http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김해동(Kim, Haedong) 한국외국어교육학회 2009 Foreign languages education Vol.16 No.3
The aim of this study is to describe the responses from those who took part in an ELT materials development course for their pre-service or in-service teacher training in Korea. Nineteen pre-service teacher-trainees at a teacher's college were asked to write one lesson of secondary English textbook. Also thirteen MA and PhD students in a TESOL department developed an English test preparation textbook. The overall results from a questionnaire and interviews indicate that they realized materials design was a difficult process which required theoretical understanding of ELT materials design principles. Pre-service teachers reported that they had difficulty in constructing the overall organization of one lesson. Graduate students stressed that materials developers should be well aware of target students' interest. Both groups pointed out that developing ELT materials was much more difficult than they thought, but the rewards were worth it. It could be suggested that materials design practice should be included in teacher training programs to prepare trainees to select, adapt, and develop appropriate materials.
김해동(Kim Haedong) 한국외국어교육학회 2005 Foreign languages education Vol.12 No.3
The aim of the present study is to analyze the learners' responses to different types of open and closed tasks in ELT materials. A total of 38 students in an English class at a university in Korea participated in the study. A questionnaire survey was employed to collect their opinions of interest, usefulness and difficulty in the task-materials used in the classroom Their behaviors during the use of task-materials were recorded throughout a video and analysed by independent observers. The learner interviews were held for the purpose of interpreting the questionnaire data. Results from the analysis of the learners' responses are as follows: First. the learners answered that the type of open task was more interesting and useful than the type of closed task. A repeated measure ANOVA revealed that the effect of task type on the learners' self-reported interest was greater than the effect of topic types. Second, the learners' behaviors were positive during the use of open taskmaterials. In conclusion, it might be effective for classroom teachers to use more open task-materials when they intend to generate learners' interest and positive behaviors during the use of materials within the context of university English classroom in Korea.
사용자 행위 모델과 이상치 탐지 알고리즘을 활용한 내부자 이상행위 탐지
김해동(Haedong Kim),김준홍(Junhong Kim),박민식(Minsik Park),조수현(Suhyoun Cho),강필성(Pilsung Kang) 대한산업공학회 2017 대한산업공학회지 Vol.43 No.4
In this paper, we propose insider threat detection methods based on user behavior modeling and novelty detection algorithms. Although traditional insider treat detection methods focus on the rule-based approaches built by domain knowledge of experts, it turns out that they are neither flexible nor robust. Recently, machine learning-based approaches have been highlighted as an alternative to rule-based approaches because data driven detection system can be more applicable to actual systems. To do so, we first design the user behavior model that transforms log records of user activities, inappropriate for machine learning algorithms, into numerical vectors to encode user behaviors to instances. Then we apply variable selection methods and novelty detection algorithms to efficiently detect the rare insider treats or malicious (suspicious) activities. Experimental results support that the proposed framework can work well for severally imbalanced data sets in which there are only a few insider threats although no domain experts’ knowledge is provided.
Augmented Reality에서 GPS와 모델기반 비전 처리를 이용한 향상된 가상 이미지 정합방법
김해동(Haedong Kim),김주완(Juwan Kim),장병태(Byungtae Jang),김동현(Donghyun Kim) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅱ
가상현실(Virtual Reality)에서는 가상 환경과 필요한 정보가 모두 가상이므로, 가상 정보만을 보는 사용자에게 일치된 정보를 제공하기가 용이하다. 그러나 이 분야와 유사한 AR(Augmented Reality)에서는 실제 환경과 관련 정보를 결합하여 보고 있으므로, 임의대로 변경이 불가능한 실제 환경에 관련된 가상 정보를 얼마나 정확히 일치하여 나타낼 수 있는가 하는 가상 이미지 정합이 큰 이슈(jssue)가 된다. AR에서 이미지 정합은 실세계 환경을 정확히 가상환경으로 옮기는 과정에서 나오는 오차를 줄이는 것으로 이루어 진다. 본 논문에서는 DGPS(Differential GPS)와 모델기반 비전 처리를 이용하여 향상된 AR 정합 방법을 제시하고자 한다.
김용 ( Kim Yong ),김해동 ( Kim Haedong ) 한국중등영어교육학회 2017 중등영어교육 Vol.10 No.4
This study aims to examine English language learning and teaching anxiety among secondary school pre-service English teachers. It also investigates the relationship between the pre-service teachers' anxiety and their personal variables such as English teaching experience, the period of experiencing in English-speaking countries and self-evaluated English proficiency. A total of 157 secondary school pre-service teachers who were Korean majoring in English education at a university in South Korea participated in this study. The FLCAS (Foreign language classroom anxiety scale), FLTAS (Foreign language teaching anxiety scale) and an open-end questionnaire were employed to collect the data. The results of the analysis revealed that the correlation between learning of English language and teaching anxiety were computed as r = .70, indicating a high level of relationship. The pre-service teachers' English language learning and teaching anxiety were found to have negative correlation with their English teaching experience, experience in English-speaking country and self-evaluated English proficiency. Based on the findings, it is proposed that in order to alleviate the anxiety, English teaching strategies and communication strategies should be trained for the Korean pre-service secondary school English teachers.