A. Moinuddin, Md. Jahidul Hoque, J. C. Sarker, Akhter Zia
Through the paper, our goal is to drive a car with the help of thin film based solar cell. Mechanical and Electrical parts are assembled thereby. The main objective of this project is to collect maximum solar energy from the solar spectrum and use that solar energy to drive the car. Amorphous silicon based thin film solar panel has been used instead of crystalline silicon to convert more solar energy to usable electrical energy. This energy is used to recharge the batteries. The operation of the solar panel can be visible through a small LED (connected in the path of the panel to the batteries). The batteries then use to run the two gear motors (12V & 6V) by the remote control system. The shaft, connected with one motor by gearing mechanism, drives the car by rotating wheels. Another motor is used to change the direction. As a result the car moves in different directions and has become a real solar car.
{"title":"Amorphous Silicon(a-Si:H) Thin Film Based Omnidirectional Control Solar Powered Vehicle","authors":"A. Moinuddin, Md. Jahidul Hoque, J. C. Sarker, Akhter Zia","doi":"10.1109/UKSim.2012.49","DOIUrl":"https://doi.org/10.1109/UKSim.2012.49","url":null,"abstract":"Through the paper, our goal is to drive a car with the help of thin film based solar cell. Mechanical and Electrical parts are assembled thereby. The main objective of this project is to collect maximum solar energy from the solar spectrum and use that solar energy to drive the car. Amorphous silicon based thin film solar panel has been used instead of crystalline silicon to convert more solar energy to usable electrical energy. This energy is used to recharge the batteries. The operation of the solar panel can be visible through a small LED (connected in the path of the panel to the batteries). The batteries then use to run the two gear motors (12V & 6V) by the remote control system. The shaft, connected with one motor by gearing mechanism, drives the car by rotating wheels. Another motor is used to change the direction. As a result the car moves in different directions and has become a real solar car.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125438638","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}
As the number of embedded systems increases, so do the demands placed upon them. Current algorithms are capable of creating adequate schedules under ideal conditions, but can be considered inadequate when many variables must be regarded. End users are demanding ever greater performance while minimizing failures and power consumption, meaning advanced power management must be incorporated into circuit designs, especially in multi-core environments. This paper summarizes the initial investigation into the simulation of an energy harvesting system to identify key parameters. This is done by initial multi-vary analysis to determine primary contributors, which are then refined through Design of Experiments (DoE). Finally, the reduced model is subject to control through Statistical Process Control (SPC) to confirm whether monitoring causes a statistical difference to the output reliability and if so, what parameter has the greatest effect.
随着嵌入式系统数量的增加，对它们的需求也在增加。目前的算法能够在理想条件下创建足够的调度，但当必须考虑许多变量时，可能被认为是不够的。终端用户要求更高的性能，同时最大限度地减少故障和功耗，这意味着必须将先进的电源管理集成到电路设计中，特别是在多核环境中。本文总结了能量收集系统仿真的初步研究，确定了关键参数。这是通过最初的多变量分析来确定主要贡献者，然后通过实验设计(DoE)对其进行改进。最后，通过统计过程控制(Statistical Process control, SPC)对简化后的模型进行控制，以确定监控是否会对输出可靠性产生统计差异，如果会，哪个参数的影响最大。
{"title":"Identification of Key Energy Harvesting Parameters through Monte Carlo Simulations","authors":"James Docherty, A. Bystrov, A. Yakovlev","doi":"10.1109/UKSim.2012.73","DOIUrl":"https://doi.org/10.1109/UKSim.2012.73","url":null,"abstract":"As the number of embedded systems increases, so do the demands placed upon them. Current algorithms are capable of creating adequate schedules under ideal conditions, but can be considered inadequate when many variables must be regarded. End users are demanding ever greater performance while minimizing failures and power consumption, meaning advanced power management must be incorporated into circuit designs, especially in multi-core environments. This paper summarizes the initial investigation into the simulation of an energy harvesting system to identify key parameters. This is done by initial multi-vary analysis to determine primary contributors, which are then refined through Design of Experiments (DoE). Finally, the reduced model is subject to control through Statistical Process Control (SPC) to confirm whether monitoring causes a statistical difference to the output reliability and if so, what parameter has the greatest effect.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129224880","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}
Query prioritization for index tuning leads to improvement of performance in databases. We propose an analytical model which centers around managing index objects that are aligned to the queries submitted by the users through an Online Transaction Processing (OLTP) system. We first define a strategy to prioritize queries based on certain configurable parameters and call them as short listed queries. The next step is to analyze the existing index objects that were created by the DBA during the initial database setup and to check if these index objects are aligned to the short listed queries. Eventually, the system generates a recommendation report to the DBA which lists new indexes to be created that are aligned to short listed queries and list of obsolete indexes that are potential candidates to be dropped due to low utilization rates. This approach introduces a new facet for adoption towards performance analysis and improvements in software systems. We present an experimental analysis that validates the ideas of feeding domain knowledge indirectly in to the system through configurable parameters that help in prioritizing queries for Index tuning.
