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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of the Korea Contents Association
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The Korea Contents Association
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Volume & Issues
Volume 6, Issue 12 - Dec 2006
Volume 6, Issue 11 - Nov 2006
Volume 6, Issue 10 - Oct 2006
Volume 6, Issue 9 - Sep 2006
Volume 6, Issue 8 - Aug 2006
Volume 6, Issue 7 - Jul 2006
Volume 6, Issue 6 - Jun 2006
Volume 6, Issue 5 - May 2006
Volume 6, Issue 4 - Apr 2006
Volume 6, Issue 3 - Mar 2006
Volume 6, Issue 2 - Feb 2006
Volume 6, Issue 1 - Jan 2006
Selecting the target year
Priority Control Using Cell and Windows Counter in ATM Switchs
Kim Byun-Gon ; Seo Hae-Young ; Jang Ting-Ting ; Park Ki-Hong ; Han Cheol-Min ; Kim Nam-Hee ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 1~11
With the improvement of information telecommunication technology, the various service in broadband integrated services digital networks have a wide range of delay, delay jitter and cell loss probability requirements according to traffic specification. Therefore, the design of appropriate control schemes that can satisfy the cell loss, delay requirements with various traffic specification for B-ISDN is an extremely important challenging problem. In this paper, we propose a priority control scheme using a window counter and a cell counter per each type of class. In the proposed priority control scheme, for satisfying required service quality, we performed the priority control scheme using the delay/loss factors obtained by comparing window counter with cell counter. The performance of proposed control scheme is estimated by computer simulation. In the results of simulation, we verified that the proposed method satisfied per class requirements as the results showed that cell loss probability has a order of video, data, voice and delay time has a order of video, voice and data.
Deep Analysis of Question for Question Answering System
Shin Seung-Eun ; Seo Young-Hoon ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 12~19
In this paper, we describe a deep analysis of question for question answering system. It is difficult to offer the correct answer because general question answering systems do not analyze the semantic of user's natural language question. We analyze user's question semantically and extract semantic features using the semantic feature extraction grammar and characteristics of natural language question. They are represented as semantic features and grammatical morphemes that consider semantic and syntactic structure of user's questions. We evaluated our approach using 100 questions whose answer type is a person in the web. We showed that a deep analysis of questions which are comparatively short but enough to mean can analysis the user's intention and extract semantic features.
Construction of Efficient Semantic Net and Component Retrieval in Case-Based Reuse
Han Jung-Soo ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 20~27
In this paper we constructed semantic net that can efficiently conform retrieval and reuse of object-oriented source code. In order that initial relevance of semantic net was constructed using thesaurus to represent concept of object-oriented inheritance between each node. Also we made up for the weak points in spreading activation method that use to activate node and line of semantic net and to impulse activation value. Therefore we proposed the method to enhance retrieval time and to keep the quality of spreading activation.
Approaches to Improve Korean Advanced Network Based on the Analysis of Global Research and Education Networks
Joo Bok-Gyu ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 28~37
In the last decades, inter-networking technologies advanced more rapidly than any other field. Today, the Internet is one of the most important infrastructure to society as becoming an indispensible tool of people and companies. During mid-1990's, developed countries recognized the advanced network as a basic infrastructure for the future science and technology development. They developed national research and education networks for the development of future science and network technology. In this paper, we made a comprehensive review of global research and education network developments. We also made analysis of Korea's activities on advanced network comparing with those of developed nations, then suggested approaches to improve Korean advanced networks.
Dual-Level LVDS Circuit with Common Mode Bias Compensation Technique for LCD Driver ICs
Kim Doo-Hwan ; Kim Ki-Sun ; Cho Kyoung-Rok ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 38~45
A dual-level low voltage differential signalling (DLVDS) circuit is proposed aiming at reducing transmission lines for a LCD driver IC. We apply two data to the proposed DLVDS circuit as inputs. Then, the transmitter converts two inputs to two kinds of fully differential signals. In this circuit, two transmission lines are sufficient to transfer two inputs while keeping the LVDS feature. However, the circuit has a common mode bias fluctuation due to difference of the input bias and the reference bias. We compensate the common mode bias fluctuation using a feedback circuit of the current source bias. The receiver recovers the original input data through a level decoding circuit. We fabricated the proposed circuit using
CMOS technology. The simulation results of proposed circuit shows 1-Gbps/2-line data rate and 35mW power consumption at 2.5V supply voltage, respectively.
Performance Comparison of Mobility Technologies for Next Generation Network
Yu Myong-Ju ; Lee Jong-Min ; Oh Yu-Rim ; Choi Seong-Gon ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 46~54
Various schemes for mobility are currently studied in ITU-T, 3GPP, IETF, and so on. Mobility support in NGN for seamless service is necessarily required. Currently proposed mechanisms are MIPV6,0, Q.MMF, and IMS. However the performance comparison of all existing schemes is not examined as yet. That is, the existing methods need to be compared according to each performance parameter. So, in this paper, we investigate and compare the performances of MIPv6,0, Q.MMF, IMS to location registration. In addition, this paper presents the performance comparison of handover latency times. For this, we use NS-2 simulator. As a result of analysis, Q.MMF shown the best performance as it is measured the minimum time and cost. And it has low handover latency time in comparison with other mechanisms.
