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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Society of Computer and Information
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Korean Society of Computer Information
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Volume & Issues
Volume 14, Issue 12 - Dec 2009
Volume 14, Issue 11 - Nov 2009
Volume 14, Issue 10 - Oct 2009
Volume 14, Issue 9 - Sep 2009
Volume 14, Issue 8 - Aug 2009
Volume 14, Issue 7 - Jul 2009
Volume 14, Issue 6 - Jun 2009
Volume 14, Issue 5 - May 2009
Volume 14, Issue 4 - Apr 2009
Volume 14, Issue 3 - Mar 2009
Volume 14, Issue 2 - Feb 2009
Volume 14, Issue 1 - Jan 2009
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A Dynamic Web Service Orchestration and Invocation Scheme based on Aspect-Oriented Programming and Reflection
Lim, Eun-Cheon ; Sim, Chun-Bo ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 1~10
The field of the web service orchestration introduced to generate a valuable service by reusing single services. Recently, it suggests rule-based searching and composition by the AI (Artificial Intelligence) instead of simple searching or orchestration based on the IOPE(Input, Output, Precondition, Effect) to implement the Semantic web as the web service of the next generation. It introduce a AOP programming paradigm from existing object-oriented programming paradigm for more efficient modularization of software. In this paper, we design a dynamic web service orchestration and invocation scheme applying Aspect-Oriented Programming (AOP) and Reflection for Semantic web. The proposed scheme makes use of the Reflection technique to gather dynamically meta data and generates byte code by AOP to compose dynamically web services. As well as, our scheme shows how to execute composed web services through dynamic proxy objects generated by the Reflection. For performance evaluation of the proposed scheme, we experiment on search performance of composed web services with respect to business logic layer and user view layer.
A Study on MRD Methods of A RAM-based Neural Net
Lee, Dong-Hyung ; Kim, Seong-Jin ; Park, Sang-Moo ; Lee, Soo-Dong ; Ock, Cheol-Young ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 11~19
A RAM-based Neural Net(RBNN) which has multi-discriminators is more effective than RBNN with a discriminator. Experience Sensitive Cumulative Neural Network and 3-D Neuro System(3DNS) that accumulate the features point improved the performance of BNN, which were enabled to train additional and repeated patterns and extract a generalized pattern. In recognition process of Neural Net with multi-discriminator, the selection of class was decided by the value of MRD which calculates the accumulated sum of each class. But they had a saturation problem of its memory cells caused by learning volume increment. Therefore, the decision of MRD has a low performance because recognition rate is decreased by saturation. In this paper, we propose the method which improve the MRD ability. The method consists of the optimum MRD and the matching ratio prototype to generalized image, the cumulative filter ratio, the gap of prototype response MRD. We experimented the performance using NIST database of NIST without preprocessor, and compared this model with 3DNS. The proposed MRD method has more performance of recognition rate and more stable system for distortion of input pattern than 3DNS.
The Color Polarity Method for Binarization of Text Region in Digital Video
Jeong, Jong-Myeon ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 21~28
Color polarity classification is a process to determine whether the color of text is bright or dark and it is prerequisite task for text extraction. In this paper we propose a color polarity method to extract text region. Based on the observation for the text and background regions, the proposed method uses the ratios of sizes and standard deviations of bright and dark regions. At first, we employ Otsu's method for binarization for gray scale input region. The two largest segments among the bright and the dark regions are selected and the ratio of their sizes is defined as the first measure for color polarity classification. Again, we select the segments that have the smallest standard deviation of the distance from the center among two groups of regions and evaluate the ratio of their standard deviation as the second measure. We use these two ratio features to determine the text color polarity. The proposed method robustly classify color polarity of the text. which has shown by experimental result for the various font and size.
Traffic Management in Mobile Ad-hoc Network
Kang, Kyung-In ; Park, Gyong-Bae ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 29~35
In this paper we propose a mobile ad-hoc routing protocal based on AODV(Ad hoc On demand Distance Vector) with traffic management support and evaluate the performance through simulation. The average reception rate is increased by establishing the shortest route, considering in advance the usable communication resources at each node. For performance evaluation, we analyze the average data reception rate, considering the node mobility.
