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Innovative Research in applied science, Engineering and Technology (IRASET),Conference on

作者： Badr N’Hili Souhail Barakat Karima Et-Torabi Abdelouahed Mesbahi Ayoub Nouaiti Mohamed Khafallah Departement Of Electrical Engineering LESE Laboratory ENSEM Hassan II University of Casablanca Morocco Laboratory of Computer Science Applied Math and Electrical Engineering EST Moulay Ismail University of Meknes Morocco

ISBN: (数字)9798331532970

ISBN: (纸本)9798331532987

Multilevel inverters have become essential tools in the field of electric energy conversion for both industrial environments and transportation. The performance provided by these converters, particularly in terms of efficiency and the quality of generated electrical signals, has secured them a prominent place in traction applications using asynchronous motors. This document aims to study the performance of an asynchronous motor controlled through a three-phase NPC three-level inverter using a novel modulation technique compared to a two-level inverter. Simulation results are validated using MATLAB/Simulink, while experimental results are obtained using a DSP card for control signal

关键词： Space vector pulse width modulation Total harmonic distortion Induction motors Simulation Transportation Switches Control systems Multilevel inverters Spectral analysis Periodic structures

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Accelerating Traditional Object Detection Methods on Sophisticated Embedded Systems 4th

Accelerating Traditional Object Detection Methods on Sophis...

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4th International Conference on Intelligent Systems and Pattern Recognition, ISPR 2024

作者： Sehairi, Kamal Bouhafs, Abdelkader Boucherit, Ibtissam Mama Bouwmans, Thierry Chouireb, Fatima Department of Physics Laboratory of Applied Sciences and Didactics École Normale Supérieure de Laghouat Laghouat Algeria Department of Electronics Telecommunication Signals and Systems Laboratory University Amar Telidji of Laghouat Laghouat Algeria Department of Computer Science Lab. Mathématiques Image et Applications Université de La Rochelle La Rochelle France

ISBN: (纸本)9783031821523

Identifying and locating objects in images and videos, including elements like traffic signs, vehicles, buildings, and people, constitutes a fundamental and demanding task in computer vision, known as object detection. Due to the higher computing complexity of this technique and the large amount of data carried by the video signal, it is nearly impossible for ordinary general-purpose processors GPPs or CPUs to run these techniques in real-time, especially for embedded systems applications. Therefore, special hardware that can acquire, control, or execute in parallel is required. These specialized hardware systems include Digital Signal Processors DSPs, Field Programmable Gate Arrays FPGAs, Visual Processing Units VPUs, Tensor Processing Units TPUs, Neural Processing Units NPUs or Graphics Processing Units GPUs. This work presents the benefits of accelerating traditional object detection methods on a high-end embedded system, the Jetson Nano Developer Kit. This single computer board is equipped with the Tegra K1 System on Chip SoC, which is composed of a quad-core ARM A15 and 192 cores of Kepler-embedded GPU. Computing acceleration was ensured via the use of the CUDA OpenCV library for both the Histogram of Oriented Gradients HOG and the Haar Cascade Classifier. For VGA resolution, results reveal that the GPU implementation on this embedded system is 1.4× faster than the CPU for the HOG method and 2× for the Haar Cascade Classifier method. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： System-on-chip

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Qudit Dynamical Decoupling on a Superconducting Quantum Processor

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Physical Review Letters 2025年第5期134卷 050601-050601页

作者： Vinay Tripathi Noah Goss Arian Vezvaee Long B. Nguyen Irfan Siddiqi Daniel A. Lidar Department of Physics and Astronomy University of Southern California Los Angeles California 90089 USA Center for Quantum Information Science and Technology University of Southern California Los Angeles California 90089 USA Quantum Nanoelectronics Laboratory Department of Physics University of California at Berkeley Berkeley California 94720 USA Applied Math and Computational Research Division Lawrence Berkeley National Lab Berkeley California 94720 USA Department of Electrical and Computer Engineering University of Southern California Los Angeles California 90089 USA Department of Chemistry University of Southern California Los Angeles California 90089 USA

Multilevel qudit systems are increasingly being explored as alternatives to traditional qubit systems due to their denser information storage and processing potential. However, qudits are more susceptible to decoherence than qubits due to increased loss channels, noise sensitivity, and crosstalk. To address these challenges, we develop protocols for dynamical decoupling (DD) of qudit systems based on the Heisenberg-Weyl group. We implement and experimentally verify these DD protocols on a superconducting transmon processor that supports qudit operation based on qutrits (d=3) and ququarts (d=4). Specifically, we demonstrate single-qudit DD sequences to decouple qutrits and ququarts from system-bath-induced decoherence. We also introduce two-qudit DD sequences designed to suppress the detrimental cross-Kerr couplings between coupled qudits. This allows us to demonstrate a significant improvement in the fidelity of time-evolved qutrit Bell states. Our results highlight the utility of leveraging DD to enable scalable qudit-based quantum computing.

