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2010, Vol.5, No.5

  • 1.

    Analysis on the Cognition Characteristic and Landmark Landscape for City Design in Digital Era - The Case of Sunchon-city -

    이정 | 정정채 | 2010, 5(5) | pp.1~9 | number of Cited : 2
    Abstract PDF
    The purpose of this study is to analyze the city's characteristics on the cognition characteristic and the landmark landscap e by citizens and to propose for city design guideline in 21c digital era. Data for the analysis were collected in Sunchon-cit y The results are summarized as follows: The perception landscapes were Physical elements(66.2%) and Non-physical eleme nts(33.8%). The cultural characteristic of Non-physical elements was highest. The characteristics of landmarks landscape were closely related to the landscape(28.4%), the history(22.1%) and the popularity(16.4%) of places. The landmark landscapes we re in or oder of Jukdobong Park>Palmabi>Naganeupseong Folk Village>Seonamsa Temple>Suncheonbay>Songgwangsa Templ e> Mt. Jogue〉Mt. Bongwa. The Preference Landscapes were almost agreed with the results from the landmark landscape. On the other hand, the analysis results on Non-preference Landscape were closely related to the personal experiences in pla ces. The symbolic color of Sunchon-city was Green(58.4%).
  • 2.

    An Analysis for Recognition Level of IT Governance in Port Logistics Company

    박용성 | Hyung Rim Choi | 이창섭 and 4other persons | 2010, 5(5) | pp.11~21 | number of Cited : 0
    Abstract PDF
    Recently, domestic and foreign port-logistics companies utilize various information system for creating competitiveness. But, information system is more important to manage and control relevantly than to develop. And business field of port-logistics companies is connected globally, information system is used all over the world. For this reason, introduction of IT Governance in port-logistics companies is necessary. In this study, recognition level of IT Governance in port-logistics companies is analysed before the introduction. The level of IT Governance is classified ‘Strategic Alignment’, 'Value Delivery’, ‘Risk Management’, ‘Resource Management’ and ‘Performance Measurement’ which is suggested by COBIT 4.1. And this helps to analyse expectation standard which is recognized by IT manager in charge. As a result, IT governance for the overall perception, expectations were low. This study provides guidelines for port-logistics companies which are introducing IT Governance efficiently.
  • 3.

    Factors of Affecting the Intention to use of the Mobile Service with Technology acceptance model

    김광현 | 2010, 5(5) | pp.23~29 | number of Cited : 1
    Abstract PDF
    This research based on the TAM(Technology Acceptance Model) theory is a study on the factors affecting the using intention of the mobile service. The result of hypothesis verification is the followings: First, the mobile features affecting innovation pursuit are personalization, playfulness, and network quality. Second, the mobile features directly affecting perceived cost are playfulness and network quality. Third, the mobile features affecting perceived usefulness are personalization, playfulness. Fourth, the mobile features affecting perceived ease of use are instant connectivity and playfulness. Fifth, the mobile feature affecting the using intention of mobile internet are personalization, playfulness, and network quality. Lastly, this research shows that the factors affecting the using intention of mobile service are innovation pursuit, perceived usefulness, and perceived ease of use.
  • 4.

    Research on Instructional Strategies Using Advanced Technologies in Smartphones

    임걸 | 2010, 5(5) | pp.31~41 | number of Cited : 3
    Abstract PDF
    As smartphones are getting popular, there are more discussions on smartphones for education. Especially, recent advanced technologies in smartphones have meaningful implications for educational fields. In this study, some of the new smartphone technologies were introduced and usability of those technologies in education was examined. For the purposes, Wi-Fi-based open source Facetime, HD video recording, and gyroscope in iPhone4 was mainly reviewed. These features can be used in the areas of distance education & video conference, multimedia education, and Game-Based Learning with augmented realities respectively and have potential for enhancing the effectiveness in education when used in a systematic manner. Therefore, continuous research on using state-of-the-art technologies in smarphones for education is needed.
  • 5.

