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Cloud distributed Optimal Control of ESS-PV Residential Inverters

Cloud Distributed Optimal Control of ESS-PV Residential Inve...

引用

Power systems and Electrical Technology (PSET), IEEE international Conference on

作者： Byungchul Kim Eyad H. Abed Department of Electrical and Computer Engineering University of Maryland College Park USA

ISBN: (数字)9798350353204

ISBN: (纸本)9798350353211

Perfect power flow methods can be employed to choose which inverters will supply and determine their optimal real and reactive power settings based on financial goals. Utilizing advanced semidefinite relaxation make possible to work out with lessen calculation loads. Reflecting on the complex power inculcation originated by strong robustness and the high resilience of ESS-PV inverter, the steady state voltage security area (SSVSA) for inverter is created. The voltage expedition indicator for inverter is suggested to measure the voltage security limit between the security range and operation state. The suggested scheme balances beneficially to large distribution networks.

关键词： Cloud computing Voltage measurement Simulation Energy Internet Inverters Robustness Steady-state Security Energy management systems Voltage control

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Adaptive Generation of Passive Rational Function Approximations for Electromagnetic Simulation

Adaptive Generation of Passive Rational Function Approximati...

引用

international Review of Progress in Applied Computational Electromagnetics (ACES)

作者： Andria Lemus Francisco Coronado Arif Ege Engin Department of Electrical and Computer Engineering San Diego State University San Diego USA

The output of an electromagnetic solver is usually the tabulated data of simulated network parameters as a function of frequency. There is a need to convert this data to an equivalent circuit model if the data was meant to be used in a transient circuit simulator. This conversion can be done by obtaining first a rational function approximation. Electromagnetic simulations usually involve analysis of passive distributed networks, hence only an approximate finite rational function can be obtained. Moreover, there is no a priori way of determining the order of the rational function. This paper introduces a new method for rational function approximation of frequency-domain electromagnetic simulation data. The proposed adaptive generation (AG) approach allows estimation of the model order for a given error tolerance and does not require any initial estimates or adjustment of hyperparameters. We present an implementation of AG using the recently developed sum of squares (SOS) orthogonal rational approximation (ORA) for extraction of passive equivalent circuit models from simulated input admittance or impedance parameters.

关键词： Adaptation models Adaptive systems Computational modeling Data models Function approximation Impedance Integrated circuit modeling

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RF Hardware Reconfigurability for Privacy-Preserving Integrated Sensing and Communication

RF Hardware Reconfigurability for Privacy-Preserving Integra...

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Joint Communications & Sensing (JC&S), IEEE international Online symposium on

作者： Padmanava Sen Prajnamaya Dass Stefan Köpsell Gerhard P. Fettweis Barkhausen Institut Dresden Germany

ISBN: (数字)9798331531652

ISBN: (纸本)9798331531669

This paper introduces a reconfigurable radio frequency (RF) front-end based management of accuracy and other sensing key performance indicators (KPIs) as means for privacy control in the context of integrated sensing and communications (ISAC). Being part of the sensing devices (especially user equipments), the reconfigurable front-end would enable the users to control dynamically the sensing KPIs of their devices. This would allow the enablement of sensing-based applications while maintaining privacy and ensuring that the sensing application only receives the minimal amount of necessary sensing data. In this work, the use of RF front-end reconfigurability is highlighted for different types of systems and an architecture to integrate the controls in privacy-preserving User Equipments (UEs) is proposed. The active KPI management with RF front-end controls can be a key factor for the deployment of joint/integrated communication and sensing systems without causing a privacy nightmare in future sixth generation (6G) networks.

关键词： Radio frequency 6G mobile communication Privacy Key performance indicator Switches computer architecture Control systems Integrated sensing and communication Software Hardware

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SIGMAR: Ensuring Integrity and Authenticity of Maritime systems using Digital Signatures

SIGMAR: Ensuring Integrity and Authenticity of Maritime Syst...

