As the world evolves, there is always a need for managing the different business and education problems with a well defined policy. However, the field of education is still lacking well defined models that are based on mathematical formulae. Therefore, it was the aim of this research to develop a mathematical model that can help planning and managing the education system. Statistical tools are certainly of value, yet with diversity of data and parameters, the option was to use a model based on system dynamics. The preliminary results points to the validity of that model.
{"title":"Assessment of Private Education Based on Mathematical Modeling Techniques","authors":"S. Hussein, E. O. Khidir","doi":"10.1109/UKSIM.2008.15","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.15","url":null,"abstract":"As the world evolves, there is always a need for managing the different business and education problems with a well defined policy. However, the field of education is still lacking well defined models that are based on mathematical formulae. Therefore, it was the aim of this research to develop a mathematical model that can help planning and managing the education system. Statistical tools are certainly of value, yet with diversity of data and parameters, the option was to use a model based on system dynamics. The preliminary results points to the validity of that model.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"18 1","pages":"247-252"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90417985","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}
This paper presents the designing and implementation of a novel bit serial Least Mean Square adaptive filter based on a specially designed bit stream triangular compressor multiplier. The Architecture is used for processing bit serial data in communication systems. The efficiently designed bit stream multiplier is the key performance factor in terms of area and power consumption.
{"title":"LMS Bit Stream Adaptive Filter Design","authors":"A. Perwaiz, S. Khan","doi":"10.1109/UKSIM.2008.29","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.29","url":null,"abstract":"This paper presents the designing and implementation of a novel bit serial Least Mean Square adaptive filter based on a specially designed bit stream triangular compressor multiplier. The Architecture is used for processing bit serial data in communication systems. The efficiently designed bit stream multiplier is the key performance factor in terms of area and power consumption.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"12 1","pages":"507-512"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85132309","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}
This paper describes a new modelling and simulation approach in order to observe the system behaviour and eventual faults. It is based on hardware-software co-modelling with multi-level of granularity to get multi-level of simulation speed. Our modelling approach let integrate the hardware specifications to the functional model in order to establish also hardware supervision models after HW/SW co-modelling and simulation.To reach this objective we have to have a relationship between the desired accuracy of the supervision and the level of granularity of the hardware-software model, for every ECU (Electronic Computing Units) that belongs to an automotive embedded architecture.
{"title":"Co-modelling and Simulation with Multilevel of Granularity for Real Time Electronic Systems Supervision","authors":"Manel Khlif, M. Shawky","doi":"10.1109/UKSIM.2008.76","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.76","url":null,"abstract":"This paper describes a new modelling and simulation approach in order to observe the system behaviour and eventual faults. It is based on hardware-software co-modelling with multi-level of granularity to get multi-level of simulation speed. Our modelling approach let integrate the hardware specifications to the functional model in order to establish also hardware supervision models after HW/SW co-modelling and simulation.To reach this objective we have to have a relationship between the desired accuracy of the supervision and the level of granularity of the hardware-software model, for every ECU (Electronic Computing Units) that belongs to an automotive embedded architecture.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"140 1","pages":"348-353"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86740500","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}
The reference model SimPan describes an agent-based modelling approach for human panic behaviour based upon established psychological theories and findings. The reference model perceives the human being as a psychosomatic, autonomous acting creature with cognitive capabilities that is embedded in a dynamic social environment. The occurrence of different patterns of human behaviour in panic situations is explained by a human's internal state being composed of physical, emotional, cognitive and social aspects. SimPan defines modelling solutions for common environmental, socio-psychological and behavioural phenomena in the context of panic situations, defines their interrelation and impact on an individual's internal state and integrates them into a comprehensive modelling approach. The set of considered phenomena contains physical pressure, crowding, social influence on emergence of emotion, attitude and action, but also the concept of emotional intelligence and the ability of consciously controlling emotion. The presented approach is interdisciplinary and touches on research areas in computer science and psychology.
