• Title, Summary, Keyword: Evaluation Standards

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Determination of Dibutyltin in Sediments Using Isotope Dilution Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry

  • Yim, Yong-Hyeon;Park, Ji-Youn;Han, Myung-Sub;Park, Mi-Kyung;Kim, Byung-Joo;Lim, Young-Ran;Hwang, Eui-Jin;So, Hun-Young
    • Bulletin of the Korean Chemical Society
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    • v.26 no.3
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    • pp.440-446
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    • 2005
  • A method is described for the determination of dibutyltin (DBT) in sediment by isotope dilution using liquid chromatography inductively-coupled plasma/mass spectrometry (LC-ICP/MS). To achieve the highest accuracy and precision, special attentions are paid in optimization and evaluation of overall processes of the analysis including extraction of analytes, characterization of the standards used for calibration and LC-ICP/MS conditions. An approach for characterization of natural abundance DBT standard has been developed by combining inductively-coupled plasma/optical emission spectrometry (ICP/OES) and LC-ICP/MS for the total Sn assay and the analysis of Sn species present as impurities, respectively. An excellent LC condition for separation of organotin species was found, which is suitable for simultaneous DBT and tributyltin (TBT) analysis as well as impurity analysis of DBT standards. Microwave extraction condition was also optimized for high efficiency while preventing species transformation. The present method determines the amount contents of DBT in sediments with expanded uncertainty of less than 5% and its result shows high degree of equivalence with reference values of an international inter-comparison and a certified reference material (CRM) within stated uncertainties.

The Study on the Investigation of the Mathematics Teaching Evaluation Standards Focused on SMK (교과 내용 지식(SMK)에 초점을 둔 수학 수업평가 기준 고찰)

  • Hwang, Hye-Jeang
    • Journal of the Korean School Mathematics Society
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    • v.13 no.1
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    • pp.45-67
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    • 2010
  • On the standards or elements of teaching evaluation, the Korea Institute of Curriculum and Evaluation(KICE) has carried out several research as follows : 1) establishment of observation elements for selecting examples of good instruction between 2001 and 2002, 2) development of the standards on teaching evaluation between 2004 and 2006, and 3) investigation on the elements of Pedagogical Content Knowledge including Subject Matter Knowledge between 2007 and 2008. The purpose of development of mathematics teaching evaluation standards through those studies were to improve not only mathematics teachers' professionalism but also their own teaching methods or strategies. Especially, the standards on mathematics teaching evaluation were developed based on the standards on general teaching evaluation. In this study, the standards were revised and modified by analyzing the results of those studies (namely, evaluation standards) focused on SMK. For this purpose, four domains such as the knowledge of curriculum reconstruction, knowledge of mathematical contents, methodological knowledge, mathematical value were new established based on the theories relevant to SMK and on the base of these four domains, standards or elements on teaching evaluation focused on SMK were reconstructed.

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A Study on the Development of the Standards on the Mathematics Teaching Evaluation (수학 수업평가 기준 개발에 관한 기초 연구)

  • Choe, Seung-Hyun;Hwang, Hye-Jeang
    • School Mathematics
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    • v.9 no.3
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    • pp.327-352
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    • 2007
  • The Korea Institute of Curriculum and Evaluation(KICE) has carried out the research on the development of the standards on teaching evaluation between 2004 and 2006, and particularly on the 'mathematics' teaching evaluation in 2006. The purpose of development of mathematics teaching evaluation standards is to improve not only mathematics teachers' professionalism but also their own teaching methods or strategies. The standards on mathematics teaching evaluation were developed based on the standards on general (not individual subject) teaching evaluation. They were revised and modified by analyzing the results of the interviews and survey with teachers about the adaptability of the standards in school. The standards were classified into four major areas of knowledge, planning, practice, and professionalism. Each area of these four were categorized into 6 smaller divisions and 36 elements. In addition, it was presented that brief descriptions on each teaching evaluation standards(element), guideline for evaluation methods, evaluator's observation index, and performance level with explanation for the standard achievement in four stages.