The Stateless Care of Address Configuration Scheme To Provide an Efficient Internet Service in a Train
Lee, Il-Ho ; Lee, Jun-Ho ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 37~46
The movement of the MR loaded on the train is confined to the bidirectional movement along the rail. Therefore, the AR connected to the MR can use the address information of the neighboring ARs and configure CoA in advance before performing L2 and L3 handoff. The MR can acquire new CoA immediately from the present AR after the movement detection procedure. The performance analysis shows that the proposed scheme can provide CoA to the MR about 1.8(s) at minimum and 4.98(s) at maximum faster than the Stateless scheme because the proposed scheme does not carry out any additional CoA and DAD procedure unlike the Stateless scheme.
An Improved Detecting Scheme of Malicious Codes using HTTP Outbound Traffic
Choi, Byung-Ha ; Cho, Kyung-San ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 47~54
Malicious codes, which are spread through WWW are now evolved with various hacking technologies However, detecting technologies for them are seemingly not able to keep up with the improvement of hacking and newly generated malicious codes. In this paper, we define the requirements of detecting systems based on the analysis of malicious codes and their spreading characteristics, and propose an improved detection scheme which monitors HTTP Outbound traffic and detects spreading malicious codes in real time. Our proposed scheme sets up signatures in IDS with confirmed HTML tags and Java scripts which spread malicious codes. Through the verification analysis under the real-attacked environment, we show that our scheme is superior to the existing schemes in satisfying the defined requirements and has a higher detection rate for malicious codes.
DDoS TCP Syn Flooding Backscatter Analysis Algorithm
Choi, Hee-Sik ; Jun, Moon-Seog ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 55~66
In this paper, I will discuss how the Internet has spread rapidly in our lives. Large portals and social networks experience service attacks that access personal customers' databases. This interferes with normal service through DDoS (Distribute Denial of Service Attack), which is the topic I want to discuss. Among the types of DDoS, TCP SYN Flooding attacks are rarely found because they use few traffics and its attacking type is regular transaction. The purpose of this study is to find and suggest the method for accurate detection of the attacks. Through the analysis of TCP SYN Flooding attacks, we find that these attacks cause Backscatter effect. This study is about the algorithm which detects the attacks of TCP SYN Flooding by the study of Backscatter effect.
A New Instant Messaging System using Extended CPL in SIP Environment
Jang, Choon-Seo ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 67~74
The presence informations of users of Instant Messaging System In SIP(Session Initiation Protocol) environment are obtained by presence server, and message waiting indication event package is used to provide various message informations stored in the message server. In this paper, I have proposed a new method in which Extended CPL(Call Processing Language) has been applied to presence service to provide various functions to the users. A user of Instant Messaging System subscribes presence information and CPL scripts which describe his requirements, and presence server executes CPL scripts when instant messaging service is subscribed and notifies presence informations. Several CPL operation tags are added, and therefore various services which combine presence service and call processing can be provided in this system. Furthermore a new method has been proposed in which message server and presence server correlate in Instant Messaging System. When changes of message status informations occur, message server send these informations to the presence server, and presence server provides both presence informations and message status informations in extended format. As this method can be a substitute for message waiting indication event package, the system operating efficiency can be increased. The performance of this proposed system is evaluated by experiments.
Patient Management to Improve the Efficiency of Infectious U-MAS System Design
Shin, Yoon-Hwan ; Shin, Ye-Ho ; Ryu, Keun-Ho ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 75~84
In this paper, the EPC Network as the most important technologies in the field of applied technology research and special attention to the use of RFID to better manage the disease in infected U-MAS (U-Medical Administrative Services) system was designed. U-MAS system, the Center for Disease Control in the illness, depending on the type of isolate and treat infected patients, recovery, discharge, isolation wards and intensive italian to manage and increase efficiency, manual and use a simple computer program improve the qualify of the current level, using RFID tags to improve the management of the patient everything that a little more and be out of the isolation ward, if competent disease management districts, such as the location to respond more quickly to facilitate the purpose is to contribute to. First, EPC Network and related technology for mobile RFID systems and related technology research. U-MAS system design offers. If you take advantage of the proposed U-MAS system for monitoring infectious disease patients and patients in the isolation ward, when the unauthorized departure location to shorten the time it takes to improve the effectiveness of disease management and present the elected effects was.