{"title":"The Reference Model SimPan – Agent-Based Modelling of Human Behaviour in Panic Situations","authors":"B. Schneider","doi":"10.1109/UKSIM.2008.107","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.107","url":null,"abstract":"The reference model SimPan describes an agent-based modelling approach for human panic behaviour based upon established psychological theories and findings. The reference model perceives the human being as a psychosomatic, autonomous acting creature with cognitive capabilities that is embedded in a dynamic social environment. The occurrence of different patterns of human behaviour in panic situations is explained by a human's internal state being composed of physical, emotional, cognitive and social aspects. SimPan defines modelling solutions for common environmental, socio-psychological and behavioural phenomena in the context of panic situations, defines their interrelation and impact on an individual's internal state and integrates them into a comprehensive modelling approach. The set of considered phenomena contains physical pressure, crowding, social influence on emergence of emotion, attitude and action, but also the concept of emotional intelligence and the ability of consciously controlling emotion. The presented approach is interdisciplinary and touches on research areas in computer science and psychology.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"45 1","pages":"599-604"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78299828","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}
Simulation technology offers within the digital factory concept an important approach to enhance the product and production engineering processes. Simulation models on different levels of detail can be applied in virtual models on various planning levels and stages in order to improve the planning process. However today’s simulation methodology and practice suffers some problems which lead in many industrial projects to a dead end. Therefore a paradigm shift in simulation methodology and practice is proposed. The clear separation of modelling the physical system behaviour and modelling controls will lead to a better integrated of simulation into the planning and implementation processes. Compatible interfaces between simulation modules and the control systems shall enable to switch between simulation modules and real system components. This concept can be applied in the digital factory environment even to enhance the operative production process.
{"title":"Paradigm Shift in Simulation Methodology and Practice - Separation of Modelling the Physical System Behaviour and Control Modelling","authors":"W. Kuehn","doi":"10.1109/UKSIM.2008.71","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.71","url":null,"abstract":"Simulation technology offers within the digital factory concept an important approach to enhance the product and production engineering processes. Simulation models on different levels of detail can be applied in virtual models on various planning levels and stages in order to improve the planning process. However today’s simulation methodology and practice suffers some problems which lead in many industrial projects to a dead end. Therefore a paradigm shift in simulation methodology and practice is proposed. The clear separation of modelling the physical system behaviour and modelling controls will lead to a better integrated of simulation into the planning and implementation processes. Compatible interfaces between simulation modules and the control systems shall enable to switch between simulation modules and real system components. This concept can be applied in the digital factory environment even to enhance the operative production process.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"20 1","pages":"380-385"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81762406","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}
The virtual model of the humanoid running robot is built by using the software ADAMS. With this model, one can research the problem how to realize the running of a humanoid robot without the physical model of the robot. In addition, a method of realizing running for the robot based on virtual leg is proposed. The robot can run stably by planning the trajectory of the center of mass (COM) and the trajectory of two feet of the robot. The trajectory of the COM of the robot is mainly planned by the dynamic equation of the virtual leg of the robot. After this method is used in the virtual model of the robot, the robot can run at a speed of 2.9m/s. The simulation results show the validity of this method.
{"title":"Simulation of the Humanoid Running Robot Based on ADAMS","authors":"H. Wei, Wei Wu, Mingzhi Liu","doi":"10.1109/UKSIM.2008.24","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.24","url":null,"abstract":"The virtual model of the humanoid running robot is built by using the software ADAMS. With this model, one can research the problem how to realize the running of a humanoid robot without the physical model of the robot. In addition, a method of realizing running for the robot based on virtual leg is proposed. The robot can run stably by planning the trajectory of the center of mass (COM) and the trajectory of two feet of the robot. The trajectory of the COM of the robot is mainly planned by the dynamic equation of the virtual leg of the robot. After this method is used in the virtual model of the robot, the robot can run at a speed of 2.9m/s. The simulation results show the validity of this method.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"21 1","pages":"726-731"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80813107","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}
This paper proposes a basic ARM full system simulation framework, a novel approach to understanding the behavior of modern embedded systems. Our simulation framework implements the kernel architecture of the ARM ISA, on which one can run and debug system or user-level programs. It has flexible software architecture, and good encapsulation of the communication between virtual peripherals and host peripherals. On the other hand, we implement a remote debugging system based on our simulation kernel, which extends remote serial protocol (RSP) of GDB and using Eclipse as the front-UI to build a platform-independent system. Since the simulation kernel has the full control of the target programs, the debugging system provides a flexible mechanism to collect the simulation information. These allowed people use or extend it to build a new ARM development environment, in order to study the embedded systems or help investigating the embedded operating system and low-level software.
