• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1997년도 춘계학술대회논문집
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• pp.56-60
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• 1997

The study of human erroneous actions has traditionally taken place along two different lines of approach. One has been concerned with finding and explaining the causes of erroneous actions, such as studies in the psychology of "error". The other has been concerned with the qualitative and quantitative prediction of possible erroneous actions, exemplified by the field of human reliability analysis (HRA). Another distinction is also that the former approach has been dominated by an academic point of view, hence emphasising theories, models, and experiments, while the latter has been of a more pragmatic nature, hence putting greater emphasis on data and methods. We have been developing a method to make predictions about error modes. The input to the method is a detailed task description of a set of scenarios for an experiment. This description is then analysed to characterise thd nature of the individual task steps, as well as the conditions under which they must be carried out. The task steps are expressed in terms of a predefined set of cognitive activity types. Following that each task step is examined in terms of a systematic classification of possible error modes and the likely error modes are identified. This effectively constitutes a qualitative analysis of the possibilities for erroneous action in a given task. In order to evaluate the accuracy of the predictions, the data from a large scale experiment were analysed. The experiment used the full-scale nuclear power plant simulator in the Halden Man-Machine Systems Laboratory (HAMMLAB) and used six crews of systematic performance observations by experts using a pre-defined task description, as well as audio and video recordings. The purpose of the analysis was to determine how well the predictions matiched the actually observed performance failures. The results indicated a very acceptable rate of accuracy. The emphasis in this experiment has been to develop a practical method for qualitative performance prediction, i.e., a method that did not require too many resources or specialised human factors knowledge. If such methods are to become practical tools, it is important that they are valid, reliable, and robust.

• 한국과학교육학회지
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• 제21권2호
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• pp.255-263
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• 2001

중학교 '전기와 자기' 에 대한 개방적 탐구 과제는 관찰을 통한 서술적인 결과 처리가 특징인 정성적 과제와, 변인통제를 통한 정량적 결과 처리가 특징인 정량적 과제로 나눌 수 있다. 본 연구의 목적은 두 종류의 과제에 대한 중학교 2학년 학생들의 탐구 수행 특징을 탐구 과정을 중심으로 분석하는 것이다. 학생이 작성한 '탐구 보고서' 및 '탐구 활동 평가서' 그리고 연구자의 관찰 및 면담 자료를 분석하였다. 정성적인 과제에 대한 탐구에서는 자신의 생각과 다른 뜻밖의 관찰을 인지하고 처리하는 것이 어려운 점이었고, 정량적인 과제에 대한 탐구에서는 여러 개의 변인을 다루고, 신뢰롭고 타당한 측정을 하며, 정량적으로 결과를 처리하는 것이 어려운 점이었다. 정성적인 과제에 대한 탐구에서는 자신이 제시한 탐구 방법 및 결과의 부족한 점을 인지하고 있었는데 반해, 정량적인 과제에 대한 탐구에서는 부족한 점을 거의 인지하지 못했다. 이러한 결과는 기존의 실험실습과는 다른 개방적인 탐구를 지도할 때, 정성적인 과제의 경우 뜻밖의 관찰 결과를 신뢰롭고 타당하게 처리하도록 지도하는 것이 중요하며, 정량적인 과제의 경우 여러 개의 변인을 다루는 방법 및 신뢰롭고 타당한 측정 방법을 지도하는 것이 중요하다는 것을 시사한다.

• 대한물리의학회지
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• 제6권1호
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• pp.9-17
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• 2011

Purpose : The purpose of this study was to compare the effects of performing feedback vs repeative tasks on lower extremity motor function and falls efficacy in chronic hemiplegic patients. Methods : 40 hemiplegic patients took part in this study. The average age of the feedback-task group was 68.45 years and 68.20 in the repeative-task group. All subjects participated in the study for 8 weeks, doing exercises 3 per day per week. All participants were assessed by using the Berg balance scale (BBS), the lower-extremity subscale of the Fugel-Meyer assessment of sensorimotor impairment (FMLE), and the falls efficacy scale (FES). The data were analyzed using a paired t-test. Results : After 8 weeks of exercise training, the results of this study were: the BBS and FMLE of hemiplegic patients showed a feedback-task and repeative-task groups (p<0.05). The FES of hemiplegic patients also showed a significant difference between the quantitative-task and qualitative-task groups (p<0.05). Conclusion : We present findings suggesting that chronic hemiplegic patients could improve their standing balance ability better through a feedback-task exercise program, as opposed to a repeative-task exercise program.

