• Title/Summary/Keyword: alternative design

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Water Balance Evaluation of Final Closure Cover for Near- surface Radioactive Wastes Disposal Facility

  • Keunmoo Chang;Park, Joo-Wan;Yoon, Jeong-Hyoun;Park, Heui-Joo;Kim, Chang-Lak
    • Nuclear Engineering and Technology
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    • v.32 no.3
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    • pp.274-282
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    • 2000
  • The simulation of water balance was conducted for suggested four alternative multi-layer cover design of near-surface radioactive waste disposal facility under domestic climate condition. The analysis was also conducted for the most favorable one out of four alternative cover design under conservative scenarios. Until 100 years after closure of disposal vault, the infiltration flux for the most favorable cover design was negligible even under doubling of the ambient precipitation condition. When the degradation of asphalt and geomembrane after 100 years of closure was considered, the infiltration flux significantly increased almost to the design criteria of cover system in I' Aube disposal facility. And it was found that the hydraulic conductivity of bentonite/sand as a bottom barrier should be no greater than 1$\times$10$^{-7}$ cm/sec recommended by U.S. EPA.

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On a Compartment Layout Computer Model and Associated Data Structure (선박 구획배치 전산모델과 그 자료구조에 관한 연구)

  • Yong-Chul,Kim;Kyu-Yeul,Lee
    • Bulletin of the Society of Naval Architects of Korea
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    • v.27 no.3
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    • pp.117-126
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    • 1990
  • In the early stage of ship design process large number of alternative compartment layout designs are generated and examined iteratively. Therefore, the design efficiency will be considerably enhanced if a tool is available to perform this kind of iterative design process effectively in a relatively short time. This paper describes a method for generating and evaluating various alternative compartment layout designs in a personal computer. In this method, computer model of a compartment layout is generated by establishing the hierarchical structure of the entities forming a compartment and defining clearly the relationships among the entities. The evaluation of the design alternatives are effectively performed utilizing the computer model generated. The data structure for storing the defined compartment layout is explained and an illustrative example is given showing the application of the method to the design and evaluation of compartment layout of an Oceanographic Research Vessel.

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Effective Application of Design Space Exploration in the Very Early Naval Ship Design (초기단계 함정설계시 설계영역탐색의 효과적 적용)

  • Park, Jinwon;Park, Sangil
    • Journal of the Korean Society of Systems Engineering
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    • v.11 no.2
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    • pp.61-73
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    • 2015
  • The early-phase naval ship design demands requirements synthesis rather than design synthesis, which conducts engineering design for several domains on a detailed level. Requirements synthesis focuses on creating a balanced set of required operational capabilities satisfying user's needs and concept of operations. Requirements are evolved from capability based languages to function based language by statistical exploration and engineering design which are derived in the following order: concept alternative, concept baseline, initial baseline and functional baseline. The early-phase naval ship design process can be divided into three passes: concept definition, concept exploration and concept development. Main activities and outcomes in each pass are shortly presented. Concept definition is the first important step that produces a concept baseline through extensive design space exploration promptly. Design space exploration applies a statistical approach to explore design trends of existing ships and produce feasible design range corresponding to concept alternative. It further helps naval systems engineers and operational researchers by inducing useful responses to user and stakeholders' questions at a sufficient degree of confidence and success in the very early ship design. The focus of this paper is on the flow of design space exploration, and its application to a high-speed patrol craft. The views expressed in this paper are those of the authors, and do not reflect the official policy or rule of the Navy.

An Analysis on the Expressive Characteristic and the Formativeness of Grunge Hair-Design Appearing in Modern Fashion -Focused on 2014~2016 Trend Collections- (현대 패션에 나타난 그런지 헤어 디자인의 표현 특성 및 조형성 분석 -2014~2016년 트렌드 컬렉션을 중심으로-)

