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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 8, Issue 12 - Dec 2008
Volume 8, Issue 11 - Nov 2008
Volume 8, Issue 10 - Oct 2008
Volume 8, Issue 9 - Sep 2008
Volume 8, Issue 8 - Aug 2008
Volume 8, Issue 7 - Jul 2008
Volume 8, Issue 6 - Jun 2008
Volume 8, Issue 5 - May 2008
Volume 8, Issue 4 - Apr 2008
Volume 8, Issue 3 - Mar 2008
Volume 8, Issue 2 - Feb 2008
Volume 8, Issue 1 - Jan 2008
Selecting the target year
Efficient Distributed Conference Architecture in SIP Environment
Jo, Hyun-Gyu ; Lee, Ki-Soo ; Jang, Choon-Seo ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 1~8
DOI : 10.5392/JKCA.2008.8.5.001
The centralized conference architecture, one of the conference architectures in SIP(Session Initiation Protocol) environment, is widely used as it has the advantage of conference management and control. However it has been limited in scalability. Therefore we have proposed an efficient distributed conference architecture to improve scalability of centralized conference model. In our architecture, if the number of conference participants exceeds the predefined maximum number, a new conference server is added to the conference dynamically. In this case, the focus of existing server acts as primary focus and the focus of added server acts as secondary focus, and dynamic reallocation of participants between servers is done to equally divide the loads. This process is repeated as the number of conference participants increases. For this behavior, we have proposed procedure of adding the conference server, SIP call signal exchange, signaling procedure for RTP(Real Time Transport Protocol) sessions between conference servers, and procedure of conference event package between conference servers. The performance of our proposed model is evaluated by experiments.
Detection Mechanism of Attacking Web Service DoS using Self-Organizing Map
Lee, Hyung-Woo ; Seo, Jong-Won ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 9~18
DOI : 10.5392/JKCA.2008.8.5.009
Web-services have originally been devised to share information as open services. In connection with it, hacking incidents have surged. Currently, Web-log analysis plays a crucial clue role in detecting Web-hacking. A growing number of cases are really related to perceiving and improving the weakness of Web-services based on Web-log analysis. Such as this, Web-log analysis plays a central role in finding out problems that Web has. Hence, Our research thesis suggests Web-DoS-hacking detective technique In the process of detecting such problems through SOM algorithm, the emergence frequency of BMU(Best Matching Unit) was studied, assuming the unit with the highest emergence frequency, as abnormal, and the problem- detection technique was recommended through the comparison of what`s called BMU as input data.
Implementation of a WIPI-based Intelligent Home Service Robot
Kim, Jin-Hwan ; Shin, Dong-Suk ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 19~28
DOI : 10.5392/JKCA.2008.8.5.019
In this paper, we implemented an intelligent home service robot system which alerts users to danger by wireless internet platforms for interoperability(WIPI) of a cellular phone. This paper discusses the three parts of the system: robot, middleware and mobile system. First, the robot consists of a gas sensor, a fire detector, ultrasonic sensors, motors, a camera and a Bluetooth module. The robot perceives various danger circumstances. Second, the middleware connects the robot and the mobile system. It monitors the robot and sends emergency notification SMS message to the user`s cellular phone if in danger. Third, the mobile system sends commands which control the robot using TCP/IP protocol. The proposed scheme is to control the sensors of the robot part through Atmega 128 processor, and the robot and middleware parts will be installed in the household, and will be controled by mobile part from the outside.
Motion Vector Recovery Scheme for H.264/AVC
Son, Nam-Rye ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 29~37
DOI : 10.5392/JKCA.2008.8.5.029
To transmit video bit stream over low bandwidth such as wireless channel, high compression algorithm like H.264 codec is exploited. In transmitting high compressed video bit-stream over low bandwidth, packet loss causes severe degradation in image quality. In this paper, a new algorithm for recovery of missing or erroneous motion vector is proposed. Considering that the missing or erroneous motion vectors in blocks are closely correlated with those of neighboring blocks. Motion vector of neighboring blocks are clustered according to average linkage algorithm clustering and a representative value for each cluster is determined to obtain the candidate motion vector sets. As a result, simulation results show that the proposed method dramatically improves processing time compared to existing H.264/AVC. Also the proposed method is similar to existing H.264/AVC in terms of visual quality.