引用

2021 international symposium on networks, computers and Communications, ISNCC 2021

作者： Hemminghaus, Christian Bauer, Jan Wolsing, Konrad Cyber Analysis Defense Fraunhofer FKIE Wachtberg Germany University Of Bonn Security And Networked Systems Bonn Germany RWTH Aachen University Communication And Distributed Systems Aachen Germany

ISBN: (纸本)9780738113166

distributed maritime bridge systems are customary standard equipment on today's commercial shipping and cruising vessels. The exchange of nautical data, e.g., geographical positions, is usually implemented using multicast network communication without security measures, which poses serious risks to the authenticity and integrity of transmitted data. In this paper, we introduce digital SIGnatures for MARitime systems (SIGMAR), a low-cost solution to seamlessly retrofit authentication of nautical data based on asymmetric cryptography. Extending the existing IEC 61162-450 protocol makes it is possible to build a backward-compatible authentication mechanism that prevents common cyber attacks. The development was successfully accompanied by permanent investigations in a bridge simulation environment, including a maritime cyber attack generator. We demonstrate SIGMAR's feasibility by introducing a proof-of-concept implementation on low-cost and low-resource hardware and present a performance analysis of our approach. © 2021 IEEE.

关键词： Authentication

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Tolerating Compound Threats in Critical Infrastructure Control systems

Tolerating Compound Threats in Critical Infrastructure Contr...

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Reliable distributed systems

作者： Sahiti Bommareddy Maher Khan Huzaifah Nadeem Benjamin Gilby Imes Chiu John W. van de Lindt Omar Nofal Mathaios Panteli Linton Wells Yair Amir Amy Babay Johns Hopkins University University of Pittsburgh Defense Logistics Agency Colorado State University Florida International University University of Cyprus George Mason University

ISBN: (数字)9798331530037

ISBN: (纸本)9798331530044

Compound threats, in which cyberattacks are targeted in the aftermath of a natural hazard, pose an important emerging threat for critical infrastructure. In this paper, we analyze the system design implications of compound threats for power grid SCADA systems for the first time. We introduce a novel compound threat model and develop a tool for analyzing resilience under this threat model. Using our tool, we compare the resilience of existing fault- and intrusion-tolerant SCADA system architectures in case studies based on two power utilities: Hawaiian Electric (HECO) and Florida Power & Light (FPL). We show that no existing system architecture adequately addresses compound threats, but that it is possible to improve resilience to such threats by explicitly considering natural hazards in the system design and by employing a new out-of-band reconfiguration mechanism for intrusion-tolerant systems. However, an important outcome of our work is that compound threats remain a challenging problem, with no complete solution.

关键词： Threat modeling SCADA systems Probability Hazards Critical infrastructure Power system reliability Compounds computer crime System analysis and design Resilience

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SimV: A Self-extension Similarity Viterbi Algorithm for Service Function Chain Deployment for Multi-access Edge Computing

SimV: A Self-extension Similarity Viterbi Algorithm for Serv...

引用

international symposium on Parallel and distributed Processing with Applications, ISPA

作者： Wenqiang Deng School of Computer Science Guangzhou College of Applied Science and Technology Zhaoqing China

