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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of the Korea institute of electronic communication sciences
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Journal DOI :
The Korea Institute of Electronic Communication Science
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Volume & Issues
Volume 10, Issue 12 - Dec 2015
Volume 10, Issue 11 - Nov 2015
Volume 10, Issue 10 - Oct 2015
Volume 10, Issue 9 - Sep 2015
Volume 10, Issue 8 - Aug 2015
Volume 10, Issue 7 - Jul 2015
Volume 10, Issue 6 - Jun 2015
Volume 10, Issue 5 - May 2015
Volume 10, Issue 4 - Apr 2015
Volume 10, Issue 3 - Mar 2015
Volume 10, Issue 2 - Feb 2015
Volume 10, Issue 1 - Jan 2015
Selecting the target year
A Study on Architecture Design of Output Module for SIL4 Safety Related System
Yoo, Deung-Ryeol ; Hwang, Kyeng-Hwan ; Lee, Key-Seo ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1079~1086
DOI : 10.13067/JKIECS.2015.10.10.1079
This paper introduces the architecture of OUTPUT module that is suitable using in safety related system having SIL4 and proposes the quantitative target that is required for OUTPUT module. Especially, only output type that is made up Relay output signal and analog signal among various output ways is applied in output module that is a part of safety related system. The FMEA(Failure Modes and Effect Analysis), FTA(Fault Tree Analysis) are used as analysis method. As a result, it proposes to the architecture and failure frequency of the Output module that is used in SIL4 safety related system.
Mutual Authentication between the mobile node in Ad-hoc Network
Choi, Woo-Jin ; Seok, Gyeong-Hyu ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1087~1092
DOI : 10.13067/JKIECS.2015.10.10.1087
It was diversified demand for a wireless network to the rapid growth of the Internet, the time and space that are not in the new level of Internet technology, limits the Ad-hoc networks are needed. Ad-hoc networks do not communicate with the central station, each of the mobile nodes included in the network communicate with each other by the relay role. In recent years, the Ad-hoc wireless networks in a variety of routing protocols and network security, research is actively underway for the authentication method, but the security of wireless Internet and Ad-hoc networks, certification is incomplete situation. This paper considers the authentication and key agreement technique applicability of the USIM card using the DSR routing protocol of the Java Card and Ad-hoc networks, we propose a secure authentication mechanism between the mobile node.
Fast Factorization Methods based on Elliptic Curves over Finite Fields
Kim, Yong-Tae ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1093~1100
DOI : 10.13067/JKIECS.2015.10.10.1093
Since the security of RSA cryptosystem depends on the difficulty of factoring integers, it is the most important problem to factor large integers in RSA cryptosystem. The Lenstra elliptic curve factorization method(ECM) is considered a special purpose factoring algorithm as it is still the best algorithm for divisors not greatly exceeding 20 to 25 digits(64 to 83 bits or so). ECM, however, wastes most time to calculate
mod N and so Montgomery and Koyama both give fast methods for implementing
mod N. We, in this paper, further analyze Montgomery and Koyama's methods and propose an efficient algorithm which choose the optimal parameters and reduces the number of multiplications of Montgomery and Koyama's methods. Consequently, the run time of our algorithm is reduced by 20% or so than that of Montgomery and Koyama's methods.
Method and system for providing virtual computer environment for the network division
Yoon, Tae-Ho ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1101~1108
DOI : 10.13067/JKIECS.2015.10.10.1101
In this paper, to provide a method and system for providing a network separation virtual machine environment. How to provide this virtual machine environment include phase generating necessary virtual resource requirement for the perform of virtual function and transfer to network changing protocol about request of registration virtual resource. For this reason, Registration procedure is to use a virtual machine for a virtual computing resource allocation and separation combined network any time, it became possible between servers and clients, or mobile phone. At any time, it is possible to process the work in the same environment as in a computer to access the Internet.
Design and Implementation of Web Contents Management System based on RIA
Seo, Jun-Oh ; Kim, Chul-Won ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1109~1114
DOI : 10.13067/JKIECS.2015.10.10.1109
The Design of Method for Efficient Processing of Small Files in the Distributed System based on Hadoop Framework
Kim, Seung-Hyun ; Kim, Young-Geun ; Kim, Won-Jung ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1115~1122
DOI : 10.13067/JKIECS.2015.10.10.1115
Hadoop framework was designed to be suitable for processing very large files. On the other hand, when processing the Small Files, it waste the resource of a distributed system, and occur performance degradation. It is shown noticeable the more the Small Files. This problem is caused by the Small Files, it can be solved through the merging of associated Small Files. But a way of merging of Small Files has some limited point. in this paper, examines existing limit of merging method, design merging method Small Files for effective process.