{"title":"Index Tuning through Query Evaluation Mechanism Based on Indirect Domain Knowledge","authors":"Sreekumar Vobugari, D. Somayajulu, B. M. Subraya","doi":"10.1109/UKSim.2012.97","DOIUrl":"https://doi.org/10.1109/UKSim.2012.97","url":null,"abstract":"Query prioritization for index tuning leads to improvement of performance in databases. We propose an analytical model which centers around managing index objects that are aligned to the queries submitted by the users through an Online Transaction Processing (OLTP) system. We first define a strategy to prioritize queries based on certain configurable parameters and call them as short listed queries. The next step is to analyze the existing index objects that were created by the DBA during the initial database setup and to check if these index objects are aligned to the short listed queries. Eventually, the system generates a recommendation report to the DBA which lists new indexes to be created that are aligned to short listed queries and list of obsolete indexes that are potential candidates to be dropped due to low utilization rates. This approach introduces a new facet for adoption towards performance analysis and improvements in software systems. We present an experimental analysis that validates the ideas of feeding domain knowledge indirectly in to the system through configurable parameters that help in prioritizing queries for Index tuning.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127688040","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 a highly efficient AES algorithm resistant to differential power analysis (DPA). This paper conducts a simulation based correlation power analysis (CPA) attack on AES implementation with different structures. The proposed idea does not affect the working frequency and does not alter the algorithm core architecture. A minimal overhead hardware is used to manage the dataflow of plaintext and noise.
{"title":"Efficient Implementation of AES Algorithm Immune to DPA Attack","authors":"A. Amaar, I. Ashour, M. Shiple","doi":"10.1109/UKSim.2012.110","DOIUrl":"https://doi.org/10.1109/UKSim.2012.110","url":null,"abstract":"This paper presents a highly efficient AES algorithm resistant to differential power analysis (DPA). This paper conducts a simulation based correlation power analysis (CPA) attack on AES implementation with different structures. The proposed idea does not affect the working frequency and does not alter the algorithm core architecture. A minimal overhead hardware is used to manage the dataflow of plaintext and noise.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121932350","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. Verdiere, A. Rezgui, S. Gaaloul, B. Delinchant, L. Gerbaud, F. Wurtz, X. Brunotte
Modelica modelling language is increasingly used in engineering. It defines differential algebraic equations (DAE) which can be solved using numerical algorithms. In order to solve a DAE, Jacobian of the model is required. In this paper, a full Java implementation of Modelica model generator is made using Automatic Differentiation (AD). The generated model is packaged in a software component standard in order to be plugged in different solvers (DAE, ODE, and Optimization). Depending on the static or dynamic nature of Modelica models, the treatment is adapted in order to take advantage of automatic differentiation. Especially, in the case of static model, a Jacobian is given as sensitivity information to the optimization algorithm.
{"title":"Modelica Models Translation into Java Components for Optimization and DAE Solving Using Automatic Differentiation","authors":"F. Verdiere, A. Rezgui, S. Gaaloul, B. Delinchant, L. Gerbaud, F. Wurtz, X. Brunotte","doi":"10.1109/UKSim.2012.56","DOIUrl":"https://doi.org/10.1109/UKSim.2012.56","url":null,"abstract":"Modelica modelling language is increasingly used in engineering. It defines differential algebraic equations (DAE) which can be solved using numerical algorithms. In order to solve a DAE, Jacobian of the model is required. In this paper, a full Java implementation of Modelica model generator is made using Automatic Differentiation (AD). The generated model is packaged in a software component standard in order to be plugged in different solvers (DAE, ODE, and Optimization). Depending on the static or dynamic nature of Modelica models, the treatment is adapted in order to take advantage of automatic differentiation. Especially, in the case of static model, a Jacobian is given as sensitivity information to the optimization algorithm.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127481084","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 description of a simulation environment developed for the purposes of the evaluation of the performance of autonomic cooperative networking. The work is done in context of emergency communications and a very specific scenario of an indoor type is applied being sufficiently well tailored to the needs of showing the necessity for the incorporation of the investigated concepts. The context of emergency communications, in fact, allows for an analysis of dynamic network set-ups where the system needs to provide best possible communication capabilities in the area of incident. For this reason, issues such as energy constraints and battery drainage play secondary role, allowing for the development of way more advanced concepts as compared to commercial networked systems.