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A Study on Strategy of Certification Portfolio Using Social Network Analysis (사회연결망 분석을 통한 인증 포트폴리오 전략에 관한 연구)

  • Yun, Tae Young;Cho, Nam Wook
    • Journal of the Korean Society for Quality Management
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    • v.45 no.3
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    • pp.427-445
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    • 2017
  • Purpose: This paper provides a method to identify cost-effective standards by analyzing the relationships between certified company and standards. It also aims to provide a evaluation model to establish a certification portfolio strategy of institutions. Methods: By analysing the networks of certified company and certification standards, this paper developed an evaluation model of standards. The evaluation model uses an index(Certificated Standard Evaluation Index; CSEI) to assess the value of standards. Results: To verify the applicability of the evaluation model, the proposed model and the CSEL index have been applied to certification standards of Korean Standard Association. The results show that the evaluation model can effectively identify potential customers and thereby establish a certification portfolio strategy. Conclusion: The main contribution of this study is a provision of a new approach to certification portfolio strategy by evaluating the value of standards. The proposed model is expected to provide implications for the certification portfolio strategy.

A Study on the Evaluation of Uncertainty of Rockwell Hardness C Scale According to the Korean Industrial Standards(KS) (한국산업표준(KS)에 따른 로크웰 경도 시험기의 불확도 산정에 관한 연구)

  • Bahng, G.W.;Tak, Nae-Hyung
    • Journal of the Korean Society for Heat Treatment
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    • v.13 no.3
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    • pp.163-169
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    • 2000
  • Recently, uncertainty of hardeness became a major concem for the people working on the laboratory evaluation and accreditation. It is required to indicate uncertainty of hardness tester on the report after calibration. In addition to this, uncertainty of certified hardness reference block is also required to indicate on the certification sheet. Method on the evaluation of uncertainty in hardness measurement is agreed only recently for Rockwell hardness C scale. In this paper, a preliminary calculation of uncertainty based on type B evaluation has been made for hardness testers which satisfies the requirements of Korean Standards. It was found that the tolerance limit of mean value specified in KS should be increased to be compatible with the calculated uncertainty.

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Development of an evaluation tool for the quality of nursing care in neurosurgical intensive care unit patients (신경외과 중환자 간호의 질평가 도구개발)

  • Kim, Nam-Young;Jang, Keum-Seong
    • Journal of Korean Academy of Nursing Administration
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    • v.7 no.2
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    • pp.285-300
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    • 2001
  • To meet standards for high quality of care and satisfied customers, an evaluation tool about nursing care is necessary. And, We need to evaluate our practice continuously for the improvement in quality and outcomes. This study was intended to develop an evaluation tool about nursing care in NSICU, and was progressed of 3 steps; development, content validity verification and reliability verification. Data were obtained and analysed from Feb. To April, 2000. Development process of the study was as follows A preliminary list was made item by item on the basis of clinical Experience, literature review and patients' record review. Then the standards, criteria and indicators of preliminary evaluation tool were set by 5 clinical nursing panel, and their content validity was reviewed by 27 ICU nurses. Finally, an evaluation tool was developed and verified the reliability at c-university hospital located in Kwang-Ju. The results of this was as follows 1) The evaluation tool of this study developed 8 standards, 39 criterias and 106 indicators. The standards were divided into two dimensions. One was process dimension which contained 4 standards(26 criteria), The other was outcome dimension which contained 4 standards(13 criteria). 2) the Average content validity of the tool was 3.39 at standards, 3.55 at criteria and 3.51 at indicators. 3) Interrater reliability of the tool is r=.7993(p<.001) & internal consistency reliability ${\alpha}$ is .6031 4) Scores of NSICU Patients who participated in this study were 57 at total mean score, 58 at process mean score and 56 at outcome mean score The evaluation tool developed in this study seems to be useful in evaluation nursing practice appropriately for the improvement of nursing care in NSICU. I hope that this evaluation tool can be used effectively in NSICU as an intervention for the improvement of quality control.