  • Kim, Kyoungin
    • Journal of Fashion Business
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    • v.20 no.5
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    • pp.87-101
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    • 2016
  • In this study, a variety of influence in the field of design and analysis about the value of a Grunge Design and the creative design inspirations in the field of hair design to help the development of the quality of research. The research methods use the Internet publications such as local and foreign information, analysis and related research and book form, such as the network search, library goes for consideration by a literature search. The contents of this study used review of the case and by Grunge design, expressive characteristics by color, texture and form of Grunge hair design, from 2014 to 2016 trend collections in the last three years through the analysis of design by date of the case. The result of this study is, Grunge design appearing in the areas of hair design, that are grunge anti fashion like the beauty of the disorder, the disharmony, the incomplete, the kitsch, the poverty. Although Grunge means dirt, filth, rubbish as a slang but it is valuable which was raised from the anti fashion to high fashion and alternative of main stream fashion and the hair design in modern fashion also brought. In this study, we can understand the grunge hair design in modern fashion was started from lower place as alternative and forecast the potentialities, the formativeness of the grunge design and value of the beauty and grunge anti fashion the identity and the spirit appearing steadily a modern fashion influence are reflected in our next fashion and design characteristics.

The Moderating Effect of Perceived Alternative Job Opportunities between Organizational Justice and Job Satisfaction: Evidence from Developing Countries

  • Mushtaq, Arslan;Amjad, Muhammad Shajeel;Bilal, Bilal;Saeed, Muhammad Mohtsham
    • Asian Journal of Business Environment
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    • v.4 no.1
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    • pp.5-13
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    • 2014
  • Purpose - This study examines the relationship between organizational justice and employee job satisfaction and the extent of its moderation by perceived alternative job opportunities. Research design, data, and methodology - This is a cross-sectional study utilizing survey questionnaire data from 220 bank employees, which included scales measuring organizational justice, job satisfaction, and perceived alternative job opportunities. Results - The data is analyzed using correlation and hierarchical regression. Results demonstrated that organizational justice has a direct positive impact on employee job satisfaction further, distributive justice explains more variance in job satisfaction, followed by procedural justice and interactive justice. Perceived alternative job opportunities moderate the relationship between organizational justice and job satisfaction. Conclusions - Generally, organizational justice increases bank employees' job satisfaction; however, when they perceived more job opportunities, their job dissatisfaction increased notwithstanding fairness. Therefore, perceived job opportunities moderate the relationship between organizational justice and job satisfaction. Retaining skilled employees has become difficult, especially when there is market demand for skilled workers. Human resource (HR) managers should consider market situations before formulating policies; otherwise, they may lose the competitive advantage of skilled employees and workers.

Hexagonal Material Flow Pattern for Next Generation Semiconductor Fabrication (차세대 반도체 펩을 위한 육각형 물류 구조의 설계)

  • Chung, Jae-Woo;Suh, Jung-Dae
    • Journal of Korean Institute of Industrial Engineers
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    • v.36 no.1
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    • pp.42-51
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    • 2010
  • The semiconductor industry is highly capital and technology intensive. Technology advancement on circuit design and process improvement requires chip makers continuously to invest a new fabrication facility that costs more than 3 billion US dollars. Especially major semiconductor companies recently started to discuss 450mm fabrication substituting existing 300mm fabrication of which facilities were initiated to build in 1998. If the plan is consolidated, the yield of 450mm facility would be more than doubled compared to existing 300mm facility. In steps of this important investment, facility layout has been acknowledged as one of the most important factors to be competitive in the market. This research proposes a new concept of semiconductor facility layout using hexagonal floor plan and its compatible material flow pattern. The main objective of this proposal is to improve the productivity of the unified layout that has been popularly used to build existing facilities. In this research, practical characteristics of the semiconductor fabrication are taken into account to develop a new layout alternative based on the analysis of Chung and Tanchoco (2009). The performance of the proposed layout alternative is analyzed using computer simulation and the results show that the new layout alternative outperforms the existing layout alternative, unified layout. However, a few questions on space efficiency to the new alternative were raised in communication with industry practitioners. These questions are left for a future study.