Context-based Data Modeling for Ubiquitous Computing Information Management
Kim Seok-Soo ; Song Jae-Gu ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 55~62
After the advent of the Ubiquitous environment, the movement for effective information management is progressing vividly. According to this situation, this paper conducts individualized context structure for individual service and also suggests 5W1H and HFC modeling which apply using priority to manage vast context data. Thus this modeling will function as a base model to embody Ubiquitous environment and offer context based service.
Implementation of an ASP Upload Component to Comply with RFC 1867
Hwang Hyun-Ju ; Kang Koo-Hong ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 63~74
Recently many ASP applications have been released which enable them to accept, save and manipulate files uploaded with a web browser. The files are uploaded via an HTML POST form using RFC 1867 In particular, the file transfer via the HTTP port is getting more important because of the current Internet security issues. In this paper, we implement a form-based ASP upload component and disclose explicitly most of the main codes. That is, the open source might be helpful to develop the new ASP applications including file upload function in the future. We also show the upload time and CPU usage time of the proposed upload component and compare with the well-known commercial ones, showing the performance metrics of the proposed component are comparable to those of commercial ones.
A Study of Factors Influencing on Receivers' Communication Style in Internet Shopping Mall Contents
Chun Myung-Hwan ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 75~84
The internet has the capabilities of supporting and facilitating several forms of consumer interaction including one-to-one, one to many, or many-to-many interactions. Especially, previous studies revealed that the Online Word-of-Mouth communication is widely used as a source of customer's information seeking and purchase decision making. Even with this importance of the Online Word-of-Mouth communication on internet, few research has systematically addressed the issue. This study investigates the effect of interpersonal communication on consumers' information search activities and develops a model that depicts the key antecedents and mediating variables of interpersonal communication in internet shopping environment. The results are as follows: First, choice uncertainty, perceived risk, and knowledge uncertainty play an important role for perceived usefulness. Second, perceived usefulness has directly affected interactive communication of consumers' communication style. Thus, it is essential for internet companies to find ways to encourage their customers to engage in word-of-mouth communication.
A Role-play base PBL(Problem-Based Learning) for Information Security Learning
Lee Byong-Rok ; Ji Hong-Il ; Shin Dong-Hwa ; Cho Yong-Hwan ; Lee Jun-Hee ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 85~92
Problem-Based Learning(PBL) is one of constructionism's model which is learner-centered learning. In this paper, a role-play base PBL using character is proposed to study importance of information security. It is different from the other PBL models in that it reflects the characteristics of learners, learning task. And it is learning support system which the learners preside their own learning activities using Internet and mobile devices. By experimental result showed that proposed method was more effective than traditional teacher-oriented teaching method about information security in self-directed learning, cooperative learning, contents-making and attraction.
Developing CEDA Model for Internet-based Class
Cho Eun-Soon ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 93~101
The purpose of this study is to design internet CEDA(Cross Examination Debate Association) debating model for the internet-based learning. Comparing to open discussion model that is widely spreaded in regular classes, the CEDA model can enhance learner's thinking skills, logicality, analytic skills, and judgement ability. In the first study, 196 students were provided the specific CEDA model guideline and participated debate activities through the internet. The results of the students' debate were analyzed based on the evaluation criteria. The results showed that the students' evaluation scores were high overall. They favored the CEDA model over the open discussion model, and showed positive attitudes and perceptions on the CEDA internet debate activity. In the second study, another 200 students were participated in two different tutor supporting CEDA debating groups, one is advanced tutor strategy group and the other is general tutor strategy group. The results showed that the advanced tutor supporting group had significantly high scores on the cross examination and providing evidence on debating. This study finally suggests the CEDA internet model for general use. In conclusion, this study also suggests the next steps to elaborate the CEDA internet model not only for the university settings, but also for general school settings. The user manuals should be developed to assist instructors, students, and tutors to guide better debate activities through the internet CEDA class. Also further research should be conducted to provide various debate models and applications for the variety of learning environments, and so the schools to use the CEDA model more widely in the internet classes.
An Empirical Study on Students' Problems of Internet-based Distance Learning
Nam Sang-Zo ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 102~107
While Internet-based distance learning has proliferated, its educational effectiveness remains controversial. As such, investigation into the problems of Internet-based distance learning is important and fundamental for an assessment of its educational effectiveness. In this study, problems of Internet-based distance learning are grouped into four categories, environmental problems, student problems, course design problems and operational problems. Based on survey data from 606 distance learning participants, perceptional and relative seriousness of problems are analysed. The results indicate that perceptional seriousness of all the problems is not statistically important. However, the findings indicate that the relative seriousness of self willingness among student problems and cheating within operational problems is most remarkable. In contrast, the relative seriousness of traditionally recognized problems such as H/W availability and network speed among environmental problems is least remarkable. An analysis of demographic differences such as sex, employment and age in terms of seriousness of problem is also performed. The results reveal the existence of statistically significant differences according to sex, employment, and age difference with regard to seriousness of problems.
