• 한국철도학회논문집
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• 제9권3호
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• pp.330-334
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• 2006

To maintain design-knowledge database and manage configuration for requirement of performance tests and safety standards of High Speed Railway(HSR), It is established that management system of performance tests and safety standards and then constructed that design-knowledge database and documented a performance test and safety specifications for supporting performance test and safety system using Model-Based Systems Engineering(MBSE) tool.

• International Journal of Precision Engineering and Manufacturing
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• 제7권2호
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• pp.56-59
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• 2006

A vibrational model of powder transfer equipment based on the lumped parameter method was developed, in which the operating motion consists of surging, bouncing, and pitching. After decoupling the equation of motion, the vibrational excitation source of the pitching motion was removed. So the designers are able to plan the optimum design to adjust the motion trajectory of the powder transfer equipment. That is, a procedure to adjust the motion trajectory of powder transfer equipment by changing design specifications such as the installation position, the direction of the motor, the driving speed, the mass unbalance, the stiffness coefficient, and the installation position of the support spring, is presented in this paper. The powder transfer equipment manufactured according to the results of this study did not suffer fatigue destruction, since the maximum stress on the basket structure was sufficiently small.

• Journal of information and communication convergence engineering
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• 제20권1호
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• pp.8-15
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• 2022

The new 5G radio technology (NR) can provide ultra-reliable low latency communications. The supporting 5G network infrastructure will move away from the previous point-to-point network architecture to a service-based architecture. 5G can provide three new things, i.e., wider channels, lower latency and more bandwidth. These will allow 5G to support three main types of connected services, including enhanced mobile broadband, mission-critical communications, and the massive Internet of Things (IoT). In 2015, the 5th generation (5G) mobile communication was officially approved by the International Telecommunication Union (ITU) as IMT-2020. Since then, 3GPP, the international organization responsible for 5G standards, is actively developing specifications for 5G technologies. 3GPP Release 15 provides the first full set of 5G standards, and the evolution and expansion of 5G are now being standardized in Release 16 and 17, respectively. This paper provides an overview of 3GPP 5G technologies and key services.

• 기록학연구
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• 제18호
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• pp.139-178
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• 2008

최근 공표된 국내외 기록관리시스템 기능요건 표준은 기록관리 핵심 기능뿐 아니라 시스템관리와 선택적인 기능의 요건을 포함하여 상세한 수준에서 요건 기술을 하고 있다. 기능요건은 전자기록 관리의 실무 경험을 토대로 만들어지며, 정보기술의 표준화를 기반으로 전자기록 실무가 표준화되어 가는 추세에 따라 기능요건 표준들도 점차 내용적 공통성을 확보해 가고 있다. 또한, 기록관리전문가, 정보기술 전문가, 컨설턴트, 기록관리 응용패키지 벤더 등 다양한 전문가 그룹의 참여와 협력으로 만들어진 기능요건은 품질 수준이 향상되고 있을 뿐만 아니라 국제적 표준화의 경향도 높아지고 있다. 선진 모범 실무를 기반으로 만들어진 기록관리시스템 기능요건 표준을 벤치마킹하여 실무적 해석을 통해 유용한 시사점을 얻을 수 있다. 이 논문에서는 기록관리의 핵심이라 할 수 있는 분류와 처분 영역의 기능요건을 기록관리 업무와 연관하여 해석함으로써 우리나라 전자기록 실무에 의미있는 시사점을 얻고자 한다. 첫 번째로 분류의 계층 수를 고정적인 개수로 제한할 필요가 있는지, 분류의 말단에만 편철을 해야 하는지를 논의해 보고, 두 번째로 보유기간 기산일을 이벤트 방식으로 설정하는 방식의 특징과 상속개념을 이용하여 다중의 처분지침을 적용하는 방법에 대해 살펴보고, 세 번째로 기록관리가 조직의 규제준수와 위험관리에 대응하는 대안이 되어야 한다는 전제하에 각종 규제에 적극적으로 대응하기 위해 필요한 처분보류와 해제 기능에 대해 알아본다. 마지막으로 기록관리시스템이 기록관리자의 유용한 도구가 되기 위해 필수적인 기능인 대량 일괄작업에 대해 예시하고 있다. 기록관리자들은 기록관리시스템 기능요건 표준을 실무적 관점에서 해석할 줄 알아야 하며, 실무에 필요한 요건을 도출하여 전문적인 전자기록관리 업무 수행의 주요 도구인 기록관리시스템을 고도화해 나갈 수 있어야 한다. 국가기록원은 기록관리시스템 기능요건 표준의 적용 범위를 확대하여 다양한 이해당사자들이 공통의 기반에서 효과적, 효율적으로 전자기록관리 실무를 집행할 수 있는 토대를 마련해 가야 할 것이다.

