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2009 11th International Conference on Computer Modelling and Simulation最新文献

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Parametric Modelling of a TRMS Using Dynamic Spread Factor Particle Swarm Optimisation 基于动态扩散因子粒子群优化的TRMS参数化建模
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.109
S. Toha, I. A. Latiff, M. Mohamad, M. Tokhi
{"title":"Parametric Modelling of a TRMS Using Dynamic Spread Factor Particle Swarm Optimisation","authors":"S. Toha, I. A. Latiff, M. Mohamad, M. Tokhi","doi":"10.1109/UKSIM.2009.109","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.109","url":null,"abstract":"System identification in vibrating environments has been a matter of concern for researchers in many disciplines of science and engineering. In this paper, a sound approach for a Twin Rotor Multi-input Multi-Output System (TRMS) parametric modeling is proposed based on dynamic spread factor particle swarm optimization. Particle swarm optimization (PSO) is demonstrated as an efficient global search method for nonlinear complex systems without any a priory knowledge of the system structure. The proposed method formulates a modified inertia weight algorithm by using a dynamic spread factor (SF). The inertia weight plays an important role in terms of balancing both the global and local search. Thus, the usage of dynamic SF is proved experimentally to satisfy main issues of using basic PSO that are trapped in local optima and preservation of diversity. Results in both time and frequency domains portray a very good parametric model that mimic well the behavior of a TRMS. Validation tests clearly show the effectiveness of the algorithm considered in this work.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"411 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124395045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Out of Core Simplification with Appearance Preservation for Computer Game Applications 非核心简化与外观保护的电脑游戏应用
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.120
Nor Anita Fairos bt. Ismail, M. Rahim, D. Daman, S. N. Kamarudin
{"title":"Out of Core Simplification with Appearance Preservation for Computer Game Applications","authors":"Nor Anita Fairos bt. Ismail, M. Rahim, D. Daman, S. N. Kamarudin","doi":"10.1109/UKSIM.2009.120","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.120","url":null,"abstract":"A 3D interactive graphics application is an extremely computational demanding paradigm, requiring the simulation and display of a virtual environment at interactive frame rates. It is significant in real time game environment. Even with the use of powerful graphics workstations, a moderately complex virtual environment can involve a vast amount of computation, inducing a noticeable lag into the system. This lag can detrimentally affect the visual effect and may therefore severely compromise the diffusion of the quality of graphics application. This paper introduced to overcome the limitation of conventional technique. Surface attributes such as normal, colors and textures, which are essentials to bring out the beauty of 3D object are preserved and discussed.  The first process is to convert the input data into a memory efficient format. Next, the datasets are organized in an octree structure and later the partitioned meshes are kept in secondary memory (hard disk). Subsequently, sub-meshes are simplified using a new variation of vertex clustering technique. In order to maintain the surface attributes, a vertex clustering technique that collapses all triangles in every leaf node using the generalized quadric error metrics is introduced. Unlike any other vertex clustering methods, the knowledge of neighbourhood between nodes is unnecessary and the node simplification is performed independently. Overall, the proposed algorithm is capable in simplifying large datasets with pleasant quality and relatively fast. The system can run efficiently on low cost personal computer with small memory footprint.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116915982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Direct Torque Controlled Induction Motor with Variable Hysteresis Band 可变磁滞带直接转矩控制异步电动机
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.24
K. Mohanty
{"title":"A Direct Torque Controlled Induction Motor with Variable Hysteresis Band","authors":"K. Mohanty","doi":"10.1109/UKSIM.2009.24","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.24","url":null,"abstract":"An improved direct torque controlled induction motor drive is reported in this paper. It is established that the conventional direct torque controlled drive has more torque and flux ripples in steady state, which result in poor torque response, acoustic noise and incorrect speed estimations. Hysteresis controllers also make the switching frequency of voltage source inverter a variable quantity. A strategy of variable duty ratio control scheme is proposed to increase switching frequency, and adjust the width of hysteresis bands according to the switching frequency. This technique minimizes torque and current ripples, improves torque response, and reduces switching losses in spite of its simplicity. Simulation results establish the improved performance of the proposed direct torque control method compared to conventional methods.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125128790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Novel Framework of Integrated Security and Safety System Using Hybrid Network Technology 基于混合网络技术的集成安防系统新框架