Development of a Reflective Collaborative Work System for e-Learning Contents Development
Cho Eun-Soon ; Kim In-Sook ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 108~115
e-Learning contents are composed of compounding multimedia data. It requires many professionals in contents development stage. The process of e-learning contents development can be seen as a collaborative work. In the perspective of a collaborative work process, the whole process of e-learning contents development would be regarded as collaborative work process for each participant as well as for whole group members. Most of collaborative works in contents development field are widely distributed. Members of work groups require workspaces for sharing information and communicating each other. In addition to workspaces, it also needs to support collaborative reflection such as planning for collaborative work and monitoring for work process. This paper is intended to develop the reflective collaborative work system for e-Learning contents development in order to support the systemic process of e-learning contents development. The reflective collaborative work system is composed of four supportive parts: work flow management, personal workspace, collaborative workspace, and collaborative reflection.
A U-CoMM System for Cooperative Learning
Lee Byong-Rok ; Ji Hong-Il ; Shin Dong-Hwa ; Cho Yong-Hwan ; Lee Jun-Hee ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 116~124
Mentoring is defined as a sustained relationship between a mentor and a mentee. Through continued involvement, the mentor offers support, guidance, and assistance as the mentee faces new challenges, or works to correct earlier problems. A mentoring for cooperative learning has many merits including higher order thinking, collaborative competencies, socialization and development. In this paper, a U(Ubiquitous)-CoMM(Community of mentor & mentee) system was supposed to design an instructional learning strategy using cyber community of mentor & mentee in a ubiquitous environment. The proposed system provides participants with campus mentoring program in which they share their experience and expertise. By experimental result showed that the proposed system is effect in education about cooperative learning than existing system.
HEEAS: On the Implementation and an Animation Algorithm of an Emotional Expression
Kim Sang-Kil ; Min Yong-Sik ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 125~134
The purpose of this paper is constructed a HEEAAS(Human Emotional Expression Animaion System), which is an animation system to show both the face and the body motion from the inputted voice about just 4 types of emotions such as fear, dislike, surprise and normal. To implement our paper, we chose the korean young man in his twenties who was to show appropriate emotions the most correctly. Also, we have focused on reducing the processing time about making the real animation in making both face and body codes of emotions from the inputted voice signal. That is, we can reduce the search time to use the binary search technique from the face and body motion databases, Throughout the experiment, we have a 99.9% accuracy of the real emotional expression in the cartoon animation.
The Study on the Effects of Elasticity on the Animation Characters
Kyung Byung-Pyo ; Ryu Seuc-Ho ; Lee Nam-Kook ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 135~142
An animation character can be applied an Elasticity principle to strengthen an action and expression. That principle is called as Squash & Stretch in animation. The application of this principle gives the illusion of weight and volume to an animation character, and makes it possible that an animation action be the smooth and soft by escaping from the stiffness and rigidity. If an action of human or object on animation is expressed like a real world, it seems to be unnatural. Any action without Squash & Stretch will look rigid, uninteresting and not alive. It can be applied to movement of all objects, characters' actions, dialogues and facial expressions with a basic rule of mass, volume and gravity. Havier characters squash and stretch more than thinner ones. Any action will not be well expressed without this principle. To be a good animation movement, it should be widely applied in all type of animation, not only 2D animation.
Dream and Games - A Psycoanalytical Appoach to Computer Games
Park Tae-Soon ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 143~153
Psychoanalytical film theory promoted by Metz supplied theoritical base in analyzing the effects of mass culture to subject. This theory may be also applied to computer games, so that we would promote studies in depth about game critics and game culture. In this article, first inspected the theories of Freud and Lacan and then examined the psychoanalytical film theory by Metz and Baudry. Computer games analyzed by the frame of artificial regression, first identification and concealment of marks of enunciation. As a result, computer games appeared that deeply effect to the subject similarity cinema.
Research on the Animation Storyboard Production Based on Storytelling
Kim Ji-Soo ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 154~162
The weight of the story in the field of animation that is developed in digital and network is increasing gradually. It occurs not only in animation but several related fields. It shows the potential and needs of animation education based on the story. In this research several literary studies were conducted to identify essential factors of the story-telling in the animation story board production. To visualize the contents in details for the first time, we tried to find the intention of the producer of the animation story board and the work's depth by researching the role and production process in animation story board which applies all of the productions. The important visual factors in producing the animation will be the subjects of the research in near future, and the studies as the important communication art will be carried out by developing the visual and creativeness of the expressions.
A Study of Pre-requirements to Adopt and Apply Information Technologies to the Hotel Industry
Chung Hyun-Young ;
The Journal of the Korea Contents Association, volume 6, issue 3, 2006, Pages 163~173
Hospitality industry has experienced rapid changes since it adopted information technologies. The changes provides the hospitality industry with opportunities of a favorable position in competition as well as problems to solve. In this study the influences of IT on the hospitality industry and strategies to cope with are discussed.