• Title, Summary, Keyword: Subsidiary criteria

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Study on the Evaluation Method of Electrical Isolation Property for Hydrogen Fuel Cell Vehicle (수소연료전지자동차의 절연성능 평가방법에 관한 고찰)

  • Lee, Ki-Yeon;Kim, Dong-Ook;Kim, Hyang-Kon
    • Transactions of the Korean hydrogen and new energy society
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    • v.22 no.6
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    • pp.810-818
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    • 2011
  • This paper analyzed the suitability about the isolation performance criteria which was based on human impedance and effect of current in IEC 60479-1 on the safety of human being was examined. The method of evaluation by megger and DC voltmeter was analyzed. The differences of isolation performance according to design of high-voltage system were analyzed. The factors which affect the insulation performance were analyzed for HFCV, EV, HEV, etc. through analysis of the isolation performance evaluation method. Finally, design for improved isolation performance was proposed.

Consistency issues in quantitative safety goals of nuclear power plants in Korea

  • Kim, Ji Suk;Kim, Man Cheol
    • Nuclear Engineering and Technology
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    • v.51 no.7
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    • pp.1758-1764
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    • 2019
  • As the safety level of nuclear power plants (NPPs) relates to the safety of individuals, society, and the environment, it is important to establish NPP safety goals. In Korea, two quantitative health objectives and one large release frequency (LRF) criterion were formally set as quantitative safety goals for NPPs by the Nuclear Safety and Security Commission in 2016. The risks of prompt and cancer fatalities from NPPs should be less than 0.1% of the overall risk, and the frequency of nuclear accidents releasing more than 100 TBq of Cs-137 should not exceed 1E-06 per reactor year. This paper reviews the hierarchical structure of safety goals in Korea, its relationship with those of other countries, and the relationships among safety goals and subsidiary criteria like core damage frequency and large early release frequency. By analyzing the effect of the release of 100 TBq of Cs-137 via consequence analysis codes in eight different accident scenarios, it was shown that meeting the LRF criterion results in negligible prompt fatalities in the surrounding area. Hence, the LRF criterion dominates the safety goals for Korean NPPs. Safety goals must be consistent with national policy, international standards, and the goals of other counties.

A Study on the Effects of Store Choice Criteria of Mass Merchandisers on Store Loyalty with Customer Emotions as Moderating Variables (대형마트 점포선택기준이 점포애호도에 미치는 영향)

  • Oh, Young-Ho;Jung, Yong-Tae
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.6 no.3
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    • pp.147-175
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    • 2011
  • The purpose of this study is to examine the effects of store choice criteria on customer satisfaction and store loyalty, and the moderating effects of customer emotions on the causal relationship between store choice criteria and customer satisfaction. In this regard, this study tries to identify the effects of store choice criteria on customer satisfaction and store loyalty in case of mass merchandisers, and to analyze the moderating effects of customer emotions on the causal relationship between store choice criteria and customer satisfaction. For this purpose, 300 customers, who have ever shopped at mass merchandisers, were surveyed and 246 valid responses were finally used for the data analysis. The results of this study are as follows. First, out of six store choice criteria, product factors, store reputation and physical environment turn out to have statistically significant effects on customer satisfaction. This result confirms those of the previous studies. On the other hand, store accessibility, subsidiary facilities and store atmosphere are not found to have statistically significant effects on customer satisfaction. This result is somewhat different from those of previous studies, and so further research on the subject needs to be carried out. Secondly, it turns out that customer satisfaction has a statistically significant effect on store loyalty, which is in line with the results of previous studies that perceived emotions affect customers' store attitudes which in turn influence their revisit intentions. Thirdly, as for the moderating effects of customer emotions on the relationship between store choice criteria and customer satisfaction, pleasure moderates the effects of store accessibility, subsidiary facilities and store atmosphere on customer satisfaction, arousal moderates the effects of product factors, subsidiary facilities and store reputation on customer satisfaction, and finally dominance moderates the effects of product factors and subsidiary facilities on customer satisfaction. These findings partially support the results of previous studies that customers' in-store emotional experiences such as feeling good or bad enhance their store loyalty.

