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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of information and communication convergence engineering
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Journal DOI :
The Korean Institute of Information and Commucation Engineering
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Volume & Issues
Volume 9, Issue 6 - Dec 2011
Volume 9, Issue 5 - Oct 2011
Volume 9, Issue 4 - Aug 2011
Volume 9, Issue 3 - Jun 2011
Volume 9, Issue 2 - Apr 2011
Volume 9, Issue 1 - Feb 2011
Selecting the target year
Analysis of P300 Related Target Choice in Oddball Paradigm
Jang, Yun-Seok ; Ryu, Soo-Ah ; Park, Kyu-Chil ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 125~128
DOI : 10.6109/jicce.2011.9.2.125
P300 component of the event-related brain potential (ERP) reflects fundamental cognitive processes. The P300 components have been employed in a wide variety of theoretical, empirical, and clinical applications. In oddball paradigm for eliciting P300, we need standard stimuli and target stimuli. Firstly, designated stimuli are presented to subjects. Nextly, a chosen target stimulus is presented. In this paper, we elicited the P300 components with experiment that the subjects select a chosen target stimulus. Therefore, we measured the P300 components to be related choice of the target stimuli. The experimental results and the P300 components to be analyzed were presented.
Study on Museum Digital Exhibition Mode and Industrialization of Intangible Cultural Heritage
Bai, Jian-Song ; Boo, Jong-Chul ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 129~134
DOI : 10.6109/jicce.2011.9.2.129
Nowadays, most of exhibits are material antiquities while the exhibit of intangible cultural heritage is deficient and the form is less advanced which cannot meet the exhibition needs of digital times. This has resulted in insufficient display of intangible heritage's value which may not facilitate inherit and protection of intangible heritage, no other than protection mechanism of forming healthy industrialization. This article has established digital exhibition mode in museum about intangible cultural heritage by analysis on current museum and using mobile communication and augmented reality techniques. Discuss the mode in the layer integrating creative industry and mobile industry and provide practicable reference project of forming the healthy industrialization mechanism for protecting intangible heritage.
An Empirical Study on the Performance of Software Company with Software Type
Jang, Sung-Hee ; Lee, Dong-Man ; Choi, Moon-Jong ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 135~140
DOI : 10.6109/jicce.2011.9.2.135
The purpose of this study is to examine the factors influencing performance of software companies. This model tests various theoretical research hypotheses related to innovation, standardization and technology marketing strategy and software type. Smart PLS (Partial Least Square) 2.0 and SPSS 15.0 have been utilized for deriving the study results. The result of hypothesis testing is as follows. First, standardization and technology marketing strategy positively influence financial performance. Second, innovation, standardization and technology marketing strategy positively influence technical performance. Finally, mobile and non-mobile software companies was shown that innovation, standardization, and technology marketing strategy has different effects to financial and technical performance.
Compromise Scheme for Assigning Tasks on a Homogeneous Distributed System
Kim, Joo-Man ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 141~149
DOI : 10.6109/jicce.2011.9.2.141
We consider the problem of assigning tasks to homogeneous nodes in the distributed system, so as to minimize the amount of communication, while balancing the processors' loads. This issue can be posed as the graph partitioning problem. Given an undirected graph G=(nodes, edges), where nodes represent task modules and edges represent communication, the goal is to divide n, the number of processors, as to balance the processors' loads, while minimizing the capacity of edges cut. Since these two optimization criteria conflict each other, one has to make a compromise between them according to the given task type. We propose a new cost function to evaluate static task assignments and a heuristic algorithm to solve the transformed problem, explicitly describing the tradeoff between the two goals. Simulation results show that our approach outperforms an existing representative approach for a variety of task and processing systems.
Design of Coupled Resonators Bandpass Filter with Defected Ground Structure
Kim, Gi-Rae ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 150~154
DOI : 10.6109/jicce.2011.9.2.150
In this paper a four-pole elliptic function bandpass filter is designed with two ground slots. A research of microstrip bandpass filters (BPF) using defected ground structures (DGS) is presented. DGS technique allows designs of tight couplings without the necessity of using very narrow coupling gaps. The simulator Sonnet is used to design the resonator and to calculate the coupling coefficient of the basic coupling structure. Compared to similar microstrip filters without defected ground structure, the simulated performances of these novel structures indicate some technological advantages.
