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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Society for Simulation
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Journal DOI :
The Korea Society for Simulation
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Volume & Issues
Volume 15, Issue 4 - Dec 2006
Volume 15, Issue 3 - Sep 2006
Volume 15, Issue 2 - Jun 2006
Volume 15, Issue 1 - Mar 2006
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Worm Virus Modeling and Simu1ation Methodology Using Artificial Life
You, Yong-Jun ; Chae, Soo-Hoan ; Chi, Sung-Do ; Oh, Ji-Yeon ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 1~10
Computer virus modeling and simulation research has conducted with focus on the network vulnerability analysis. But computer virus shows the biological virus characters such as proliferation, reproduction and evolution. Therefore it is necessary to research the computer virus modeling and simulation using the Artificial life technique. The approach of computer modeling and simulation using Artificial life provides the analysis method about the effects on the network by computer virus and the behavior mechanism of computer virus. Hence this paper proposes the methodology of computer virus modeling and simulation using Artificial life, which is effected to contribute the research on the computer virus vaccine.
A Simulation-Based Development Methodology for CAS (Context-Aware Web Services) Personalization
Chang, Hee-Jung ; Kim, Ju-Won ; Choi, Sung-Woon ; Lee, Kang-Sun ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 11~19
With the emergence of pervasive computing, personalization becomes an important issue to provide with users customized services, anywhere and anytime in their specific environment. Many researches have shown the possibilities of personalization by acquiring and processing sensor information around users. However, personalization remains still at its infancy, since most researches have failed to consider various contexts comprehensively besides sensor data, and just developed tailored services for a specific application domain. In this work, we propose a simulation-based CAS (context Aware Web Services) development methodology. Our methodology considers various contexts on users (eg. current location), web services (eg. response time), devices (eg. availability) and environment (eg. sensor data) all together by simulating them on the fly for personalized and adaptable services.
A Study on the Kernel-Based Management for Mobile Grid Application
Kim, Tae-Kyung ; Seo, Hee-Seok ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 21~28
In this paper, we introduce the mobile grid architecture using kernel-based managements. Mobile grid paradigm is used to allow mobile users to access distributed resources in a transparent, secure and effective way. Each mobile grid user requests job submission, searches for suitable resources to run Job, executes the job to the allocated system resources, and receives the results of the requested job. There are a number of challenging issues when taking mobile environment into account, such as limited performance of mobile devices and mobility of mobile device. To resolve these issues, we design and implement the kernel-based management system for mobile grid application to overcome the limited resources of mobile devices. Also, we show the efficiency of the suggested architecture using the performance evaluation.
Modeling and Simulation of Fuzzy based Propagation Limiting Method for message routing in Wireless Sensor Networks
Chi, Sang-Hoon ; Lee, Hae-Young ; Cho, Tae-Ho ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 29~39
Sensor networks consist of small nodes with sensing, computation, and wireless communications capabilities. A number of routing protocols to transmit the data between the base station and sensor nodes have been proposed. Intanagonwiwat et al. proposed the directed diffusion in which the base station sends interest messages and waits for data from the nodes in the specific regions. Since the directed diffusion propagates every interest message to whole nodes in the network, it causes energy dissipation of nodes. In this paper, we propose a novel data propagation method, which limits the data transmission area according to a threshold value for reducing the energy consumption in the network. A fuzzy logic is exploited to determine the threshold value by considering the energy and density of all the deployed nodes. The simulation models are designed and implemented based on DEVS formalism which is theoretically well grounded means of expressing discrete event simulation models.
RRSiM : Agent SiMulator(1)
Song, Byung-Kwen ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 41~50
The agent system for managing various equipments constituting communication networks is usually started to be developed after completing real resources or can be developed using network management platform independent from real resources. In this paper, we design real resource simulator which can perform in advance the function of real resources without real resources. The real resource simulator performs the role of automatically generating specific attribute value and informing it according to the specified random function. Moreover, in this paper, we design E-GDMO grammar in which the grammar for simulation is added to the existing GDMO grammar and its E-GDMO compiler to perform real resource simulator.
An Embedded Software Debugger Using an Instruction Set Simulator
Jung, Hun ; Son, Sung-Hoon ; Shin, Dong-Ha ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 51~58
Debugging embedded softwares is very different from debugging general softwares. For examples, debugging embedded software requires more information, such as information on power consumption, information on the distribution of executed instructions, information on the distribution of used registers, and information on the amount of clocks consumed during the execution of a program, that is not needed in debugging general softwares. In this paper, we propose more effective method fer debugging embedded softwares using an instruction set simulator for the microprocessor that is executing embedded softwares. In this research, we develop a debugger based on an instruction set simulator for a domestic embedded microprocessor called SE1608 and we shows an effective debugging method using a MiBench program which is widely used to benchmark embedded softwares. The debugging method proposed in this paper is relatively easy to implement and shows many advantages compared with existing debugging methods.