{"title":"Simulation Environment for Autonomic Cooperative Networking in Indoor Scenario","authors":"M. Wódczak","doi":"10.1109/UKSim.2012.89","DOIUrl":"https://doi.org/10.1109/UKSim.2012.89","url":null,"abstract":"This paper presents the description of a simulation environment developed for the purposes of the evaluation of the performance of autonomic cooperative networking. The work is done in context of emergency communications and a very specific scenario of an indoor type is applied being sufficiently well tailored to the needs of showing the necessity for the incorporation of the investigated concepts. The context of emergency communications, in fact, allows for an analysis of dynamic network set-ups where the system needs to provide best possible communication capabilities in the area of incident. For this reason, issues such as energy constraints and battery drainage play secondary role, allowing for the development of way more advanced concepts as compared to commercial networked systems.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126062744","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}
Hojat Dehnavi, M. Movahhedy, A. Naebi, Soleyman Pasban
In high speed machining, friction between the moving parts, generates heat. One of the major causes of thermal errors in linear axes is the heat generated in ball screw during operation at high speed. Thermal errors affect the accuracy of the linear axes and can cause a deviation from the nominal machining circular motion. The subject of this paper is to study the effects of feed velocity and ball screw Preload on the accuracy of circular motion. The temperature rise in the ball screw is measured by a laser thermometer. The errors in the linear and circular motions are measured by laser interferometer and ball bar. Training a neural network by the test results, thermal errors in all parts of a ball screw are predicted and compared with other test results.
{"title":"Prediction of the Effect of Heat Generation in Ballscrew on the Accuracy of CNC Milling Machine","authors":"Hojat Dehnavi, M. Movahhedy, A. Naebi, Soleyman Pasban","doi":"10.1109/UKSim.2012.47","DOIUrl":"https://doi.org/10.1109/UKSim.2012.47","url":null,"abstract":"In high speed machining, friction between the moving parts, generates heat. One of the major causes of thermal errors in linear axes is the heat generated in ball screw during operation at high speed. Thermal errors affect the accuracy of the linear axes and can cause a deviation from the nominal machining circular motion. The subject of this paper is to study the effects of feed velocity and ball screw Preload on the accuracy of circular motion. The temperature rise in the ball screw is measured by a laser thermometer. The errors in the linear and circular motions are measured by laser interferometer and ball bar. Training a neural network by the test results, thermal errors in all parts of a ball screw are predicted and compared with other test results.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126224103","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 new paradigm of cloud computing infrastructure can be described as an integrated approach for restructuring processes in all functions considering customer values. Now a massive restructuring process based paradigm shift is required to address excellence with respect to criteria like cost, quality, delivery and service. This paper provides a good solution for enterprises to improve the utilization benefit of information resources in Cloud computing arena using simulation and modeling approach for the private cloud provisioning, cloud business process workflow design, ticketing system, change management etc. By the application of system dynamics, this paper conducts a qualitative and quantitative research on mechanism of information resources allocation in cloud computing, managed & shared services, Infrastructure management business process modeling (BPM) and simulation. The paper aims to create a dynamic cloud business process modeling mechanisms which helps managers understand better the dynamic interrelationships in organization design and, in particular, the interrelationships between an organization's profitability (both short-term and long-term) and investment in cloud computing and overall infrastructure. The intention of this paper is to put forward a conceptual framework of simulation and modeling framework, for assisting management in handling cloud workflow design, service management and business process modeling.
