• Soft Computing and Machine Intelligence
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• 제1권1호
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• pp.31-35
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• 2021

In recent years, due to COVID-19, the process of shopping has become more restricted and difficult for customers. Based on this aspect, customers are more interested in online shopping to keep the Untact rules and stay safe, similarly ordering their product based on their need and interest with most straightforward and fastest ways. In this paper, the reinforcement learning technique is applied in the product recommendation system to improve the recommendation system quality for better and more related suggestions based on click patterns and users' profile information. The dataset used in this system was taken from an online shopping mall in Jeju island, South Korea. We have compared the proposed method with the recent state-of-the-art and research results, which show that reinforcement learning effectiveness is higher than other approaches.

• 경영정보학연구
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• 제25권4호
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• pp.47-65
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• 2023

본 논문에서는 투표의 본질적 속성인 4대 원칙을 기반으로 온라인투표시스템이 어떻게 신뢰를 구현할 수 있는지 기술적 관점에서 조망해 본다. 이는 오프라인투표가 온라인투표보다 더 안전하고 신뢰할 수 있다는 기존의 믿음을 투표 절차와 기술적 원리를 기반으로 정교하게 평가해 보려는 것이다. 많은 연구들이 온라인투표시스템을 위한 아이디어를 제시해왔지만 투표의 요구조건 관점에서 절차적으로 엄밀히 따져보지 않았고 또 현실적 수용의 측면에서 검증이 미진한 경우가 많았다. 이에 본 연구는 온라인투표시스템이 어떻게 투표라는 과정의 엄격한 요구조건을 충족시키고 있는지 현업에서 검증된 기술을 중심으로 분석해본다. 일반적 데이터 보안에 더하여 온라인투표는 데이터 위·변조 및 부정행위 방지와 검증을 위한 기술이 더 필요하다. 뿐만 아니라 외부자는 물론이고 관리자 및 시스템 자체에게도 투표데이터가 노출되면 안 되는 고도의 기밀성이 요구된다. 이를 위해 은닉서명, 비트위임, 키분할 등을 활용하며 블록체인 기반 투표일 경우 익명성을 보장하기 위해 믹스넷과 영지식증명이 필요하다. 본 연구에서는 이론적으로 설명되고 있는 보안기술들을 실제 서비스하고 있는 현업의 시스템을 기반으로 고찰해봄으로써 온라인투표시스템의 현황을 진단한다. 이러한 시도는 온라인투표 보안기술에 대한 이해를 높이고 온라인투표의 적용 확장성을 조망하여 보다 신뢰 기반 투표 메커니즘을 구축하는데 기여할 것이다.

• 간호행정학회지
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• 제15권2호
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• pp.255-263
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• 2009

Purpose: The purpose of this study was to develop online health promotion an education program for university students and to evaluate its changes. Method: An online health promotion education program was established through analysis, designing, development, implementation and evaluation stages. This was a quasi-experimental, one group pretest-posttest design. The subjects of this study were 97 students in one university, and they were provided the online class for 16 weeks. Data was analyzed by descriptive statistics and paired t-test. Result: The results of program evaluation were positive, which included instruction function 3.94, system construction 4.14, system function 3.90, and overall evaluation 4.03 on the scale of 5. The posttest scores of health promoting lifestyle(t=-2.316, p=0.024) was significantly higher than those of the pretest. Conclusion: This study shows that the online health promotion education program was an effective educational method to improve health promotion lifestyle for the university students.

• 한국멀티미디어학회논문지
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• 제12권10호
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• pp.1427-1435
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• 2009

이러닝은 교실에서 수업이 이루어지는 전통 수업 방식과는 달리 학생들이 각자의 장소에서 온라인으로 수업에 참여 할 수 있는 수업방식이다. 그리고 시험도 온라인에서 이루어지는 경우가 많아 이 경우 시험감독이 어렵다. 감독이 어려운 온라인 시험도 성적에 포함되므로 공정한 학사관리가 중요하다. 본 연구에서는 카메라를 이용한 온라인 시험 공정성 강화 시스템을 제안한다. 온라인 수강생은 매 강의를 학습한 후 출석확인을 위해 카메라로 얼굴을 촬영하고 촬영된 영상은 저장된다. 그리고 시험을 치는 동안 시험 장면을 촬영하고 얼굴을 검출하여 대리시험 등의 부정행위를 방지하고자 한다. 촬영된 영상은 시험이 종료된 후 시험 답안지와 함께 사이버 학사관리 시스템에 전송시키고 시험 성적표와 함께 사진을 인쇄하여 본인을 인증하고 시험 부정을 방지하고자한다.