An Efficient PCB Assembly Method by Multiple Adsorption with Gantry Type SMD using Simulation
Moon, Gee-Ju ; Kim, Gwang-Pil ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 59~67
An efficient PCB assembly method with Gantry type machine is developed and proposed in this paper to improve system productivity. Nozzle changes at Gantry type machine is the major reason causing lower system performance instead of header and slot movements on the other type machines. The problem is attacked by maximizing multiple adsorptions to reduce the number of necessary nozzle changes with Gantry type machine. It is designed to reduce the assembly time per PCB with multiple adsorptions based upon the positions of feeders and nozzles. A simulation model is constructed to show the effectiveness of the suggested heuristic and necessarily a comparison study is followed with different methods on selection of next assembly feeder and nozzle with various cases.
Optimal Allocation Model of KDX for Missile Defense
Lee, Sang-Heon ; Jeong, In-Cheol ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 69~77
In most positioning and allocation practices, many mathematical models are proposed in various fields. The set covering (SC) problem has many practical applications of modeling not only real world problem but also in military. As our air defense weapon systems are getting older and declining the performance, new plans far acquisition of high-tech air defense weapon system are being conducted. In this paper we established simulation model for optimal allocation of KDX which carries new missile defense weapon system by using partial set covering considering both attacker and defender side. By implementating simulation model, we assess the available scenarios and show the optimal pre-positioning of KDX and interceptor's allocation. Furthermore, we provide a variety of experiments and extensive scale sized situations for Korea Indigenous Missile Defense (KIMD) and support decision-making for efficient positioning of unit.
Media Access Control Mechanism for Efficient Wireless Communication in Underwater Environments
Jeong, Yoo-Jin ; Shin, Soo-Young ; Park, Soo-Hyun ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 79~86
Data transmission in poor environment like underwater has considerably serious delay rate and ewer rate. Like this environment usually has heavy fluctuation of error rate and limited wireless communication state. Therefore, mechanism using in such environment has to be efficient and simple. This paper suggests a new block ack mechanism, called the Pervasive Block ACK (PBA), which transmits aggregated ACKs. This mechanism takes effect on reducing number of traffic, decreasing overhead and delay rate in poor environment networks like underwater. Additionally, we can expect energy consumption. We verify propriety and efficiency of PBA through describing numerical result based analytical formula in this paper.
Dual Super Cluster Head Underwater Sensor Network Routing Protocol
Chang, Young-Il ; Shin, Soo-Young ; Prak, Hyun-Mun ; Park, Soo-Huyn ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 87~96
Wireless Sensor Network (WSN) is researched in various filed. Underwater Sensor Network (UWSN) is used various purpose such as underwater environment monitoring. But, WSN is researched in the terrestrial that uses mainly radio frequency, The existing terrestrial research is incongruent to apply to underwater. Therefore, we propose UWSN architecture that considers underwater environment. In this paper, UWSN applied cluster technique and functional node constructs. Each cluster collects and sends cluster data. Dual super cluster head receives cluster data and transmits each in the base-station. We implement WSN routing algorithm, and construct test-bed and analyze cluster data receive rate.
Efficient Data Distribution Method in a Wireless P2P Network
Kang, Seung-Seok ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 97~105
Popular content stored within the Internet may be convenient to download via modern 3G connections, but costly due to a fee charged by telecommunication providers on the basis of the amount of data transferred. This paper presents a network in which several mobile devices, called the peers, cooperate to download their assigned portion of the content using a 3G connection in order to reduce the overall cost. Then, the peers exchange their assigned portion of the content with other peers via a wireless ad hoc network and the peers reconstruct the whole content using the exchanged portion. This paper focuses on the per-peer based distribution method, and presents the performance comparison with a similar method, called the per-packet distribution method. Both methods are designed to reduce packet collisions while content is exchanged. The simulation result indicates that the per-peer based method outperforms the per-packet based method, and approximately 90% of the telecommunication cost is saved with as few as 10 peers.
