• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.8
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• pp.3680-3686
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• 2012

This research suggests a monitoring method to support QoS of mobile multimedia services effectively based on information gathering. It means a method in which a subscriber's terminal collects information about its current condition and its surrounding base stations, and a base station, through the data collected by monitoring inner or adjacent base station, shares related data and converges, controlling QoS on its own. In other words, as context information of mobile terminal and base station changes, set-up of related functions and QoS mapping is adapted; each function fits into the change, exchanges the process of reorganization, and interacts; these actions go toward to satisfy service continuity.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.245-252
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• 2024

This study sought to identify the interactive relationship between the individual cognitive characteristics of perceived consumer effectiveness and the impact of the message framing type of a fashion brand's sustainable marketing on consumers' brand trust. As a result of the study, it was confirmed that the fashion brand's message framing type increased consumers' perceived consumer effectiveness, and that the recipient's perceived consumer effectiveness each influenced the formation of consumers' trust in the brand. It was confirmed that the fashion brand's message frame directly had a positive effect in forming consumers' brand trust.

• Journal of Korea Multimedia Society
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• v.8 no.4
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• pp.575-585
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• 2005

Research and development projects, in the past decade, has shown that object-oriented(OO) technology could importantly contribute in productivity and reusability improvement. There are various research areas related to OO technology. Two of major research fields in this areas are concerned in issues for CASE tools and component-based technologies. This paper discusses an example of applying component-based technology to a CASE tool. This paper proposes the research experience gained while we have incrementally developing OODesigner, an OO CASE tool, with compound document support functionality based on COM/OLE technology. As OODesigner with OLE container functionality has interoperability with other application programs of Windows system which can be run as a OLE server, it can provide more powerful documentation environment than other CASE tools. OODesigner can be used not only to design UML diagrams, but also to make documentation cooperatively with various kinds of OLE- enabled software like Recoder and Excel. Therefore we can conduct powerful and consistent documentation with the tool.

• Journal of Korea Multimedia Society
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• v.13 no.11
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• pp.1630-1642
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• 2010

Recently, there is an increasing need for developing the technique of Hand Gesture Recognition (HGR), for vision based interface. Since hand gesture is defined as consecutive change of hand posture, developing the algorithm of Hand Posture Recognition (HPR) is required. Among the factors that decrease the performance of HPR, we focus on rotation factor. To achieve rotation invariant HPR, we propose a method that uses the property of video that adjacent frames in video have high correlation, considering the environment of HGR. The proposed method introduces template update of object tracking using the above mentioned property, which is different from previous works based on still images. To compare our proposed method with previous methods such as template matching, PCA and LBP, we performed experiments with video that has hand rotation. The accuracy rate of the proposed method is 22.7%, 14.5%, 10.7% and 4.3% higher than ordinary template matching, template matching using KL-Transform, PCA and LBP, respectively.

• The Journal of the Korea Contents Association
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• v.18 no.10
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• pp.183-193
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• 2018

The purpose of this study is to suggest a writing education paradigm appropriate for the ideology and ideal persons of Christian universities, and to show the effective application plan. For this, this study utilizes the ideas of digital writing in the concept of digital literacy education. The paradigm of "the digital writing education using bible storytelling" consists of two activities. The first one is 'bible listening and observation,' and the second one is 'media text creation and sharing'. In the first activity, there are two steps: 'listening and observation of bible storytelling' and 'exploration and meditation.' In the second activity, there are also two steps: 'application and action,' and 'sharing in communities.' After the suggestion, this study proposes the application plan for the paradigm. They are 'the utilization of various media and the merit of interaction,' healing effectiveness in an individual and a community,' 'building expertises in both letter writing and Christian education(Divinity),' 'building expertises in both letter writing and media literacy,' and 'expanded application toward diverse patterns of writing.'

• Journal of Digital Convergence
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• v.15 no.6
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• pp.369-376
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• 2017

In a digital multimedia environment with various experiences and communication, We live in an age where it is possible to experience from imagination to reality realizable by imagination. The remarkable technology based on ICT has been attracting attention as next generation video service technology from 3DTV, UHD TV, and hologram. These media, combined with space design, are able to offer us amazing and diverse experiences. In addition, now, there is a demand for more differentiated contents using human five senses recognition technology. We analyzed the application of realistic contents to space design. As a result, we have come to the conclusion that creative production which can express more fun and convenient will be an important issue.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.281-285
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• 2008

In the digital media era, coded and non-coded communication are used to convey the message. As the computer interface has been adopted human communication methods, non-coded communication has bee used in the computer interface as well. The changes of message structure in the computer interface have an effect on shifting the way of user's message acceptance from passive to active. The recently developed computer user interfaces are for user to experience diverse visual effect The communication conveyed with this visual effects could be vague but user can conceive strong impact. This experience is understood not only through the visual experience from a monitor screen but also with a sense of tactile. The meaning of sensual and spectacle motion image could be ambiguous. However in the experience of using an interface, it plentifully expands the human sense by giving a visual experience on a whim. The sensually extemporaneous and splendid visual effect that has vague meaning has been very common happening in digital media environment.

• Journal of Korea Multimedia Society
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• v.7 no.7
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• pp.956-966
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• 2004

The Korean animation has enjoyed the brisk formation and establishment of its world-class infra for the last several years without unified titles or concepts, under the name of a national strategic project in the age of digital image. It also enjoys its new evaluation as digital animation that it's one of the greatest money making business in the non-education and frivolous culture and has the closest relations with the modern time. A great portion of popular image media has been taken by animation for the last 30 years. In this paper we propose a motion algorithm using an animation technology. It was developed for education purposed and accessible through the internet. For instance, in Cyber Clam Museum, 1000 gesture contents, the visual processes were used to design a screen with a realistic image and create an animation that makes possible show at 360 and every such transformation as translation, rotation, and scaling can be applied in the image interactively for the convenient and effective viewing.

• Korea Multimedia Society
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• v.14 no.4
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• pp.88-98
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• 2010

It is now the era of ubiquitous which is highly integrated on the convergence technologies with not only ICT bul also BT, CT, NT and ST. Through this convergence technology, the understanding on visualization of 3D virtual reality which make more human's 5 feelings activate beyond the wall of time and space is recently very important. We search the visualization technology of 3D virtual reality and estimate the future development, and give the perspectives. Since the visualization technology of virtual reality is strongly depended on 3D computer graphics representations, 3D image visualization technology being able to get immersion has been possible. The new paradym on computer interactions is implemented by making images augment on the base of the PC and display equipments. The studies is established on the direction of more intensity on humanity. And also, these technologies will be able to achieve actively the implementations for ubiquitous society dueing to get the high-technology on the superhighway networks.

• Journal of Korea Multimedia Society
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• v.11 no.8
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• pp.1111-1120
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• 2008

Cellular automata(CA) is often applied to design cryptosystems because it has good diffusion and local interaction effects. Recently, a 128-bit CA-based block cipher, called CAB1, and a 64-bit reversible CA-based block cipher, called CAB2, were proposed in KMMS'02 and CEC'04, respectively. In this paper, we introduce cryptanalytic results on CAB1 and CAB2. Firstly, we propose a differential attack on CAB1, which requires $2^{31.41}$ chosen plaintexts with about $2^{13.41}$ encryptions. Secondly, we show that CAB2 has a security of 184 bits using the statistical weakness. Note that the designers of CAB2 insist that it has a security of 224 bits. These are the first known cryptanalytic results on them.