• 대한약학회:학술대회논문집
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• 대한약학회 2001년도 Proceedings of the Pharmaceutical Society of Korea
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• pp.221.1-221.1
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• 2001

• 대한약학회:학술대회논문집
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• 대한약학회 2000년도 춘계총회 및 학술대회
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• pp.202.2-202.2
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• 2000

• Bulletin of the Korean Chemical Society
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• 제26권3호
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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.

• 대한안전경영과학회지
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• 제16권4호
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• pp.71-80
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• 2014

This study is performed to determine the priorites of the evaluation factors for the improvement of fire emergency medical service by increasing it's efficiency to protect the people's lives effectively, and by recognizing it's mid-long term development. Based on the output of the analysis, the critical evaluation factors of the fire emergency medical services to be improved shall be identified, and shall be intended to use strategically for increasing the efficiency of all the activity in the EMT service, and also for providing the basic date to product and manage the good quality services. To calculate the priority of the evaluation factor for each level as shown on this study, AHP(anaysis hierarchy process) with pairwise comparison method is applied. According to the priority analysis for the evaluation factors in main category (evaluation zone), 'medical service professional aspect' is recognized as highest one, and 'service infrastructure aspect', 'service management aspect' are indicated in order. According to the priority analysis for the evaluation factors in evaluation index, 'professional personal arrangement' in the service infrastructure aspect, 'appropriateness and timeliness of emergency medical care' in the medical service professional aspect, and 'clinical training' in the service management aspect are respectively recognized as most important factors.

• 한국수소및신에너지학회논문집
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• 제34권2호
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• pp.113-121
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• 2023

Recently, low hydrogen carbon production technology is drawing interest due to lower production costs. Although the pace of research in this field has been accelerating, there is no well-established criteria for evaluation. The most of current evaluation methods needs information related to technology. However the technology is not enough to provide effective evaluation criteria because the technology is not fully developed. In this study, we propose an integrated Delphi-analytic hierarchy process (AHP) method and low carbon hydrogen production technology evaluation model. Experts opinion is used to provide evaluation criteria for the technology. In this study, integrated Delphi-AHP method are utilized for determining factors and calculating their numerical importance based on experts opinion. Then, sensitivity analysis is performed to verify the robustness of the analysis and scenarios of potential changes. As many as 11 factors are identified by Delphi method. Then, numerical importance of the factors are calculated by AHP. Sensitivity analysis is performed. It shows that intellectual property right (IPR) is always more important than other factors. This study proposes the numerical standard for the low carbon hydrogen production technology evaluation. The proposed model can be used for technology evaluation or commercialization.

• 한국지반공학회논문집
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• 제36권4호
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• pp.17-30
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• 2020

본 연구의 목적은 2017년 포항지진 시 액상화가 관측되었거나 액상화 가능성이 높은 부지 5곳에 대하여, 국내에서 통상적으로 적용해 왔던 액상화 평가 기준과 최근 개정된 평가 기준을 적용하여 액상화 평가를 실시하고, 이러한 이론적인 액상화 평가 결과와 대상 부지에서의 실제 액상화 발현여부를 비교·검토함으로써, 개정된 액상화 평가 기준의 타당성을 검토하는 데에 있다. 액상화 평가를 위한 해석지진은 기존 국내에서 통상적으로 사용해 온 지진파와 포항 실지진파를 사용하였고, 해석지진의 최대지반가속도 크기는 0.097g~0.2713g 범위의 값을 적용하였다. 해석결과로부터, 기존 국내에서 통상적으로 적용해 왔던 구조물기초설계기준(2016)에 제시된 액상화 평가 기준의 개선점을 제시하고, 2018년에 개정된 내진설계일반에 제시된 액상화평가 기준의 기존 기준대비 개정 사항의 상대적 타당성을 평가해 보았다.

• 대한인간공학회지
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• 제28권2호
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• pp.17-26
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• 2009

In this study, anthropometric analysis and usability evaluation for four-wheeled walker were carried out and then ergonomics design guidelines were proposed. In anthropometric analysis, design factors of four-wheeled walker were firstly identified and anthropometric design guidelines were made using Korean human scales. Design suitability for two typical four-wheeled walkers was analyzed in based on anthropometric design guidelines. Usability evaluation for two typical walkers was also performed through observation method and expert evaluation. Several usability problems were identified and design solutions were proposed for the design improvement of four-wheeled walker. Finally a design model of four wheeled walker considering analysis results was proposed.

• 한국의류산업학회지
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• 제10권3호
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• pp.298-306
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• 2008

The purpose of this study was to consumer's evaluation toward salesperson attributes, satisfaction of salesperson and apparel store on relationship continuity. To this end, a total of 500 questionnaires were distributed to men and women university students and 443 samples were used for the final analysis. Data were analyzed by using frequency, percentage, factor analysis, cluster analysis, One-way ANOVA, crosstabs, Pearson's correlation analysis, regression analysis. The results of this study were as follows; Looking at the effects of evaluation toward salesperson attributes, satisfaction of salesperson on relationship continuity, they showed satisfaction of salesperson had direct influence on relationship continuity extremely when men and women university students are purchasing their clothing. Uniformity, customer orientation, expertise, kindness were as follows. Looking at the effects of evaluation toward salesperson attributes, satisfaction of apparel store on relationship continuity, it showed uniformity has direct influence on maintaining relations extremely when men and women university students are purchasing their clothing. Customer orientation, satisfaction of apparel store, expertise, kindness were as follows. Through this study, it will be applied into program development data for consumer management and education, and salesperson's efficient consumer response as well.

• 한국안전학회지
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• 제31권5호
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• pp.61-66
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• 2016

Many cut slopes are located along national roads, there were the collapse of cut slopes. In this study, the weights for condition evaluation of rock slopes was calculated using the entropy method and analytic hierachy process(AHP) method. The entropy analysis was performed using 95 cut slope data, and the AHP analysis was performed by a questionnaire to several expert. The weights based on analysis results were compared with evaluation weights of existing standard. As a result of this study, there was the difference of weights among the analytical methods. Later on, if this study's results is used to improvement current evaluation weights, it will be possible to perform the reliable condition evaluation.

• 영어어문교육
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• 제13권4호
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• pp.233-252
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• 2007

The aim of this study is to propose a systematic way of evaluating competing ELT textbook series. Three stages of evaluation procedures were employed: A sample of two sets of English textbook series for young learners were first analysed by five trained textbook evaluators using a checklist. Second, based on the results of analysis, evaluative discussion was carried out. Third, two independent evaluators conducted impressionistic evaluation on the series. The procedure employed in this materials evaluation process can be adapted in choosing series of textbooks. Since not many studies have dealt the evaluation of textbook series by multiple evaluators, the method presented in this study can be referred to and applied by materials evaluators in other contexts.