• Title/Summary/Keyword: 경제규모

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An Analysis on the Efficiency and Productivity of Korean Rail Transit Authorities Using a Stochastic Cost Frontier Approach (A Comparison with the Estimation Results by DEA) (확률적 비용변경접근법을 이용한 도시철도 운영기관의 효율성과 생산성 분석 (자료포락분석기법을 이용한 추정결과와의 비교를 중심으로))

  • Kim, Min-Jung;Kim, Sung-Soo
    • Journal of Korean Society of Transportation
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    • v.23 no.5 s.83
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    • pp.15-25
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    • 2005
  • Using a stochastic cost frontier approach(SCFA), this paper annually estimates the efficiency and productivity with same data in the papers which analyze the efficiency and productivity using data envelopment analysis(DEA) to compare the results and suggest the political findings of raising the efficiency and productivity for three publicly-owned rail transit properties. the Seoul Subway Corporation (SSC), the Seoul Metropolitan Electrified Railways Sector of Korea National Railroad (SMESRS) and the Busan Urban Transit Authority (BUTA). The results show that the results of SCFA are higher than DEA for efficiency and lower for productivity in that DEA regards the stochastic error and measurement error as the inefficiency contrary to SFCA. But the political findings from these results appears to be similar as follows. First, the productivity of the three properties should be first improved by using existing technologies efficiently and then by introducing new ones. Second, the three properties should improve the technical efficiency through reducing input quantities to raise their efficiency. Finally, all the three components of the productivity such as productive efficiency change, technical change, and scale change should be considered to evaluate their productivity more correctly.

Analysis of the Efficiency of Korea's Logistics Industry: Application of Data Envelopment Analysis-Analytic Network Process (DEA-ANP) (우리나라 물류산업의 효율성 분석: DEA-ANP(Data Envelopment Analysis-Analytic Network Process)의 적용)

  • Ha, Heon-Gu;Choe, A-Yeong
    • Journal of Korean Society of Transportation
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    • v.25 no.3
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    • pp.55-63
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    • 2007
  • This paper analyzes the relative efficiency of Korea's logistics industry with the DEA-ANP model from 2003 to 2005. To measure the efficiency, this paper used the numbers of employees, fixed assets. total capital. and operating costs as input factors and sales amounts and net incomes as output factors. The average efficiency score of the entire logistics industry is 0.175, so most logistics companies in Korea should improve their current inefficiencies. The industry with the highest efficiency score is marine transportation. with an average three-year efficiency score of 0.3692. In terms of sales and high efficiency. most of the highest-ranked companies belong to the marine transportation industry, so marine transportation has the most influence on raising the efficiency score of Korea's logistics industry. To improve the inefficiency of inputs that exists overall in the logistics industry it is necessary to control excessive numbers of employees. To improve the amount of sales, it is necessary to make a policy of satisfying various logistics demands, continuous investments, and attracting foreign logistics demand: such things will help strengthen the international competitiveness of Korea's logistics industry.

A Study on the Recycling Improvement method of a Cosmetic Container in Korea (우리나라 화장품용기의 재활용 증진 전략)

  • Kim, Young-Gook;Lee, Hoon;Jung, Jae-Chun
    • Journal of the Korea Organic Resources Recycling Association
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    • v.10 no.1
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    • pp.128-138
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    • 2002
  • Waste recyling is a very important concept with waste minimization in the waste managment. Especially, recycling waste from the point of environmental and economical view is useful. The recycling part of package waste needs to continuously grow. But, cosmetic container, which is continuosly increased as waste. The difficulty of waste treatment in cosmetic industy produces complicated environment problem. Cosmetic container is difficult to recycle because it mostly made of complex material. Also, cosmetic container is difficult to separate I source and thus usually are generated mixed waste. In this study we performed an analysis on the Recycling Improvement method of a Cosmetic Container The result of this study could be summarized as follows 1) As a part of law and a system improvement, must be achieved Improvement Cosmetic law, Deposit refund system. and charge system, Technology development for recycling of a cosmetic container, Extension of refill productions, Recovery system establishment of a cosmetic container and inducement of a maker's recycling paticipation. 2) As a part of a cosmetic container design improvement, must be achieved simplification and standardize of container's cuality, Cosmetic life cycle extension, Selection of recycling materials and Cosr reduction of a cosmetic container. In conclusion, To the recycling improvement of a cosmetic container, must be achived collective development of system improvement, participation of the government and company and a consumer's recycling consciousness. Most of all, A company need to try to recycling container development of a cosmetic container.

