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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
KIISE Transactions on Computing Practices
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Journal DOI :
Korean Institute of Information Scientists and Engineers
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Volume & Issues
Volume 20, Issue 12 - Dec 2014
Volume 20, Issue 11 - Nov 2014
Volume 20, Issue 10 - Oct 2014
Volume 20, Issue 9 - Sep 2014
Selecting the target year
All Flash Array Storage Virtualisation using SCST
Heo, Huiseong ; Pirahandeh, Mehdi ; Lee, Kwangsoo ; Kim, Deokhwan ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 525~533
DOI : 10.5626/KTCP.2014.20.10.525
SCST(The generic SCSI target subsystem for Linux) enables developers to make SCSI target storage and supports various SCSI network protocol such as iSCSI, FC, SRP. In this paper, we propose storage virtualization method using SCST and virtualize all flash array as high performance storage through 4Gb Fiber Channel, 10Gb Ethernet and 40Gb Infiniband and evaluate their performance, respectively. Experimental result shows that 40Gb infiniband network appliance have better performance than others. In case of sequential/random read, 40Gb infiniband network appliance shows 78% and 79% of local all flash array performance attached to SCSI target system. In case of sequential/random write, it shows 83% and 88% of local flash array performance attached to SCSI target system.
Development of Multiscale Modeling Methods Coupling Molecular Dynamics and Stochastic Rotation Dynamics
Cha, Kwangho ; Jung, Youngkyun ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 534~542
DOI : 10.5626/KTCP.2014.20.10.534
Multiscale modeling is a new simulation approach which can manage different spatial and temporal scales of system. In this study, as part of multiscale modeling research, we propose the way of combining two different simulation methods, molecular dynamics(MD) and stochastic rotation dynamics(SRD). Our conceptual implementations are based on LAMMPS, one of the well-known molecular dynamics programs. Our prototype of multiscale modeling follows the form of the third party implementation of LAMMPS. It added MD to SRD in order to simulate the boundary area of the simulation box. Because it is important to guarantee the seamless simulation, we also designed the overlap zones and communication zones. The preliminary experimental results showed that our proposed scheme is properly worked out and the execution time is also reduced.
Algorithm and Data Structure for Improving of Operation Layer Performance in NETCONF Protocol
Lee, Yang-Min ; Lee, Jae-Kee ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 543~548
DOI : 10.5626/KTCP.2014.20.10.543
Modern network has a complex structure that includes diverse and heterogeneous equipments to cope with multi-purpose functions. For proper administration of networks with complex structures, NETCONF protocol has been proposed. It still, however, has a few unresolved issues with each layer of the protocol. Tackling one of the less attended issues of NETCONF, this article suggests a technique which can efficiently update the configuration data of network equipments when multiple administrators are present. Specifically, for efficient updates of the network equipment configuration, we propose to add a pre-examination of the data dependent to
algorithm in 오퍼레이션 layer and modify the data structure for managing XML documents for changing the configurations of network equipments. We have implemented and experimented with our method and confirmed that our approach brought an significant overall performance improvement to NETCONF.
Oversampling-Based Ensemble Learning Methods for Imbalanced Data
Kim, Kyung-Min ; Jang, Ha-Young ; Zhang, Byoung-Tak ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 549~554
DOI : 10.5626/KTCP.2014.20.10.549
Handwritten character recognition data is usually imbalanced because it is collected from the natural language sentences written by different writers. The imbalanced data can cause seriously negative effect on the performance of most of machine learning algorithms. But this problem is typically ignored in handwritten character recognition, because it is considered that most of difficulties in handwritten character recognition is caused by the high variance in data set and similar shapes between characters. We propose the oversampling-based ensemble learning methods to solve imbalanced data problem in handwritten character recognition and to improve the recognition accuracy. Also we show that proposed method achieved improvements in recognition accuracy of minor classes as well as overall recognition accuracy empirically.
Data Security Technology for the Desktop Virtualization Environment using the Graphic Offloading
Chung, Moonyoung ; Choi, Won-Hyuk ; Jang, Su-Min ; Yang, Kyung-Ah ; Kim, Won-Young ; Choi, Jihoon ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 555~560
DOI : 10.5626/KTCP.2014.20.10.555
This paper proposes the data security technology for the desktop virtualization environment using the separated software execution method. In the virtual environment where allocates separate VMs to the users, there is a benefit that the programs in one guest machine are isolated from the programs running in another guest machine, whereas in the separated execution environment that supports application virtualization, the isolation is not offered and it causes the data security problem because the applications are executed by the one root privilege in the server. To solve this problem, we provides the data security method using the server storage filter, the viewer filter, and the file mapping table in this paper.
Pattern-based Design and Safety Analysis for Networked Supervisory Medical Systems
Kang, Woochul ;
KIISE Transactions on Computing Practices, volume 20, issue 10, 2014, Pages 561~566
DOI : 10.5626/KTCP.2014.20.10.561
There are growing demands for improving the patient safety and the effectiveness of medical services through device connectivity and interoperability. However, integration through networking might greatly increase the complexity of the system if it is not properly designed, jeopardizing patient safety. In this paper, we codify safe medical device interaction patterns, and exploit them for the low complexity design and safety analysis of networked supervisory medical systems. We implement the proposed approach as a plug-in of Architecture Analysis and Description Language (AADL). Our implementation enables the modeling and safety analysis of medical devices and their interactions before actual development.