• 제목/요약/키워드: Index of Performance Evaluation

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Evaluation of Navigational Safety Using the Integrated Seakeeping Performance Index under Loading Conditions of a Ship (선박의 적화 상태별 종합내항성능지표에 의한 항해 안전성 평가)

  • 김순갑;김정만;공길영
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.4 no.2
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    • pp.43-52
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    • 1998
  • Generally, the navigational safety of a ship under various loading conditions is evaluated by a loading manual. However, the loading manual handles only statical factors such as weight and buoyancy of ship without including any wave conditions. Practically ship's safety is much concerned with the occurrences on the rough sea as propeller racing, rolling, deck wetness, vertical acceleration, lateral acceleration, slamming and so on. The purpose of this paper is to present a synthetic and practical evaluation method of navigational safety using the integrated seakeeping performance index(ISPI) under loading conditions of ship in seaways. The method is calculated by means of the ISPI by measuring only vertical acceleration. Judgement of dangerousness is carried out for four lading conditions : homogeneous full loaded, half loaded, heavy ballast loaded, and normal ballast loaded conditions. In developing the practical evaluation system of navigational safety, it is useful to solve the difficulties in measuring factors by sensors. And by applying the evaluation diagrames, navigators are able to avoid dangerousness by keeping away of the danger encountering angle of wave direction which the diagram shows.

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A Study on the Improvement of the Criteria for the Management Evaluation Related to the Means-Efficiency of Public Library (공공도서관 수단효율성관련 경영평가기준의 개선방향에 관한 연구)

  • Jung, Won Joo;Hong, Hyun Jin
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.28 no.4
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    • pp.203-221
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    • 2017
  • This study is to suggest some improvement directions of the criteria for the management evaluation in order to contribute to the achievement of lasting value of the continuous development and publicity in regard to the public library means-efficiency. To this end, This study analyzed the means-efficiency evaluation criteria via theoretical review on business analysis of private enterprise and the analysis framework based on it. The improvement of evaluation criteria in regard to efficiency for the continuous development of public library are as follows. 1) Regardless of domestic and foreign, an efficiency index in the performance evaluation index of public library is absolutely insufficient. The sufficient indexes measuring efficiency which is appropriate for the concept of performance should be developed. 2) A flow data representing input and performance in certain time period is insufficient. Therefore, evaluation index consisted of flow data should be more developed. 3) Long term stock data is excluded in the term cost as it is the cost used for the long term such as fixed assets. However, it is useful as input data, which is realized through the perfect accounting.

The Comparative Study on Performance Evaluation of Outdoor Space for Remodeling Apartment (리모델링 공동주택단지의 외부공간 성능평가 비교 연구)

  • Kim, Ho-Yun;Lee, Sang-Suk;Yu, Joo-Eun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.19 no.4
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    • pp.1-17
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    • 2016
  • In this study, remodeling projects are perceived as a sustainable urban management policy to boost the value of old apartments and stimulate urban regeneration and development. To evaluate the physical environmental performance of external spaces of remodeled apartments, an evaluation model was developed. After applying it to the target places, the following results were obtained. First, analysis of the external space change index of the target apartments revealed that institutional standards are necessary in line with the building arrangement type, parking lot expansion method, and changes in the building-to-land ratio. Second, the score ratio as to the external space change index performance is as follows: safety (48.30); pleasantness (25.90); convenience (18.90); eco-friendliness (14.90). In other words, "safety" had the biggest score ratio. Third, to boost the external space performance of remodeled apartments, the needs of residents and neighboring environmental plans should be considered from a communality standpoint.

