• Title/Summary/Keyword: cost calculation standard

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A Study on Optimization of Crankshaft in Diesel Engine (디이젤 엔진의 크랭크축 최적설계에 관한 연구)

  • Cho, S.B.;Ahn, S.H.;Yoo, H.S.
    • Transactions of the Korean Society of Automotive Engineers
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    • v.3 no.5
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    • pp.10-16
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    • 1995
  • In this study, the optimum design is carried out upon the crankshaft of in-line 6-cylinder internal combustion diesel engine with the mechanical analysis for the layout design, which is standard calculation whose process contains quadratic curve fitting method and quasi newton method about cost function, design variables and constraint conditions, Without finite element analysis, this process in wich mechanical analysis is performed upon the most critical part in crankshaft gives necessary and satisfied output in layout design and saves time and cost in developing a new diesel engine. In this study, also, the 3-dimensional finite element method is used in confirming the standard calculation for the optimization of crankshaft and the shape optimization in crankweb is obtained.

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A Study on Analysis of Construction Monitoring Cost and Improvement Measures of Railway Tunnel Construction in Seoul (서울시 철도터널 건설공사의 공사계측비 분석 및 개선방안 연구)

  • Jong-Tae Woo
    • Journal of the Society of Disaster Information
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    • v.19 no.1
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    • pp.18-30
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    • 2023
  • Purpose: This study is to contribute to the development of monitoring technology through the increase of confidence in construction monitoring by deriving the analysis of construction monitoring cost and improvement measures of railway tunnel construction in Seoul. Method: It presents the status on design and contract of construction monitoring cost, status on application construction monitoring cost and its analysis, analysis on safety management cost and quality management cost, expansion of application of the price calculation standard for monitoring management services to improve this, and monitoring for direct order of ordering organization. Results: If the monitoring management service that was meanwhile ordered as included in the construction work is performed by the directly selected company of ordering organization through the preliminary screening for bidding qualification, then the improvement of monitoring quality and the accurate monitoring data can be secured. Conclusion: For the price calculation standard for monitoring management service, the application of actual cost addition method under the Engineering Promotion Act and the calculation standard of monitoring management cost for standard estimation for ground survey should be extended through the direct order of ordering organization, not the method to be included in the net construction cost where it is performed by a subcontractor via contractor.

An Estimation of the Standard Cost of Project Management of Empowerment Sector in Comprehensive Rural Village Development Project (일반농산어촌개발 지역역량강화사업비의 적정요율 산정)

  • Choi, Young-Wan;Park, Hyun-Yong;Kim, Young-Joo
    • Journal of Korean Society of Rural Planning
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    • v.19 no.3
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    • pp.131-144
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    • 2013
  • The existing standard cost of project management of empowerment sector in general rural development project has problems with standard cost system without considering characteristics of empowerment project and unclear division of works. These problems are a lot of trouble to fulfill the project. Thus, it needs an arrangement of standard cost considering detailed characteristics of project management in the empowerment sector. The contents and results of this study can be summarized as follows. 1) To set accurate standard cost, we carried out three-step processes, such as elicitation of standard works, calculation of workload and determination of standard cost. (1) In an investigation of 30 rural area dividing 8 parts about an workload of empowerment project, an average workload is 1,499 hours. (2) Based on this results, the standard cost is calculated at 15% of project cost in over 600 million won, at 28.75% of project cost in under 500 million won, by standards of empowerment project cost. 2) It set the responsibility management cost to 15% of empowerment project cost considering existing awareness, workload and work professionalism of project management. Based on the results, It suggested the practical use as basis for efficient management of the future empowerment projects. To achieve this, It needs to promote maximizing results on the whole project through the legalization processes including amendment of existing regulations.

