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2013 International Conference on Communication Technology (ICCT 2013)

作者： Sai Zhang Minquan Li Bo Rong Haixing Chang Meng Peng You Ding Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University

A new uniplanar printed PIFA with a coupled-feed structure for LTE/WWAN operation is proposed. The PIFA consists of a coupled-feed loop structure and two separated radiators which are able to generate additional bands for the operation. The loop antenna path and the longer radiator can produce a dualresonance generating the required lower band exactly, while three wide bands contributed by the loop path, the loop path with the longer radiator and the loop path with the shorter radiator can form an operating band to cover the(1710–2690 MHz) band. Because of the small size of only 14×70 mm2, the antenna which can cover the required eight bands is therefore very suitable for the modern Ultra-thin laptops.

关键词： PIFA coupled-feed LTE/WWAN operation Ultra-thin laptops

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EPAS: Efficient privacy-preserving authentication scheme for VANETs-based emergency communication

Journal of Software

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Journal of Software 2013年第8期8卷 1914-1922页

作者： Jia, Xuedan Yuan, Xiaopeng Meng, Lixia Wang, Liangmin School of Computer Science and Telecommunication Engineering Jiangsu University Zhenjiang China School of Electronic Engineering and Optoelectronic Techniques NUST Nanjing China Key Laboratory of Intelligent Computing and Signal Processing MOE Anhui University Hefei China

Vehicular Ad Hoc Networks (VANETs) can provide participants with security services and entertainment information during the driving. To guarantee correct and smooth operations of VANETs, it is necessary to achieve efficient authentication with user privacy preserving. Current solutions either cannot satisfy privacy requirements, or are not efficient in message verification. Moreover, all the existing schemes are RSU-based. We, for the first time, apply VANETs to emergency communication during disaster rescue, and effective authentication scheme is proposed in accordance with the actual environment, where there is no fixed road-side unit (RSU). In this paper, we present an efficient identity based signature scheme EPAS, which satisfies conditional privacy requirements through software solution. In aspect of efficiency, both lightweight signature and batch verification are employed to provide effective authentication. Extensive theoretical and experimental analyses demonstrate the security and efficiency of EPAS in terms of privacy-preserving and low authentication delay. © 2013 ACADEMY PUBLISHER.

关键词： Vehicular ad hoc networks

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Automatic image annotation using semantic relevance 13

Automatic image annotation using semantic relevance

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5th International Conference on Internet Multimedia computing and Service, ICIMCS 2013

作者： Zhao, Peng Lu, Yijuan Wang, WenBin Zhu, WeiWei Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei 230601 China Dept. of Computer Science Texas State University San Marcos TX 78666 United States

ISBN: (纸本)9781450322522

Due to the semantic gap between low-level visual feature and high-level semantic concept, image annotation plays an important role in image retrieval. In this paper, an automatic image annotation approach using semantic relevance is proposed. It constructs an improved probabilistic model to characterize different regions' contributions to the semantics more accurately based on the spatial, visual and contextual information of the region. And it also helps expand the coverage of the semantic concept with semantic relevance information. The performance of the proposed approach has been evaluated on the standard Corel dataset. The experimental results have demonstrated its potential and effectiveness. © 2013 ACM.

关键词： Image annotation

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A model of three points for location estimation in wireless sensor networks

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2013 2nd International Symposium on Materials Science and Engineering Technology, ISMSET 2013

作者： Xie, Shao Guo Hu, Yan Jun Wang, Yi Jiang, Fang Liu, Jing Jing Wang, Ying Guan Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education AnHui University Hefei China Key Laboratory of Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai 200050 China

ISBN: (纸本)9783037858028

In this paper, we propose a novel model of three points named TP for location estimation in wireless sensor networks (WSNs) with random deployment of anchor nodes. In this model, we select three anchor nodes which have the strongest received signal strength (RSS) for location estimation, the centroid algorithm and the method of intersection of judgment are used to estimate the location of unknown nodes. To further exploit three nearest intersection points in TP, the enhanced TP (ETP) is proposed. The simulation results show that the proposed models outperform MMSE and BML in terms of the localization accuracy for WSNs. Moreover, the localization accuracy of the proposed models in scenario 2 with random deployment of anchor nodes are better than in scenario 1 with planned deployment of anchor nodes. Additionally, compared with MMSE and BML, ETP and TP can reduce the environmental impact on location estimation. © (2013) Trans Tech Publications, Switzerland.

关键词： Location

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Natural human-computer interaction based on finger tracking

Natural human-computer interaction based on finger tracking

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2013 International Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2013

作者： Xu, Rong Bin Xie, Ying Guo, Xing Zhu, Er Zhou Wu, Jian Guo Key Laboratory of Intelligent Computing and Signal Processing of Ministry Hefei 230039 China School of Computer Science and Technology Anhui University Hefei 230601 China Computer Studies department Anhui University Hefei 230601 China

ISBN: (纸本)9783037858202

Large touch screen systems (LTSS) have been widely used in scientific, industrial, educational and artistic domains. They are easy and natural for people to use. We present a novel touch screen interaction with finger pointing and operating. To track the high freedom of fingertips with quick changes and self-occlusion by using ordinary cameras is a complex and challenging task. We propose a series of computer vision (CV) algorithms to fix initial position, coordinates mapping, fingertip detection, fingertip tracking, fingertip pose recognition, and generate control instructions. Evaluation shows our system is simply implemented and has a great effect. © (2013) Trans Tech Publications, Switzerland.

