• Title/Summary/Keyword: Review Standard

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Critical Review on an Effect of Dietary Protein Content on the Xenobiotics Metabolism in Rats (식이성 단백질 함량이 Xenobiotics 대사에 미치는 영향)

  • 윤종국
    • Journal of the East Asian Society of Dietary Life
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    • v.5 no.3
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    • pp.385-394
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    • 1995
  • Our previous reports on the effect of dietary protein on methanethiol, ethacrynic acid, bromobenzene and carbon tetrachloride metabolism were overall reviewed. The methanethiol, ethacrynicacid and bromobenzene treated rats showed the more severe liver damage in those fed a low protein diet than those fed a standard protein diet. These xenobiotics treated rats showed the lower content of hepatic glutathione and its conjugated enzyme, glutathione S-transferase activities in those fed a low protein diet than those fed a standard protein diet. In case of carbon tetrachloride treated rats, the liver damage was more reduced in rats fed a low protein diet than those fed a standard protein diet. Concomitantly the hepatic cytochrome P-450 content, and its decreasing rate to the control were lower in rats fed a low protein diet than those fed a standard protein diet.

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Neural Network based Video Coding in JVET

  • Choi, Kiho
    • Journal of Broadcast Engineering
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    • v.27 no.7
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    • pp.1021-1033
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    • 2022
  • After the Versatile Video Coding (VVC)/H.266 standard was completed, the Joint Video Exploration Team (JVET) began to investigate new technologies that could significantly increase coding gain for the next generation video coding standard. One direction is to investigate signal processing based tools, while the other is to investigate Neural Network based technology. Neural Network based Video Coding (NNVC) has not been studied previously, and this is the first trial of such an approach in the standard group. After two years of research, JVET produced the first common software called Neural Compression Software (NCS) with two NN-based in-loop filtering tools at the 27th meeting and began to maintain NN-based technologies for the common experiment. The coding performances of the two filters in NCS-1.0 are shown to be 8.71% and 9.44% on average in a random access scenario, respectively. All the material related to NCS can be found in the repository of the JVET. In this paper, we provide a brief overview and review of the NNVC activity studied in JVET in order to provide trend and insight for the new direction of video coding standard.

A Study on the Career Development Path of Standard Expert for the 4th Industrial Revolution (제4차 산업혁명에 대응하는 표준전문가 경력경로 연구)

  • Hwang, Yunwon;Song, Yongchan
    • Journal of Digital Convergence
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    • v.15 no.12
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    • pp.101-109
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    • 2017
  • This study seeks the career development path for standard professional manpower training to respond to the $4^{th}$ industrial revolution based on the analysis of overseas professional manpower training from USA and EU. Based on the cases of USA & Europe and in-depth interview, this study suggested a professional manpower training system to cultivate both general expert and specialists at the same time. The study suggested that there is a need to train standard professional manpower with convergence professionalism that can combine the detailed fields in accordance with general and specific field. As for the program helping career development of professional manpower, job transfer/circulation system, career counseling, mentoring were suggested. Also, the study suggested that the training requires foundations such as various constructions of certification system of standard professional manpower, securing instructors with ability to conduct standard education wand professionalism, and empowerment through reeducation of current standard related manpower. This study is limited as it is a descriptive study based on domestic and overseas literature review and overseas case analysis in seeking career development path for professional manpower training. There is a need to diversify empirical research that could review the validity of the study result related to the $4^{th}$ industrial revolution and standard professional manpower.

A Study on Improvement of Safety & Quality Management Standard Based on Compression Tests of Steel Pipe Supports (강재 파이프서포트의 압축하중 시험에 따른 안전 및 품질관리 기준 개선에 관한 연구)

  • Oh, Byoung-Han;Choi, Byong J.
    • Journal of the Korean Society of Safety
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    • v.33 no.2
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    • pp.94-103
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    • 2018
  • As of July 1, 2017, the method of quality management of construction equipment had been changed completely. In case of manufacturing and distributing pipe supports, the support length according to the safety certification standard shall be not more than 6 m and the compressive strength shall be not less than 40,000 N at the maximum height. However, the field tests for the quality control standard were usually performed at 3.5 m when the length of the pipe supports is 3.5 m to 4.0 m, and the compression strength was specified to be more than 35,300 N. This difference in the two standards can cause confusion in practice. In this study, the compression load of the pipe supports was tested and found to be more than 30% defective. Therefore, it is necessary to review the modification of the safety certification and quality standards to improve the standard requirements.

