• 대한공업교육학회지
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• 제36권2호
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• pp.273-292
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• 2011

본 연구는 전문계 고등학교에서 프로젝트 학습을 실시하였을 때, 프로젝트 학습에 대한 학습자와 교수자간의 인식차이와 계열별 학습자들 간의 인식 차이가 있는지를 확인해 보고자 하는데 있다. 이를 위해, 프로젝트 학습은 모듈수업 가운데 교수 학습기본 모형을 적용하여 수업을 실시하였고, 집단유형(학습자, 교수자)과 계열유형별(농업, 공업, 상업)로 프로젝트 학습을 통한 학습결과에의 도움 여부, 프로젝트 학습 수행에의 만족도, 프로젝트 학습의 적용가능 교과, 향후 프로젝트 학습의 적용 선호여부에 관한 4개 항목 대한 인식차이를 살펴보았다. 연구결과, 전문계 고등학교 학습자들이 프로젝트 학습에 참여한 이유는 자발적인 경우(21.0%)보다는 교수자들의 권유 때문인 것으로 나타났다(58.0%). 또한, 집단(학습자, 교수자)과 계열(농업, 공업, 상업)간 상호작용효과는 프로젝트 학습 수행에의 만족도, 프로젝트 학습의 적용가능 교과, 향후 프로젝트 학습의 적용 선호여부항목에 있어서는 각각 상호작용 효과가 있는 것으로 나타났다. 전문계 고등학교에서의 성공적인 프로젝트 학습 수행을 위해서는 학습자들의 적극적인 참여를 유도하고 교수자와 학습자용 프로젝트 학습 모듈이 각각 개발되어야 하며, 동시에 계열에 따른 별도의 프로젝트 학습 모형이 개발 적용되어야 할 것이다.

• 감성과학
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• 제25권3호
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• pp.3-14
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• 2022

화상회의 시스템 사용자 증가 및 기술 발전으로 인해, 화상회의 사용맥락과 화상회의 인터페이스 레이아웃이 다양해졌다. 사회불안은 화상회의 소통상황에도 영향을 주는데, 대면소통과 구별되는 요소인 비디오 피드백과 밀접한 관련성이 있는 것으로 나타났다. 비디오 피드백은 상대방에게 보이는 본인의 모습을 화상회의 시스템 인터페이스에 표시해주는 기능이다. 비디오 피드백은 업무 성과를 저해하고 피로감을 유발하는 것으로 알려졌으나, 화상회의 시스템에서 기본 기능으로 설정되어 있고 사용자들에게 보편적으로 선호된다. 본 연구는 과업지향정도, 비디오 피드백 화면크기, 사회불안이 비디오 피드백 선호도에 미치는 영향을 보기 위해 실시되었다. 연구는 온라인 설문으로 진행되었고, 설문 참가자는 화상회의 중 과업지향정도, 사회불안수준, 선호하는 비디오 피드백 화면크기, 비디오 피드백 기능 선호도를 평가하는 문항에 응답하였다. 연구 결과, 비디오 피드백 화면크기는 과업지향정도와 비디오 피드백 선호도를 매개하는 것으로 나타났다. 구체적으로 과업지향정도가 높을수록 작은 비디오 피드백 화면크기를 선호하였고, 이는 비디오 피드백 선호도 감소로 이어졌다. 한편, 사회불안수준에 따른 비디오 피드백 화면크기의 매개효과 차이는 유의미하지 않았다. 이러한 결과는 사용자와 화상회의 시스템의 상호작용에 대한 이해에 도움을 주어 화상회의 시스템 디자인에 활용될 수 있는 정보를 제공한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.262-264
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• 2002

The characteristic features of Malaysia's climate is has stable temperature, with high humidity and copious rainfall. Weather forecasting is an important task in Malaysia as it could affetcs man irrespective of mans job, lifestyle and activities especially in the agriculture. In Malaysia, numerical method is the common used method to forecast weather which involves a complex of mathematical computing. The models used in forecasting are supplied by other counties such as Europe and Japan. The goal of this project is to forecast weather using another technology known as artificial neural network. This system is capable to learn the pattern of rainfall in order to produce a precise forecasting result. The supervised learning technique is used in the loaming process.

• 산업기술연구
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• 제22권A호
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• pp.219-228
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• 2002

The divided channel is not often used on the river and when the installation is for the controlling of the flow quantity. The determination of the channel size is not a easy task. Model tests are examined to confirm the variation of distribution rate by the method of the channel installation and the position of the structure and the adjustment of numerical simulation is executed by the comparing of the results. This study is to execute numerical model according to installation of divided channel by using AQUADYN program, the 2nd dimension numerical model, and HEC-RAS program, the 1st dimension numerical model, by the shape of divided channel. Also, it compares with difference by method about each case.

