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2011 IEEE 13th International Conference on Communication Technology(ICCT 2011)

作者： Eng.S.M.Khaled Reza S.M.Mohsin Reza Masters Program in Computational Engineering (Distributed Systems Engineering) Faculty of Computer Science Dresden University of Technology Dresden Germany Masters Program in Information Technology (Embedded Systems Engineering) Faculty of Computer Science Electrical Engineering and Information Technology University of Stuttgart Germany

In the current era of technology,the Internet and web technologies become the center source of *** to the huge amount of contents,one of the main challenges of modern information technology is aimed at how to reduce and manage information in a structured way with mobilizing users to the similar kind of relevant ***,any intelligent system should be able to understand people's interest about a particular type of information and automatically mobilize him to the similar kind of available information *** idea of high level Activity Streams along with its standardized format can play a vital role to solve this problem in the broader *** paper introduces a novel system called CoASGen (Consolidation and Activity Streams Generator) which is able to automatically generate high level Activity Streams after aggregating and consolidating from different independent systems (*** a software company context:version management system,wikis,bug trackers etc.).It retrieves life time information as heterogeneous web feed by sensing user activities from those independent systems and then it transforms several similar types of atomic activities into high level Activity Streams using semantic technologies along with its specific standardized ***,it shows these high level Activity Streams to the user interface which is able to automatically motivate users to find relevant information easily without either missing any data or losing valuable *** system solves the problem "data silos" by reducing and managing information in a structured way.

关键词： Activity Streams,Atomic Activity,High Level Activity Stream,CoASGen System

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State space modeling of Memristor-based Wien oscillator

State space modeling of Memristor-based Wien oscillator

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International Conference on Microelectronics, ICM

作者： A. Talukdar A. G. Radwan K. N. Salama Electrical Engineering Program King Abdullah University of Science and Technology Thuwal Saudi Arabia Department of Engineering Mathematics Faculty of Engineering Cairo University Egypt

State space modeling of Memristor based Wien `A' oscillator has been demonstrated for the first time considering nonlinear ion drift in Memristor. Time dependant oscillating resistance of Memristor is reported in both state space solution and SPICE simulation which plausibly provide the basis of realizing parametric oscillation by Memristor based Wien oscillator. In addition to this part Memristor is shown to stabilize the final oscillation amplitude by means of its nonlinear dynamic resistance which hints for eliminating diode in the feedback network of conventional Wien oscillator.

关键词： Decision support systems Hafnium

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The effect of numerical techniques on differential equation based chaotic generators

The effect of numerical techniques on differential equation ...

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International Conference on Microelectronics, ICM

作者： M. Affan Zidan A. G. Radwan K. N. Salama Electrical Engineering Program King Abdullah University of Science and Technology Thuwal Saudi Arabia Department of Engineering Mathematics Faculty of Engineering Cairo University Egypt

In this paper, we study the effect of the numerical solution accuracy on the digital implementation of differential chaos generators. Four systems are built on a Xilinx Virtex 4 FPGA using Euler, mid-point, and Runge-Kutta fourth order techniques. The twelve implementations are compared based on the FPGA used area, maximum throughput, maximum Lyapunov exponent, and autocorrelation confidence region. Based on circuit performance and the chaotic response of the different implementations, it was found that less complicated numerical solution has better chaotic response and higher throughput.

关键词： Correlation Generators Field programmable gate arrays Maximum likelihood estimation Throughput Chaotic communication

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Design, implementation and analysis of fully digital 1-D controllable multiscroll chaos

Design, implementation and analysis of fully digital 1-D con...