Human Sensibility Ergonomic Apparel Coordination Supporting Method using Genetic Algorithm
Chung, Kyung-Yong ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 38~43
DOI : 10.5392/JKCA.2008.8.5.038
As the sensibility engineering has become a mainstream information tool, searching answers has become crucial as well. Because the collaborative filtering refers to partial users information who have the similar preference, it tends to ignore the rest. In this paper, we propose the human sensibility ergonomic apparel coordination supporting method using the genetic algorithm. This proposed method calculates evaluation values using fitness function based the genetic algorithm, and gathers through a-cut. To estimate the performance, the suggested method is compared with the existing methods in the questionnaire dataset. The results have shown that the proposed method significantly outperforms the accuracy than the previous methods.
Conceptual Pattern Matching of Time Series Data using Hidden Markov Model
Cho, Young-Hee ; Jeon, Jin-Ho ; Lee, Gye-Sung ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 44~51
DOI : 10.5392/JKCA.2008.8.5.044
Pattern matching and pattern searching in time series data have been active issues in a number of disciplines. This paper suggests a novel pattern matching technology which can be used in the field of stock market analysis as well as in forecasting stock market trend. First, we define conceptual patterns, and extract data forming each pattern from given time series, and then generate learning model using Hidden Markov Model. The results show that the context-based pattern matching makes the matching more accountable and the method would be effectively used in real world applications. This is because the pattern for new data sequence carries not only the matching itself but also a given context in which the data implies.
Time Slot Assignment Algorithm with Graph Coloring
Kwon, Bo-Seob ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 52~60
DOI : 10.5392/JKCA.2008.8.5.052
A simple Time Division Multiplex(TDM) switching system which has been widely in satellite networks provides any size of bandwidth for a number of low bandwidth subscribers by allocating proper number of time slots in a frame. In this paper, we propose a new approach based on graph coloring model for efficient time slot assignment algorithm in contrast to network flow model in previous works. When the frame length of an initial matrix of time slot requests is 2`s power, this matrix is divided into two matrices of time slot requests using binary divide and conquer method based on the graph coloring model. This process is continued until resulting matrices of time slot requests are of length one. While the most efficient algorithm proposed in the literature has time complexity of
, the time complexity of the proposed algorithm is
, where N is the number of input/output links and L is the number of time slot alloted to each link in the frame.
Analysis and Verification of Functional Requirements for GLORY using UML
Kung, Sang-Hwan ; Lee, Jae-Ki ; NamGoong, Han ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 61~71
DOI : 10.5392/JKCA.2008.8.5.061
It is often claimed that the descriptive way of documentation is insufficient to define software requirements as being unambiguous. This is caused by not only the difference of knowledge and understanding of the stakeholder as to system but also the difference in the way of documentation like method of representation as well as depth of description. The study explains the process and results of applying a diagraming tool like UML to improve the requirements of GLORY(GLObal Resource management sYstem) initially defined in descriptive way. Especially, the result shows that the requirements are more accurately improved with the good hierarchies and well-leveled functionalities, with the help of diagraming tool, expecting easy maintenance of requirements and prevention of omission of requirements.
Performance Analysis of Cache and Internal Memory of a High Performance DSP for an Optimal Implementation of Motion Picture Encoder
Lim, Se-Hun ; Chung, Sun-Tae ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 72~81
DOI : 10.5392/JKCA.2008.8.5.072
High Performance DSP usually supports cache and internal memory. For an optimal implementation of a multimedia stream application on such a high performance DSP, one needs to utilize the cache and internal memory efficiently. In this paper, we investigate performance analysis of cache, and internal memory configuration and placement necessary to achieve an optimal implementation of multimedia stream applications like motion picture encoder on high performance DSP, TMS320C6000 series, and propose strategies to improve performance for cache and internal memory placement. From the results of analysis and experiments, it is verified that 2-way L2 cache configuration with the remaining memory configured as internal memory shows relatively good performance. Also, it is shown that L1P cache hit rate is enhanced when frequently called routines and routines having caller-callee relationships with them are continuously placed in the internal memory and that L1D cache hit rate is enhanced by the simple change of the data size. The results in the paper are expected to contribute to the optimal implementation of multimedia stream applications on high performance DSPs.
Development of Quality Evaluation Model for Software based on SOA
Lee, Chul ; Yang, Hae-Sool ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 82~93
DOI : 10.5392/JKCA.2008.8.5.082
Nowadays, as the importance of SOA-based software is recognized, the market of SOA-based software is getting bigger. In response to this, the requirements about high reliability and quality SOA-based software is getting increased. In this research, we clearly suggested the evaluation method by giving a specific evaluation example to evaluate the quality of SOA-based software. It is expected to raise the objectivity and the utilization by inducing the quality improvement from this research.
