An energy-efficient multi-channel MAC protocol for linear sensor network by Fei TONG, Rucong SUI, Yu CHEN, Heng SU, Hengrui LIU, Shangfeng SU, Yuke YAN

“…Sensor nodes in linear sensor network (LSN) are deployed linearly due to the linear topology of the monitoring area.Most of the state-of-the-art medium access control (MAC) protocols designed for LSN adopted the duty-cycling and pipelined-forwarding (DCPF) schemes.They can reduce data propagation delay and network energy consumption but may still cause issues such as transmission competition, interference, and energy hole.To address these issues, an improved DCPF MAC protocol was proposed based on multiple channels and redundant-node deployment for LSN.The extensive simulations based on OPNET demonstrate that, compared with existing protocols, the proposed protocol shows a better performance in terms of energy efficiency, packet delivery ratio, throughput, and packet transmission latency.…”
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A New Perspective to Algebraic Characterization on Controllability of Multiagent Systems by Bo Liu, Housheng Su, Licheng Wu, Shengchao He

“…Recently, algebraic characterization of multiagent controllability through its topology has been widely concerned by the systems and control community. …”
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Extensions of rational modules by J. Cuadra

“…For a coalgebra C, the rational functor Rat (−):ℳC∗→ℳC∗ is a left exact preradical whose associated linear topology is the family ℱC, consisting of all closed and cofinite right ideals of C∗. …”
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Minimum delay algorithm based on time aggregated graph in DTN network by Peng WANG, Hong-yan LI, Tao ZHANG, Peng-yun LI

“…The DTN network has the characteristics of dynamic topology change,thus the routing algorithm of static network can not solve the routing problem of time-varying network,and can not support fast transmission of given tasks.The existing time-variant routing algorithm CGR (contact graph routing) uses the earliest contact to obtain the shortest path,but because of the influence of the order of the connectivity period,the CGR algorithm has low link utilization.To solve this problem,the method of finding the shortest path was proposed.Besides,in order to characterize the relation between the different connect periods of the same link,the time series of node cache was added to the time aggregated graph.Based on this,the end-to-end multi-path shortest delay routing algorithm for the known task requirements was proposed.Finally,the feasibility of the algorithm was proved by an example.…”
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Key Technologies and Protocol Architectures in Heterogeneous Network by Hongyan Liu, Chunjing Hu, Yuan Li

“…Furthermore， the interference problem caused by the variation in network topology， and the schemes for enhanced inter cell interference coordination （eICIC） in the 3rd generation partnership project （3GPP） standardization were focused on. …”
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Mechanism for green unicast routing protection in multi-granularity transport networks by Jun-ling SHI, Xing-wei WANG, Min HUANG

“…The mechanism for green unicast routing protection is designed with the constraint of quality of service (QoS),energy consumption and the survivability of single link or node failure considered.The path is calculated under the constraint of QoS based on K-shortest path algorithm.The resource allocation is done on multi-layer auxiliary graph considering the minimum times of wavelength conversion.Three protection levels are provided according to the service demands.The mechanism is implemented over EON (Europe optical network) topology by simulation.Performance evaluation has been done on the blocking probability,the protecting/working resource ratio and the load balance degree by comparing with certain existent mechanism.It has been shown that the proposed mechanism is both feasible and effective.…”
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Distributed Energy-Efficient Approaches for Connected Dominating Set Construction in Wireless Sensor Networks by Najla Al-Nabhan, Mznah Al-Rodhaan, Abdullah Al-Dhelaan

“…Connected dominating sets (CDSs) have been widely used for virtual backbone construction in WSNs to control topology, facilitate routing, and extend network lifetime. …”
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On the Generalized Weighted Lebesgue Spaces of Locally Compact Groups by I. Akbarbaglu, S. Maghsoudi

“…We study various algebraic and topological properties of the locally convex space 𝐿𝑝(𝐺,Ω). …”
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Design of wavelength rotation graph model applied in wavelength switching optical network by ZHAO Ji-jun1, ZHANG Shu-guang1, ZHAO Wen-yu2

“…Based on distributing uniformly virtual network topology links and associated wavelengths to the surface of rotating sphere,a new wavelength rotation graph model of wavelength switching optical network（WSON） was constructed,and a creative method to solve the routing and wavelength assignment（RWA） problems was proposed.The simulation results show that if the wavelength number of each link is set separately to 4 and 8,the average blocking probability of the RWA based on the rotation graph model reduces by 5.03% and 9.71%,and the average resource utilization increases by 3.3% and 1.54% respectively,as compared with the existing model.This method would be useful for solving the problem of optical network RWA which has wavelength conversion capabilities.…”
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An Improved Backward/Forward Sweep Power Flow Method Based on a New Network Information Organization for Radial Distribution Systems by Saad Ouali, Abdeljabbar Cherkaoui

“…This paper presents a load flow algorithm based on the backward/forward sweep principle, flexible with network topology changes, with an improvement in ensuring a minimum number of searching for connections between nodes in the calculation sequence in the forward and the backward sweep, by organizing the radial distribution system information into a main line and its derivations. …”
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Distributed Energy Management for Port Power System under False Data Injection Attacks by Qihe Shan, Xin Zhang, Qiongyue Zhang, Qiuye Sun

“…Firstly, a hierarchical topology is proposed to allocate the security resources of the port power system. …”
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Intelligent Satellite Internet Maintenance and Management:Progress and Opportunities by Siqi TANG, Zhisong PAN, Guyu HU, Yang WU, Yunbo LI