{"title":"Design and Implementation of a Simulation Framework for the ARM Embedded System","authors":"Han Wan, Xiaopeng Gao, Libo Deng, Ting Yu","doi":"10.1109/UKSIM.2008.41","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.41","url":null,"abstract":"This paper proposes a basic ARM full system simulation framework, a novel approach to understanding the behavior of modern embedded systems. Our simulation framework implements the kernel architecture of the ARM ISA, on which one can run and debug system or user-level programs. It has flexible software architecture, and good encapsulation of the communication between virtual peripherals and host peripherals. On the other hand, we implement a remote debugging system based on our simulation kernel, which extends remote serial protocol (RSP) of GDB and using Eclipse as the front-UI to build a platform-independent system. Since the simulation kernel has the full control of the target programs, the debugging system provides a flexible mechanism to collect the simulation information. These allowed people use or extend it to build a new ARM development environment, in order to study the embedded systems or help investigating the embedded operating system and low-level software.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"1 1","pages":"714-719"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85586587","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}
In this study, silicon microchannel heat sink (MCHS) performance using nanofluids as coolants was analyzed. The nanofluid was a mixture of nanoscale Cu particles and pure water with various volume fractions. Based on theoretical models and experimental correlations, the heat transfer and friction coefficients required in the analysis were used. In the theoretical model, nanofluid was treated as a single-phase fluid. In the experimental correlation, thermal dispersion due to particle random motion was included. The microchannel heat sink performances for a specific geometries with Wch = Wfin = 100 µm and Lch =300 µm is examined. In this study, flow in laminar and turbulent regimes using the theoretic and experimental relations was investigated; moreover an artificial neural network (ANN) was used to simulate the MCHS having laminar flow with different circumstances and after that, the best geometry and volume fraction of nanofluid could be found based on minimum thermal resistance.
{"title":"Analysis of Microchannel Heat Sink Performance Using Nanofluids in Turbulent and Laminar Flow Regimes and Its Simulation Using Artificial Neural Network","authors":"H. Shokouhmand, M. Ghazvini, Jaber Shabanian","doi":"10.1109/UKSIM.2008.128","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.128","url":null,"abstract":"In this study, silicon microchannel heat sink (MCHS) performance using nanofluids as coolants was analyzed. The nanofluid was a mixture of nanoscale Cu particles and pure water with various volume fractions. Based on theoretical models and experimental correlations, the heat transfer and friction coefficients required in the analysis were used. In the theoretical model, nanofluid was treated as a single-phase fluid. In the experimental correlation, thermal dispersion due to particle random motion was included. The microchannel heat sink performances for a specific geometries with Wch = Wfin = 100 µm and Lch =300 µm is examined. In this study, flow in laminar and turbulent regimes using the theoretic and experimental relations was investigated; moreover an artificial neural network (ANN) was used to simulate the MCHS having laminar flow with different circumstances and after that, the best geometry and volume fraction of nanofluid could be found based on minimum thermal resistance.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"66 1","pages":"623-628"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90973134","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}
F. S. Adán, E. Macías, Eugenio Martínez-Cámara, M. P. Parte
Digital terrain models constitute the base of terrain visualization applications, used to visualize in an easy and powerful way a great quantity of information obtained from the terrain, such as occurs in virtual terrain visualization systems, used to know and enjoy land, training simulations, determination of visual impacts, etc. But these models can also be used as the base for other applications that simulate events concerning the terrain, in other to estimate their effects, such us development of roads, mines, dams, and general building works, establishment of water behaviour in rivers or dams, real military strategy simulation, simulation of natural phenomena such as floods, volcanic eruptions, landslides and avalanches, etc.This work shows the steps and methodology followed to develop a virtual terrain visualization application, based on Web3D viewers and graphic engines, as well as the simulation applications developed in both cases in order to simulate effects and optimise actuations.
