• 제목/요약/키워드: Related standard

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A Study on the Impacts of Mirror Design Parameters on the Wind Noise (미러 형상인자가 바람소리에 미치는 영향에 대한 연구)

  • Ih, Kang-Duck
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2009.10a
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    • pp.130-136
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    • 2009
  • The goal of this paper is to develop a standard side mirror geometry that will perform well across multiple vehicles. One of the important performance attributes of a side mirror is the amount of wind noise generated under the flow conditions on a car. PowerFLOW can be used for Computer Aided Testing of the aeroacoustics performance of a design in addition to directing design modifications based on a detailed analysis of the flow structures responsible for the noise generation. Alternatively, a Design of Experiment (DOE) approach is useful to explore the design space without any a-priori assumptions of the effects of design parameter changes. Some general design guidelines regarding the significant mirror geometry factors will be determined which may help to reduce vehicle development time and cost in the future. The results of this research will also allow us to estimate the trade-off between cost saving and performance optimum related to using a standard mirror shape for different vehicles.

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A Study on Character of Consolidation for Radial Drainage of Pohang배s Clay Ground (포항 점토 지반의 수평배수 압밀특성 연구)

  • Lee, Song;Jeon, Je-Sung;Kim, Won-Young
    • Proceedings of the Korean Geotechical Society Conference
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    • 2000.03b
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    • pp.685-692
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    • 2000
  • Vertical drain used improvement soft clay is made of not only decreasing construction time but also increasing the ground strength during some decades. As, it is applied to improvement soft clay with vertical drain, it is designed by the result that is caused by oedemeter test ignored anisotropic of the ground related to consolidation conditions. When we are expected consolidation conditions, the most important factors is soil of compaction and water permeability. Above all, anisotropic of the ground permeability show the results which differ between vertical and radial drainage. Recently, We study for radial consolidation coefficient and permeability coefficient that utilized Rowe Cell Consolidation and permeability tester but, it dont use well because of not only a supply lack also difficulty of test. The paper experimented with searching anisotropic of the ground so there are Rowe Cell test, standard consolidation tester and modified standard consolidation test that have pohang's soft clay ground. Therefore, we find anisotropic of the ground and a tester of easy use more than before. We made a comparison test result between the devised tester and Rowe Cell tester, Also, we learned average degree of consolidation for partial penetrating vertical drains. We were found relations as effective stress-void and effective stress-permeability coefficient through those tests.

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Normalization of DBTT Size Effect far Aged 1Cr-lMo-0.25V Steel (열화된 1Cr-1Mo-0.25V강의 DBTT 크기효과 보정에 관한 연구)

  • Nam, Seung-Hun;Kim, Eom-Gi;Lee, Dae-Yeol
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.25 no.12
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    • pp.2109-2115
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    • 2001
  • Miniaturized specimen technology is useful to characterize the mechanical behavior when it is difficult to sample the material enough for the test. In this study, two kinds of miniaturized Charpy impact specimens(i.e., miniaturized specimen with side groove and without side groove) of aged 1Cr- lMo-0.25V steel were prepared and tested. The relationship between the extent of degradation in terms of ductile brittle transition temperature(DBTT) and the fracture stress of 1Cr-1Mo-0.25V steel was established. The fracture stress obtained from miniaturized specimen without side groove turned out to be linearly related with the DBTT of standard specimen. Therefore the fracture toughness of aged turbine rotor steel might be evaluated by the fracture stress. In addition, the correlation between DBTT of standard specimen and that of miniaturized specimen was investigated. As the results of normalizing DBTT by maximum elastic tensile stress, the normalized DBTT of miniaturized specimen without side groove allows one to estimate that of standard specimen.

