였다. 연구결과, 기업의 SOA 성공 핵심 요소는 CIO의 강력한 의지와 이를 바탕으로 한 SOA 전담 조직의 구성, SOA 전담 조직을 통한 전사적 공감대 형성과 표준화 작업, 현업의 적극적인 이해와 참여를 통한 서비스 정의와 중복요소 제거, 통합 인프라를 통한 서비스 유연성과 비즈니스 민첩성의 확보, SOA의 투자 효과에 대한 측정 지표의 활용을 통한 안정적인 지원과 예산 확보 등이 핵심 성공요인으로 조사 되었다.

• 한국터널지하공간학회 논문집
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• 제22권6호
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• pp.611-622
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• 2020

최근 국내에서 쉴드TBM을 이용하는 터널공사의 발주가 증가하고 있으나 터널구간의 특성을 고려한 장비제작을 위한 정보의 제공은 체계적이지 못하여, 적합한 장비설계를 하는데 어려움이 많다. 본 기술보고는 외국의 사례검토를 바탕으로 토압식 쉴드TBM의 장비발주를 위한 설계항목과 세부 요구사양의 구성에 대해 국내에서 활용 가능한 내용을 예시로서 제시하였다. 제안하는 내용을 바탕으로 발주자는 장비 발주 시 필요한 전반적인 방향을 제시가능하고, 입찰자는 명확하고 과업조건에 적합한 장비를 설계, 제작하여 민원이 없고, 안전한 토압식 쉴드TBM 터널공사의 활성화에 기여할 수 있을 것으로 기대된다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2329-2336
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• 2016

Background: Despite the existence of established guidelines advocating the use and value of chemotherapy order templates, chemotherapy orders are still handwritten in many hospitals in Lebanon. This manuscript describes the implementation of standardized chemotherapy order templates (COT) in a Lebanese tertiary teaching hospital through multiple steps. Initial Assessment: An initial assessment was conducted through a retrospective appraisal of completeness of handwritten chemotherapy orders for 100 adult patients to serve as a baseline for the project and identify parameters that might afford improvement. Choice of solution: Development of over 300 standardized pre-printed COTs based on the National Comprehensive Cancer Network templates and adapted to the practice culture and patient population. Implementation: The COTs were implemented, using Kotter's 8-step model for leading change, by engaging health care providers, and identifying and removing barriers. Evaluation: Assessment of physicians' compliance with the new practice (122 orders assessed) was completed through two phases and allowed for the identification of areas of improvement. Lessons Learned: Overall, COT implementation showed an average improvement in order completion from 49.5% (handwritten orders) to 77.6% (phase 1-COT) to 87.6% (phase 2-COT) reflecting an increase of 38.1% between baseline and phase 2 and demonstrating that chemotherapy orders completeness was improved by pre-printed COT. As many of the hospitals in Lebanon are moving towards standardized COTs and computerized physician order entry (CPOE) in the next few years, this study provides a prototype for the successful implementation of COT and demonstrates their role in promoting quality improvement of cancer care.