Overview on Standards for Liquefaction Triggering Evaluation using the Simplified Method (간편법을 이용한 액상화 평가 기준에 대한 고찰)

  • Kim, Yeon-Jun;Ko, Kil-Wan;Manandhar, Satish;Kim, Byungmin;Kim, Dong-Soo
    • Journal of the Earthquake Engineering Society of Korea
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    • v.24 no.5
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    • pp.197-209
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    • 2020
  • Evidence of liquefaction during the 2017 Pohang earthquake has highlighted the urgent need to evaluate the current seismic design standard for liquefaction in Korea, particularly the liquefaction triggering standard. With the simplified method, which is the most popular method for evaluating liquefaction triggering, the factor of safety for liquefaction triggering is calculated via the cyclic stress ratio (CSR) and the cyclic resistance ratio (CRR). The parameters in the CSR and CRR have undergone changes over time based on new research findings and lessons learned from liquefaction case-histories. Hence, the current design standard for liquefaction triggering evaluation in Korea should also reflect these changes to achieve seismic safety during future earthquakes. In this study, liquefaction susceptibility criteria were discussed initially and this was followed by a review of the current liquefaction triggering codes/guidelines in other countries and Korea. Next, the parameters associated with the CSR such as the maximum ground acceleration, stress reduction factor, magnitude scaling factor, and overburden correction factor were discussed in detail. Then, the evaluation of the CRR using the SPT N-value and CPT qc-value was elaborated along with overburden and clean-sand correction factors. Based on this review of liquefaction triggering evaluation standards, recommendations are made for improving the current seismic design standard related to liquefaction triggering in Korea.

A Study on Establishment of Design Criteria for Development of New TWSIs (신형 점자블록 개발을 위한 설계원칙 설정 연구)

  • Shin, Dong-Hong;Seong, Ki-Chang;Kim, Sang-Woon
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.22 no.1
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    • pp.29-37
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    • 2016
  • Purpose: Since the end of the 1990s the question of detecting blind and vision-impaired persons' tactile walking surface indicators have been rasied, the study of detecting tactile walking surface indicators has been started in Japan, German, and Sweden. Through the study, Japan, German, Sweden, and international's standard was revised. The Korean standard of tactile walking surface indicators was revised in 2013, the remarkable point was missed. Therefore, this study suggested deriving a range of types and dimensions of tactile walking surface indicators reasonable, and presenting the design principles for the development of new tactile walking surface indicators though domestic and international literature review. Method: This study was proceeded by comparison analysis of results from various tactile walking surface indicators' literature review from Japan, German, and Sweden, the most suitable range of types and dimensions was abstracted. Then, the range of types and dimensions was compared to the international standards and international reference standard, the ground rules were confirmed to apply new tactile walking surface indicators design. Results: Rationally, the wide and diameter of projecting line and projecting point should be downsized in order to improve detecting blind and vision-impaired persons' tactile walking surface indicators. And with same purpose, the ratio of the wide and diameter of projecting line and projecting point should be decided. The design of the tactile walking surface indicators in addition to the size and spacing of the protrusions should be to reflect the common elements that have been suggested a number of standard criteria. Implication: In this study, the design principles was derived through test results and theoretical studies, and new tactile walking surface indicators would need to be validated in local user.

Comprehensive Review of Standard Occupational Classification (SOC) as used in the Occupational Safety and Health Field (산업안전보건분야에서 표준직업분류(Standard Occupational Classification, SOC) 활용 사례 고찰 및 향후 국내 도입 방안 제언)

  • Park, Donguk;Choi, Sangjun;Byun, Hyaejeong;Kim, Yangho;Kim, Soogeon;Ha, Kwonchul;Kang, Taesun
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.23 no.1
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    • pp.11-19
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    • 2013
  • Backgrounds: Occupations are grouped on the basis of similarity in tasks and duties performed. Standard occupational classification (SOC) is a tool for organizing all professions into a clearly defined set of groups according to the tasks and duties undertaken in the respective jobs. Objectives: The major objective of this study is to comprehensively review how a SOC system is used in occupational and safety fields such as surveillance, exposure monitoring, occupational epidemiological study, management of carcinogens and analysis of occupational accidents. Methods: We summarized the cases, policies and regulations used in SOC systems in advanced countries and as they appear in articles Results: We found that SOC systems have been widely used in various areas of occupational safety and health in the US, the UK, Finland, and the EU. In general, it is highly common to use SOC in the analysis of occupational accidents and diseases and to identify factors causing those accidents. The SOC system is also used not only for surveillance of exposure to hazardous agents and occupational health, but to manage carcinogens. In order to adjust the effects of a particular job, SOC is used in the general population health area. The Ministry of Employment and Labor (MOEL) has never used or introduced an SOC system. There have been no cases of the application of a SOC system to either the occupational safety and health field or to health surveillance for the general population in Korea. Conclusions: We suggested a need to introduce an SOC system in several occupational safety and health activities, such as work environment measurement, analysis of occupational accidents, specific physical examination and surveillance systems, etc.

