• 한국수학교육학회지시리즈A:수학교육
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• 제54권1호
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• pp.83-98
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• 2015

By analysing the examination papers for geometry, we classified the errors occured in the proofs for geometric problems into 5 main types - logical invalidity, lack of inferential ability or knowledge, ambiguity on communication, incorrect description, and misunderstanding the question - and each types were classified into 2 or 5 subtypes. Based on the types of errors, answers of each problem was analysed in detail. The errors were classified, causes were described, and teaching plans to prevent the error were suggested case by case. To improve the students' ability to express the proof of geometric problems, followings are needed on school education. First, proof learning should be customized for each types of errors in school mathematics. Second, logical thinking process must be emphasized in the class of mathematics. Third, to prevent and correct the errors found in the proofs for geometric problems, further research on the types of such errors are needed.

• 아동학회지
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• 제28권3호
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• pp.175-185
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• 2007

This study examined types of errors made by young children on the Mathematical Ability Picture Test for Young Children(Hwang & Choi, 2007). The subjects were 30 5-year-old children. The process of taking the Mathematical Ability Picture Test was videotaped and the videotape was transcribed for analysis of errors. Findings were that in most of the sub-areas, strategy selection errors were dominant, followed by comprehension errors. Second, there was a tendency for boys and girls to make similar types of errors in every sub-area of the Mathematical Ability Picture Test for Young Children.

• 대한안전경영과학회지
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• 제9권2호
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• pp.9-17
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• 2007

There is no universally agreed classification of human error, nor is there one in prospect. Thus, a taxonomy is usually made for a specific purpose. To seek the types of human errors in the environment of man-machine interface under the railway industry, we develop a cognitive information processing model incorporating the human's mental states. Using the model, this study investigates the types of human errors about the railway workers. Thus, a survey is conducted for railway safety personnel-locomotive engineers, station employees, and train commanders- in Korean railway company. Through the survey that is designed to investigate four types of human errors from the Questionnaires composed of thirty Questions, we analyze the types of human errors related to railway safety according to affiliated offices, operation shifts, age, and working years. Finally, from the insights of the results some guidelines for the railway safety management are presented.

• Nuclear Engineering and Technology
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• 제28권6호
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• pp.563-575
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• 1996

A total of 77 cases was identified to have human errors from a total of 255 trips occurred from 1978 to 1992 in Korean NPPs. The cases were analyzed to investigate how many human errors occurred on which work conditions to find out the areas of high priority for human error reduction. For the analysis of the 77 trip cases due to human errors, classifications were made for the following four categories ; plant systems, work situation, job types, and error types. Erroneous tasks critically influencing the plant trips were carefully identified and analyzed according to the classifications. Based on the results for the individual cases, the cases were counted for the classification items in each of the four categories, then also for the group of categories to investigate the relationships among the categories in aspects of human error occurrences. As results, the plant systems, work situations, and job types, and error types that are dominant in human errors related to the trips ore identified.

• 품질경영학회지
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• 제26권1호
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• pp.99-107
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• 1998

This paper presents a software reliability model that is based on a nonhomogeneous poisson process. The major contribution of this model is combining multiple failure types with imperfect debugging by use of S-shaped mean value function. The software reliability model allows for three different types of errors: Critical errors are the most difficult to detect and the most expensive to remove. Major errors are moderately difficult to detect and fairly expensive to remove. Minor errors are easy to detect and inexpensive to remove. The model also allows for the introduction of any of these types of errors during the removal of an error. A numerical example is provided to illustrate the above techniques.

