• Title/Summary/Keyword: important evaluation

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Performance Evaluation of Chip Breaker Utilizing Neural Network (신경망기법에 의한 칩브레이커의 성능평가)

  • Kim, Hong-Gyoo;Sim, Jae-Hyung
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.16 no.3
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    • pp.64-74
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    • 2007
  • The continuous chip in turning operation deteriorates precision of workpiece and causes a hazardous condition to operator. Thus the chip form control becomes a very important task for reliable machining process. So, grooved chip breaker is widely used to obtain reliable discontinuous chip. However, developing new cutting insert having chip breaker takes long time and needs lots of research expense due to a couple of processes such as forming, sintering, grinding and coating of product and many different evaluation tests. In this paper, performance of commercial chip breaker is evaluated with neural network which is learned with a back propagation algorithm. For the evaluation, several important elements(depth of cut, land, breadth, radius) which directly influence the chip formation were chosen among commercial chip breakers and were used as input values of neural network. With the results of these input values, the performance evaluation method was developed and applied that method to the commercial tools.

Application of Analytic Hierarchy Process to the Performance Management of University Organization (대학조직의 성과관리를 위한 계층분석과정의 적용)

  • Lee, Hyung-Seok;Kim, Non-Joong
    • Journal of the Korean Operations Research and Management Science Society
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    • v.32 no.4
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    • pp.77-88
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    • 2007
  • This study is to apply of AHP to the performance management of university organization. Especially, in the present study, the authors modeled performance evaluations for S university administration hierarchically and analyzed the weights of those. The domains of performance evaluations were divided in five domains: strategy, resource management, process, finance management, and customer management, referred to the viewpoints of BSC. The results of analysis revealed that strategy was the most important element of evaluation in the first stage and except for strategy and finance management which consist of the single element of evaluation respectively in the second stage, the efficiency of administration supporting service was the important element of evaluation. The weights of performance evaluations, however, revealed in different as the class of position. Finally this study showed that the weights of performance evaluations computed in the present study can be used as those of evaluation indices for S university administration.

A Study on Performance Test and Evaluation Technology of Tilting Vehicle (틸팅차량 성능시험 및 평가기술에 관한 연구)

  • Kim, Seog-Won;Han, Young-Jae;Kim, Young-Guk;Seo, Sung-Il;Lee, Su-Gil;Kim, Jong-Young
    • Proceedings of the KIEE Conference
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    • 2004.04a
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    • pp.272-274
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    • 2004
  • Test evaluation field of railroad system that safety and reliability are important is to verify basic performances of unit products and system that were producted according to the specifications. Also, it is important works that verify finally in respect to commercialize verifying reliability and safety. As one part of system technology, this field is to construct database based on know-how of accumulated technology till now than high technical idea and, is to construct test evaluation system of railroad system that can utilize the constructed database. According to the necessity, our researchers investigated good measuring system of foreign country and performed research on performance test and evaluation technology of high-speed tilting vehicle that suits to domestic state.

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Intelligent Cyber Education System Model using Fuzzy Theory -Centering around Learning Achievement Evaluation Function- (퍼지이론을 이용한 지능형 가상교육 시스템 모델 -학습성취도 평가모듈 중심으로-)

  • Weon Sung-Hyun;Seo Sang-Gu
    • Management & Information Systems Review
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    • v.14
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    • pp.79-99
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    • 2004
  • Cyber education system service is in the field of software service which is highlighted after the latter half of 1990'. But the progress of this service is impeded by the lack of back office which contributes to the evaluation of learning achievement and the management of learning progress. This article points out the problem of current back office which is the most important in the cyber education system, and focuses on the new intelligent learning achievement evaluation module. First, we define the cause and effect between the learning stages using by fuzzy implication which is the important part of fuzzy theory. Next, we suggest the model which generates the results of the learning achievement evaluation. This model, suggested by this article, may contribute to the development of the cyber education system by improving the current on-line education service.