• 대한인간공학회지
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• 제16권3호
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• pp.71-75
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• 1997

This paper presents the development of videobased 3-dimensional tracking system. Measurement of human motion is important in the application of ertonomics. The system uses advanced direct video measurement technology. Passive retro-reflecting markers are attached to a subject and movements of markers are observed by two CCD cameras. Infrared light emitted near the CCD cameras is reflected by the markers and is detected by the cameras. The images are captured by Samsung MVB302 board and the centers of markers are calculated by DSP program. The positions of markers are transferred from MVB02 board to the computer through AT bus. The computer then tracks the position of each marker and saves the data. This system has dynamic accuracy with 0.7% average error and 4.2% maximum error, and the sampling rate to 6 .approx. 10 Hz, and this system can analyse the trajectory and speed of the marker. The results of this study can be used for operator's motion analysis, task analysis, and hand movement characteristic analysis.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 춘계학술대회 및 기술 세미나 논문집 디스플레이 광소자
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• pp.45-46
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• 2008

The conventional biased vertical alignment (BVA) mode has several advantages such as rubbing- and protrusion-free, wide-viewing angle and stable LC dynamics against external pressure. However manufacturing process of BVA mode is difficult task because the pixel and bias electrode signal are different in each frame. To solve this problem, we investigated the pattern free vertical alignment (PFVA) by using the UV-curable reactive mesogen (RM), in which the LC molecules were made to be pre-tilted. Eventually transmittance and response time in PFVA mode were found to be improved as compared to BVA mode.

• 한국멀티미디어학회논문지
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• 제23권5호
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• pp.658-666
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• 2020

PGP is an encryption software designed to provide information protection, security and authentication services for online communication systems. The characteristic of behavior done on the Internet is that you don't know the other person. It is very important to protect information from someone you cannot trust. So identification of the other person is an important task. PGP uses an digital signature algorithm to verify the identity of the other party. However, it is not accurate to check the other party's credibility. PGP increases trust as other users sign more on public keys of user. In other words, credibility is not perfect. In this paper, PGP certification system that key management in Ethereum blockchain, one of the blockchain platforms, is proposed. Key management in blockchain ensures data integrity, transparency and reliability.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 춘계학술발표회
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• pp.113-119
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• 2004

A steel plated is typically composed of plate panels. The overall failure of the structure is certainly affected and can be governed by the bulking and plastic collapse of these individual members In the ultimate limit state design. therefore. a primary task is to accurately calculate the budding and plastic collapse strength of such structural members. Structural elements making up steel palated structures do not work separately. resulting in high degree of redundancy and complexity in contrast to those of steel framed structures. To enable the behavior of such structures to be analyzed, simplifications or idealizations must essentially be made considering the accuracy need and degree of complexity of the analysis to be used Generally the more complex the analysis the greater is the accuracy that may be obtained. The aim of this study is the investigation of the effect of the tripping behaviour including section characteristic for a plate under uniaxial compression.

• 음성과학
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• 제14권4호
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• pp.41-52
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• 2007

Recent experimental studies have shown that language-users' knowledge of the statistical characteristic of their native language plays a key role in their task performance. One specific instance of this that the current study focuses on is the effect of phonotactic probabilities on speakers' wordlikeness judgment of nonwords. In this paper, I explore the question of whether the judgment of Korean speaking subjects as to the wordlikeness of Korean nonsense words is influenced by the degree of association between two-phoneme sequences in Korean. The current results suggest that the objective measure of correlations (expressed by $r_{\phi}$ values) between an onset consonant and a vowel inside Korean syllables play an important role in Korean speakers' nonword processing. The current results additionally indicate an effect of the correlations of two-phoneme sequences including vowels and coda consonants on nonword processing. Implications of these findings for Korean speakers' learning the correlations between adjacent segments inside the syllable are discussed.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1996년도 추계학술대회논문집
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• pp.160-165
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• 1996

This paper presents the development of video-based 3-dimensional tracking system. Measurement of human motion is important in the application of ergonomics. The system uses advanced direct video measurement technology. Passive retro-reflecting markers are attached to a subject and movements of markers are observed by two CCD cameras. Infrared light emitted near the CCD cameras is reflected by the markers and is detected by the cameras. The image ae captured by Samsung MVBO2 board and the center of markers is calculated by DSP program. The position of markers are transferred from MVB02 board to the computer through AT bus. The computer then tracks the position of each marker and saves the data. This system has dynamic accuracy with 1% error and the sampling rate to 6-10 Hz, and can analyse the trajectory and speed of the marker. The results of this study can be used for operators motion analysis, task analysis, and hand movement characteristic analysis.