• Title/Summary/Keyword: specifications/standards

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Use of Output Specifications in PFI Housing Projects - How They Differ from Prescriptive Specifications

  • Lam, Patrick T.I.;Chan, Albert P.C.;Akintoye, Akintola;Javed, Arshad Ali
    • Journal of Construction Engineering and Project Management
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    • v.1 no.2
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    • pp.43-48
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    • 2011
  • In many parts of the world, low cost housing used to be built and maintained by the governments, based on designs and detail specifications prepared by the public sector with construction carried out by contractors. Results vary due to differences in design standards, workmanship and property management, depending also on the neighbourhood's care of the estates and their pattern of usage. In the UK, where Private Finance Initiative (PFI) has been used for infrastructure projects, there have been successful cases of city estate being transformed by PFI. These PFI housing schemes involve new-build, refurbishment as well as facility management. Unlike traditional construction, which is based on prescriptive specifications, PFI housing is based on output specifications. A study has been undertaken to compare the two specification approaches as they are applied to housing estate. Results are enlightening and serve as good reference to cities such as Hong Kong SAR and Singapore, where public housing provisions have been a major concern of their citizens as the building stock gets older.

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.

A Study on the Improvement Plan of Construction Noise Monitoring (공사장 소음모니터링 개선방안에 관한 연구)

  • Park, Young-Min;Kim, Kyoung-Min
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.23 no.12
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    • pp.1056-1065
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    • 2013
  • Noise generated from Construction site has been raised most civil complaints to 64.4 % among the environmental pollution in 2011. Therefore, local government recommends and prescribes that construction sites over a certain scale install sound level meter for noise monitoring. For example, Seoul has implemented a 24 hour noise monitoring system, with real time communication, to the large construction sites more than 10,000 $m^2$ from the end of August 2012. But it is difficult to use noise measurement data for the construction noise assessment, since the installation standards and technical specifications for construction noise monitoring system are not presented. In this paper, we proposed noise monitoring system improvement plan including technical specifications and installation standards using the investigating results of the problems of current noise monitoring system and the foreign cases.

A Study on Reliability of Japanese Home Network Unit Development

  • Jeong, Jin-Woo;Shin, Hong-Jae;Kwack, Kae-Dal
    • Journal of Applied Reliability
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    • v.9 no.4
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    • pp.351-362
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    • 2009
  • This paper describes the issues that must be considered for the diagnosis and improvement of home network systems during the product development phase, and what must be done to resolve the reliability problem when a system is about to enter the Japanese market. It suggests that after the product specifications are determined, an accurate analysis of the environment is needed, and should include factors such as the temperature, humidity and power source of the country concerned. Furthermore, the video standards, residential complex installation environment, wiring specifications, and approval standards must be considered. All the above processes are described in this paper through the case study. The purpose of this paper is that suggested procedures in this research is to be used as a reference for developing similar products in the future.

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Study of Vibration Test Condition for Machinery Component (기계류부품의 가진시험 조건에 관한 연구)

  • Kim Hyoung-Eui;Park Jong-Won;Jung Dong-Soo;Kang Bo-Sik
    • Journal of Applied Reliability
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    • v.6 no.1
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    • pp.27-36
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    • 2006
  • It is increasingly important to ensure that a given vibration test specification of a particular machinery component is appropriately established by considering its real environmental conditions. Vibration test standards for electrical components are well documented, for example in an IEC 60068 series, while standards for machinery components are rarely found except a few military standards. Thus many vibration tests are performed based on the military standards. However, a test based on these military standards often results in over-testing, and under-testing in some cases due to the different environmental conditions. Also, these standards require an appropriate tailoring that may not be easily accomplished. In this paper, various international and military standards are compared and investigated to obtain test specifications relevant for machinery components. Also appropriate tailoring methods are demonstrated through a case study.

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Method of Clock Noise Generation Corresponding to Clock Specification

  • Lee, Young Kyu;Yang, Sung Hoon;Lee, Chang Bok;Kim, Sanhae;Song, Kyu-Ha;Lee, Wonjin;Ko, Jae Heon
    • Journal of Positioning, Navigation, and Timing
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    • v.5 no.3
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    • pp.157-163
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    • 2016
  • Clocks for time synchronization using radio signals such as global navigation satellite system (GNSS) may lose reference signals by intentional or unintentional jamming. This is called as holdover. When holdover occurs, a clock goes into free run in which synchronization performance is degraded considerably. In order to maintain the required precise time synchronization during holdover, accurate estimation on main parameters such as frequency offset and frequency drift is needed. It is necessary to implement an optimum filter through various simulation tests by creating clock noise in accordance with given specifications in order to estimate the main parameters accurately. In this paper, a method that creates clock noise in accordance with given specifications is described.

