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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 4, Issue 4 - Dec 2004
Volume 4, Issue 3 - Sep 2004
Volume 4, Issue 2 - Jun 2004
Volume 4, Issue 1 - Mar 2004
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Educational Software Development of Bluetooth Protocol for Protocol Monitoring and Emulation
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 1~7
In addition to wired communication technology, wireless communication technology has been driving communication revolution nowadays. Bluetooth technology carries out data/voice communication making pico-net and the various application services are supported by access network connected to public network. This paper presents educational software development of bluetooth protocol stack including HCI, L2CAP, RFCOMM, SDP and profiles including GAP, SPP, GEOP, FTP. This software which supports programming environment of these protocol monitoring and emulation is implemented basically step by step for education based on H connected to the bluetooth device through RS-232-C, UART or USB cable. Application program coded by Visual C is operated over the firmware loaded on the bluetooth device connected to the PC. Additionally ftp and chatting function are developed to enhance educational efficiency.
Design and Implementation of an Adaptive learning Management System for Personalized Learning
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 8~17
In this paper, we design an intelligent loaming management logics which provide personalized teaming considering adaptive learning content dement and content sequencing. We enhance the existing functional model including adaptive learning management functions. Also, we present a system architecture to implement the adaptive learning management system. We realize the adaptive teaming management system based on the SCORM run-time engine.
Visual Feature Extraction for Image Retrieval using Wavelet Coefficient’s Fuzzy Homogeneity and High Frequency Energy
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 18~23
In this paper, we propose a new visual feature extraction method for content-based image retrieval(CBIR) based on wavelet transform which has both spatial-frequency characteristic and multi-resolution characteristic. We extract visual features for each frequency band in wavelet transformation and use them to CBIR. The lowest frequency band involves spacial information of original image. We extract L feature vectors using fuzzy homogeneity in the wavelet domain, which consider both the wavelet coefficients and the spacial information of each coefficient. Also, we extract 3 feature vectors wing the energy values of high frequency bands, and store those to image database. As a query, we retrieve the most similar image from image database according to the 10 largest homograms(normalized fuzzy homogeneity vectors) and 3 energy values. Simulation results show that the proposed method has good accuracy in image retrieval using 90 texture images.
A Rating Recognition System of Broadcast Program using Template Matching
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 24~31
This paper embodies the rating recognition system of broadcast program which can automatically acknowledge the broadcast pictures indicating the harmfulness rating, so prevent children from watching TV. This experiment was progressed as the course of extracting featured patterns (standard number patterns) and the proper patterns owned only by the concerned numbers from the numbers of standard font used by broadcasters, and comparing these patterns with input pictures and arranging them. The recognition rate of x-rating was remarkably high as a result of this experiment.
An Empirical Study on the Criteria of the Materiality on Auditors Judgements of Opinion
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 32~39
Results of the study are summarized as follows. Firstly, it has been analyzed that some differences exist to determine the criteria of materiality in capital market and industrial conditions in the environmental factors of economics, Secondly, it has been analyzed that some differences exist to determine the criteria of materiality in an incorporations history in the environmental factors of incorporation,, Thirdly, it has been analyzed that some differences exist to determine the criteria of materiality in economic planning and customs policy In the environmental factors of politics between internal auditors and external auditors.
A Study for Strategic Congruence Effects of Information System Technology Structure
Chung, Lak-Chae ;
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 40~48
In a study involving 52 large organizations in the savings institutions industry, the relationship between information systems technology(IT) structure and competitive strategy was investigated based on structural contingency theory. Two dimensions of IT structure and two types of competitive strategy were employed to test a contingency mood. It was found that enhanced congruence between IT structure and competitive strategy was associated with higher competitive advantage. The structural dimension significantly associated with the "defender" strategic stance was more centralized and more integrated application of IT, while the structural dimension significantly associated with "prospector〃 positioning was more decentralized and less integrated application of IT.lication of IT.
MIB 정보와 패킷 분석을 통한 DDoS 공격의 탐지
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 49~55
DDoS is an attack type that interfere with normal service by running out network bandwidth, process throughput, and system resource. It can be recognized intuitively by network slowdown and connection impossibility state, but it is necessary to detect DDoS attack by exact and quantitative analysis. In this paper, the exact and efficient DDoS attack detection system which is able to detect traffic flooding by MIB information, and attack traffic by packet analysis is proposed and realized.