• 공학교육연구
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• 제24권5호
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• pp.3-14
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• 2021

This study deals with the case of online-based project learning, which was designed for the purpose of university educational innovation and enhancing learners' competencies required by society, operated during the COVID-19 pandemic. The course was applied Python programming language, team-based project learning, and intensive course system, which is required by our society and companies in the era of the 4th industrial revolution. Also it was operated as a non-face-to-face online class, which would have been operated in an offline class if it had not been for Covid 19 pandemic, to explore the possibilities and educational effects of online learning. To do this, 32 university students participated in online-based project learning during 8 weeks, and then conducted a survey. The survey results were analyzed in terms of i) non-face-to-face online learning, ii) team-based project learning, and iii) application of the intensive course system. Results say that most of the learners were satisfied with the online learning, team-based project learning, and the intensive semester system applied in this course at a high level, and also they clearly presented the reasons. Thereby, it has been confirmed that the learners were already well aware of the pros and cons of each learning method. Based on these results, the implications were discussed.

• 지식경영연구
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• 제19권2호
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• pp.109-132
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• 2018

Recently, new financial services related to FinTech has gained attention more and more. Online P2P financial services transactions such as FinTech require careful examination of the constituents of information systems as an investment is made based on the information presented on the online platform without direct face-to-face contact. The purpose of this study is to find out the success factors of online P2P Lending service among FinTech. To serve the purpose, we build IS (information system) success model, and then use Kano model and fuzzy analytic hierarchy process (Fuzzy-AHP) to find out factors for the success of online P2P Lending service. In particular, this study uses Kano model to classify information system satisfaction factors and to calculate the satisfaction coefficient. The Kano model, however, has a drawback of evaluating single criterion. Therefore, we use multi-criteria decision-making technique such as Fuzzy-AHP to derive the relative importance of the factors. The analysis results show different results depending on the analysis technique. In the Kano model, most of the information system factors are a one-dimensional quality attribute. The satisfaction coefficient is highest for personalized service, followed by the responsiveness of service, ease of using a system, understanding of information, usefulness of information' reliability. The service reliability is the highest in dissatisfaction coefficient, followed by system security, service responsiveness, system stability, and personalized service. The results of the Fuzzy-AHP analysis shows that the usefulness of information quality, the personalization of service quality, and the security of system quality are the significant factors and the stability of system quality was a secondary factor.

• 디지털융복합연구
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• 제12권4호
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• pp.455-460
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• 2014

본 논문은 온라인 게임 중독 방지 시스템을 개선하는 목적으로 지금 중국 게임회사와 한국 게임회사에서 사용하고 있는 중독 방지 시스템을 살펴보고 비교하여 문제점을 찾아서 해결 방법을 제시 해 보고자 한다. 청소년 게임 중독예방 제도에 대한 연구가 수없이 많지만 실행 시스템에 대한 연구는 아직 미비하다. 본 논문은 중국 온라인게임 중독 방지시스템의 문제를 제시하고 해결 방법을 모색하는 동시에 추후에 발전, 개선방향을 제시하고자 한다.

• 한국경영정보학회:학술대회논문집
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• 한국경영정보학회 2008년도 춘계학술대회
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• pp.383-393
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• 2008

Online games are the popular topic due to the increased total online game market volume nowadays. And many studies on online games are released. But most studies used the questionnaire method that reveals only section of the situation like a snapshot. For this reason, previous studies have a little limitation that does not show dynamical changing issues like a product life cycle and changes in customer's mind Because of this, we studied on online games with the system dynamic model which can show dynamic simulations to analysis time series data. We chose MMORPG (Massively Multi-play Online) RPG (Role Playing Game) in sort of online games because it has many absorbing factors and enthusiastic users. We designed the simulation model which analyzes the influences of update and CRM strategy on users. We put the game developer who is ready for updated version game and released that periodically and focused on dormant users who used to be enthusiastic about MMORPG. The simulation results showed that the update has positive influences on new users gathering and hold established users. And CRM strategies help to prevent dormant users from transferring to rivals by offering them re-absorbing factors. Through this study, we confirmed the importance of update on online games and the necessity of introducing CRM strategy in the online game market.

• 한국보건간호학회지
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• 제34권3호
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• pp.405-415
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• 2020

Purpose: This study was undertaken to identify the mediating effect of family strengths in the relationship between e-learning readiness and learning management system-based online education learning outcomes. Our results provide basic data for proposing strategies to increase online education learning outcomes of nursing students. Methods: A self-report questionnaire was surveyed by 133 nursing students who took online education using a learning management system at three nursing colleges in Daejeon, Jeonbuk, and Gyeongbuk. The mediating effect of family strengths in the relationship between the e-learning readiness of the subject and online education learning outcomes, were analyzed by hierarchical multiple regression. Sobel test was performed to verify effectiveness of the pathway. Results: In the relationship between e-learning readiness and online education learning outcomes of nursing students, family strengths were determined to exert absolute mediating effect. Conclusions: Our results indicate that in order to improve e-learning readiness, the basic curriculum for nursing students should include web-based communication, cooperation, and the use of information technology, including interaction for online education. Improvements in family strengths can be achieved through home study activities, such as frequent conversations with members, monitoring achievements of the students, and sharing family leisure activities.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
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• pp.117-120
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• 2000

In this paper, we suggest an authentication system for online lecture using facial information and a face recognition algorithm base on relation of face. First, a facial area on complex background is detected using color information. Second, features are extracted with edge profile. Third, compare it with the value of original facial image in database. By experiments, we know that the proposed system is an useful method for online lecture authentication system.