A Study on Supplement of Harbour and Fishery Design Criteria through the Statistical Characteristics Analysis of Cruise Ship's Specification (크루즈선 주요 제원분석을 통한 항만 및 어항설계기준 개선 연구)

  • Cho, Ik-Soon;Cho, Jang-Won
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.23 no.6
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    • pp.652-660
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    • 2017
  • Recently, the number of tourists using cruise ships in Korea is increasing. and an big cruise ship with an gross tonnage of 160,000 tons or more has entered the domestic ports. Therefore, the government has been making a lot of efforts to confirm the cruise infrastructure for revitalization of the domestic cruise industry. However, there are no standards for cruise ship specifications and water facilities in the domestic port and fishery design standards. Currently, construction of dedicated cruise facilities is under way in major domestic ports. However, due to lack of specifications and domestic standards for cruise ships, it is difficult to design and license special facilities. Therefore, in this study, PIANC rule and domestic harbor and designing standard of fishing port were compared and analyzed in order to present the standard specification of cruise ships. And analyzed the representative linearity of cruises currently being operated. As a result of the ship characteristics analysis, There was a difference in coastal passenger ship in specifications and ship maneuverability. Therefore, in order to design facilities dedicated to cruising, the specifications of the target ship must be included in the domestic design standard. In addition, in order to calculate the scope of the target ship, I applied the coverage rate of 75% to the average specification value of the cruise ship and presented the standards of the cruise ship and the standard of the water area facilities.

Direction to Produce International Owner's Basic Specifications;Focus on Water Resource Projects (국제 전문시방서(영문) 작성방향;수자원개발사업을 중심으로)

  • Kim, Tae-Song;Koo, Jai-Dong
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.624-627
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    • 2006
  • This study is to establish the direction to produce owner's basic specifications (English version) necessary for producing project specifications available internationally in the projects to develop water resources. The principal conclusions of this study are as follows; (1) The original text necessary for producing the international owner's basic specifications should be specifications of one part between northern America and Europe. (2) The work break down structure of the international owner's basic specifications shall be conform to the international break down structure of specifications, and the MasterFormat(2004) of CSI is recommended. (3) The construction management methods, for example, as to standards, laws, and etc. in the international owner's basic specifications should be available internationally.

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Roadmap Toward Certificate Program for Trustworthy Artificial Intelligence

  • Han, Min-gyu;Kang, Dae-Ki
    • International journal of advanced smart convergence
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    • v.10 no.3
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    • pp.59-65
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    • 2021
  • In this paper, we propose the AI certification standardization activities for systematic research and planning for the standardization of trustworthy artificial intelligence (AI). The activities will be in two-fold. In the stage 1, we investigate the scope and possibility of standardization through AI reliability technology research targeting international standards organizations. And we establish the AI reliability technology standard and AI reliability verification for the feasibility of the AI reliability technology/certification standards. In the stage 2, based on the standard technical specifications established in the previous stage, we establish AI reliability certification program for verification of products, systems and services. Along with the establishment of the AI reliability certification system, a global InterOp (Interoperability test) event, an AI reliability certification international standard meetings and seminars are to be held for the spread of AI reliability certification. Finally, TAIPP (Trustworthy AI Partnership Project) will be established through the participation of relevant standards organizations and industries to overall maintain and develop standards and certification programs to ensure the governance of AI reliability certification standards.

Development of Extended IFC Schema for BIM-based Korean Construction Standards Review (BIM 기반 국가건설기준 검토 수행을 위한 확장형 IFC 구조 개발)

  • Suk, Chae-Hyun;Jeong, Yu-Jeong;Yu, Young-Su;Koo, Bon-Sang;Ryu, Sang-Hun
    • Journal of KIBIM
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    • v.14 no.2
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    • pp.35-49
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    • 2024
  • IFC, a neutral standard data model for BIM, ensures data interoperability across BIM applications but struggles with adapting to diverse construction standards across countries and regions. In practice, the standard IFC schema does not include the entity and attribute information necessary for reviewing Korean Construction Standards. To overcome this, this study developed an extended IFC schema that incorporates design and construction standards data specifically for bridge. The extended IFC schema defines entities for representing types of bridges, structures, and elements, and Psets for containing relevant standards information. This schema is customized to be compatible with both Korean Design Standards (KDS) and Korean Construction Specifications (KCS). Additionally, based on the extended IFC schema, a specialized extension module was developed, capable of embedding design and construction standards data by element within IFC Physical File. Through this module, the necessary design and construction standards were inserted into specific elements.