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Study on Removal Efficiency of Complex Wastewater from Agricultural and Industrial Plant for Advanced Treatments (고도처리를 위한 농공단지 복합폐수의 처리효율 특성에 관한 연구)

  • Seo, Tae Won;Kim, Moon Suk;Park, Young Dal;Cho, Wook Sang
    • Journal of the Korea Organic Resources Recycling Association
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    • v.20 no.2
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    • pp.53-65
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    • 2012
  • This study was focused on removal efficiency of complex (or mixed) wastewater from agricultural and industrial plant for advanced treatments by HBR-II process, that was well known to be suitable to the treatment of livestock wastewater. The main purpose of this study was intended to evaluate the applicable feasibility of the HBR-II for revamping the present activated sludge process to the advanced one. And also, the settling study including the batch typed experimental column tests was performed to evaluate the coagulation stability of organic colloidal particles in wastewater. The mid-scale plant of HBR-II process between pilot and laboratory was used for this study. As F/M ratio remains constant in the range of 0.20~0.25 $BOD_5/Kg{\cdot}MLSS/Day$, the efficiency of biological treatment increased. It has been shown that the results of biodegradation study were, for removal efficiency(%), $BOD_5$ 98.4%, $COD_{Mn}$ 92.9%, SS 97.5%, T-N 91.3%, T-P 82.3%, respectively, which were relatively higher than other processes. From this study, HBR-II process would be well applied to the biological treatment of agricultural and industrial complex wastewater.

Development of Base Concrete Block for Quiet Pavement System (저소음 포장용 기층 콘크리트 블록 개발)

  • Lee, Kwan-Ho;Park, Woo-Jin;Kim, Kwang-Yeom
    • Journal of the Korean Society of Hazard Mitigation
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    • v.10 no.1
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    • pp.35-42
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    • 2010
  • The rapid economic development induced the massive road constructions, becoming bigger and high-speed of the vehicles. However, it brings lots of social problems, such as air pollutions, traffic noise and vibration. Special concrete block for the base course of asphalt pavement is needed to decrease traffic noise such as tire's explosive and vehicles sound, applying Helmholtz Resonators theory to asphalt pavement. If it is applied to the area where it happens considerable noise such as a junction, the street of a housing complex and a residential street, it is one of considerable method to solve the social requirements of noise problem. This research examines couple of laboratory tests for the sound absorption effect of the concrete block and the base concrete block. There are specimens which is fixed hall-size, space, depth as the condition of this research, and these are analysed of noise decrease effect using different condition of the first noise of each vehicle. As a result of analysis data according to vehicle noise volume, measurement distance, a form and size of the hall using the base concrete block, the use of special concrete base showed a good alternative solution for decreasing traffic noise level, from 4 dB to 9 dB.

