• The Journal of the Korea Contents Association
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• v.7 no.4
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• pp.83-90
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• 2007

Flow theory has been borrowed from psychology to address positive user experiences with computers and Internet. The flow experience in computer-mediated environment (CME) has been correlated to increased communication, loaming, exploratory behavior and positive affect. A comparative experiment between CME and traditional paper-pencil environment was conducted to verify whether particular environments or interfaces are more conducive to yielding flow among users. The results showed that there were no differences in flow dimensions except 'enjoyment' between CME and paper-pencil environment. But the distorted senses of time among users were significantly different between the media environments.

• Communications of Mathematical Education
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• v.24 no.4
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• pp.949-974
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• 2010

The purpose of the study was to investigate how students' understanding was formed for solving the algebra problems involving parameters in a computer algebra environment. The teaching experiment has been conducted with 6 high school students. As a result, students studied the parameter in different roles such as placeholder, changing quantity, unknown and generalizer. The results indicate that a computer algebra environment offers opportunities for algebra activities that may support the development of understanding of the concept of parameter.

• Journal of Educational Research in Mathematics
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• v.17 no.2
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• pp.111-125
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• 2007

In this article, we introduce an example about 'computers and mathematics education' and discuss its educational meaning. First, we survey two microworlds of Logo and DGS, which are two different representation systems for geometric phenomena. And we propose needs of connecting two microworlds with common perspective. And we suggest a mediation model that connects two representations in a microworld. Using this mediation model(Circle model), we construct a circle, a ellipse, and a cardioid with two different representations. It is important that the mediation model makes it possible that we translate descriptions from one representation into the other, and guess perimeters of planar curves. We also discuss roles and mathematical implications of this mediation model by error case in calculating perimeters of ellipses.

• Journal of the Korean Society for information Management
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• v.16 no.4
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• pp.7-36
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• 1999

In this paper, we have studied the technical contribution of internet as a computer mediated communication(CMC) tool for collection management. A new communication process is appearing due to the development of information technology and telecommunications technology which enable users to have an access to information without the help of librarian. Also, internet makes collection management possible in the absence of vendors. This study found out that internet reinforces the traditional functions of collection management and enables librarians to better perform their roles. The future library manager should become actively involved in the development of technology in order to manage resources of internet focusing on the needs of user. Also, we have concluded that collection management should be modernized and transformed with its emphasis on the new evaluation method and assessment of quality when offering resources of internet in the communication process using computers.

• 한국지구과학회:학술대회논문집
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• 2003.09a
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• pp.101-101
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• 2003

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.347-349
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• 2022

본 연구에서는 장애 임금근로자의 근로환경, 업무특성, 지속근무 의도, 직무만족도 간의 구조적 관계분석을 통해 장애 임금근로자의 직무만족도 향상 방안을 제시하고자 한다. 분석자료는 장애인고용패널 2차웨이브 6차년도 패널데이터 중 15세이상 임금 장애근로자 1,582명을 분석에 사용하였다. 분석결과, 첫째, 장애 임금근로자의 근로환경은 직무만족도에 정(+)적인 영향을 미쳤지만, 지속근무 의도에는 유의한 영향을 미치지 않았다. 둘째, 장애 임금근로자의 업무특성은 지속근무 의도와 직무만족도에 정(+)적인 영향을 미쳤다. 셋째, 장애 임금근로자의 지속근무 의도는 직무만족도에 정(+)적인 영향을 미치는 것으로 나타났다. 넷째, 장애 임금근로자의 근무환경과 직무만족도 사이에 지속근무 의도는 매개효과를 나타내지 않았다. 다섯째, 장애 임금근로자의 업무특성과 직무만족도 사이에 지속근무 의도는 매개효과를 미치는 것으로 분석되었다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.37-38
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• 2019