{"title":"Simulation Applications Based on Digital Terrain Models Integrated in Web3D Viewers and Graphic Engines","authors":"F. S. Adán, E. Macías, Eugenio Martínez-Cámara, M. P. Parte","doi":"10.1109/UKSIM.2008.87","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.87","url":null,"abstract":"Digital terrain models constitute the base of terrain visualization applications, used to visualize in an easy and powerful way a great quantity of information obtained from the terrain, such as occurs in virtual terrain visualization systems, used to know and enjoy land, training simulations, determination of visual impacts, etc. But these models can also be used as the base for other applications that simulate events concerning the terrain, in other to estimate their effects, such us development of roads, mines, dams, and general building works, establishment of water behaviour in rivers or dams, real military strategy simulation, simulation of natural phenomena such as floods, volcanic eruptions, landslides and avalanches, etc.This work shows the steps and methodology followed to develop a virtual terrain visualization application, based on Web3D viewers and graphic engines, as well as the simulation applications developed in both cases in order to simulate effects and optimise actuations.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"22 1","pages":"590-596"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72841806","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}
Demands for more storage in the industry has increased beyond that the traditional storage mechanisms can supply and thus, the concept of Storage Area Networks (SANs) has evolved. This has resulted in the design of iSCSI (Internet SCSI) protocols that have SCSI commands and allow data transfer to take place over the network. Fiber channel protocol was the first such protocol that used Gigabit per second links to carry commands over long distances. The iSCSI Protocol maps the SCSI block oriented storage data over TCP/IP and enables storage devices to be accessed over standard Ethernet based TCP/IP networks, With the development of Gigabit Ethernet and the iSCSI protocol, reduction in costs and a uniform network infrastructure can be achieved.Simulation offers a flexible way to study the iSCSI – based storage systems. We wish to study a storage area network, which uses iSCSI Protocol to exchange data between its various nodes. This study will help us in understanding how iSCSI works in a storage area network. We have used ns2 for our simulation work. We have simulated an iSCSI initiator and an iSCSI target, which communicate through iSCSI. iSCSI lies upon TCP Protocol. R/W requests are made by the iSCSI initiator and data exchange takes place depending on these requests. The throughput is calculated and graph is plotted.
{"title":"iSCSI Simulation Study of Storage System","authors":"Smita Vishwakarma, Sankalp Bagaria","doi":"10.1109/UKSIM.2008.18","DOIUrl":"https://doi.org/10.1109/UKSIM.2008.18","url":null,"abstract":"Demands for more storage in the industry has increased beyond that the traditional storage mechanisms can supply and thus, the concept of Storage Area Networks (SANs) has evolved. This has resulted in the design of iSCSI (Internet SCSI) protocols that have SCSI commands and allow data transfer to take place over the network. Fiber channel protocol was the first such protocol that used Gigabit per second links to carry commands over long distances. The iSCSI Protocol maps the SCSI block oriented storage data over TCP/IP and enables storage devices to be accessed over standard Ethernet based TCP/IP networks, With the development of Gigabit Ethernet and the iSCSI protocol, reduction in costs and a uniform network infrastructure can be achieved.Simulation offers a flexible way to study the iSCSI – based storage systems. We wish to study a storage area network, which uses iSCSI Protocol to exchange data between its various nodes. This study will help us in understanding how iSCSI works in a storage area network. We have used ns2 for our simulation work. We have simulated an iSCSI initiator and an iSCSI target, which communicate through iSCSI. iSCSI lies upon TCP Protocol. R/W requests are made by the iSCSI initiator and data exchange takes place depending on these requests. The throughput is calculated and graph is plotted.","PeriodicalId":22356,"journal":{"name":"Tenth International Conference on Computer Modeling and Simulation (uksim 2008)","volume":"1 1","pages":"703-707"},"PeriodicalIF":0.0,"publicationDate":"2008-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86874964","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}
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