• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.870-877
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• 2006

Recently, failures of equipments are linked directly to extensive damages of human lives or financial losses from the increasing uses of train control equipments utilizing computers. Then safety activities have to progress for guaranteeing safety during the system life-cycle. In this paper, we examine the methods for risk analysis and assessment of safety activities and propose optimized one method for risk assessment. There are original risk assessment methods; risk graph and risk matrix method under the qualitative analysis, IRF(Individual Risk Formula) calculations and statistical calculations method under the quantitative analysis. Best-Practice(BP) risk analysis method is proposed for combining advantages of the qualitative and the quantitative analysis. In the comparison of risk graph and risk matrix method for safety estimation, BP method has no applications published up to now, but we can expect that this method will be utilized widely for the risk assessment due to various strong points.

• 환경영향평가
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• 제12권1호
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• pp.35-44
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• 2003

Bacterial activities of dam reservoir sediments were assessed using the methods of viable counts, ATP contents, dehydrogenase activity, and oxygen consumption. Viable heterotrophs in collected sediments were observed in the range of $10^6{\sim}10^{10}$ CFU/g dry wt. sediment. All assessed methods showed high activities in sediment samples collected from near dam site. In addition, bacteria increase in sediments amended with cellulose, starch, lipid, and protein compounds. Various ranges of antibiotics and heavy metals resistance bacteria were also detected, especially, 10~100 times less numbers of Cd resistance bacteria were observed compared with those of Pb and Cr. In general, antibiotics resistance groups were in the range of $10^{-1}{\sim}10^{-6}$ times of control.

• 한국안전학회지
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• 제29권4호
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• pp.184-190
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• 2014

Decommissioning process of nuclear facilities consist of a sequence of problem solving activities, because there may exist not only working environments contaminated by radiological exposure but also industrial hazards such as fire, explosions, toxic materials, and electrical and physical hazards. Therefore, not a few countries in the world have been trying to develop appropriate counter techniques in order to guarantee safety and efficiency of the process. In spite of that, there still exists neither domestic nor international standard. Unfortunately, however, there are few workers who experienced decommissioning operations a lot in the past. As a solution, it is quite necessary to utilize experts' opinions for risk assessment in decommissioning process. As for an individual hazard factor, risk assessment techniques are getting known to industrial workers with advance of safety technology, but the way how to integrate those results is not yet. This paper aimed to find out an appropriate technique to integrate individual risk assessment results from the viewpoint of experts. Thus, on one hand the whole risk assessment activity for decommissioning operations was modeled as a sequence of individual risk assessment steps which can be classified into two activities, decontamination and dismantling, and on the other, a risk assessment structure was introduced. The whole model was inferred with Fuzzy theory and techniques, and a numerical example was appended for comprehension.

• 디지털산업정보학회논문지
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• 제11권1호
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• pp.135-144
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• 2015

This study aims to propose an evaluation model that enables cooperative learning using e-Learning system. Even if the teacher and the student are not in the same place at the same time, the team project deliverable submitted by the student to the online system can be viewed by the teacher, enabling the teacher to assess the student not only based on the project but also in many other aspects. The proposed e-learning cooperative learning model allows the development of assessment factors, using such factors in assessment of the student's activities which are performed through the e-learning system, and the feedback of the results to the student so that the student is further motivated for learning. The teacher performs a comprehensive assessment of such factors, which is considered in conjunction with the student's assessment. Implementing the cooperative learning model proposed in this study in various e-learning systems such as Moodle is expected to motivate the student for learning, produces better cooperative learning results, provides greater convenience of assessment to the teacher, and improves fairness of assessment by showing the student's activities in real time.

• 대한인간공학회지
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• 제30권1호
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• pp.55-64
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• 2011

Objective: The aim of this paper is to introduce the activities and research trends of human reliability analysis including brief summary about contents and methods of the analysis. Background: Various approaches and methods have been suggested and used to assess human reliability in field of risk assessment of nuclear power plants. However, it has noticed that there is high uncertainty in human reliability analysis which results in a major bottleneck for risk-informed activities of nuclear power plants. Method: First and second generation methods of human reliability analysis are reviewed and a few representative methods are discussed from the risk assessment perspective. The strength and weakness of each method is also examined from the viewpoint of reliability analyst as a user. In addition, new research trends in this field are briefly summarized. Results: Human reliability analysis has become an important tool to support not only risk assessment but also system design of a centralized complex system. Conclusion: Human reliability analysis should be improved by active cooperation with researchers in field of human factors. Application: The trends of human reliability analysis explained in this paper will help researchers to find interest topics to which they could contribute.

• 영어어문교육
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• 제13권2호
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• pp.91-108
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• 2007

This study investigates learners' perception on their engagement in rating activities in the EFL essay-writing context. The current study aims to address the answers to the following research questions: 1) What attitude do students show about their participation in the rating tasks? and 2) which of three aspects (e.g. the degree of rating experience, the exposure to English composition instruction and learning, and proficiency level) significantly influences learners' rating activities? 104 EFL learners participated in the rater training session. After participants finished rater training session, they rated three sample essays and peer essays using the given scoring guide. Based on the analysis of survey responses that students made, students showed positive attitude toward their engagement in rating tasks. For research question 2, only L2 writing proficiency seriously affected students' perception on the rating tasks. Advanced level of subjects did not feel stressed by a grade of peers as low level of subjects did. They were also critical about the benefits of self- and peer-assessment, suggesting that a peer's feedback on their own essay was not so useful and that a self-rating does not fully help learners identify their writing proficiency.