본 논문에서는 자원제한적인 IoT 환경에서 스케줄링 정확도 향상을 위해 Softmax를 이용한 Q-learning 기반의 패킷 스케줄링 기법을 제안한다. 기존 Q-learning의 Exploitation과 Exploration의 균형을 유지하기 위해 e-greedy 기법이 자주 사용되지만, e-greedy는 Exploration 과정에서 최악의 행동이 선택될 수도 있는 문제가 발생한다. 이러한 문제점을 해결하기 위해 본 연구에서는 Softmax를 기반으로 다중 센서 노드 환경에서 데이터 패킷에 대한 Quality of Service (QoS) requirement 정확도를 높이기 위한 연구를 진행한다. 이 때 Temperature 매개변수를 사용하는데, 이는 새로운 정책을 Explore 하기 위한 매개변수이다. 본 논문에서는 시뮬레이션을 통하여 제안된 Softmax를 이용한 Q-learning 기반의 패킷 스케줄링 기법이 기존의 e-greedy를 이용한 Q-learning 기법에 비해 스케줄링 정확도 측면에서 우수함을 보인다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1995.09a
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• pp.70-83
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• 1995

정보기술과 커뮤니케이션 네트워크의 발전은 개인 컴퓨팅(personal computing)에서 그룹 컴퓨팅(group computing)으로의 전환을 촉진하고 있 다. 이러한 경영환경에서 컴퓨터를 매개체로 한 커뮤니케이션에 관한 연구는 중요한 연구과제가 되고 있다. 이 연구의 목적은 컴퓨터를 매개체로 한 다양 한 회의양식과 과업유형의 차이가 그룹 결과에 어떤 영향을 미치며, 그룹의 상호작용 과정의 변화가 그룹 결과에 미치는 영향을 조사하는데 있다. 세가 지 서로 다른 회의양식과 세가지 과업유형이 실험실 실험으로 수행된다. 적 응구조화 이론에 기초한 연구 모델이 정립되었으며, 연구 모델의 정확한 검 증을 위해 종단 연구(longitudinal study)가 행해진다. 적응구조화 이론은 정 보기술, 사회구조, 그리고 인간 상호작용간의 관계를 설명해 주며, 이 연구를 위한 이론적 기반을 제공하고 있다. 그룹 커뮤니케이션 과정의 정확한 분석 을 위해 SYMLOG를 이용해 그룹 구성원의 커뮤니케이션을 코딩하여 조사 한다. 실험 환경의 구축은 표준 그룹웨어인 Lotus Notes를 이용한다.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.271-283
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• 2018

This study aimed to investigate the effect of adolescent development environment including parenting attitude, peer relationship, and school environment on delinquent behavior, and between these relationships, the mediate effect of media environment such as computer and mobile devices. The $6^{th}$ year data from Korean Children & Youth Panel Survey (KCYPS) was used and the subjects were limited to 518 students of $7^{th}$ grade who are in their early adolescence. The result shows that adolescents under more affectionate, over involvement, and abusive parenting attitude will commit delinquent behaviors more frequently, and so does alienated youth from their friends. Parenting inconsistency and communication with friends make them use computer and cell phone more often, and excessive media usage increases adolescent's delinquent behavior. In conclusion, family environment and peer relation have influence on adolescents' delinquent behavior. Therefore, there is necessity to build development environment that prevent adolescents' delinquencies like parent education program or peer communication program for example. Also, proper education program for using computer or cell phone usage can reduce adolescents' delinquent behaviors, especially when its addictive aspect was recently issued.

• Journal of the Korea Society of Computer and Information
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• v.20 no.6
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• pp.21-28
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• 2015

The purpose of this study is to find out the mediation effect of college adaption for the relationship between learning flow and university dropout in local university. For this study, 281 university students in Chungbuk region were applied to assess the mediation effect of college adaption for learning flow and university dropout by using confirmatory factor analysis, hierarchical multiple regression of Baron and Kenny, and Sobel test. The results show that more learning flow tended to have more difficultly in university dropout, and it was founded that academic and social adjustment for university adaption(mediator) partially mediated the influence of learning flow (independent variable) on univeristy dropout (dependent variable), institutional adjustment was fully mediated, and personal-emotional adjustment was no mediation effect. Based on the results of this study, we suggest a implication to decrease university dropout through increasing learning flow and university adaption.