• Title/Summary/Keyword: operations efficiency

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The Theses on the Methodological Aspects of Financial Analysis of Corporation in the conditions of inflation

  • Elena Nikolaevna VYBOROVA
    • East Asian Journal of Business Economics (EAJBE)
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    • v.11 no.4
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    • pp.19-28
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    • 2023
  • Purpose - research the main methods of financial analysis of corporation in the condition of inflationary processes: the analysis of financial sustainability, liquidity, profitability and etc. Research design, Data, and methodology - the main methodical aspects of financial analysis of operations in the conditions of inflation, their efficiency are presented in the theses. Also the main financial indicators are generalized and systematized with the factor of inflation. The general scheme of adjusting the analysis of financial stability for the factor of inflation is presented. Result - The specifics of adjusting the company's assets and liabilities for the factor of inflation during the analysis of prospective financial stability are details revealed in the article. The features of a comprehensive prospective assessment of liquidity and the financial stability are determined. Conclusion - The account of factor of inflations in the financial operations enable reduce the losses, to identify the price of price strategy on the market, to analyze the problematic situations and develop scenarios for the development of the organization's activities in these conditions. The article the limitations and recommendations for adjusting for the factor of inflation are presented, including the necessary to clearly define the levels of their detail, since the study may be overloaded with calculations.

Case study and implications for AI-powered predictive maintenance in the railroad industry (철도산업에서 AI기반 예측 유지보수를 위한 사례 연구 및 시사점)

  • Eun-Kyung Park
    • The Journal of the Korea institute of electronic communication sciences
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    • v.19 no.4
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    • pp.693-700
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    • 2024
  • This study aims to analyze the concept and application of AI-based predictive maintenance in the railroad industry and draw implications from it. Focusing on the adoption of AI-based maintenance systems by the Korea Railroad Corporation and Seoul Metro, we examined how AI technology can improve the efficiency and safety of railroad operations. We also compared and analyzed the application of AI technology in the European railroad industry through the cases of Deutsche Bahn in Germany and SNCF in France. The study found that AI-powered predictive maintenance contributes to reducing the frequency of breakdowns, reducing maintenance costs, and increasing the reliability of railroad operations.

A Study on the Development of High Efficiency Anti-Vibration Boring Bar (고능률 방진 보링바 개발에 관한 연구)

  • 최춘규;이우영;최성주;이동주
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.109-112
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    • 1995
  • This paper analyzes high efficiency anti-vibration boring bars which increase stability against chatter vibration in boring operations. Structural analysis and mathematical modeling with considering dynamic properties for three types of existing boring bars are performed to search for optimal design parameters. The purpose of this paper is to find out design parameters for high efficiency anti-vibration boring bar.

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Information Technology Implementation and Operational Efficiency

  • Kwak, Jin Kyung
    • Management Science and Financial Engineering
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    • v.19 no.2
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    • pp.13-18
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    • 2013
  • In this paper, we analyze the relationship between implementation of information technology and inventory turnover as a measure of operational efficiency. We build a regression model including a dummy variable that indicates whether a firm has been nominated for being good at implementing information technology. By using publicly available data, we have conducted an extensive empirical analysis and found that firms' using information technology is not likely to affect inventory turnover significantly. This result implies that we have to take careful consideration in adapting information technology.

Redesigning nozzle propeller of trawl vessel for improving towing speed (트롤어선의 예망속도 향상을 위한 추진기 구조개선)

  • Hong, Jin-Keun;Kang, Il-Kwon;Kim, Hyung-Seok;Jeong, Seong-Jae
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.46 no.4
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    • pp.476-486
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    • 2010
  • Fishing efficiency of a trawl vessel can be enhanced by increasing the swept area per unit time, which can be attained either by increasing the mouth size of the net, or by increasing the towing speed. To improve fishing and fuel efficiency of trawl vessels targeting fishes of greater mobility, in which the towing speed is more critical in determining fishing efficiency, we conducted a series of model tests to evaluate the performance of the newly-designed nozzle propeller before installing it in a trawl vessel to verify its towing speed and fuel efficiency in the sea. By conducting further model tests in the experimental basin, we redesigned the propeller of stern trawler to improve the resistance and propulsion performance. Through actual fishing operations, we evaluated the improvement in fuel and fishing efficiency by installing the new nozzle propeller. The trawling speed increased by 0.6kts at the same engine power (RPM), while the engine margin increased by more than 20%. The increased towing speed by installing the redesigned propeller is expected to enhance fishing performance through increasing the number of hauling- and casting operations per unit times, while shortening the towing duration. Analysis of the Catch-Per-Unit-Effort (CPUE) data indicated that the mean CPUE of trawl fishery increased from 3.04kg/m in year 2007 to 6.15kg/m in year 2008, confirming enhanced fishing efficiency by adopting the redesigned propeller.

