• 제목/요약/키워드: Economic Scale

검색결과 1,951건 처리시간 0.029초

추락 사고 방지를 위한 안전대 개발 (Development of Safety Strap to Prevent Fall Accidents)

  • 임경민;장명훈
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2021년도 봄 학술논문 발표대회
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    • pp.159-160
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    • 2021
  • Every year on a construction site safety scale of the crash of an accident, but the large and small, accounting for more than half. In Construction Field wearing safety belts for their safety, but the impact of fracture, including the risk of injury occurs. Accordingly, the death as well as by the crash, injuries that can reduce the size of the invention was driven by safety belts.

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한국 5대 항만의 효율성에 대한 비교연구 (The Comparative Study on the Efficiency of Five Largest Seaports in Korea)

  • 나호수;이우;이경수
    • 한국항만경제학회지
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    • 제24권4호
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    • pp.25-46
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    • 2008
  • 이 연구는 DEA방식을 사용하여 1997년부터 2006년의 기간에 대하여 한국의 5대 항만의 효율성을 측정하고 아울러 맘퀴스트 생산성지수를 측정하고 비교한다. 규모에 대한 수익불변(CRS)과 규모에 대한 수익가변(VRS)을 가정하여 항만의 효율성수준을 측정한다. 부산이 가장 효율성이 높은 항만으로 측정되었다. 발견된 내용은 다음과 같다. 1)부산항, 인천항, 울산항은 CRS와 VRS에서 효율적인 항만으로 나타났다. 2)광양항은 효율적인 항만에 비하여 4.3%정도 낮은 효율성을 보여 주었다. 3)포항항은 효율적인 항만에 비해 27.3% 낮은 효율성을 보여 주었다. 4)한국의 5대 항만의 총요소생산성은 1997년에서 2006년 사이에 매년 3.1%정도씩 낮아졌다. 몇 가지의 정책함의는 다음과 같다. 1)부산항이 광양항보다 효율적으로 나타났는데 이는 두 지역경제의 경제활동의 차이를 반영하는 것으로 보인다. 2)1997년에서 2007년 사이에 한국의 5대 항만은 전반부의 기간에는 1997년의 한국의 금융위기로 인하여 낮은 효율성 수준을 보여주었으나, 후반부의 기간에는 경제회복으로 더 높은 효율성을 시현하였다. 미래의 연구에서는 더 풍부하고 신뢰성 있는 자료를 활용하여 한국의 항만의 특징을 더 잘 이해하도록 다양한 접근방법이 적용되기를 기대한다.

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The Prospects of International Cities in China

  • Zhou, Yi-Xing
    • 지역연구
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    • 제15권2호
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    • pp.131-153
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    • 1999
  • Since 1980's there have been two trends that obviously developed in the would -- economics globalization and urban internationalization. China, with is reform and opening-up policy and rapid economic growth, keeps pace with these two trends. The term "International City" has no putative standard or definition. If we make an analogue of urban functional hierarchy in the world with a pyramid, the International Citiesa are the few elites on its top. The highest level international cities can be called "World City" or "Global City". In today's new international division of labor, they are diversified leading cities with control capacity on a world scale, like New York, London, and Tokyo. The secondary international cities are either diversified cities with influence and regulative functions on multinational scale or specialized cities on politics, economics, culture, or other aspects with worldwide impact. Judged by different criteria, there is no city that is qualified as International City with the exception of Hong Kong, which was returned to the P.R. of China in 1997. Nevertheless, Some favorable conditions for the development of the international city still exist in China. This country is already the sixth largest economic entity in the world, and the second largest economic entity in the world, and the second largest one if GNP estimated by ppp. Furthermore its import and export value make up for 40% of its GNP, indicating that China is repidly merging into global economy. In this 1, 2 billion-population country, the difference of economic levels between urban and rural, coastal and inland regions is so big that a few metropolises in the coastal region have the possibilities and potentials to develop into international cities regardless of rather low GNP per capita of the whole country. This article will focus on analysis from several perspectives, such as the proportion of foreign trade values in GDP, the proportion of imports and exports by foreign funded enterprises in total foreign trade value; distribution of the 500 largest foreign-funded enterprises; distribution of the 500 enterprises with largest import and export values; distrigbution of foreign computer and telecom companies with offices in China; the number of outward flights per week and the international tourists; the value of foreign capital used in cities and so on. From this analysis, it is predicted that Chinese international cities will surely emergy from the eastern coastal regions and they must be the core cities of metropolitan interlocking regions that have been formed or in the process of forming. Those international cities will arise from south to north in turn : Hong Kong-Guangzhu, Shanghai, Beijing-Tianjin, and perhaps the last one is Dalian-Shenyang. The other side of this issue is that there is a long way for the coming international cities in China except Hong Kong. At least China and these core cities must continually devote to (1) improve the regional composition of foreign capital sources. (2) improve the composition of export commodities. (3) improve the investment environment (including hard and soft environment) to attract more transnational corporations to settle. (4) deepen the reform of state-owned enterprises and establish Chinese own transnational corporations to enter the world market.ons to enter the world market.