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International Conference on Microelectronics, ICM

作者： A. S. Mansingka A. G. Radwan K. N. Salama Electrical Engineering Program Division of Physical Sciences and Engineering King Abdullah University of Science and Technology Thuwal Saudi Arabia Department of Engineering Mathematics Faculty of Engineering Cairo University Cairo Egypt

This paper introduces the fully digital implementation of a 1-D multiscroll chaos generator based on a staircase nonlinearity in the 3rd-order jerk system using the Euler approximation. For the first time, digital design is exploited to provide real-time controllability of (i) number of scrolls, (ii) position in 1-D space, (iii) Euler step size and (iv) system parameter. The effect of variations in these fields on the maximum Lyapunov exponent (MLE) is analyzed. The system is implemented using Verilog HDL and synthesized on an Xilinx Virtex 4 FPGA, exhibiting area utilization less than 3.5% and high performance with experimentally verified throughput up to 3.33 Gbits/s. This fully digital system enables applications in modulation schemes and chaos-based cryptosystems without analog to digital conversion.

关键词： Maximum likelihood estimation Chaotic communication Generators Field programmable gate arrays Approximation methods Hardware design languages

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The study of Optical Behaviour POROUS SILICON (PSI) DOPED with ERBIUM (Er) by PHOTOLUMINESCENCE Technique

The Study of Optical Behaviour POROUS SILICON (PSI) DOPED wi...

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IEEE Colloquium on Humanities, science and engineering

作者： N. I. Ikhsan S. Abdullah M. Rusop School of Physics and Material Study Faculty of Applied Science Universiti Teknologi MARA Shah Alam NANO-ElecTronic Centre Faculty of Electrical Engineering Universiti Teknologi MARA Shah Alam

ISBN: (纸本)9781467300216

Porous Silicon (PS) doped Erbium (Er) has been studied where Er on PSi is involved interaction of silicon and silicon dioxide. The Er doping process was carried out by immersion technique with electrolyte composed of Erbium (III) nitrate pentahydrate (Er_3NO_3OH_5) and Ethanol. The photoluminescence (PL) effect on PSi samples have been studied and shows a PL intensity is improves at certain mass percentage of Erbium (Er) and the PL peak shifts to the blue luminescence. The result shows that when the Erbium diffuses into a pore, an enhancement of the photoluminescence was obtained for all Erbium used concentration. The photoluminescence of porous silicon (PS) was increased at about 12%. It was also found that the photoluminescence became stable at certain point after the dopant solution continually to increase. All samples show a broad nanocrystal-related luminescence spectrum centered around 700 nm to 725 nm. So it concluded that the porous silicon doped with erbium is able to increase the photoluminescence intensity.

关键词： Porous silicon Erbium doping Photoluminescence Quenching effect

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Analysis of dielectric constants of slaughtered and non-slaughtered chicken

Analysis of dielectric constants of slaughtered and non-slau...

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Electronics, Communications and Photonics Conference (SIECPC), Saudi International

作者： Abdallah Belal Adam Nadia Hayati Md Nasukha Department of Physic Faculty of Science University of Hail Saudi Arabia Electrical and Electronic Engineering Program Universiti Teknologi Petronas Bandar Seri Iskandar Tronoh Perak Malaysia

Muslims have genuine concerns regarding origin of the meat at the market. On the other hand, several Muslim countries import meat whose origin is doubtful and bearing an unverifiable HALAL-label. This is because there is no intelligence device available to check either meat is slaughtered or not? Therefore, the purpose of this study is to determine the values of the dielectric constant of chicken at respective applied frequency of 30.0 Hz, 250.0 KHz and 3.0 MHz. In order to simulate on RC circuit as well as to determine characteristic properties that can differentiate between slaughtered and non-slaughtered chicken using the capacitance measurement technique. The slaughtered and non slaughtered chicken is used as the dielectric medium of the capacitor in the RC circuit. The different values of dielectric constant are obtained from variation of the dielectric medium of the meat as a capacitor. The testing and variation of the capacitance values could determine the status of the meat either slaughtered or not. The results showed that; the frequency of 250 KHz gives stable outputs. In addition, a significant deviation of dielectric constant between slaughtered and non-slaughtered chicken has been observed. The values of dielectric constant of slaughtered chicken appear to be lower than those of non-slaughtered chicken. The result indicates a potential sensing property that able to distinguish between slaughtered and non-slaughtered meat.

关键词： Capacitors Dielectric constant Capacitance Conductivity Permittivity Voltage measurement

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Reducing time delays on congested road networks using social navigation

Reducing time delays on congested road networks using social...