ISBN: (数字)9798331509712

ISBN: (纸本)9798331509729

Advancements in Multi-access Edge Computing (MEC) and Network Function Virtualization (NFV) offer a lot of potential for providing flexible and low-latency network services at the edge. In NFV, traditional middleboxes are transformed into Virtual Network Functions (VNFs), which are then combined into Service Function Chains (SFCs) to deliver complex network services. However, the features of MEC hosts and VNFs, along with the heterogeneity of their resources, make it challenging to develop low-latency deployment solutions. In this paper, we formulate the problem of Service Function Chain Deployments in Edge networks to minimize Latency under Heterogeneous conditions (SDELH). To address this problem, we designed a self-extension Similarity Viterbi algorithm (SimV), which contains three sub-algorithms. Firstly, a basic Viterbi algorithm is employed to find the delay-optimized SFC deployment path. Secondly, a similarity algorithm is designed to assess suitable hosts for each VNF to streamline the matching process and reduce the time complexity of the Viterbi algorithm. Lastly, a self-extension method is devised to broaden the solution space for enhancing the SFC acceptance rate. Extensive simulations are conducted. Based on the comparison simulation results, SimV significantly reduces decision time for deployment, and outperforms the compared algorithms in terms of latency, number of accepted requests, and scalability, with average improvements of 20.37%, 6.04%, and 14.49%, respectively.

关键词： distributed processing Multi-access edge computing Viterbi algorithm Service function chaining Scalability Simulation Middleboxes Network function virtualization Low latency communication Time complexity

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On Decentralized Linearly Separable Computation With the Minimum Computation Cost

On Decentralized Linearly Separable Computation With the Min...

引用

IEEE international symposium on Information Theory

作者： Haoning Chen Minquan Cheng Ziyu Zhang Kai Liang Zhenhao Huang Youlong Wu ShanghaiTech University Shanghai China Guangxi Normal University Guilin China

ISBN: (数字)9798350382846

ISBN: (纸本)9798350382853

The distributed linearly separable computation problem finds extensive applications across domains such as dis-tributed gradient coding, distributed linear transform, real-time rendering, etc. In this paper, we investigate this problem in a fully decentralized scenario, where $\mathrm{N}$ workers collaboratively perform the computation task without a central master. Each worker aims to compute a linearly separable computation that can be manifested as $\mathrm{K}_{\mathrm{c}}$ linear combinations of $\mathrm{K}$ messages, where each message is a function of a distinct dataset. We require that each worker successfully fulfill the task based on the transmissions from any $\mathrm{N}_{\mathrm{r}}$ workers, such that the system can tolerate any $\mathrm{N}-\mathrm{N}_{\mathrm{r}}$ stragglers. We focus on the scenario where the computation cost (the number of uncoded datasets assigned to each worker) is minimum, and aim to minimize the communication cost (the number of symbols the fastest $\mathrm{N}_{\mathrm{r}}$ workers transmit). We propose a novel distributed computing scheme that is optimal under the widely used cyclic data assignment. Interestingly, we demonstrate that the side information at each worker is ineffective in reducing the communication cost when $\mathrm{K}_{\mathrm{c}}\leq \text{KN}_{\mathrm{r}}/\mathrm{N}$ , while it helps reduce the communication cost as $\mathrm{K}_{\mathrm{c}}$ increases.

关键词： Costs Symbols Focusing distributed databases Transforms Rendering (computer graphics) Real-time systems

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Research on Trust Management Mechanism in Vehicular Named Data Networking

Research on Trust Management Mechanism in Vehicular Named Da...

引用

international symposium on Parallel and distributed Processing with Applications, ISPA

作者： Rula Sa Haotian Wang Zhen Liu Meiju Yu Jin Zhang College of Computer Science Inner Mongolia University Hohhot China

ISBN: (数字)9798331509712

ISBN: (纸本)9798331509729

VNDN (Vehicular Named Data Networking) applies completely new communication mechanism to the VANET (Vehicular Ad hoc Network), which can effectively improve the efficiency of vehicle communication and reduce communication overhead. However, the dynamic of the vehicle network topology causes malicious nodes to join the network and send fake messages to legitimate nodes, which brings many security challenges to the reliable communication between vehicles in VNDN. Trust management in VNDN is mainly used to evaluate the security and reliability of messages and nodes in the network and is an important technical means in the field of security of VANET. In this paper, we proposed a trust management mechanism, including two parts: a fake message detection mechanism based on multi-attribute decision-making and a malicious node detection mechanism based on LSTM (Long Short-Term Memory). Firstly, the fake message in the network is detected by the vehicle node using multiple attributes, and then the malicious node is detected by LSTM based on the multiple features of the node. Finally, the proposed mechanism is tested by using the data obtained from the simulation experiment on the simulation platform. The experimental results show that the mechanism proposed in this paper can effectively improve the detection effect of fake messages and malicious nodes, and build a reliable trust relationship between nodes, thereby improving the security of VNDN.