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해수면 상승에 따른 경제적 피해 비용 및 최적 해안 방어 비율 추정 -제주도를 대상으로- (Economic Impacts of Sea-level Rise and Optimal Protection on Jeju Island)

  • 민동기;조광우
    • 자원ㆍ환경경제연구
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    • 제22권1호
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    • pp.127-145
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    • 2013
  • 본 연구는 FUND모형을 이용하여 우리나라의 제주도를 대상으로 해수면 상승에 따른 경제적 피해 비용 및 최적 해안 방어 비율을 도출하였다. 대부분의 기존 연구들은 기후변화에 따른 해수면 상승의 경제적 피해 및 이를 방어하기 위한 최적 해안 방어 비율을 분석하기 위한 연구 대상을 전 세계나 대륙 중심으로 분석하여 개별 국가의 대응 정책에 활용하기에는 한계가 있다. 따라서 본 연구에서는 우리나라를 대상으로 해수면 상승에 따른 경제적 피해 비용 및 최적 해안 방어 비율을 분석하기 위한 시도로 FUND모형을 우리나라에 적용하기 위한 지표 값들을 도출하고 이를 토대로 제주도를 대상으로 해수면 상승에 따른 경제적 피해 비용 및 최적 해안 방어 비율을 분석하였다. 2100년까지의 분석기간 동안 시나리오별로 해수면 상승에 따른 범람 면적은 약 2.01%~2.25%이고 토지 가치로는 6.4%~7.2%로 상대적으로 높아 범람 지역이 경제활동이 활발한 지역임을 보였다. 추정된 최적 해안 방어 비율을 보면 제주시가 87.16%~87.92%로 서귀포시 73.32%~75.47%보다 높다. 비록 제주시의 해안선의 길이가 서귀포시에 비하여 더 길어 해안 방어 비용이 더 필요하지만 제주시의 경제적 피해 규모가 더 크기 때문에 해안 방어 가치가 더 큼을 보여주었다.

수자원분야 예비타당성 조사 정책효과 분석 방향 (Preliminary Feasibility Study for Water Resources Policy Effect Analysis Direction)

  • 성연정;최승안;권현한;정영훈
    • 한국방재안전학회논문집
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    • 제14권3호
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    • pp.1-16
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    • 2021
  • 최근 기후변화로 인한 수자원 확보의 불확실성과 생태환경의 변화에 따라 안전성과 공공성을 고려한 수자원 분야에 대형 사업이 요구된다. 이러한 대형 사업가운데 예비타당성사업에 해당되는 사업은 국가예산낭비 예방의 목적으로 경제성분석과, 정책성분석, 지역균형발전 분석에 기반한 종합분석에 의하여 사업추진이 결정된다. 그러나 대부분 예비타당성분석에 의한 결과는 경제성분석에 크게 의존하는 경향을 보여 비수도권 지역에서는 예비타당성조사를 통과하지 못하는 경우가 있었다. 이러한 점을 보완하기 위해 한국개발연구원에서는 정책성분석의 비중을 높게 두는 수자원부문 사업의 예비타당성조사 표준지침을 수정하였다. 따라서 본 연구에서는 기존 수행된 예비타당성조사에 대한 사례를 분석하고 수자원부문 사업의 예비타당성조사에서 정책성분석의 방향을 제시하는 것이 목표이다. 이에 지난 2002년부터 2019년까지 18년간 수행된 수자원분야 예비타당성 사례조사를 수행하였고, 경제성분석에 포함되지 않는 편익항목을 이용하여 정책적효과 분석방안을 제시하였다.

An Economic Evaluation of Thread Embedding Acupuncture for the Treatment of Lumbar Herniated Intervertebral Disc in a Randomized Controlled Clinical Trial

