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Research on 3G-based mobile self-rescue system for medical emergency

Journal of Networks 2011年第8期6卷 1214-1221页

作者： Dai, Weihui Wang, Chunshi Li, Guoxi Yu, Fei Xu, Chen School of Management Fudan University Shanghai China School of Software Fudan University Shanghai China Jiangsu Provincial Key Lab of Image Processing Image Communications Nanjing University of Posts Telecommunications Nanjing China

With the development of economy and society, people become more fluid, and in the meanwhile there is increasing demand for medical service in mobile environment. Especially when an outdoor accident or Paroxysmal disease happens, the earliest and most effective rescue is offered not by the medical staffs, but by people themselves. At that moment, if the first-aid instruction can be provided by medical experts in time, casualties are expected to be minimized. In combination with 3G communication network, streaming media technology, E-expert system as well as the knowledge about medical diagnostics and emergent treatment, this paper explored a mobile self-rescue system for medical emergency. This system can connect the doctors and patients who are physically separated, and thus help the patients realize self-rescue through the 3G-based mobile communications at anytime and anywhere. © 2011 ACADEMY PUBLISHER.

关键词： Diagnosis

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Spiking neural P systems for arithmetic operations

Spiking neural P systems for arithmetic operations

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6th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2011

作者： Zeng, Xiangxiang Song, Tao Pan, Linqiang Zhang, Xingyi Key Laboratory on Image Processing and Intelligent Control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Key Lab of Intelligent Computing and Signal Processing School of Computer Science and Technology Anhui University Hefei 230039 China

ISBN: (纸本)9780769545141

Recently, Gutiérrez-Naranjo and Leporati considered performing basic arithmetic operations on a new class of bioinspired computing devices - spiking neural P systems (for short, SN P systems). However, the binary encoding mechanism used in their research looks like the encoding approach in electronic circuits, instead of the style of spiking neurons (in usual SN P systems, information are encoded as the time interval between spikes). In this work, three SN P systems are constructed as adder, subtracter and multiplier, respectively. In these devices, a number is inputted to the system as the interval of time elapsed between two spikes received by input neuron, the result of a computation is the time between the moments when the output neuron spikes. © 2011 IEEE.

关键词： Encoding (symbols)

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Data model driven architecture (DMDA)

Data model driven architecture (DMDA)

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4th International Workshop on Advanced Computational Intelligence, IWACI 2011

作者： Chen, Chen Chen, Xueguang Liu, Hong Institute of Systems Engineering Huazhong University of Science and Technology Wuhan 430074 China Key Lab. for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781612843735

Based on the current development of Model Driven Architecture (MDA) in Enterprise Information System (EIS), the paper proposes a DMDA, a new development architecture to improve EIS development speed and quality. The basic idea of the DMDA is to take advantage of formal description, decomposition and re-use on EIS development process to let computer understand development demands of developers and then consequently generate some business models having nothing to do with specific technical realization, combine with specific technical basic platform to finally generate the EIS meeting actual demands based on data model. The practice proves the architecture is capable of simplifying EIS development difficulty, expediting application and development speed, improve development quality and achieve the rapid development purpose. © 2011 IEEE.

关键词： Software design

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A NOVEL CROSS-LAYER STRATEGY OF VIDEO TRANSMISSION TO SOLVE PERFORMANCE ANOMALY IN MULTI-RATE IEEE 802.11 NETWORKS

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Journal of Electronics(China) 2011年第3期28卷 349-358页

作者： Tang Guijin Zhu Xiuchang Key Lab of Image Processing ＆ Communication Nanjing University of Posts and Telecommunications Nanjing 210003 China

When wireless hosts use different rates to transmit data in IEEE 802.11 networks, it will take on the state of performance anomaly which will severely decrease the throughputs of all the higher rate hosts. Hence, it is bad for video service transmission. Considering that video is very sensitive to packet delivery delay but can tolerate some packet losses, we propose a novel cross-layer scheme which takes these two characteristics into consideration. Firstly, the maximum number of retransmissions for a video Medium Access Control (MAC) frame is computed in MAC layer according to video frame rate requirement of application layer and current access delay of MAC layer. Secondly, within the margin of the tolerant Packet Loss Rate (PLR) of application layer, several video MAC frames are allowed to drop so that we can adaptively select the transmission rate as high as possible for the rest of video MAC frames in terms of current channel quality and the maximum number of retransmissions. Experiment results show that the proposed method can reduce the delay and jitter of video service and improve the throughputs of fast hosts. Therefore, it increases the quality of reconstructed video to a certain extent and relieves the performance anomaly of network effectively.

