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Energy-Efficient and Delay-Constrained Routing for different services in Wireless Sensor network

Journal of Convergence Information technology 2012年第5期7卷 233-243页

作者： Liang, Qingwei Yao, Daoyuan Liu, Haitao Key Lab of Wireless Sensor Network and Communications Shanghai Institute of Microsystem and Information Technology Chinese Academy of Science Shanghai 200050 China Wuxi SensingNet Industrialization Research Institute Wuxi 214135 China

To design a routing protocol that saves sensor node energy while meeting the needs of different applications has become a research focus in wireless sensor network. In this paper, we propose Energy-Efficient and Delay-Constrained Routing (EEDCR) protocol, in which delay-sensitive packets are transmitted along the shortest path to minimize their end-to-end delay, while others are sent to the next hop which is selected based on local neighbor information, e.g., the remaining energy, the proportion covered by the length of data in the total length of the queue and the depth, which alleviates congestion at hot spots. The simulation results show that EEDCR reduces the average end-to-end delay, balances the energy consumption, and prolongs network lifetime.

关键词： Sensor nodes

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Leaf image recognition using Fourier transform based on ordered sequence

Leaf image recognition using Fourier transform based on orde...

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8th International Conference on Intelligent Computing technology, ICIC 2012

作者： Yang, Li-Wei Wang, Xiao-Feng Department of Automation University of Science and Technology of China Hefei Anhui 230027 China Intelligent Computing Laboratory Hefei Institute of Intelligent Machines Chinese Academy of Sciences P.O. Box 1130 Hefei Anhui 230031 China Key Lab. of Network and Intelligent Information Processing Hefei University Hefei Anhui 230601 China

ISBN: (纸本)9783642315879

There are a number of leaf recognition methods, but most of them are based on Euclidean space. In this paper, we will introduce a new description of feature for the leaf image recognition, which represents the leaf contour with the ordered sequence. For a leaf image, points on the contour represent the most important information of the leaf. Thus, by extracting serial points of the leaf contour, the unique corresponding ordered sequence can be obtained for a contour. Then, we can compute the amplitude-frequency feature by performing the Discrete Fourier transform on the ordered sequence. Since the low-frequency part of the Fourier transform represents the global information and the high-frequency part the local details, we can adopt the amplitude-frequency feature for leaf image recognition. Experimental results on the famous Swedish library and ICL library show that the proposed feature is effective for leaf image recognition. © 2012 Springer-Verlag.

关键词： Image recognition

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Joint channel-network coding in cooperative communication: Outage behavior and resource allocation

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Advances in Information sciences and Service sciences 2012年第5期4卷 106-113页

作者： Lv, Zheng Yu, Zhijun Liu, Haitao Key Lab of Wireless Sensor Network and Communications Shanghai Institute Of Microsystem and Information Technology Chinese Academy of Science Shanghai 200050 China Wuxi SensingNet Industrialization Research Institute Wuxi Jiangsu 214135 China

In the scenario of up links from users to cooperating nodes are not reliable, we construct a wireless channel model and introduce channel coding and network coding into cooperative communication system and propose a cooperating scheme based on joint channel-network coding. As metric of system performance, according to Shannon theorem, the system outage probability is analyzed and an expression is provided. Based system outage probability, we study the impact of energy and rate allocation, and provide an appropriate allocation coefficients. Analysis and simulation show that, even though the up links from users to cooperating node are not reliable, our cooperating scheme also can achieve spatial diversity, and improve system performance.

关键词： Cooperative communication

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Potential field based routing to support QoS in WSN

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Journal of Computational Information Systems 2012年第6期8卷 2375-2385页

作者： Liang, Qingwei Yao, Daoyuan Deng, Sui Gong, Siliang Zhu, Jian Key Lab. of Wireless Sensor Network and Communications Shanghai Institute of Microsystem and Information Technology Chinese Academy of Science Shanghai 200050 China Wuxi SensingNet Industrialization Research Institute Wuxi 214135 China

To design a routing protocol that saves sensor node energy while meeting the needs of different applications has become a research focus in wireless sensor network. In this paper, we propose Delay-Guaranteed Energy-Efficient Routing (DGEER) protocol, in which delay-sensitive packets are transmitted along the shortest path to minimize their end-to-end delay, while others are sent to the next hop which is selected based on local neighbor information, e.g., the remaining energy, the proportion covered by the length of data in the total length of the queue and the depth, which alleviates congestion at hot spots. The simulation results show that DGEER reduces the average end-to-end delay, balances the energy consumption, and prolongs network lifetime. © 2012 Binary Information Press.

