• The KIPS Transactions:PartB
• /
• v.12B no.2 s.98
• /
• pp.167-172
• /
• 2005

A rapid growth in the number of Internet users and in massive media contents tends to cause server overload and high network traffic. As a consequence, it can be safely assumed that the quality of service is on the brink of deterioration. A solution of this problem is the development of the Content Distribution Network. Therefore, in this paper, we propose a transmission model using CDN. This model uses regional media server which closes to client, and uses MDC coding and multi-channel to reduce packet loss and delay. In conclusion, this study improved performance of multimedia service by reducing packet loss and delay.

• The Journal of the Korea Contents Association
• /
• v.15 no.12
• /
• pp.153-164
• /
• 2015

This research focuses on analyzing how leisure satisfaction of line dance participating middle-aged and old women impacts on self esteem and quality of life. By identifying the relationship between these factors, benefit of line dancing by middle-aged and old women will be confirmed. The result of this study are as follows. First, group participating in 2 hour class of line dancing had highest leisure satisfaction. Secondly, in analyzing the effect of leisure satisfaction on self-esteem, health factor was the only sub-factor of leisure satisfaction to impact self-esteem. Thirdly, in analyzing the effect of leisure satisfaction on quality of life, health factor was the only sub-factor of leisure satisfaction to have effect on quality of life sub-factors, such as daily life satisfaction, emotional satisfaction, and environmental satisfaction. Fourthly, self-esteem also directly affects quality of life. Since health factor of leisure satisfaction directly affected self-esteem and quality of life, a causal relationship can be seen between the three variables: leisure satisfaction, self-esteem, and life quality.

• The Journal of the Korea Contents Association
• /
• v.21 no.12
• /
• pp.264-274
• /
• 2021

This study aims to analyze the impact of well-being tourism motivation on quality of life through well-being tourism satisfaction, focusing on wellness mediated effects. Recently, despite the growing number of well-being tourism pursuing wellness, the lack of research has led to a close analysis of the impact of well-being tourism motivation on quality of life through well-being tourism satisfaction. For this study, a total of 236 people who have experienced well-being tours in the metropolitan area were surveyed from May 10 to May 21, 2021. First, well-being tourism motivation has a positive effect on well-being tourism satisfaction. Second, well-being tourism satisfaction has a positive impact on the quality of life. Third, Wellness has a positive indirect effect as a partial mediator between well-being tourism satisfaction and quality of life The implications of this study are to demonstrate the impact of well-being tourism on quality of life using Wellness' mediators This study suggests that wellness tourism plays an important role in improving the quality of life. It was analyzed that well-being tourism had a positive effect on improving the quality of life at a time when the fatigue of daily life was increased due to prolonged COVID-19. In addition, Wellis analyzed that it is an important factor in enhancing the quality of life for well-being tourists. This contributes not only to the academic contribution to the revitalization of well-being tourism, but also to the development of stress improvement routes to improve people's lives nationally.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2010.05a
• /
• pp.979-980
• /
• 2010

최근 들어 삶의 질 향상과 고령사회로의 진입으로 건강 및 운동 관리에 대한 관심이 고조되고 있다. 이는 정해진 시간, 정해진 장소에서만 운동을 하는 것이 아니라 일상생활에서도 자연스럽게 운동을 하고 건강을 관리하고자하는 욕구를 발생시켰다. 또한, 모바일 이동통신 서비스와 모바일 콘텐츠 시장의 계속적인 성장으로 모바일 기기에서 쉽게 사용가능한 건강 콘텐츠의 필요성이 증대되고 있다. 본 논문에서는 개인의 건강정보, 생체정보를 통해 관광, 일상생활 등 언제 어디서든 모바일 폰을 통해 다양한 운동 콘텐츠를 제공받고 맞춤형 건강관리 서비스를 받을 수 있는 모바일 웹 기반의 자가 운동관리 시스템을 설계하고자 한다. 이를 위해 건강관리를 위한 생체신호 데이터 모듈, 운동 관리 및 기록 모듈, 운동 결과 분석 및 리포트 제공 모듈, 모바일 웹 표준을 지킨 인터페이스를 설계한다.

• Annual Conference of KIPS
• /
• 2024.05a
• /
• pp.544-545
• /
• 2024

최근 성인 독서량은 지속적으로 감소하는데 비해 영상 콘텐츠 소비가 증가하고 있다. 이에 따라 새로운 사용자에 대한 선호도 및 행동 패턴에 대한 정보가 없고 새로운 도서에 대한 사용자 평가나 구매 정보가 부족해 콜드 스타트 문제와 데이터 희소성 문제가 발생하고 있다. 본 논문에서는 영상물 콘텐츠 기반 도서 하이브리드 추천 시스템을 제안하였다. 제안하는 추천 시스템은 영상물의 콘텐츠를 활용하여 콜드 스타트 문제와 데이터 희소성 문제를 해결할 수 있을 뿐만 아니라, 전통적인 도서 추천 시스템에 비해 성능이 향상되었고 장르, 줄거리, 평점 정보 기반 사용자 취향 정보까지 모두 반영된 질 높은 추천 결과까지 확인할 수 있었다.

