• 기술사
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• 제34권2호
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• pp.23-27
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• 2001

Until 1996, CFC refrigerants haven't been used because it destroyed ozone that affecting In ecosystem. And HCFC will prohibit until 2020. In Europe, they attempt to move up its fulfillment. Until now the change have completed CFC into HFC134a and is considerated HCFC into HFC410A and HFC407C. But HFC41 OA has high condenser temperature and HFC407C is non-azeotropic refrigerant mixture and gliding temperature phenomenon. New refrigerant ell POE, PVE, PAG was also developed.

• 기술사
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• 제41권5호
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• pp.59-64
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• 2008

Having regarded space technology as one of national strategic technologies for its national development, the Korean Government legislated "Space Development Promotion Act" in 2005. Based on it, the Korean government established "National Space Committee" and set up "Long-Term Plan for Korea's Space Development". For the fulfillment of those national policies, related organizations including Korea Aerospace Research Institute are developing various satellites, space launch vehicle(KSLV-1), and Naro-space center. etc.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국내학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.1058-1062
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• 1993

A fuzzy reasoning method is proposed for the implementation of control systems based on non-fuzzy microprocessors. The essence of the proposed method is to search the local active miles instead of the global rule base. Thus the reasoning is conveniently performed on a master cell as a fuzzy accelerating kernel, which is transformed from an active fuzzy cell. The interpolative reasoning is simplified via adopting the algebraic product of fulfillment for the conditional connective AND and the weighted average for the rule sentence connective ALSO.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 춘계학술대회 논문집
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• pp.1105-1108
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• 2005

In oder to develope a train system for parcel service of high speed railway, which had been proposed for the operation of a high speed train, its conceptual design was build. Through this system, we are able to expect the fulfillment of customer needs for high speed rail market segments, and enhancement for cost-effective rail network operation of the mixed traffic on infrastructure cost-reduction in national logistics.

• 한국주거학회논문집
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• 제8권3호
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• pp.111-118
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• 1997

This study is intended to analyze the preference of one-room apartment according to the type of life style of single people between 20 and 30 years age. The major findings were as follows: 1) The single people prefer the one-roon apartment(90.2%). 2) The Life styles were classified into 5 types: tradition preservation. self-fulfillment, fashion-pursuit. economy priority. convenience-pursuit. 3) The preference of a one room apartment is strongly influenced by all types of life styles regardless of tradition preservation.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2006년도 추계학술대회
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• pp.570-575
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• 2006

현재의 우리나라 SI 관련 산업 분류체계는 상세한 수준의 분류가 이루어지지 못하였을 뿐만 아니라 새로운 산업 및 산업계의 변화를 적시에 반영시키지 못하는 단점이 있다. 지속적인 SI 분야 산업 발전에 따라 보다 정확한 세부분야 별 생산성 및 매출액 등의 데이터가 필요할 뿐만 아니라 적극적인 수출품목으로의 육성을 위하여 국제적인 분류체계와도 일치성을 가져야 할 필요성이 대두되고 있다. 본 논문에서는 기존의 국내외 SI 산업 분류체계의 장단점을 분석한 후 새로운 SI 분류체계를 제안한다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.2-3
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• 2015

This paper probes into safety leadership in construction and its impacts on site safety performance. A safety leadership model for construction is proposed. It contains two impacting paths of safety leadership, namely safety management and safety culture. By action research, safety improvement is achieved through leadership fulfillment on construction sites.

• 산업경영시스템학회지
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• 제39권4호
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• pp.72-80
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• 2016

The market size of plant projects in overseas is so large that domestic EPC project contractors are actively seeking the overseas projects and then trying to meet completion plans since successful fulfillment of these projects can provide great opportunities for them to expand into new foreign markets. International EPC projects involve all of the uncertainties common to domestic projects as well as uncertainties specific to foreign projects including marine transportation, customs, regulations, nationality, culture and so on. When overseas project gets off-schedule, the resulting uncertainty may trigger unexpected exceptions and then critical effects to the project performance. It usually require much more time and costs to encounter these exceptions in foreign sites compared to domestic project sites. Therefore, an exception handling approach is required to manage exceptions effectively for successful project progress in foreign project sites. In this research, we proposed a methodology for prediction and evaluation of exceptions caused by risks in international EPC projects based on sensitivity analysis and Bayesian Networks. First, we identified project schedule risks and related exceptions, which may meet during the fulfillment of foreign EPC projects that is performed in a sequence of engineering, procurement, preparatory manufacture, foreign shipping, construction, inspection and modification activities, and affect project performance, using literature review and expert interviews. The impact of exceptions to the schedule delay were also identified. Second, we proposed a methodology to predict the occurrence of exceptions caused by project risks and evaluate them. Using sensitivity analysis, we can identify activities that critically affect schedule delay and need to focus by priority. Then, we use Bayesian Networks to predict and evaluate exceptions. Third, we applied the proposed methodology to an international EPC project example to validate the proposed approach. Finally, we concluded the research with the further research topics. We expect that the proposed approach can be extended to apply in exception management in project management.

• 한국산업정보학회논문지
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• 제6권3호
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• pp.79-86
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• 2001

신종 직업병 중 누적외상성질환(Cumulative Trauma Disorders)은 고도로 분업화된 현대 산업환경에서 주로 수작업을 수행하는 종사자에게 발생된다. 본 연구는 단순반복근로자의 누적외상성질환에 노출되는 정도를 EMG시스템을 이용하여 분석한 결과는 다음과 같다. AEMG에서는 작업경과에 따라 근피로도는 증가하다가 작업 완료시에는 근피로도가 내화벽돌을 들기 전보다 감소하였다. MF와 MPF에에서는 천극근, 다열근의 근피로도가 많은 것으로 나타났다. ZCR에서는 모든 내화벽돌의 무게에서 작업전과 작업후의 근피로도가 가장 낮게 나타났다. 종합적으로 작업진행이 계속됨에 따라 근육피로도는 증가하고 있었고, 단순반복운반작업시에 천극근과 다열관에 대한 근피로도가 큰 것으로 나타났다.

• Clinical and Experimental Pediatrics
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• 제58권10호
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• pp.369-373
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• 2015

Purpose: In 2004, the American Heart Association (AHA) had published an algorithm for the diagnosis of incomplete Kawasaki disease (KD). The aim of the present study was to investigate characteristics of supplemental laboratory criteria in this algorithm. Methods: We retrospectively examined the medical records of 355 patients with KD who were treated with intravenous immunoglobulin (IVIG) during the acute phase of the disease. Laboratory data were obtained before the initial IVIG administration and up to 10 days after fever onset. In 106 patients, laboratory testing was performed more than twice. Results: The AHA supplemental laboratory criteria were fulfilled in 90 patients (25.4%), and the frequency of laboratory examination (odds ratio [OR], 1.981; 95% confidence interval [CI], 1.391-2.821; P<0.001) was a significant predictor of it. The fulfillment of AHA supplemental laboratory criteria was significantly associated with refractoriness to the initial IVIG administration (OR, 2.388; 95% CI, 1.182-4.826; P=0.013) and dilatation of coronary arteries (OR, 2.776; 95% CI, 1.519-5.074; P=0.001). Conclusion: Repeated laboratory testing increased the rate of fulfillment of the AHA supplemental laboratory criteria in children with KD.