• 산업경영시스템학회지
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• 제46권spc호
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• pp.9-18
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• 2023

In the global manufacturing industry, digital transformation is emerging as an important issue for companies to improve productivity and strengthen industrial competitiveness. The government and shipbuilding companies drive research and development to attain advanced technologies through digital transformation for shipbuilding & offshore plants, one of Korea's representative manufacturing industries. Therefore, the digital transformation of the shipbuilding & offshore plant industry was defined using an input-output analysis model, and the economic interrelationships of industries linked to the digital transformation of the shipbuilding & offshore plant industry were analyzed. According to the analysis, the shipbuilding & offshore plant industry ranks second among all 34 industries regarding the forward linkage effect. The backward linkage effect was ranked 27th, making it a mid-demand industry with a robust forward linkage effect. In addition, the production-induced effect was 0.455, the value-added-induced effect was 0.174, and the employment-induced effect was 1.779 people per billion won. The contribution of this study is that it will provide the basis for establishing policies necessary to strengthen the competitiveness of the shipbuilding & offshore plant industry. Also, it will help analyze the economic effects of digital transformation in other manufacturing industries.

• 한국경제지리학회지
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• 제21권2호
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• pp.77-89
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• 2018

본 논문의 목적은 서울과 부산을 대상으로 제조업과 서비스업의 상호 연관성 실태를 분석하고 이의 시사점을 도출하는 것이다. 본 논문에서는 투입산출계수와 생산유발계수를 통해 제조업에 대한 서비스업의 연관성과 서비스업에 대한 제조업의 연관성을 각각 분석하였다. 분석결과, 서울의 주력 제조업인 소비재는 서비스업과의 연관성이 상대적으로 높은 반면 부산의 주력 제조업인 조립가공은 서비스업과의 연관성이 상대적으로 낮아 제조업에 대한 서비스업의 연관성은 서울이 부산보다 높은 것으로 나타났다. 둘째, 제조업 생산과정에 투입되는 서비스업의 자기지역 의존비율이 서울은 72.0% 이지만 부산은 49.0%로 낮아, 부산 제조업의 성장이 전산업에 미치는 효과가 제한적인 것으로 분석되었다. 셋째, 서비스업에 대한 제조업의 연관성은 전반적으로 부산이 서울보다 높은 것으로 나타났다. 마지막으로 분석결과를 바탕으로 제조업과 서비스업의 상호 연관성 제고를 위한 정책방향을 제시하였다.

• 무역학회지
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• 제47권1호
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• pp.115-130
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• 2022

In this study, I focus on analyzing how the effects of implementing ETS are different depending on whether Korean ETS linking with carbon markets in other countries. The global computable general equilibrium (CGE) model built in this study analyzes the chages in the production and trade of industrial sectors according to the international linkage of ETS compared to the reference scenario of emissions reduction targets and implementation of ETS. From the analysis of internatioanl linkage of carbon markets scenarios, Annex B countries-South Korea carbon market linkage with individual ETS in China worse the economic outcomes in South Korea the most. This means South Korea lose the international competitiveness compared to China in this scenario. On the other hand, Annex B-China carbon market linkage with Korean individual ETS implementation reduce the decreases in production and trading. The most effective way is to join a global emissions trading market with China. The results are consistent in most industries of South Korea. These results are caused by that the supply of emission allowance is increased and the price of emissions allowances is dropped by China's participation to the carbon market, which can be understood to reduce the carbon reduction cost for industrial sectors. In addition, it can be also concluded that the determinant of the negative impact of ETS on changes in production and trade is more sensitive to the price of emissions allowances than to the characteristics of production and trade structure.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제2B권3호
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• pp.125-132
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• 2002

PMSMS (permanent magnet synchronous motors) are widely used in industrial applications and home appliances because of their high torque to inertia ratio, superior power density, and high efficiency. For high performance control, accurate informations about the rotor position is essential. Sensorless algorithms have lately been studied extensively due to the high cost of position sensors and their low reliability in harsh environments. A novel position sensorless speed control for PMSMs uses indirect flux estimation and is presented in this paper. Rotor position and angular velocity are estimated by the proposed indirect flux estimation. Linkage flux and magnetic field flux are calculated by the voltage equations and the measured phase current without any integration. Instead of linkage flux calculation with integral operation, indirect flux and differential magnetic field are used for the estimation of rotor position. A proper rejection technique fur current noise effect in the calculation of differential linkage flux is introduced. The proposed indirect flux detecting method is free from the integral rounding error and linkage flux drift problem, because differential linkage flux can be calculated without any integral operation. Furthermore, electrical parameters of the PMSM can be measured by the proposed TCM (time compression method) for soft starting and precise estimation of rotor position. The position estimator uses accurate electrical parameters that are obtained from the proposed TCM at starting strategy. In the operating region, a proper compensation method fur temperature effect can compensate fir the estimation error from the variation of electrical parameters. The proposed novel position sensorless speed control scheme is verified by the experimental results.