The Product Standard Costs System Constructionby Group and Application of Small and Medium Business (중소기업의 제품그룹별 표준원가시스템 구축 및 활용)

  • Kim, Pan-Soo
    • Journal of the Korea Safety Management & Science
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    • v.13 no.3
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    • pp.153-168
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    • 2011
  • In medium and small firm, the management system which is simple and where there is a practicality is required Ill)re than the management system which is complicated and minute of the centered around large company so that the introduction of the standard costs can be activated and it can be usefully used as a tool of management decisions. A difference between the standard costs introduction plan proposed in this paper and the preexistance study literature are as follows. In this paper, by breaking from the whole cost accounting aiming at all item, that is the traditional introduction method, and presenting the product cost accounting method by group the standards setting object was minimized and simplified. In this way, if the standards setting object is simplified, it is quick at the perimeter environment change as the little man power and flexibly it corresponds to and the cost information calculation which is exact with the setting up and maintenance of the efficient cost standard becomes available. As a result of applying for real through S corp., the usability of the method that the standard costs introduction method proposed in this paper produced the standard costs relatively short within period, it manages was verified. And the standard costs introduction method proposed in this paper went by the various cost information for each products, the management class did the management will decision which was objective and reasonable in the putting first.

Application of Accrual Basis for Calculation of Prolongation Cost in Construction Projects (공기연장 추가간접비 산정기준의 발생주의방식 적용 연구)

  • Jeong, Kichang;Lee, Jaeseob
    • Korean Journal of Construction Engineering and Management
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    • v.19 no.5
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    • pp.111-120
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    • 2018
  • Recently, Domestic public construction projects are experiencing a great deal of disputes because of the growing uncertainty about the criteria for calculating the prolongation cost. In addition, researchers have been studying various systems and proper cost estimates in an effort to reduce the uncertainty of these systems and the occurrence of disputes. However, there is no standard yet for social consensus. Meanwhile, The study on the classification system according to the recognition standard of accounting has been systematically studied. As a result, the concepts of accrual and cash basis are defined separately. The purpose of this study is to verify the possibility of applying the concept of 'accrual basis' to the Standard for calculation of prolongation cost. Therefore, As a result of analyzing the occurrence pattern of Job-site overhead cost, it is confirmed that actual costs can not be calculated by the cash-basis method. In particular, the implications of the necessity of the accrual-basis method should be more strictly indicated in the case of items such as indirect labor costs and welfare benefits. In addition, the contractor 's claim report and the appraisal report were examined. As a result, it was confirmed that the calculation situations of prolongation costs are biased to the cash-basis method. In this way, it is suggested that necessary to supplement the calculation standard of the actual costs from the point of view of accrual basis.

An Analysis of Cost and Profit of a Nursing Unit using Performance-Based Costing: Case of a General Surgical Ward in a General Hospital (시행기준 원가계산을 적용한 간호단위 원가 및 수익 인식에 관한 연구: 1개 종합병원 일반외과병동 사례를 중심으로)

  • Lim, Ji-Young
    • Journal of Korean Academy of Nursing
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    • v.38 no.1
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    • pp.161-171
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    • 2008
  • Purpose: The aim of this study was to analysize net income of a surgical nursing ward in a general hospital. Method: Data collection and analysis was conducted using a performance-based costing and activity-based costing method. Result: Direct nursing activities in the surgical ward were 68, indirect nursing activities were 10. The total cost volume of the surgical ward was calculated at \119,913,334.5. The cost volume of the allocated medical department was \91,588,200.3, and the ward consumed cost was \28,325,134.2. The revenue of the surgical nursing ward was \33,269,925.0. The expense of a surgical nursing ward was \28,325,134.2. Therefore, the net income of a surgical nursing ward was \4,944,790.8. Conclusion: We suggest that to develop a more refined nursing cost calculation model, a standard nursing cost calculation system needs to be developed.