关键词： Qubits

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Learning to impersonate 06

Learning to impersonate

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ICML 2006: 23rd International Conference on Machine Learning

作者： Naor, Moni Rothblum, Guy N. Department of Computer Science and Applied Math Weizmann Institute of Science Rehovot 76100 Israel Computer Science and Artificial Intelligence Laboratory MIT Cambridge MA 02139 United States

ISBN: (纸本)1595933832

Consider Alice and Bob, who have some shared secret which helps Alice to identify Bob-impersonators, and Eve, who does not know their secret. Eve wants to impersonate Bob and "fool" Alice. If Eve is computationally unbounded, how long does she need to observe Bob before she can impersonate him? What is a good strategy for Eve? If (cryptographic) one-way functions exist, an efficient Eve cannot impersonate even very simple Bobs, but if they do not exist, can Eve learn to impersonate any efficient Bob? We formalize these questions in a new computational learning model, which we believe captures a wide variety of natural learning tasks, and tightly bound the number of observations Eve makes in terms of the secret's entropy. We then show that if one-way functions do not exist, then an efficient Eve can learn to impersonate any efficient Bob nearly as well as an unbounded Eve. For the full version of this work see (Naor & Rothblum, 2006).

关键词： Learning systems

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Efficient Factoring Based on Partial Information

Efficient Factoring Based on Partial Information

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Annual International Conference on the Theory and Applications of Cryptographic Techniques, EUROCRYPT 1985

作者： Rivest, Ronald L. Shamir, Adi MIT Laboratory for Computer Science CambridgeMA02139 United States Applied Math. Dept. The Weizmann Institute of Science Rehovot76100 Israel

Many recently proposed cryptosystems are based on the assumption that factoring large composite integers is computationally difficult. In this paper we examine this assumption when the cryptanalyst has "side info... 详细信息

ISBN: (纸本)9783540164685

关键词： Cryptography

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Beam Maps of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Measured with a Drone

IEEE Open Journal of Antennas and Propagation

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IEEE Open Journal of Antennas and Propagation 2025年第3期6卷 928-940页

作者： Tyndall, Will Reda, Alex Shaw, J. Richard Bandura, Kevin Chakraborty, Arnab Halpern, Mark Harris, Maile Kuhn, Emily MacEachern, Joshua Mena-Parra, Juan Newburgh, Laura Ordog, Anna Pinsonneault-Marotte, Tristan Polish, Anna Rose Saliwanchik, Ben Sanghavi, Pranav Siegel, Seth R. Whitmer, Audrey Wulf, Dallas Yale University Department of Physics New HavenCT06511 United States McGill University Department of Physics MontrealQC Canada McGill University Trottier Space Institute MontrealQC Canada University of British Columbia Department of Physics and Astronomy VancouverBC Canada West Virginia University Department of Computer Science and Electrical Engineering MorgantownWV United States West Virginia University Center for Gravitational Waves and Cosmology MorgantownWV United States Johns Hopkins University Applied Physics Laboratory LaurelMD United States Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States University of Toronto Dunlap Institute for Astronomy and Astrophysics TorontoON Canada David A. Dunlap Department of Astronomy and Astrophysics University of Toronto TorontoON Canada Department of Computer Science Math Physics and Statistics University of British Columbia Okanagan Campus KelownaBC Canada Dominion Radio Astrophysical Observatory Herzberg Astronomy and Astrophysics Research Center National Research Council Canada PentictonBC Canada Center for Astrophysics Harvard and Smithsonian CambridgeMA02138 United States Brookhaven National Laboratory Instrumentation Division UptonNY11973 United States Perimeter Institute for Theoretical Physics WaterlooON Canada

We present beam measurements of the CHIME telescope using a radio calibration source deployed on a drone payload. During test flights, the pulsing calibration source and the telescope were synchronized to GPS time, enabling in-situ background subtraction for the full N2 visibility matrix for one CHIME cylindrical reflector. We use the autocorrelation products to estimate the primary beam width and centroid location, and compare these quantities to solar transit measurements and holographic measurements where they overlap on the sky. We find that the drone, solar, and holography data have similar beam parameter evolution across frequency and both spatial coordinates. This paper presents the first drone-based beam measurement of a large cylindrical radio interferometer. Furthermore, the unique analysis and instrumentation described in this paper lays the foundation for near-field measurements of experiments like CHIME. © 2020 IEEE.

关键词： Drones

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Control of a Wind Turbine Emulator Based on Variable Pitch Angle with a Self-Excited Induction Generator 4

Control of a Wind Turbine Emulator Based on Variable Pitch A...

