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유현종 ( Hyun Jong Yu ),고호경 ( Ho Kyoung Ko ) 경북대학교 과학교육연구소 2013 科學敎育硏究誌 Vol.37 No.2
본 연구는 수학 교과서 선정에 관한 교사의 인식을 조사하고 이를 바탕으로 합리적인 교과서 선정과정 및 기준안 구성에 시사점을 제공하는데 그 목적이 있다. 이를 위하여 실제 교과서 선정 과정 및 선정을 위한 내적, 외적기준에 관한 조사를 실시한 결과 ‘교육과학기술부(교육청)에서 배부한 표준 선정 기준’을 가장 많이 활용하였으며 이 중 ‘학습내용조직’과 ‘학습평가’를 가장 중요한 요소로 여기는 것으로 나타났다. 선정 방식은 ‘기준에 맞추어 개인별로 점수 매긴 후 총점 합산하여 선정’한다는 응답이 가장 높게 나타났다. 실제 선정 시 가장 많이 고려한 내적 기준으로는 ‘학습 분량과 난이도의 적절성’, 외적 기준으로는 ‘인지도’로 나타났으며 선정과정에서의 애로사항은 ‘검토할 시간의 부족’이라하였다. 이러한 결과들을 바탕으로 교과서 선정 과정과 선정 기준안에서 개선되어야 할 시사점을 도출하였다. The purpose of the research is to examine the teachers` cognition about the math textbook selecting and to provide the implications about the rational process of the textbook selection and criteria based on the research. In terms of the research result about the inner and outer criteria of the actual process of the textbook selecting, they utilized the standard selection criteria distributed by Office of Education, and they considered ‘Organization of learning contents’ and ‘Learning evaluation’ as the most important factors. The selection method was that the answer ‘After scoring the grade with matching standards, selecting by adding the total score’ was the highest. In case of the actual selection, the most considerable inner criteria appeared ‘Learning quantity and propriety of the difficulty level’. The outer criteria showed ‘Awareness’, and the difficulty in the selection process was ‘in sufficient time for reviewing’. Based on this research result, we draw the implication that needs to be improved in the process of the textbook selection and the criteria.
홍성호(Sung Ho Hong),이상현(Sang hyun Lee),박상태(Sang Tae Park),유현종(Hyun Jong Yu),전웅재(Woong Jae Jeon) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4
This study presents on the analysis fire hazards of drum type electric washing machine. In order to analyze fire hazards fire experiment is conducted. The fire experiment is conducted to simulate under the normal condition and abnormal condition. The experiment under the abnormal condition is simulated in safety device failure, situation of accumulated dust and tracking phenomenon caused by humidity. The results show that fire hazard is high at the abnormal condition. In this paper, we suggest to use the safety device of low operating temperature in electric washing machine for reducing fire hazard.
최형일,정경훈,유현종 조선대학교 환경공해연구소 1999 環境公害硏究 Vol.15 No.2
This research conducted an analysis of instantaneous sound pressure levels by means of classifying 246 processes at 41 workplaces in 11 kinds of industries. This research aims reveal how much noise level of each enterprise are exposed to the environment. This study investigated the distribution of noise induced hearing loss and the instantaneous sound pressure level in the audible frequency band. It also investigated the exposure intensity and characteristic of noise frequency according to the classification of industries. A frequency analysis was conducted on the processes which exceeded 85 dB(A). In addition, it was analyzed that the result of special health checkups and survey the laborers knowledge about noise according to their general characteristics. The rate of wearing protectors was also survey and the following findings were obtained : 1. Among the 246 processes of survey objects, the processes which exceeded 90dB(A), which is the maximum permissible standard for noise exposure designated by the ministry of labor were, 55 places, which corresponded to 22.4%. 2. When the analysis on frequency characteristics of 120 processes which exceeded 85 dB(A) in surveyed industries was conducted, the processes at 20 places, 16.7% showed the highest sound pressure level in the high frequency band which represented higher than 2 kHz. 3. The laborers having opinions that they had noise induced hearing loss were 85, which was 10.6% of 802 laborers who were the survey objects. 4. As for the rate of noise induced hearing according to age and years of service of laborers, the rate of noise induced hearing loss appeared higher as their ages increased and their years of service increased. 5. As for the tendency of recognizing their working environment, 80% of the subjects stated that their working sites were noisy, 51.2% stated that they easily felt tired.