{"title":"Cloud Management Simulation and Design","authors":"K. Saurabh, Rishi Ranjan","doi":"10.1109/UKSim.2012.79","DOIUrl":"https://doi.org/10.1109/UKSim.2012.79","url":null,"abstract":"The new paradigm of cloud computing infrastructure can be described as an integrated approach for restructuring processes in all functions considering customer values. Now a massive restructuring process based paradigm shift is required to address excellence with respect to criteria like cost, quality, delivery and service. This paper provides a good solution for enterprises to improve the utilization benefit of information resources in Cloud computing arena using simulation and modeling approach for the private cloud provisioning, cloud business process workflow design, ticketing system, change management etc. By the application of system dynamics, this paper conducts a qualitative and quantitative research on mechanism of information resources allocation in cloud computing, managed & shared services, Infrastructure management business process modeling (BPM) and simulation. The paper aims to create a dynamic cloud business process modeling mechanisms which helps managers understand better the dynamic interrelationships in organization design and, in particular, the interrelationships between an organization's profitability (both short-term and long-term) and investment in cloud computing and overall infrastructure. The intention of this paper is to put forward a conceptual framework of simulation and modeling framework, for assisting management in handling cloud workflow design, service management and business process modeling.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126241148","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}
We present a new method for constructing and decomposing square matrices. This method, based on the computed parameterisation of their implied determinants and minors, operates on the product of factors of a new form of matrix decomposition. This method may be employed to build new matrices with fixed determinant(s). We demonstrate that this new approach is fundamentally well-connected to the Cholesky decomposition if applied on symmetric matrices. We also demonstrate that it is related to the LU decomposition method via a diagonal matrix multiplier. Also through this new method a direct relation between Cholesky decomposition and LU factorisation is shown. This method, presented for the first time, is useful for (re)constructing matrices with a predefined determinant and simulating inverse problems. The inference method introduced here also is based on new matrix manipulation techniques that we have developed for the identification of systems from reproducible time series data.
{"title":"Matrix Operations for the Simulation and Immediate Reverse-Engineering of Time Series Data","authors":"M. Idowu, J. Bown","doi":"10.1109/UKSim.2012.24","DOIUrl":"https://doi.org/10.1109/UKSim.2012.24","url":null,"abstract":"We present a new method for constructing and decomposing square matrices. This method, based on the computed parameterisation of their implied determinants and minors, operates on the product of factors of a new form of matrix decomposition. This method may be employed to build new matrices with fixed determinant(s). We demonstrate that this new approach is fundamentally well-connected to the Cholesky decomposition if applied on symmetric matrices. We also demonstrate that it is related to the LU decomposition method via a diagonal matrix multiplier. Also through this new method a direct relation between Cholesky decomposition and LU factorisation is shown. This method, presented for the first time, is useful for (re)constructing matrices with a predefined determinant and simulating inverse problems. The inference method introduced here also is based on new matrix manipulation techniques that we have developed for the identification of systems from reproducible time series data.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128646040","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}
Marwa Hassan, M. Hossny, S. Nahavandi, D. Creighton
Time series forecasting attempts to predict future values of time series. Its work is based on studying previously observed values. A heteroskedastic time series features variable and unpredictable measures of dispersion. This uncertainty in statistical distribution parameters imposes a serious challenge to the forecasting models. There have been many attempts to identify the heteroskedasticity in time series. However, all these attempts rely on hypothesis testing and do not quantify the amount of heteroskedasticity in the examined time series. On the other hand, quantifying heteroskedasticity does provide extra information about the behavior of the time series. Studying this behavior will improve forecasting of behavioral dependent time series such as stock market data. This paper introduces a novel heteroskedasticity index based on variance of localized variances.
{"title":"Heteroskedasticity Variance Index","authors":"Marwa Hassan, M. Hossny, S. Nahavandi, D. Creighton","doi":"10.1109/UKSim.2012.28","DOIUrl":"https://doi.org/10.1109/UKSim.2012.28","url":null,"abstract":"Time series forecasting attempts to predict future values of time series. Its work is based on studying previously observed values. A heteroskedastic time series features variable and unpredictable measures of dispersion. This uncertainty in statistical distribution parameters imposes a serious challenge to the forecasting models. There have been many attempts to identify the heteroskedasticity in time series. However, all these attempts rely on hypothesis testing and do not quantify the amount of heteroskedasticity in the examined time series. On the other hand, quantifying heteroskedasticity does provide extra information about the behavior of the time series. Studying this behavior will improve forecasting of behavioral dependent time series such as stock market data. This paper introduces a novel heteroskedasticity index based on variance of localized variances.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129774099","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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