Development of Evaluation Methodology on the Performance of BTL Sewer Rehabilitation Projects (하수관거정비 BTL사업의 효과분석 및 방안 수립 연구)

  • Song, Ho-Myeon;Cho, Jeong-Il;Ahn, Choong-Hee
    • Journal of Korean Society of Water and Wastewater
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    • v.24 no.6
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    • pp.743-751
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    • 2010
  • It requires an interim performance assessment for BTL business of the sewerage rehabilitation which continues from 2005 till now. Means, It is necessary to make an interim performance assessment and an analysis of an business effect of the sewerage rehabilitation BTL projects which still continues, and we presented an improvement method of the new sewerage rehabilitation project in future. This paper has conducted an analysis of the business effect for 3 local government BTL projects which are completed and under operation as of now in Jincheon-Gun, Cheongju-Si and Gangjin-Gun. As a method of business effect analysis, we conducted a business effect of the 3 places using the index set which we previously set for the business effect analysis. The index set in this research was sectionalized to an improvement effect of operating wastewater treatment plant, an benefit effect of the direct cost, an benefit effect of the indirect cost and an environment friendly effect. We, in this paper, conducted an business effect analysis for 3 sewerage rehabilitation BTL projects which are completed or under operation recently as a demonstration, however we judge that an business effect analysis shall be conducted in a stage that a significant time for operation has passed since the completion of the construction in order to induce an actual business effect of the sewerage rehabilitation BTL project.

The Effect of Project Complexity, Team Members' Structure, and Process Index on Efficiency of System Integration Projects

  • Hong, Han-Kuk;Park, Chul-Jae;Leem, Byung-Hak
    • Journal of information and communication convergence engineering
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    • v.6 no.3
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    • pp.323-326
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    • 2008
  • Data Envelopment Analysis (DEA) is a theoretically sound framework for performance analysis that offers many advantages over traditional methods such as performance ratios and regression analysis. Largely the result of multidisciplinary research during the last three decades in economics, engineering and management, DEA is best described as an effective new way of visualizing and analyzing performance data. Besides, overseas information technology companies have aggressively tried to enter the domestic market. In the age of globalization and high competition, it is imperative that the system integration (SI) companies need to introduce the performance evaluation models of SI projects, including Capability Maturity Model and Software Process Improvement and Capability Determination, to gain a competitive advantage. Therefore, it makes our research regarding evaluation of SI projects very opportune. The purpose of the study is not only to evaluate efficiency of each project by DEA but also to gain insight into various factors such as project complexity, team members' man-months structure, and process index(project management index) that link to the projects performance.

Energy Performance Evaluation of a New Commercial Building using Calibrated As-built Simulation with Monitoring Data (건물에너지 모니터링 및 시뮬레이션을 활용한 신축건물의 에너지성능평가)

  • Song, Su-Won
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.20 no.3
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    • pp.155-166
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    • 2008
  • The performance evaluation of a new building is becoming more important because efficient design alone is often not sufficient to deliver an efficient building. However, there is a lack of standard evaluation methods to measure the energy performance of a new construction that has Energy Conservation Design Measures(ECDMs). This study presents an enhanced method based on calibrated whole-building simulation for evaluating the energy performance of new commercial buildings and demonstrates its use using a case-study building, including: an Energy Use Index(EUI) comparison with sub-metered data and an evaluation of the performance of specific ECDMs. The use of this method has determined that the case-study building was shown to use approximately 47% less energy than the base-case building that has the same shape and function as the case-study building(i.e., calibrated as-built simulation mode]), but doesn't include the simulated ECDMs.

A Study on the Development of Smart Water Grid Key Performance Index for the Implementation of Smart City (스마트시티 구현을 위한 스마트워터그리드 성과평가지표 개발에 관한 연구)

  • Jung, Seung Kwon;Jun, Kye Won
    • Journal of Korean Society of Disaster and Security
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    • v.13 no.1
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    • pp.25-39
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    • 2020
  • Despite the global promotion of Smart City, there is currently no standard for smart water grid development, and it is not possible to judge the success of Smart City. There is a clear need to establish the requirements and goals of the Smart Water Grid and accurately diagnose and improve the limitations and problems of the existing Smart Water Grid. For this purpose, it is very important to use the index suitable for Smart Water Grid goals. In this study, we developed Smart Water Grid Index which can be used to evaluate the target measurement and attainment of Smart Water Grid and can be utilized based on the implementation plan for Smart Water Grid in the future. Through the development of the Smart Water Grid Key Performance Index (SWG KPI), we will lay the groundwork for continuous capacity evaluation of the Smart Water Grid and improve the reliability of the Index. It is expected that it will be possible to prepare and evaluate a Challenge Evaluation Card for the planned Smart Water Grid by providing an evaluation table for grid competency evaluation.

