• 한국초등수학교육학회지
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• 제14권2호
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• pp.355-376
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• 2010

본 연구는 초등학교 1학년 수학의 수와 연산 영역에서 학생들이 보인 주된 오류 유형을 찾아 분석하고, 오류에 따른 효과적인 지도방법을 알아보았다. 1학년 1개반 학생들에게 교과서수준의 20문항씩 2번 나눠서 실시하여 20%이상의 오류문항을 선별하여 해당학생과 개별 면담과 관찰을 통한 분석하였다. 오류를 많이 보인 내용은 수 영역에서 50개 이상의 수 세기에서 수를 잘못 세는 오류가 50%이상 발생하였고, 연산 영역에서 대부분의 뺄셈에서 발생하였다. 여기서 발생된 오류를 4가지 유형에 따라 분류한 결과, 부정확한 개념과 정의에 대한 오류가 가장 많았다. 이에 따라 초등학교 1학년 학생들은 수와 연산에 대한 기초적인 개념, 정의, 사실, 기능 등을 확실하게 정립할 수 있는 방안의 모색이 필요하였다. 또 오류의 교정방안으로 개별 면담과 구체물을 이용하여 다양한 놀이를 통하여 흥미를 유발하고 적극적인 참여를 유도할 때 오류교정에 효과가 있음을 알 수 있었다.

• 말소리와 음성과학
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• 제13권1호
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• pp.25-36
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• 2021

This study examined the perception and production of eight English fricatives /f/, /v/, /θ/, /ð/, /s/, /z/, /ʃ/, and /ʒ/ by thirty Chinese English majors and thirty Chinese middle school students through a fricative identification test, an intelligibility test, and a goodness rating test and focused on error patterns and the perception-production relationship. The results showed that substitution errors occurred frequently in the perception and production of English fricatives by both the English majors and the middle school students. Further, the error patterns were attributed to various influencing factors such as the negative transfer from Chinese consonant inventory, hypercorrection or overcompensation mistakes, deficiency of L2 teaching, and acoustic similarities. Significant overall correlations were found between the fricative perception and production by the two subject groups but were not manifested in all the eight fricatives, indicating that Chinese learners' perceptual competence of target fricatives was not necessarily tied to their productive excellence of those sounds in all cases. Furthermore, precedences of perception over production were incompletely manifested in the eight fricatives, which suggested that perception might not always be a necessary prerequisite for production. Additionally, subject group and vowel context differences were observed. The English majors performed better than the middle school students, both perceptually and productively, and the subjects' performances in perception and production varied when vowel contexts changed.

• 조명전기설비학회논문지
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• 제21권9호
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• pp.81-86
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• 2007

Electric utility companies have the responsibility of providing good electricity for their customers. They have introduced the DAS(Distribution Automation System) to automate the power distribution networks. DAS engineers require state-of-the-art applications, such as a way to actively manage the distribution system and gain economic benefits from a flexible DAS architectural design. The existing DAS is not capable of handling these needs. It requires operator intervention whenever feeder overloading is detected while operator error could cause the feeder overload area to be extended. It also utilizes a closed architecture and it is therefore difficult to meet the system migration and future enhancement requirements. This paper represents a web based, platform-independent, flexible DAS architectural design and active database application. Recent advanced Internet technologies are fully utilized in this new DAS architecture allowing it to meet the system migration and future enhancement requirements. By using an active database, the DAS can minimize the feeder overloading area in the distribution system without operator intervention, thereby minimizing mistakes due to operator error.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.2048-2051
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• 2010

Almost all companies have paid much attention to the safety management ranging from maintenance to operation even at the stage of designing in order to prevent accidents, but fatal accidents continue to increase throughout the world. In particular, it is essential to systematically prevent such fatal accidents as fire, explosion or leakage of toxic gas at factories in order to not only protect the workers and neighbors but also prevent economic losses and environmental pollution. In addition, HRA may be used to detect the human errors which may cause accidents or trace back to any mistake on the part of workers. Usually, HRA technique is used in association with other risk assessment techniques. Moreover, it can serve to enumerate the human errors which may occur during operation or down-time or correct the existing system to reduce the mistakes. This work focuses on the coincidence of human error and mechanical failure for management of human error, and on some important performance shaping factors to propose a method for improving safety effectively of the process industries.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1995년도 추계학술대회 학술발표 논문집
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• pp.145-152
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• 1995

This paper presents a novel SOFLIC(self organizing fuzzy logic intelligent controller) for reactor rod control system in nuclear power plant. The output of fuzzy controller is gener ated by using two signal : the error between reference and average temperature, and the error between reference and neutron flux-converted temperatures. Flexibility of the controller is enhanced by using self-organizing feature and the controller respond to variation of system parameter with more precision. performances of the SOFLIC and PID are simulated with the model developed for a nuclear power plant. The SOFLIC is superior to PID : SOFLIC provides more rapid load following capability. more robustiness for variation in process dynamics and minimization of engineer's mistakes in controller design.

