Over the past few decades, unprecedented growth in wireless communications, networking and video-coding technologies have stimulate numerous applications such as video on demand and interactive video telephony. Ultrawideband technology (UWB) which offers high data rate with low transmit power, becomes a very promising wireless platform for video transmission. Recently, Cognitive Radio (CR) technology was introduced to fully utilized spectrum usage by sensing the spectral environment and use this information to opportunistically provide wireless links that meet the user communications requirements optimally. It is obvious that achieving more reliable and efficient multimedia communication over wireless UWB channel requires a cross design approach due to tight dependency among protocol layers. In this paper, proposed cross layer framework of video transmission over CR-UWB will be presented. Then, a simulation study is carried out to evaluate the effect of resource allocation at the MAC layer to the video quality perceived at the receiver.
{"title":"Performance Evaluation of Video Transmission Over Ultrawideband WPAN","authors":"N. Aripin, N. Fisal, R. Rashid","doi":"10.1109/AMS.2009.110","DOIUrl":"https://doi.org/10.1109/AMS.2009.110","url":null,"abstract":"Over the past few decades, unprecedented growth in wireless communications, networking and video-coding technologies have stimulate numerous applications such as video on demand and interactive video telephony. Ultrawideband technology (UWB) which offers high data rate with low transmit power, becomes a very promising wireless platform for video transmission. Recently, Cognitive Radio (CR) technology was introduced to fully utilized spectrum usage by sensing the spectral environment and use this information to opportunistically provide wireless links that meet the user communications requirements optimally. It is obvious that achieving more reliable and efficient multimedia communication over wireless UWB channel requires a cross design approach due to tight dependency among protocol layers. In this paper, proposed cross layer framework of video transmission over CR-UWB will be presented. Then, a simulation study is carried out to evaluate the effect of resource allocation at the MAC layer to the video quality perceived at the receiver.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"10 1","pages":"676-680"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78878506","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}
Automatic speech recognition (ASR) has made great strides with the development of digital signal processing hardware and software especially using English as the language of choice. In this paper, a new feature extraction method is presented to identify vowels recorded from 80 Malaysian speakers. The features are obtained from Vocal Tract Model based on Bandwidth (BW) approach. The bandwidth is determined by finding the frequency where the spectral energy is 3dB below the peak. Average gain was calculated from these bandwidths. Classification results from Bandwidth Approach were then compared with results from 14 MFCC Coefficients using BPNN (Backpropagation Neural Network), MLR (Multinomial Logistic Regression) and LDA (Linear Discriminative Analysis). Classification accuracy obtained shows Bandwidth Approach performs better than MFCC using all these classifiers.
{"title":"Malaysian Vowel Recognition Based on Spectral Envelope Using Bandwidth Approach","authors":"Fadzilah Siraj, M. Azmi, M. Paulraj, S. Yaacob","doi":"10.1109/AMS.2009.152","DOIUrl":"https://doi.org/10.1109/AMS.2009.152","url":null,"abstract":"Automatic speech recognition (ASR) has made great strides with the development of digital signal processing hardware and software especially using English as the language of choice. In this paper, a new feature extraction method is presented to identify vowels recorded from 80 Malaysian speakers. The features are obtained from Vocal Tract Model based on Bandwidth (BW) approach. The bandwidth is determined by finding the frequency where the spectral energy is 3dB below the peak. Average gain was calculated from these bandwidths. Classification results from Bandwidth Approach were then compared with results from 14 MFCC Coefficients using BPNN (Backpropagation Neural Network), MLR (Multinomial Logistic Regression) and LDA (Linear Discriminative Analysis). Classification accuracy obtained shows Bandwidth Approach performs better than MFCC using all these classifiers.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"60 1","pages":"363-368"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75670740","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}
A simulation-based approach provides a hint to study a solution to various problems. To show the feasibility of this approach, this paper focuses on a self-propelled stair climbing wheelchair. This wheelchair was designed to climb up/down a regular and common staircase without any special facilities. Using a solid model for this stair climbing wheelchair, simulation-based analysis was conducted to validate the stair climbing feasibility to fulfill the process-oriented approach, which pursues to enjoy the process as well as to comfortably achieve the goal. The simulation results in this study show that it is possible to climb up/down a staircase but some safety counter measures are required. The idea of counter measures is also presented in this paper. Some conclusions and future directions are made on the feasibility of this project.