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IEEE Forum on Integrated and Sustainable Transportation System (FISTS)

作者： Alje van den Bosch Bart van Arem Mohamed Mahmod James Misener Department of Applied Mathematics Faculty of Electrical Engineering Mathematics and Computer Science University of Twente Netherlands Partners for Advanced Transit and Highways (PATH) program University of California Berkeley USA Department of Transport and Planning at the Faculty of Civil Engineering and Geosciences Delft University of Technnology Netherlands Centre of Transport Studies Faculty of Engineering University of Twente Enschede Netherlands

Social navigation provides drivers with an advice that aims to shift traffic flows in a network from a user equilibrium to a system optimum. The advice is based on minimizing a combination of the individual travel time and the marginal total travel time in the network. The level of altruism defines the extent to which a driver is willing to sacrifice his own travel time in favor of other drivers. Fuel consumption and CO2 emission are taking into account by converting them into time equivalent. Experimental results for a small network loosely representing the Bay area show that social navigation can reduce time delays by 10%. The reduction is positively correlated with network load, market penetration and level of altruism.

关键词： Navigation Driver circuits Vehicles Fuels Vehicle dynamics Roads Approximation methods

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A parallel architecture for ray-tracing with an embedded intersection algorithm

A parallel architecture for ray-tracing with an embedded int...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Alexandre S. Nery Nadia Nedjah Felipe M.G. França Lech Jozwiak LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhovan University of Technology Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro (UERJ) Brazil

Real time rendering of three-dimensional scenes in Ray Tracing is a hard problem. However, parallel implementations have been enabling real time performance, as the algorithm can be highly parallelized. Thus, a custom parallel design in hardware is likely to achieve a good performance. In this paper, we further improve the GridRT architecture overall performance by embedding the ray-triangle intersection computation into the precessing elements that form the architecture. Low cost and high rendering performance are the main concerns in this novel design. The results show that the execution time of each intersection computation is reduced by at least 50%, while the area cost is practically unchanged or even reduced when compared to the original GridRT implementation.

关键词： Ray tracing Registers Equations USA Councils Mathematical model Parallel architectures

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Hardware Reuse in Modern Application-Specific Processors and Accelerators

Hardware Reuse in Modern Application-Specific Processors and...

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Euromicro Symposium on Digital System Design

作者： Alexandre S. Nery Lech Jozwiak Menno Lindwer Mauro Cocco Nadia Nedjah Felipe M.G. Franca LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhoven University of Technology Netherlands Silicon Hive-Intel UMG Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro Brazil

Effective exploitation of the application-specific parallel patterns and computation operations through their direct implementation in hardware is the base for construction of high-quality application-specific (re-)configurable application specific instruction set processors (ASIPs) and hardware accelerators for modern highly-demanding applications. Although it receives a lot of attention from the researchers and practitioners, a very important problem of hardware reuse in ASIP and accelerator synthesis is clearly underestimated and does not get enough attention in the published research. This paper is an effect of an industry and academic collaborative research. It analyses the problem of hardware sharing, shows its high practical relevance, as well as a big influence of hardware sharing on the major circuit and system parameters, and its importance for the multi-objective optimization and tradeoff exploitation. It also demonstrates that the state-of-the-art synthesis tools do not sufficiently address this problem and gives several guidelines related to enhancement of the hardware reuse.

关键词： Hardware Resource management Computer architecture Optimization program processors Adders Delay

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Lecture Notes in Computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2011年 6532 LNAI卷

作者： Bosse, Tibor Geller, Armando Jonker, Catholijn M. Vrije Universiteit Amsterdam Faculty of Sciences Department of Artificial Intelligence De Boelelaan 1081 1081 HV Amsterdam Netherlands George Mason University Krasnow Institute for Advanced Study Department of Computational Social Science 4400 University Drive Fairfax VA 22030 United States Delft University of Technology Faculty of Electrical Engineering Mathematics and Computer Science Department of Mediametics Mekelweg 4 2628 CD Delft Netherlands

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