关键词： Multi-rate Video transmission IEEE 802.11 Performance anomaly Cross-layer

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3D Gaze Estimation Based on Facial Feature Tracking

3D Gaze Estimation Based on Facial Feature Tracking

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2011 4th IEEE International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Man Yi Zhao Xinbo Zhang Ke Shaanxi Provincial Key Lab.of Speech & Image Information Processing Northwestern Polytechnical University

ISBN: (纸本)9781612848334

A 3D gaze estimation and tracking algorithm based on facial feature tracking is presented in this ***,we used the Active Shape Model(ASM) to extract facial feature points with a stereo ***,the full 3D pose of head is estimated by comparing the feature points of current pose with initial head *** that,the center of eyeball is obtained based on a 3D eye model which is related to head pose and the middle point of eye ***,optical axis was computed as 3D vectors through the center of eyeball to the center of ***,visual axis was gotten by adding an angle to optical ***,in our system,a one-time personal calibration is used to determine this *** experimental results show the accuracy of our gaze tracking system achieves less than 3 degree.

关键词： gaze tracking gaze estimation head pose facial feature tracking stereo cameras

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Reliability assessments of Chinese high speed railway network

Reliability assessments of Chinese high speed railway networ...

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2011 IEEE International Conference on Service Operations, Logistics and Informatics, SOLI 2011

作者： Zhang, Jianhua Hong, Liu Wang, Shuliang Xu, Xiaoming Department of Control Science and Engineering Key Lab for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan 430074 China University of Shanghai for Science and Technology Shanghai Academy of System Science Shanghai 200093 China

ISBN: (纸本)9781457705731

With the economic developments, high speed railway has been paid many attentions in China and medium- short term planning of Chinese high speed railway network has been formed and most of the railways have been started into operations. In this paper, graph theory and complex network theory are adopted to assess the reliability of Chinese high speed railway network. The topological characteristics and real distances between pairs of stations are discussed to investigate the reliability of Chinese high-speed rail network. Several parameters are presented to investigate the topological characteristics and the reliability and robustness of the network subject to failures. The parameter called unit degree betweenness is proposed to assess the transport capacity of lines connecting with the nodes. The largest degree node-based attacks and the highest betweenness node-based attacks are involved into Chinese high speed railway network to assess the topological reliability and robustness. The results show that the highest betweenness node-based attacks are more effective to destroy the network than the largest degree node-based attacks. Moreover, the cumulative degree distribution and the real mileages of railways between pairs of stations can be fitted by Gauss functions, and the distribution of real shortest distances over all pairs of stations of the network is fitted by a normal distribution function. By the simulations, the critical stations, Guangzhou Station, Zhengzhou Station and Jinan Station for the largest degree node-based attacks, and Wuhan Station, Xuzhou Station and Shijiazhuang Station for the highest betweenness node-based attacks, can be obtained in this paper. © 2011 IEEE.

关键词： Graph theory

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Blurring length estimation using ringing artifacts in a deblurred image

Blurring length estimation using ringing artifacts in a debl...