{"title":"Simulation-Based Study Using a Stair Climbing Wheelchair","authors":"Teruaki Ito","doi":"10.1109/AMS.2009.89","DOIUrl":"https://doi.org/10.1109/AMS.2009.89","url":null,"abstract":"A simulation-based approach provides a hint to study a solution to various problems. To show the feasibility of this approach, this paper focuses on a self-propelled stair climbing wheelchair. This wheelchair was designed to climb up/down a regular and common staircase without any special facilities. Using a solid model for this stair climbing wheelchair, simulation-based analysis was conducted to validate the stair climbing feasibility to fulfill the process-oriented approach, which pursues to enjoy the process as well as to comfortably achieve the goal. The simulation results in this study show that it is possible to climb up/down a staircase but some safety counter measures are required. The idea of counter measures is also presented in this paper. Some conclusions and future directions are made on the feasibility of this project.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"221 1","pages":"537-542"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74177703","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 paper, optimization is utilized for fuzzy control system that automatically backs up a truck to a specified point on a loading dock. Particle Swarm Optimization with Inertia Weight (FPSOw) is used to fit the membership function of fuzzy system in searching for better decision. From the simulation conducted,it shows that the FPSOw is able to generate an optimal set of parameter for the fuzzy membership functions automatic adjustment and then the adjusted fuzzy system achieve better position for Truck Backer-Upper result.
{"title":"Fitting Membership Function with PSO Inertia Weight for Truck Backer-Upper Problem","authors":"S. Hashim, K. E. Permana","doi":"10.1109/AMS.2009.131","DOIUrl":"https://doi.org/10.1109/AMS.2009.131","url":null,"abstract":"In this paper, optimization is utilized for fuzzy control system that automatically backs up a truck to a specified point on a loading dock. Particle Swarm Optimization with Inertia Weight (FPSOw) is used to fit the membership function of fuzzy system in searching for better decision. From the simulation conducted,it shows that the FPSOw is able to generate an optimal set of parameter for the fuzzy membership functions automatic adjustment and then the adjusted fuzzy system achieve better position for Truck Backer-Upper result.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"7 1","pages":"25-28"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76167020","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 develops the swinging-up control of an inverted pendulum using the Lie-Bäcklund approach to equivalence and flatness. In this system, the friction between the cart and the rail is considered to reach the real system. Two goals of controlling the inverted pendulum are investigated in this work. The first one is to balance the pendulum by applying differential flatness; and the second one is to keep the inverted pendulum in a position of muddled vertical balance along a trajectory, when it initially starts with zero angle of the vertical position. Our main contribution consists in applying the exact flat output for the synthesis of the differential flatness control law. A better precise trajectory tracking is then obtained, with an accurate control signal developed for a particular case of a non minimum phase inverted pendulum.
{"title":"An Exact Differential Flatness Control for a Non Minimum Phase Model of an Inverted Pendulum","authors":"A. Mansour, H. Jerbi","doi":"10.1109/AMS.2009.123","DOIUrl":"https://doi.org/10.1109/AMS.2009.123","url":null,"abstract":"This paper develops the swinging-up control of an inverted pendulum using the Lie-Bäcklund approach to equivalence and flatness. In this system, the friction between the cart and the rail is considered to reach the real system. Two goals of controlling the inverted pendulum are investigated in this work. The first one is to balance the pendulum by applying differential flatness; and the second one is to keep the inverted pendulum in a position of muddled vertical balance along a trajectory, when it initially starts with zero angle of the vertical position. Our main contribution consists in applying the exact flat output for the synthesis of the differential flatness control law. A better precise trajectory tracking is then obtained, with an accurate control signal developed for a particular case of a non minimum phase inverted pendulum.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"7 1","pages":"465-469"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76964492","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}
An abstract interpretation of an adaptive neural network is where each cell is considered as an agent that has internal states and interaction rules along with a set of strategies that modulates its internal states and its interaction with neighboring agents. While the internal states are governed by the processing equation, the selection of strategies is governed by the learning equations. Adaptivity of agents as a collective behavior that perform subspace extraction is observed in many different areas like cell differentiation in multi-cellular organisms, smart fluids, synaptic plasticity in neuronal ensemble and being applied in other areas like economic strategies, social networks, vlsi designing etc and thus studies of such models for more complex architectures (other than traditionally layered) become very relevant for modeling real world applications. Since, no such widely accepted matrix notation for arbitrary graph exists, the study of such network structures is hindered.. In this paper, we study such a recursive cellular network for layered networks and its behavior when applied over a special class of layered architecture where the boundaries of the network are merged.
