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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The KIPS Transactions:PartA
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Korea Information Processing Society
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Volume & Issues
Volume 17A, Issue 6 - Dec 2010
Volume 17A, Issue 5 - Oct 2010
Volume 17A, Issue 4 - Aug 2010
Volume 17A, Issue 3 - Jun 2010
Volume 17A, Issue 2 - Apr 2010
Volume 17A, Issue 1 - Feb 2010
Selecting the target year
Autonomous Cooperative Localization of Mobile Sensors
Song, Ha-Yoon ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 53~62
DOI : 10.3745/KIPSTA.2010.17A.2.053
Mobile Sensor Vehicles, nodes of Mobile Sensor Network, are navigating for a specific, maybe unknown, region. For the precise usage of MSN, MSV has to be able to do localization by integrating information through communication by each other. In addition, MSV should be localized with various sensors equipped. In this research, we propose a set of techniques that improve accuracy using human mimic by combining and exploiting the existing techniques such as Dead-Reckoning, Computer Vision and Received Signal Strength Identification.
Implementation of a Block Link File System Supporting Fast Editing/Writing for Large-sized Multimedia Files
Jung, Seung-Wan ; Ko, Seok-Young ; Nam, Young-Jin ; Seo, Dae-Wha ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 63~72
DOI : 10.3745/KIPSTA.2010.17A.2.063
Recently, the need for multimedia devices, such as digital TV, and camcorder has increased. These devices provide many services on multimedia files such as playing, recording, and editing. Throughout these services, in case of storing edited large-scaled multimedia files, existing file system have several capability problems that are taking too much time and requiring disk I/O. In this paper, we propose the use of Linux Ext2 file system based 'Block-Link file (BL-file) system' in order to solve these problems. For the BL-file system, when editing and storing large-scaled files, there is no data input or output but only modification of the metadata. Additionally, by sharing data blocks between multimedia files, we can save disk spaces. Moreover, because the managing of data block sharing information is more convenient than the existing FWAE technique, we can lessen system overhead. The BL-file system is based on Ext2 file system and implemented in a Linux environment, and the usefulness of the proposed technique is validated by applying the Linux multimedia file-editing tool 'Avidemux'.
A Concurrent Incremental Evaluation Technique Using Multitasking
Han, Jung-Lan ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 73~80
DOI : 10.3745/KIPSTA.2010.17A.2.073
As the power of hardware has improved, there have been numerous researches in processing concurrently using multitasking method. The incremental evaluation is the evaluation method of reevaluating only affected parts instead of reevaluating overall program when the program has been changed. It is necessary to do more studies that improve the efficiency of concurrent incremental evaluation to do multitasking using multi-threading of Java not to do in parallel using multiprocessor. In this paper, the dependency in the dependency chart is based on the attribute that describes the real value of the variable that directly affects the semantics, thereby doing efficient evaluation. So using the dependency, this paper presents the concurrent incremental evaluation algorithm for Java Languages and proves its correctness, analyzing the efficiency of concurrent incremental evaluation by the simulation.
Defect Detection and Defect Classification System for Ship Engine using Multi-Channel Vibration Sensor
Lee, Yang-Min ; Lee, Kwang-Young ; Bae, Seung-Hyun ; Jang, Hwi ; Lee, Jae-Kee ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 81~92
DOI : 10.3745/KIPSTA.2010.17A.2.081
There has been some research in the equipment defect detection based on vibration information. Most research of them is based on vibration monitoring to determine the equipment defect or not. In this paper, we introduce more accurate system for engine defect detection based on vibration information and we focus on detection of engine defect for boat and system control. First, it uses the duplicated-checking method for vibration information to determine the engine defect or not. If there is a defect happened, we use the method using error part of vibration information basis with error range to determine which kind of error is happened. On the other hand, we use the engine trend analysis and standard of safety engine to implement the vibration information database. Our simulation results show that the probability of engine defect determination is 100% and the probability of engine defect classification and detection is 96%.
A CAWL-based Context-Aware Workflow System for Composite Workflow Services
Choi, Jong-Sun ; Cho, Yong-Yun ; Choi, Jae-Young ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 93~102
DOI : 10.3745/KIPSTA.2010.17A.2.093
There are many complicated situations which could be occurred in users' surroundings, so it is required to develop automation services to provide users with appropriate services in ubiquitous computing environments. However, most of the current context-aware workflow systems express context-aware services only with a single workflow. Therefore, they have difficulties in providing users with various and composite services by combining different workflows. In this paper we propose a CAWL-based context-aware workflow system, where CAWL is a context-aware workflow language to express a composite workflow model by describing individual service workflows. The proposed system can provide users with various composite workflow services based on a service scenario, which is described with CAWL. And by reusing a number of single workflows to construct composite workflow services, it is possible to save time and effort to develop context-aware workflows.
A Design of Efficient Cluster Sensor Network Using Approximate Steiner Minimum Tree
Kim, In-Bum ;
The KIPS Transactions:PartA, volume 17A, issue 2, 2010, Pages 103~112
DOI : 10.3745/KIPSTA.2010.17A.2.103
Cluster sensor network is a sensor network where input nodes crowd densely around some nuclei. Steiner minimum tree is a tree connecting all input nodes with introducing some additional nodes called Steiner points. This paper proposes a mechanism for efficient construction of a cluster sensor network connecting all sensor nodes and base stations using connections between nodes in each belonged cluster and between every cluster, and using repetitive constructions of approximate Steiner minimum trees. In experiments, while taking 1170.5% percentages more time to build cluster sensor network than the method of Euclidian minimum spanning tree, the proposed mechanism whose time complexity is O(
) could spend only 20.3 percentages more time for building 0.1% added length network in comparison with the method of Euclidian minimum spanning tree. The mechanism could curtail the built trees' average length by maximum 3.7 percentages and by average 1.9 percentages, compared with the average length of trees built by Euclidian minimum spanning tree method.