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Generation of Multidirectional Multiscroll Attractors under the Third-Order Jerk System

Generation of Multidirectional Multiscroll Attractors under ...

引用

International Symposium on Information Science and engineering, ISISE

作者： Guobo Xie Pinghua Chen Minghua Liu Faculty of Computer Guangdong University of Technology Guangzhou China School of Electronic and Information Engineering South China University of Technology Guangzhou China

In this paper, An approach for generating multidirectional grid chaotic attractors from a third-order Jerk system is proposed via constructing a series of staircase functions, including two-directional and three-directional multi-scroll chaotic attractors. Its dynamical behaviors are investigated by means of theoretical analysis as well as numerical simulation.

关键词： Chaos Mesh generation Nonlinear equations Information science Grid computing Numerical simulation Circuit simulation Mathematics Manifolds Acceleration

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Alcohol sensing properties of nanosized thick film WO3 doped with y2O3

Alcohol sensing properties of nanosized thick film WO3 doped...

引用

2008 IEEE International Conference on Semiconductor electronics, ICSE 2008

作者： Shahrokh Abadi, M.H. Hamidon, M.N. Shaari, Abdul Halim Abdullah, Norhafizah Misron, Norhisam Salleh, Abu Bakar Wagiran, Rahman Malekzadeh, Mina Electrical and Electronic Department Engineering Faculty Universiti Putra Malaysia 43400 Serdang Selangor Malaysia Department of Physics Science Faculty Universiti Putra Malaysia 43400 Serdang Selangor Malaysia Department of Chemical and Environmental Engineering Faculty Universiti Putra Malaysia 43400 Serdang Selangor Malaysia Institute of Bioscience Universiti Putra Malaysia 43400 Serdang Selangor Malaysia Faculty of Computer and Information Technology Universiti Putra Malaysia 43400 Serdang Selangor Malaysia

ISBN: (纸本)9781424425617

In this paper the response of printed thick-film of WO3 doped by Y2O3 to organic solvent was studied. Different ratio of doping was prepared and changes of film resistance at different temperature in present of vaporized types of alcohol were observed. The results showed a high sensitivity of the film of 80.1%WO3-18.8%Y2O3 to Toluene, Xylene, Methanol, and 2-Propanone (Acetone) at 250, 450, and 550 °C, and higher sensitivity of 94.3%WO3-4.7%Y2O 3 at 350 °C. Microscopic images of the samples including SEM and TEM were observed. EDX and XRD analysis onto the samples also were done. © 2008 IEEE.

关键词： Tungsten compounds

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Assessment of computerized analysis algorithms for one dimension physiologic data with multiple databases

Assessment of computerized analysis algorithms for one dimen...

引用

Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Y. K. Lee M. Bister Y. M. Salleh P. Blanchfield Faculty of Electrical Engineering Universiti Teknologi MARA Shah Alam Malaysia School of Electrical & Electronic Engineering and Computer Science and Information Technology University of Nottingham Shah Alam Malaysia School of Electrical & Electronic Engineering and Computer Science and Information Technology University of Nottingham UK

Software technology enables computerized analysis to offer second opinion in various screening and diagnostic tasks to assist the clinicians. Yet, the performance of these computerized methods for medical images is questioned by experts in CAD research, owing to the use of different databases and criteria for evaluating the computer results for comparison. This paper intends to substantiate this statement by illustrating the effects of such issues with the use of 1D physiologic data and multiple databases. For this purpose, the detection of desaturation events in Sp02 and spike events in EEG are used. This is the first time that comparison between different algorithms on a common basis is carried out on an individual effort. The appraisal for all the algorithms is made on the same databases and criteria. It is surprising to find that issues for 2/3D images concur with those found in 1D data here. In evaluating the accuracy of a new algorithm, a single independent database gives results fast. This paper reveals weaknesses of such an approach. It is hoped that the supportive evidence shown here is enough for researchers to innovate a better platform for credibility in reporting performance comparison of computerized analysis algorithms.

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A New Secure Binding Management Protocol for Mobile IPv6 Networks

A New Secure Binding Management Protocol for Mobile IPv6 Net...

