• Title/Summary/Keyword: specifications

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A Study for the Development of Writing National Standard Specifications, Owner′s Standard Specifications and Project Specifications (표준$\cdot$전문$\cdot$공사시방서의 작성방법 개선방안에 관한 연구)

  • Koo Jai Dong;Kim Tae Song
    • Korean Journal of Construction Engineering and Management
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    • v.1 no.3 s.3
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    • pp.81-88
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    • 2000
  • Recently the Government has classified the construction specifications into three types such as national standard specifications, owner's standard specifications and project specifications, by the revision of the Law of Construction Technology Management. And the Government provided that project owner shall use the project specifications that are written by excerption from, revision of, and supplement to the national standard specifications or the owner's standard specitications etc.. The present study suggests the writing way of national standard specifications, owner's standard specifications and project specifications in these situations.

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(A Study on Improvement for Defense Specifications/Standards System) (국방 표준/규격 체계 개선방안 연구)

  • Park, Jae-Yong;Choi, Seok-Cheol
    • Journal of the military operations research society of Korea
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    • v.35 no.1
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    • pp.105-121
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    • 2009
  • Recently, the level of science and technology in our country has reached the level of the advanced countries. However, the level of standards/specifications was insufficient for support. In this study, after a review of the international atmosphere on defense specifications/standards and an investigation of the domestic present situation, three different perspectives of improvement scheme for the defense specifications/standard system are presented. First, in the defense standard classification system perspective, specifications, standards and handbook were defined based on their characteristic and properties. Second, in the perspective concerning the establishment procedure of defense standards/specifications, the bottom-up approach was suggested. Finally, in the perspective of the 'defense standards/specifications instructions', a reinforced drawing number system and other factors to overcome the current limitations are provided.

A Study on the Revision Efficiency of Referenced Specifications/Standards for Raw and Subsidiary Materials in the Field of National Defense (국방분야 인용 원·부자재 규격/표준 개정 효율화 연구)

  • Park, KC;Baek, HM;Kim, TW;Gil, HJ;Kwon, JS;Lee, IL;Song, SB;Won, SH
    • Journal of Korean Society for Quality Management
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    • v.46 no.3
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    • pp.497-508
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    • 2018
  • Purpose: The purpose of this study is to research the revision efficiency of the referenced specifications/standards for raw and subsidiary materials in the field of national defense. Methods: Firstly, it was carried out to investigate the all of the Korean military drawings and establish the database for specifications/standards referenced in the field of national defense. Secondly, it was reviewed the validity of referenced specifications/standards of raw and subsidiary materials. Finally, proposal documents were made for invalid referenced specifications/standards of raw and subsidiary materials in order to suggest alternative specifications/standards. Results: All of the specifications/standards referenced in the Korean military drawings were 11,924 kinds and raw and subsidiary specifications/standards were 2,711 kinds. The proposal documents for revision of invalid referenced specifications/standards were suggested and approved by the military procurement standardization committee of DAPA (Defense Acquisition Program Administration). Therefore, the revision process of 472 kinds of referenced specifications/standards and 160,177 papers of the Korean military drawings were finished. Conclusion: Based on the results of this investigation, it could be significantly reduce to administrative costs and efforts through revision of referenced specifications/standards instead of conventional engineering change.

A Study on Decision-making Methods for Improving Technical Specifications (위험도 정보를 이용한 Technical Specifications 개선을 위한 정량적 의사 결정 방법론 연구)

  • 김범석;제무성
    • Journal of the Korean Society of Safety
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    • v.18 no.2
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    • pp.86-91
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    • 2003
  • The utility and the nuclear research institutes in korea have conducted research for improving inefficient requirements in technical specifications using the results of probability risk assessments and informations with risk. However, the guidance for reviewing the improved technical specifications has not been developed. The objective of this study is to develop a decision-making framework for investigating and reviewing the technical documents associated with the to changes of technical specification This study has developed a decision-making framework for reviewing the improvements of the RI-TS(Risk-Informed Technical Specifications). This work may contribute to enhancing both the safety and the efficiency of nuclear power plants by changing Technical Specifications proposed by the utility.

Geometrical Product Specifications for Coordinate Measuring Machines (CMM의 기하학적 제품규격)

  • Choi, Sung-Woon
    • Proceedings of the Safety Management and Science Conference
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    • 2007.11a
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    • pp.319-322
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    • 2007
  • This paper presents geometrical product specifications of acceptance and verification tests for coordinate measuring machines(CMM). These specifications include vocabulary, measuring size, rotary table with fourth axis, scanning measuring mode, multiple-stylus probing systems, measuring, and, estimation of errors in computing Gaussian associated features.