Collaborative Recommendation of Online Video Lectures in e-Learning System
Ha, In-Ay ; Song, Gyu-Sik ; Kim, Heung-Nam ; Jo, Geun-Sik ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 85~94
It is becoming increasingly difficult for learners to find the lectures they are looking for. In turn, the ability to find the particular lecture sought by the learner in an accurate and prompt manner has become an important issue in e-Learning. To deal this issue, in this paper. we present a collaborative approach to provide personalized recommendations of online video lectures. The proposed approach first identifies candidated video lectures that will be of interest to a certain user. Partitioned collaborative filtering is employed as an approach in order to generate neighbor learners and predict learners'preferences for the lectures. Thereafter, Attribute-based filtering is employed to recommend a final list of video lectures that the target user will like the most.
The Noise Robust Algorithm to Detect the Starting Point of Music for Content Based Music Retrieval System
Kim, Jung-Soo ; Sung, Bo-Kyung ; Koo, Kwang-Hyo ; Ko, Il-Ju ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 95~104
This paper proposes the noise robust algorithm to detect the starting point of music. Detection of starting point of music is necessary to solve computational-waste problem and retrieval-comparison problem with inconsistent input data in music content based retrieval system. In particular, such detection is even more necessary in time sequential retrieval method that compares data in the sequential order of time in contents based music retrieval system. Whereas it has the long point that the retrieval is fast since it executes simple comparison in the order of time, time sequential retrieval method has the short point that data starting time to be compared should be the same. However, digitalized music cannot guarantee the equity of starting time by bit rate conversion. Therefore, this paper ensured that recognition rate shall not decrease even while executing high speed retrieval by applying time sequential retrieval method through detection of music starting point in the pre-processing stage of retrieval. Starting point detection used minimum wave model that can detect effective sound, and for strength against noise, the noises existing in mute sound were swapped. The proposed algorithm was confirmed to produce about 38% more excellent performance than the results to which starting point detection was not applied, and was verified for the strength against noise.
The embodiment of the advanced EPS with the synthesis system of moving picture
Kim, Rog-Hwan ; Jung, Byeong-Soo ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 105~113
This paper is aimed at embodying the optimal system for foreign workforce supply of nation in order to introduce qualified foreign workers at the age of eleven thousand foreigners. It is difficult to employ foreign workers qualified and it makes job rosters' confidence fall down which is the supplementary resources when selecting due to the insufficient job seekers' detailed information. Therefore, the moving control system should be added in current system to deal with these problems. For this, in this paper, we propose that the moving picture embedded system applies to the current EPS utilizing multimedia, network and database technologies as regards adding the function of the moving picture synthesis to recent system. It also suggests the advanced foreign employment control system related to the advanced system which makes employers to hire foreign workers satisfying their requirements and demand.
Design and Implementation of Equipment Monitoring System for Data Integration
Kwark, Woo-Young ; Kim, Woo-Sung ; Park, Geun-Duk ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 115~126
It is an important matter to manage data gathered from equipment in the manufacturing environment. However, systematic management about these data is sparsely deployed in the practical fields. This paper proposes a middleware monitoring system that efficiently supports acquisition of data from the equipment, efficiently compensates the lost data and flexibly maintains extensibility of the system. Through the result system of this paper, the data gathered from the equipment are easily stored into the database and the system status is able to be monitored in real-time. Furthermore, because the data are stored in the XML format, they are utilized in other systems in straightforward manner, which enhances the interoperability of the system. Especially, it enables ease interface to SAP, implements light-weight system by a simplified business logic and strengthen the extensibility and maintenance ability.