• 대한수학교육학회지:학교수학
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• 제18권4호
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• pp.819-838
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• 2016

본 연구는 비와 비율에 대한 기본적인 내용을 배운 5학년 학생들과 비례와 비례식 및 형식적인 전략까지 배운 6학년 학생들의 비례추론 능력을 비교 분석하고, 초등학교의 비례 추론 지도를 위한 시사점을 제공하고자 하였다. 이를 위해 5학년 131명과 6학년 138명 학생들을 대상으로 다양한 과제로 구성된 비례 추론 검사를 실시하여 성취도와 전략을 분석하고, 일부 면담을 실시하였다. 분석 결과 5학년과 6학년 학생들의 평균은 다소 차이는 있었으나 크지 않았고, 과제 유형별로는 5, 6학년 모두 기하 과제보다는 대수 과제, 질적 과제보다는 양적 과제, 비교 과제보다는 미지값 과제에서 높은 점수를 보였으며, 5, 6학년 모두 형식적 전략보다는 인수 전략과 단위 비율 전략 같은 비형식적 전략을 훨씬 더 많이 사용하였고, 비례 상황과 비 비례 상황을 구분하는 데는 여전히 어려움이 있었다. 이런 결과를 바탕으로 학생들의 비례 추론 지도를 위한 시사점으로 다양한 비례 추론 과제의 도입과 학생들의 유연한 전략의 중시를 제안하였다.

• 정보교육학회논문지
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• 제23권4호
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• pp.315-327
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• 2019

본 연구의 목적은 플립드 러닝 기반 소프트웨어 교육이 초등학생의 흥미도와 컴퓨팅 사고력에 미치는 영향 요인을 찾아 효과적인 교수학습 전략을 제안하는 것이다. 이를 위해 초등학교 학생들을 대상으로 플립드 러닝 기반 소프트웨어 교육프로그램을 개발하여 수업에 적용하고, 학습과정에서 발생한 산출물과 관찰 및 인터뷰 자료를 바탕으로 질적 연구를 수행하였다. 연구 결과, 초등학생의 플립드 러닝 기반 소프트웨어 교육에서 흥미도에 영향을 미치는 요인은 '수업에 대한 기대', '실제적 과제', '과제에 대한 성취', '동료와의 상호작용'으로 나타났다. 컴퓨팅 사고력을 높이는 요인으로는 주어진 수업시간 안에서의 '과제 완료로 인한 성취감', '유의미한 동료와의 상호작용', '교사의 핵심적인 피드백'으로 나타났다. 이러한 요인을 바탕으로 소프트웨어 교육에서 흥미를 높이고 컴퓨팅 사고력을 증진시키기 위하여 수업단계별로 적용할 수 있는 교수학습 전략을 제안하였다.

• 영어어문교육
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• 제12권4호
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• pp.253-276
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• 2006

The purpose of this study is to compare and analyze the aspects of task-based materials in high school English textbooks for first year students in Korea. Based on the theoretical backgrounds for designing communicative tasks and the basic contents of the 7th national curriculum for English, a total of six different qualitative evaluation categories of task-based materials are constructed. The six categories include input data, settings, activity types, language skills, activity themes, and communicative functions. The results of the data analysis showed that the regulations of the 7th national English curriculum, which were aimed at improving the students' communicative abilities, were properly reflected in the materials of task-based activities of all textbooks. On the other hand, a few problems were found in some textbooks: too many individual tasks; being out of proportion in presenting task types and themes; non-systematic introduction of language skills, etc. To conclude, a few suggestions are made to provide some meaningful considerations for the text material developers in order to produce better textbooks in the future: task goals and rationale that encourage the learner's positive motivation; authenticity of input data based on the real-world context; a collaborative learning environment that enhances communicative interaction; a proportional representation of the various activity types including creative problem-solving procedures; systematic introduction of integrated language skills, etc.

