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IPchain: Securing IP Prefix Allocation and Delegation with Blockchain

IPchain: Securing IP Prefix Allocation and Delegation with B...

引用

IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom) Green Computing and Communications (GreenCom)

作者： Jordi Paillisse Miquel Ferriol Eric Garcia Hamid Latif Carlos Piris Albert Lopez Brenden Kuerbis Alberto Rodriguez-Natal Vina Ermagan Fabio Maino Albert Cabellos UPC-BarcelonaTech Barcelona Spain Georgia Institute of Technology School of Public Policy Atlanta GA USA Cisco Systems San Jose CA USA

We present IPchain, a blockchain to store the allocations and delegations of IP addresses, with the aim of easing the deployment of secure interdomain routing systems. Interdomain routing security is of vital importance to the Internet since it prevents unwanted traffic redirections. IPchain makes use of blockchains' properties to provide flexible trust models and simplified management when compared to existing systems. In this paper we argue that Proof of Stake is a suitable consensus algorithm for IPchain due to the unique incentive structure of this use-case. We have implemented and evaluated IPchain's performance and scalability storing around 150k IP prefixes in a 1GB chain.

关键词： IP networks Blockchain Internet Resource management Security Routing consensus algorithm

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Dependable IoT Using Blockchain-Based Technology

Dependable IoT Using Blockchain-Based Technology

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Latin-American Symposium on Dependable Computing, LADC

作者： Avelino F. Zorzo Henry C. Nunes Roben C. Lunardi Regio A. Michelin Salil S. Kanhere Pontifical Catholic University of Rio Grande do Sul (PUCRS) Porto Alegre Brazil Federal Institute of Rio Grande do Sul (IFRS) Porto Alegre Brazil University of New South Wales (UNSW) Sydney Australia

ISBN: (纸本)9781538684900;9781538684894

In the last few years, novel approaches for using blockchain to solve Internet of Things (IoT) security and dependability issues have been proposed. Currently, different solutions were applied to Smart Homes, Smart Cities, Smart Grids, Supply Chains, Industry, and Vehicular Networks scenarios. Despite of that, the main advantages on the adoption of different architectures, models and algorithms proposed in the state of art of blockchain in IoT scenarios are not yet clear. This paper presents some discussion about the usage of blockchain technology in IoT environments and proposes a layer model of blockchains for IoT. In addition, we present an overview of the latest research regarding network architectures, consensus algorithms, data management, and applications. Finally, this paper presents open issues and future trends about blockchain in IoT.

关键词： Blockchain consensus algorithm Computer architecture Bitcoin Proposals Smart contracts

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Gradient-Based Collision Avoidance algorithm for Second-Order Multi-Agent Formation Control 36

Gradient-Based Collision Avoidance Algorithm for Second-Orde...

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第36届中国控制会议

作者： Qinghai Gong Chunyan Wang Zhenqiang Qi Zhengtao Ding Beijing Aerospace Automatic Control Institute Sino-British Joint Advanced Control System Technology Laboratory School of Electrical and Electronic Engineering University of Manchester

ISBN: (纸本)9781538629185

This paper investigates the collision avoidance problem in formation ***,a collision avoidance algorithm is proposed by using the gradient-based ***,a collision-free consensus based formation protocol is developed for a group of second-order systems with the aid of graph *** particular,the formation protocol is designed only based on the relative information obtained via the network connection,without the global information of the ***,simulation results with different topologies verify the effectiveness of the proposed algorithms.

关键词： Multi-Agent Systems formation control gradient-based collision avoidance consensus algorithm

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ComChain: Bridging the Gap Between Public and Consortium Blockchains

ComChain: Bridging the Gap Between Public and Consortium Blo...

