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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Institute of Information and Communication Engineering
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The Korean Institute of Information and Commucation Engineering
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Volume & Issues
Volume 6, Issue 8 - Dec 2002
Volume 6, Issue 7 - Nov 2002
Volume 6, Issue 6 - Oct 2002
Volume 6, Issue 5 - Aug 2002
Volume 6, Issue 4 - Jun 2002
Volume 6, Issue 3 - May 2002
Volume 6, Issue 2 - Apr 2002
Volume 6, Issue 1 - Feb 2002
Selecting the target year
A Study on Optimized Information Search Algorithm Using lava
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 797~804
As internet use is being generalized central of WWW(World Wide Web) service of multimedia based recently, we could acquire many informations that exist to all over the world's computer network .Therefore, picking up of information became important problem before that internet is generalized, but it is risen to important problem to acquire correct information rapidly on modem society that use of internet is generalized. This paper designed internet search engine and understand structure of internet search engine drawing URL that is optimized, and secure embodiment technology using Java that is language of object base. Search engine that proposed in this paper maintained user's the convenience by offer keyword search, and simplify user interface And although quantity of searched information site is few, search engine show that the bad link rate of searched result is improved compare with existent domestic manufacture search engines.
A Study on the Mobile Commerce Technology Trend and Analysis of Advanced Patents
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 805~811
According to progressing the If(Information Technology), Mobile Commerce have been activated. Hut all kind of theses information is limited in thesis and report. Recently importance of Intellectual Property Right is emphasized and it's very demanded to study for it. Therefore, this thesis will investigate a tendency about Mobile Commerce and Intellectual property Right which is related it. Then it will be presented the way for ensuring the Intellectual Property Right in next generation through seeking a way for guaranteeing Intellectual Property Right of Domestic.
GIS Analyst of Fishing Fleet in the East Sea Derived from Nighttime Satellite Images in 1993
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 812~818
Spatio-temporal distributions of nighttime fishing fleet are descirbed with the aid of geographic information system(GIS) technology in the East/Japan Sea, using daily mean composite images of the Defense Meteorological Satellite Program(DMSP) /Operational Linescan System(OLS) in 1993. We selected a study area from
E in longitude in order to describe the monthly and seasonal changes of nighttime fishing fleet. The GIS software package Image Analyst (ArcView 3) are used to analyze spatio-temporal distributions of fishing nut. And the OLS images of nighttime visible band provide useful information about the spatio-temporal distribution of the fishing nut. Density areas of nighttime fishing fleet are around Tsushima/korea Strait. the east coast of the Korea Peninsula, the coast of Honshu, and around Yamato Bank.
A Study on the Number Recognition using Cellular Neural Network
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 819~826
Cellular neural networks(CNN) are neural networks that have locally connected characteristics and real-time image processing. Locally connected characteristics are suitable for VLSI implementation. It also has applications in such areas as image processing and pattern recognition. In this thesis cellular neural networks are used for feature detection in number recognition at the stage of re-processing. The four or six directional shadow detectors are used in numbers recognition. At the stage of classification, this result of feature detection was simulated by using a multi-layer back Propagation neural network. The experiments indicate that the CNN feature detectors capture good features for number recognition tasks.
A dedicated line operating and maintenance system design based on UML
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 827~832
The development of dedicated network management system is essential to meet the following conditions: the system must run the configuring and repair processing for the dedicated communication network, and can manage new next generation data dedicated communication network of various types. In general it is effective that the system is consisted of decentralized module to be accessible for business logic and datum to remote area. To solve these problems, a method is to use object-oriented design techniques. That is, it is to abstract reusability objects and make component module using the abstracted objects. In this paper, we propose a management system of dedicated communication network service using object-oriented design techniques which are UML(Unified Modeling Language).
Implementation of Intrusion Detection System Using Packet Capture
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 833~842
Computer security is considered important due to the side effect generated from the expansion of computer network and rapid increase of use of computers. A attack of intruders using a vulnerability of operating system, protocol and application programs. And so, The attack methods is to be high technology and professional. Thus It must be necessity that we necessary a solution to structure, management for framework of information technology. This paper develope intrusion detecting system for separating intruders form critical system and design IDS model and implementation of it
Study on monitoring and prediction for the occurrence of red tide in the middle coastal area in the South Sea of Korea 1. The relationship between the occurrence of red tide and the meteorological factors
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 843~848
It is studied on the relationship between the occurrence of red tide and the meteorological factors(precipitation, air temperature, sunshine and winds) in the middle coastal area in the South Sea of Korea. In summer and early-fall which frequently occurred the red tide, the precipitation had directly influence on the occurrence of red tide because it carried the nutritive substances which originated from the land into the coastal areas. Then air temperature kept up generally high values, and sunshine and winds showed not directly the relationship on the occurrence of red tide.
