• 제목/요약/키워드: Choi criteria

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Assessment of the Water Quality of Jungnang Stream by Flow Conditions Using Load Duration Curve (부하지속곡선을 이용한 중랑천의 유량 조건별 수질특성 평가)

  • Choi, Kyung-Wan;Shin, Kyung-Yong;Lee, Hyung-Jin;Jun, Sang-Ho
    • Journal of Environmental Health Sciences
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    • v.38 no.5
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    • pp.438-447
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    • 2012
  • Objective: The objective of this study was to suggest a method through which load duration curve was used to assess the achievement of water quality targets in accordance with the criteria for pollutant load depending on flow rate variation. Methods: The stage-discharge curve and flow duration curve of Jungnang Stream were deduced. Using water quality targets and measurement of the stream, the flow duration curve was also drawn. Based on these, the feasibility of achievement of water quality targets in respect to flow rate was assessed. Results: In terms of the load duration curve of the stream, it was observed that excess of criteria for concentrations of $BOD_5$, $COD_{Mn}$ and SS frequently occurred. On the other hand, when the flow rate was low, the concentrations of T-N and T-P exceeded the criteria. Conclusions: Through the load duration curve, the overall water quality of Jungnang Stream was understood. When the flow rate is high, management of point source of $BOD_5$, $COD_{Mn}$ and SS is needed to achieve water quality targets for Jungnang Stream. On the other hand, when the flow rate is low, the management of non-point source T-N and T-P is necessary to attain the water quality goal.

The Improvement Plan of Project Delivery Systems in the Public Construction Projects (공공건설사업의 발주방식 개선방안)

  • Choi, Eun-A;Kim, Hyun;Park, Sung-Yong;Cho, Hyeong-Jin;Lee, Sang-Beom
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.509-512
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    • 2008
  • Clients demands have been changed by construction circumstances such as high-technology, mega-projects, and the complexity of construction. Advanced foreign countries have already introduced and applied new project delivery systems(i.e, CM, DB, etc.) to deal with the change of such that. Recently, Korea also launched two new project delivery systems, "Best Value Contracts to which the State is a Party" to provoke the project delivery system, which helps a public owner select a project delivery system appropriate to the project characteristics. Even though government has made his efforts as stated above, some clients have still used those to public construction projects uniformly. That is because there are not a selection criteria of project delivery system for clients. Therefore, this paper proposes the selection criteria of project delivery system based on project types in the public large construction projects.

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Research Trend Analysis of the Prevalence of Complementary and Alternative Medicine in Korea (국내 보완대체의학 사용 실태조사 연구의 동향 분석)

  • Kim, Sul-Gi;Lee, Sang-Hun;Seo, Hyun-Ju;Baek, Seung-Min;Choi, Sun-Mi
    • The Journal of Korean Medicine
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    • v.33 no.1
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    • pp.24-41
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    • 2012
  • Objectives: This study reviewed research trends concerning the prevalence of complementary and alternative medicine (CAM) use and to suggest future research directions appropriate to medical circumstances in Korea. Methods: We searched for surveys of CAM use in 8 databases including 6 Korean databases, Ovid MEDLINE, and the CINAHL electronic database. Three independent reviewers working in pairs screened titles and abstracts of articles for eligibility. Full text was retrieved in case of disagreement on the eligibility. The main analysis targets included survey researcher's affiliation, terminology used in the title, study subject, definition of CAM, classifications of CAM modalities, and the area assortment of CAM and traditional Korean medicine (TKM). Results: 92 articles were included for analysis. The major constituent of affiliation was doctors (53%). According to years, study subjects were diversified to a large range of diseases. Since 2003, terminology is absorbed to use CAM. But actually, the most commonly used definition in the research was comprehensive such as "not generally considered part of major medicine" (55.4%) and the most used classification of CAM was self-criteria (61.9%). As for area assortment of CAM and TKM, many therapies exist in a gray zone between CAM and TKM. Conclusions: Standardized definition and classification criteria about CAM fit to the Korean healthcare system have not yet developed. For traditional Korean medicine academia, more concern should be paid to establishing appropriate development of definitions and classification criteria.