  • Kim, Ha-Na;Kim, Jun-Yeon;Park, Kyeong-Ju;Hwang, Ji-Min;Jang, Jun-Yeong;Jo, Min-Gi;Ko, Min-Jung;Chae, Sang-Yeup;Kim, Jung-Hyun;Goo, Bonhyuk;Park, Yeon-Cheol;Seo, Byung-Kwan;Baek, Yong-Hyeon;Nam, Sang-Soo
    • Journal of Acupuncture Research
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    • 제38권4호
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    • pp.312-319
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    • 2021
  • Background: Lumbar herniated intervertebral disc (LHIVD) is a frequently presented condition/disease in Korean medical institutions. In this study, the economics of thread embedding acupuncture (TEA) was evaluated in a randomized controlled trial comparing TEA with sham TEA (STEA). Methods: This economic evaluation was analyzed from a limited social perspective, and the per-protocol set was from a basic analysis perspective. The cost-effectiveness analysis was based on the change in visual analog scale score, and the cost-utility analysis was based on the quality-adjusted life years. The final results were expressed as the average cost-effectiveness ratio and incremental cost-effectiveness ratio, and furthermore sensitivity analysis was performed to confirm the robustness of the results observed. Results: The cost-effectiveness analysis showed that TEA was 9,908 won lower than STEA, while the decrease in 100 mm visual analog scale score was 8.5 mm greater in the TEA group compared with the STEA group (p > 0.05). The cost-utility analysis showed that TEA was 9,908 won lower than STEA, while the quality-adjusted life years of TEA was 0.0026 years higher than STEA (p > 0.05). These results were robust in the sensitivity analysis, but were not statistically significant. Conclusion: In treating LHIVD, TEA appeared to have cost-effectiveness and cost-utility compared with STEA. However, there were no significant differences between the groups in terms of cost, effectiveness, and utility indicators. Therefore, results must be interpreted prudently; this study was the 1st to conduct an economic evaluation of TEA for LHIVD.

어항투자사업의 경제성 평가에 관한 연구 (The Study on the Economic Appraisal of Fishing Port Investments)

  • 정형찬
    • 수산경영론집
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    • 제14권2호
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    • pp.15-68
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    • 1983
  • From the economic point of view the fishing port is the complex of installations on land, organized to serve the fishing fleet and its cargo, and is the main link in the production chain of all components of the fishing industry, with the aim of achieving the planned targets with the minimum cost. Fishing port investment decisions have had significant impact on the development aims of Korean fisheries. Fishing port investments in Korea are made mostly by public or semipublic port authorities. Such investments should be judged not purely on the basis of financial profitability but rather on the extent to which they serve the development aims of the fishing industry. This makes the economic appraisal process more complex and presents certain problems in correctly quantifying the economic costs and benefits of the fishing port projects. This study concentrates more on the theoretical economic appraisal models than on the purely financial aspects of fishing port investments and points out the difference between the two approaches. In the result, there is clearly an element of judgment as to whether or not a shadow price needs to be used in estimating economic benefits and costs. From this viewpoint, some attempts are made to provide definitions of the possible economic benefits and costs, and methods for estimating and evaluating them in Part III and IV. Especially queueing theory is applied in the calculation of economic benefits. When a project is contemplated and analysis shows it to Lave a positive NPV, one question that arises is whether it should be implemented now or delayed. In this paper, the first year rate of return method is regarded as a more concise way of solving the timing of investment, At the end of Part IV, risk analysis of fishing port investments is considered. It can be handled in a number of ways, ranging from informal judgment to complex statistical analyses involving large-scale computer models, This paper recommends that evaluators of fishing port investments use the sensitivity analysis indicating exactly how much NPV will change in response to a given change in an input variable, other things held constant. Decisions regarding the amount of capacity to provide must be made in fishing port investments. Providing too much service would involve excessive capital costs. On the other hand, not providing enough service capacity would cause the waiting line of fishing vessels to become excessively long at times. Therefore, in Part V, the optimal number of berths and berth productivity in fishing port are defined as follows: Minimize E(TC) = E(WC)+E(SC) The minimum of this function is the solution and that is the optimal number of berth and berth productivity in fishing port.

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국방획득사업 경제성 분석에 관한 연구 -○○유도무기사업 사례를 중심으로- (A Study on the Economic Analysis of the Defense Acquisition Projects -Focued on ○○ Guided Missile-)

  • 임용환
    • 한국산학기술학회논문지
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    • 제19권10호
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    • pp.394-400
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    • 2018
  • 최근 방위력 증강을 위해 대규모 무기체계 획득사업을 추진하면서 큰 폭의 국방예산 증액이 예상되고 있으며, 이러한 무기체계 획득에 필요한 재원 확보를 위해 국방예산의 효율화 필요성이 제기되고 있다. 또한 국방획득사업의 예산 절감뿐만 아니라 해외 수출가능성, 고용창출 효과 등 국내 경제에 영향을 미치는 경제성 요소에 대한 관심이 높아지고 있다. 이러한 요구에 부응하기 위해 국방획득사업 추진 시 비용편익 분석, 경제적 파급효과 등을 고려한 경제성 분석을 검토하고 있으나, 아직까지 국방획득사업의 특성을 고려한 경제성 분석 방법론에 대한 연구는 초기 단계인 실정이다. 본 연구에서는 국방획득사업의 경제성 분석을 위한 방법론을 제안하고, 국지도발에 대비해서 추진하고 있는 ${\bigcirc}{\bigcirc}$유도무기에 대한 경제성 분석 실증연구를 수행하였다. 본 연구에서 제안한 경제성 분석 방법은 그동안 다수의 무기체계 획득사업에서 수행해왔던 비용 대 효과분석을 보다 일반적인 비용편익 분석방법과 연계하여 그 분석 결과를 제공함으로써, 향후 보다 포괄적이고 신뢰성 있는 무기체계 획득사업 경제성 분석 확립에 본 연구가 개념적 방법론적으로 다소간 기여할 수 있을 것으로 판단된다.