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A Study on Development of Chinese Men's Apparel Sizing System (중국(中國) 성인남성용(成人男性用) 의류치수규격(衣類値數規格) 설정연구(設定硏究) I)

  • Sohn, Hee-Soon;Lim, Soon;Kim, Jee-Yeon
    • Journal of Fashion Business
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    • v.8 no.1
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    • pp.1-15
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    • 2004
  • The purpose of this study is to provide for some basic data useful to production of the apparels fit and measured well for the Chinese men. For this purpose, Chinese men's apparel measurements and specifications were determined per area group(Beijing/ Shanghai) according to the Men's Wear Specifications (GB/T 1335.1-1997), National Standards of People's Republic of China. The collected data were statistically processed using SAS 6.12 for technical statistical analysis, correlation analysis, factor analysis, group-wise analysis and ANOVA. The results of this study can be summarized as follows; 1. As a result of dividing the Chinese men into Beijing and Shanghai men and thereby, setting height and upper chest circumference for upper garments and height and waist for lower garments. 2. Analyzing the correlations according to the three-fold classifications of height/upper chest circumference/waist for garment specifications, 17 specifications based on heights and upper chest circumferences for Beijing men's upper garments could be designed within the deviation level of 2%, while 15 specifications based on waist measurements could be designed (between $70{\sim}98cm$) for their lower garments within the deviation level of 4%. Thus, a total of 60 combinations of the specifications could be obtained. 3. 16 specifications based on heights and upper chest circumferences for Shanghai men's upper garments could be designed within the deviation level of 2%, while 16 specifications based on waist measurements could be designed (between $68{\sim}98cm$) for their lower garments within the deviation level of 3%. Thus, a total of 56 combinations of the specifications could be obtained. For other reference measurements, grading measures were set for each type and body part, while the average measures of major body parts were calculated.

Development of a Process Capability Index in Caseof Multi Specifications & Unfixable Objects (측정 대상이 여러 규격을 포함하며 고정되지 않는 경우의 공정능력 측정지수 개발)

  • Lee, Do-Kyung;Choi, Moon-Serk
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.28 no.4
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    • pp.48-54
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    • 2005
  • Recently, a couple of process capability indices are used to evaluate that the outputs of the process satisfy the specifications. An assumption of those indices is that the specifications of the characteristics are given single constant value. The display panel is a highly precise product and all the specifications of measure points are designed by their locations in the panel. So it is very difficult to locate the measurement facility to the exact position. In this paper, we propose a new process capability index in case of multi specifications and unfixable objects.

A STUDY ON THE CLASSIFICATION OF OWNER'S STANDARD SPECIFICATIONS

  • Jai-Dong Koo;Tae-Song Kim
    • International conference on construction engineering and project management
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    • 2005.10a
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    • pp.1158-1164
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    • 2005
  • This study suggests how to classify owner's standard specifications in organizations such as local governments which place an order for constructing general and various types of facilities. And the principal conclusions of this study can be summarized as follows; first, the Standard Specifications for Seoul Metropolitan Government of for all facilities could be integrated by seven individual works. Second, it is advisable from a viewpoint of long term to draw up integrally owner's standard specifications by trade for facilities, rather than draw up by group of facilities. Third, editing integrated standard specifications for all trades to meet the unified work classification structure should be backed up by high technology, therefore owner's standard specifications by trades would be favorable to our situation.

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The optimum specifications and design of distributive transformers (배전용 변압기의 합리적인 사양과 그 설계법)

  • 이승원
    • 전기의세계
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    • v.14 no.4
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    • pp.8-17
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    • 1965
  • Firstly, this study has analyzed the following factors affecting the optimum specifications and design of distributive transformers: 1. Facilities installation cost per unit power output. 2. Facilities operating & maintenance cost per unit power output. 3. Production cost per unit power output. 4. Load factor. 5. Loss factor. Secondly, it has clarified the relations between the following factors and the specifications and design of distributive transformers; 1. No-load loss., 2. Load loss., 3. Voltage regulation., 4. Exciting current. Finally, it has determined the method of the most economic design for the transformers using the above factors and relations, and, for optimum the illustrative purpose, suggested their optimum specifications, way of evaluation, and merits by means of typical example.

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Computational analysis of the effect of SOI vertical slot optical waveguide specifications on integrated-optic biochemical waveguide wensitivity

  • Jung, Hongsik
    • Journal of Sensor Science and Technology
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    • v.30 no.6
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    • pp.395-407
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    • 2021
  • The effect of the specifications of a silicon-on-insulator vertical slot optical waveguide on the sensitivity of homogeneous and surface sensing configurations for TE and TM polarization, respectively, was systematically analyzed using numerical software. The specifications were optimized based on the confinement factor and transmission power of the TE-guided mode distributed in the slot. The waveguide sensitivities of homogeneous and surface sensing were calculated according to the specifications of the optimized slot optical waveguide.