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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Korea Institute of Information, Electronics, and Communication Technology
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The Korea Institute of Information & Electronic Communication Technology
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Volume 9, Issue 4 - Aug 2016
Volume 9, Issue 3 - Jun 2016
Volume 9, Issue 2 - Apr 2016
Volume 9, Issue 1 - Feb 2016
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The Comparative Study of NHPP Software Reliability Model Based on Exponential and Inverse Exponential Distribution
Kim, Hee-Cheul ; Shin, Hyun-Cheul ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 133~140
DOI : 10.17661/jkiiect.2016.9.2.133
Software reliability in the software development process is an important issue. Software process improvement helps in finishing with reliable software product. Infinite failure NHPP software reliability models presented in the literature exhibit either constant, monotonic increasing or monotonic decreasing failure occurrence rates per fault. In this paper, we were proposed the reliability model with the exponential and inverse exponential distribution, which made out efficiency application for software reliability. Algorithm to estimate the parameters used to maximum likelihood estimator and bisection method, model selection based on mean square error (MSE) and coefficient of determination(
), for the sake of efficient model, were employed. Analysis of failure, using real data set for the sake of proposing the exponential and inverse exponential distribution, was employed. This analysis of failure data compared with the exponential and inverse exponential distribution property. In order to insurance for the reliability of data, Laplace trend test was employed. In this study, the inverse exponential distribution model is also efficient in terms of reliability because it (the coefficient of determination is 80% or more) in the field of the conventional model can be used as an alternative could be confirmed. From this paper, the software developers have to consider life distribution by prior knowledge of the software to identify failure modes which can be able to help.
A Comparative Study for NHPP Software Reliability Model based on the Shape Parameter of Flexible Weibull Extension Distribution
Kim, Hee-Cheul ; Shin, Hyun-Cheul ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 141~147
DOI : 10.17661/jkiiect.2016.9.2.141
NHPP software reliability models for failure analysis can have, in the literature, exhibit either constant, monotonic increasing or monotonic decreasing failure occurrence rates per fault. In this paper, infinite failures NHPP models that repairing software failure point in time reflects the situation, was presented for comparing property. Commonly used in the field of software reliability based on Flexible Weibull extension distribution software reliability of infinite failures was presented for comparison problem. The result is that a relatively small shaping parameter was effectively. The parameters estimation using maximum likelihood estimation was conducted and model selection was performed using the mean square error and the coefficient of determination.. In this research, software developers to identify software failure property follows shape parameter, some extent be able to help is considered.
Power Signal Monitering System with Compression Storage and Reconstruction
Bae, Hyeon-Deok ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 148~154
DOI : 10.17661/jkiiect.2016.9.2.148
In recent year, the interests of PQ is increase due to the increasing of non-linear load and distributed power sources in power system. For the parameters detection and feature extraction of PQ, and the PQ improvement method, continuous power signal monitering is needed. In this paper, the power signal compression and reconstruction method is suggested for power signal monitering. The power signal is compressed using DCT that has good compression performance, and the compressed signal is reconstructed through IDCT. And for the higher compression rate, DCT coefficients are arranged by magnitude in compression process, and in recouction process DCT coefficients are rearranged to original frequency position. The synthesized signal according to the IEC standard is used used in compression and reconstruction simulations. The performances of the proposed method are verified by comparing the error between synthesized signal and reconstructed signal.
Fabrication of the accelerometer using the nano-gap trench etching
Kim, Hyeon-Cheol ; Kwon, Hee-jun ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 155~161
DOI : 10.17661/jkiiect.2016.9.2.155
This paper proposes a novel fabrication method for a capacitive type micro-accelerometer with uniform nano-gap using photo-assisted electro-chemical etching. The sensitivity of the accelerometer should be improved while the electrodes between the inertial mass and the sensing comb should be narrowed. In this paper the nano-gap trench structure is fabricated using the photo-assisted electrochemical etching method. The sensor was designed and analysed using ANSYS simulator. The characteristics of the etching were observed according to the dc bias, the light intensity, the composition of the solution, the temperature of the solution, and the pattern pitch variation. The optimum etching conditions were dc bias of 2V, Blue LED of 20mA, 49wt% HF:DMF:D.I.Water=1:20:10, the pattern pitch of
. Uniform trench structure with width of 344nm and depth of
are formed using the optimum condition.
Timestamp based Key Exchange Protocol for Satellite Access Network
Song, In-A ; Lee, Young-seok ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 162~170
DOI : 10.17661/jkiiect.2016.9.2.162
The key exchange protocols are very important to provide the secure communication in broadband satellite access network. However key exchange protocol of ETSI(European Telecommunications Standards Institute) is vulnerable to man-in-the-middle-attack by using Diffie-Hellman algorithm. And the key exchange protocol using certification is not useful in satellite environment. We propose the key exchange protocol using Timestamp which have the resistant to man-in-the-middle-attack. Proposed protocol is able to prevent the man-in-the-middle-attack by calculated time value. Also showing experiment results, we prove that proposed protocol improve memory usage, communication amount and calculation amount than other protocols.