Proposal on Guideline for Quality Assurance of Radiation Treatment Planning System

  • Oh, Yoonjin;Shin, Dong Oh;Kim, Juhye;Kwon, Nahye;Lee, Soon Sung;Choi, Sang Hyoun;Ahn, Sohyun;Park, Dong-wook;Kim, Dong Wook
    • Progress in Medical Physics
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    • v.28 no.4
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    • pp.197-206
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    • 2017
  • We develop guidelines for the quality assurance of radiation treatment planning systems (TPS) by comparing and reviewing recommendations from major countries and organizations, as well as by analyzing the AAPM, ESTRO, and IAEA TPS quality assurance guidelines. We establish quality assurance items for acceptance testing, commissioning, periodic testing, system management, and security, and propose methods to perform each item within acceptable standards. Acceptance includes tests of hardware and network environments, data transmission, software, and benchmarking as specified by the system supplier, and apply the IAEA classification criteria. Commissioning includes dosimetric and non-dosimetric items for assessing TPS performance by applying the AAPM classification criteria and the latest technical items from the IAEA. Periodic quality assurance tests include daily, weekly, monthly, yearly, and occasional items by applying the AAPM classification criteria. System management and security items include the state and network connectivity of TPS, periodic data backup, and data access security. The guidelines for TPS quality assurance proposed in this study will help to improve the safety and quality of radiotherapy by preventing incidents related to radiotherapy.

Performance Evaluation of Government R&D Programmes: A Case of KFDA (정부 연구개발 사업의 성과평가: 식품의약품안전청의 사례)

  • Hong, Soon-Wook;Cho, Yong-Gon;Kim, Dong-Sul;Choi, Hyen-Cheol;Cho, Keun-Tae
    • Journal of Korea Technology Innovation Society
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    • v.9 no.3
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    • pp.391-411
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    • 2006
  • The purpose of this report is to suggest a new set of evaluation criteria which emphasizes the aspects of outputs and outcomes, and, therefore, reflects a portion of unique features of the KFDA's R&D programmes. Using the criteria, we demonstrate that the overall performance of KFDA's R&D programmes should be re-evaluated, and underscore that the characteristics and mission of a specific institute is also important in evaluating its performance. The results reveal that the overall performance of KFDA's R&D effort is more positive than what has been known. This difference essentially stems from the difference between the present that are universal but stiw and the suggested criteria that are based on missions of and results possibly achieved by the institute. In this regard the approach used in this case study could be taken into account in improving the evaluation system of government R&D programmes.

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A Study on the Material Characteristics of the HSA800 Steel and Homogeneity of Strength (HSA800 강재의 소재특성 및 강도의 균질성에 관한 연구)

  • Kim, Jong Rak;Lee, Eun Taik;Choi, Young Han;Kim, Sang Seup
    • Journal of Korean Society of Steel Construction
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    • v.28 no.3
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    • pp.173-183
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    • 2016
  • Various material characteristics of HSA800 steel were examined and a quantitative criteria about the homogeneity of the strength was proposed. Whether HSA800 steel is satisfied the criteria for homogeneity of the strength or not was also examined. From the test results, the material characteristics of 1/4 point from the extreme fiber in the Z-direction satisfied the KS requirements. The excellent directional properties and impact resistance at low temperatures were also showed from the test results. HSA800 steel satisfied the criteria of homogeneity for the strength of the steel. However, it showed that some structures were banded together at 2/4 point from extreme fiber in the Z-direction from the microscopic tests and attention is needed to be paid in that point.

Survey Research Analysis for Enhancing the Utilization Level of Marine Meteorological Information (해상기상정보의 활용도 향상을 위한 설문조사분석)