Mesh Segmentation With Geodesic Means Clustering of Sharp Vertices
Park, Young-Jin ; Park, Chan ; Li, Wei ; Ha, Jong-Sung ; Yoo, Kwan-Hee ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 94~103
DOI : 10.5392/JKCA.2008.8.5.094
In this paper, we adapt the
-means clustering technique to segmenting a given 3D mesh. In order to avoid the locally minimal convergence and speed up the computing time, first we extract sharp vertices from the mesh by analysing its curvature and convexity that respectively reflect the local and global geometric characteristics from the viewpoint of cognitive science. Next the sharp vertices are partitioned into
clusters by iterated converging with the
-means clustering method based on the geodesic distance instead of the Euclidean distance between each pair of the sharp vertices. For obtaining the effective result of
-means clustering method, it is crucial to assign an initial value to
appropriately. Hence, we automatically compute a reasonable number of clusters as an initial value of
. Finally the mesh segmentation is completed by merging other vertices except the sharp vertices into the nearest cluster by geodesic distance.
u-Mart Network using RFID/USN based Movement-Reader Device for Effective Shopping of Customer
Diao, Jianhua ; Yang, Jin-Ho ; Ahn, Byeong-Tae ; Kang, Hyun-Syug ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 104~112
DOI : 10.5392/JKCA.2008.8.5.104
RFID/USN is considered important basic infra of ubiquitous community and tried practical adaption through various research. Specially, there is during researcher progresses for stock and state management of logistics to let you get at u-mart systems. It discern thing from warehouse to deliver as adhere RFID tag of palette in keeping unit of article and construct form of thing to analyze information of environment status using sence module based on function of wireless communication. in the paper, propose composition of customer satisfaction system using RFID chip in u-Mart status management system based on RFID/USN and according to analysis specific information of commodity, propose movement reader device to offer real-time information from customer. And it presents the improvement program for the provision of product information which is appropriate uses the RFID chip and the provision of control information in the customer who is a core of consuming.
Integrated Communication Design Strategies for the Revised Marketing Environment
Yang, Jae-Bum ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 113~121
DOI : 10.5392/JKCA.2008.8.5.113
Researcher tried to argue the possibility of application of visual communication design adapting the marketing environment change on this paper. What is ICD (Integrated Communication Design)? This is a new attempt to treat these common marketing methods, such as, C, I, B, I, TV commercials, newspaper commercials, posters, brochures, DM, package designing, POP, outdoor visual information, web sites etc, as a whole. And no longer treat them as separate pieces as we were doing previously. So I started this research with positive analysis which already has been theoretically discussed based on the documents and researches on the same subject. Through this attempt I tried to examine the possibility of application of ICD. Conclusively, I developed and suggest named the ICD model, by which we could explain the current marketing communication design effort more holistically then ever.
Web-based Cyber Exhibition Development Model Proposal - Focused on the Case of `Lewis&Clark` Cyber Exhibition -
Kim, Hee-Kyung ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 123~133
DOI : 10.5392/JKCA.2008.8.5.123
This dissertation is a web-based cyber exhibition website and a clear difference between the general framework of the development breaks out, the cyber exhibition framework can be a model for the purpose of the proposal. The basic elements that comprise the exhibition model is archives layer, exhibit layer, and experience layer for the three-layer planed. In fact, the model has been applied throughout the analysis of cases with the application of the model presented, while others are considering goal direction also suggests the development of a cyber exhibition. If you take advantage of the cyber model of development brilliant display of the content rather than technology-driven `material and value+media and CT` to the convergence of content through their own cyber exhibition area can expect to be recognized.
Analysis on the Current Cityscapes in Korea and Their Problems
Song, Min-Jung ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 134~144
DOI : 10.5392/JKCA.2008.8.5.134
A city is the center of all the economic activities, politics, administration and creation of cultures, and it is also a social community. It is also an environment in which human beings live and act, and thus, psychological and emotional pleasure are greatly demanded. Facilities of cities, buildings and harmonizing each and every structures with the environment sets up the image and the identity of a city because they are the most important visual structuring elements in cityscapes. Currently, most of the cities in Korea including Seoul, are in discordance with their natural environment because of all different sorts of buildings and signboards are jumbled up close together. The traditional, local colors have disappeared form those cities and all cities look the same. It is hard to find traditional beauty and identities of the cities in Korea, and the Korean cities are not even close to the threshold of other foreign cities. In order to solve these problems, there is a dire need of improving the modification of cityscapes in the long run. This research aims to understand the current abstruse situation Korean cities are in, analyze their problems and describe actual methods of improving those cities so that they can have a more ordered and organized structures. Also, this research should be used as a data of future researches based on citiscapes.
