• 교육시설
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• 제9권2호
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• pp.37-50
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• 2002

Computers have become an indispensable part of everyday lives in 21st century. This is particularly true in early childhood education; multimedia use in kindergarten has rapidly grown in the last decade. Although ample research had been done on the issues of teachers' role in multimedia settings and selecting quality materials, few studies have been done on the proper environment for multimedia use in early childhood education. In this regard, this research examines the current status of multimedia use-animated illustration films, CD-ROM titles, and internet-in kindergarten. In addition, computer environment in kindergarten is investigated in order to provide guidelines for appropriate facilities and equipments. For smooth integration of computer activities into a school system, computers are located in ordinary classrooms in more than half of kindergarten in Seoul. Computers are used in independent lab settings in the last of the kindergarten in Seoul and there are four different types of lab settings. Among them computer at perimeter style is preferred for the ease of student-teacher, and student-student interactions. The importance of environment for early childhood education cannot be overestimated. It is so critical for early childhood education that the people in this field regard the environment as 'the third teacher' next to parents and teachers. Therefore the multimedia environment should also be considered seriously for the maximum use in early childhood institutions.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2009년도 춘계학술발표논문집
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• pp.730-733
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• 2009

This study focuses on the security issues of a handheld technology in auto vaccination scenario. Handheld or palm-based computing technology, commonly known as personal digital assistant (PDAs)are having tremendous impact in many personal, educational and business settings, the potential is particularly compelling for healthcare, specifically in the clinical settings. By exploring the development of the technology and its application, as well as the issue of its security would provide a better understanding of this technology.

• 한국멀티미디어학회논문지
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• 제6권4호
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• pp.650-657
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• 2003

We describe a scheme for developing character-based interface within the context of an agent-based tutoring system in the Web environment. The ideas in this paper stem from original work representing aspects of human emotion in tutoring computer models, where may provide mote natural ways for students to communicate with digital learning materials. The proposed system model is a set of software services that enable developers to incorporate interactive animated characters into their Web pages designed for on-line lectures. The prototypical application is developed and shown for validating the applicability and the effectiveness of this model in real tutoring settings.

• 한국멀티미디어학회논문지
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• 제23권12호
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• pp.1565-1575
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• 2020

This study examines the game balance of the MOBA game genre, which was selected as a model item for the Asian Games. The "bird-eye view" was used for a more efficient representation of 3D modeling. Based on that, statistical analysis was conducted to present appropriate game camera settings and camera balance to match the competitive structure of the MOBA game. A review of the game camera settings reveals that 64° to 70° is the angle that minimizes the difference in vision between the two-player teams the most. Through a one-way ANOVA analysis, we found that the user ranking level and SVB value are closely related. Therefore, the factor of the regression equation using the SVB value must have a user ranking level. As a result of the optimized camera focus analysis of , the camera setting methods were classified into 3 types. For main action games, the recommended camera angle is 64°~66°, and the recommended camera focus is 11.2 mm~19.3 mm. For action and strategy games, the camera angle is 66°~68°, camera focus - 19.3 mm~27.3 mm. And lastly, for the main strategy game, the recommended camera angle is 68°~70°, and the camera focus is 27.3 mm~35.3 mm.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권1호
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• pp.178-202
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• 2012

In this paper, we first survey cross-layer architectures for Wireless Sensor Networks (WSNs) and Wireless Multimedia Sensor Networks (WMSNs). Afterwards, we propose a novel cross-layer architecture for QoS provisioning in clustered and multi-hop based WMSNs. The proposed architecture provides support for multiple network-based applications on a single sensor node. For supporting multiple applications on a single node, an area in memory is reserved where each application can store its network protocols settings. Furthermore, the proposed cross-layer architecture supports heterogeneous flows by classifying WMSN traffic into six traffic classes. The architecture incorporates a service differentiation module for QoS provisioning in WMSNs. The service differentiation module defines the forwarding behavior corresponding to each traffic class. The forwarding behavior is primarily determined by the priority of the traffic class, moreover the service differentiation module allocates bandwidth to each traffic class with goals to maximize network utilization and avoid starvation of low priority flows. The proposal incorporates the congestion detection and control algorithm. Upon detection of congestion, the congested node makes an estimate of the data rate that should be used by the node itself and its one-hop away upstream nodes. While estimating the data rate, the congested node considers the characteristics of different traffic classes along with their total bandwidth usage. The architecture uses a shared database to enable cross-layer interactions. Application's network protocol settings and the interaction with the shared database is done through a cross-layer optimization middleware.