引用

International Symposium on Information Assurance and Security (IAS)

作者： Osama Elshakankiry Andy Carpenter Ning Zhang School of Computer Science University of Manchester Institute of Science and Technology Manchester UK Faculty of Electronic Engineering Minufiya University Egypt

ISBN: (纸本)9780769533247

This paper proposes a novel secure binding management protocol for mobile IPv6 networks for use in the implementation of routing optimization. The idea uses the public key of the home network of a mobile node to cryptographically generate the mobile node's home address and the associated private key to sign the mobile node's authentication requests. In addition, the proposed protocol performs reachability tests for both the home address and the care-of address. The proposed protocol offloads all expensive cryptographic operations from a mobile node to its home agent. The security of the protocol is informally analysed and an initially evaluation of its performance given.

关键词： Manganese Protocols Security Authentication Cryptography Mobile communication Public key

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A directional detector for edge based on difference images

A directional detector for edge based on difference images

引用

IEEE International Conference on Systems, Man and Cybernetics

作者： S. X. Hu Z. S. Wang Z. W. Liao School of Automation Engineering University of Electronic Science and Technology Chengdu China Faculty of Computer Science Sichuan Normal University Chengdu China

In this paper, we propose a novel method for edge detection based on difference images. In order to increase the ability of difference images in direction detection, we propose a maximum modulus technique, whose singularities are located both by the gray differences and maximum gradient directions. That is, the singularities are located along the gradient directions with maximum difference modulus. The whole framework both on theory and application is given in this paper. Experiments show that the new technique has very good visual behaves.

关键词： Image edge detection Detectors Filters Filtering computer science Noise reduction Image converters Automation Application software computer vision

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Skeletonize multi width ribbon-like shapes based on difference images and frenet frame

Skeletonize multi width ribbon-like shapes based on differen...

引用

IEEE International Conference on Systems, Man and Cybernetics

作者： Z. W. Liao Z. S. Wang S. X. Hu Faculty of Computer Science Sichuan Normal University Chengdu China School of Automation Engineering University of Electronic Science and Technology Chengdu China

In this paper, we propose a novel skeletonize method for multi width ribbon-like shapes. The two difference images with vertical and horizontal directions respectively are computed to locate the singularities of the original image. Then the gradient directions of these singularity points are computed. The skeletonization can be obtained by finding the centers of via pair wise singularity points using their gradient directions. The most attracting nature of this method is that it can handle multi width shapes, which is very difficult in conventional methods. The experimental results show that our method is a ldquogoodrdquo method closing to human conception.

关键词： Shape Skeleton Humans Noise shaping Pattern recognition Optical character recognition software computer science Automation Image analysis Image segmentation

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Merged three-terminal magnetotransistor based on the carrier recombination - deflection effect

Merged three-terminal magnetotransistor based on the carrier...

引用

IEEE SENSORS

作者： Chana Leepattarapongpan Naritchapan Penpondee Toempong Phetchakul Weera Phengan Eakalak Chaowicharat Charndet Hruanun Amporn Poyai Thai Microelectronics Center National Electronics and Computer Technology Center Chachoengsao Thailand Electronic research center Department of ElectronicFaculty of Engineering King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand

This article presents a merged three terminals magnetotransistor based on the carrier recombination - deflection effect. This particular magnetotransistor structure relies on the combination of difference of base current and collector current in +x and -x directions. As a result, the output voltage and absolute sensitivity to magnetic field will be double. The structure of magnetotransistor consists of one emitter, two collector and two base contacts. The devices can detect magnetic field in vertical direction (B Z ) by relying on the difference between base current and collector current (DeltaI CB ). From the experiment, with emitter current at 5, 8, and 10 mA, the magnetotransistor had the highest sensitivity of 1.125 mV/mT when emitter current was at 10 mA.

关键词： Magnetic separation Magnetic fields Magnetic sensors Magnetic devices Spontaneous emission Voltage Chaos Microelectronics CMOS process CMOS technology

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A novel non-redundant contourlet transform for robust image watermarking against non-geometrical and geometrical attacks

A novel non-redundant contourlet transform for robust image ...