Comparing User Experience-based Design and Minimalism
Jo, Dong-Hee ; Lim, Byung-Woo ; Cho, Yong-Jae ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 145~154
DOI : 10.5392/JKCA.2008.8.5.145
Minimalism, which started with the subtle distinction between the end of modernism and beginning of post-modernism, was not limited to the fine arts but also spread through architecture, fashion, and the rest of the design industries. this historical study is considered a logical, user experience-based design process, the latest issue derived from the collision between minimalism and the digital environment is not limited to practical industrial design processes, but also their theoretical study. the results show that user experience-based design process and minimalism share many of the same qualities. based on these similarities, minimalism and user experience-based design process can be grouped together both academically and theoretically for establishing a future academic template for the digital designing process.
Sportive Kiosk Interface Design using Tangible Interaction
Lim, Byung-Woo ; Jo, Dong-Hee ; Cho, Yong-Jae ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 155~164
DOI : 10.5392/JKCA.2008.8.5.155
Kiosk is an unmanned information system arranged in public places or commercial spaces so that a user may utilize information conveniently. Unlike a personal computer, it targets varied users` brackets, so we have to consider a user`s characteristic in designing Kiosk Interface. However, in reality, the Kiosks of public places like subway stations are of Interface Design without considering users and become almost useless with serviceability falling. In this study, we attempt to point out such problems and suggest the concept as to the Interface Design in the public places for a more positive promotion method. For this purpose, we are about to look into the concept of Tangible Interaction and Interspace and the recreation experienced in the process of interaction between a human and a computer and study the sportive Kiosk Interface Design in the Interspace using the principle of the Tangible Interaction. For the conceptual Model in this study, we referred to ARTCOM(ART+COM) Project.
Analysis on Character Designs of Universities
Kwon, Yun-Kyoung ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 165~175
DOI : 10.5392/JKCA.2008.8.5.165
With the beginning of the 21st century, the rapid change of the environment of education makes the universities eager to develop a new image of themselves (i.e. image marketing). Character, one of the image marketing items, plays an important role for improving the image of universities by connecting the inner members more firmly, preserving the tradition of the university and being used as an advertising instrument. Considering these important roles, universities are focusing on designing character in order to express their identity and image efficiently. In this study, I surveyed the characters of universities and examined that these characters are reflecting the image of their universities, working on unity and harmony of the members and establishing the identity of each university properly. At the same time, I analyzed the relation between characters and symbols of universities. I expect that familiar and identified characters can be an essential element in improving the image of universities by giving visual advertising effects and informing the image of universities distinctively.
Contents and Channel Operations for Over-the-Air Digital Broadcasting
Ha, Ju-Yong ; Ryu, Seung-Kwan ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 176~183
DOI : 10.5392/JKCA.2008.8.5.176
The transition to digital television is a massive and complex undertaking, affecting virtually every segment of the television industry and all viewers who watch television. In this respect, consequences of digital conversion of broadcasting and its related industries are so tremendous that countermeasure establishment for activation of digital broadcasting and programming industry is required. This paper explores the current situation of digital broadcasting in terms of the channel operation and contents focusing on the cases of the U.S. and U.K. In doing so, this paper presents reasonable directions and policy suggestions that should be resolved to advance Korean digital broadcasting.
Vernacular of Tradition Korean Jewelry - This study is Focused on a Ceramic Accessories Development of Baek-Jae Muryong Roayl Tomb-
Kim, Sung-Min ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 184~191
DOI : 10.5392/JKCA.2008.8.5.184
This study is focused on a relic of "Baek-Jae Muryong Roayl Tomb", as an inheritance, and craft work of a modern accessories Art. Based on a conceptual design and component of relic ceramic accessories from "Baek-Jae Muryong Roayl Tomb" is one of our cultural heritages, a creative work is to present a several kinds of applicable ceramic accessories in our real life. Accordance of valuing three factors as above, seeking the productivity idea from traditional cultural goods with the originality has a potential to expand to global market, because the regional representative cultural relic and remains goods of Gong-Ju, Chungnam can be developed as cultural good of regional, and cultural indigenous product. In conclusion, a property matter of soil and diversity of visual presentation that is corresponding to recognizable design particular idea.