Railway Governance and Power Structure in China

  • Lee, Jinjing
    • International Journal of Railway
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    • 제1권4호
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    • pp.129-133
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    • 2008
  • Over the last $15{\sim}20$years, many countries have adopted policies of railway privatization to keep up with increasing competition from road and air transport. Although each country and case has its own history, market characteristics, political context as well as administrative process, railway privatizations (including railway restructure, concession etc.) in the west usually are accompanied with the establishment of new regulatory regimes. Therefore, railway governance has been innovating towards an interaction of government, regulator, industry bodies, user groups, trade unions and other interested groups within the regulatory framework. However, it is not the case in China. Although China had seen a partial privatization in some branch lines and is experiencing a much larger-scale privatization by establishing joint-ventures to build and operate high-speed passenger lines and implementing an asset-based securitization program, administrative control still occupies absolutely dominant position in the railway governance in China. Ministry of Railway (MOR) acts as the administrator, operator as well as regulator. There is no national policy that clearly positions railway in the transportation network and clarifies the role of government in railway development. There is also little participation from interested groups in the railway policy making, pricing, service standard or safety matter. Railway in China is solely governed by the mere executive agency. Efficiency-focused economic perspective explanation is far from satisfaction. A wider research perspective from political and social regime is of great potential to better explain and solve the problem. In the west, separation and constrains of power had long been established as a fundamental rule. In addition to internal separation of political power(legislation, execution and jurisdiction), rise of corporation in the 19th century and association revolution in the 20th century greatly fostered the growth of economic and social power. Therefore, political, social and economic organizations cooperate and compete with each other, which leads to a balanced and resonable power structure. While in China, political power, mainly party-controlled administrative power has been keeping a dominated position since the time of plan economy. Although the economic reform promoted the growth of economic power of enterprises, it is still not strong enough to compete with political power. Furthermore, under rigid political control, social organizations usually are affiliated to government, independent social power is still too weak to function. So, duo to the limited and slow reform in political and social regime in China, there is an unbalanced power structure within which political power is dominant, economic power expanding while social power still absent. Totally different power structure in China determines the fundamental institutional environment of her railway privatization and governance. It is expected that the exploration of who act behind railway governance and their acting strength (a power theory) will present us a better picture of railway governance as a relevant transportation mode. The paper first examines the railway governance in China and preliminarily establishes a linkage between railway governance and its fundamental institutional environment, i.e. power structure in a specific country. Secondly, the reason why there is no national policy in China is explored in the view of political power. In China, legislative power is more symbolic while party-controlled administrative power dominates political process and plays a fundamental role in Chinese railway governance. And then, in the part three railway finance reform is analyzed in the view of economic power, esp. the relationship of political power and economic power.

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국내진출 해외기업들의 R&D관련 투자규모 결정요인에 관한 연구 (A Study on Determinant Factors of Foreign Firm's R&D Investment Scale in Korean Market)

  • 최순권
    • 무역상무연구
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    • 제38권
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    • pp.377-408
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    • 2008
  • Globalization of R&D activities of multinational firms is becoming important in compared with the past, because of increasing globalization of world economy. So, every country tries to attract foreign investment including R&D activities. In this paper, effects of several factors, which determine the scale of foreign subsidiary's R&D activities in local market, are analyzed. Through the review of previous literature, I found that three groups of determinant factors. The first one is the factor which is related to characteristics of local market, such as competitive situation of local market, accessability to research institutions, etc. The second group is the factor which is related to relationship between foreign subsidiary and its mother company. The dominant factors of this group are operation strategy of foreign subsidiary, competitiveness of mother firm, and equity structure of foreign subsidiary. Finally the characteristics of industry affect to the scale of foreign subsidiary's R&D activities. Among these factors, 6 factors are chosen to investigate empirically. For the empirical investigation, 107 foreign subsidiaries among KOITA(Korea Industrial Technology Association)'s list are chosen. Each subsidiary has more than 50% of foreign equity and implement R&D activities in Korea. The results show that sales volume of foreign subsidiary is dominant influencing factor in determining scale of R&D activities in Korean market. And also I found that currently established firms are implementing more R&D activities than old established firms. This is quite interesting finding. However, R&D activities of foreign subsidiary are not vitalized in Korean market. It probably means that Korean government and Korean business partners have to make effort to enhance foreign firms/ R&D activities, because it could contribute technological and economic development of Korean market.

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