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

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Automatic Method Order Settings 自动方法顺序设置
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.16
Václav Šátek, J. Kunovsky, M. Kraus, J. Kopriva
{"title":"Automatic Method Order Settings","authors":"Václav Šátek, J. Kunovsky, M. Kraus, J. Kopriva","doi":"10.1109/UKSIM.2009.16","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.16","url":null,"abstract":"Methods of numerical solutions of differential equations have been studied since the end of the last century. A large number of integration formulas have been published especially for solving special systems of differential equations. In general, it was not possible to choose the best method but for a subclass of tasks defined by similar properties the most suitable method could always be found. The presented ``Modern Taylor Series Method'' has proved to be both very accurate and fast. It is based on a direct use of the Taylor series. The main idea behind the Modern Taylor Series Method is an automatic integration method order setting, i.e. using as many Taylor series terms for computing as needed to achieve the required accuracy.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"142 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":"132637954","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
A Computationally Lyapunov Nonlinear Gain Scheduling Control of Nonlinear Systems with Stability Guarantees 具有稳定保证的非线性系统的计算Lyapunov非线性增益调度控制
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.68
Khalil Jouili, H. Jerbi
{"title":"A Computationally Lyapunov Nonlinear Gain Scheduling Control of Nonlinear Systems with Stability Guarantees","authors":"Khalil Jouili, H. Jerbi","doi":"10.1109/UKSIM.2009.68","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.68","url":null,"abstract":"The present work proposes an advanced Gain Scheduling controller synthesis approach which is based on the methodological theory of Lyapunov design. We exploit an original procedure to enlarge the domain of attraction of a nonlinear affine system based on the Zubov Theorem. Then we construct control Lyapunov functions to various operating points of the studied process. A Lyapunov-based control synthesis algorithm is used to construct a control law that guarantees stability and high precision along the desired trajectory. We demonstrate the performances of the control design procedure on a second order nonlinear chemical reactor CSTR model characterized by multiple operating points. A simulation study is developed to show the efficiency of the proposed method.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"38 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":"130825751","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
Process-Oriented E-government Application Development 面向流程的电子政务应用开发
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.117
T. Baker, A. Taleb-Bendiab, D. Al-Jumeily
{"title":"Process-Oriented E-government Application Development","authors":"T. Baker, A. Taleb-Bendiab, D. Al-Jumeily","doi":"10.1109/UKSIM.2009.117","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.117","url":null,"abstract":"Whilst, much progress has been made towards achieving the vision of e-government, including the development of associated tools and techniques, numerous inquiries and investigations are still reporting on the general “software crisis” within e-government: E-government services are failing to deliver promised functionality and  are  being delivered late and over-budget. As usual this is exacerbated by the continuous and ever changing business processes, IT and user requirements. This paper presents the latest results from an ongoing study, into the application of separation of concerns and autonomic design principles, to ease runtime adaptation and management of e-government systems.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"24 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":"133688502","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
Parallel Computations Based on Analogue Principles 基于模拟原理的并行计算
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.15
M. Kraus, Vlastimil Kaluza, J. Kunovsky, Václav Šátek
{"title":"Parallel Computations Based on Analogue Principles","authors":"M. Kraus, Vlastimil Kaluza, J. Kunovsky, Václav Šátek","doi":"10.1109/UKSIM.2009.15","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.15","url":null,"abstract":"It is the aim of the paper to give some of the basic philosophy of analogue computation before entering into a detailed discussion of the theory of analogue principles. The analogue technique has, in general, three control states; they are the reset, operate, and hold states. The idea of analogue principles is used in our Taylor series integrators. Again, three control states are applied (reset, operate, hold) in our system. The only standard operational amplifier is replaced by digital elements. The paper provides a general description of the manner in which components are connected together in the mechanization of some relatively simple examples.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"108 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":"114227926","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: 2
Picture Archiving and Communication System Analysis and Deployment 图片存档与通信系统分析与部署
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.36
S. Hussein
{"title":"Picture Archiving and Communication System Analysis and Deployment","authors":"S. Hussein","doi":"10.1109/UKSIM.2009.36","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.36","url":null,"abstract":"The quality of electronic patient record became a critical factor in the decision making process, with a corresponding need for error management through automated data quality assurance practices. Although Picture Archiving and Communication System (PACS) has become a mature technology over the past few years and has been widely implemented in several developed countries, evaluation of PACS success is still a major problem to healthcare organizations specially in developing countries. For that reason it was the aim of this research to introduce design considerations and solutions regarding the implementation and evaluation of a modern PACS within an already operating hospital environment in Sudan. The research proposed a strategy to smoothly transform an already existing hospital to a fully digital one and to integrate all existing medical equipments to a central archiving system with the ability to upgrade and expand as well as to connect with the other hospitals and health care organizations.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"110 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":"133300596","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: 8
Hybrid Kohonen Self Organizing Map for the Uncertainty Involved in Overlapping Clusters Using Simulated Annealing 用模拟退火求解重叠簇不确定性的混合Kohonen自组织映射
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.28
E. Mohebi, M. Sap