Mesochronous Clock Based Synchronizer Design for NoC
Kim, Kang-Chul ; Chong, Jiang ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1123~1130
DOI : 10.13067/JKIECS.2015.10.10.1123
Network on a chip(NoC) is a communication subsystem between intellectual property(IP) cores in a SoC and improves high performance in the scalability and the power efficiency compared with conventional buses and crossbar switches. NoC needs a synchronizer to overcome the metastability problem between data links. This paper presents a new mesochronous synchronizer(MS) which is composed of selection window generator, selection signal generator, and data buffer. A delay line circuit is used to build selection window in selection window generator based on the delayed clock cycle of transmitted clock and the transmitted clock is compared with local clock to generate a selection signal in the SW(selection window). This MS gets rid of the restriction of metastability by choosing a rising edge or a falling edge of local clock according to the value of selection signal. The simulation results show that the proposed MS operates correctly for all phase differences between a transmitted clock and a local clock.
The case study for Implementation and verification of Dynamic NAT and PAT
Kim, No-Whan ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1131~1138
DOI : 10.13067/JKIECS.2015.10.10.1131
As the size of the internet market grows rapidly, the number of IPv4 addresses available is being exhausted, while transition to IPv6 is being delayed. As the best alternative solution, Network Address Translation(NAT) scheme is being used. It connects the public internet network with the private internet network in order to reduce the waste of IPv4 addresses space. The purpose of this paper is to study the effective example of network based on common virtual network using Packet Tracer with topology designed rather than usual theoretical approach in Dynamic NAT and PAT, which allows more efficient use of address space.
A Smart Home Prototype Implementation Using Raspberry Pi
Kim, Jeong-Won ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1139~1144
DOI : 10.13067/JKIECS.2015.10.10.1139
The internet of things(: IoT) which could produce new information as well as service through connecting small devices with internet interface becomes reality and could be utilized in home, office and plant. Especially the IoT can provide our home for safety, security, convenience, and power saving since all devices form a small internet. This paper proposes an IoT prototype for home with Raspberry Pi which has various sensors and monitors environment. This Raspberry Pi sensor node is small and inexpensive but can provide powerful service. The implemented node goes beyond simple role of sensor node and features a kind of sensor web node which performs various functions to outer network. So the proposed IoT prototype can provide flexibility as well as extensibility since it does not need expensive server.
Design and Implementation of Produce Farming Field-Oriented Smart Pest Information Retrieval System based on Mobile for u-Farm
Kang, Ju-Hee ; Jung, Se-Hoon ; Nor, Sun-Sik ; So, Won-Ho ; Sim, Chun-Bo ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1145~1156
DOI : 10.13067/JKIECS.2015.10.10.1145
There is a shortage of mobile application systems readily applicable to the field of crop cultivation in relation to diseases and insect pests directly connected to the quality of crops. Most of system have been devoted to diseases and insect pests that would offer full predictions and basic information about diseases and insect pests currently. But for lack of the instant diagnostic functions seriously and the field of crop cultivation, we design and implement a crop cultivation field-oriented smart diseases and insect pests information retrieval system based on mobile for u-Farm. The proposed system had such advantages as providing information about diseases and insect pests in the field of crop cultivation and allowing the users to check the information with their smart-phones real-time based on the Lucene, a search library useful for the specialized analysis of images, and JSON data structure. And it was designed based on object-oriented modeling to increase its expandability and reusability. It was capable of search based on such image characteristic information as colors as well as the meta-information of crops and meta-information-based texts. The system was full of great merits including the implementation of u-Farm, the real-time check, and management of crop yields and diseases and insect pests by both the farmers and cultivation field managers.
A development of the maintenance function for the solar power plant based on IoT
Nam, Kang-Hyun ; Jeong, Moon-Jae ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1157~1162
DOI : 10.13067/JKIECS.2015.10.10.1157
The maintenance function of Solar power plant is configured with Sensor devices, Gateway, and Maintenance Function Platform. In this paper, we designed gateway resource tree and service scenario to fit the Maintenance Function and demonstrated appropriate operation of the maintenance service through intelligent functional modeling.