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Consumer-based Apparel Design Elements and Evaluation Criteria -Focus on F/W Outer- (소비자에 기초한 의복디자인의 구성요소와 평가기준 -F/W 겉옷을 중심으로-)

  • Lee, Ji-Hyun;Kim, Sun-Woo
    • Journal of the Korean Society of Clothing and Textiles
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    • v.35 no.9
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    • pp.1015-1027
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    • 2011
  • This study analyzes consumer-based apparel design elements and evaluation criteria using qualitative research methodology. Apparel design is one of the most important factors to determine consumer consumption and attitude; however, limited studies have examined them. This study provides essential cues for an apparel industry suffering from dramatically fluid market situations. Based on a qualitative analysis of the focus group interviews, researchers establish three categories (basic elements, elements generated by apparel, and elements experienced by consumer) of apparel design elements that are consistent with nine elements (shape, materials, color, pattern, detail, subsidiary materials, overall image & style, fit, and overall balance). The results provide 137 types of conceptualized apparel design evaluation criteria. They developed 56 initial themes, 23 evolved themes, 23 sub categories, and 12 kinds of theme categories with abstract conceptualization. This study explicates the critical role that consumer-based apparel design is the competitive advantage within the apparel industry.

DC-Suppression Selection Criteria of Multimode Modulation Code for Optical Recording (광 기록 시스템을 위한 멀티모드 변조 코드의 DC-억압 코드 선택 방법)

  • Lee, Myoung-Jin;Lee, Jun;Lee, Jae-Jin
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.3C
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    • pp.209-214
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    • 2003
  • Multi-mode coding method is a reliable DC-suppression method. There are two ways to improve the DC-suppression performance. One is improving scrambler's performance, and the other is improving selection criteria. The latter uses the MRDS(minimum running digital sum) criterion. It is easy to calculate, but its performance goes down when the length of codeword is getting longer. The MSW(mean squared weight) criterion that is known as the best so far regardless of the length of codeword has the high complexity. In this paper, we present the new selection criteria, MPRDS(minimum peak RDS) and A BSRDS(absolute RDS). Their performance are close to the MSW, implementation is simple. And also we present the SC(sign change) that has a subsidiary role with the original selection criteria and improve the capacity.

A Study on the Durability Improvement of Highway-Subsidiary Concrete Structure Exposed to Deicing Salt and Freeze-Thaw (동결융해 및 제설제에 노출된 고속도로 소구조물 콘크리트의 내구성 개선 연구)

  • Lee, Byung-Duk;Choi, Yoon-Suk;Kim, Young-Geun;Choi, Jae-Seok;Kim, Il-Sun
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.20 no.4
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    • pp.128-135
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    • 2016
  • In the current concrete structure of the highway is still the major problem most of concrete deterioration caused by the freeze-thaw and deicing salt, which is of issues that are not completely resolved. In particular, a single freezing event does not cause much harm, durability of concrete under multi-deterioration environment by repeated freeze-thaw and deicing salt is rapidly degraded and reduce its service life. In this study, the exposure environmental condition according the regional highway points were established. The damage condition and chloride content of the concrete at general and severe environmental exposure condition were also investigated. In addition, the experimental test of chloride ion permeability, scaling resistant and freeze-thaw resistance were carried out to improve the durability of the mechanical placing concrete of subsidiary structure. According to the results of this study, in observation of concrete surface condition, the concrete exposed by severe environmental condition showed broad ranges of damage with high chloride contents. Meanwhile, the water-binder(W/B) ratio and the less water content, and fly ash concrete than the specified existing mix proportion is significantly improved the durability. Also, the optimal mix proportion derived for test is satisfied the strength and air contents, water-binder ratio, and durability criteria of concrete specifications, as well as service life seems greatly improved.