关键词： Sensor nodes

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SAR RANGE AMBIGUITY SUPPRESSION VIA SPARSE REGULARIZATION

SAR RANGE AMBIGUITY SUPPRESSION VIA SPARSE REGULARIZATION

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IEEE International Geoscience and Remote Sensing Symposium

作者： Jian Fang Zongben Xu Chenglong Jiang Bingchen Zhang Wen Hong Ministry of Education Key Lab for Intelligent Networks and Network Security & Xi'an Jiaotong University Science and Technology on Microwave Imaging Laboratory & Institute of Electronics Chinese Academy of Sciences (IECAS)

ISBN: (纸本)9781467311601

Range ambiguity in synthetic aperture radar (SAR) imaging primarily arises from scattered energy of bright targets out-side the interested region. So to reduce the ambiguity, we need to identify these targets additionally, which yields an ill-posed problem. To find a feasible solution where the range ambiguity can be sufficiently reduced, we propose in this paper a new method using compressed sensing, a theory which tells when sparse signal can be reconstruct from undetermined linear system, by observing that the recognizable targets are approximately sparse in the ambiguous range zones. Therefore, it is possible to reconstruct the main region and identify the ambiguous targets simultaneously. The simulation results demonstrate the validation of the proposed method.

关键词： Range Ambiguity Suppression Compressed Sensing L_q Regularization

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Relay power allocation in auction-based game approach

Relay power allocation in auction-based game approach

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IEEE Global Communications Conference

作者： Dan Wu Yueming Cai Zhou, Liang Rodrigues, Joel Institute of Communications Engineering PLA University of Science and Technology The Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Institute de Telecomunicacoes University of Beira Interior

ISBN: (纸本)9781467309202

In this work, with respect to the uncertainty about the individual information, we investigate the relay power allocation problem from the energy-efficient, Pareto optimal, and competitive fairness perspective. At first, we design an easy-implementation energy efficiency metric, which aims at striking a balance between the QoS provisioning and the energy consumption. Then, an auction mechanism is proposed for relay power allocation. By transferring the auction mechanism into a game, we prove the existence, uniqueness, and Pareto optimality of the Nash equilibrium (NE) for our auction game, and show that the allocation strategies from the NE can achieve the energy efficiency in terms of the proposed metric. Next, we develop a distributed relay power allocation algorithm based on our best-response functions to reach the Pareto optimal NE. Importantly, we not only certify the convergence of the proposed algorithm, but also provide quantitative analysis on it. Extensive simulations results are conducted to confirm the validity of the analytical results.

关键词： Wireless cooperative networks Auction theory Energy efficiency Power allocation Outage probability

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Practical privacy for value-added applications in vehicular ad hoc networks 5th

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5th International Conference on Internet and Distributed Computing Systems, IDCS 2012

作者： Zhang, Lei Wu, Qianhong Qin, Bo Domingo-Ferrer, Josep Shanghai Key Laboratory of Trustworthy Computing Software Engineering Institute East China Normal University Shanghai China UNESCO Chair in Data Privacy Dept. of Comp. Eng. and Maths Universitat Rovira i Virgili TarragonaCatalonia Spain Key Lab. of Aerospace Information Security and Trusted Computing Ministry of Education Wuhan University School of Computer China Department of Maths School of Science Xi’an University of Technology China

ISBN: (纸本)9783642348822

Advances in mobile networking and information processing technologies have triggered vehicular ad hoc networks (VANETs) for traffic safety and value-added applications. Most efforts have been made to address the security concerns while little work has been done to investigate security and privacy for value-added applications in VANETs. To fill this gap, we propose a value-added application, specifically, a security and privacy preserving location-based service (LBS) scheme for VANETs. For each LBS transaction, the scheme provides authentication, integrity and non-repudiation for both the service provider and the user. A user can obtain the service in an anonymous way and hence user privacy is well protected. However, a tracing procedure can be invoked to find malicious users, thereby efficiently preventing users from abusing the anonymity provided by the system. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Location based services

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miRDeathDB:a database bridging microRNAs and the programmed cell death

miRDeathDB:a database bridging microRNAs and the programmed ...