    Exploring of the Direction of Design on Educational Contents of Smartphone Based

    Bae Youngkwon | 2010, 5(5) | pp.43~53 | number of Cited : 2
    Abstract PDF
    Recently, according to the introduction of a smartphone like iPhone, a part of contents industry show signs of life. In addition to it, educational contents of a smartphone based are being developed and used in educational part. This study explored the direction of design on educational contents of a smartphone based at this point of time. For this, this research explored the feature of smartphone, mobile learning, the type of educational contents of a smartphone based, and the direction of design and development on educational contents of a smartphone based through Delphi research. In conclusion,this research expects to be the basis for the supplementary education and the convenient educational infrastructure support through educational contents of a smartphone based for teachers and students.
  • 6.

    The Effect of Learning Information Representation through Playing on Learning Motivation and Academic Achievement

    Gwon-Woo Yang | 2010, 5(5) | pp.55~61 | number of Cited : 3
    Abstract PDF
    In this study, the experiment was carried out on an experiment group of 27 and a control group of 28 in order to investigate the effect of information representation learning through play on the motivation and academic achievement of preliminary elementary teachers. Research tools such as information representation learning program, motivation questionnaire and academic achievement questionnaire were used. Study procedures consisted of pre-test, experimental process, and post-test in order and the data processing was performed by independent sample t-test. The results show that information representation learning through play has a positive effect on learning motivation and academic achievement.
  • 7.

    Study on contacts to cyber obscene materials of High school students in rural area

    김은실 | Kim Bonghan | 길민욱 | 2010, 5(5) | pp.63~70 | number of Cited : 3
    Abstract PDF
    In this paper, 10 December 2009 to 20 February 2010 over 1,537 high school students in rural areas the survey on the status of the cyber-pornography through contact investigation and analysis of the content on the Internet, cyber-pornography,information about the students' behavior has been studied and used. High school students in rural areas as urban high school students, are exposed to cyber-pornography, real-world analysis of the influence was considerable.
  • 8.

    Development of Icon-based Educational Robot Kit

    이강희 | 2010, 5(5) | pp.71~83 | number of Cited : 0
    Abstract PDF
    This paper is to observe the trend of robot education kits abroad as well as in Korea, analyze its strong and weak points in order to create better kits for robot education. This paper suggests icon-based KAI-ROBOT robot education kit for general use, which can be used by anyone ranged from a child to an adult, is easy to use and strong. The components of KAI-ROBOT Kit are largely divided into hardware and software. KRC, the core of the kit’s hardware, contains user-friendly interface, simultaneous usability and scalability, and the software, KAI-LAB, has intuitive and easy-to-learn interface with Korean(English), photographs, and sentences, also adapted modules which apply flow charts, the basic of programming.
  • 9.

    A Study on the LSB Steganalysis method based on variance extension

    박태희 | 2010, 5(5) | pp.85~92 | number of Cited : 1
    Abstract PDF
    This paper proposes LSB steganalysis method based on variance extension by the bit seperation. LSB embedding is the simplest and easiest among many stegonography schemes. But it is difficult to detect secret message due to modified embedding methods. To improve the detection rate to existence of hidden message, we expand the noise variance of image by separating pixels into upper and lower 4bits. Then we decompose each seperated sub-images by using 3-level wavelet transform, extract 84D statistical moments from characteristic function of original and subbands. Multi-layer perceptron(MLP)classifier is used to discriminate between cover and stego image. We experiment our proposed scheme on modified LSB embedding method. The proposed method improves the detection rate to existence of hidden message.
  • 10.

    A Study and Design on XML Source Generator for 3D Molecular Representation

    Jae Ho Kim | SAJOON PARK | 2010, 5(5) | pp.93~100 | number of Cited : 0
    Abstract PDF
    There are educational applications for graphic representation of chemical molecular expresssion(H₂O, CO₂). But the data formats of these applications use a self format. Therefore other applications can't use these formats. Also although the applications generate XML as open format, are mostly for 2D representation. The purpose oft his paper is a development the tool making a molecular expresssion to open format, representing 3D structure. For the purpose, we try to design a source generator transforming a molecular expression to XML sources. We hope to serve the standard molecular source for 2D/3D molecular application with these XML sources.
  • 11.

