TC²-MAC: an adaptive MAC protocol for wireless sensor network by Cun-xiang CHEN, Zun-wen HE, Jian-guang JIA, Jing-ming KUANG, Zhong-yu ZHANG, Xiao-bo XU

“…Results show that TC²-MAC has significant adaptabil-ity to the change of network traffic and network topology compared with traditional time division multiple access (TDMA) based MAC.…”
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Various Half-Eigenvalues of Scalar p-Laplacian with Indefinite Integrable Weights by Wei Li, Ping Yan

“…Furthermore, all these half-eigenvalues are continuous in (a,b)∈(ℒγ,wγ)2, where wγ denotes the weak topology in ℒγ space. The Dirichlet and the Neumann half-eigenvalues are continuously Fréchet differentiable in (a,b)∈(ℒγ,‖⋅‖γ)2, where ‖⋅‖γ is the Lγ norm of ℒγ.…”
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Intra-group mutual authentication key agreement protocol based on Chinese remainder theorem in VANET system by Haibo ZHANG, Zhou CHEN, Hongwu HUANG, Xiaofan HE

“…Aiming at the problem that vehicles in the vehicular ad-hoc network (VANET) system were vulnerable to malicious attacks when communicating with each other on the public network, a mutual authentication key agreement protocol in the VANET was proposed.A dynamic vehicle group was established by the Chinese remainder theorem to adapt to the rapid changes in the VANET topology.Signature information was used by both parties in communication to quickly authenticate the identity of the message sender, and key agreement was conduct through the semigroup of Chebyshev chaotic mapping.The pseudonym update and private key update mechanism were adopted to protect the privacy and security of the vehicle’s identity.The identities of malicious vehicles were tracked accurately by using signature information, and were revoked quickly by modifying the public key information.In addition, the semantic security of the protocol was proved by the BAN logic model.The simulation results show that the proposed protocol can effectively reduce the communication consumption and significantly reduce the computational consumption compared with the existing similar literature.…”
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An Approach to Classical Quantum Field Theory Based on the Geometry of Locally Conformally Flat Space-Time by John Mashford

“…For simplicity of exposition we consider LMCSs which have locally Euclidean topology (i.e., are manifolds) and hence are Möbius structures. …”
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Target tracking algorithm for wireless sensor networks based on particle swarm optimization and metropolis-hasting sampling particle filter by Peng JIANG, Hua-hua SONG, Guang LIN

“…And under the dynamic network topology, particle swarm optimization and Metropolis-Hasting sampling are introduced into the resampling period to reduce sample degeneracy. …”
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An Efficient Clustering Protocol for Wireless Sensor Networks Based on Localized Game Theoretical Approach by Dongfeng Xie, Qi Sun, Qianwei Zhou, Yunzhou Qiu, Xiaobing Yuan

“…Game theory has emerged as a brand new approach to model and analyse several problems of wireless sensor networks, such as routing, data collection, and topology control. Recently, a novel clustering mechanism called clustered routing for selfish sensors (CROSS) has been proposed based on game theory. …”
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Load-Balanced Secure Routing Protocol for Wireless Sensor Networks by Wang Xin-sheng, Zhan Yong-zhao, Wang Liang-min

“…Based on structured topology of hexagonal mesh, hops at different directions are calculated on the optimal route for transmitting data packets in LSRP. …”
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Achieving Network Localizability in Nonlocalizable WSN with Moving Passive Event by Xiaolei Zhou, Deke Guo, Tao Chen, Xueshan Luo

“…Compared with the current works, our approach requires no extra hardware cost and any adjustment of the current topology of the network and hence is more feasible in practice. …”
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Design Analysis and Implementation of Parallel Working Arm of Heavy Duty Pouring Robot by Chengke Xu, Chengjun Wang, Yongcun Guo, Long Li, Lüzhong Ma

“…A three-degree-of-freedom parallel working arm based on 2UPR-2RPU mechanism is designed，the topology analysis and degrees of freedom calculation are carried out. …”
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Research on adaptive fast sensing method of large-scale Ad Hoc network states based on four-quadrant classification by BAI Jingjing, ZHU Xiaorong, CUI Tao

“…In large-scale Ad Hoc network, state sensing is a prerequisite for realizing global network view, which provides data support for network troubleshooting, routing decision and dynamic network topology planning. However, the existing single sensing mechanism cannot guarantee the timeliness of state information sensing, and will generate extra network overhead and reduce the network performance. …”
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Research Prospect of Anti-Jamming Strategy for the Satellite Internet by Chen HAN, Aijun LIU, Kang AN