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第五届全国生物信息学与系统生物学学术大会暨国际生物信息学前沿研讨会高通量时代的生物信息学与系统生物学

作者： Jianzhen Xu Yan-Hui Li College of Bioengineering Henan University of TechnologyZhengzhouChina 450001 Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences Ministry of EducationPeking University Health Science Center Scientific Data Center Computer Network Information CenterChinese Academy of Sciences

Background:MicroRNAs(miRNAs) are a class of small non-coding RNAs,which negatively regulate protein coding genes at the posttranscriptional *** tiny regulators have been associated to almost all known physiological and pathological *** defects in miRNAs have been implicated in the etiology of many forms of human diseases. Apoptosis,autophagy and programmed necrosis are three distinct yet intimately connected functional modules of programmed cell death(PCD).In the past few years,increasing evidences suggested that aberrant expression of miRNAs regulate different subroutines of *** the roles of miRNAs in PCD network has attracted interests of researchers from a wide range of ***,a knowledge depository,which integrates information for both miRNAs and their targets in PCD network,will be of great help. Methods:Based on PubMed search,we firstly collected literatures which reported the roles of miRNAs in PCD before April ***,these literatures were inspected manually and the miRNAs and their targets genes were *** criterion for selecting PCD associated miRNAs in miRDeathDB is *** morphological or biochemical data should be provided when the miRNAs(or their targets) are manipulated in cell death *** miRDeathDB(http://***/mirdeathdb/) was developed,which allows users to browse,search and analyze the PCD associated miRNAs. Results:In total,210 records covering 86 miRNAs and 95 protein coding genes were collected in five model species:humans(Homo sapiens),mice(Mus musculus),fruit flies (Drosophila melanogaster),rat(Rattus norvegicus) and African frog(Xenopus tropicalis). Users can search the database for both miRNAs and protein coding entries based on principal *** addition,users can browse and obtain full lists of miRNAs involved in PCD for any given *** data can be freely downloaded or accessed via our website for academic uses. Conclusions:miRDeathDB provides a valuab

关键词： microRNAs apoptosis autophagy necrosis

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Numen: network risk evaluation based on naïve bayes-based attack tree

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International Journal of Advancements in Computing technology 2012年第21期4卷 466-472页

作者： Wang, Hongbing Jing, Qi Liu, Heng Wang, Zhao Cheng, Li National Computer network Emergency Response technical Team Coordination Center of China Beijing China School of Software and Microelectronics Peking University Beijing China Institute Of Computing Technology Chinese Academy Of Sciences Beijing China School of Electronics Engineering and Computer Science Peking University Beijing China Key Lab of NSSA MoE China

Attack Tree has been widely used in network risk evaluation. However, in most situations attack trees can only describe the network risk in a visualized way and without any analysis of risk probabilities. This paper proposes Numen, a novel network risk evaluation mechanism based on an improved type of attack tree which is called naïve bayes-based attack tree. The Bayesian network theory is adopted to quantify the probability value of the leaf node in attack trees. The experiment shows that this mechanism is effective and it can provide help for laying a security policy effectively.

关键词： Risk assessment

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miRDeathDB: a database bridging microRNAs and the programmed cell death

miRDeathDB: a database bridging microRNAs and the programmed...

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第五届全国生物信息学与系统生物学学术大会

作者： Jianzhen Xu Yan-Hui Li College of Bioengineering Henan University of Technology Zhengzhou China 450001 Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences Ministry of Education Peking University Health Science Center 38 Xueyuan Road Haidian District Beijing China 100191 Scientific Data Center Computer Network Information Center Chinese Academy of SciencesBeijing China 100190

Background: MicroRNAs (miRNAs) are a class of small non-coding RNAs, which negatively regulate protein coding genes at the posttranscriptional *** tiny regulators have been associated to almost all known physiological and pathological *** defects in miRNAs have been implicated in the etiology of many forms of human ***, autophagy and programmed necrosis are three distinct yet intimately connected functional modules of programmed cell death (PCD).In the past few years, increasing evidences suggested that aberrant expression of miRNAs regulate different subroutines of *** the roles of miRNAs in PCD network has attracted interests of researchers from a wide range of ***, a knowledge depository, which integrates information for both miRNAs and their targets in PCD network, will be of great ***: Based on PubMed search, we firstly collected literatures which reported the roles of miRNAs in PCD before April ***, these literatures were inspected manually and the miRNAs and their targets genes were *** criterion for selecting PCD associated miRNAs in miRDeathDB is *** morphological or biochemical data should be provided when the miRNAs (or their targets) are manipulated in cell death *** miRDeathDB (http://***/mirdeathdb/) was developed, which allows users to browse, search and analyze the PCD associated ***: In total, 210 records covering 86 miRNAs and 95 protein coding genes were collected in five model species: humans (Homo sapiens), mice (Mus musculus), fruit flies (Drosophila melanogaster), rat (Rattus norvegicus) and African frog (Xenopus tropicalis).Users can search the database for both miRNAs and protein coding entries based on principal *** addition, users can browse and obtain full lists of miRNAs involved in PCD for any given *** data can be freely downloaded or accessed via our website for academic ***: miRDe

关键词： microRNAs apoptosis autophagy necrosis

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