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Development of On-line Content Evaluation Standards for Informatics Gifted Students (정보영재를 위한 온라인 콘텐츠 평가 준거 개발)

  • Kim, Yong;Kim, Jung-Hoon
    • The Journal of the Korea Contents Association
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    • v.10 no.9
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    • pp.487-495
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    • 2010
  • Online content evaluation standards were suggested in order to improve quality of education for informatics gifted students in this paper. This evaluation standards were developed by thinking and learning style and characteristics of gifted students which were presented in preceding research. The evaluation standards were reviewed through reliability analysis as well as analysis of the characteristics of items and validity analysis by experts of informatics gifted student education sector. In the result of analysis, reliability of items has been very reliable. Level of difficulty and discrimination about the characteristics of items has also shown satisfactory value. Developed the evaluation standards has 5 evaluation categories such as "talent development", "Interaction", and others. It also has 11 evaluation factors and 40 evaluation items. The online content evaluation standards can be helpful and useful in order to develop qualitative online contents and select online contents for informatics gifted student.

Development of Dementia Care Standards (치매 간호 표준 개발)

  • Ha, Ju-Young
    • Journal of Korean Academy of Nursing
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    • v.40 no.5
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    • pp.631-641
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    • 2010
  • Purpose: This study was done to develop standards for dementia care as a baseline for professional nurses to provide a framework for dementia care evaluation Methods: The dementia care standards were developed through a literature review and focus group discussions. According to the Delphi method, the data analysis was conducted using the Content Validity Index (CVI). Results: The final set of 18 standards on dementia care was developed through one round of CVI. The standards included four structural standards: 'Organization of nursing system', 'Operating system', 'Management of human resources', 'Management of material resources', 13 procedural standards: 'Advanced assessment', 'Nursing diagnosis', 'Nursing plam', 'Advanced nursing implementation', 'Evaluation', 'Education', 'Research', 'Consultation', 'Counseling and cooperation', 'Development of specialty', 'Utilizing resources', 'Nursing quality assurance', 'Ethics', and one standard concerning outcome ('Evaluation of nursing tasks in care of patients with dementia'). The final set of 55 criteria on care of patients with dementia was confirmed through two rounds of CVI. The final 171 indicators were confirmed through four rounds of CVI. Conclusion: These dementia care standards provides a framework that allows registered nurses to clarify their roles and tasks in the care of patients with dementia and provides evaluation criteria.

A Study on Standardization of Performance Evaluation for Autonomous Cleaning Robot (자율청소로봇 성능평가 표준화에 관한 연구)

  • Ryu Jae-Chang;Hong Ju-Pyo;Rhim Sung-Soo;Lee Soon-Geul;Park Kwang-Ho
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.1054-1059
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    • 2005
  • To support the expansion of the autonomous robot market, the establishment of evaluation standards of the robot performance are essential. In this paper, to venture the standardization of the performance evaluation of the autonomous robot, the authors take the autonomous cleaning robot(ACR) as the initial stepping stone. Recently, the ACR has been being developed and marketed actively in many countries including Korea and it believes to be the fore-runner among various types of autonomous robot products. Standards of the performance evaluation for the ACR could be easily modified and applied to other autonomous robots. This paper formulates and suggests a group of standards for the performance evaluation based on a evaluation platform for the ACR. The newly developed performance evaluation platform has been designed to include all the important aspects of living environments in reality. In the platform the performance of the ACR is measured in terms of mobility, cleaning performance, avoidance of obstruction(safety), and operation noise. A few commercially available ACR products are collected and tested in the evaluation platform and compared against the performance evaluation standards formulated.

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