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3rd International Conference on image Analysis and Signal processing, IASP 2011

作者： Yang, Shuangxue Liu, Hong Liu, Benyong Liao, Xiang School of Computer Science and Information Institute of Intelligent Information Processing Guizhou University Guiyang 550025 China Key Lab. of Sound-Image Material Examination and Authentication Ministry of Public Security of PRC Guiyang 550001 China

ISBN: (纸本)9781612848808

The restoration quality of a motion-blurred image is highly dependent on the estimation accuracy of the motion blurring parameter. This manuscript presents a novel and precise method for estimation of the motion blurring length, wherein the ringing artifact amount of a deblurred image is measured by energy proportion contained in appropriate frequency bands, and a blurring length with minimum ringing artifact amount is taken as the optimal estimation of the true blurring length. Experimental results show good performance of the proposed algorithm in motion blurring length estimation. © 2011 IEEE.

关键词： image enhancement

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Compressive Network Coding for Approximate Sensor Data Gathering

Compressive Network Coding for Approximate Sensor Data Gathe...

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54th Annual IEEE Global Telecommunications Conference (GLOBECOM)

作者： Luo, Chong Sun, Jun Wu, Feng Shanghai Jiao Tong Univ Inst Image Commun & Informat Proc Shanghai 200030 Peoples R China Shanghai Jiao Tong Univ Shanghai Key Lab Digital Media Processing & Commu Shanghai 200030 Peoples R China Microsoft Res Beijing Peoples R China

ISBN: (纸本)9781424492688

This paper presents a joint source and network coding scheme, called compressive network coding (CNC), for approximate data gathering in wireless sensor networks. Injecting the concept of compressive sensing into network coding avoids the all-or-nothing effect of network decoding, allowing CNC to achieve graceful degradation in data precisions when the energy budget is not sufficient. Based on the observation that sensor links are highly unreliable, we formulate the energy constrained multi-source, multi-hop, and multi-path transmission as a network utility maximization (NUM) problem. A practical distributed algorithm is developed to achieve the optimal utility. We carry out simulations over real sensor data. Results show that CNC consistently outperforms conventional network coding, achieving an average gain over 3.7 dB in data reconstruction PSNR. Furthermore, CNC achieves over 10 dB gain for five sensors (out of 53) whose readings contain abrupt changes.

关键词： CNC Computer numerical control NUM problem Network coding Peer to peer computing Relays Temperature measurement Temperature sensors Wireless sensor networks approximate sensor data gathering approximation theory compressive network coding data precisions data reconstruction PSNR distributed algorithm distributed algorithms energy budget gain 10 dB joint source coding scheme multihop transmission multipath transmission network coding network utility maximization problem optimisation sensor links wireless sensor networks wireless sensor networks

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Blurring Length Estimation Using Ringing Artifacts in a Deblurred image

Blurring Length Estimation Using Ringing Artifacts in a Debl...

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2011 International Conference on image Analysis and Signal processing(2011第三届图像分析与信号处理国际会议 IASP 2011)

作者： Hong Liu Shuangxue Yang Benyong Liu Xiang Liao School of Computer Science and Information Institute of Intelligent Information Processing Guizhou Key Lab of Sound-Image Material Examination and Authentication The Ministry of Public Security of PR

ISBN: (纸本)9781612848792

关键词： blurred image restoration blurring kernel motion blur ringing artifacts

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Partical swarm optimization based unequal loss protection of embedded video streams

Partical swarm optimization based unequal loss protection of...

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2010 IEEE 12th International Conference on Communication Technology, ICCT'2010

作者： Hu, Jiajing Hu, Dong Key Lab. of Image Processing and Image Communications of Jiangsu Province Nanjing University of Posts and Telecom Nanjing 210003 China

ISBN: (纸本)9781424468690

This paper presents a new scheme for optimal packetization of scalable multimedia data over lossy network. By assigning an unequal amount of forward error correction (FEC) bits to each segment of transmission packets, the proposed algorithm protects a progressive bitstream generated by a three-dimensional set partitioning in hierarchical trees (3-D SPIHT) algorithm. The partical swarm optimization (PSO) algorithm is used to reasonably allocate bits between source coding and channel coding across packets. Experimental results show that the proposed algorithm provides close to optimal average peak signal-to-noise ratio performance and that its'running time is significantly lower than that of previously known solution. © 2010 IEEE.

关键词： Signal to noise ratio

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