Design of the maritime safety network for small boat
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 849~855
The accidents on the sea which have happened in korea was caused by small boats as much as more than 80percent. These small boats are not equipped with maritime safety telecommunication network. And the accidents related to small boats have been notable as the current system of maritime safety telecommunication network was changed into GMDSS system in 1999. There can be many presumed reasons that these accidents have happened. The main reason, however, the owners of small boats do business on so small a scale that they can't introduce the expensive telecommunication equipments. And almost these small boats use land mobile telecommunication system more often than ever, so it is necessary to prepare for a way to use it reasonably. This paper is to design maritime safety telecommunication network for small boats under korean situation, using land mobile telecommunication system.
High Level Object Oriented Real-Time Simulation Programming and Time-triggered Message-triggered Object(TMO) Scheme
Jeong, Chan-Joo ; Na, Sang-Donh ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 856~862
The object-oriented(00) distributed real-time(RT) programming movement started in1990's and is growing rapidly at this turn of the century. Distributed real-time simulation is a field in its infancy but it is bounded to receive steadily growing recognition for its importance and wide applicability. The scheme is called the distributed time-triggered simulation scheme which is conceptually simple and easy to use but widely applicable. A new generation object oriented(00) RT programming scheme is called the time-triggered message triggered object(TMO)programming scheme and it is used to make specific illustrations of the issues. The TMO structuring scheme is a general-style components structuring scheme and supports design of all types of component including hard real time objects and non real time objects within one general structure.
Deadline Handling in Real-Time Distributed Object Oriented Programming of TMO
Kim, Hee-Chul ; Na, Sang-Dong ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 863~872
Real-time(RT) object-oriented(00) distributed computing is a form of RT distributed computing realized with a distributed computer system structured in the form of an object network. Several approached proposed in recent years for extending the conventional object structuring scheme to suit RT applications, are briefly reviewed. Then the approach named the TMO(Time-triggered Message-triggered Object) structuring scheme was formulated with the goal of instigating a quantum productivity jump in the design of distributed time triggered simulation. The TMO scheme is intended to facilitate the pursuit of a new paradigm in designing distributed time triggered simulation which is to realize real-time computing with a common and general design style that does not alienate the main-stream computing industry and yet to allow system engineers to confidently produce certifiable distributed time triggered simulation for safety-critical applications. The TMO structuring scheme is a syntactically simple but semantically powerful extension of the conventional object structuring approached and as such, its support tools can be based on various well-established 00 programming languages such as C++ and on ubiquitous commercial RT operating system kernels. The Scheme enables a great reduction of the designers efforts in guaranteeing timely service capabilities of application systems.
Efficient Rotor Fault Detection of Induction Motors Using Stator Current Spectrum Monitoring
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 873~878
Stator current spectrum by the fast Fourier transform (FFT) of current signals has been widely used for fault detection in induction motors. In this paper, we propose efficient rotor fault detection of Induction motors using stator current spectrum monitoring. The proposed method utilizes the mean absolute difference (MAD) between a Predetermined reference vector and a feature vector extracted from the stator current spectrum. Our proposed approach requires a smaller amount of computations when compared to fault detection algorithms based on neural networks, since it uses simple MAD criterion to detect rotor faults related broken rotor bars. Experimental results show that our proposed method can successively detect the rotor fault of the induction motor.
The Development of Super High Speed PMSM Sensorless Vector driver for Direct Drive Method Turbo Compressor
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 879~884
There are screw, reciprocating and turbo compressor by structure in an air compressor, essential equipment on he industrial spot. Resently it is wide that the range of turbo compressor's use in gradual, turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently the study of turbo compressor applied super high speed motor and drive, removing gearbox made its size small and mechanical friction loss minimum. In this study we tried to develope variable super high speed motor drive systems for 150Hp, 70,000rpm drect drive Turbo compressor. The result of study is applied to a 150Hp direct turbo compressor and makes it goods.
The Development of DSP Based Multi Controller for Direct Drive Method Turbo Compressor
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 885~890
Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently the study of turbo compressor applied super high speed motor and drive, removing gearbox made its size small and mechanical friction loss minimum. In this study we tried to develope variable super high speed motor controller, compressor controller and MMI controller under one DSP based systems for 1500Hp, 70,000rpm direct drive Turbo compressor. It have to do unitification of each controller"s hardware and software. The result of study is applied to a 150Hp direct turbo compressor and makes it goods.oods.