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IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom) Green Computing and Communications (GreenCom)

作者： Guillaume Vizier Vincent Gramoli École Polytechnique University of Sydney

As an alternative to the energy greedy proof-of-work, new blockchains constrain the set of participants whose selection is debatable. These blockchains typically allow a fixed consortium of machines to decide upon new transaction blocks. In this paper, we introduce the community blockchain that bridges the gap between these public blockchains and constrained blockchains. The idea is to allow potentially all participants to decide upon “some” block while restricting the set of participants deciding upon “one” block. We also propose an implementation called ComChain that builds upon the Red Belly Blockchain, the fastest blockchain we are aware of. It runs a consensus among the existing community to elect a new community. This reconfiguration speeds up as the number of removed nodes increases.

关键词： Blockchain Peer-to-peer computing consensus algorithm Bridges Public key Reliability Data integrity

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Distributed Economical Dispatch for Renewable Power System with Time-varying Topology and Fluctuating Power Generations

Distributed Economical Dispatch for Renewable Power System w...

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China International Electrical and Energy Conference (CIEEC)

作者： Xia Shiwei Zhang Qian Zou Weiwei Li Gengyin North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewabl Beijing 102206 Peoples R China

ISBN: (纸本)9781509062768

In order to solve the limitations in centralized economical dispatch (ED), a distributed algorithm is properly designed by selecting generator incremental costs as the consensus variables in this paper to solve the ED problem in a center-free manner. The proposed distributed algorithm is more effective than the conventional central one in the situation that the topologies are time-varying. In addition, the convergence rate, as an important performance indicator of distributed algorithm, is also investigated for different communication topologies in this paper. Considering wind power generation with relatively large fluctuations, the proposed algorithm has been tested on a 10-generator system with fluctuating wind power generations, and the simulations have demonstrated the effectiveness of the distributed ED algorithm for power system ED with time-varying power generations and topologies.

关键词： Distributed economic dispatch incremental cost consensus algorithm convergence rate fluctuating power generations

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Resilient Distributed Generation Dispatch in Multi-Microgrid Systems 7

Resilient Distributed Generation Dispatch in Multi-Microgrid...

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7th IEEE Innovative Smart Grid Technologies - Asia (ISGT-Asia)

作者： Asarias, Fredmar N. Pedrasa, Michael Angelo A. Univ Philippines Diliman Elect & Elect Engn Inst Quezon City Philippines

ISBN: (纸本)9781538649503

The concept of microgrid (MG) has been one of the recent developments in power systems and an extension of this concept is the collaboration of multiple microgrids or commonly called as Multi-Microgrid Systems (MMGS). The idea of MMGS is to improve the reliability of power systems by the cooperation of microgrids. This paper presents a fully distributed hierarchical control of MMGS composed of two control levels MMG Level and MG level. An improved model of the consensus based distributed Optimal Power Flow model is also presented by integrating resilience to communication failure. The model is composed of a primary control that seeks the least cost operating conditions using the estimates of missing information, and a secondary control that ensures energy balance in the system. The proposed model was tested in various experiments to show that energy balance was achieved even at the presence of communication failures in the system.

关键词： DC optimal power flow consensus algorithm multi-microgrid distributed optimization hierarchical control

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A Distributed Cooperative Control Strategy for Improving Dynamic Response of AC Microgrid

A Distributed Cooperative Control Strategy for Improving Dyn...

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Chinese Automation Congress (CAC)

作者： Dong, Mi Li, Li Wang, Lina Liu, Zhangjie Tian, Xiaoyu Cent S Univ Sch Informat Sci & Engn Changsha Hunan Peoples R China Beihang Univ Sch Automat Sci & Elect Engn Beijing Peoples R China

ISBN: (纸本)9781538635247

Communication bandwidth inconsistency between traditional secondary control and tertiary control may decrease the economic efficiency of a microgrid. To solve the problem, this study proposes a fully distributed cooperative strategy in secondary level to minimize the operation cost in an AC microgrid and achieve the synchronization of the voltage and frequency. The proposed strategy is based on the incremental cost consensus algorithm with a modified droop control algorithm, and it utilizes the first-order discrete consensus algorithm with a virtual leader to optimize the generation cost. In addition, it can effectively deal with communication failures and improve the robustness of the system. Case studies verified the effectiveness of the proposed method by comparing it with traditional methods.