    Developing Safe Software with Modular Behavioral Properties

    Hyongsoon Kim | Eunyoung Lee | 2010, 5(5) | pp.101~110 | number of Cited : 0
    Abstract PDF
    Verifying software components before deploying them is a significant process when component-based software development is considered for building a large-scale software system. In this paper, we propose a refined model of "property" of Secure Linking (SLinking) and SL-JML using the new model. SL-JML is a behavioral specification language based on the Secure Linking framework, which inter-operates with JML specification. We also show that SL-JML is more flexible than previous JML specifications without compromising the expressive power of the essence of JML specification.
  • 12.

    User Preference Recommand System Using Relevance Distribution Information

    김현주 | 이광석 | 2010, 5(5) | pp.111~120 | number of Cited : 1
    Abstract PDF
    By using wireless communication which is developed, there has been an active electronic commerce. Not like the server's mechanical reactions inside the electronic commerce's form, it is one of the important factor to make a friendly relations from the users service. So in this essay, by using wireless communication inside the electronic commerce, user's dispatcher imforms reducing scale. By evaluating these things, we will develop real-time supportings to the users which is 'Friendly User as Information Monitoring System : FUIS'.
  • 13.

    A Study on Developing of MOM based Middleware XGM

    최준기 | 2010, 5(5) | pp.121~129 | number of Cited : 0
    Abstract PDF
    Scalability for handling large amounts of data, MPP (Massively Parallel Processor) computer is more advantageous. However, this system easy to use without specialized knowledge about the work required to implement the middleware is essential. In this paper, It is developing of a MOM (Message Oriented Middleware) based middleware XGM. Design and implementation of the XGM process is presented. And, prove that proposed system is the superiority of this work.
  • 14.

    A Study on the Optimal Server Virtualization for x86 System

    Sung-Jae Jung | Yu-mi Bae | Woo-Young Soh and 1other persons | 2010, 5(5) | pp.131~139 | number of Cited : 4
    Abstract PDF
    As the web based services increased, the demand on servers tends to grow. Recently the cost effective x86 systems tend to replace mainframe and UNIX systems, but x86 servers shows low utilization of resources comparing with mainframe and UNIX systems that are mainly used for special services. In this paper, we foccussed on the utilization of unused resources for x86 Server and examined functions and effects of Virtualization. We also analyzed Server Vitrualization technique, and compared with the cost effective Free Software and proposed an Optimal Server Virtualization technique for x86 Server.
  • 15.

    Implementation and Evaluation of Communication Middleware for Real-Time Distributed Simulation System

    석진원 | Intae Ryoo | Na, Won Shik | 2010, 5(5) | pp.141~147 | number of Cited : 2
    Abstract PDF
    Recently, the structure of the simulated system is becoming more complex due to the expanded range of simulations,increase in high-level requirements from users and integration requirement between different systems. Unfortunately, the existing structure of the communication middleware can hardly accommodate recent various requirements. In this paper,previous studies analyzed the problems of communication middleware of the existing distributed simulation system with real-time data transfer capability, and proposed an advanced communication middleware for the three-tier client/server architecture using design patterns. In this paper, the proposed communication middleware has been improvement and implemented, and verified through the tested with existing systems.
  • 16.

    A Study on 8kbps IP-MPC Method Considering Cellular Phone

    Lee See Woo | 2010, 5(5) | pp.149~154 | number of Cited : 1
    Abstract PDF
    In this paper, I propose a new method of IP-MPC uses individual pitch in order to accommodate the changes in each pitch interval and reduce pitch errors. The pitch extraction rate was evaluated autocorrelation method, cepstrum method and individual pitch extraction method. As a result, the extraction rate of individual pitch was 85% for female voice and 96%for male voice. Also, I knew that pitch extraction rate was better in individual pitch extraction method than autocorrelation method and cepstrum method. I have evaluated the speech quality of MPC and IP-MPC considering a cellular phone of 8kbps. As a result, I knew that synthesis speech of the IP-MPC was better in speech quality than synthesis speech of the MPC. The speech quality was evaluated both the SNRseg and MOS. As a result, the SNRseg of IP-MPC improved 1.4dB and 1.2dB in female and male voice. In case of MOS, it was 0.37 and 0.22 in female and male voice respectively. In conclusion, I have found out that speech quality of IP-MPC was better than speech quality of MPC.
  • 17.