• The Journal of Korean Association of Computer Education
• /
• v.22 no.3
• /
• pp.101-112
• /
• 2019

This study aims to draw implications on a life-cycle system of digital contents through a case study about EDUNET in order to maintain the quality and efficiency of the service for educational digital contents in the primary and secondary education area. To achieve the objective, lead teachers in EDUNET service participated in requirements analysis about the life-cycle of the digital contents, for example, contents utilization periods, the periods for being updated, etc. From the results, it was found that a systematic life-cycle framework should be established to re-evaluate the contents in service and provide a quality of contents, responding to consistent changes for educational environments in teaching-learning and for educational topics/directions, or according to educational content's substance such as curriculum or extra-curriculum. This study contributes to suggesting needs to implement the systematic management of contents based on a life-cycle system by analyzing user's requirements in order to provide user-friendly service for the K-12 educational digital contents.

• The KIPS Transactions:PartA
• /
• v.18A no.1
• /
• pp.33-38
• /
• 2011

The purpose of this study is to develop and use the e-learning contents accessibility guidelines to improve contents accessibility for the non-technical developers and designers. The accessibility guidelines used for web or digital contents are usually technical, field dependent, or specific that are not friendly for many developers or designers. In this study, the e-Learning Contents Accessibility Guidelines was developed based on the principles of Universal Design for Learning. The guidelines could be used to map the necessary skills for the developers and the instructional designers. In this study, 5 users with different disabilities tested 6 e-learning contents, and surveyed e-learning experts to identify core elements for accessibility guidelines. Due to the limited accessibility of the contents, we need to offer manuals and training for developers and designers, need collaborative efforts between different stake holders, include accessibility in quality assurance guidelines, and further research to improve accessibility for many existing Flash contents.

• Journal of KIISE:Information Networking
• /
• v.32 no.4
• /
• pp.525-534
• /
• 2005

This paper is concerned with the query slipping and its prevention for trajectory-based matchmaking service in wireless sensor networks. The problem happens when a query propagating along a subscribe trajectory moves through a publish trajectory without obtaining desired information, even though two trajectories intersect geometrically. There follows resubmission of the query or initiation of another subscribe trajectory Thus, query slipping results in considerable time delay and in the worst, looping in the trajectory or query flooding the network. We address the problem formally and suggest a solution. First, the area where nodes are distributed is logically partitioned into smaller grids, and a grid-based multicast next-hop selection algorithm is proposed. Our algorithm not only attempts to make the trajectory straight but also considers the nodal density of recipient nodes and the seamless grid-by-grid multicast. We prove that the publishing and subscribing using the algorithm eventually eliminate the possibility of the slipping. It toms out that our algorithm dissipates significantly less power of neighbor nodes, compared to the non grid-based method, as greedy forwarding, and the fixed- sized grid approach, as GAF (Geographical Adaptive Fidelity)

• The Journal of the Korea Contents Association
• /
• v.14 no.8
• /
• pp.266-276
• /
• 2014

The present study aims to determine the effect of the prevention exercise program of musculoskeletal disorders developed for apple and pear farmers. To achieve this goal, 25 farmers who have subjective symptoms in the musculoskeletal system (Criteria 1 in the National Institute for Occupational Safety and Health) have conducted the prevention exercise program for 12 weeks from April 7, 2011 to July 1, 2011. As a result, the prevention exercise program of the musculoskeletal disorders for farmers in the fruit growing industry have improved physical capability of them (upper extremity endurance, lower extremity endurance, balance and agility) as well as a quality of life effectively. In addition, a quality of life showed a significant correlation with Oswestry Disability Index, and Psychosocial Well-being Index. For the future study, various studies are expected to develop and apply exercise programs in consideration of the characteristics of farming work.

• The Journal of the Korea Contents Association
• /
• v.7 no.1
• /
• pp.10-20
• /
• 2007

This paper describes a concept-based question analysis to analyze concept which is more important than keyword for the accurate answer extraction. Our idea is that we can extract correct answers from various paragraphs with different structures when we use well-defined concepts because concepts occurred in questions of same answer type are similar. That is, we will analyze the syntactic and semantic role of each word or phrase in a question in order to extract more relevant documents and more accurate answer in them. For each answer type, we define a concept frame which is composed of concepts commonly occurred in that type of questions and analyze user's question by filling a concept frame with a word or phrase. Empirical results show that our concept-based question analysis can extract more accurate answer than any other conventional approach. Also, concept-based approach has additional merits that it is language universal model, and can be combined with arbitrary conventional approaches.