A Software Reliability Cost Model Based on the Shape Parameter of Lomax Distribution
Yang, Tae-Jin ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 171~177
DOI : 10.17661/jkiiect.2016.9.2.171
Software reliability in the software development process is an important issue. Software process improvement helps in finishing with reliable software product. Infinite failure NHPP software reliability models presented in the literature exhibit either constant, monotonic increasing or monotonic decreasing failure occurrence rates per fault. In this study, reliability software cost model considering shape parameter based on life distribution from the process of software product testing was studied. The cost comparison problem of the Lomax distribution reliability growth model that is widely used in the field of reliability presented. The software failure model was used the infinite failure non-homogeneous Poisson process model. The parameters estimation using maximum likelihood estimation was conducted. For analysis of software cost model considering shape parameter. In the process of change and large software fix this situation can scarcely avoid the occurrence of defects is reality. The conditions that meet the reliability requirements and to minimize the total cost of the optimal release time. Studies comparing emissions when analyzing the problem to help kurtosis So why Kappa efficient distribution, exponential distribution, etc. updated in terms of the case is considered as also worthwhile. In this research, software developers to identify software development cost some extent be able to help is considered.
A Study on Improving High-Power Induction Motor Starting
Son, Seok-Geum ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 178~184
DOI : 10.17661/jkiiect.2016.9.2.178
The motor power of the industry to use the electric energy is gradually increased. The electric motor generates a voltage drop in the starting current during startup. The starting current is started it is difficult to have an adverse effect on neighboring power systems with large motor starting when the voltage drop across the power grid. In addition to that the motor torque according to the load depending on the size of the rotation speed is changed to a motor start-up speed is important. However, the distance to the emergency generator transformers or motors from the motor capacity is smaller but short and difficult to maneuver the theory and practice of the operating characteristics of the starting characteristics of the motor used a lot of large industrial plants were measured and analyzed. Therefore, this study investigated the motor starting Analysis and interpretation for the relationship with the large motor starting torque and speed during motor starting.
The Study of Induction Heating Apparatus with High Efficiency
Cho, Hyun-Seob ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 185~189
DOI : 10.17661/jkiiect.2016.9.2.185
Energy-saving heat depending on the country's rise in oil prices up to the product development is regarded as pending issues. Therefore, in recent years, been a continuing research studies developed for increasing the economic efficiency and reliability achieved in effectively using the side of the energy for heating using electrical to address these problems and, in particular made active the technology developed for high performance and renal material becoming. This paper is to study the development of highly efficient induction heating device according to the excellent heat transfer characteristics for energy transfer. Induction heating is used as the phenomenon of electromagnetic induction, such as heat transfer conduction or convection of the existing methods are no different. Medium heat without beating is absorbed directly into the water column switched rapidly, have features that heats evenly. In addition, high-frequency induction heating in a variety of frame designs. Heating element heats only when utilized properly, it is possible to heat the focus.
A Study on Maximum Posterior Probability Estimator for Direction of Arrival Estimation of Incoming Signal
Lee, Kwan-Hyeong ; Park, Sung-Kon ; Jeong, Youn-Seo ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 190~195
DOI : 10.17661/jkiiect.2016.9.2.190
In this paper, we are comparative analysis both class method and proposal method in order to estimation of incident signal direction on uniform array antenna system. Proposal method of this paper decrease error probability for a signal direction of arrival estimation using maximum posterior probability estimator. If it decrease to signal estimation direction error probability, signal direction of arrival can correctly estimate. Through simulation, we were comparative analysis proposed method and class method. Also, we were comparative analysis about signal estimation error probability with increasing array antenna element. We show the superior performance of the proposed method relative to the class method to decrease of signal estimation error probability about 12%.
Performance evaluation of vessel extraction algorithm applied to Aortic root segmentation in CT Angiography
Kim, Tae-Hyong ; Hwang, Young-sang ; Shin, Ki-Young ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 196~204
DOI : 10.17661/jkiiect.2016.9.2.196
World Health Organization reported that heart-related diseases such as coronary artery stenoses show the highest occurrence rate which may cause heart attack. Using Computed Tomography angiography images will allow radiologists to detect and have intervention by creating 3D roadmapping of the vessels. However, it is often complex and difficult do reconstruct 3D vessel which causes very large amount of time and previous researches were studied to segment vessels more accurate automatically. Therefore, in this paper, Region Competition, Geodesic Active Contour (GAC), Multi-atlas based segmentation and Active Shape Model algorithms were applied to segment aortic root from CTA images and the results were analyzed by using mean Hausdorff distance, volume to volume measure, computational time, user-interaction and coronary ostium detection rate. As a result, Extracted 3D aortic model using GAC showed the highest accuracy but also showed highest user-interaction results. Therefore, it is important to improve automatic segmentation algorithm in future
Implementation of Multichannel Digital Hearing Aid Algorithm Development Platform using Simulink
Byun, Jun ; Min, Ji-hwan ; Cha, Tae-hwan ; Ji, You-na ; Park, Young-cheol ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 205~212
DOI : 10.17661/jkiiect.2016.9.2.205
In this paper, we implement the development platform of multichannel digital hearing aid algorithm using Simulink provided by Matlab. The digital hearing aids are considered medical devices designed to compensate for hearing loss, they need to be correctly selected, to help a person who has difficulty in hearing. The development platform that implemented in this paper, includes WOLA filterbank for analysis/synthesis of input signal, Wide dynamic range compression for hearing loss compensation and adaptive filter for feedback cancellation. Using the development platform, algorithm parameters for each block can be set depending on the hearing aid user. Thus it is possible to test the algorithm before the machine language. As a result, the time for algorithm development can be saved and performance and computational complexity can be optimized.