{"title":"Hybrid Kohonen Self Organizing Map for the Uncertainty Involved in Overlapping Clusters Using Simulated Annealing","authors":"E. Mohebi, M. Sap","doi":"10.1109/UKSIM.2009.28","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.28","url":null,"abstract":"The Kohonen self organizing map is widely used as a popular tool in the exploratory phase of data mining. The SOM (Self Organizing Maps) maps high dimensional space into a 2-dimensional grid by placing similar elements close together, forming clusters. Recently research experiments presented that to capture the uncertainty involved in cluster analysis, it is not necessary to have crisp boundaries in some clustering operations. In this paper to overcome the uncertainty, an optimized clustering algorithm based on SOM which employs the rough set theory and the Simulated Annealing as a general technique for optimization problems is proposed. The optimized two-level stage SA-Rough SOM (Simulated Annealing – Rough Self Organizing Map) (first using SOM to produce the prototypes that are then clustered in the second stage based on the combination of rough set and simulated annealing) is found to perform well and more accurate compared with the crisp clustering methods (i.e. Incremental SOM) and reduces the errors.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"43 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":"133657450","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
An Investigation of Fluid Flow through a Modified Design for the 'GP' Device 改进GP装置的流体流动特性研究
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.70
G. Pearce, F. Jaegle, Luke Gwatkin, Julian Wong, N. Perkinson, Julian Spence
{"title":"An Investigation of Fluid Flow through a Modified Design for the 'GP' Device","authors":"G. Pearce, F. Jaegle, Luke Gwatkin, Julian Wong, N. Perkinson, Julian Spence","doi":"10.1109/UKSIM.2009.70","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.70","url":null,"abstract":"We present 3-D FLUENT simulation modelling of the GP’ Mechanical Thrombectomy Device (MTD) used with a modified funnel structure. Comparisons are made of the results obtained from this modelling with actual measurements made in an in-vitro model of the ‘GP’ MTD with an end mounted funnel structure used in experiments. There was good agreement between the theoretical modelling and the in-vitro measurements. Such a device (with its end mounted funnel structure) may be used to remove older blood clots in arteries. We conclude that the 3-D FLUENT modelling is useful in predicting the performance of such a funnelled device, prior to actual construction of the finalised design.","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":"133039376","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: 8
Integrated Autonomy A Modeling-Based Investigation of Agrifood Supply Chain Performance 基于集成自治模型的农产品供应链绩效研究
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.42
K. Bryceson, G. Slaughter
{"title":"Integrated Autonomy A Modeling-Based Investigation of Agrifood Supply Chain Performance","authors":"K. Bryceson, G. Slaughter","doi":"10.1109/UKSIM.2009.42","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.42","url":null,"abstract":"The success of supply chains, whether they are whole-of-industry chains or internal business chains, depends on integration, coordination, communication and cooperation. However, one of the key issues faced by enterprises within a supply chain is the tendency for each component in the supply chain to have different goals – particularly since each component is very often an autonomous business unit. This situation can, and very often does, result in a lack of integration, coordination, communication and thus cooperation.This paper describes the use of agent based modeling techniques to investigate whether the distributed computing concept of Integrated Autonomy could also be promoted as a business strategy for managing agri-food supply chains in order to increase efficiencies and coordination across the chain. The results of modeling two different supply chain scenarios in both an industry and in an enterprise environment indicate that IA as a concept can be translated into a practical management strategy with associated performance metrics aimed at increasing efficiencies, coordination and communication across supply chains.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"66 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":"133345609","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: 8
Invited Paper: A Marker-Based Viewpoint Recognition for Interaction with Virtual Objects 邀请论文:基于标记的视点识别与虚拟物体的交互
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.50
Teruaki Ito, Takashi Niwa
{"title":"Invited Paper: A Marker-Based Viewpoint Recognition for Interaction with Virtual Objects","authors":"Teruaki Ito, Takashi Niwa","doi":"10.1109/UKSIM.2009.50","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.50","url":null,"abstract":"A user can get a high immersive feeling with staying in a VR-based screen booth, changing the user’s viewpoints and controlling visualized objects. However, because of its installation environment and its cost, it is not suitable for casual applications. This paper proposes a marker-based viewpoint recognition method, which calculates the position and direction of the viewpoint of a user who is looking at virtual objects. The virtual objects can then be appropriately located so that their position and orientation could meet the user’s view. A user standing in front of the projection system of this research can interactively review the shape of the object from different angles simply by moving the head with the marker, and even can check the internal view of the object. This paper presents the method and its demonstration, and discusses the feasibility of the proposed approach for casual applications.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"19 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":"121888702","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
Modelling Mixed Access-Patterns in Network-Based Systems 基于网络系统的混合访问模式建模
2009 11th International Conference on Computer Modelling and Simulation Pub Date : 2009-03-25 DOI: 10.1109/UKSIM.2009.67
D. N. Thakker, G. Mapp, O. Gemikonakli
{"title":"Modelling Mixed Access-Patterns in Network-Based Systems","authors":"D. N. Thakker, G. Mapp, O. Gemikonakli","doi":"10.1109/UKSIM.2009.67","DOIUrl":"https://doi.org/10.1109/UKSIM.2009.67","url":null,"abstract":"The usage of network-based applications is increasing, as network speeds increase. Also, the use of streaming applications, e.g BBC I-Player, Youtube etc, over the network is becoming commonplace. These applications access data sequentially. However, as processor speed and the amount of memory available increase, the rate at which streaming applications access data is much faster than the rate at which the blocks can be fetched consecutively from the network storage. In addition to sequential access, the system also needs to satisfy demand misses. Therefore, there is a need to model these access patterns for network-based storage systems.In this paper, we attempt to develop an analytical model and an algorithm which will be used to investigate the operational boundaries under which streaming applications can run without jitter and demand misses can be satisfied in reasonable time.","PeriodicalId":327522,"journal":{"name":"2009 11th International Conference on Computer Modelling and Simulation","volume":"26 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":"121946362","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: 2
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