Quantization-aware Sensor Selection for Source Localization in Sensor Networks
Kim, Yoon-Hak ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 155~160
DOI : 10.6109/jicce.2011.9.2.155
In distributed source localization where sensors transmit measurements to a fusion node, we address the sensor selection problem where the goal is to find the best set of sensors that maximizes localization accuracy when quantization of sensor measurements is taken into account. Since sensor selection depends heavily upon rate assigned to each sensor, joint optimization of rate allocation and sensor selection is required to achieve the best solution. We show that this task could be accomplished by solving the problem of allocating rates to each sensor so as to minimize the error in estimating the position of a source. Then we solve this rate allocation problem by using the generalized BFOS algorithm. Our experiments demonstrate that the best set of sensors obtained from the proposed sensor selection algorithm leads to significant improvements in localization performance with respect to the set of sensors determined from a sensor selection process based on unquantized measurements.
A Study on Vocal Separation from Mixtured Music
Kim, Hyun-Tae ; Park, Jang-Sik ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 161~165
DOI : 10.6109/jicce.2011.9.2.161
Recently, According to increasing interest to original sound Karaoke instrument, MIDI type karaoke manufacturer attempt to make more cheap method instead of original recoding method. Separating technique for singing voice from music accompaniment is very useful in such equipment. We propose a system to separate singing voice from music accompaniment for stereo recordings. Our system consists of three stages. The first stage is a spectral change detector. The second stage classifies an input into vocal and non vocal portions by using GMM classifier. The last stage is a selective frequency separation stage. The results of removed by listening test from the results for computer based extraction simulation, spectrogram results show separation task successfully. Listening test with extracted MR from proposed system show vocal separating and removal task successfully.
Design Issues of Spectrum Sensing in Cognitive Radio Networks
Kang, Bub-Joo ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 166~171
DOI : 10.6109/jicce.2011.9.2.166
This paper investigates the design issues of spectrum sensing in the cognitive radio (CR) networks of opportunistic unlicensed spectrum access. The cognitive radios can perform a communication using the incumbent user spectrum band without the interference caused by the cognitive radio users. In this case, the cognitive radios must know the real-time radio environments of the incumbent user spectrum band using the spectrum sensing, beacon signal, and geo-location database access. Then in this paper, we are going to provide spectrum sensing issues which include the sensing techniques, the regulatory requirements, the analysis of DTV detection threshold, and main considerations associated with the spectrum sensing design in cognitive radio systems. Also, this paper introduces design trade-offs in order to optimize the sensing parameters such as sensing time and sensing complexity.
Weight Decision Scheme based on Slot-Count in Gen-2 Q-Algorithm
Lim, In-Taek ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 172~176
DOI : 10.6109/jicce.2011.9.2.172
In the Gen-2 Q-algorithm, the values of weight C, which is the parameter for incrementing or decrementing the slot-count size, are not optimized in the standard. However, the standard suggests that the reader uses small values of C when the slot-count is large and larger values of C when the slot-count is small. In this case, if the reader selects an inappropriate weight, there are a lot of empty or collided slots. As a result, the performance will be declined because the frame size does not converge to the optimal point quickly during the query round. In this paper, we propose a scheme to select the weight based on the slot-count size of current query round. Through various computer simulations, it is demonstrated that the proposed scheme achieves more stable performances than Gen-2 Q-algorithm.
Unified Identification for Event Driven Service in User-Centric Environments
Lee, Soong-Hee ; Kim, Dong-Il ; Jeon, Hyung-Goo ; Jang, Jong-Wook ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 177~182
DOI : 10.6109/jicce.2011.9.2.177
Considerations for user-centric environments are regarded as essential for the successful deployment of convergence services in BcN. Event driven service (EDS) is regarded as a typical convergence service converging different functions of multiple service providers to support user-centric environments. This paper first describes the deployment model and service scenario of EDS, a convergence service for user-centric environments in BcN. The user-centric environments stimulates the unified identifier management, namely unified identification (U-ID), to enable users to be provided convergence services without awareness of multiple providers. Then the designed structure and implementation results are given.
Feedback Error Quantification in Adaptive Modulation over Fading Channels
Choi, Se-Yeong ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 183~186
DOI : 10.6109/jicce.2011.9.2.183
In this work, we consider imperfectness of feedback channels in the adaptive transmission scheme which was previously studied with an assumption of error-free feedback channels. New method of mapping the modulation index into the feedback channel symbols and quantifying feedback error over fading channels are proposed. The presented method and results are expected to offer valuable tools for the system designer to efficiently implement adaptive diversity schemes to compensate for the performance degradation due to feedback error.
A Security Framework for Archiving the Permission of Mobile Terminal in Wireless Environment
Byun, Byung-Kil ; Lee, Ki-Young ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 187~192
DOI : 10.6109/jicce.2011.9.2.187
Traditional voice traffic over mobile communication has been changed into data and media contents traffic, which makes traffic amount increases and speedy data transfer required. In the near future ubiquitous mobile terminal environment will be common so that security issues will arise due to many heterogeneous equipments and connections. In this paper, many previous methods used for terminal authentication are examined. And we propose new system model which uses our novel user authentication protocol based on strong one-time password (OTP) and short message service (SMS). We verify our system model and protocol by implementation.