온라인 증권거래 서비스의 고객만족 요인에 대한 실증적 연구

  • Choe, Don-Hwang;Hong, Jae-Beom;Yang, Jeong-Sik
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2005.05a
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    • pp.161-175
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    • 2005
  • 본 연구에서는 온라인 증권거래 서비스 품질과 고객만족 나아가 고객행동을 분석한 연구이다. 이를 위해 설문조사를 실시하였으며 조사원이 직접 증권사 객장을 방문하여 운라인 증권거래경험이 있는 고객을 대상으로 설문조사를 실시하였다. 이를 위해 40개 증권사, 420여개설문이 회수되었다. 분석결과, 첫째, 온라인 증권거래를 이용하는 고객층을 분석하면, 여성보다는 남성이 온라인 증권거래를 활발히 이용하고 있으며 연령별로는 40대, 50대, 30대 순으로 나타났으며 직업은 대부분 근로생활자가 많이 활용하고 있는 것으로 나타났으며 전체 50%이상이 매일 접속하고 거래하는 것으로 나타났으며 운영 규모는 1천만원이하가 다수로 나타났다. 둘째, 온라인 증권거래 서비스 품질요인으로 지각된 신뢰성, 지각된 편의성, 지각된 유형성, 지각된 응답성 순으로 고객만족에 영향을 미치는 것으로 나타났다. 지각된 신뢰성은 약속된 서비스를 정확하게 수행하는 능력에 대한 지각으로 나타내며, 지각된 편의성은 온라인증권거래를 이용하기에 얼마나 용이한 지에 대한 지각을 나타낸다. 지각된 유형성은 물적 시설, 장비, 사람, 의사소통 도구의 외형과 같은 부분에 대한 지각을 나타내는 것이다 지각된 응답성은고객을 돕고 즉각적인 서비스를 제공하려는 의지에 대한 지각을 나타낸다. 마지막으로 고객만족은 재이용이나 구전의도에 긍정적인 효과를 미치는 것으로 나타났다. 이러한 결과는 고객지향적인 온라인 증권거래 서비스 시스템 구축 및 운영이 이용확대에 중요한 요인임을 제시한다. 본 연구는 온라인 증권거래에 대한 고객만족의 탐색적인 연구로써 보다 심도 있는 연구를 위한 기초를 제공하였다는 점과 온라인 증권거래 성과측정요소로써 고객만족에 영향을 미치는 요인을 제시했다는 점에서 의미를 지닌다.에 의해 유도된 single-strand 절단을 억제하였다. 이상과 같이 간세포 일차배양에서 양파추출물은 t-BHP에 의해 유발된 간독성, 간세포 생존율 감소, 지질과산화를 농도 의존적으로 억제시켰고 또한 t-BHP에 의해 억제된 GSH-Px, GSH-Rd 및 catalase의 활성을 증가시켰다. 이와 같이 양파추출물의 간보호 및 항산화 효과는 항산화 효소, 특히 catalase의 활성 증가와 hydroxyl radical에 의해 유도된 산화억제 및 이에 따른 지질과산화 억제에 기인하는 것으로 사료된다.chno-economic paradigm)의 시각에서 제시하는 한국경제의 성장 ${\cdot}$ 고용 ${\cdot}$ 분배를 위한 정책방향은 다음과 같은 동태적발전과정으로 요약할 수 있다 : 기초과학연구능력 확충 ${\rightarrow}$ 소화 ${\cdot}$ 흡수 ${\cdot}$ 개량 ${\rightarrow}$ 토착화 능력의 배양 ${\rightarrow}$ 자체기술개발, 선진기술 도입, 산업간 및 산업내 기술확산, 국제기술협력 ${\rightarrow}$ 기술혁신의 촉진 ${\rightarrow}$ 총요소생산성과 기업경쟁력(자원 및 역량, 프로세스 경쟁력, 품질경쟁력, 시장경쟁력, 고객성과, 시장성과, 재무성과)의 제고 ${\rightarrow}$ 가격경쟁력(임금, 금리, 물류비용, 환율 등)과 비(非)가격경쟁력(디자인, 에프터서비스, 품질, 운송 등)의 제고 ${\rightarrow}$ 국가경쟁력의 제고 ${

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Busan Use Area Change Pattern Research of Costal Area (부산시 해안지역의 용도지역 변화패턴 연구)

  • Kim, Ga-Ya;Kim, Jung-Ho;Kim, Sung-Jin
    • Journal of the Korean Association of Geographic Information Studies
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    • v.10 no.1
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    • pp.136-145
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    • 2007
  • Redevelopment about land that nature green tract of land and dilapidated city equipment including greenbelt make a strong resolution in city with change of town planning area according to growth of city is consisting. Formation of city of these phenomenon is old and personality of city changes rapidly, the speed becomes fast. Phenomenon that Busan moves to neighborhood area as convenience of traffic of industrial facilities that was on spearhead of economic growth move to outer wall of city and port facilities is deterioration, as becoming decline Tuesday industry form of city in the second industry the third phenomenon that alter by the 4th happen and case of residential area old residential area of inland area change for the worse of habit be and impulse to steal is augmented in the 1970, 80 is appearing. Hereupon the result inland area which analyzes the change with the use area compared to the area where it is coming in contact to the coast the diffusion of the residential area or the business park appears area, the factory back of nine cities acts Gangseo-gu or Gijang-gun of the industry area this with the fact that it changes.