The Efficiency and Business Strategy of Contract-Foodservice Operations using Data Envelopment Analysis (DEA기법을 도입한 위탁 급식 점포의 효율성과 사업 전략에 관한 연구)

  • Choi, Kyu-Wan;Park, Ju-Yeon
    • Journal of the East Asian Society of Dietary Life
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    • v.17 no.5
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    • pp.727-737
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    • 2007
  • The aims of this study was to suggest a new efficiency measurement indicator for evaluating the management efficiency of decision making units(DMUs) in the contract foodservice industry. The data envelopment analysis(DEA) model which considers multiple inputs and outputs and looking for benchmarks, was used to compare the productivity of DMUs. We considered sales, profits, and customer satisfaction as output variables and it adopted food cost, labor cost and administrative expense as input variables. The results of applying DEA revealed relatively efficient types of business and service types. The efficiency of school units was highest and the mired service type was the most efficient one. In this study the CCR model efficiency was analysed with profit and the customer satisfaction index by the matrix method. DEA efficiency was correlated with profit but there was no correlation between DEA efficiency and the customer satisfaction index.

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Characteristics of transmission efficiency in power driveline of agricultural tractors

  • I. H. Ryu;Kim, D. C.;Kim, K. U.
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 2000.11b
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    • pp.132-138
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    • 2000
  • Complex gear shifting and high speed-reduction ratio reduce the transmission efficiency in power driveline of agricultural tractors. According to a field test, the power transmission efficiency of a tractor in transporting operations was estimated about 70%. However, the actual efficiency was found by the experiment to fluctuate in a range of 56 to 87%. Therefore, the constant efficiency model commonly used for a simulation of power drivelines is not likely to simulate its performance more accurately. In order to predict power transmission efficiency more accurately, a new model was proposed and the new concepts of the maximum efficiency and sticking torque were introduced. The error mean between the measured and the predicted efficiencies was about 2.3% in mean. The new model reflecting the transmission characteristics in the power driveline of tractors could be used to analyze and predict the power transmission performance of tractors more accurately.

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Measuring production efficiency using Data Envelopment Analysis : The case of public Corporation Medical Centers (자료포락분석(DEA)을 이용한 효율성 측정 - 지방공사 의료원을 대상으로 -)

  • 박창제
    • Health Policy and Management
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    • v.6 no.2
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    • pp.91-114
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    • 1996
  • In this research, the Data Envelopment Analysis(DEA) was applied to measure production efficiency of Public Corporation Medical Centers(PCMCs) operating in Korea. The focus of this research is triple. First, identifing convenience and usefulness of DEA to measure the relative efficiency among PCMCs. Second, assessing magnitudes of the relative efficiency for each PCMC. Third, adding insights into some factors resulting inefficiency in PCMCs. Then, in this paper technical efficiency and scale efficiency measured by DEA[introduced by Charnes, Cooper, and Rhoides(1978) and Banker, Charnes, and Cooper(1984)] were analyzed and a new separate variable was introduced which makes it possible to determine whether operations were conducted in regions of increasing, constant or decresing returns to scale(in multiple input and output situations). And a multi-factor Tobit analysis was conducted to see which variables are associated with PCMC's efficiency.

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A Multistage Metaheuristic Scheduling Algorithm in LCD Module Lines Composed of Processes (세부공정으로 구성된 LCD 모듈 라인의 다중스테이지 메타휴리스틱 스케줄링 알고리즘 연구)

  • Suh, Jungdae
    • Journal of Korean Institute of Industrial Engineers
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    • v.38 no.4
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    • pp.262-275
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    • 2012
  • This paper develops a multistage scheduling algorithm for the module operation of the LCD(Liquid Crystal Display) production systems and tests the efficiency of the proposed algorithm. The module operation is a multistage form composed of multiple sub operations of processes, and each stage is consists of multiple lines with the same kinds of machines. This paper presents a mathematical modeling reflecting the constraints of the LCD module operation and develops a multistage scheduling algorithm based on tabu search metaheuristic approach. For this purpose, an production order is assigned to a line of the sub operations and a sequence of the assigned order is rearranged to draw an efficient schedule. Simulation experiments test performance measures and show the efficiency of the proposed algorithm.

A Study on the Structural Efficiency Evaluation of Naval Weapon Systems through DEA Method (DEA기법을 이용한 함정무기체계의 구조적 효율성 평가방안 연구)

  • You, Youn-Jin;Choi, Seok-Cheol
    • Journal of the military operations research society of Korea
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    • v.36 no.3
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    • pp.1-13
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    • 2010
  • DEA method has been widely applied on civilian and defense side for efficiency analysis of organizations and programs(project). For many years Defense Industry, military hospital and military construction parts have been analyzed by using DEA method. In this paper we review and propose a method of warship evaluation through DEA method. The evaluation method proposed above can provide plenty of proper information for ROC decision, AOA and source selection on weapon acquisition.