System Implementation and Analysis of Job Analysis for University Curriculum
Hyun, Seung-Ryul ; Lee, Sang-Jeong ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 127~134
Universities or job training institutes need to develop training courses that match up with requirements of enterprises. Therefore, job analysis system that analyzes skills which are needed for job performing and makes it possible to be reflected in the curriculums is requested for deriving generalized curriculum system. In this paper, to develop a curriculum that fulfills the requirements of enterprises, we implemented a series of DACUM(Developing A CurriculUM) based process that performs verification of tasks for workers and roadmap for curriculum, etc. And, we analyzed a instance of this application system. The proposed system is implemented by Java and MS Access database. The system is possible to work with central database realized by MS SQL Server through the Internet.
A Study on the Scheme of Implementing Meta-data Based Applications for Enterprises
Jang, Gil-Sang ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 135~145
Generally, the phases of constructing information systems are consisted of systems planning and selection, system analysis, system design, and system implementation and operation. These systems require many efforts and costs for additional development of modification requirements due to a frequent changes of business environments and business processes. Especially, inconsistencies between system design and system implementation usually happen during development steps because of the difficulties of program developments due to difficulties of capturing exact user requirements and frequent changes of user requirements. This paper proposes a scheme of implementing meta-data based applications for enterprises in order to reduce inconsistencies between system design and system implementation and to overcome limits of the existing coding-based development methods of applications which must use until disuse if they are developed once. Also, this paper presents a framework of repository system to systematically manage and utilize meta-data. The core concept of the proposed scheme makes outputs generated in the phases of system analysis and design into meta-data and is to easily develop and customize application programs using meta-data repository. Also, to show the applicability of the proposed scheme, it is applied to implement ERP system of 'H' automotive part manufacturer. As a result, the proposed scheme can gain improvements such as easiness and productivity of program development, easiness of maintenance, reusability of program components, etc.
A Study of Integrated Press System Implementation for Traffic Information
Chung, Sung-Hak ; Park, Hoy-Ryong ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 147~156
The aim of this study is to propose an integrated press system design for traffic information service by multi-connecting traffic information services which are now being serviced by each different requirements for the press service and by providing advanced traveler information service which organically user oriented design such as traffic broadcast, news, journal, semantic web and also related traffic ontology as well as road traffic information. For the objective, the status of domestic and foreign traffic information supply system was analyzed and then the requirements by media were reviewed. Then, by analyzing the system implementation method and the implementation system the method of implementing such the system was suggested. The design method suggested in this study enabled the information users to utilize a variety of traffic information through intervening between the necessary and sufficient conditions of information users and information suppliers. Throughout the result of this study, for the users who used the integrated transport, the efficient space movement and the economic using value was improved. Providing the traffic information through the press media will become useful information to road drivels, and it is effected that the traffic volume will be dispersed and the traffic jam will be relieved owing to the supply of traffic information to the press.
The Study on the Internet Addiction Influencing Factor and Coping Strategies for Juvenile
Kim, Kyung-Woo ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 157~165
The purpose of this study was to investigate the relationship between internet addiction in adolescent and influencing factor traits. In addition, the relationship between internet addiction and environmental coping strategies were examined. To examine the main purpose. analyzed as followed. According to the results of study. First, What have influencing factors on internet addiction? Second, How about were relationship between multidimensional factors correlation and multiregression analysis? Third, What about were prevention and coping strategies on internet addiction in adolescent period? According to the analysis with coping strategies researches, the results were presented as follows. Results showed that have positive correlation with internet use time, escape from reality, impulsivity, depression, anger control by examined results of Young addiction measure. Significant variables have influencing internet addiction with internet use time, escape from reality internet use, depression, anger control impulsivity. Based on these study results, This paper made a suggestion about prevention prescription and coping strategies of influencing factors on internet addiction in adolescent.