• 경영정보학연구
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• 제19권4호
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• pp.111-134
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• 2017

본 연구는 1996년부터 2011년까지 투입산출표를 이용하여 해당 기간 동안 한국의 ICT 산업과 자동차 산업의 산업연쇄효과 및 경쟁우위를 비교하였다. 국제표준산업분류(ISIC Rev.4)에 따라 ICT 산업을 분류하여 범위를 명확히 하였으며, 제품의 특성, 혁신주기에 따라 ICT 산업 내 제조업과 서비스업, 그리고 자동차 산업 내 제조업과 서비스업 부문으로 분류하였다. 연구 결과는, (1) ICT 산업은 수요(Backward Linkage Effect)와 공급(Forward Linkage Effect) 측면에서 자동차 산업의 평균과 비슷한 수준의 파급효과를 가지고 있다. (2) ICT 제조업은 수요와 공급 측면에서 ICT 서비스업의 평균보다 높은 수준의 파급효과를 가지고 있다. (3) 자동차 제조업은 수요와 공급 측면에서 모두 높은 수준의 파급효과를 갖지만, 자동차 서비스업은 공급 측면에서만 높은 수준의 파급효과를 갖는다. (4) ICT 제조업은 수요와 공급 측면에서 모두 높은 수준의 파급효과를 갖지만, 자동차 제조업은 공급 측면에서 높은 수준의 파급효과를 갖는다. (5) ICT 서비스업은 수요 측면에서 높은 수준의 파급효과를 가지고 있었으나 그 효과가 줄어들고 있고, 자동차 서비스업은 공급 측면에서 높은 수준의 파급효과를 갖는다고 보여준다. 이러한 연구 결과를 통하여, 이 전의 연구들에서 논의가 되었던 ICT 산업에 대한 분류 기준을 명확히 제시하였으며 ICT 산업과 자동차 산업에 대한 파급효과 및 중요성을 확인하고, 정책적 시사점을 제시하였다.

• 한국산업정보학회논문지
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• 제23권5호
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• pp.103-118
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• 2018

본 논문은 세계산업연관표의 전후방연쇄효과를 이용하여 2000년부터 2014년까지의 한국, 중국, 일본의 1차 산업의 생산유발효과를 비교 분석하였다. 1차 산업의 산업영향력에 관한 연구는 활발히 진행되어 왔으나, 본 논문은 1차 산업 분야에 대한 한국, 중국, 일본의 산업연쇄효과의 차이에 대한 연구라는 점에서 의미가 있다. Fisher(1939)와 Clark(1957)의 1차 산업 분류에 따라 1차 산업을 농림축산업, 임업, 수산업, 광업으로 분류하였다. 분석방법으로는 세계산업연관표를 이용하여 한국, 중국, 일본 3국간 산업연관모형을 만든 후 비교분석하는 것이다. 본 연구의 결과에 따르면, 농림축산업, 광업은 한국, 중국, 일본 각 국가별로 전 후방 연쇄효과에 유의한 차이가 있었고 임업과 수산업의 경우 한국, 중국, 일본의 전 후방 연쇄효과에 부분적으로 유의한 차이가 있었다. 1차 산업의 산업의존도 변화를 4차 산업혁명의 시대에 산업의 전방연쇄효과와 후방연쇄효과를 IO 분석을 통해 각 국가별로 비교함으로서 향후 1차 산업이 나아가야할 방향을 제시하였다.

• 대한안전경영과학회지
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• 제15권3호
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• pp.151-161
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• 2013