• 한국멀티미디어학회논문지
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• 제2권1호
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• pp.59-68
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• 1999

멀티미디어 응용프로그램들은 일반적으로 많은 양의 데이터 전송과 실시간특성을 가지고 있다. 모빌환경에서 실시간 대용량 연속매체의 재생은 낮은 전송속도와 핸드오프시의 새로운 데이터 전송경로설정 등으로 인하여 매체재생의 단절, 재생품질 저하 등의 문제를 야기한다. 이러한 부작용을 방지하기 위해서는 베이스 스테이션과 모빌 호스트 사이에 데이터 전송대역폭의 효융적인 사용법과 모빌 호스트의 버퍼관리를 효과적으 로 하여야 하며, 핸드오프시 새로운 데이터 전송경로를 빠르게 전환시켜 주어야한다. 본 연구는 대용량 실시간 의 멀티미디어 재생특성을 고려, 모빌 호스트에 양질의 서비스를 제공하는 효율적인 대역폭 사용법과 단위 셀에서 수용할 수 있는 모빌 호스트의 수를 확대하는 메커니즘을 제시하고자 한다.

• Journal of Multimedia Information System
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• 제4권4호
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• pp.285-288
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• 2017

In this paper, we propose a vision-based object detection and tracking system using online learning. The proposed system adopts a feature point-based method for tracking a series of inter-frame movement of a newly detected object, to estimate rapidly and toughness. At the same time, it trains the detector for the object being tracked online. Temporarily using the result of the failure detector to the object, it initializes the tracker back tracks to enable the robust tracking. In particular, it reduced the processing time by improving the method of updating the appearance models of the objects to increase the tracking performance of the system. Using a data set obtained in a variety of settings, we evaluate the performance of the proposed system in terms of processing time.

• 한국멀티미디어학회논문지
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• 제22권7호
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• pp.804-814
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• 2019

The patient's waiting time and length of stay have been reported as a factor decreasing their satisfaction in the hospital, especially in developing countries. This paper focuses on modeling hospital's outpatient department workflow in a developing country and optimizing the patient waiting time as well as total length of stay. By using discrete-event simulation, many alternative scenarios have raised, such as adding more working time, altering human resources, and adjusting the staff's responsibility, those scenarios will be examined to explore better settings for the hospital. The results show that possible to achieve a 9.6% reduction in patient total length of stay and it could be accomplished without adding more resources to the hospital.

• 한국멀티미디어학회논문지
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• 제24권11호
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• pp.1560-1566
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• 2021

Cyber Sickness, which occurs when using Virtual Reality contents, is the most serious problem in immersive Virtual Reality contents. The purpose of this study is to identify the effects and causes of graphic environmental factors on Cyber Sickness in Virtual Reality contents. To this end, cyber sickness experiments were conducted according to the light source and material settings, which are most commonly used in graphical environmental elements. Cyber Sickness measurements were based on the Simulator Sickness Question(SSQ) tool to derive an index that causes Cyber Sickness As a result of the analysis, the smaller the surface roughness, the higher the degree of Cyber Sickness, and the smaller the surface roughness, the smoother the surface of the 3D object, and many specular reflections from the light source occurred, which was confirmed to be the cause of great Cyber Sickness.

• 한국간호교육학회지
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• 제5권2호
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• pp.165-176
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• 1999

The goal of women's health education can be defined as improvement of the quality of their life during entire life cycle. In Korean society, women's well-being is very important to themselves as well as their families, communities. and country. Thus it is important to systematize information on women's health education. These systematized information can be used in preparation of coming 21st century called information era. Unfortunately there have been few studies in women's health education research in Korea especially distance education for women's health related with korean socio-cultural background, etc. Distance education has been internationally used in a variety of settings as a means of providing health education information. The objective of this study was to apply and evaluate a multimedia videoconferencing on women's health distance teaching-learning process. In this study I'd like to design multimedia digital educational material used in the distance teaching-learning process for women's health, and to practice a multimedia videoconferencing on women's health distance teaching-learning processs. The procedures of this study were summarized as follows ; 1. Analysis of subjects' characteristics and education contents and for women's health. 2. Design of a multimedia videoconferencing on women's health distance teaching-learning process. 3. Development of women's health distance teaching-1earning process. 4. Evaluation of developed digital multimedia and distance teaching-learning process related with women's health These results will be used in development of the distance-learning education program for improving Korean women's health. Findings su99est that the advanced methodologies for designing and evaluating the women's health distance teaching-learning programs be obtained through the collaboration with other field's staffs.