• 한국인쇄학회:학술대회논문집
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• 한국인쇄학회 2007년도 추계 학술논문 발표회
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• pp.29-43
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• 2007

Web offset newspaper prints is the most widely used printing process in domestic printing industry, but there are no industry-wide specifications for press control to assure consistent quality across newspaper printing plants. As newspaper printing becomes more of a commodity and less of an art, it is necessary to develop the print quality specification standard suitable for Korea web offset newspaper printing field. There are a few commonly employed printing standards such as, SNAP(Specification for Non-Heatset Publication) of the US, IFRA(INCA-FIEJ Research Association), J-color (Japan printing machinery association). And there exists KS for domestic standards, however, since it has been directly imported from ISO standards, there are discrepancies in printing materials and media. This paper aims to examine the color reproduction quality of domestic web offset newspaper prints by comparing with foreign standards. Printing experiments on this study have been performed at one of the domestic newspaper printing companies. The color reproduction properties of the web offset newspaper prints are measured by means of densitometry and colorimetry. These measures are evaluated comapratively with the international standards by means of analyzing, the major factors that determine the color reproduction quality of web offset newspapar prints.

• 한국인쇄학회지
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• 제25권1호
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• pp.27-41
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• 2007

Web offset newspaper prints is the most widely used printing process in domestic printing industry, but there are no industry-wide specifications for press control to assure consistent quality across newspaper printing plants. As newspaper printing becomes more of a commodity and less of an art, it is necessary to develop the print quality specification standard suitable for Korea web offset newspaper printing field. There are a few commonly employed printing standards such as, SNAP (Specification for Non-Heatset Publication) of the US, IFRA(INCA-FIEJ Research Association), J-color (Japan printing machinery association). And there exists KS for domestic standards, however, since it has been directly imported from ISO standards, there are discrepancies in printing materials and media. This paper aims to examine the color reproduction quality of domestic web offset newspaper prints by comparing with foreign standards. Printing experiments on this study have been performed at one of the domestic newspaper printing companies. The color reproduction properties of the web offset newspaper prints are measured by means of densitometry and colorimetry. These measures are evaluated comapratively with the international standards by means of analyzing, the major factors that determine the color reproduction quality of web offset newspaper prints.

• Progress in Superconductivity
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• 제12권1호
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• pp.57-61
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• 2010

We have developed a whole-head MEG system for basic brain research and clinical application. The sensor system consists of a 152 SQUID gradiometer array oriented and located in a suitable way to cover a whole head of the human. The system measures magnetic fields generated by neuronal currents in the brain to get information on the brain activities. For this purpose, the field sensitivity determined by the position, orientation and geometry of the pickup coil as well as amplification factor of the electronic circuits should be known precisely. However, the position and orientation of the pickup coil might be changed from the designed specifications during cool down of the dewar and it is necessary to characterize the field sensitivity. In this study, we made calibration systems to determine the actual position and orientation of the 152 pickup coils and compared the localization results of the N100m source in the auditory cortex.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제24권4호
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• pp.27-35
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• 2018