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2008 5th International Conference on Visual Information engineering (VIE 2008)

作者： Guiduo Duan Anthony TS Ho Xi Zhao Department of Computing Faculty of Engineering and Physical Sciences University of Surrey Guildford Surrey UK School of Computer Science and Engineering University of Electronic Science and Technology Chengdu China

In contrast to conventional methods operating in the wavelet domain, a new robust watermarking algorithm using non-redundant contourlet transform is presented in this paper. We explore the high degree of directionality and anisotropy of this transform to obtain a sparser image representation. Through experiments, we find that most of the energy relations between parent and children non-redundant contourlet coefficients maintain invariant before and after JPEG compression. Performance improvement is obtained by means of embedding a watermark exploiting the modulation of the energy relations. Test results based on 16 set of attacks using 6 images are obtained. The results show that our non-redundant contourlet method is highly robust to different kinds of attacks including non-geometrical and geometrical attacks. These include JPEG 2000 compression (as low as QF=10), 400 pixels circular shifting, and contrast stretching, (as low as 20%). Comparisons with two other wavelet methods further demonstrate the potential of the non-redundant contourlet in digital watermarking applications.

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Short-distance and near-ground signal measurements in a car park of wireless sensor network system at 433 MHz

Short-distance and near-ground signal measurements in a car ...

引用

International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology, ECTI-CON

作者： Kittisak Phaebua Chuwong Phongcharoenpanich Danai Torrungrueng Jatuporn Chinrungrueng Faculty of Engineering and Research Center of Communications and Information Technology King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand Department of Electrical and Electronic Engineering Faculty of Engineering and Technology Asian University Chonburi Thailand National Electronics and Computer Technology Center National Science and Technology Development Agency Pathum Thani Thailand

The short-range and near ground measurements of signal attenuation in the UHF band are performed to study radio wave propagation in a car park for a wireless sensor network application. The measurement setup is based on the radio wave propagation along the row of a parking lot (full of cars) by varying heights of server antenna. In the application, a small antenna and a compact antenna are employed at the server antenna and the sensor antenna respectively, by radiating horizontal polarization. The test points are located under cars and above ground. The transmitter is radiated at 433 MHz with 120 cm, 180 cm and 240 cm of antenna height. The propagation models, such as the two-ray model and the free-space model, are compared with measurement results. These results can be used to approximate the signal level in practical planning of wireless sensor network systems in car parks.

关键词： Antenna measurements Distance measurement Transmission line measurements Receiving antennas Servers Antennas Antennas and propagation

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Two-Rectangular-Printed-Spiral Antenna with U-Strip

Two-Rectangular-Printed-Spiral Antenna with U-Strip

引用

2008 IEEE Antennas and Propagation Society International Symposium (APSURSI 2008), vol.5

作者： Kittisak Phaebua Chuwong Phongcharoenpanich Danai Torrungrueng Jatuporn Chinrungrueng Faculty of Engineering and Research Center for Communications and Information Technology King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand Department of Electrical and Electronic Engineering Faculty of Engineering and Technology Asian University Chonburi Thailand National Electronics and Computer Technology Center National Science and Technology Development Agency Pathum Thani Thailand

ISBN: (纸本)9781424420414

Nowadays, the demand of using wireless sensor network (WSN) has increased [1]. An interesting application of WSN includes Intelligent Transport System (ITS) [2-3]. Efficient traffic management and control requires that real-time traffic data are collected. Traditionally, traffic data are manually obtained with officials or automatically with bulky wired devices that are difficult to install and maintenance. ITS has changed data collecting process with the use of the computers, communications and sensor technology [1]. Much attempt has focused on replacing conventional devices with WSNs to obtain real-time traffic data is of interest. For example, an unsophisticated practical WSN was proposed to monitor vehicular traffic [4]. This system consists of a number of sensor nodes placed at various locations where traffic data are to be monitored. These sensor nodes communicate to the server node installed nearby via RF frequency. The operating frequency is chosen at 433 MHz (ISM band) in order to avoid much higher demanding traffic in 2.4 GHz and to cover a larger area. As the sensor node can be placed on the road surface to monitor real-time traffic, the sensor node must be small. The operating frequency of 433 MHz is very useful with low data rate applications. Additionally, the available equipments at this frequency are now smaller and cheaper. However, the antenna at this frequency is relatively large (35 cm at half-wavelength in free space) due to low operating frequency. Many research works focus on reducing the antenna size and cost. However, the small antenna [5-11] has low resistance with high reactance, which results in high quality factor (Q). Hence, the total radiated power is lower than the stored power in the near field region. We therefore suffer with low total efficiency, bandwidth and gain. The investigations of small antennas with acceptable performance are necessary. There are several miniaturization techniques are applied to reduce the antenna size and

关键词： ANTENNA antennae Traffic data Wireless sensor networks electrical length Dielectric substrates WSN gene Intelligent transportation systems Size reduction Installations Helical antennas real-time traffic operating frequency

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