• Title/Summary/Keyword: Procedures

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Procedures for the noise impact assesment of high-speed trains (고속철도 차량의 소음영향 평가 절차)

  • Choi Sunghoon;Lee Chan-Woo;Cho Jun-Ho;Kim Jae-Chul
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.387-392
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    • 2004
  • There has been an increasing demand for the noise impact assessment by the high-speed trains due to the expansion of high-speed rails. This paper provides procedures for the evaluation and the assessment of the potential noise impact resulting from proposed high-speed rails. Firstly the official specifications for the railway noise have been reviewed, and the procedures for the initial noise evaluation and the detailed noise analysis have been described.

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Some Recommended Procedures for Conversion of Carboxylic Acid and Its Derivatives to Aldehydes by Metal Hydride Reductions

  • Cha, Jin Soon
    • Journal of Integrative Natural Science
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    • v.5 no.2
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    • pp.84-90
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    • 2012
  • Some recommended procedures for obtaining aldehydes from carboxylic acid itself and its derivatives, which have been developed in relatively recent years, are summarized. Such procedures should provide a new practical methodology to synthesize the desired aldehyde products in high yields.

Implant Placement Using Various Surgical Techniques: Case Report

  • Lee, Ji-Young;Kim, Young-Kyun
    • Journal of Korean Dental Science
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    • v.3 no.2
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    • pp.50-59
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    • 2010
  • Implant placement is frequently complicated and challenging because of the poor quality and inadequate height of bone. Clinicians should consider various surgical procedures to overcome the problems. We report a case with various surgical procedures used such as inferior alveolar nerve repositioning, sinus bone graft, and autogenous block bone graft using the coronoid process and ramus to overcome severe vertical and horizontal alveolar bone atrophy.

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Application Guide of Reliability Test (신뢰성 시험 적용 모델)

  • Choi, Sung-Woon
    • Proceedings of the Safety Management and Science Conference
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    • 2007.04a
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    • pp.295-307
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    • 2007
  • This paper introduces statistical test principles, statistical procedures and tests for exponential distribution. This paper also shows compliance test plans for success ratio and constant failure rate, and goodness-of-fit tests for Weibull distribution. Moreover, this paper presents procedures for comparision of two constant failure rates, and dependability of products containing reused parts.

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Nonparametric Selection Procedures and Their Efficiency Comparisons

  • Sohn, Joong-K.;Shanti S.Gupta;Kim, Heon-Joo
    • Communications for Statistical Applications and Methods
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    • v.1 no.1
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    • pp.41-51
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    • 1994
  • We consider nonparametric procedures for the selection and ranking problems. Tukey's generalized lambda distribution is condidered as the distribution for the score function because the distribution can approximate many well-known contionuous distributions. Also we compare these procedures in terms of efficiency, defined by the ratio of a probability of a correct selection divided by the expected selected subset size.

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Comparison of Several Populations with a Control Involving Folded Normal Distributions

  • Lee, Seung-Ho;Lee, Kang-Sup
    • Journal of the Korean Statistical Society
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    • v.11 no.1
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    • pp.45-58
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    • 1982
  • The problem of comparing k normal populations with a control (or a standard) in terms of the absolute values of their means is considered. Under the framework of indifference-zone formulation a single-state and a two-stage procedures for selecting the best are proposed, according to their commom vairances known or unknown respectively. The procedures guarantee that the probability of correct selection is not less than some preassigned lower limit. Selected tables necessary to implement the procedures are provided.

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Flight Test Procedures for Light Airplane (경비행기의 비행 시험 절차에 관한 연구)

  • Lee, Jung-Mo;Eun, Hee-Bong
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.5 no.1
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    • pp.17-30
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    • 1997
  • FIight Test procedures are studied from FAR 23, AC 23-8, and Order 8110.7. We have been studied the main procedures for the type certification of light airplane from the experiences of Chang Gong 91. This study is intended as a reference for small airplane manufacturers, engineers, flight test engineers, and engineering flight test pilots, including government personnel. This study covers flight test items of interest during type certification. These methods and procedures are promulgated, in the interest of standardization, for use during normal category airplane flight test certification activities.

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The analysis of TSI procedure in the ERTMS/ETCS (ERTMS/ETCS의 TSI 절차에 관한 분석)

  • Lee, Sang-Hyeok;Kim, Min-Seok;Jung, Dae-Young;Ko, Young-Hwan;Lee, Jong-Woo
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.125-131
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    • 2011
  • TSI(Technical Specification for Interoperability) is the highest technical specification in the Europe Railway and is composed by assessment items and essential requirements included by safety, reliability, availability, health, environment protection and technical compatibility. It is used on the research and development in the next generation railway technical. Currently, TSI procedures have been asked to bid for high speed rail business in Europe and Brazil. Also, all the railway systems such as infrastructure, signaling, electric and rolling stock system corresponding with standard of TSI procedures are exported and imported. Recently, Safety Critical System which has been studied on future railway R&D business in Korea is the state of the art train control system. And it is needed for system assessment of TSI procedures before system test and operation. In this paper, basic research is performed for analyzing TSI procedures suitable for the state of the art train control system in Korean railway.

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Considerations on ceramic restoration's polishing method (도재 수복물의 연마 방법에 대한 고찰)

  • Shim, Ji Suk;Ryu, Jae Jun
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.24 no.2
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    • pp.78-85
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    • 2015
  • Although the finishing of ceramic restorations affects overall results of prosthetic procedures, the importance of finishing procedures has been underestimated. Finishing procedures have influence on the esthetics, and strength of ceramic restorations, and attrition of opposite tooth. For achieving the appropriate results of these factors, the overall understanding related to the finishing procedures of ceramic restoration is necessary.

ISO 3951, Sampling Procedures and Charts for Inspection by Variables for Percent Nonconforming (ISO 3951, 계량조정형 샘플링 검사규격)

  • Hong, Sung-Hoon;Lee, Seung-Hwan
    • Journal of Korean Society for Quality Management
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    • v.23 no.1
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    • pp.1-14
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    • 1995
  • ISO 3951 (1989) Sampling Procedures and Charts for Inspection by Variables for Percent Nonconforming is an acceptable quality level (AQL) type sampling scheme. Sample size code letters and inspection levels in this International Standard correspond to those given in the ISO 2859 (1989), a standard for sampling plans by attributes. Two acceptance sampling procedures can be used ; tabular and graphical methods. The graphs could be used in less critical applications while the tabular method would be available for those familiar with MIL-STD-414 tables and to confirm the results of the graphs when needed. The sampling procedures of the ISO 3951 are matched to the ISO 2859 to enable us to move between them. Composite OC and ASN curves are given for AQL 2.5% and code letter F.

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