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A Study on Factors Affecting Foreign direct Investment in Korea -Focused on Hofstede's Culture Dimensions and CPI Index- (한국의 외국인직접투자에 영향을 주는 요인에 관한 연구 - 문화적 차원과 부패인식지수를 중심으로-)

  • Choi, A-Reum;Koo, Jee-Hyun
    • Journal of Digital Convergence
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    • v.15 no.6
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    • pp.1-8
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    • 2017
  • This study examined the factors influencing foreign direct investment(FDI) in OECD countries where Korea is a target country. The differences in the cultural distances of host and home countries and the difference in the perceptions of corruption have been used to identify the factors affecting foreign direct investment. As a result of the study, it was found that there are differences in foreign direct investment according to cultural dimension and corruption perceptions index. Foreign direct investment may increase or decrease depending on the cultural tendency and the higher the perceptions of corruption, the more active the investment. The smaller the power distance between host country and home country in the factors affecting foreign direct investment, the larger the number of investments and the larger the size of individualism versus collectivism. Foreign direct investment increased when the investing country's corruption perceptions index was high. The results of this study confirm that cultural and corruption perceptions can affect trade transactions. Therefore, it is necessary to consider the cultural tendency and the cultural distance in the trade transaction by confirming that the degree of culture and corruption perceptions can affect the trade transaction. And that it can influence trade and economic growth by appropriately managing social variables such as public corruption.

Evaluation Methodology of Greenhouse Gas On-Line Monitoring on Freeway (고속도로 구간의 온실가스 On-Line 모니터링 산정방법)

  • Lee, Soong-bong;Chang, Hyun-ho
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.16 no.2
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    • pp.92-104
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    • 2017
  • Previous management for speed in road traffic system was aimed only to the improvement of mobility and safety. However, consideration for the aspect of environment and energy consumption efficiency was valued less than the former ones. Nevertheless, economical damage scope caused by climate change has been increasing and it is estimated that environmental value will be increased because of the change of external circumstances. In addition, policy for reducing carbon emission in transportation system was assessed as insufficient in improving the condition of traffic road since it only focused on the transition of private vehicle into public transportation and development of eco-friendly car. Now it is the time to prepare for the adaptation strategy and precaution for the increased number of private vehicle in Korea. For this, paradigm shift in traffic operation which includes the policy not only about the mobility but also about caring environment would be needed. It is needed to be able to monitor the actual amount of greenhouse gas in real time to reduce the amount of emitted greenhouse gas in the aspect of traffic management. In this research, a methodology which can build on-line greenhouse gas emission monitoring system by using real time traffic data and predicting the circumstance in next 5 minutes was suggested.

Determination of Major Reduced Sulfur Gases Emitted from Wastes Stored in Environmental Facility Using GC/FPD (GC/FPD를 이용한 환경기초시설 폐기물의 대기중 황계열 악취물질 배출특성에 관한 연구)

  • Lee, Taeyoon;Lee, Jeakeun;Lee, Junki
    • Journal of the Korean GEO-environmental Society
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    • v.10 no.2
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    • pp.37-43
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    • 2009
  • With the economic development of Korea, sewage treatment facilities and waste food treatment facilities have been steadily increased. These facilities have positive effects such as the conservation of the water resources quality and waste food recycling while they also affect the neighborhood life with severe odor problems. Therefore, it was first collected sludge samples from 5 sewage treatment facilities and 5 waste food treatment facilities where the amounts of waste produced from above sites are relatively immense in Busan and estimate the $H_2S$ emission rates. Then it was selected 1 sample which has the highest emission rate of $H_2S$. Using flux chamber and GC/FPD analyses, it was tried to quantify the emitted amount of sulfonic gas concentration under anoxic condition. The sludge sample obtained from Noksan sewage treatment facility has the highest emission rate of $H_2S$. This sample contained 156.18 mg/kg $H_2S$. The odor compounds were analyzed using GC/FPD and the concentrations were converted to odor quotient. Among odor compounds the ratio of $CH_3SH$ (methylmercaptan) for the total odor quotient was 47.3% and considered to be the main odor compound in the sample.

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