• Title/Summary/Keyword: Cons

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A Review of Robust Design Methodologies (강건설계기법의 연구동향)

  • Park, Gyung-Jin;Lee, Tae-Hee;Lee, Kwon-Hee;Hwang, Kwang-Hyeon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.28 no.9
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    • pp.1368-1383
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    • 2004
  • Robust design has been developed with the expectation that an insensitive design can be realized. That is, a product designed by robust design should be insensitive to external noises or tolerances. Robust design can be classified into three methods: (1) The Taguchi method (2) robust optimization (3) robust design by the axiomatic approach. In this paper, each method is reviewed and investigated. Pros and cons fur each method are discussed and a future direction for development is proposed.

Controversies on the Usefulness of Nerve Conduction Study in the Early Diagnosis of Diabetic Polyneuropathy: Cons (당뇨병성 다발신경병증의 조기 진단에 있어서 신경전도검사의 유용성에 관한 논란: 부정적인 관점에서)

  • Sohn, Eun Hee
    • Annals of Clinical Neurophysiology
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    • v.10 no.1
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    • pp.33-37
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    • 2008
  • Diabetic polyneuropathy (DPN) is the most common form of diabetic neuropathy, and causes a significant morbidity with an impact on the quality of life in the patients with diabetes. Since DPN frequently induces foot deformity and ulceration, which finally leads to foot amputation, the early detection and treatment is very important for the prevention of a permanent structural change. In the early stage of DPN, the diagnostic methods which can evaluate the function or structure of small nerve fibers should be employed because small nerve fibers are first involved in the course of DPN. However, the nerve conduction study cannot reflect the function of the small nerve fibers, and thus, has a definite limitation in the early diagnosis of DPN. For the early detection of DPN, electrodiagnostic data should be interpreted on a clinical context, along with the careful evaluation of the small nerve fiber functions using the tests such as the analysis of intraepidermal nerve fiber density.

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차세대 원전 주제어실 설게 기본개념의 인지공학적 평가

  • 정경훈;윤완철;함동한
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1996.04a
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    • pp.403-406
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    • 1996
  • Since most human activities in a nuclear power plant are perfirmed in the main control room (MCR), it is important to have its design well human-engineered, both physically and cognitively. Much research efforts have been given for better, operator-centered designs of human-machine interface in MCR capitalizing today's advanced information technology. Korea is among those who are actively expending such research for the next-generation nuclear plants. This paper analyzes two forerunners among the emerging MCR designs, namely Nuplex 80+ and N4, from the perspective of cognitive systems engineering. Since the two show some fundamental differences in their design concepts, the principles with their pros and cons must be enumerated to benefit our own design of new control rooms. This paper also lists many other decision-making points that emerged due to the new availability of cognitively based on cognitive engineering principles. The future scope and directions of related research are suggested.

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Pollutant Flux Releases During Summer Monsoon Period based on Hydrological Modeling in Two Forested Watersheds, Soyang Lake

  • Kang, S.H.
    • Environmental Engineering Research
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    • v.14 no.1
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    • pp.13-18
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    • 2009
  • In this study, specific pollutant releases during the Asian monsoon season were estimated and the information was applied to the non-point pollutant sources management from two forested watersheds of the Soyang Lake. The two watersheds are part of the 2,703 km2 Soyang Lake watershed in the northern region of the Han River. The outlets of the two watersheds were respectively analyzed for continuous water quality concentration and for discharge during various single rainfall events. Statistical power function methods are utilized to compare stream discharge and pollutant flux release during the study period. Based on the monitoring data during the study period, the specific load flux method using simulated discharge was conducted and validated in the two watersheds. The model predictions corresponded well with the measured and calculated pollutant releases. The modeling approach taken in this study was found to be applicable for the two forested watersheds.

Review and Analysis of Recommender Systems (추천 시스템 기법 연구동향 분석)

  • Son, Jieun;Kim, Seoung Bum;Kim, Hyunjoong;Cho, Sungzoon
    • Journal of Korean Institute of Industrial Engineers
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    • v.41 no.2
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    • pp.185-208
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    • 2015
  • The explosive growth of the world-wide-web and the emergence of e-commerce has led to the development of recommender systems. Recommender systems are personalized information filtering used to identify a set of items that will be of interest to a certain user. This paper reviews recommender systems and presents their pros and cons.