The Effect of Task oriented Imagination Training on the Function of Upper limb and Daily Activities of Chronic Stroke Patients
Son, Young-Hyo ; Kim, Seung-Il ; Jung, Hwa-Shik ; Park, Soo-Hee ; Chung, Hyun-Ae ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1163~1174
DOI : 10.13067/JKIECS.2015.10.10.1163
This study is aimed at identifying the effect the task-oriented imagination training of chronic stroke patients have on the function of upper limb and their daily activities(: ADL). The research subjects were composed of 30 chronic stroke patients with over three months of ailment history, with each group composed of 15 patients assigned to the experiment group and the control group, respectively. The experiment group was subjected to the task-oriented training and the imagination training at the same time, while the control group was subjected to the task-oriented training only. All Interventions were performed for 5 times per week over the period of 8 weeks and 30 minutes per session. In order to monitor the changes as a result of the Intervention program, the MFT and OPTIMAL were employed for the upper limb function while the MBI was employed for the ADL to measure the values before and after the Intervention, respectively, with the results shown below. As a result, MFT, OPTIMAL and MBI showed significant difference between before and after in group. And Mental practice group showed more improvement.
Internet of Things(IoT) ON system implementation with minimal Arduino based appliances standby power using a smartphone alarm in the environment
Park, Se-Eon ; Hwang, Chan-Gyu ; Park, Dong-Cheul ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1175~1182
DOI : 10.13067/JKIECS.2015.10.10.1175
This paper has been an era of full-fledged objects Internet of Things(IoT), which involved the subject of this communication in the communication paradigm of the human heart. Things Arduino-based appliances ON, the system was implemented using the smartphone alarm in the Internet environment. All appliances even if plug connected to an external power source only standby power is present. This system is used for communication with the Arduino things. Connect the appliances power automatically rings the smartphone alarm minimize appliances standby power to things all by ON automatically connected to the Arduino, and the work of giving consumer electronics devices to help weather that automatically operates by Objects is an Internet system.
Design of FM-QCSK Chaotic Communication System for high-speed communication
Jang, Eun-Young ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1183~1188
DOI : 10.13067/JKIECS.2015.10.10.1183
The FM-QCSK(: Frequency Modulated Quadrature Chaos Shift Keying) system is one of the most efficient systems in chaotic literature. One of the problems in this system is that half the bit duration is used for sending a chaotic reference signal which leads to increase the energy losses and reduces the data rate. In this paper, a novel scheme to enhance the performance of FM-QCSK system has been proposed. With the proposed scheme, FM-QCSK would be able to operate at higher data rates with reduced BER(: Bit Error Rate) and energy consumption. The basic modification introduced by the proposed scheme is the use one reference chaotic signal to transmit multi information signals in both in-phase and quadrature-phase channels. The results showed that the proposed scheme have achieved more than 3 dB gains in SNR for AWGN channels respectively at
over the conventional one. The results also showed that the optimum number information signals can be send per reference signal is 8.
A Design and Implementation of Multi-band Monopole Antenna for GPS/WiMAX/WLAN Applications
Yoon, Joong-Han ; Lee, Deok-Hwan ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1189~1196
DOI : 10.13067/JKIECS.2015.10.10.1189
In this paper, a microstrip-fed multiband monopole antenna for GPS(Global positioning system)/WiMAX(:Worldwide interoperability for microwave access)/WLAN(Wireless Local Area Networks) for applications was designed, fabricated and measured. The proposed antenna is based on a microstrip-fed structure, and composed of two rectangular double rings and L strips pair and then designed in order to get triple band characteristics. To obtain the optimized parameters, we used the simulator, Ansoft's High Frequency Structure Simulator(HFSS). The proposed antenna is made of
and is fabricated on the permittivity 4.4 FR-4 substrate. The experiment results shown that the proposed antenna obtained the -10 dB impedance bandwidth 300 MHz (1.325~1.625 GHz), 400 MHz (2.275~2.675 GHz), and 600 MHz (3.15~3.75 GHz) covering the GPS/WiMAX/WLAN bands. Also, the proposed antenna measured gain and radiation patterns characteristics for required operating bands.
Effects of Elderly problem drinking DB Information on suicidal thoughts. Focusing on the mediating effect of depression and self-esteem
Lee, Sun-Hwa ;
The Journal of the Korea institute of electronic communication sciences, volume 10, issue 10, 2015, Pages 1197~1204
DOI : 10.13067/JKIECS.2015.10.10.1197
In this study, 8th Korea Welfare Panel data surveys utilizing 65 years age or older, problem drinking analyzed the impact on suicidal thoughts as a medium for depression and self-esteem. In the main analysis, First, Problem drinking appears to influence the level of statistically significant positive (+) of suicidal thoughts. Second, Depression was found to mediate the relationship between the full level of problem drinking and suicidal thoughts. Third, Problem drinking was found not appear to be significant influence on self-esteem is not the mediating effect of self-esteem. However, the higher level of problem drinking, the lower level of self-esteem, through the sign of regression coefficient is negative (-) potential of the relationship was confirmed. These results suggest that more systematic research is necessary for the elderly suicide with preparing for the elderly of problem drinking.