Analysis on the Apartment Investment Performance (지역별 아파트 투자성과에 관한 분석)

  • Kang, Won-Chul;Kim, Won-Hee
    • The Journal of the Korea Contents Association
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    • v.13 no.2
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    • pp.431-439
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    • 2013
  • The purpose of this study is to analyze the apartment investment performance including the risk and to verify the presence or absence of regional characteristics. This study made an analysis on the apartment investment performance by dividing it into long and short-term basis. Data collection period is 10 years from 2002 to 2012 and target area includes Gangnam and Gangbuk (southern and northern area of Seoul) and 6 metropolitan cities. For evaluating the investment performance, this study used the earning rate of 5 year 1st class national housing bond as the risk-free rate of return and 1~2 year interest rate of fixed deposit for calculating lease profit. The results of study are as follows, Treynor's Index was used in long investment performance evaluation because of regional characters non-existing in Seoul and Incheon whereas Jensen's Index was used in evaluating because of regional characters existing in 5 metropolitan cities. And Jensen's Index was used in short-term evaluation of all districts as existing regional characters in all districts. Short-term performance considering regional characteristics yielded different results of simple evaluation. Therefore, in case of simple rate of return to evaluate the performance, the recognition of that can be distorted.

Design and Performance Evaluation of an Indexing Method for Partial String Searches (문자열 부분검색을 위한 색인기법의 설계 및 성능평가)

  • Gang, Seung-Heon;Yu, Jae-Su
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.6
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    • pp.1458-1467
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    • 1999
  • Existing index structures such as extendable hashing and B+-tree do not support partial string searches perfectly. The inverted file method and the signature file method that are used in the web retrieval engine also have problems that they do not provide partial string searches and suffer from serious retrieval performance degradation respectively. In this paper, we propose an efficient index method that supports partial string searches and achieves good retrieval performance. The proposed index method is based on the Inverted file structure. It constructs the index file with patterns that result from dividing terms by two syllables to support partial string searches. We analyze the characteristics of our proposed method through simulation experiments using wide range of parameter values. We analyze the derive analytic performance evaluation models of the existing inverted file method, signature file method and the proposed index method in terms of retrieval time and storage overhead. We show through performance comparison based on analytic models that the proposed method significantly improves retrieval performance over the existing method.

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IT Investment Evaluation Using the Indices Generated from the Balanced Scorecard Strategy Map : A Method and Case (BSC 전략맵 지표를 이용한 정보기술 투자평가 : 방법론과 사례연구)

  • Choi, Doug W.;Lee, Dong-wook;Lee, Dong-Cheol
    • Journal of Korean Institute of Industrial Engineers
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    • v.31 no.2
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    • pp.143-151
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    • 2005
  • Information technology(IT) investment evaluation requires measurements from many perspectives. Except for the case of financial performance, these measurements mostly belong to the qualitative or intangible domain. The problem with IT investment evaluation lies in the fact that it is very difficult to define the qualitative properties against which to measure the performances. This paper addresses the issue of developing the set of performance indices, and defining the structural relationships between them, such that the IT investment evaluation can be done in a systematic, objective and comprehensive manner. We introduce the balanced scorecard strategy map as the backbone reference frame for the generation of performance indices and for the description of the relationships between them. Sample indices for evaluating projects from strategic perspectives are provided with a case example. A step by step follow through of the index generation process has been presented along with the case.