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.100
Edi Saputra, K. A. Bakar, H. Herman, S. Hassan
{"title":"Novel Framework of Integrated Security and Safety System Using Hybrid Network Technology","authors":"Edi Saputra, K. A. Bakar, H. Herman, S. Hassan","doi":"10.1109/UKSIM.2009.100","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.100","url":null,"abstract":"Advancement in Micro-Electro Mechanical System (MEMS) that integrate mechanical system, sensor, actuator, and electronics has contributed to significant improvement of automation system including security and safety system. This paper will propose a framework of integrated security and safety system that combines Micro Embedded System and Computer Based System. The framework is designed and developed based on conceptual model of security and safety system for enclosed area such as campus, industrial complex, airport, and oil/gas platform. As infrastructure for connecting the security and safety devices, control panels, and Network Operating Center (NOC), the framework will use Hybrid Networking Technology. Such technology interconnects IP-based and non IP network in form of wired and wireless data communication.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"29 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123245730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of Different Approaches in Separation of Elastic and Inelastic Traffic 弹性与非弹性交通分离的不同方法分析
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.78
A. Krempa
{"title":"Analysis of Different Approaches in Separation of Elastic and Inelastic Traffic","authors":"A. Krempa","doi":"10.1109/UKSIM.2009.78","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.78","url":null,"abstract":"Article shows, that separation of traffic and use of appropriate queue management method can be a solution to problem of coexistence of elastic and inelastic traffic. The paper familiarizes with problem of coexistence of different types of traffic, presents two queue management methods and shows simulation results of protocols performance when elastic and inelastic traffic is enqueued into separate queues. Three cases were considered. In first both queues have the same size and both use Tail Drop. In second, both use Tail Drop but have different sizes. In third, queues have the same size but use different queue management methods – Tail Drop for \"inelastic\" queue and RED for \"elastic\" queue. Simulations results shows that separation of traffic ensures that in time of congestion elastic flows won’t be throttled down by inelastic traffic. Use of RED gives better access to resources to inelastic traffic ensuring smaller number of lost packets.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114479738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Innovative Braille System Keyboard for the Visually Impaired 专为视障人士设计的创新盲文系统键盘
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.66
P. Manohar, A. Parthasarathy
{"title":"An Innovative Braille System Keyboard for the Visually Impaired","authors":"P. Manohar, A. Parthasarathy","doi":"10.1109/UKSIM.2009.66","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.66","url":null,"abstract":"A keyboard is specially designed and constructed to provide easy typing technology for the visually impaired. There are totally 6 logical sensing switches that are used for acquiring the characters. The whole keyboard works based on Braille system. There are also five other specially used switches like SHIFT (Number Alphabet toggle button), SPACE, BACK SENSE, CAPS LOCK and SPEAK. This keyboard is a device made of logical switches and uses Braille system technique for sensing the characters. In this system, the sensors are aligned according to the Braille language i.e. alphabets or numeric/special characters. The main advantage of this project is that the visually impaired do not need any training since most of them are already specialized in Braille language. This keyboard is interfaced with a computer in a similar way to that of the primary keyboards that are available.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129763818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Mean and Standard Deviation Profiles for a Single-Server FIFO Queuing Node Carrying Heterogeneous Poisson and Pareto Traffic during a Bandwidth Probing Event: Analysis vs. Computer Simulation 在带宽探测事件中携带异构泊松和帕累托流量的单服务器FIFO排队节点的均值和标准差概况:分析与计算机模拟
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.73