Mobile Sink Routing Scheme for Sensor Networks
Hwang, Mi-Young ; Park, Sang-Joon ; Khil, A-Ra ; Kim, Byung-Gi ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 107~117
Wireless Sensor Network consists of sensor nodes and sink. A sink receives and processes signals created from sensor nodes. Many studies have been performed, since sensor network allows multiple nodes to run using a limited amount of energy, Most researches have focused on using fixed sink. However, in many cases, the sink has mobility effected by man, cars, and etc. This research proposes three methods for reducing the node's energy consumption which is applied the Grid method based on mobile sink. Most routing processes handled by the mobile sink and wireless sensor area is separated and operated respectively. So, this research allows decreasing the power costs. In addition, it also proposes methods using simulation to test the quality of the performance.
Simulation of Noise and Vibration around the Improved Turnout System
Eum, Ki-Young ; Um, Ju-Hwan ; Lee, Chin-Hyung ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 119~128
A turnout system which permits trains to pass from one track to another is a combination of the switch, the crossing, lead rails which are necessary to connect the switch and the crossing, two guard rails and a switch machine for operating the switch. A turnout is the sole moving part among the railway components and has complex configuration, so the safety has always been raised an issue. In Korea, it is planned to adopt the high speed tilting train, which operates at the maximum speed of 200km/h, at conventional lines by the year of 2010. However, for the application of the tilting train to conventional lines, it is prerequisite to establish a stable turnout system allowing the tilting train to pass through it without reducing speed. Therefore, the improved turnout system for the speed-up of conventional lines has been developed and the prototype of the turnout system has been constructed. In this study, simulation of noise and vibration around the improved turnout system was performed in order to predict the generation level of noise and vibration due to passing of the tilting train through the turnout system.
Efficient Grid Resource Scheduling Model with Resource Reliability Measurement
Park, Da-Hye ; Lee, Jong-Sik ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 129~136
Grid computing has been appeared for solving large-scaled data which are not solved by a single computer. Grid computing is a new generation platform which connects geographically distributed heterogeneous resources. However, gathering heterogeneous distributed resources produces many difficult problems. Especially. to assure resource reliability is one of the most critical problems. So, we propose a grid resource scheduling model using grid resource reliability measurement. We evaluate resource reliability based on resource status data and apply it to the grid scheduling model in DEVSJAVA modeling and simulation. This paper evaluates parameters such as resource utilization, job loss and average turn-around time and estimates experiment results of our model in comparison with those of existing scheduling models such as a random scheduling model and a round-robin scheduling model. These experiment results showed that the resource reliability measurement scheduling model provides efficient resource allocation and stable Job processing in comparison with a random scheduling model and a round-robin scheduling model.
An Application of Genetic Algorithm for Efficient Grating Allocation
Lee, Jung-Gyu ; Cho, Tae-Ho ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 137~142
D/In modern production industries, computer aided systems have been improving the efficiency and convenience of the various stages of work. However. as the complexity of computerized production systems increases, various techniques are still necessary. The problem we addressed occurs in computer systems that automatically make manufacturing process plans in the metal grating manufacturing industry. In the grating layout design, the key to saving the manufacturing cost is to find a design with the minimal number of cutting operations. The proposed genetic algorithm explores the feasible alternatives within the space until an optimal solution is obtained.
A Simulation Study for Detailed Design of A-Mart Logistics Center for Low Temperature Products
Jeon, Byoung-Hack ; Jang, Seong-Young ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 143~151
This paper deals with the simulation model for design and operations of A-Mart logistic center for low temperature products. In developed simulation model, receiving docks, digital classification system (DCS), shipping docks, material handling devices and manual sorting stations are considered. Five types of cargo such as fruits, palletized fruits, delicatessen and fisheries, vegetables and refrigerated cargoes are considered. The simulation model and process animation are developed using the simulation package ARENA. Among various design and operation alternatives consisting of the number of workers of receiving dock, allocation of receiving docks by cargo types, DCS capacity, the number of folk-lift, the number of manual sorting operators and overall layout, the best alternatives of each subsystem are selected by simulation analysis. The major performance measures such as DCS throughput, utilization of operators at each station, receiving docks utilization and folk-lift utilization are considered for the alternative evaluation.
A Study on Forecasting the Demand of WCDMA Mobile Phones
Lee, Sang-Hoon ; Lee, Byoung-Chul ; Kim, Yun-Bae ; Kim, Jae-Bum ;
Journal of the Korea Society for Simulation, volume 15, issue 4, 2006, Pages 153~160
The demand of domestic mobile service has been explosively increasing. The forthcoming WCDMA, which open in 2006, is also a key technology in the mobile service market. The WCDMA service needs HSPDA phones which will be evolved to HSDPA. In the aspect of drawing up management strategy, practical researches about forecasting the demands of new mobile phones are necessary. In this paper, we provide the modified the Lotka-volterra model as a forecasting model, which is concerned with effects of phone prices and performance.