{"title":"Subspace Extracting Adaptive Cellular Network for Layered Architectures with Circular Boundaries","authors":"Mohit Garg, J. Dhar","doi":"10.1109/AMS.2009.139","DOIUrl":"https://doi.org/10.1109/AMS.2009.139","url":null,"abstract":"An abstract interpretation of an adaptive neural network is where each cell is considered as an agent that has internal states and interaction rules along with a set of strategies that modulates its internal states and its interaction with neighboring agents. While the internal states are governed by the processing equation, the selection of strategies is governed by the learning equations. Adaptivity of agents as a collective behavior that perform subspace extraction is observed in many different areas like cell differentiation in multi-cellular organisms, smart fluids, synaptic plasticity in neuronal ensemble and being applied in other areas like economic strategies, social networks, vlsi designing etc and thus studies of such models for more complex architectures (other than traditionally layered) become very relevant for modeling real world applications. Since, no such widely accepted matrix notation for arbitrary graph exists, the study of such network structures is hindered.. In this paper, we study such a recursive cellular network for layered networks and its behavior when applied over a special class of layered architecture where the boundaries of the network are merged.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"34 1","pages":"85-90"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80877260","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 new novel approach as Achievable Service-Oriented Architecture (“ASOA”). This approach introduces strategic steps to implementation of information systems and technology, which are flexible and robust. There is a scarcity of research substantiation of Quality of Service of SOA and acceptance and implementation of SOA across our current industrial landscape. The adoption of ASOA bridges this research gap in cloud computing and enhances performance of legacy systems, by combining both available and newly designed consumer interfaces using the latest technologies. The best use of available legacy applications in ASOA methodology can generate much better performance of electronics as well as improving the physical supply chain of products to consumers and sales partners. This paper also discusses how business and Information Systems managers can take advantage of ASOA.
{"title":"An Achievable Service-Oriented Architecture ASOA","authors":"Atif Farid Mohammad","doi":"10.1109/AMS.2009.35","DOIUrl":"https://doi.org/10.1109/AMS.2009.35","url":null,"abstract":"This paper presents a new novel approach as Achievable Service-Oriented Architecture (“ASOA”). This approach introduces strategic steps to implementation of information systems and technology, which are flexible and robust. There is a scarcity of research substantiation of Quality of Service of SOA and acceptance and implementation of SOA across our current industrial landscape. The adoption of ASOA bridges this research gap in cloud computing and enhances performance of legacy systems, by combining both available and newly designed consumer interfaces using the latest technologies. The best use of available legacy applications in ASOA methodology can generate much better performance of electronics as well as improving the physical supply chain of products to consumers and sales partners. This paper also discusses how business and Information Systems managers can take advantage of ASOA.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"53 1","pages":"164-169"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80181131","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}
J. Kunovsky, Vlastimil Kaluza, M. Kraus, Václav Šátek
The application of Taylor series has become a standard concept in numerical analysis. Their ability of approximating functions arbitrarily close under certain conditions makes them an ideal tool for the integration of differential equations. Before the appearance of digital computers the analytical determination of Taylor series coefficients, i.e. the calculation of higher derivatives, was regarded as too complicated. In many modern text books on numerical or applied mathematics has even been stated that Taylor series can only be applied as implementation in very special cases. In this paper an outline is presented of establishing Taylor series coefficients of initial problems with polynomials on right-hand sides. The application of recurrent Taylor series to the integration of systems of ordinary differential equations is discussed. The software TKSL for the solution of initial value problems by means of recurrent Taylor series has been developed and many positive results have been obtained.