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Probabilistic Reliability Evaluation of Power System using TRELSS II - Focused on Case Studies of IEEE RTS - (TRELSS를 이용한 전력계통의 확률론적 신뢰도 평가 II - IEEE RTS 사례연구를 중심으로 -)

  • Tran, Tungtinh;Kang, Sung-Rok;Choi, Jae-Sok;Jeon, Dong-Hoon;Choo, Jin-Boo
    • Proceedings of the KIEE Conference
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    • 2003.11a
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    • pp.67-70
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    • 2003
  • In recent, the importance and necessity of some studies on reliability evaluation of grid come from the recent black-out accidents occurred in the world. The quantity evaluation of transmission system reliability is very important under competitive electricity environment. The reason is that the successful operation of electric power under the deregulated electricity market depends on transmission system reliability management. The various results of many case studies for the IEEE 25buses system using the Transmission Reliability Evaluation for Large-Scale Systems(TRELSS) Version 5_1, a program made in EPRI are introduced in this paper. Some sensitivity analysis has been included. This paper suggests that the some important input parameters of the TRELSS can be determined optimally from this sensitivity analysis for high reliability level operation of a system.

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A Study on the Project Evaluation Indicators for the Efficient Integrated Rural Development in Block Grants System (포괄보조금제도하에서 효율적인 농어촌지역개발을 위한 사업평가지표 연구)

  • Lee, Joo-Yong;Kim, Sun-Joo
    • Journal of The Korean Society of Agricultural Engineers
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    • v.53 no.1
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    • pp.57-62
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    • 2011
  • Block Grants System to the agriculture sector has been started from 2010. This paper has been studied for the effective Integrated Rural Development under Block Grants System. For this, project evaluation items and indicators (PEI) were studied by internal and external example and specialist questionnaire on project evaluation. As the result of study, necessity of project, faith of project, efficiency of project, utilization of resources and operating capability were established in planning step, and most important PEI was established the necessity of project. And in enforcement step, performance result, monitering, capability, achievement and maintenance were established, and most important PEI was established performance results. Finally, monitering, capability, achievement and maintenance were established in completion step.

The Product Information in Online Jeans Shopping by Consumers' Evaluation Criteria

  • Choi, Eun-Ha;Chun, Jong-Suk
    • The International Journal of Costume Culture
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    • v.13 no.1
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    • pp.42-50
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    • 2010
  • The purpose of this study was to find differences in evaluation criteria and product information based on jeans products consumers. The participants of this study were women age of 19 to 30 years. This study was implemented by descriptive survey method using questionnaires. A total 182 questionnaires were analyzed in this study. The subjects were grouped by the evaluation criteria of purchasing jeans through an online shopping. Finding of the study showed that, Group 1 was high involvement group. They conscious of both style feature and practicability of jeans when they bought jeans. Group 2 was low involvement group. They are not conscious of those features. The important factors were different by groups. The most important factors of purchasing jeans for Group 1 were fashion trend and practicality. Price was the most important factor for Group 2. They bought jeans at extremely low or high price. On the other hand, Group 1 bought jeans of diverse prices range. The popular shopping sites were different between two groups. The department store was the most important place purchasing jeans for both groups. The second important place was specialty stores for Group 1, and online shopping for Group 2. The usefulness of product informations were also examined when they evaluated the jeans at online shopping. The most useful product informations were leg cut style and rise length. Fit information was very important for Group 1. Group 1 considered that the function of zoomming the picture image was important. The material characteristic and name of brand were also useful than Group 2. But the size and care instruction were not highly useful.

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A Study on Improvement Evaluation of Reliability of Ex-post (사후평가의 평가체계 개선방안에 관한 연구)

  • Jo, Chang-Hee;Kim, Si-Gon;Ahn, Chan-Gi
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2182-2191
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    • 2011
  • Postmortem evaluation through the dictionary and the lack of points for the wrong strategy to respond to the avoid the prediction is important. However, the prevailing system of ex post facto assessment of postmortem simply does not have statistical figures to be provided only for the conditions. Thus, in this study, rail business is mainly evaluation procedures and evaluation of the verification system of ex post facto evaluation as to the issue, do not improve.

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A selection model of evaluation target input of software quality (소프트웨어 품질평가의 투입요소 선정모형)

  • 이종무;정호원
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1996.10a
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    • pp.166-169
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    • 1996
  • Well-evaluated quality of software can provide business proper decisions, increase productivity, and prevent financial loss or unnecessary burden of rework. Evaluation is important to ensure the chosen software conforming to organizational requirements, customer demands, and product integrity level. In this paper, we present a theoretical model with the structure of evaluation requirements to select the prioritized evaluation target input of software quality. Within limited time and budget, the prioritized target inputs of evaluation can be used to determine the appropriate evaluating step for each different category of requirements.

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