Transmit Antenna Selection for Multi-user MIMO Precoding Systems with Limited Feedback
Mohaisen, Manar ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 193~196
DOI : 10.6109/jicce.2011.9.2.193
Transmit antenna selection techniques are prominent since they exploit the spatial selectivity at the transmitter side. In the literature, antenna selection techniques assume full knowledge of the channel state information (CSI). In this paper, we consider that the CSI is not perfectly known at the transmitter; however, a quantized version of the channel coefficients is fed back by the users. We employ the non-uniform Lloyd-Max quantization algorithm which takes into consideration the distribution of the channel coefficients. Simulation results show that the degradation in the BER of the system with imperfect CSI at the transmitter is tolerable, especially when the transmit diversity order is high.
Synthesis of Multi-View Images Based on a Convergence Camera Model
Choi, Hyun-Jun ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 197~200
DOI : 10.6109/jicce.2011.9.2.197
In this paper, we propose a multi-view stereoscopic image synthesis algorithm for 3DTV system using depth information with an RGB texture from a depth camera. The proposed algorithm synthesizes multi-view images which a virtual convergence camera model could generate. Experimental results showed that the performance of the proposed algorithm is better than those of conventional methods.
An Adaptive Occluded Region Detection and Interpolation for Robust Frame Rate Up-Conversion
Kim, Jin-Soo ; Kim, Jae-Gon ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 201~206
DOI : 10.6109/jicce.2011.9.2.201
FRUC (Frame Rate Up-Conversion) technique needs an effective frame interpolation algorithm using motion information between adjacent neighboring frames. In order to have good visual qualities in the interpolated frames, it is necessary to develop an effective detection and interpolation algorithms for occluded regions. For this aim, this paper proposes an effective occluded region detection algorithm through the adaptive forward and backward motion searches and also by introducing the minimum value of normalized cross-correlation coefficient (NCCC). That is, the proposed scheme looks for the location with the minimum sum of absolute differences (SAD) and this value is compared to that of the location with the maximum value of NCCC based on the statistics of those relations. And, these results are compared with the size of motion vector and then the proposed algorithm decides whether the given block is the occluded region or not. Furthermore, once the occluded regions are classified, then this paper proposes an adaptive interpolation algorithm for occluded regions, which still exist in the merged frame, by using the neighboring pixel information and the available data in the occluded block. Computer simulations show that the proposed algorithm can effectively classify the occluded region, compared to the conventional SAD-based method and the performance of the proposed interpolation algorithm has better PSNR than the conventional algorithms.
Global Feature Extraction and Recognition from Matrices of Gabor Feature Faces
Odoyo, Wilfred O. ; Cho, Beom-Joon ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 207~211
DOI : 10.6109/jicce.2011.9.2.207
This paper presents a method for facial feature representation and recognition from the Covariance Matrices of the Gabor-filtered images. Gabor filters are a very powerful tool for processing images that respond to different local orientations and wave numbers around points of interest, especially on the local features on the face. This is a very unique attribute needed to extract special features around the facial components like eyebrows, eyes, mouth and nose. The Covariance matrices computed on Gabor filtered faces are adopted as the feature representation for face recognition. Geodesic distance measure is used as a matching measure and is preferred for its global consistency over other methods. Geodesic measure takes into consideration the position of the data points in addition to the geometric structure of given face images. The proposed method is invariant and robust under rotation, pose, or boundary distortion. Tests run on random images and also on publicly available JAFFE and FRAV3D face recognition databases provide impressively high percentage of recognition.
Watermarking Based on Complemented MLCA and 2D CAT
Li, Xiao-Wei ; Yun, Jae-Sik ; Cho, Sung-Jin ; Kim, Seok-Tae ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 212~216
DOI : 10.6109/jicce.2011.9.2.212
Digital watermarking has gained importance in recent years in copyright protection and multimedia. This paper proposes a secure and novel watermarking system based on complemented Maximum Length Cellular Automata (MLCA) and Two-Dimension Cellular Automata Transform (2D CAT). In this watermarking scheme, the original watermark is first encrypted by complemented MLCA with the private keys, and then the encrypted watermark is embedded into the CAT domain of the cover image, at last use the inverse CAT for the transformed image, the watermarked image is obtained. Experiment results show that this new method is more secure and provides robust performance against watermarking attacks.