M. Tunnicliffe, M. Hosseinpour
{"title":"Mean and Standard Deviation Profiles for a Single-Server FIFO Queuing Node Carrying Heterogeneous Poisson and Pareto Traffic during a Bandwidth Probing Event: Analysis vs. Computer Simulation","authors":"M. Tunnicliffe, M. Hosseinpour","doi":"10.1109/UKSIM.2009.73","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.73","url":null,"abstract":"Analytical expressions were obtained for the mean and standard deviation virtual waiting time profiles of a single-server FIFO queuing buffer loaded with heterogeneous (non-uniform packet-size) Poisson traffic disturbed by the passage of a bandwidth probing packet. The predictions were compared with the results of a computer simulation, using both Poisson and batch-Pareto (ON/OFF) cross-traffic arrival mechanisms. The model accurately predicted the simulated behaviour under Poisson traffic, though it showed a slight but consistent tendency to under-predict the standard deviation. For the scenarios reported, the Pareto results also showed reasonably close agreement with the model, though without the tendency towards under-prediction.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128315261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cost Analysis of a Funicular-Type Train Service via Simulation 基于仿真的索道式列车服务成本分析
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.51
J. Otamendi
{"title":"Cost Analysis of a Funicular-Type Train Service via Simulation","authors":"J. Otamendi","doi":"10.1109/UKSIM.2009.51","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.51","url":null,"abstract":"A discrete-event simulation model has been developed as a basis for the study that has been performed to help understand the dynamic behavior of a funicular-type train transportation system of people and vehicles under a mountain. The modeling approach is followed to distinguish between design parameters and output criteria. Civil engineering costs (stations and platforms, areas for waiting vehicles and for loading and unloading of passengers, railways and locomotives) as well as waiting times of the users and occupation of the resources are analyzed and counterbalanced in terms of the length of the convoy. Flow considerations relative to time schedules are also discussed.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123534656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ECN-capable TCP-friendly Layered Multicast Multimedia Delivery 支持ecn的tcp友好的分层多播多媒体传输
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.89
R. Chodorek, A. Chodorek
{"title":"ECN-capable TCP-friendly Layered Multicast Multimedia Delivery","authors":"R. Chodorek, A. Chodorek","doi":"10.1109/UKSIM.2009.89","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.89","url":null,"abstract":"ECN-capable TCP-friendly layered multicast mul-timedia delivery combines explicit congestion notifica-tion (ECN) with the TCP-friendly layered multicast scheme. TCP-Friendliness denotes that receiver–driven architecture behaves under congestion like the TCP protocol. Unlike well-known TCP-friendly proto-cols (TFRC, TFMCC, WEBRC), which use TCP throughput the equation, our system assures TCP-friendliness by emulation. The Receiver emulates TCP congestion control mechanism working with ECN con-gestion notification. Decisions about changing group membership and, as a result, about changing effective transmission rate, are taken based on TCP emulation. In the paper, a simulation model of ECN-capable mul-ticast multimedia delivery in ns-2 environment is dis-cussed.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123666161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Cognitive Factors in Software Product Line Engineering 软件产品线工程中的认知因素
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.122
F. Ahmed, Piers R. J. Campbell, M. Laghari
{"title":"Cognitive Factors in Software Product Line Engineering","authors":"F. Ahmed, Piers R. J. Campbell, M. Laghari","doi":"10.1109/UKSIM.2009.122","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.122","url":null,"abstract":"Software development organizations are trying to incorporate the concept of software product line to reduce development time and cost. The process of software product line initiation and institutionalization within an organization requires strong relationship of both technical and organizational requirements. In this paper we have identified various cognitive factors that are involved in various activities of software product line. The cognitive factors involved are divided into three categories of software product line. The identification and analysis of the cognitive factors involved in software product line will enable an organization to understand the product line process and helps them to formulate a strategy for the successful implementation of the concept.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"13 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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