This paper proposes a strategic model of linkage between productivity metrics and financial accounting metrics to properly evaluate the financial effect of TPM activities and the business performance. This linkage strategy provides a connection tool for clear communication between factory-level and headquarters that the metrics proposed by this paper ultimately improves a quality of support from the management by receiving the factors required for productivity activities in the practical field. This factor includes such as equipment, raw materials and labors. Here, we propose that chain reaction models using break down structure of productivity metrics and financial metrics enhance the knowledge sharing of KPI (Key Performance Indicator) which generally tend to create oversimplified communication between management in headquarters and employees in the practical fields. The productivity metrics include OEE(Overall Equipment Effectiveness) of TPM (Total Productive Maintenance), OLE (Overall Labor Effectiveness) of PAC(Performance and Analysis and Control) activities, and OYE (Overall Yield Effectiveness) of TMM(Total Material Management) activities. The financial accounting metrics include ROE(Return on Equity), ROA(Return on Asset), and AVR(Added-Value Rate). The suggested chain reaction model selects the financial metrics as initial stage and branch down until final stage of productivity metrics. When demand exceeds supply, an ideal speed rate, the lean OEE strategy can be initially applied to reduce the gap between the demand and supply, then apply variable costing to estimate correct amount of operating profit. In addition, the paper presents a new type of model for linkage between financial accounting metrics including CAPEX(Capital Expenditure), OPEX(Operating Expenditure), EVA(Economic Added Value), DCL(Degree of Combined Leverage), and TPM productivity activities including AM(Autonomous Maintenance), PM(Preventive Maintenance), MP(Maintenance Prevention) and QM(Quality Maintenance). In order to support the evidence of proposed linkage strategy, a case analysis on 52 projects from national TPM contest from 2011 to 2012 is analyzed. The case presents the classification of CAPEX and OPEX activities from TPM, and proposes the correct implementation of financial effect for TPM projects.

• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 1997년도 제12회 동계학술발표회 논문집
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• pp.133-158
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• 1997

This paper analyzes the characteristics of technological knowledge flow-structure of Korean manufacturing in dynamic perspective. In doing that, the concept of the knowledge network is introduced which is defined as a set of industries and their interaction(knowledge flow) or linkage. The analysis of the inter-industrial knowledge flows is based on the technological similarity by using R&D researchers'academic background in the year of 1984, 1987, 1990. The analysis is carried out by such methodology as network analysis, indicator analysis and simple statistical analysis. And the final results are drawn both in absolute terms(dimension effect) and in relative terms (proportion effect) respectively. The main findings are as follow. First, the Korean manufacturing knowledge network appears to strengthen existing inter-industrial knowledge linkages rather than to construct new linkages. Second, the network seems to form a dualistic structure in that some high-technology sectors (knowledge production sectors) emerge along with traditional sectors (knowledge absorbing sectors). Third, since the mid-1980s, an inter-industrial fusion is witnessed among technologically intensive sectors, indicating that some sophisticated innovation modes are emerging in Korean manufacturing system.

• 기술혁신연구
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• 제28권4호
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• pp.97-126
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• 2020

본 연구는 4차 산업혁명의 핵심 산업으로 주목받고 있는 스마트홈 관련 산업의 국민경제적 파급효과를 정량적으로 분석하여 그 잠재성을 평가하였다. 이를 위해 선행연구들에 대한 문헌검토(literature review)를 통해 스마트홈 관련 산업을 제조업과 서비스업으로 분류하고 외생화하였다. 그리고 2018년 산업연관표를 이용하여 이들 산업이 유발하는 생산, 부가가치, 고용 및 취업효과와 산업간 연쇄효과를 분석하였다. 분석결과 스마트홈 제조업과 서비스업은 각 산업 영역에서 타 산업에 비해 높은 수준의 부가가치유발효과를 보였으며 스마트홈 산업 내부적으로는 제조업의 서비스업 생산 견인 기능이 상대적으로 더 크게 나타났다. 또한 4차 산업혁명기술을 활용하는 산업답게 기술집약적인 산업과의 연관성이 높을 뿐만 아니라 스마트시티, 스마트카, 핀테크 등을 구현하기 위한 서비스 부문과도 깊이 연관되어 있음을 확인하였다. 한편 스마트홈 제조업은 후방파급효과가 전방파급효과에 비해 상대적으로 높은 최종 수요적 산업인 반면 스마트홈 서비스업은 전방파급효과가 후방파급효과에 비해 상대적으로 높게 나타나 중간재 산업으로서 타 산업으로의 공급 기능이 높은 산업임을 알 수 있었다.

• 보건의료산업학회지
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• 제11권2호
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• pp.55-64
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• 2017

Objectives : Recently, concerns about the smart healthcare industry has increased worldwide. This study estimates the economic effects of the smart healthcare industry by employing input-output analysis. Methods : In this study, $29{\times}29$ sector statistics were also used as the major research method for the industry. The main analysis tools of this study, thus, included a comparison of backward and forward-linkage effects and the inducement effects of the own-industry and other industries, as well as inducement coefficients, including production, value-added, employee's pay, operating surplus, production tax, and employment. Results : The results of the analysis show that the industry has an immense economic impact, affecting major macroeconomic factors including value-added and forward - linkage effects. Additionally, the inducement effects of the smart healthcare industry are significant compared to other industries in terms of production, employee's pay, operating surplus, production tax, and employment. Conclusions : The smart healthcare industry is a growth engines for national development, because it is the industry of high value-added services. This paper offers alternatives for efficient industrial policies.