Pull-Push Manufacturing Strategy in assembly process (조립공정에서의 Pull-Push 제조전략)

  • 이철식;송장근
    • Korean Management Science Review
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    • v.10 no.2
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    • pp.121-143
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    • 1993
  • Traditional Manufacturing method is push system by plan made in advance and Japanese manufacturing method represented by JUST-IN-TIME is pull system which respond's to the demand flexibly. Both have their pros and cons. In general, it is well understood that push system is faster than pull system in the sense of manufacturing speed. However, pull system such as JIT excelles dramatically in the sense of work in process. Therefore, this paper is trying to put together to get alternative which has the advantage of both system. The objective of the paper is to enhance the effect of built-in manufacturing system without paying extra cost by way of introducing the alternative of the pull-push manufacturing strategic operational method.

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A study on pricing for information services (정보서어비스의 가격설정)

  • 권은경
    • Journal of Korean Library and Information Science Society
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    • v.20
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    • pp.383-411
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    • 1993
  • Information and information services are recently recognized as a commodity and libraries and information centers are also considered as a company. Under this circumstance, libraries and information centers encounter the problems how they can effectively achieve the objectives of service institutions and objectives of resource management as companies. Pricing policy for information services must be something to satisfy these two very different objectives. This paper discusses the following issues to develop pricing model for information services, 1) the needs of pricing for information services, 2) the major elements impacting to pricing of information services including the objectives of pricing, cost and demand of information services, and information value, 3) the pros and cons of pricing method using concepts of average cost, price differentiation, and marginal cost, respectively.

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A Question on Theoretical Justification of Cataloging Outsourcing (편목업무 아웃소싱의 이론적 근거에 대한 의문)

  • Rho Jee-Hyun
    • Journal of Korean Library and Information Science Society
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    • v.37 no.2
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    • pp.231-253
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    • 2006
  • This study intends to make a comprehensive inquiry about the theoretical foundations of cataloging outsourcing. To the end, this study examined (1) backgrounds of cataloging outsourcing, 2) the pros and cons of cataloging outsourcing, (3) theoretical justification suggested by guardians of cataloging outsourcing, and (4) methodological limitations found in literatures on the subject. On the basis of it, finally suggested are methodologies for evaluating 'effectiveness' of cataloging outsourcing.

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A Research on the 'Contracting Out' of Public Library Services in Korea (공공도서관 위탁경영의 현상과 과제에 관한 고찰)

  • Kwack, Dong-Chul
    • Journal of Korean Library and Information Science Society
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    • v.38 no.3
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    • pp.383-404
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    • 2007
  • The purpose of this research is to analyze the trend and performances of contracting out the management of public libraries in Korea, in order to help promote the effectiveness and efficiencies of their operations. In this research, Investigated in detail are the following issues: First, the need for and background of contracting out public library services and their present state in Korea; Second, the pros and cons of contracting out public library services; and finally, based on the aforementioned findings, a future model of 'contracting out' public library services is proposed in order to further the effective management of public libraries in Korea.

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An Appreciation and a Prospect on the Rotterdam Rules (로테르담 규칙에 대한 평가와 전망)

  • Yang, Jung-Ho
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.51
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    • pp.359-389
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    • 2011
  • The Rotterdam Rules, which was adopted in December 2008 by UNCITRAL, has underlying intention that it will provide uniform law for the international carriage of goods by sea and modernize transport law reflecting modern transport custom. However, it is also true that there are various conflicting views on the Rotterdam Rules. This article tried to analyze main controversial issues such as scope of application, basis of liability of the shipper and the carrier, exception th the volume contract, legal position of the freight forwarder, delivery of the goods from the both sides of view. The Rotterdam Rules exposes some problems in applying and interpreting the Rules as many people indicated. These problems, I think, mainly due to the extended scope of application and broader range of issues. However, I do not think that the Rotterdam Rules will serious affect to the international transport industry. Furthermore, it is unreasonable to expect perfect Rules satisfying every interests.

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