• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2003년도 창립학술대회
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• pp.191-210
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• 2003

In modern dynamic management environment, there is growing recognition that information & knowledge management systems are essential for CEO's Efficient/effective decision making, As a key component to cope with this current, we suggest the management performance analysis system based on Knowledge Discovery in Database (KDD). The system measures management performance that is considered with both VA(Value-Added), which represents stakeholder's point of view and EVA(Economic Value-Added), which represents shareholder's point of view, The relationship between management performance and some 80 financial ratios is analyzed, and then important financial ratios are drawn out. In analyzing the relationship, we applied KDD process which includes such as multidimensional cube, OLAP(On -Line Analytic Process), data mining and AHP(Analytic Hierarchy Process). To demonstrate the performance of the system, we conducted a case study using financial data over the 16-years from 1981 to 1996 of Korean automobile industry which is taken from database of KISFAS(Korea Investors Services Financial Analysis System).

• Journal of Korea Trade
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• 제26권2호
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• pp.65-83
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• 2022

Purpose - The purpose of this study is to evaluate the economic effects of FTAs using the concept of value-added exports. So far, the economic effects of FTAs have been dependent on decrease in import prices due to tariff cuts in importing countries, but the actual tariff reduction need to consider the value added of the exporting countries. Design/methodology - Value-added export refers to the added value created in the exporting country out of total exports. Among value-added exports, direct value-added export is interpreted as the Regional Value Contents (RVC), from which the economic effect of the FTA can be analyzed. A modified GTAP-VA model takes into account RVC in order to estimate accurate effects of FTAs. Findings - By the re-evaluation of the FTA based on the RVC, this paper makes it clear that the economic effects of the existing FTA methodology have the possibility of overestimation. In addition, as a new FTA with a strengthened Rules of Origin (ROO) is being initiated, a negative impact on international trade and GVC utilization may occur. Originality/value - This study introduces the concept of value-added export in analyzing the effects of FTAs. The new analysis methodology of this paper emphasizes the importance of value-added exports. Re-organization of GVCs would change regional trade agreements and empower ROO by weakening existing GVCs and transforming the value chain from global into regional scope.

• 산업경영시스템학회지
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• 제2권2호
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• pp.11-18
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• 1979

The purpose of this study is to establish a purchasing cost reduction program for the management practical use. The research method of this study is a bibliographical search of the materials available in the library at Keimyung University and the writer's private study, and the case analysis. The body of this study is divided into three sections. The first section deals with the purchasing management systems in terms of the nature and characters of purchasing management and purchasing cost in total management system. The second section includes purchasing cost reduction program through value analysis technique and the third section covers summary and the following conclusions : 1) Top management should be aware of the important position of purchasing activities from the cost point of view, and they should be aware that a good purchasing cost reduction program could be established through value analysis technique. 2) For such a purchasing cost reduction program to be carried out. effectively the management should support and back up the program. 3) There should be a training program to educate and develop the personnel who can manage and operate the purchasing cost reduction program through valuean analysis technique. 4) And cooperative system should be established in management and operative organization system from the total management systems, view for the effective use of the program.

• 산업공학
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• 제14권2호
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• pp.164-171
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• 2001

We suggest a Business Performance Information System with Knowledge Discovery in Databases(KDD) as a key component of integrated information and knowledge management system. The proposed system measures business performance by considering both VA(Value-Added), which represents stakeholder's point of view and EVA(Economic Value-Added), which represents shareholder's point of view. In modeling of Business Performance Information System, we apply the following KDD processes : Data Warehouse for consistent management of a performance data, On-Line Analytic Processing(OLAP) for multidimensional analysis, Genetic Algorithms for exploring and finding dominant managing factors and Analytic Hierarchy Process(AHP) for applying expert's knowledge and experience. To demonstrate the performance of the system, we conducted a case study using financial data of Korean automobile industry over 16 years from 1981 to 1996, which is taken from database of KISFAS(Korea Investors Services Financial Analysis System).

• 한국경제지리학회지
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• 제24권3호
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• pp.243-258
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• 2021

본 연구는 미·중 무역 전쟁과 일대일로가 촉발할 세계무역의 변화를 부가가치 기준 무역 통계를 이용하고, 사회연결망 기법을 활용하여 분석하였다. 분석 결과, 첫째, 일대일로 무역 환경은 제조 허브로서의 중국의 위상을 견고히 하고, 유럽 서비스 산업의 위상을 강화한다. 둘째, 1995년부터 2011년까지 GVC 네트워크 내에서 영향력이 큰 산업인 미국의 R&D 산업과 도소매업 및 독일의 자동차 산업은 미·중 무역 분쟁과 일대일로 무역 환경이 반영된 2049년까지도 그 위상이 안정적으로 유지된다. 셋째, 커뮤니티 수의 증가를 통해 일대일로가 GVC 네트워크의 분화를 심화시킨다는 것을 확인할 수 있다. 끝으로 중국의 전자 산업, 독일의 자동차 산업, 미국의 R&D 산업의 커뮤니티 진화 형태에서 주목할 만한 특성이 발견되는데 이는 각국 서비스 산업의 역량과 밀접하게 연관된다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 춘계학술대회 논문집 유기절연재료 전자세라믹 방전플라즈마 일렉트렛트 및 응용기술
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• pp.132-137
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• 2002