    Mesh Network Test for Performer Embedded System

    김태정 | Minsoo Hahn | 조현상 and 1other persons | 2010, 5(5) | pp.155~161 | number of Cited : 1
    Abstract PDF
    The use of wireless system in the show based on natural scenery for the synchronization of 50 performer embedded devices has many difficulties. The diffractions from stage settings and other actors, and the interference with other wireless devices make the jamming problems. IEEE 802.11s system can make mesh topology, and recover from one AP trouble automatically. So we adapt the mesh network to the wireless performer device, test the wireless network and produce the guideline for wireless embedded device for the show.
  • 18.

    Speech Recognition using Spectral Information under Noisy Environments

    이광석 | 김현주 | 2010, 5(5) | pp.163~169 | number of Cited : 1
    Abstract PDF
    This research is concerned for improving the result of speech recognition under the noisy speech. We knew that spectral subtraction and recovery of valleys in spectral envelope obtained from noisy speech are more effective for the improvement of the recognition. In this research, the averaged spectral envelope obtained from vowel spectrums are used for the emphasis of valleys. The vocalic spectral information at lower frequency range is emphasized and the spectrum obtained from consonants is not changed. In simulation, the emphasis coefficients are varied on cepstral domain. This method is used for the recognition of noisy digits and is improved well.
  • 19.

    A Survey of Location-based Augmented Reality APPs for implementing the Experience APPs of Cultural Assets

    최홍선 | 이강희 | 2010, 5(5) | pp.171~189 | number of Cited : 1
    Abstract PDF
    A cultural assets APP employing the augmented reality technology helps a user to experience a realistic and accurate information efficiently. To implement the experience APP of cultural assets based on this concept, this paper surveys the latest location-based augmented reality (AR) applications (APPs) and plays them directly at Gyeongbokgung. This paper tests eight kinds of APPs for the performance benchmark and analyzes their user interfaces, instructions, searching and processing speed, and own strong points. Concludingly, this paper draws the key components for implementing a Gyeongbokgung experience APP.
  • 20.

    Ant Algorithm for the Travelling Salesman Problem: Finding the Better Alpha and Beta Values

    HWANG SU CHEOL | Cho, Sang Yeop | 2010, 5(5) | pp.191~199 | number of Cited : 0
    Abstract PDF
    This paper proposes the better parameter finding method which is able to search the optimal solution(minimization of travel distance) by applying ant algorithms to TSP. In order to solve it we define the five types of city distribution, 363combinations of parameters, and for each types of city distribution, make ten city group consisted of 30 cities. And then applying ant algorithm which used the combination of parameters to the city group, we can find 39 better parameters which can use in all types of city distribution commonly.
  • 21.

    Design of Sensor-based Smart Glove Interface for An Efficient Navigation Control

    김진술 | Jang, Byeong-Ok | 2010, 5(5) | pp.201~206 | number of Cited : 0
    Abstract PDF
    The navigation system which is to help driver's way-finding in the car is one of the most necessary systems today while people drives. By the shorties path on the map it has been showed and found the place where people want to arrive at easily. However, operating navigation during the driving can bring very dangerous situation. The purpose of the paper is implementation of sensor-based smart glove to control navigation interface efficiently, in order to prevent a traffic accident. The implemented smart glove system with navigation interface uses signal from the bending fingers through 4 Flex sensors,and 1 FlexiForce sensor in order to control navigation interface in self-regulating, even during the driving.
  • 22.

    Design of Personalization Examination Schedule System for u-Hospital

    Kim,SeokHun | 박길하 | KIM, SOO KYUN | 2010, 5(5) | pp.207~212 | number of Cited : 1
    Abstract PDF
    In a recent hospital stay for information on the various systems are introduced. Globalization and internationalization of these systems for the future, as well as the smooth operation of the hospital for my sake only two nodes interact with anger management needs of an efficient reservation system. In this paper, the hospital information system data exchange through the business process efficiency change and information systematization to achieve integration method was studied,and medical services for patients scheduled scans, reducing latency to maximize personalization examination schedule system designed.