Strengthening Partnerships in Fair Trade Alternative Distribution Channels: A Case Study of Beautiful Coffee

  • Kim, Soeun;Kim, Alex Jiyoung
    • Journal of Distribution Science
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    • v.14 no.12
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    • pp.43-51
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    • 2016
  • Purpose - The purpose of this paper is to discuss success factors behind ATO distribution channels by examining successful partnerships between producers and alternative trading organizations (ATOs). Research design, data, and methodology - This is a case study, an analytical approach, which illustrates how the partnership between producers and ATOs has strengthened the fair trade and the performance of participants in the trade based on the example of the trading relationship between Beautiful Coffee, an alternative trading organization dealing coffee related products, and the coffee cooperative union (CCU), a coffee producing cooperative in Gulmi, Nepal. Results - Beautiful Coffee in the partnership with HELVETAS empowered small coffee farmers by a successful institutionalization of CCU that consolidated the distribution channel to be more efficient. Also, Beautiful Coffee and its partnership with KOICA have tried to increase productivity and quality of coffee beans. Conclusions - The case of Beautiful Coffee demonstrates that the partnership between producers and alternative trading organizations (ATOs) has benefited the fair trade partners. In other words, Beautiful Coffee's partnerships with a NGO working in the local producing area, HELVETAS, and a government aid agency, KOICA could strengthen the relationship between the producers and the ATO, and thus contributes to the whole distribution channel.

Effects of Relationship Value, Alternative Attractiveness, and Investment Size on Franchisee Commitment

  • Yang, Jeong-Seok;Lee, Sang-Youn;Han, Kyu-Chul
    • Journal of Distribution Science
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    • v.13 no.8
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    • pp.41-48
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    • 2015
  • Purpose - This study's objective is to confirm the effects of the perceived relationship value, alternative attractiveness, and investment size on Korean food service franchisees' commitment, using an investment model. Among the three factors, the study examines which factors enhance or weaken the commitment in the franchising investment model. Research design, data, methodology - The data were collected from 495 franchisees and analyzed by a SEM (Structure Equation Model) using path analysis by SPSS 18.0 and AMOS 18.0. Results - 1) The perceived relationship value has a positive effect on franchisee commitment. 2) The alternative attractiveness has a negative effect on franchisee commitment. 3) The investment size has a positive effect on franchisee commitment. Conclusions - The findings show that the investment model can be adapted to franchising and confirms previous investment model study results. We can assume that the higher the perceived relationship value and the bigger the investment, the stronger the commitment, and the greater the alternative attractiveness, the weaker the commitment. These results offer managerial implications for a franchisor wanting to strengthen franchisee commitment.

The effect of purposeful computer activity using alternative input devices on the performance and satisfaction of patients with cerebral palsy (대체입력기기를 이용한 목적 있는 컴퓨터 작업 활동이 뇌성마비 환자의 수행도 만족도에 미치는 영향)

  • Lee, DongGeon
    • Journal of Korean Physical Therapy Science
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    • v.27 no.2
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    • pp.80-87
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    • 2020
  • Background: The purpose of this study was to investigate the effect of the use of an alternative input device on the patient's work performance and satisfaction in patients with cerebral palsy who cannot use computers. Design: Case Series Description. Methods: The participant was one adult cerebral palsy. The three tasks were applied with an alternative input device (Quick-Glance), 1 session an hour, 3 times a week, a total of 12 times for 4 weeks. The assessment was using the Canadian Occupational Performance Measure (COPM). The evaluation was performed pre-test before the intervention, post-test after the last intervention, and follow-up after one month. Results: The COPM(Satisfaction and performance scores) showed 3 points for pre-test, 7 points for post-test, and 7 points for follow-up. Conclusion: Purposeful computer work activity, which is an alternative input device, has a positive effect on work performance and satisfaction of cerebral palsy patients who are difficult to use computer.

A Study on Leakage Characteristics of a Scroll Compressor with alternative Refrigerants of R22 (R22 대체냉매를 적용한 스크롤 압축기의 누설 특성에 관한 연구)

  • Youn, Young;Kim, Yong-Chan;Min, Man-Ki
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.13 no.5
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    • pp.377-387
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    • 2001
  • This paper presents leakage characteristics of a scroll compressor applying alternative refrigerants of R22 such as R407c and R410a under actual operating conditions. Because leakage in a scroll compressor produce significant losses and degradation of performance, those should be clarified to design a high efficient scroll compressor with alternative refrigerants of R22. However, flank and tip leakage characteristics of a scroll compressor with alternative refrigerants are very limited in open literature. In the present study, both experimentation and modeling of the leakages in the scroll compressor were performed. As a result, it was observed that the leakages of the scroll compressor with R407c increased by 15%, and that with R410a increased by 76% as compared to the compressor applying R22 under standard load conditions due to a higher upstream pressure and a higher pressure difference between pockets.

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