An Empirical Study on Evaluation for Administrative Service Quality of Public Institution : Focused on District Offices in Seoul
Park, Kyung-Ho ; Lee, Kang-In ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 167~177
As the service quality has been reconsidered in public sector as well as private enterprises, the need for public sectors to adopt principle and practices of private sectors is concerned with customer-focused approach, the different business culture of public service organizations makes it difficult to improve service qualify. Also, Since concept of service contains intangibility, heterogeneity, Simultaneousness and perishability, it makes peoples more difficult to measure service quality. Therefore, this study proposes synthetic Administrative Service duality Index(ASQI) using fuzzy set theory and analytic hierarchy process to evaluate the service qualify in subjective environment. In ASQI model, Fuzzy set theory helps to measure the ambiguity of concepts that are relative to human being's subjective judgement. Also, this study utilizes AHP method to evaluate the preference weights of service quality dimensions (tangibility, reliability, responsiveness, assurance, empathy) for customers.
A Study of Air Cargo Logistic System Process
Lee, Hwi-Young ; Lee, Jae-Jin ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 179~187
The national boundary's meanings turn to weak according to advent of Global enterprises. The place for design a product and marketing are separated to actual market. R&D is to the area where the knowledge activity is well, and low skilful product assembling is to the place the low wage is acceptable. It shows that the importance of net work structure. From early 90's, production system is diversified to markets where with the consumer as the central as multifarious items and creation new demands through consumer's participation into manufacturing process. This phenomenon show that logistics structures adapt to demand of technical variation, and the development of e-business with VAN(:value added network) and EDI(:Electronic data interchange) prove it. This study tried to analyze utilitarian assay about systems those land, sea, air logistics through documents research, and this study also present the direction of logistics system of airline company and goal of development on the based to the model of domestic airline company accordingly.
The Basic Study for Expanding the CSR Awareness of Online Game Development Company
Kim, Chan-Mo ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 189~194
CSR(Corporate Social Responsibility), as company's survival strategy, recently has an increasing importance in the world and becomes a global trend as a requisite of improving national competitiveness. That is because advanced countries hurry to standardize the CSR so that it can give systematic complementary methods to the right and reverse function due to many emerging multinational corporations and trade increase between nations. This study is the basic study to expand the CSR awareness of online game development company resulting from this problem. Yet the CSR-related discussions in Korea is still in its infancy even in the general companies. But online game industry has overseas export possibility, especially high profit in another country. The complete preparation is the key to the rise and fall of online game, furthermore related companies.
Effects of Cognitive Focus and Affective Focus on Attitude and Buying Intention in DMB Cellular Phone Purchasing
Sohn, Jun-Sang ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 195~204
The present study investigated the effects of focus on consumers' attitudes and buying intentions. For these purposes, researcher compare the attitudes and buying intentions by focus groups after presenting cognitive and affective product informations about a cellular-phone. The results of present experiment were as follow: First, cognitive focus led to highest cognitive attitude and affective focus also led to highest affective attitude. Second, It was highest buying intention in an affective focus and lowest in a non-focus. Third, a cognitive focus resulted in more cognitive words being recalled, by comparison with an affective focus, whereas an affective focus resulted in more affective words being recalled, by comparison with a cognitive focus. But they were not significant. These results show that cognitive and affective focuses lead to different attitudes that differ in their basis. An attitude formed in an affective focus results in a stronger buying intention than an attitude formed in an cognitive focus. The present findings also suggest that the different focus conditions result in different attitudes and buying intentions being formed, and to be diluting but to more enduring effects.
A Study on Agricultural Product Warehouse Management based on Ontology
Kim, John ; Lee, Hyun-Chang ; Koh, Jin-Gwang ;
Journal of the Korea Society of Computer and Information, volume 14, issue 9, 2009, Pages 205~210
This paper proposes an ontology-based context aware system model for the purpose of storing and managing agricultural products using ubiquitous sensors to share and distribute information. In these days, according to penetrating ubiquitous technologies into our way of life, the importance of information is increasing gradually. The importance of ontology in a domain is getting as well. Therefore, this paper designs and build an ontology-based agricultural products warehouse model using context aware state information obtained by using wireless sensors. Also, it shows the result described by graphical ontology results to share common understanding on the structure of context information among users, devices and services to enable semantic interoperability owing to the information of the context aware state of the warehouse.