• 한국초등수학교육학회지
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• 제19권4호
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• pp.457-484
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• 2015

본 연구에서는 초등학생들이 다양한 비례 추론 과제를 해결할 때 사용하는 비례 추론 전략과 정답률을 분석하여 비례 추론 능력 지도를 위한 시사점을 제공하고자 하였다. 이를 위해 비례식을 학습한 6학년 173명을 대상으로 조사 연구를 실시하였다. 비례 추론 과제는 대수 기하, 양적 질적 추론, 미지값 비교 과제로 구분하고, 선행 연구에서 사용된 비례 추론 문항을 참조하여 다양한 과제 유형을 고려한 문항으로 검사지를 구성하였다. 과제 유형별로 정답률을 살펴보면, 기하 과제보다는 대수 과제, 질적 추론 과제보다는 양적 추론 과제, 비교 과제보다는 미지값 과제의 정답률이 상대적으로 높게 나타났다. 학생들이 사용한 비례 추론 전략을 살펴보면 비례식을 학습하였음에도 불구하고 형식적 전략보다는 인수 전략, 단위 비율 전략과 같은 비형식적 전략을 사용하는 비율이 상대적으로 높게 나타났다. 이와 같은 결과를 바탕으로 비례 추론 능력 지도를 위한 시사점으로 형식적 전략의 약화와 비형식적 전략의 명시적 지도, 질적 추론의 강화 및 질적 양적 추론의 결합, 다양한 과제 유형의 균형있는 취급 등을 제안하였다.

• 아동학회지
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• 제18권2호
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• pp.57-71
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• 1997

This study discusses the nature of data-interpretation process in the perspective of modern hermeneutics and explores its methodological implications for qualitative research on the life of children. Discussions center around the basic concepts of modern hermeneutics, such as the conceptual distinctions between understanding and explanation, the intersubjective reality constituted between the child's horizon and the researcher's, the concept of the hermeneutics circle and the importance of the openness of language in understanding children's lifeworld. The conclusions are made as follows: First, the concept of "understanding", which is the basic concern of qualitative research on children, has a much different meaning from that of "explanation" in quantitative research. The task of understanding lies in interpreting the lived meaning in context as experienced by children in all its complexity. Second the researcher's subjectivity in the interpretation process has a dual function in that it can produce a faulty hermeneutics circle and yet it provides the researcher with the strong momentum to open up her understanding towards a deeper and wider level. Third, the reliability and the validity of qualitative research should be discussed within the interpretation process itself in that interpretation in qualitative research is guided basically by the researcher's internal dialectic: between data (text) and her subjectivity. Lastly, the language in interpretive research should be open and free in terms of style in order to present a fuller and richer description of children's lifeworld and the delicate textures of their lived meanings.

• 한국안전학회지
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• 제18권2호
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• pp.104-118
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• 2003

It has been criticized that conventional human reliability analysis (HRA) methodologies for probabilistic safety assessment (PSA) have been focused on the quantification of human error probability (HEP) without detailed analysis of human cognitive processes such as situation assessment or decision-making which are crticial to successful response to emergency situations. This paper introduces a new human reliability analysis (HRA) methodology, AGAPE-ET (A guidance And Procedure for Human Error Analysis for Emergency Tasks), focused on the qualitative error analysis of emergency tasks from the viewpoint of the performance of human cognitive function. The AGAPE-ET method is based on the simplified cognitive model and a taxonomy of influencing factors. By each cognitive function, error causes or error-likely situations have been identified considering the characteristics of the performance of each cognitive function and influencing mechanism of PIFs on the cognitive function. Then, overall human error analysis process is designed considering the cognitive demand of the required task. The application to an emergency task shows that the proposed method is useful to identify task vulnerabilities associated with the performance of emergency tasks.

• 대한통합의학회지
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• 제8권4호
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• pp.107-115
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• 2020

Purpose: This study aims to systematically review the dual-task evaluation applied to the screening of mild cognitive impairment. It also aims to present various evaluation items and results analysis methods for dual tasks applied to patients with mild cognitive impairment. Methods: We conducted a systematic search of published studies in PubMed databases and KISS from January 2000 to August 2020 using the main keywords such as "Dual task," "Mild Cognitive impairment," "Elderly," and "Screening." We selected a total of 10 studies for the analysis from 1314 searched articles. Results: We analyzed the qualitative level of 10 studies that were nonrandomized two-group studies with evidence level II (100.0%). These results suggest that the evidence level of the studies was high. We analyzed 10 studies and identified 12 motor tasks and 19 cognitive tasks. Walking was the most commonly used evaluation motor task and counting backward by ones and naming animals were the most commonly used evaluation cognitive tasks. Moreover, the velocity speed was the most used result analysis method. The results indicate that there were significant differences in dual-task performance between patients with normal and mild cognitive impairment. Conclusion: The results of this study can be used as a basis for the selection of dual-task evaluation items and methods of analyzing the results for screening mild cognitive impairment. Furthermore, they are expected to be used for research on the development of dual-task evaluation tools. It is necessary to compare and analyze the usage trends of dual-task evaluation by cultural differences in future studies.