关键词： Touch screens

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The principle and implementation of novel FRC algorithm

The principle and implementation of novel FRC algorithm

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2013 International Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2013

作者： Xie, Ying Xu, Rong Bin Zuo, Yan Sheng Wu, Jian Guo Key Laboratory of Intelligent Computing and Signal Processing of Ministry Hefei 230039 China Computer Studies department Anhui University Hefei 230601 China School of Computer Science and Technology Anhui University Hefei 230601 China

ISBN: (纸本)9783037858202

FRC technology mainly uses the visual inertia of human eyes which can be regarded as persistence of vision phenomenon by sequential frames. It is especially important to make the 6 bit panel display abundant colors. The paper has deeply researched some possible stripes of the FRC algorithm caused by fixed pattern. A novel stripe removable algorithm has been brought up. It can effectively avoid the horizontal, vertical or diagonal stripe by displaying different temporal and spatial patterns. Various experiments show that the novel algorithm can display high resolution image in the lowly variety devices. © (2013) Trans Tech Publications, Switzerland.

关键词： Display devices

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Low-cost circuit design of EEG signal acquisition for the brain-computer interface system

Low-cost circuit design of EEG signal acquisition for the br...

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International Conference on BioMedical Engineering and Informatics (BMEI)

作者： Lei Zhang Xiao-jing Guo Xiao-pei Wu Beng-yan Zhou Key Laboratory of Intelligent Computing & Signal Processing of Ministry of Education Anhui University Hefei China

Increasing number of research activities and different types of studies in brain-computer interface systems (BCIs) show potential in this young research area. However, BCIs have not become widely applied, most of them are still limited in the laboratory and off-line. One of the important reasons is that: EEG signal acquisition is completed by the professional medical equipments. They are expensive and the parameters of them cannot be flexiblely changed with the specific BCI experiment paradigm. In the paper, a single-channel low-cost circuit of EEG signal acquisition for the BCI system is designed. The circuit is composed of protection circuit, instrumentation amplifier, common mode rejection (CMR) circuit, gain adjustable amplifiers and filters. In order to test this circuit, the circuit simulation and the real-time EEG measurements are implemented. The experimental results show that the circuit is effective with good performance, it is very suitable for the online BCI system.

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Linear projective non-negative matrix factorization

引用

ICIC Express Letters 2013年第8期7卷 2285-2291页

作者： Hu, Lirui Wu, Jianguo Wang, Lei Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University No. 3 Feixi Road Hefei 230039 China School of Computer Science and Technology Nantong University No. 9 Seyuan Road Nantong 226019 China School of Computer Science and Technology Anhui University No. 3 Feixi Road Hefei 230039 China

In order to solve the problem that the iterative method for Linear Projection- Based Non-negative Matrix Factorization (LPBNMF) is complex, a method, called Linear Projective Non-negative Matrix Factorization (LP-NMF), is proposed. In LP-NMF, from projection and linear transformation angle, an objective function of Frobenius norm is defined. The Taylor series expansion is used. An iterative algorithm for basis matrix and linear transformation matrix is derived, and a proof of algorithm convergence is provided. Experimental results show that the algorithm is convergent;relative to Nonnegative Matrix Factorization (NMF), the orthogonality and the sparseness of the basis matrix are better;in face recognition, there is higher recognition accuracy. The method for LP-NMF is effective. © 2013 ICIC International.

关键词： Linear transformations

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Fast Electromagnetic Simulation by Parallel MoM Implemented on CUDA

Fast Electromagnetic Simulation by Parallel MoM Implemented ...

引用

2013 International Symposium on Antennas and Propagation(2013天线与传播国际会议)

作者： Kai-Hong Song Ming Fang Zhi-Xiang Huang Xian-Liang Wu Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039China Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039China

ISBN: (纸本)9781479909216

The keys to electromagnetic simulation of arbitrary configuration of conducting surfaces by method of moments(MoM) are filling of impedance matrix elements and solving of linear equations.A CUDA (Compute Unified Device Architecture)enabled graphics processing unit (GPU) launched by NVIDIA company to accelerate implementation of the fast filling of impedance matrix in MoM based on Rao-Wllton-Glisson (RWG)basis functions was *** LU decomposition method is applied for the solving of linear equations, and a parallel method looping over squares is proposed in CUDA parallel platform, *** GPU numerical results for a usercreated benchmark structures are checked with comparison to CPU results.A noticeable speedup of the filling of impedance matrix (hundreds times) and solving of linear equations (about 10times) is achieved due to the employing of GPU.

关键词： Method of Moments GPU LU Decomposition CUDA

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Study on the Optical Properties of Nanowires Using FDTD Method

Study on the Optical Properties of Nanowires Using FDTD Meth...

引用

2013 International Symposium on Antennas and Propagation(2013天线与传播国际会议)

作者： Zhi-Xiang Huang Jin-Yang Chu Liang Yu Xiang Huang Xian-Liang Wu Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039China Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039China

Finite-difference tine-domain studies of a variety of cylinder arrays with nanometer-scale diameters (nanowires)interacting with light are *** and absorption cross sections for metallic nanoscale objects can be obtained from such *** method is verified by comparing the analytical results for cylindrical *** the optical properties of Ag nanowires and study the explicit time-domain behavior of more cylinders.

关键词： Finite-Difference Time-Domain Method Absorption Cross Section Scattering Cross Section Extinction Cross Section

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