Measuring Relative Efficiency of Korean Life Insurance Companies Employing DEA/Window Model
Lee, Hyung-Suk ; Kim, Ki-Seog ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 192~206
DOI : 10.5392/JKCA.2008.8.5.192
With many changes such as the increase in telemarketing, internet marketing and enforcement of bancassurance, the Korean life insurance companies have undergone a startling transformation. The purpose of this paper is to measure and analyse the static/dynamic efficiency of Korean life insurance companies employing Data Envelopment Analysis(DEA). As the result of the static efficiency analysis, we provide CCR, BCC and scale efficiency, return to scale, and reference set of Korean life insurance companies in 2004. And we also describe about the trend and stability of their efficiency for 7 years(1998-2004) in the dynamic efficiency analysis.
Relation with an Factor Forming Politic Administration and Awareness Level - Focus on High School Students in Dea-Jeon -
Choi, Ho-Taek ; Ryu, Sang-Il ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 207~214
DOI : 10.5392/JKCA.2008.8.5.207
This research analysis politic knowledge, politic awareness and politic socialization medium which influenced forming politic awareness for high school students. This purpose is that we find politic awareness of teenagers and how we teach politic education for teenagers effectively. After analysis, we found that awareness formed through home, school, colleague group and mess media influence teenagers to make their important factor of forming politic and administration and awareness level of politic and administration.
Effects of Tax Investigators` Pride, External Image, and Organization Identification on Organizational Commitment
Hong, Soon-Bok ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 215~223
DOI : 10.5392/JKCA.2008.8.5.215
This study is an empirical research on what effects public tax officers` pride, external image, and organization identification as tax specialists have on their organizational commitment. The results of the verification showed that their organizational commitment gets deeper as their satisfaction about pride, external image, and organization identification get greater. In order to meet the public interest in taxation and the demand of the time with positive attitudes and facilitate the functions of the taxation administration, public tax officers` organizational commitment should be intensified by increasing their pride as tax specialists, enhancing external images of the taxation administration, making substantial and realistic efforts, and letting public tax officers have organization identification.
Improving the Disaster Management Service in the Demander-Centered Approach
Yoo, Hyun-Jung ; Lee, Jae-Eun ; Rho, Jin-Chul ; Kim, Gyum-Hun ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 224~236
DOI : 10.5392/JKCA.2008.8.5.224
To enhance the quality of disaster management service, the paradigm shift is necessary from the supplier-centered approach to demander-centered approach. In this paper, demander means all the policy actors that participate in the field of disaster such as central & local governments, emergency rescue systems, civil volunteer groups as well as the disaster victims. In this study, we analyze the current problems of disaster management service in demanders` point of view through in-depth interviews and then address suggestions based on each entity`s recognitions and understandings related. The results are as follows: 1) Lack of systemicity in the current disaster management service. 2) The mutual distrust and understanding among the policy actors participating in the disaster site. 3) In the field of disaster, not only the disaster victims but also people related to entities are deprived of a stable living due to a long period of rescue activities. Furthermore, the conflicts derived from allocations of the aid fund can bring about the collapse of local community involved in disaster. 4) The life of the disaster victims that have been damaged mentally and financially is earnestly necessary to be conveniently served by disaster management service.
Introducing on Automatic Check-Out and Bookshelf System of Public Libraries by Japanese Case Study
Jung, Jin-Ju ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 237~245
DOI : 10.5392/JKCA.2008.8.5.237
Characteristics of Japanese public library recently has been changed to mutual networking between libraries, complex use of data, and long stay of users. Such change requires new service and contents. Also, in Korea, it is circumstance that interest of library`s contents rise politically. And under government leading by BTL project, various libraries are increasing all over the country fast such as public library, extension of existing school library and the small library, etc. In this research, space composition of library, automatic check-out & bookshelf system, and mutual networking between libraries was analyzed by selected 3 libraries (central library of Chiba city, Tomisato and Ichigawa city library) of Chiba area and find applicable contents to our library system.