• 대한수학교육학회지:수학교육학연구
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• 제14권4호
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• pp.403-419
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• 2004

모델링 활동은 학생들의 메타인지적 사고를 촉진할 수 있는 환경을 제공할 것이라는 시각에 기반을 두어 본 연구를 행하였다. 따라서 사례연구 방법으로 중학생들의 모델링 활동에서 어떤 메타인지적 사고가 나타나는지를 조사하였다 연구 결과, 학생들이 모델링 활동을 하는 동안 모델을 개발하기 위해 자신의 활동을 모니터하고 제어하는 메타인지가 자발적으로 활성화되었다. 또한 소그룹으로 모델링 활동을 하면서 자기평가와 동료평가가 활성화되었고, 이를 통해 모델을 수정하고 정교화하면서 일반화 가능한 모델을 개발하였다.

• 대한감각통합치료학회지
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• 제17권1호
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• pp.19-29
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• 2019

목적 : 본 연구의 목적은 학령기 아동을 위한 활동 참여 평가도구(Activity Participation Assessment; APA)의 타당도를 알아보는 것이다. 연구방법 : 초등학생 207명을 대상으로 APA 30문항, PACS(Pediatric Activity Card Sort) 75문항, CAPE(Children's Assessment of Participation and Enjoyment) 55문항으로 구성된 설문지를 실시하였다. APA의 구인타당도를 알아보기 위해 확인적 요인분석을 실시하였으며, 수렴타당도와 판별타당도는 평균분산추출과 상관계수 제곱값을 통해 검증하였으며, 공인타당도는 APA와 PACS 및 CAPE의 피어슨의 상관계수를 통해 검증하였다. 연구결과 : 구인타당도는 확인적 요인분석 결과 수정된 위계적 2차 모형이 적합한 수준으로 나타났으며(p<.001), 수렴타당도는 모든 하위요인에서 평균분산 추출값이 .50이상으로 나타나 입증되었으며, 판별타당도는 평균분산 추출값이 결정계수인 0.239보다 더 크게 나타나 입증되었다. 공인타당도 분석에서 APA 항목 전체와 PACS의 자기관리는 .494(p<.01), 학교/생산성 .575(p<.01), 취미/사회 활동 .647(p<.01), 스포츠 .303(p<.01)으로 모두 정적 상관이 있는 것으로 나타났다. 또한 APA 항목 전체와 CAPE의 여가활동은 .490(p<.01), 신체적 활동 .329(p<.01), 사회 활동 .571(p<.01), 기술에 기초한 활동 .401(p<.01), 자기계발 활동 .390(p<.01)으로 모두 정적 상관관계를 보였다. 결론 : APA는 구인타당도, 수렴타당도, 변별타당도와 공인타당도가 입증되어 국내 학령기 아동의 활동 참여를 측정하는 검사로써 타당한 도구로 사용될 수 있다.

• 한국의료질향상학회지
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• 제22권1호
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• pp.71-90
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• 2016

Purpose: Objective of this study was to investigate how often nurses to perform patient safety activities. Methods: 521 observations were collected in 9 hospitals by 107 nursing students. Nurses' patient safety care activities were measured 0 (not at all) to 10 (all the time) scores. Descriptive statistics, independent t-test, one way ANOVA, correlation, multiple regression used to analyse data. Results: Items like 'Initial nursing assessment', 'drug management bring on', 'preparation for radiology test', 'falls assessment', 'nursing record' got high scores. But, scores of 'patient identification', 'verbal order management', 'hand hygiene' were lower than others. Each scores were different significantly according to institutions and departments. Within a same institution, the variance of scores, especially in 'patient identification', 'hand hygiene' were great. Scores of activities were different according to characteristics of institutions like type, location, number of beds, teaching hospital, number of accreditation, JCI accreditation. Predictors influencing nurses' patient safety activities were type, location and accreditation. These predictors account for 19.4% of variance. Conclusion: Performance of nurses' patient safety activities were different significantly according to characteristics of institutions. The important items like 'patient identification', 'hand hygiene' had achieved lowest performance. Further researches are needed to improve the basic safety activities.

• 대한간호학회지
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• 제30권6호
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• pp.1411-1426
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• 2000

A nursing activity classification for hospitalized patients was performed based on an article review regarding nursing definition and nursing activity classification system. The study was conducted as follows: 1) Taxonomy was developed by the research team through the Delphi process and review article. The taxonomy consists of four nursing processes, (assessment, diagnosis, intervention and evaluation) and twelve nursing activity domains space (resperation, nutrition, elimination, exercise/alignment maintenance, comfort, hygiene, safety, spiritual support, counseling/ education, medication, communication, patient and information management). 2) First, nursing activities of the intervention process were listed and then classified by the nursing process of assessment, diagnosis, intervention and evaluation. The list consists of twelve nursing activity domains and 136 nursing activities. 3) A pilot study was conducted in two hospitals to verify validity and appropriateness of nursing activities. 4) The content validity index, which was calculated by 6 clinical practice experts, was 0.95. Also, a nursing activity classification system should also be developed in the department of community nursing and home health care nursing.