Design and Analysis of Data File Protection based on the Stream Cipher
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 55~66
Recently, as the personal computers are supplied rapidly, they formed the nucleus of the computer system. But, because of the easiness that anyone uses them to go near easily, it is the fact that the security of personal computer is weakness. So, in the paper, 1 propose the technical method that minimizes the loss and leakage of important data. This paper implemented a crypto system for security of data file on personal computer and assistance storage medium. The way of encryption/decryption is applied by complexity method which mixed Diffie-Hellman key exchange protocol, a typical RC4(Rivest Cipher version 4) algorithm of stream cipher and a typical MD5(Message Digest version 5) of Hash Function. For valuation implemented crypto system, three criteria is presented, which are crypto complexity, processing time and pattern matching. And according to analysis the three criteria the crypto system is verified the security, efficiency and usefulness. The crypto system is programmed with Visual C++ language of Microsoft. And so, as this is software system, we shall have a technical security system at a minimum cost for all personal computer.
The Authentication Structure Based Mobile PKI
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 67~75
In this paper, we design an authentication model based mobile PKI (Public Key Infrastructure). The authentication mood consists of Root-CA Home-network agent and Foreign-network agent. CA will going to gave the delegation ticket to Home-Agent or Foreign-Agent when they request. The authentication mode information security is various characteristic more then high speed, mobile network and low cost more then previous structure of assure information security.
Efficient Query Expansion Method using Fuzzy Thesaurus in Component Retrieval
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 76~82
In this paper, we used query evaluation method through thesaurus for retrieving Components having concept relation with any classes in a query. Queries are presented in boolean and expanded by similar table. Query expansion by thesaurus is the solution of the term mismatching and it enhanced precision and recall of the components retrieval. For efficiency evaluation of query expansion, we defined most critical value through a simulation and compared precision and recall each other
A study on the Message Waiting Indication in the SIP based Instant Messenger
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 83~89
Instant messaging(IM) service is one of the useful communication means in the Intemet for exchanging simple messages between users. Usually, IM service is coupled with Presence service which provides status information of users. In this case, instant messages are sent and received directly between on-line users. Therefore, messages could not be exchanged when users are in off-line state. In this paper, We have implemented SIP based Instant Messaging System which includes message server that can store and manage instant messages. With this message server, messages could be exchanged legalness of user states. Furthermore, our system includes message waiting indication event package which provides useful informations about messages in the message server. And this system also includes the Caller Preference capabilities.
Design and Implementation of a XML Compression Algorithm Supporting Query Processing for Compressed Documents
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 90~99
With the spread of internet, the digitalization and the knowledge informatization are in progress rapidly. Specially, numerous users make the various works and use the services on the web. For the most part, these works make use of the XML The XML shines the reusing of the documents because it is separated from contents and sues. Also, it can re-define the logic structure of the document for requirement of the developer. However, the XML document’s size is much larger than common text document because it handles the document type and adds numerous tags for representing structure of the document. To utilize the limited storage devices of Palmtop, PDA and so u, it is necessary to compress and handle the documents efficiently. Recently, the compression techniques for efficiently handling and compressing the XML documents are under way to solve this problem. But most of the existing researches don't support the query processing for the compressed XML documents. In this paper, we design and implement the XML compression algorithm that compresses the XML document and Processes the query of compressed XML document faster and more efficiently than previous techniques.
Multicast Routing Algorithm to Guarantee QoS in Mobile Computing Environment
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 100~104
In this paper, we propose multicast routing algorithm to guarantee QoS in mobile computing environment. Through simulations and comparing to another multicast algorithm, we reach a conclusion is that DQDMR can simply and dynamically adjusts the construction of multicast tree with little delay and the most reducible bandwidth resources.
Development of Regional Information Contents for the local Government on the basis of GIS and Satellite Images
The Journal of the Korea Contents Association, volume 4, issue 1, 2004, Pages 105~111
It was investigated to develop the contents for the local government for the purpose of providing various and correct information. Especially it was focused to take advantage spatial information techniques, Geographic Information Systems and Remote Sensing. The research site for this study was Muan-gun located at the south-western part of Korea and this site has very high opportunities to became the central point for the economical and tourist industry. The regional information contents for Muan-gun was developed and composed of three elements； internet related, geographic information related and satellite image related elements. These contents will make a contribution for the local government to present the regional information effectively and efficiently.