• 컴퓨터교육학회논문지
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• 제19권1호
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• pp.101-109
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• 2016

컴퓨팅 사고 교육에서 알고리즘의 설계는 학습자의 논리적 사고력과 절차적 사고력이 요구되는 중요한 학습 과정이다. 하지만 알고리즘 학습에 관한 연구와 학습자가 실제 학습에서 겪는 오류에 관한 연구가 부족한 실정이다. 이에 본 연구는 알고리즘 설계 학습에서 순서도를 활용한 프로그래밍 제어 구조 설계에서 발견된 학습자의 오류를 분석하여, 오류 유형을 제시하였다. 대학생을 대상으로 한 강의에서 세 가지 제어 구조에 관한 평가 문항을 제시한 결과, 순차 구조에서는 오류 유형이 발견되지 않았다. 하지만 조건 구조에서는 2개의 조건문이 중첩된 경우 조건 설정에서 오류가 발생하였다. 반복 구조에서는 반복의 횟수를 조절하는 조건, 반복되는 명령문의 위치, 중첩된 반복문에서 조건과 명령문의 위치 오류가 발견되었다. 본 연구에서 나타난 오류 유형은 초 중등학교와 대학에서 실시하고 있는 컴퓨팅 사고 교육의 알고리즘 설계 학습에 참고할 수 있는 사례가 될 것이다.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.459-467
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• 2011

Construction errors can have significant effects on project performance. Yet, any attempt to tackle error should be driven by the ability to understand its archetypal nature. This study aims to analyze a variety of construction errors at the execution stage, in order to develop a comprehensive set of categories that shall provide insights about the effect of different error types on the industry. We investigate a database provided by an authoritative source, which includes a number of 256 construction errors that occurred in the year 2009 in Dubai construction industry. Results from this study reveal that the most common error arose from 'poor workmanship' which accounted for 21% of the total encountered faults. The next most common types arose from the 'usage of impaired materials', followed by the 'deviation from an intended dimension'. These observations infer that the majority of construction errors are driven by workers' lack of skill or competence. Moreover, it suggests that execution-oriented errors are the major cause of faults and accidents rather than design errors.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제12권1호
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• pp.6-14
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• 2012

All types of part-of-speech (POS) tagging errors have been equally treated by existing taggers. However, the errors are not equally important, since some errors affect the performance of subsequent natural language processing seriously while others do not. This paper aims to minimize these serious errors while retaining the overall performance of POS tagging. Two gradient loss functions are proposed to reflect the different types of errors. They are designed to assign a larger cost for serious errors and a smaller cost for minor errors. Through a series of experiments, it is shown that the classifier trained with the proposed loss functions not only reduces serious errors but also achieves slightly higher accuracy than ordinary classifiers.

• 한국초등수학교육학회지
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• 제20권3호
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• pp.457-477
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• 2016

본 연구는 분수의 곱셈과 나눗셈 계산 과정에서 학생들이 보이는 오류 유형을 분석하고 진단하여, 오류를 효과적으로 교정하기 위한 오류 유형별 지도방안을 구안하는 데 그 목적이 있다. 이를 위하여 초등학교 6학년 2개의 학급을 대상으로 분수의 곱셈과 나눗셈에서 보이는 주요 오류 유형을 6가지로 분류하고 연구 대상의 오류 유형을 진단하였으며, 각 오류 유형에 맞는 교정 지도방안을 구안하여 적용하였다. 오류가 교정되었는지를 판단하기 위하여 사후평가를 2회 실시한 결과 연구 대상의 오류가 교정된 것으로 나타났다.

• East Asian mathematical journal
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• 제30권4호
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• pp.527-544
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• 2014

The purpose of this thesis is to analyze mathematical errors in descriptive problems of the Mathematics Level Assessment(MLA) which is conducted in P University. We classified mathematical errors, which are easily made in solving the descriptive problems of the MLA, into nine types as misused data, misinterpreted language, logically invalid inference, misunderstood theorem or definition, unmatched solution, technical errors, omission of solving process, ambiguous errors, and unattempted errors. With classifying the errors in nine types, we analyzed the errors of students, who are in intermediate and low level grades, by descriptive problems. On the basis of these analysis results, we suggest plans for improving the implementation of the MLA and the teaching-learning methods about College General Mathematics.