The mold transformers have been widely used in underground substations in large building and have some advantages in comparison to oil-transformer, that is low fire risk, excellent environmental compatibility, compact size and high reliability. In addition, the application of mold transformer for outdoor is possible due to development of epoxy resin. The mold transformer generally has cooling duct between low voltage coil and high voltage coil. A mold transformer made by one body molding method has been developed for small size and low loss. The life of transformer is significantly dependent on the thermal behavior in windings. To analyse winding temperature rise, many transformer designer have calculated temperature distribution and hot spot point by finite element method(FEM). Recently, numerical analyses of transformer are studied for optimum design, that is electric field analysis, magnetic field, potential vibration, thermal distribution and thermal stress. In this paper, the temperature distribution of 50 kVA pole mold transformer for power distribution are investigated by FEM program and the temperature rise test of designed mold transformer carried out and test result is analyzed compare to simulation data. In this result, the designed mold transformer is satisfied to limit value of temperature and the other property is good such as voltage ratio, winding resistance, no-load loss, load loss, impedance voltage and percent regulation.

• 조명전기설비학회논문지
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• 제15권1호
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• pp.118-124
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• 2001

아파트에서의 전력수요예측과 에너지 절약을 유도하기 위하여 본 연구에서는 1,080아파트 단지의 전력소비실태를 설문조사하여 전력부하밀도, 전력소비량, 설비의 현황 등을 분석·제시하였다. 분석 결과 연면적 대비 전력 부하밀도는 최대 7.70[VA/m2], 평균 6.0[VA/m2] 등으로 분석되었으며, 평균 부하율은 64[%]인 것으로 나타났다. 그리고 전국 아파트에서 년간 소비되는 전력량은 국내 총 소비전력량의 7[%]에 해당되는 14,008[GWh/년]으로 분석되었다.

• 한국경제지리학회지
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• 제19권3호
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• pp.491-511
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• 2016

본 논문은 세계 자동차산업을 대상으로 2015년판 OECD-TIVA 자료 분석을 통해 구축된 수출품의 해외조달 부가가치 네트워크 특성을 사회네트워크 기법을 활용하여 분석하였다. 그 연구결과를 요약하면 다음과 같다. 첫째, 1995-2011년 기간 동안에 생산공정 분업은 EU, NAFTA와 같은 역내 경제블록에 한정된 것이 아니라 세계적인 차원으로 심화되었다. 둘째, 수출품의 부가가치 해외조달 네트워크는 위계적이고 공간적으로 집중되고 평균거리가 짧아지는 좁은 세상 네트워크의 특성들을 보여주었다. 셋째, 자동차산업 글로벌 가치사슬에서 주요 공급자는 소수의 국가들에 불과하지만 중간재의 사용자는 다수의 국가들이다. 가장 핵심적인 해외 부가가치의 공급자들인 미국, 독일, 중국 간에 특징적인 차이가 존재한다. 생산공정 분업이 글로벌 수준에서 전개된 것은 사실이지만 그 이면에 중심과 주변, 국내와 외국자본의 이분법의 긴장이 놓여 있다.

• KSBB Journal
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• 제17권4호
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• pp.339-344
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• 2002

Flow injection analysis technique for monitoring of xylitol concentrations in biological processes has been developed using xylitol oxidase (XYO) immobilized on VA-Epoxy Biosynth carrier. The immobilized XYO cartridge has been integrated into a FIA system with an oxygen electrode and systematically investigated with regards to the factors which can affect the activity of the immobilized XYO, such as pH, temperature, salt concentration etc. The activity of the immobilized XYO increased with the temperature ($19.0 - 29.0^{circ}C$) and sample injection volume ($75-250\muL$) and molarity of potassium phosphate buffer (0.1-1 M), but it reached the highest value at pH 8.5. The XYO-FIA system has been also applied for on-line monitoring of xylitol concentrations in a reactor and showed good operational stability and agreement with off-line data measured with HPLC.

• 분석과학
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• 제25권1호
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• pp.50-59
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• 2012

DNPH 카트리지 방식으로 카보닐성분들을 채취할 때, 습도변화에 따른 채취효율의 특성을 체계적으로 진단하였다. 6개의 카보닐성분(formaldehyde (FA), acetaldehyde (AA), propionaldehyde (PA), butyraldehyde (BA), isovaleraldehyde (IA), valeraldehyde (VA))을 함유한 기체상 표준시료를 DNPH카트리지로 흡수 후 용출하여 HPLC/UV 검출기로 분석하였다. 이 결과를 비슷한 수준으로 조제한 액상 혼합표준용액의 검정 결과와 비교하였다. 액상 표준시료와 대비하였을 때, 상대적으로 저분자 성분(폼알데하이드, 아세트알데하이드)에 비해 고분자 성분(프로피온알데하이드 이상)들의 회수율이 낮게 나타났다. 습도변화에 따른 기체상 표준시료의 채취효율을 0-80% 상대습도 범위에서 비교한 결과, 20~80%에서 저분자량과 고분자량 카보닐화합물들 간에 채취효율의 차이가 유지되었다. FA와 AA와 같은 저분자량 카보닐화합물의 경우, 습도의 변화에 대해 미미한 변화를 보였다. 그러나 PA 이상의 성분들은 회수율이 증가하는 경향을 보였다. 이러한 경향은 비교분석을 시도한 3개 제품에서 모두 유사한 경향을 보였으며, 고분자 카보닐화합물의 경우, 습도에 따른 회수율-변화를 적절히 보정할 필요가 있다.