{"title":"Initial Problems with Polynomials on Right-hand Sides","authors":"J. Kunovsky, Vlastimil Kaluza, M. Kraus, Václav Šátek","doi":"10.1109/AMS.2009.72","DOIUrl":"https://doi.org/10.1109/AMS.2009.72","url":null,"abstract":"The application of Taylor series has become a standard concept in numerical analysis. Their ability of approximating functions arbitrarily close under certain conditions makes them an ideal tool for the integration of differential equations. Before the appearance of digital computers the analytical determination of Taylor series coefficients, i.e. the calculation of higher derivatives, was regarded as too complicated. In many modern text books on numerical or applied mathematics has even been stated that Taylor series can only be applied as implementation in very special cases. In this paper an outline is presented of establishing Taylor series coefficients of initial problems with polynomials on right-hand sides. The application of recurrent Taylor series to the integration of systems of ordinary differential equations is discussed. The software TKSL for the solution of initial value problems by means of recurrent Taylor series has been developed and many positive results have been obtained.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"33 1","pages":"182-187"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90505649","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}
M. Riyadi, M. Ahmadi, J. E. Suseno, Kang Eng Siew, I. Saad, R. Ismail, V. Arora
The carrier velocity for 2-dimensional (2-D) p-type nanostructure was simulated in this paper. According to the energy band diagram, the effective mass (m*) in the p-type silicon is mostly dominated by heavy hole because of the large gap between heavy hole and light hole in k = 0. The carrier concentration calculation for 2-D, based on the Fermi – Dirac statistic on the order of zero ( ), was applied to obtain the intrinsic velocity of carrier, in the term of thermal velocity vth. The results for 2-D carrier velocity were modeled and simulated, and the comparison for degenerate and non-degenerate regime is presented for various temperature and concentration. It is revealed that the velocity is strongly dependent on concentration and becomes independent of temperature at high concentration.
{"title":"Physics-Based Simulation of Carrier Velocity in 2-Dimensional P-Type MOSFET","authors":"M. Riyadi, M. Ahmadi, J. E. Suseno, Kang Eng Siew, I. Saad, R. Ismail, V. Arora","doi":"10.1109/AMS.2009.26","DOIUrl":"https://doi.org/10.1109/AMS.2009.26","url":null,"abstract":"The carrier velocity for 2-dimensional (2-D) p-type nanostructure was simulated in this paper. According to the energy band diagram, the effective mass (m*) in the p-type silicon is mostly dominated by heavy hole because of the large gap between heavy hole and light hole in k = 0. The carrier concentration calculation for 2-D, based on the Fermi – Dirac statistic on the order of zero ( ), was applied to obtain the intrinsic velocity of carrier, in the term of thermal velocity vth. The results for 2-D carrier velocity were modeled and simulated, and the comparison for degenerate and non-degenerate regime is presented for various temperature and concentration. It is revealed that the velocity is strongly dependent on concentration and becomes independent of temperature at high concentration.","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"4 1","pages":"735-738"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86993778","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}
Prediction model is needed for reducing mudflow disaster impact. We assume that mudflow has similar characteristic with fluid dynamic model. Therefore we adopt dynamical model of fluid to build hot mudflow movement model. The general parameters of this model are landscape data, mud volume per-day, and obstacle such as dikes and buildings. In this research we use approximation model using cellular automata to create a novel model for mudflow movement that is simple and powerful model to simulate dynamical model of fluid flow. The important properties in our model as Cellular Automata model are neighbor definition and rules. We use 8 neighbor cells and moment with Gaussian function. Cellular Automata rules are built with landscape data and obstacle data. The simulation result is visualization of mudflow movement as fluid movement that depends on dynamical model characteristics
{"title":"Modeling and Simulation of Hot Mudflow Movement Prediction Using Cellular Automata","authors":"A. Basuki, T. Harsono, K. Arai","doi":"10.1109/AMS.2009.50","DOIUrl":"https://doi.org/10.1109/AMS.2009.50","url":null,"abstract":"Prediction model is needed for reducing mudflow disaster impact. We assume that mudflow has similar characteristic with fluid dynamic model. Therefore we adopt dynamical model of fluid to build hot mudflow movement model. The general parameters of this model are landscape data, mud volume per-day, and obstacle such as dikes and buildings. In this research we use approximation model using cellular automata to create a novel model for mudflow movement that is simple and powerful model to simulate dynamical model of fluid flow. The important properties in our model as Cellular Automata model are neighbor definition and rules. We use 8 neighbor cells and moment with Gaussian function. Cellular Automata rules are built with landscape data and obstacle data. The simulation result is visualization of mudflow movement as fluid movement that depends on dynamical model characteristics","PeriodicalId":6461,"journal":{"name":"2009 Third Asia International Conference on Modelling & Simulation","volume":"26 1","pages":"176-181"},"PeriodicalIF":0.0,"publicationDate":"2009-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89946524","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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