Study on the Formation of SiOC Films and the Appropriate Annealing Temperature
Oh, Teresa ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 217~219
DOI : 10.6109/jicce.2011.9.2.217
As silicon devices shrink and their density increases, the low dielectric constant materials instead of
film is required. SiOC film as low-k films was deposited by the capacitively coupled plasma chemical vapor deposition and then annealed at
to find out the properties of the dependence on the temperature and polarity. This study researched the dielectric constant using by the structure of the metal/SiOC film/p-Si, chemical shift, thickness, refractive index and hardness. The trend of reflective index was inverse proportioned the thickness, but the dielectric constant was proportioned it. The dielectric constant decreased with decreasing the thickness and the increment of the refractive index.
Design of ICA to Extract Respiration Signal From PPG Signal
Lee, Ju-Won ; Lee, Byeong-Ro ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 220~223
DOI : 10.6109/jicce.2011.9.2.220
Respiration signal of the vital signs is an important parameter in clinical parts. To extract the respiration signal from PPG signal for mobile healthcare system is difficult because the bands of the motion artifacts and respiration in the frequency domain are overlapped. This study to improve this problem suggested a respiration extraction method using the independent component analysis and evaluated its performances. In results of evaluation, the ICA method showed better performance than LPF suggested recently.
Noise Reduction of Image Using Sequential Method of Cellular Automata
Kim, Tai-Suk ; Lee, Seok-Ki ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 224~229
DOI : 10.6109/jicce.2011.9.2.224
Cellular Automata is a discrete dynamical system that can be completely described in terms of local relation. For any given image, the system can save its features as well as increase or decrease the brightness of it locally through consideration of optimized transition in succession. These transitions in succession satisfy the function "Lyapunov" and have sequential movements. This study suggests the way of noise reduction for each image with the use of the Sequential Cellular Automata system. The mentioned transition in succession gives stable results with high-convergence performance to random noises and PSNR (Peak Signal-to-Noise Ratio) using histograms and MSE (Mean Square Error) for verification of effectiveness.
A Study on Risk Response against Ship Fire using Robot
Park, Dea-Woo ; Park, Young-Suk ; Nam, Jae-Min ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 230~234
DOI : 10.6109/jicce.2011.9.2.230
It is endeavoring for sea safety and fire at sea prevention solidifying control of standard technology and safety supervision aspect in IMO but sea accident and ship fire are happening continuously. Because using Robot in artistic talent of ship in this treatise, studied that correspond to Risk and manage. Attach fire perception sensor for Robot's Risk confrontation, and because using infrared rays sensor, TOUCH SWITCH, sound perception sensor, gas perception sensor, light perception sensor that is threaded in Robot and is achieved, controlled Robot, and establish Low-High value the speed of sound output use and DC MOTOR and COM SEN of when indicate Risk confrontation to Robot and establish Robot's Risk confrontation administration action.
A Personalized Healthcare Analysis System in Ubiquitous Environment
Sain, Mangal ; Chung, Wan-Young ; Lee, Hoon-Jae ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 235~243
DOI : 10.6109/jicce.2011.9.2.235
With the recent trends and the adaptation of further advancement in personal healthcare system leads to develop some application which can work independent and user can operate that application without much interference of physician or any specialist user. To meet these needs, this paper proposes and implements a progressive architecture for the personal healthcare information system. This new architecture will not only play the role of middleware but also provide a analysis tool to process that different sensor data which is collected from different sensors implemented on patient body and environment. After collecting that data, with the help of various developed applications this data can be convert into useful information which will be stored in application server for further use and research. These features can be enabled by simple and effortless interactions of normal users and act autonomously to support their activities. This proposed personal healthcare architecture will also provide analysis report to the doctors and patient or various users for further instructions. The analysis report consists of healthcare data analysis results and history of patients. We are considering healthcare data like ECG, which is an important aspect for basic healthcare need.
Reliable Gossip Zone for Real-Time Communications in Wireless Sensor Networks
Li, Bijun ; Kim, Ki-Il ;
Journal of information and communication convergence engineering, volume 9, issue 2, 2011, Pages 244~250
DOI : 10.6109/jicce.2011.9.2.244
Gossip is a well-known protocol which was proposed to implement broadcast service with a high reliability in an arbitrarily connected network of sensor nodes. The probabilistic techniques employed in gossip have been used to address many challenges which are caused by flooding in wireless sensor networks (WSNs). However, very little work has yet been done on real-time wireless sensor networks which require not only highly reliable packets reception but also strict time constraint of each packet. Moreover, the unique energy constraining feature of sensor makes existing solutions unsuitable. Combined with unreliable links, redundant messages overhead in real-time wireless sensor networks is a new challenging issue. In this paper, we introduce a Reliable Gossip Zone, a novel fine-tailored mechanism for real-time wireless sensor networks with unreliable wireless links and low packet redundancy. The key idea is the proposed forwarding probability algorithm, which makes forwarding decisions after the realtime flooding zone is set. Evaluation shows that as an oracle broadcast service design, our mechanism achieves significantly less message overhead than traditional flooding and gossip protocols.