Audit Checking Items for the Efficient GIS Audit (효율적인 GIS 감리를 위한 감리 점검항목)

  • Cho, Yeong-Ju;Kim, Dong-Oh;Kim, Dong-Soo;Han, Ki-Joon
    • Journal of Information Technology Services
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    • v.11 no.2
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    • pp.213-228
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    • 2012
  • The construction of the Geographical Information System(GIS) is continuously in progress, and with the diversification and complication of the system, the importance of its audit is further deepened. At this point in time, the information system audit has been obligatory as it has been stipulated in law, and the GIS audit has come to follow the criterion of the information system audit since it belongs to the information system audit category. However, it was found that there was a difference between the current information system audit standard and the former GIS audit standard, and the audit checking items for the efficient GIS audit is necessary. For this reason, this paper surveyed the characteristics of GIS in accordance with this necessity, analyzed the GIS audit checking items found in the audit performance guideline of the GIS audit standard, and studied the GIS development methodology through the related literature. In addition, this paper also elicited and proposed the audit checking items for the efficient GIS audit based on the findings of this paper. Finally, this paper confirmed the efficiency of the GIS audit checking items proposed here through the comparison of the actual cases of GIS audits.

Comparative Study on the Official Compendia of Crude Drugs in Korea, China and Japan (한국·중국·일본 세 나라 생약관련 공정서 비교연구)

  • Kim, Hye-Jin;Park, Woo Sung;Bae, Eun Young;Lim, Dong-Hoon;Kim, Jinwoong;Ahn, Mi-Jeong
    • Korean Journal of Pharmacognosy
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    • v.47 no.4
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    • pp.389-398
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    • 2016
  • Korea, China and Japan have developed individually their own official compendia for crude drugs to tune with the times. Recent globalization has enlarged trade volume among these countries, and so the necessity for new quality standards has increased. This study was accomplished to offer basic data and appropriate suggestions to rebuilding standard principles for quality control of crude drugs in Korean official compendia. For this, seven standard items related to quality control in official compendia of these countries were compared. The items were identification, loss on drying, total ash, acid-insoluble ash, extract content, essential oil content and assay. The official compendia of three countries were the Korean Pharmacopoeia Eleventh Edition, the Korean Herbal Pharmacopoeia 2015, Chinese Pharmacopoeia 2015 and Japanese Pharmacopoeia Seventeenth Edition. Based on this basic research, new principles for each standard of crude drugs were suggested.

Magnetic Field Standards Using Magnetic Resonance

  • Park, Po Gyu;Kim, Wan-Seop;Joo, Sung Jung;Lee, Hyung Kew
    • Journal of the Korean Magnetic Resonance Society
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    • v.21 no.1
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    • pp.7-12
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    • 2017
  • The nuclear magnetic resonance (NMR) and atomic magnetic resonance (AMR) plays a fundamental role in achieving a high accuracy of magnetic field measurements. Magnetic field unit (T) was realized based on the shielded proton gyromagnetic ratio (${\gamma}^{\prime}_P$), helium-4 gyromagnetic ratio (${\gamma}_{4He}$) and related techniques. The magnetic field standard system has been disseminated by the NMR magnetometer and electromagnet, a Helmholtz coil system, and AMR magnetometer in the nonmagnetic laboratory. A magnetic field standard below 1 mT has been developed by using Cs and Cs- $^4He$ AMR with automatic compensation of an external magnetic field noise. The standards serve for the calibration of magnetometers and support the test of sensors and materials in the range from $5{\mu}T$ to 2.0 T with (1 to 50) ${\mu}T/T$ uncertainty (k=2).

Screening of 56 Herbal formulas covered by the National Health Insurance Service on Dementia-related Factors (World Federation Medical Education Global Standards의 교육과정 표준에 따른 한의학 교육 연구)

  • Lee, Jeong Hyeok;Kim, Byoung Soo
    • The Journal of Korean Medicine
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    • v.39 no.3
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    • pp.28-40
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    • 2018
  • Objectives: The aim of this study is to introduce the WFME Global Standards and Recognition process and to consider Improvement direction of Korean traditional medical curriculum. Methods: To Investigate the Standards and Recognition process of WFME and the traditional medical curriculum of each country(China, Taiwan, Japan, Korea). Results: The WFME Global Standards and Recognition process aims to train doctors who are educated and active in world standard medical Curriculum. The traditional medical colleges have not received recognition, but those colleges in Korea, China and Taiwan contain a lot of standards contents, and they need to be recognized if they belong to WDMS. Conclusions: Korea University of Oriental Medicine has a lot of subjects of WFME Standards and there is a medical education recognition association, which is advantageous for the standardization process of world medical education. Therefore, it is necessary to aim at world standard medicine while preserving the tradition of Oriental medicine, WFME Global Standards should be used to reorganize the curriculum and train a world-class medical professional.