Purpose: The diverse users and the increase of power wheelchair users have made it difficult to apply the standards of Wheelchair user accessible toilet rooms for the existing law and BF-certification. To address these issues, the standards of the relevant laws have been improved (Ministry of Health and Welfare, 2018), but there are still many problems. In this study, problems with the standards for Wheelchair user accessible toilet rooms in Korea are analyzed by comparing national and international standards. In addition, improvements to standards for Wheelchair user accessible toilet rooms will be suggested. Method: It presents improvement for standards of Wheelchair user accessible toilet rooms by comparing national, international standard and standards of many countries. Korean standard, International Standard(ISO 21542), American Standard(ADA Standards), German Standard(DIN 18040-1), Austrian Standard($\ddot{O}NORM$ B 1600) and Swiss Standard(Norm SIA 500) were investigated and analyzed. Results: Korea's standards differ from the ISO and the Standards of other countries in many ways, so there is a need for realignment. Specifications for disabled toilets and clear criteria for the size, shape, and location of sanitary appliances in toilets that are practically available to wheelchair users should be provided. Considering the increasing number of disabled toilet users, the installation of various disabled toilet rooms should be considered considering the user characteristics of those who can walk and wheelchair users. Implication: Recent partial improvements to relevant laws cannot meet the requirements of various users. Therefore, comprehensive and clear standard should be presented that take into account changing society and the environment.

• 한국농공학회논문집
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• 제66권1호
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• pp.39-48
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• 2024

Plastic greenhouses are simple structures consisting of lightweight materials such as steel pipes and polyvinyl chloride. However, serious damage occurs due to heavy winds and typhoon every year. To prevent a collapse of structural members, the Ministry of Agriculture and Rural Development has distributed plans and specifications for disaster-resistant standards. Despite these efforts, more than 50% of greenhouses still do not satisfy the disaster-resistant standards. Among the greenhouses that do not meet these standards, 85% are single-span greenhouses proposed 20 years ago. Consequently, there is a need to evaluate the safety of wind loads for the single-span greenhouse. Unfortunately, there are no design specifications for the greenhouses under wind loads. Therefore, a Korean design standard (KDS) has been utilized. KDS is defined with reference to wind speeds occurring once every 500 years, raising concerns about potential overdesign when considering the durability of plastic greenhouses. To address this, the modified wind load, considering the durability of the plastic greenhouse, was calculated, and a safety evaluation was conducted for sigle G-type plastic greenhouse. It was observed that the moment acting on the windward surface was substantial, and there was a risk of the foundation being pulled out if the basic wind speed exceeded 32 m/s. In terms of the combination strength ratio, it was less than 1.0 only on the leeward side when the basic wind speed was 24 m/s and 26 m/s. However, in all other cases, it exceeded 1.0, indicating an unsafe condition and highlighting the necessity for reinforcement.

• 복식
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• 제52권2호
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• pp.59-70
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• 2002

For the purpose of providing basic data for the development of size specifications for middle-aged women in Busan, one dimensional measurements were made with the subjects. ranging 45 to 59 in age. The following are the conclusions : 1) According to ages, the middle and elder groups of the middle-aged women shared similar body types, having shorter height, more lowered bust. and increased upper-body depth and girth factors, compared with the earlier middle-aged women group. But the thigh girth of the elder middle-aged group (age: 55∼59) was the lowest, maybe owing to the aged lower-body muscles. 2) In the comparison with national averages. armhole girth, elbow girth, wrist girth. back waist length, side neck point-B.P.-waist line, and sleeve length showed great differences. This is problematic in that the national size standards fail to reflect each legion\`s peculiar body type characteristics. 3) Even though body types were classified according to drop value criteria suggested by KS specifications, 23.05% did not belong to the criteria. They were thus classified as A, N, and H body types, following the distribution of the present experiment. 4) In consideration of the economy factor of the production and sales of the clothes industry, the combinations of height and chest garth for the middle-aged Busan women were as follows: 155cm-85cm (Body Type A) 150cm-88cm (Body Type N), and 155cm-94cm (Body Type H).