A Study on Policy Stream Model Using the Multi-cultural Family Support Law
Bae, Seon-sik ; Jeong, Jin-Gyeong ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 213~222
DOI : 10.17661/jkiiect.2016.9.2.213
The policy agenda setting is the symbolic policy of representing the public at home and abroad in addition to what a role of the government and the ruling party made a great contribution out of a political stream, rather than the policy that was formed by external group. Especially, a policy for migrant workers and married immigrant women is the important policy that will need to be solved in the global era. Accordingly, the purpose of this study is to confirm a factor, which had a decisive influence upon a policy, by examining the decision-making process of 'policy for the married immigrant women' with which the government pushes ahead. A specific plan for achieving this research objective is as follows. It progresses a theoretical discussion about the multi-cultural policy in south Korea and discusses the process that the multi-cultural policy is formed. The advancing stage includes the process of forming a multi-cultural discourse, the differentiation process that a multi-cultural discourse is diversely formed, and the process of being made a policy of multi-cultural discourse, which had been formed by section.
Finger Tip Recognition Algorithm in Digital Micromirror System
Choi, Jong-ho ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 223~228
DOI : 10.17661/jkiiect.2016.9.2.223
A digital micromirror system was proposed for future smart learning. This system is the compact micro-projector with a built-in CMOS sensor modules. It can provide the various interfaces. The basis of interface is to recognize the finger tip on projected image. But the recognition rate of finger tip is very low due to various image degradations. In this paper, we propose the finger tip recognition algorithm that minimize the image degradation factors by using the Retinex transform and IR structuring light. By verifying the availability of the algorithm through experiment, the performance of finger tip recognition was confirmed. Therefore, the user interface can be able to be enhanced significantly in DMS.
Remote Drawing Technology Based on Motion Trajectories Analysis
Leem, Seung-min ; Jeong, Hyeon-seok ; Kim, Sung-young ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 229~236
DOI : 10.17661/jkiiect.2016.9.2.229
In this paper, we suggest new technology that can draw characters at a long distance by tracking a hand and analysing the trajectories of hand positions. It's difficult to recognize the shape of a character without discriminating effective strokes from all drawing strokes. We detect end points from input trajectories of a syllable with camera system and localize strokes by using detected end points. Then we classify the patterns of the extracted strokes into eight classes and finally into two categories of stroke that is part of syllable and not. We only draw the strokes that are parts of syllable and can display a character. We can get 88.3% in classification accuracy of stroke patterns and 91.1% in stroke type classification.
Design of U-healthcare System based on Smart-Cloth
Cho, Byung-Ho ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 237~242
DOI : 10.17661/jkiiect.2016.9.2.237
To build effective u-healthcare system based-on smart-cloth, design of hardware and software modules for suitable smart-cloth is needed. And a gateway smart-phone program for sensing signal's collecting and processing is needed to send sensing bio-signal from smart-cloth to sever. To do this, it is an important to design and describe modules well for having no difficult problems when implementing later. Also, if medical team do not monitor bio-signals sending from smart-phone frequently and these signals' change values which diagnose automatically due to building expert system based on rules/facts is informed for users, it will be an useful u-healthcare system. Therefore in this paper, by presenting design method of u-healthcare system hardware and software modules based on smart-cloth which prepared these functions, this design method is showed for applying a common use u-healthcare system's production usefully.
Drivers Driving Habits Data and Risk Group Cluster Analysis
Kim, Yong-Chul ;
The Journal of Korea Institute of Information, Electronics, and Communication Technology, volume 9, issue 2, 2016, Pages 243~247
DOI : 10.17661/jkiiect.2016.9.2.243
Driving Event Data such as the rapid acceleration, the rapid deceleration, the sudden braking, and the sudden departure, and over speeding provide important information to predict or analyze the driving habits and accident risk of a driver. Most of the data that represent the driver's driving habits generally fit to the parametric distribution, whereas extreme parts of the data to estimate the accident risk of a driver may not. This paper presents an empirical distribution that is divided into two regions, one is from the normal distribution, and the other is from the general pareto distribution for the driving habits of a driver.