A Design of Voltage-controlled frequency Tunable Integrator
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 891~896
In this paper, a new voltage-controlled tunable integrator for low-voltage applications is proposed. The proposed active element is composed of the CMOS complementary cascode circuit which can extend transconductance of an element. Therefore, the unity gain frequency which is determined transcon-ductance is increased than that of the conventional element. And then these results are verified by the
CMOS n-well parameter HSPICE simulation. As a result, the gain and the unity gain frequency are 42dB and 200MHz respectively in the element on 2V supply voltage. And power dissipation of the designed circuit is 0.32mW.
An Inset-Fed Microstrip Patch Antenna Having Modified Feeding Structure in the S-Band
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 897~903
In this paper, a modified feeding structure for microstrip patch antenna is suggested for improving the performances. The proposed antenna has a gap between the transmission line and the recessed part of the radiating patch which makes a capacitive coupling. It shows higher 511(-l4dB) and lower cross polarization level(-2OdB) compare with the conventional inset ftd patch antenna while having a similar characteristics in another evaluating items. Experimental results are examined and considered to apply to the S-Band application, and the effectiveness has been confirmed by FDTD simulation and measurement simultaneously.
BSTO Ferroelectric-Based Meander-Type Tunable Phase Shifter
Chai, Dongkyu ; Linh, Mai ; Yim, Munhyuk ; Yoon, Giwan ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 904~908
In this paper, we propose a 4-coupled ferroelectric-based meander-type microstrip-line tunable phase shifter which has less than 2dB of insertion loss (IL) and larger than 10dB of return loss (RL)over 13~170Hz .Particularly at 15GHz, the differential phase shift (DPS) is observed to be
at zero bias and it increases up to
when 150V is applied. This indicates a DPS tunability of
Non-Impulse Noise Reduction of Binary Image based on Morphological Arithmetic
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 909~914
In this thesis, noise reduction of image with impulse noise in circle image removed noise to harness existing median filter for noise reduction from image data of damage by noise when impulse noise is high or noise reduction is low, but it is not made up of noise reduction to harness existing median filter in case of existence of non-impulse noise. Therefore noise reduction of image with non-impulse noise had to remove noise by morphological arithmetic in this thesis's proposition. In contrast to median filtering, result of edge detection is more efficient after remove non-impulse noise by method of thesis's proposition and it compare and demonstrate through this experimentation.
An Implementation of Remote Examination System on Internet using lava/SWING
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 915~922
This paper presents an implementation of an Remote Examination System on Internet using Java and SWING GUI API. The system is consisted of three parts: generating examination part that is Java application, answering questions part that is Java Applet, reviewing results part that is Java Applet. The first part is implemented with the 2-tier client/server architecture and the last two parts is implemented the 3-tier client/server architecture. Database programming is done using Java JDBC API for database independence and portability. This system can be used the evaluation of lectures, and substituted for pen-and-pencil examinations or adopted to survey applications based on Internet.
Dialog System based on Speech Recognition for the Elderly with Dementia
Kim, Sung-Il ; Kim, Byoung-Chul ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 923~930
This study aims at developing dialog system to improve the quality of life of the elderly with a dementia. The proposed system mainly consists of three modules including speech recognition, automatic search of the time-sorted dialog database, and agreeable responses with the recorded voices of caregivers. For the first step, the dialog that dementia patients often utter at a nursing home is first investigated. Next, the system is organized to recognize the utterances in order to meet their requests or demands. The system is then responded with recorded voices of professional caregivers. For evaluation of the system, the comparison study was carried out when the system was introduced or not, respectively. The occupational therapists then evaluated a male subjects reaction to the system by photographing his behaviors. The evaluation results showed that the dialog system was more responsive in catering to the needs of dementia patient than professional caregivers. Moreover, the proposed system led the patient to talk more than caregivers did in mutual communication.
Video Conference System Construction that Apply Real Time Video Encryption Techniques
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 931~936
By emphasize and enhance security in encryption of same viewdata in this research, constructed video conference system that apply real time video encryption techniques that confidentiality and integrity aspect are emphasized than video conference system that depend on existent user certification techniques. Sender's image transmits Vernam's encryption process to listener by packet. Listener can display image through image's decipher process and uncompress after unite receiving transmited image. This time, solved transmission speed delay problem by video's real time encryption using Vernam's algorithm that encryption and the decipher speed are fast. Simplification problem of Vernam algorithm wished to solve Session Key that use security Key that is used encipherment and decipher in channel between Client and Server using RSA algorithm
The Effective Protection Mechanism for Digital Images using Transform of the Wavelet in Frequency Domain
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 937~942
The use of digital imaging technique and digital contents based on internet has grown rapidly for last several years, and the needs of digital image protection become more important. For the purpose of copyright protection on digital image, the verification of authentication techniques like content authentication, ownership authentication, illegal copy and etc are needed. Digital watermarking, the invisible encryption technique to insert digital watermark into image the sophisticated perceptual information should be used for providing transparency and robustness of images on watermarking process. In this paper, we implement the algorithm for preventing forged attack, ownership protection and authentication by transforming the wavelet algorithms in frequency domain in terms of human visual system.
