• Title/Summary/Keyword: Evaluation Standards

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A Study on the Evaluation of Brinell Standard Hardness Tester and Automatic Indentation Measurement System (브리넬 경도 표준 시험기 및 압입 자국 자동 측정장치의 특성 평가에 대한 연구)

  • Bahng, G.W.;Tak, Nae-Hyung
    • Journal of the Korean Society for Heat Treatment
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    • v.12 no.4
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    • pp.294-302
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    • 1999
  • Evaluation of Brinell standard hardness tester was carried out to secure its application as a national standard for Brinell hardness. Accuracies and reliabilities in load application, indenter diameter and indentation measurement were tested through evaluation of these components. The accuracies of load application for various loading conditions were within the limit of ISO and KS specifications. Errors in the indentation measurement due to the difference in personnel characters were successfully removed by utilising automatic indentation measurement system. In overall, the tester and the indentation measuring system were found to be eligible as a national standard of Brinell hardness.

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A Study on Safety Evaluation Method of Lithium Secondary Battery Module for Military Operation (리튬 2차전지 모듈의 전장운용을 위한 안전성 평가기법 연구)

  • Yoo, Eun Ji
    • Journal of the Korea Institute of Military Science and Technology
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    • v.17 no.3
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    • pp.378-386
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    • 2014
  • In this paper, safety evaluation method simulating battlefield environment was studied to verify military operability of commercial lithium secondary battery. Based on the MIL-STD-2105D and STANAG standards, safety tests of lithium secondary battery module were conducted, such as bullet impact, fragment impact, fast cook-off and slow cook-off. All results satisfied the safety evaluation criteria, founded on military standard. It suggests that the lithium secondary module has high potential to be applied in a military power source. The safety evaluation methods developed in this paper can be valuable to propose the new military standards for commercial lithium secondary batteries.

Development of Organization-level Evaluation Model and Process for Information Systems Quality (조직 수준의 정보시스템 품질평가 모형과 절차 개발)

  • Lee, Sang-Ho;Cho, Sung-Rim;Ahn, Byung-Oh
    • Journal of Information Technology Services
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    • v.7 no.4
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    • pp.151-165
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    • 2008
  • This study suggests the organization-level standard(model and process) for quality evaluation of information systems(IS) in non-use organizations despite international standards(ISO/IEC 9126 and ISO/IEC 14598) and national standards(KS X 9126 and KS X 14598) related to quality evaluation of IS. The standard in this study is composed of quality evaluation processes, a quality model, and quality metrics. The weights of the attributes and the sub-attributes in the quality model were calculated by an analytic hierarchy process(AHP). The minimum level and the target level of each metrics were determined by brainstorming of the committee. Furthermore, the case study for the investigation of the applicability and the usability of the suggested organizational standard in the real IS development project was performed. For gaining significant benefits of the standard, both the diffusion and the experience accumulation by its continuous use are needed.

A Model for Evaluating Confidence and Satisfaction of Health Information Web-Sites (건강정보 웹사이트의 신뢰성과 만족도 평가 모델)

  • Woo Young-Woon;Cho Kyoung-Won
    • The Journal of the Korea Contents Association
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    • v.6 no.9
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    • pp.42-49
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    • 2006
  • In this paper, we proposed a model to evaluate confidence and satisfaction of health information web-sites visited by general health consumers. In order to propose the evaluation model, lots of foreign and domestic researches are investigated and analyzed. Based on these analyses, confidence and satisfaction standards for the model are proposed. A process for evaluation and a method for calculation of evaluation value by the standards are proposed, too. The proposed model can be utilized as a tool for analyzing conventional health information web-sites and can be utilized as check lists for developments in case of health information web-sites under construction.

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Development of National Competency Standards for Automotive Maintenance (자동차정비직무를 위한 국가직무능력표준(NCS) 개발)

  • Jie, Myoung-Seok;Noh, Hi-Kui;Han, Young-Min
    • Transactions of the KSME C: Technology and Education
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    • v.2 no.2
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    • pp.81-87
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    • 2014
  • Automotive field specialist developed National Competency Standards for Automotive Maintenance to apply for the education and evaluation of automotive maintenance. National Competency Standards scope and system for Automotive Maintenance has been developed and provided Performance Criterion, knowledge, skill, attitude, and evaluation methods for each item. Also it has provided vocational basic knowledge level and qualification frame for automotive maintenance.

A Study on the Standards Evaluation Method Using Standards Networks (표준 연결망을 활용한 표준의 평가방법에 관한 연구)

  • Choi, Jae Jin;Chung, Soon Suk;Kim, Kwang Soo
    • Journal of Korean Society for Quality Management
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    • v.47 no.2
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    • pp.315-325
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    • 2019
  • Purpose: The purpose of this study was to propose useful standards evaluation method using standards networks by analyzing the relationship between normative references citation information list. Methods: The collected data through the survey were analyzed using social network analysis. The measurement tools used for this study were divided into three dimensions such as certificate standard, normative reference and degree centrality. Results: The results of this study are as follows; regarding the influence of standard information, It is meaningful that the research using normative reference item among the bibliography information that the standard itself possesses. The analysis of social network analysis data of population standard, normative reference and the correlation analysis with sales, a variable representing actual utilization performance, suggested the importance of the standard and how to evaluate it. Conclusion: In prioritizing standard maintenance, more efficient management will be possible if centrality figures of standard network information are analyzed and used for standard maintenance.

Nondestructive Evaluation of Residual Life of 1Cr-1Mo-0.25V Steel by Reversible Magnetic Permeability

  • K. S. Ryu;S. H. Nahm;Kim, Y. I.;K. M. Yu;Kim, Y. B.;Y. Cho;D. Son
    • Proceedings of the Korean Magnestics Society Conference
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    • 2000.09a
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    • pp.522-529
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    • 2000
  • We present a new procedure to evaluate the residual life of 1Cr-1Mo-0.25V steel by reversible magnetic permeability. The method is based on the existence of the first harmonics in the differential magnetization around the coercive force. The apparatus is based on the detection of the voltage induced in a coil using a lock-in amplifier tuned to a frequency of the exciting one. Results obtained for the first harmonics and Vickers hardness on the aged samples show that the peak interval of reversible permeability and Vickers hardness decrease as ageing time increases. The correlation between Vickers hardness and the peak interval of the reversible permeability could well be used to evaluate the residual life of 1Cr-1Mo-0.25V steel, nondestructively.

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