“…In multi-layer heterogeneous satellite internet, the time-varying topology, dynamic channel quality, unstable satellites and emerging high-dimensional data present daunting challenges to its maintenance and management system.Thanks to its ability to learn from massive historical data or interaction with dynamic environment, artificial intelligence has been considered to be a promising solution to meet the aforementioned challenge.In this paper, we reviewed the research status of intelligent satellite internet maintenance and management technology on the following three aspects, network resource management, traff c fl ow management and network state management.Based on the above introduction, we further discussed the limitation of existing research and discussed promising future research direction of this fi eld as well.…”
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Simulation and application of power transmission network based on SDH by Yunfei GUO, Xiande BU, Shidong LIU, Yao WANG, Wenjie YU

“…The architecture of power optical transmission network simulation was proposed from the equipment layer,network layer and business layer for the target of communication support system for power grid control business,and the principle of SDH prototype simulation based on SSFNET was presented,and the design idea and implementation method of SDH device,network protection and recovery and associated alarm function was described in detail.Finally an example about the SDH communication topology of stable system in Northern Jiangsu Province was given,it realized the basic function of service bearer,fault alarm,channel recovery,route reconstruction,delay monitoring of power optical transmission network,which would provide quantitative analysis method for the communication network risk assessment,fault simulation,and the interaction effect of the power grid control system.…”
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Responsive Envelopes: the Fabric of Climatic Islands by Georges Teyssot

“…For Gilbert Simondon, topology and chronology coincide in the individuation of the living: they are not a priori forms, but the dimensionality of living while it is individualizing. …”
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Adaptive routing and wavelength assignment method based on SDN by Zhongnan ZHAO, Jian WANG, Hongwei GUO

“…Routing and wavelength assignment is an important resource allocation method of all-optical network.Aiming at the problem of traditional method combined with the new architecture,an adaptive multi-objective routing and wavelength assignment method based on SDN was proposed,which could realize the allocation of link resources of all-optical network through self-regulation.Based on the SDN service function chain model,service scheduling time and link service quality were taken as the scheduling objective,routing and wavelength assignment problem was constructed as the 0-1 integer programming problem,meanwhile,binary hybrid topology particle swarm optimization algorithm was used to optimize the network resources for optimal scheduling.The simulation results show that the proposed method is superior to the traditional classical algorithms in the test of recovery time,blocking rate and resource utilization.…”
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Multiple Addressing Coordination and Switching Technology in Space-Integrated-Ground Information Network by Wenlan DIAO, Jianping AN, Yu ZHANG, Han HU

“…The construction requirements and deployment status of the space-integrated-ground integrated information network was analyzed, and the diffi culties in the integration of satellite network and internet was discussed.To tackle the problems of complex network structure, high dynamic topology, diffi cult data compatibility and limited satellite resources, a multi addressing coordination and switching technology based on IP address, ID identifi cation and content name was proposed.In particular, a multi addressing datagram format was designed, and the multi addressing route forwarding mechanism was extended.It could realized the interconnection of heterogeneous networks, the stability of mobile communication, the compatible switching of polymorphic data, and the effi cient routing with low power consumption of satellites.…”
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Conditional diagnosability of exchanged crossed cube under the MM model by Chen GUO, Ming LEMG, Shuo PENG, Bo WANG

“…Exchanged crossed cube (ECQ) was the latest achievement in the study of novel interconnection network topology.ECQ retained the advantages of hypercube such as recursive structure,high partitionability and strong connectivity,with better properties than other variations of hypercube in terms of the smaller diameter,fewer links,and lower cost factor,which indicated more balanced consideration among performance and cost.As the study object,after topological analyzing,some important topological properties and connectivity theorems of ECQ were introduced,then the conditional diagnosability of ECQ(s,t)was determined under the MM model,which was 3s 2− for t≥s≥2.The research results will provide the key parameters for the reliability evaluation of ECQ in the future.So it has important theoretical significance and application value.…”
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An energy saving clustering algorithm based on artificial bee colony in ultra dense network by Pengguang ZHOU, Junwei HUANG, Renchi ZHANG, Hao XU

“…In ultra dense network (UDN),the dense deployment of low power base station (BS) will increase the system's energy consumption and cause the waste of the scarce spectrum resources.Aiming to explore the feasible method of energy saving system and interference coordination,BS sleeping-waking-active mechanism in UDN was proposed,which would reduce the opening time of the sleeping BS.Also an adjusted artificial bee colony algorithm was proposed which used the least colors to dye the BS in topology,then power allocation of active BS in different cluster was optimized.Simulations show that the sleeping-waking-active mechanism can improve the energy efficiency of the system,and the clustering algorithm can promote the spectrum efficiency and throughput.…”
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Service impact analysis and visualization display based on massive real-time monitoring data by Junwen LIU, Shuo CUI, Xiaomeng LI, Zhihong LI, Yang LI

“…With the development of electric power informatization,electric power information systems,interactive data and resource systems are also increasing.The amount of data generated during daily operation,has been a serious challenge to system operation and fault judge.But the traditional way of monitoring is simply to carry out data collection and indifferentiated recording,but no effective information is extracted from the monitoring data,while the means of monitoring can't be intuitive to reflect the system physical layer and business layer topology.Through the collection of electric power information system massive real-time monitoring data,and the collected data for effective extraction,the formation of information was interrelated,the mapping relationship between platform monitoring and upper service was established,thus the visualization of data flow was realized.…”
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Strictly barrelled disks in inductive limits of quasi-(LB)-spaces by Carlos Bosch, Thomas E. Gilsdorf

“…A strictly barrelled disk B in a Hausdorff locally convex space E is a disk such that the linear span of B with the topology of the Minkowski functional of B is a strictly barrelled space. …”
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