A Study on the Economic Feasibility of 4-bed Rooms in Public Hospitals (공공병원의 4인병실 도입에 따른 경제적 타당성에 관한 연구)

  • Kwon, Soonjung;Chai, Choul Gyun;Choi, Kwangseok
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.20 no.3
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    • pp.41-48
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    • 2014
  • Purpose: At the moment, a lot of Public Hospitals in Korea have adopted 5 or 6 bedrooms as a standard multi-bedroom type. However 5-6 bedrooms have many problems related to inpatient satisfaction and nosocomial diseases. Therefore 4 bedroom is under considering for standard multi-bed room in Public Hospitals in Korea. This paper tries to prove that adoption of 4 bedroom in Public Hospitals has nothing to do with economic loss which is now an obstacle in adopting 4 bedrooms. Methods: 3 Methods have been used in this paper. 1) Comparative analysis between medical insurance fee and service cost for hospitalization has been conducted through literature survey. 2) Scenario analysis has been used for the estimation of inpatient number when 4 bedrooms are adopted in Public Hospitals. 3) Relation analysis between profit and proportion of 4 bedroom in Public Hospitals. Results: Adoption of 4 bedroom as a standard multi-bedroom in Public Hospitals has been proved to have nothing to do with the economic loss of hospitals. Implications: It is necessary to introduce and expand 4 bedrooms instead of 5-6 bedrooms in hospitals for the upgrade of hospital environment and easy control of cross infection in inpatient bedrooms.

A XML Based Conversion System for Secure Message Exchange (안전한 메시지교환을 위한 XML 기반의 변환시스템)

  • 오대균;홍창범;송정길
    • Journal of Internet Computing and Services
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    • v.3 no.4
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    • pp.1-9
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    • 2002
  • As a XML Schema has been settled to W3C as standard at May. 2001 and technologies like as XML. Xpath and NameSpace related with XML has been developing. XML is becoming the standard of the new document exchanging. Due to the ability expressing various types of documentstructure through XML, ebXML, RosettaNet, and BizTalk are using XML as a core technology in the part of e-Business, To make the task automatically in the B2B EC now, a standard XML document is needed. Internal documents in each company should be transformed differently without any loss to work with other companies. In this paper, transforming XML document based on JAVA servlet is considered as realization of a XML system to exchange documents safely.

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On the Development of Reference Guidelines for Self-evaluation of Organization's Systems Engineering and Project Management Capability (조직의 SEPMC 자체 평가에 유용한 참조기준 개발)

  • Choi, Young Gil;Lee, Jae Chon
    • Journal of the Korean Society of Systems Engineering
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    • v.8 no.2
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    • pp.27-36
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    • 2012
  • In modern systems, the operational capability of the system to the user needs is expanding rapidly to accommodate the size of the system, functionality, and interfaces are becoming increasingly complex. Accordingly, the systematic practice of project management and systems engineering in the system development process, as an important element in successful systems development is recognized. EIA/ANSI 632, ISO/IEC15288, the leading international standard for systems engineering and is the leading international standard on project management PMBOK. CMMI is also contains information about the activities of project management and systems engineering and worldwide basis to assess the maturity of an organization's ability to develop system being used. But CMMI model is too complex of structure and there are many overlap parts of contents. So there are many problems for members of organization understanding all of CMMI model, applying organization and, achieving improvement activity. In this study, through the analysis and integration between the model and the related standard coverage activities essential for successful systems development in organizations that require systems engineering and project management capabilities(SEPMC) for self-assessment and continuous improvement activities to provide useful reference guideline.