An examination of architectural preference of elderly houses for effective development in Rural Area (효율적인 농촌지역 노인양로시설 개발을 위한 건축계획적 선호도 조사)

  • Min, Kyung-Seok
    • Journal of the Korean Institute of Rural Architecture
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    • v.5 no.3
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    • pp.65-74
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    • 2003
  • Though there are high needs for the development of elderly house in rural area, there is not carried out at all. So, the purpose of this study is to provide the criteria to develop the architectural mode of elderly elderly house in rural area. The facts found in this study can be summarized as follows ; The elderly house in rural area. is increasingly being located near town. This is derived from the fact that the brand-new generation of the aged has the great likelihood to participate in social activities. So, Paid Elderly Home needs to be developed in town or suburbs. Medical facilities are indispensable in elderly house in rural area. So it is necessary that elderly house in rural area is closely connected with hospital and medical treatments. Inmates want small-sized rooms, thus one room shaped home should be built for these demands. And the flexibility of the spaces which can make two units into one should be applied to the plan and the design of the elderly house in rural area. The Home's medical facilities should be planned by considering the relationship with the Hospital. Factors for architectural planning of elderly house in rural area is movement pattern, safety facilities, and preferred subsidiary facilities through considering the physical and psychological characteristics.

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A Experiment Study for Welding Optimization of fillet Welded Structure (필릿 용접 구조물의 용접 최적화률 위한 실험적 연구)

  • Kim, Il-Soo;Na, Hyun-Ho;Kim, Ji-Sun;Lee, Ji-Hye
    • Journal of the Korean Society for Precision Engineering
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    • v.28 no.9
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    • pp.1054-1061
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    • 2011
  • GMA welding process is a production process to improve productivity for the provision of higher quality of material, These includs numerous process variables that could affect welding quality, productivity and cost savings. Recently, the welding part of construction equipment had frequent failure of major components in the welding part of each subsidiary material due to shock which is very poor according to the welding part. Therefore, the implementation of sound welding procedure is the most decisive factor for the reliability of construction machinery. The data generated through experimens conducted in this study has validated its effectiveness for the optimization of bead geometry and process variables is presented. The criteria to control the process parameters, to achieve a healthy bead geometry. This study has developed mathematical models and algorithms to predict or control the bead geometry in GMA fillet welding process.

On the Improvement for Design Methods of Luminaire Supports Based on the Structural Safety (구조안전성 기반의 가로등주 설계개선방안)

  • Jung, Soo Hyung;Shim, Jae Soo;Choi, Hyun Gyu
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.16 no.6
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    • pp.45-55
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    • 2012
  • The road luminaires have been treated as subsidiary electric apparatuses in the road although they are indispensable facilities which people use the road safely. Because of this misunderstanding, there are not many researches on luminaire supports against the wind loads. Therefore, a typhoon has overturned or damaged many luminaire supports without having sufficient structural safeties. The purpose of this study is to review the current design criteria and to suggest the improvement of design methods based on the structural safety and compatible with the site conditions of luminaire supports. The stress concentration around the inspection hole, which causes the collapse of luminaire supports, is analyzed and stress reduction method is suggested with the improved design methods.

Policy Reform of Special Education Technology to Expand the Learning Opportunities of the Disabilities (장애학생의 학습기회 확대를 위한 특수교육정보화 정책 개선 방안)

  • Lee, Kyung-Soon
    • The Journal of Korean Association of Computer Education
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    • v.10 no.1
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    • pp.55-66
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    • 2007
  • To improve access to the learning opportunities of students with disabilities, this study is to identify the potential of the information communication technology in education for the disabilities and to suggest the policy reforms for the special education technology. To answer it, the related literatures of other developed countries and Korea were collected and analyzed by desirability and feasibility as criteria. From the view of the desirability, this study found that the policies of special education in Korea were still regarded as subsidiary and separated from the general students. Moreover, from the view of the feasibility, the law and financial support was relatively insufficient than other countries to implement the policy more effectively and stably. To solve these problems, this study suggests the policy reforms in Korea as five areas and seven tasks.

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