Algorithm for Search Space Reduction based on Dynamic Heuristic Value Change
Kim, Hyung-Soo ; Moon, kyung-Seob ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 943~950
Real time strategy game is a computer game genre of Playing with human or computer opponents in real time It differs from turn-type computer games in the game process method. Turn type games, such as chess, allow only one Player to move at a time. Real time strategy games allow two or more Players to move simultaneously. Therefore, in real time strategy computer games, the game components' movement plans must be calculated very quickly in order to not disturb other processes such as gathering resources, building structures, and combat activities. There are many approaches, which can reduce the amount of memory required for calculating path, search space, and reactive time of components. (or units). However, existing path finding algorithms tend to concentrate on achieving optimal Paths that are not as important or crucial in real time strategy game. This Paper introduces Dynamic Heuristic Af(DHA*) algorithm which is capable of reducing search space and reactive time of game units and compares with A* algorithm using static heuristic weighting.
Effective Scene Change Detection Method for MuIUmedia Bata as Video Images using Mean Squared Error
Jung, Chang-Ryul ; Koh, Jin-Gwang ; Lee, Joon ;
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 951~957
When retrieving voluminous capacity of video image data, it is necessary to provide synopsized frame lists of video image data for indexing and replaying at the exact point where the user want to retrieve. We apply Mean Squared Error method to extract certain pixel value from diagonal direction of a frame. The RGB value of a pixel extracted from each frame is saved in a matrix form, and this frame is retrievedas a scene change point if the compared value of two points met the certain condition. Also implement the algorithm and provide a way to seize entire structure of video image and the point of scene changes. finally, we analyze and prove that our method has better performance compared with the others.
Design and Implementation of Connector for Distributed JavaBeans Component Integration in the CORBA Environment
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 958~965
Current research for software architecture views and models a software system as a set of components and connectors. Components are abstractions of system level computational entities. Connectors are abstractions of components interrelationships. In this paper, we focus on connectors for the JavaBeans-based systems that are built using object integration technologies like CORBA. We present connector model in JavaBeans-based system for object-oriented component integration. We start with a discussion of related work of software architecture research and object-oriented modeling that focuses on the description of component collaborations. We propose connectors as transferable abstractions of system level component interconnection and inter-operation.
An Object-Oriented Analysis and Design for Remote Examination System on Internet
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 966~973
This Pager presents an object-oriented analysis and design for Remote Examination System on Internet. The UML is used for describing the process of analyzing and designing the system. The system is composed of the parts: Question Generation part that professors make questions, Question Answer part that students answer the questions. By object-oriented analysis and design, the system inherits the advantages of object-oriented methodology. All the results are retained on database on server-side. This system can be integrated with the Cyber-University System, and substituted for off-line paper-based tests or adopted to on-line poll applications on Internet.
Implementation of the Function Block Builder for the Distributed Control System
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 974~979
There are so many kind of a control program that is applied in various process fields such as power generation plant, water treatment plant, incinerator plant, chemical plant, cement plant etc.. Because an engineer in field edits and changes and debugs and tests properly control programs using text-based control language, it is very hard for the him to apply to plant. Therefore, this research implemented a graphical tool for control program builder that is applicable to various plants and usable engineers having a little knowledge for control language. I wish to run more efficiently precision process control offering function that can see visual expression about flow of control signal and intermediate output values of control program displayed in screen using this implemented function block builder
Performance Analysis for Compression of Satellite Image Data using the Wavelet Transform
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 980~985
In this paper, we analyzed satellite image with a high resolution compression performance. We need much time in a fast processing on vast satellite image pixel data. On compressing and decompressing, we should keep the information about road, building, forest, etc. In conclusion, we did analyze and compare the performance of compression and decompression for JPEG and WSQ(wavelet scalar quantization) method. As a result, we knew that WSQ was more efficient than JPEG.
Recognition of Handwritten Numerals using Eigenvectors
Journal of the Korea Institute of Information and Communication Engineering, volume 6, issue 6, 2002, Pages 986~991
This paper presents off-line handwritten numeral recognition method by using Eigen-Vectors. In this method, numeral features are extracted statistically by using Eigen-Vectors through KL transform and input numeral is recognized in the feature space by the nearest-neighbor classifier. In our feature extraction method, basis vectors which express best the property of each numeral type within the extensive database of sample numeral images are calculated, and the numeral features are obtained by using this basis vectors. Through the experiments with the unconstrained handwritten numeral database of Concordia University, we have achieved a recognition rate of 96.2%