关键词： communication bandwidth AC microgrid distributed cooperative strategy incremental cost consensus algorithm communication failures

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UUV Localization Using Acoustic Communications, Networking, and a Priori Knowledge of the Ocean Current

UUV Localization Using Acoustic Communications, Networking, ...

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Oceans Aberdeen Conference

作者： Vio, Renato P. Cristi, Roberto Smith, Kevin B. Naval Postgrad Sch Monterey CA 93943 USA Naval Postgrad Sch Engn Acoust Program Monterey CA 93943 USA

ISBN: (纸本)9781509052783

Underwater navigation is particularly challenging due to the fact that a number of navigation aids, such as GPS and similar, are not available. In order to accurately estimate a UUV's position at any time during a mission, we are relying on acoustic communication between the UUV and a network of surface platforms at known locations (reference points). By using the acoustic modems and a model of the environment, the acoustic wave travel time from the UUV to the reference points can be measured and converted into a distance. These distance measurements are then used by a tracking algorithm to improve the UUV positioning accuracy. In previous work [1], a tracking algorithm based on the Unscented Kalman Filter (UKF) was developed presenting satisfactory results. As part of the UUV tracking model, the drift caused by the ocean current was modeled as a random walk and is part of the state of the system. Based on predictions for the ocean current made by different UUVs at different times, a consensus algorithm was developed [2]. The knowledge of the ocean current provided by the consensus algorithm is then used to improve the UUV positioning. The developed algorithms were initially tested using synthetic data. To validate the simulation results, the algorithms were applied to data collected during sea tests that took place in Monterey Bay in August, 2015

关键词： underwater navigation systems acoustic modems unscented Kalman filter consensus algorithm

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Distributed Control algorithm for Optimal Power Allocation of EV Parking Lots

Distributed Control Algorithm for Optimal Power Allocation o...

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2017 IEEE Power & Energy Society General Meeting

作者： Pourbabak, Hajir Xu, Shengyao Chen, Tao Liang, Zheming Su, Wencong Univ Michigan Dept Elect & Comp Engn Coll Engn & Comp Sci Dearborn MI 48128 USA

ISBN: (纸本)9781538622124

This paper proposes a distributed control algorithm for determining the optimal power allocation of EV parking lots. A conventional central controller can be eliminated in order to reduce computational burden, remove single point of failures and improve interoperability. The proposed algorithm can iteratively share and update power mismatch with other parking lots to achieve optimal power allocation. Power mismatch as a shared information does not include any private information;thus, the privacy of the whole system will be improved. In addition, the proposed distributed method is evaluated through two case studies using software simulations.

关键词： Optimal Power Allocation Distributed Control consensus algorithm Electric Vehicles

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Feasibility of Distributed Monitoring and Distributed Control in Power System

Feasibility of Distributed Monitoring and Distributed Contro...

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IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America)

作者： Gamboa, Silvana Orduna, Eduardo Escuela Politec Nacl Dept Automatizac & Control Ind Quito Ecuador Univ Nacl San Juan Inst Energia Elect San Juan Argentina

ISBN: (纸本)9781538633120

This article presents an analysis of the feasibility of executing wide-area monitoring and control functions in a distributed way in the power system, taking advantage of interconnected system's behavior that describes the power system. For this purpose, observability is analyzed when the state estimation is performed in a distributed way and only with local measurements. Also, power system is adjusted to a distributed cooperative control problem based on consensus algorithms. After the analysis presented, it can be concluded that the power system can be represented through a disaggregated model, based on models of interconnected subsystems, which proves the feasibility of executing monitoring or control tasks in a distributed way without information exchange with neighboring areas.

关键词： WAMPAC DCS SCADA Distributed Monitoring Distributed Control Cooperative Control consensus algorithm

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