“…As an important infrastructure of the national information system, the satellite internet is of great signifi cance to the national security.Thus, it needs to ensure the validity and reliability of the data transmission in the hostile jamming environment.The threat of smart jamming and the limitation of classical link-layer anti-jamming methods give rise to the new demand of intelligent and networked antijamming solutions.In view of the structural characteristics of the satellite internet and the development trend of modern communication jamming technologies, this paper analyzed the basic architecture of intelligent and networked anti-jamming.Based on the closed-loop strategic of sense-learn-prediction-decision-feedback, intelligent and active anti-jamming decision was made to realized self-confi guration and self-optimization.Based on the cooperative communication between nodes, networked anti-jamming ability was improved by the means of topology control and reconstruction, adjacent resources reallocation, and traffi c load balancing.It provided certain theoretical support for the construction of anti-jamming strategy system to achieved the cross-layer optimization, multi-domain combination, and adaptive intelligence.…”
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Modeling and Analysis of Multifocus Picture Division Algorithm Based on Deep Learning by Hongxia You

“…The multifocus image segmentation algorithm based on deep learning can not only obtain closed and smooth segmentation curves but also adaptively deal with topology changes due to high segmentation accuracy and stable algorithm. …”
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Moving mesh simulations of pitting corrosion by Abu Naser Sarker, Ronald D. Haynes, Michael D. Robertson

“…Materials with varying crystallography are considered. Changing mesh topology due to the merging of pits is also handled. …”
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Application and research of SDN-based management and control technology for optical transport grey-box devices by Qian HU, Guoyong ZHAO, Xiaoli HUO, Junjie LI, Ruiquan JING, Fei YAN, Xiaofeng WU

“…Traditional optical transport network is gradually becoming open and disaggregated, and the chimney-type single-vendor and single-domain management mode is also developing to the multi-vendor and multi-domain management mode with the penetration of software defined network (SDN) concept.Considering the equipment difference and protocol complexity of transport network, application of SDN management and control for transport network faces challenges.Firstly, the concept of grey-box was proposed, which was between black-box and white-box.Then, taking grey-box access OTN as an example, the key technologies of SDN unified management and control of access-type OTN were discussed, including management and control architecture, service template, automatic topology generation, automatic equipment online, remote upgrade of equipment, in-band DCN communication between different vendors, etc.Finally, the application of access-type OTN unified management and control system in real network was described.…”
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(t,k)-diagnosability of exchanged crossed cube under the PMC model by Chen GUO, Zhifang XIAO, Ming LEMG, Shuo PENG, Bo WANG

“…Exchanged crossed cube(ECQ) is one of the latest achievements in the research of topology of novel interconnection networks.ECQ is a more optimized form of organization for multi-processor parallel computers,which retains the advantages of exchanged hypercube and crossed cube in terms of the smaller diameter,fewer links,and lower cost factor,and which indicates more balanced consideration.However,so far,ECQ hadn’t been formally introduced into multi-processor parallel computers.One of the main reasons was that its reliability research wasn’t yet systematic.Among them,the operational reliability represented by diagnosability was the most urgent.ECQ was taken as studying object,after topological analyzing,some important topological properties of ECQ were introduced,which determines the (t,k)-diagnosability of ECQ(s,t) under the PMC model by theoretical deduction and simulation experiments.Simulation results show that ECQ reliability complement and improvement,which provides strong technical support for subsequent application and popularization.…”
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Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network by Wenyu SUN, Weijia ZHANG, Limin WANG

“…Low-orbit satellite internet technology is a highly innovative direction of development with few existing cases.Low-orbit satellite internet systems are characterised by a large number of constituent satellites, frequent topology changes, and complex payload types.The fault categories of such complex systems are diffi cult to be completely mastered with methods such as expert systems or practical engineering experience.Moreover, traditional fault detection and diagnosis methods tailored for a single satellite and a single functionality are diffi cult to predict uncertain faults under sophisticated and transient environment conditions.For the above problems, a fault prediction model based on the deep uncertainty estimation network for low-orbit satellite internet was proposed, and was verifi ed used self-collected data from simulated joint satellite-ground tests.Experimental results showed that the proposed method could improved the detection accuracy of known types of faults and demonstrated particular eff ectiveness in predicting faults of unknown types.…”
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Using Elman Neural Network Model to Forecast and Analyze the Agricultural Economy by Yucong You

“…Secondly, this paper designs an efficient Elman neural network topology and sends the selected important data into the neural network for data learning and neural network parameter optimization, to achieve a more accurate agricultural economic forecasting model. …”
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Annealing dynamics of regular rotor networks: Universality and its breakdown by András Grabarits, Gaetano Sammartino, Adolfo del Campo

“…We investigate the SVL annealing dynamics of classical O(2) rotors on regular graphs, identifying universal features in the nonequilibrium dynamics when changing the range of interactions and the topology of the graph. Regular graphs with low connectance or edge density exhibit universal scaling dynamics consistent with the Kibble-Zurek mechanism, which leads to a power-law dependence of the density of defects and the residual energy as a function of the annealing time. …”
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O espaço é a flor azul do imaginário: Gaston Bachelard e Walter Benjamin em Paris – a descoberta de uma paisagem literária by Valéria Cristina Pereira da Silva, Carlos Fonseca Clamote Carreto

“…Benjamin’s concept of montage, how the flanerie and the poetical topology are articulated. We read works from G. Bachelard (1884-1962) and W. …”
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A Quantization Procedure of Fields Based on Geometric Langlands Correspondence by Do Ngoc Diep

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