  • Park, Jong-Kil;Jung, Woo-Sik;Kim, Eun-Byul;Choi, Su-Jin
    • Journal of Environmental Science International
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    • v.20 no.9
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    • pp.1095-1104
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    • 2011
  • A survey of professionals employed in marine related fields was conducted on subjects related to marine meteorological forecasts and special reports. The outcome of the survey indicated that the respondents were overall satisfied with the determination of the zones related to marine meteorological forecasts and special reports and with the number of forecast factors, but in regards to the questions about specific adjustment methods, it was found that the respondents perceived a need for adjustment. In addition, although there was a high consensus among the respondents that the criteria for watch and warning in the marine special reports were suitable, they voiced the opinion that it will be necessary to implement changes in the current criteria for watch and warning in order to further improve the compatibility of the criteria. The survey found that there was a high level of utilization for the marine meteorological information provided by the Korea Meteorological Administration(KMA), and that respondents mostly acquired this information via internet and TV. On the other hand, however, the satisfaction level regarding the accuracy of the marine meteorological information was low in comparison to the utilization level. The survey regarding areas for improvement in the forecasts and special reports also indicated that the need for 'improvement in the accuracy of forecasts' was cited most frequently.

The Proposal for the Execution KEC2005 (신인증기준 실시에 대한 제안)

  • Kang So-Yeon;Choi Keum-Jin;Hahm Seung-Yeon
    • Journal of Engineering Education Research
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    • v.8 no.2
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    • pp.52-63
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    • 2005
  • The purpose of this study is to make proposals for the execution of KEC2005. Many universities have taken part in the accredited engineering education programs in order to solve points at issue and to provide world-standard engineering education. Accordingly, ABEEK carried out a research on accreditation criteria that suit Korean system and made an announcement of KEC2005 in 2004. Both accredited and planning-to-be-accredited universities experience difficulty in changing KEC2000 into KEC2005. Major proposals of this study are as follows: First, ABEEK should suggest required conditions of accreditation criteria and detailed examples of them. Second, model and methodology for achievement of outcomes should be presented. Third, practical evaluation should be carried out with professors' voluntary participation. fourth, re-education of engineering education programs evaluators should be carried out. Fifth, ABEEK need to provide an aggressive request for advice and accurate information to universities to be accredited engineering education programs.

Direction of the Community Health Nursing Practice Education Focusing on the Nursing Education Accreditation Criteria (지역사회간호학 실습교육 개선 방안: 간호교육 인증평가 기준을 중심으로)

  • June, Kyung Ja;Chin, Young Ran;Kim, Hee Girl;Kim, Chun Mi;Song, Yeon Yi;Kim, Souk Young;Lee, Hanju;Jeong, Ihn Sook;Seo, Ki Soon;Choi, Kyung Won
    • Research in Community and Public Health Nursing
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    • v.27 no.2
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    • pp.183-192
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    • 2016
  • Purpose: The purpose of this study was to seek the direction of community health nursing practice education focus on the nursing education accreditation criteria. Methods: We collected data through e-mail survey to all of 202 Korean nursing baccalaureate education institute in April, 2016. The 93 professors teaching community health nursing was responded about their affiliated institute (response rate 46.0%). Results: The Korean nursing graduates in Feb. 2016 was practiced 3.01 credits, 131.6 hours in community health nursing course. Community health nursing practice agency was public health center (98.9%), Public health center post (43.0%), Public health center branch (32.3%) in order. The possibility to achieve the course objectives up to national examination was recognised Public health center (3.4), Public health center post (3.3), Public health center branch and school (3.2) from 5 score likert scale. A lot of nursing education institute have difficulty in clinical placement in community health nursing practice agency that meet eligibility of preceptor and space gaining for only nursing students. Conclusion: The nursing education accreditation criteria in 3rd cycle have to be considered real community health nursing practice situation and newly emerging community health nursing fields.

A Study of Process Model for Estimating Optimal Bidding Rate in the Lowest Bidding System (최저가낙찰제도의 적정 낙찰가율 산정을 위한 프로세스 모형 연구)

  • Ahn, TaeHyoun;Seo, HwaJin;Choi, GwangYeol;Kang, LeenSeok
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.5D
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    • pp.719-726
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    • 2011
  • The government intensifies screening criteria for the guarantee of reasonable bidding price and the prevention of low bidding price, however, the low tender rate still becomes an issue. This study analyzed the problems of screening criteria for the guarantee of reasonable bidding price, and then derived some major issues such as the restriction of decisive factors for initial construction cost, the rate of activities over five percent of surveyed price and the restrictive review criteria of inadequate activities. To solve thess problems, this study suggests an improved process model for estimating optimal bidding rate that can select a contractor with the guarantee of reasonable bidding price.