• 한국문헌정보학회지
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• 제36권4호
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• pp.5-19
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• 2002

KERIS의 대학도서관 종합목록은 330개 대학도서관이 가입하여 570만 레코드를 보유하고 있는 국내 최대의 목록이다. 그러나 각 회원기관이 이미 구축한 DB를 짧은 기간 내 통합하면서 중복 및 오류 레코드가 많이 포함되어 있기 때문에 검색의 효율성이 떨어진다는 지적이 있다. 따라서 본 연구에서는 전체 자료의 10%를 차지하는 학위논문 데이터 1000건을 대상으로 오류 데이터의 유형을 분석함으로서 데이터의 품질을 측정하고 기계적으로 오류데이터를 색출할 수 있는 방안을 제시하였다. 분석 결과 오류데이터는 전체 표본 DB의 30%를 차지하였고 발생하는 주요 원인은 1)입력오류 2)MARC의 사용 오류 3)목록규칙의 적용 오류가 가장 큰 원인으로 나타났다.

• Journal of Species Research
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• 제9권3호
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• pp.218-220
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• 2020

A holotype is an element to which the name of a taxon is permanently attached and is key material that facilitates taxonomic research. However, type citation or designation errors due to typographical errors or inadvertent mistakes often exist. When reviewing recently published literature for the type specimens of vascular plants in the herbarium of the National Institute of Biological Resources, we observed that three species, Isoetes laosiensis, Isoetes coreana, and Huperzia jejuensis, had errors, and the actual holotype information and the type descriptions of the protologues did not match. The name Isoetes laosiensis had a collecting number error, while Isoetes coreana and Huperzia jejuensis had collector errors. According to Article 9.2 of the International Code of Nomenclature for algae, fungi, and plants (Shenzhen code), if a holotype designation in the protologue of the name of a taxon is found to contain errors such as collector, collecting number, and illustration errors, the errors are to be corrected. We, therefore, corrected the errors in holotypes of three species, with no alterations made to the intents of the original authors.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제24권3호
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• pp.709-730
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• 2010

본 연구에서 함수를 어려워하는 원인이 함수의 가역성에 기인하는지 살펴보고자 가역적 사고가 요구되는 무리함수의 개념과 가역성을 분석하였다. 함수와 관련하여 저학년에서 형성된 개념이 불균형 상태로 고착화되어 있다. 하위권 학생들의 시각화, 기호 이해, 특히 가역적 사고 능력이 부족하여 오류 현상을 보이고 있다. 저학년부터 생활 주변의 가역적인 사고를 요하는 내용을 다루지만, 학생들은 가역성이 내포된 함수 내용을 어려운 대상으로만 간주하고 인지 구조의 조절 과정을 의도적으로 회피하거나, 인출하여도 연결성이 부족하고 부정확한 개념으로 응답하고, 특히 가역성이 내포된 문제에 대하여 반응율과 정답율이 낮으며 다양한 오류 현상이 나타났다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권10호
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• pp.2448-2463
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• 2013

The traditional block-based motion compensation methods in frame rate up-conversion (FRUC) only use a single uniquely motion vector field. However, there will always be some mistakes in the motion vector field whether the advanced motion estimation (ME) and motion vector analysis (MA) algorithms are performed or not. Once the motion vector field has many mistakes, the quality of the interpolated frame is severely affected. In order to solve the problem, this paper proposes a novel joint overlapped block motion compensation method (8J-OBMC) which adopts motion vectors of the interpolated block and its 8-neighbor blocks to jointly interpolate the target block. Since the smoothness of motion filed makes the motion vectors of 8-neighbor blocks around the interpolated block quite close to the true motion vector of the interpolated block, the proposed compensation algorithm has the better fault-tolerant capability than traditional ones. Besides, the annoying blocking artifacts can also be effectively suppressed by using overlapped blocks. Experimental results show that the proposed method is not only robust to motion vectors estimated wrongly, but also can to reduce blocking artifacts in comparison with existing popular compensation methods.

• Journal of Information Processing Systems
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• 제2권3호
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• pp.137-142
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• 2006

A large portion of the embedded system development process involves the integration of hardware and software. Unfortunately, communication across the hardware/software boundary is tedious and error-prone to create. This paper presents an automatic hardware/software interface generation system. As the front-end of hardware/software co-design frameworks, a system designer defines XML specifications for hardware functions. Our system generates hardware/software interfaces including Device Driver, Driver API, and Device Controller from these specifications. Embedded software designers can easily use hardware just like system libraries. Our system reduces the mistakes and errors that can be occurred when a software programmer directly connects software to hardware, and supports balancing labors between hardware developers and software programmers. Moreover, this system can be used as the back-end for a hardware/software co-design framework.