Efficiently Development Plan from the User`s Need Analysis of the Army Tactical C4I(ATCIS) System
Park, Chang-Woon ; Yang, Hae-Sool ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 246~259
DOI : 10.5392/JKCA.2008.8.5.246
This study was to minimize the trial and error in the primary step of the C4I system(ATCIS) of the each army corps on the front line, and test the economy and efficiency was tested by reviewing related papers and the system characteristics of other countries. The relationship was researched by analyzing the collected survey data and survey data related to the user`s requirement level such as the army standards, that is, commonality, timeliness, simplification, automaticity, field availability and viability, multi-stage security and interoperability, unification. The result showed that the C4I system was efficiently operated through the system reliability for the specification of the system and operation manual, maneuverability and security, adaptability of the war field and system support and management, and good education and training about system operation, and less system maintenance and supplementary element. As a result, the development plan confirmed that the continuous operator education and the construction of the maintenance, and the upgrade digitalization(C4ISR+D) with the korean characteristics based on IT of network systems, and system development of the measurement model of the operator performance must be continuously supplemented in the near future.
e-Portfolio Design and Application Education Combining the Learning and Evaluation
Kim, Sang-Su ; Kim, Young-Hak ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 260~267
DOI : 10.5392/JKCA.2008.8.5.260
The portfolio provides a method which can properly evaluate the student`s long term period of learning and growth, and this allows students to have practical learning through self-reflection. However, following the realities of portfolio`s operation, the portfolio is being operated formally just once only for the evaluation due to the difficulty of long custody and its time-consuming process. In this paper, after grasping the overall process of learning and the result of growth, we design the `e-portfolio` which combines both learning and evaluation in order to minimize the physical constraint factors along with operating portfolio. After operating our newly designed `e-portfolio` based on blog in order to verify it`s effect, we found the meaningful changes in student`s academic achievement and the positive possibility of its application to teachers. Therefore, with the operation of our suggested `e-portfolio`, we are expecting progressed and integrated portfolio education which combines the function of the learning and the evaluation.
Design and Development of a Language-based Mathematics-Educational Authoring Tool using Cooperative Work among Learners
Kim, Yong-Beom ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 268~275
DOI : 10.5392/JKCA.2008.8.5.268
Providing appropriate and cooperative work among learners is an essential factor of a successful educational authoring system. Although from the viewpoint of beginning authors, many authoring functions are employed in existing authoring tool, there has been little research to solve authoring difficulties by companion`s assist and to keep pace with learning. Therefore, in this paper, we designed and developed a educational authoring tool using mathematical language and cooperative work among learners, verified the validity. The authoring tool proposed has key features to hide authoring handicaps and keep pace with learning and cooperate with each other by using networked and language-based authoring tool.
Development of an Adaptive e-Learning System for Engineering Mathematics using Computer Algebra and Bayesian Inference Network
Park, Hong-Joon ; Jun, Young-Cook ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 276~286
DOI : 10.5392/JKCA.2008.8.5.276
In this paper, we introduce an adaptive e-Learning system for engineering mathematics which is based on computer algebra system (Mathematica) and on-line authoring environment. The system provides an assessment tool for individual diagnosis using Bayesian inference network. Using this system, an instructor can easily develop mathematical web contents via web interface. Examples of such content development are illustrated in the area of linear algebra, differential equation and discrete mathematics. The diagnostic module traces a student`s knowledge level based on statistical inference using the conditional probability and Bayesian updating algorithm via Netica. As part of formative evaluation, we brought this system into real university settings and analyzed students` feedback using survey.
Effects of Recognition of Elderly Education on Provision for Old Age among Middle-Aged and Aged People in Korea
Hong, Seok-Tae ; Yang, Hae-Sool ;
The Journal of the Korea Contents Association, volume 8, issue 5, 2008, Pages 287~299
DOI : 10.5392/JKCA.2008.8.5.287
The purpose of this study is to analyze the statistical data to get the government to have positive recognition of education for middle-aged and aged people about provision for old age after retirement and present a model of policy direction of realistic elderly education for middle-aged and aged people and an ideal program for middle-aged and aged people in Korea. Such an empirical research obtained the following results. First, as for effects of recognition of the need of elderly education and the desire to participate in elderly education on provision for retirement, the need of elderly education and the desire to participate in elderly education were found to have effects. Second, as for effects of the level of retirement expectation on provision for retirement, new departure, career completion, and continuous expectation were found to have effects. Third, as for mediating effects of retirement expectation in terms of effects of recognition of the need of elderly education and the level of desire for participation, the need of elderly education has retirement expectation partly affect physical, psychological, and economic preparation. As for the desire to participate in elderly education, expectation of retirement had completely mediating effects on physical preparation and partly mediating effects on psychological and economic preparation. Fourth, the need of elderly education, the desire for participation, retirement expectation, and recognition of provision for retirement by general properties were found to have statistically significant results in terms of gender, age, occupation, and educational background.