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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Industrial Information Systems Research
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Journal DOI :
The Korea Society for Industrial Systems
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Volume & Issues
Volume 11, Issue 5 - Dec 2006
Volume 11, Issue 4 - Dec 2006
Volume 11, Issue 3 - Sep 2006
Volume 11, Issue 2 - Jun 2006
Volume 11, Issue 1 - Mar 2006
Selecting the target year
Handoff Scheme for Real Time Service in Home Network based on Wireless LAN
Kwon Soo-Kun ; Jeong Yeon-Joon ; Oho Yeon-Joon ; Paik Eei-Hyun ; Park Kang-Roh ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 1~9
The handoff in IEEE 802.11 WLAN is a hard handoff. In hard handoff, a station has to stop the communication. As a result, the station is likely to miss some packets that arrival during the handoff process. To recover these lost packets, buffer-and-forward scheme is used. But, buffer-and-forward scheme is not efficient for real time service. In this paper, we propose new handoff scheme for real time service in home network based WLAN. The scheme uses priority queue which is recommended in IEEE 802.lie, and priority of priority queue is given to real time handoff calls. The simulation results show that the proposed scheme reduces traffic loss and transmission sequence error.
Content-based Music Retrieval by TIP-indexing Techniques and Features of Audio files
Kim Young-In ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 10~14
To effectively manage a very large amount of music data, we need an indexing technique based on audio features. But the indexing techniques for audiofeatures have not been studied completely. In this paper, we describe a content-based music information retrieval technique for audio features using the TIP-indexing file. In addition, we develop and experiment the TIP-indexing files using various blocking factors to present performance comparisons for effective indexing. Experimental results show the effectiveness of the proposed techniques.
Whitening Method for Performance Improvement of the Matched Filter in the Non-white Noise Environment
Kim Jeong-Goo ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 15~19
In shallow water active sonar environment, reverberation which is a non-white noise is one of the main source of performance degradation of target detection. In this case, the received signal is whitened before applying matched filter known as an optimum filter in the presence of white noise. However implementation of this method is very difficult because of the non-stationary characteristic of reverberation. Traditionally reverberation is assumed local stationary. In this paper, we estimate a range of stationary of reverberation signal, and then propose a pre-whitening method which improve the performance of pre-whitening block normalized matched filter in presence of non-white reverberation noise. Proposed whitener shows better whitening performance than traditional whitener because it use later as well as before reverberation of target signal. To evaluate performance of the proposed whitener, an actual measurement data sampled at the East-Sea is used for computer simulation. The target detector with new whitener is shown better performance than detector with traditional whitener.
An Optimal Intermodal-Transport Algorithm using Dynamic Programming
Cho Jae-Hyung ; Kim Hyun-Soo ; Choi Hyung-Rim ; Park Nam-Kyu ; Kang Moo-Hong ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 20~33
Because of rapid expansion of third party logistics, fierce competition in the transportation industry, and the diversification and globalization of transportation channels, an effective transportation planning by means of multimodal transport is badly needed. Accordingly, this study aims to suggest an optimal transport algorithm for the multimodal transport in the international logistics. As a solution for this problem, first of all, we have applied a pruning algorithm to simplify it, suggesting a heuristic algorithm for constrained shortest path problem to find out a feasible area with an effective time range, which has been applied to the Label Setting Algorithm, consequently leading to multiple Pareto optimal solutions. Also, in order to test the efficiency of the algorithm for constrained shortest path problem, this paper has applied it to the actual transportation path from Busan port of Korea to Rotterdam port of Netherlands.
Network Security Situational Awareness using Traffic Pattern-Map
Chang Beom-Hwan ; Na Jung-Chan ; Jang Jong-Su ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 34~39
This paper introduces a network security situation awareness tool using a traffic pattern map which facilitates recognizing a current network status by extracting and analyzing predetermined traffic features and displaying an abnormal or harmful traffic which deteriorates network performance. The traffic pattern-map consists of
intersections, on which the occupancy rate of the port having maximum occupancy is displayed as a bar graph. In general, in case of the Internet worm, the source address section on the traffic pattern map is activated. In case of DDoS the destination address section is activated.
Recognition of Container Identifier using Color Information and Contour Following
Kim Pyeoung-Kee ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 40~46
Automatic recognition of container identifier is one of key factor to implement port automation and increase distribution throughput. In this paper, I propose a method of container identifier recognition on various input images using color based edge detection and character verification algorithm, I tested the proposed method on 350 container images and it showed good results.