Electromechanically assisted walking in patients with cerebral palsy: A meta-analysis

  • Kim, Kwonhoi;Lee, Sukmin
    • Physical Therapy Rehabilitation Science
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    • v.10 no.1
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    • pp.22-31
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    • 2021
  • Objective: This review aims to analyze the effects of electromechanically assisted walking in patients with cerebral palsy(CP). Design: A systematic review and meta-analysis. Methods: We reviewed systematically using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) checklist guidelines. The inclusion criteria for this study were all CP patients. The intervention was electromechanically assisted walking. The outcome measures included gait parameters, function, spasticity. Studies excluded from this review were excluded from the review if they were non-English languages and if the study was not published as a full report, and if they were not randomized controlled trials (RCTs) designs. The RevMan 5.4 program was used to evaluate and explain the results. The risk of bias was evaluated independently by two reviewers. The quantitative meta-analysis, including mean differences (MD) and associated standard deviations (SD) from baseline and follow-up assessments, were recorded. Results: A total of 634 articles were searched. Two hundred eighty-nine duplicate articles were excluded, and 345 of 634 originals were left for selection. Of these 74 papers, 44 were out of topic, and 19 reported no mean or standard deviation values. And one was a non-experimental study. Finally, ten studies were included. All 10 RCTs of electromechanically assisted walking were analyzed. The meta-analysis showed a significant improvement in gait cycle (95% CI (confidence intervals), 0.09 to 0.19, I2=0%), Gross Motor Function Measure (GMFM) D (95% CI, 3.27 to 13.17, I2=0%) and GMFM E (95% CI, 0.22 to 6.41, I2=0%). Conclusions: Electromechanically assisted training helps in walking in patients with CP.

New Drug Listing Process and Reimbursement Standard Management (약제의 신규등재 절차와 급여기준 관리)

  • Yoon Kyeong Bai;Mi-Young You
    • Journal of Digestive Cancer Research
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    • v.11 no.2
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    • pp.104-107
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    • 2023
  • The Ministry of Health and Welfare of Korea has implemented various social security programs to ensure a basic standard of living and raise overall quality of life for all citizens. The Korean social security system provides social insurance, public assistance, and social welfare services. To achieve adequate drug benefits, the Drug Management Department of Health Insurance Review and Assessment Service (HIRA) implement drug management duties including drug listing, upper price limit setting, scope of benefits, and post-factum management. When a manufacturer or an importer wants to apply for National Health Insurance (NHI) coverage of the drug that has obtained safety and efficacy approval, the pharmaceutical benefit assessment committee of HIRA evaluates the drug's clinical efficacy and cost-effectiveness to determine whether or not to include the drug into the benefit package. The benefit standards for a listed drug (ingredient) are set either for the whole permitted range or a part of range with conditions. To increase the coverage rate for new drugs, the listed drugs are regularly reviewed for their value. The status of listed drugs can be adjusted or eliminated from the benefit package if the clinical efficacy turns out to be insignificant. Therefore, through these pharmaceutical management procedures, high-quality drugs are provided at reasonable prices, which save healthcare expenditure by price determination and selective coverage in consideration of economic evaluation.

A Study on the Standard of Document Examination for Letters of Credit Issuing Bank (신용장개설은행(信用狀開設銀行)의 서류검토기준(書類檢討基準)에 관한 연구(硏究))

  • Kim, Young-Hoon
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.16
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    • pp.35-58
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    • 2001
  • The letter of credit is quintessentially international. In the absence of international legal system, a private system based on banking practices has evolved, commanding the adherence of the international letter of credit community and providing the foundation of th reputation of this instrument. To maintain this international system, it is vital that international standard banking practice should not be subject to local interpretations that misconstrue or distort it. The UCP is a formulation of international standard banking practice. It is neither positive law nor a "contract term" in any traditional sense and its interpretation must be consonant with its character as a living repositary of international understanding in this field. As a result, the interpretation and application of specific articles of the UCP must be consistent with its evolving character and history and with the principles upon which sound letter of credit practice is predicated. This study, especially, focuses on article 13 of the UCP500 and 95UCC 5-108. Both articles introduce a standard of document examination to be used by banks to determine whether they comply facially with the terms of the credit. While, in the UCP, this standard is called international standard banking practices, in the UCC, this standard is called standard practices. I think that both standards are not same. Thus, first, this study look for categories of both standards and scope of application. the second subject is how can issuing bank act in the face of non-documentary condtion under this standard of document examination. Third is correlation between the principle of Strice Compliance and the standard.

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