关键词： distributed processing Network topology Vehicular ad hoc networks Hidden Markov models Feature extraction Security Reliability Trust management Vehicle dynamics Long short term memory

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Detection and Mitigation of DDoS Attacks on IoT networks Using Machine Learnin

Detection and Mitigation of DDoS Attacks on IoT Networks Usi...

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IEEE international Conference on Multi Topic

作者： Akram Rashid Syed Muhammad Khaliq-Ur-Rahman Raazi Shayhaq Ali Directorate of Informatin Technology Univeristy of Gwadar Gwadar Pakistan Department of Computer Science Mohammed Ali Jinnah University Karachi Pakistan Department of Computer Science Univeristy of Gwadar Gwadar Pakistan

ISBN: (数字)9798331507213

ISBN: (纸本)9798331507220

Smart homes, cities, and healthcare are just a few examples of how the Internet of Things (IoT) simplifies daily life. With the rise of 5G, the number of connected IoT devices is rapidly increasing, expected to surpass 75 billion by 2025. However, this growth also brings significant security risks, particularly the vulnerability of IoT Network to distributed Denial of Service (DDoS) attacks, which can overwhelm networks. In this research, we applied machine learning techniques on the CIC-DDoS 2019 dataset to detect and mitigate DDoS attacks on IoT devices. The results show high accuracy across several models: Logistic Regression (88%), Decision Tree (93%), Random Forest (94%), KNN (93%), Naive Bayes (72%), and SVM (89%). These findings suggest that machine learning is an effective approach for real-time DDoS attack detection and mitigation in IoT networks.

关键词： Support vector machines Prevention and mitigation Urban areas Smart homes Nearest neighbor methods Denial-of-service attack Real-time systems Internet of Things Security Random forests

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Enabling Self-Powered Analog Voice Communication with Photovoltaic Cells and Optical Wireless Links Communication

Enabling Self-Powered Analog Voice Communication with Photov...

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international symposium on Communication systems, networks and Digital Signal Processing, CNSDSP

作者： Mircea Hulea George-Iulian Uleru Alexandru Barleanu Othman Isam Younus Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iasi Iasi Romania Photonics Technology Laboratory Optical Communications Research Group. FEE Northumbria University Newcastle upon Tyne United Kingdom

ISBN: (数字)9798350348743

ISBN: (纸本)9798350348750

The growing demand for energy-efficient communication systems has triggered the interest in using photovoltaic (PV) panels to power optical receivers in Visible Light Communication (VLC) systems. While this approach offers the enticing advantage of self-powered operation, it comes with a significant drawback of limited bandwidth. This limitation severely restricts the maximum data rate achievable through VLC channels, especially when compared to digital audio transmission which requires high bandwidth due to sampling and resolution needs. Therefore, a key challenge lies in finding a balance between the energy-harvesting benefits of PV receivers and the need for a sufficient data rate for specific VLC applications. This work evaluates experimentally the possibility to transmit using VLC the voice in the analogue domain when the transmission of the digital conversion of limited by the bandwidth of the PV-based receiver. The results show that speech can be received properly in analogue domain when the transmission of the digital conversion is not possible due to limited bandwidth of the PV panel. The results show that the PV panel is able to receive speech with cross-correlation factors above 0.94. On the other hand, a 128 KHz digital signal, that is transmitted over the same optical channel, is not visible at the receiver side.

关键词： Wireless communication Photovoltaic systems Stimulated emission Bandwidth Optical receivers Stability analysis Real-time systems

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