A Router Auto-Configuration Protocol(RACP) for IPv6 Networks
Lee Wan-Jik ; Heo Seok-Yeol ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 47~58
Address Auto-configuration capability is one of important advantages of IPv6 protocol This function enables the IPv6 hosts to configure IPv6 networks automatically, while IPv6 routers still have to be configured manually. To solve this problem, we propose RACP(Router Auto-Configuration Protocol), a new address auto-configuration protocol which configures all routers of a small network consisting of several routers and sub-networks automatically. The RACP protocol can automatically create and deliver IPv6 prefixes and routing informations of all routers on the network by using the network's prefix assigned by ISP. The proposed RACP can be used to set up network automatically for a small IPv6 site such as a small office network, a home network without the assistance of network administrator.
Performance Verification Process for Introduction of Open Source Software -centered on introduction of Linux into the NEIS-
Kim Doo-Yeon ; Kim Jong-Bae ; Rhew Sung-Yul ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 59~68
Recently, introduction of Open Source Software into informatization of the government and public sector has been actively examined, however, Open Source Software is being rarely adopted due to the lack of verified and reliable data with regard to the criteria, process, performance and stability for introduction of Open Source Software. In this paper, the process, method and plan for performance verification for introduction of Open Source Software into mission critical systems of the government and public sector are suggested in order to solve the aforesaid problem Specially, a test system to judge whether or not to adopt Open Source Software in school affairs system of the NEIS(National Education Information System) of the Korean government was set up, and the method and process of performance verification by stage in addition to feasibility study were applied to the test system for verification. Based on the result of performance evaluation in the test system, the application of Linux to school affairs system of the NEIS is being successfully practiced. It is expected that this study will be a guideline to technical review process and performance verification method as necessary to introduce Open Source Software into the mission critical systems of government and public agencies.
Adaptation for Object-based MPEG-4 Content with Multiple Streams
Cha Kyung-Ae ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 69~81
In this paper, an adaptive algorithm is proposed in streaming MPEG-4 contents with fluctuating resource amount such as throughput of network conditions. In the area of adaptive streaming issue, a lot of researches have been made on how to represent encoded media(such as video) bitstream in scalable way. By contrast, MPEG-4 supports object-based multimedia content which is composed of various types of media streams such as audio, video, image and other graphical elements. Thus, it can be more effective to provide individual media streams in scalable way for streaming object-based content to heterogeneous environment. The proposed method provides the multiple media streams corresponding to an object with different qualities and bit rate in order to support object based scalability to the MPEG-4 content. In addition, an optimal selection of the multiple streams for each object to meet a given constraint is proposed. The selection process is adopted a multiple choice knapsack problem with multi-step selection for the MPEG-4 objects with different scalability levels. The proposed algorithm enforces the optimal selection process to maintain the perceptual qualities of more important objects at the best effort. The experimental results show that the set of selected media stream for presenting objects meets a current transmission condition with more high perceptual quality.
Development of 1Gbps SNMP Optical Transmitter/Receiver System based on 1 Core Ring-type WDM PON
Park Young-Ho ; Lee So-Young ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 82~89
Optical transmission system related to network infra of ubiquitous is a essential bridge technique between metro network and access point. So, it is need to develop this technique. In this paper, we develop 1Gbps SNMP optical transmitter/receiver system based on 1 core ring-type WDM PON. The developed system can reduce number of optic fiber and doesn't need extra transmitter/receiver. Also, this system can extend nodes owing to many node per wavelength, acts rapidly against security cutting, and acts independent of protocols.
Detection of Sleep Apnea Using ZigBee
Kim Hong-Yoon ; Lee Jae-Yong ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 90~95
Polysomonography, a way of diagnosing patients for Sleep Apnea, measures several kinds of bio-signal simultaneously. So it makes patients' behavior restricted and the examination more expensive. In this paper, presents another way of examining patients' ECGs, which are transferred to a computer system through a new wireless communication, Zigbee. This way of using Zigbee has solved restrictions of places and time for Polysomonography; and thus it is possible to reduce the cost, as well as improving patients' liberty.
A Framework for Success of Industrial Clusters: The Fusion of Online and Offline Businesses
Yi Jung-Sub ; Jang Hyeong-Wook ;
Journal of the Korea Industrial Information Systems Research, volume 11, issue 3, 2006, Pages 96~107
This paper explores the benefits provided by the adoption and implementation of electronic commerce in a particular SME-intensive productive environment: the geographical cluster. This study develops a conceptual framework that highlights the six types of benefits obtained by integrating online business with offline business. Using data from 73 traditional companies in Korean port clusters, factor analysis was used to figure out six benefits including sharing information, cost savings, value-added service, customer relationship, enhanced trust, and marketing efficiency. The six empirically derived critical benefit factors were then used to examine how they improve management performance of the traditional offline companies in the cluster measured by Balanced Scorecard(BSC). According to the results, we concluded that the offline firms in the cluster can take advantages of extending to online business.