Development of Cost Estimate System Based on the Itemized Historical Data for Rural Improvement Projects (농어촌정비사업 공종별 실적공사비 적산시스템개발)

  • 김현영;이정재;김영기;오상원;전효묵
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.40 no.3
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    • pp.35-41
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    • 1998
  • Cost estimate system Will be changed from the prime. cost calculation to the historical cost data because the present system has some problems. In this situation, each owner should prepare his own cost estimate system based on the historical cost data. In this study, the standard work items were classified and the criteria of their work amount computation were established for rural improvement projects. And also the historical cost data were collected in all range of rural improvement projects, and the database system, "HICOMS" (HIstorical COst data Management System) was built. In order to test the applicability of the HICOMS, standard work cost and contractor cost were compared. The results by HICOMS showed high significance and it was concluded that the HICOMS could be applicable for the cost estimate of the rural improvement projects. projects.

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A Study on the Standard of Estimate for Vitalizing the Natural Environment Restoration Industry (자연환경복원산업 활성화를 위한 표준품셈 연구)

  • Jin, Ki Jung;Koo, Bonhak
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.16 no.2
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    • pp.23-40
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    • 2013
  • The natural environment restoration industry has been newly included in the environment area of engineering technology. Accordingly, the enactment of a standard of estimate for determining the 'Cost plus Fixed Fee' method has become necessary for the implementation and vitalization of natural environment restoration projects. The purpose of this study is to determine the standards for which the prices for engineering projects are calculated with respect to the enactment of an engineering project standard of estimate in the natural environment restoration field. These include the scope of the technological work, standard area, manpower requirements by technical grade that are necessary for carrying out the technological tasks. Relevant laws and regulations, systems and precedent case studies were investigated and analyzed to establish a price calculation standard. The overall results of the analysis were used and applied to questionnaires, public hearings, and expert delphi techniques. The study showed the following results: The scope of the technological work was categorized into 'Biotopes', 'Eco-corridors' and 'Ecological restoration'. The standard area was set up as $1,000m^2$ for 'Biotopes' and $5,000m^2$ for 'Eco-corridors' and 'Ecological restoration'. The manpower requirements by technical grade that are necessary for carrying out the technological tasks were determined. The suitability of the costs, standard area, manpower requirements by technical grade of ordered engineering projects that are determined by applying the standard of estimate for natural environment restoration that may be enacted pursuant to this study may be effectively investigated and analyzed. Moreover, further studies on the calculation of standard prices that can ensure the stability of natural environment restoration projects will be necessary.

Study of a Online Survey System for Monitering of Construction Cost on Construction Site (건설현장 시장가격 모니터링을 위한 온라인 상시조사에 관한 기초연구)

  • Lee, Ju-hyun;Baek, Seung Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2020.06a
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    • pp.202-203
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    • 2020
  • Unlike price calculation by cost accounting, which categorizes costs into material costs, labor costs, and miscellaneous expenses to determine the construction budget price, construction cost calculation based on Construction Standard Unit Prices utilizes unit prices extracted from market prices of items from projects already completed to estimate costs of similar construction projects. Although unit price information is collected through construction site surveys to revise these construction standard unit prices every year, but due to the limitations of the site survey method, it is difficult to quickly implement the rapid changes in the construction methods and market prices. As such, an important issue that arose was the identification of work items whose prices need urgent revision. This study conducted research on factors that need to be considered when developing online survey system for monitoring construction site market prices. This study is expected to enhance convenience for users, and provide an efficient data collection and management system for administrators.

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A Study on Calculation of Combined Heat and Power on Standpoint of Nation and Independent Power Producers (국가 및 전력회사의 관점에서 열병합발전의 편익산정에 관한 연구)

  • Kim, Yong-Ha;Lee, Pyong-Ho;Kim, Young-Gil;Jo, Hyun-Mi;Woo, Sung-Min
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.5
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    • pp.905-912
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    • 2011
  • In this paper, the method on calculating benefits of combined heat and power is introduced for standard evaluation in electrical power system. This paper calculates benefits about new national viewpoint and viewpoint of independent power producers and assesses benefits of combined heat and power in Korea and In Seoul national capital area. Benefit costs are composed of avoid cost of centralized generation, line upgrading adjustment, loss adjustment and electrical power trade cost per year in earlier study, in addition trade cost of $CO_2$, construction cost of combined heat and power for accurate calculation. Benefit of combined heat and power is calculated by simulation results of real electrical power system.