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4th International Conference on Innovative Research in applied science, Engineering and Technology, IRASET 2024

作者： Boutahiri, Chaymaâ Nouaiti, Ayoub Mesbahi, Abdelouahed Hsaini, Abdallah Marhraoui Bouazi, Aziz Moulay Ismail University Ievia Team Est Laboratory Of Computer Science Applied Math And Electrical Engineering Meknès Morocco Systems Hassan Ii University Ensem Laboratory Of Energy & Electrical Casablanca Morocco

ISBN: (纸本)9798350309508

This article highlights the control of an electromechanical wind emulator designed to mimic the behavior of a wind turbine. The emulator employs a self-excited induction generator, which is driven by a DC motor. A DC-DC Buck converter adjusts the rotation speed, adapting to changes in the wind profile. A PI controller is employed to oversee and fine-tune the output current from the converter, ensuring alignment with the characteristics of the wind turbine model in use. The control strategy is crafted to oversee the wind turbine power based on the wind speed. This is achieved by adjusting the pitch angle value and tip speed, aiming to prevent wind turbine from stalling. The efficacy of the implemented control strategy is demonstrated in the Matlab-Simulink environment, where the proposed system is evaluated. The results show accurate tracking and no overshoot. © 2024 IEEE.

关键词： DC motors

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RAISE:A Resilient Anonymous Information Sharing Environment

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computer Modeling in Engineering & sciences 2023年第12期137卷 2743-2759页

作者： Ning Hu Ling Liu Xin Liu Kaijun Wu Yue Zhao Cyberspace Institute of Advanced Technology Guangzhou UniversityGuangzhou510006China Science and Technology on Communication Security Laboratory The 30th Research Institute of China Electronics Technology Group CorporationChengdu610041China College of Computer Engineering and Applied Math Changsha UniversityChangsha410022China

With the widespread application of cloud computing and network virtualization technologies,more and more enterprise applications are directly deployed in the ***,the traditional TCP/IP network transmission model does not fully consider the information security issues caused by the uncontrollable internet *** security communication solutions represented by encrypted virtual private networks(VPN)are facing multiple security *** fact,during the communication process,the user application needs to protect not only the content of the communication but also the behavior of the communication,such as the communication relationship,the communication protocol,and so *** by blockchain and software-defined networking technology,this paper proposes a resilient anonymous information sharing environment,*** RAISE system consists of user agents,a core switching network and a control cluster based on a consortium *** agents are responsible for segmenting,encrypting,and encapsulating user *** core switching network forwards user traffic according to the rules issued by the controller,and the controller dynamically calculates the forwarding rules according to the security *** from onion routing technology,RAISE adopts the controller to replace the onion routing model,which effectively overcomes the uncontrollability of *** dispersed computing model is introduced to replace the TCP/IP pipeline transmission models,which overcomes the problems of anti-tracking and traffic hijacking that cannot be solved by *** propose a blockchain control plane framework,design the desired consensus algorithmand deploy a RAISE systemconsisting of 150 nodes in an internet *** experimental results show that the use of blockchain technology can effectively improve the reliability and security of the control *** maintaining high-performance network transmission,it further provides network communicatio

关键词： Software-defined anonymous communication network blockchain network communication security

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A new family of windows——convolution windows and their applications

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science China(Technological sciences) 2005年第4期48卷 468-480页

作者： ZHANG Jieqiu1,2, LIANG Changhong1 & CHEN Yanpu3 1. Department of applied math. & Phys., College of science, Airforce Engineering University, Xi’an 710051, China 2. National Key laboratory of Antennas and Microwave Technology, Xidian University, Xi’an 710071, China 3. computer Center, Xi’an Communication College, Xi’an 710106, China 1. Department of Applied Math. & Phys. College of Science Airforce Engineering University 710051 Xi’an China 2. National Key Laboratory of Antennas and Microwave Technology Xidian University 710071 Xi’an China 3. Computer Center Xi’an Communication College 710106 Xi’an China

A new family of windows is constructed by convolutions via a few rectangular windows with same time width and is thus referred to as convolution windows. The expressions of the second-order up to the eighth-order convolution windows in both the time and frequency domains are derived. Their applications in high accuracy harmonic analysis of periodic signals are investigated. Comparisons between the proposed windows and some known windows with the same width shows that, when the synchronous deviation of data sampling is slight, the proposed ones have the least effect of spectral leakage. Therefore, the new windows are well suited for high accuracy harmonic analysis and parameter estimation for periodic signals. The error analysis and computer simulations show that the estimation errors, corresponding to frequency, amplitude and phase of every harmonic component of a signal, are proportional to the pth power of the relative frequency deviation in case of the pth-order convolution window is applied to windowing signal of approximately p cycles. By introducing real time adjustment in sampling interval, the proposed algorithm can adaptively trace signal frequency and lead to less sampling synchronous deviation. The proposed approach has the advantages of easy implementation and high measure precision and can be used in harmonic analysis of quasi-periodic signals whose fundamental frequency drifts slowly with time.

关键词： signal processing harmonic analysis window function convolution window synchronous error spoctral leakage

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Runtime verification with state estimation

Runtime verification with state estimation

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2nd International Conference on Runtime Verification, RV 2011

作者： Stoller, Scott D. Bartocci, Ezio Seyster, Justin Grosu, Radu Havelund, Klaus Smolka, Scott A. Zadok, Erez Department of Computer Science Stony Brook University United States Department of Applied Math and Statistics Stony Brook University United States Jet Propulsion Laboratory California Institute of Technology United States

ISBN: (纸本)9783642298592

We introduce the concept of Runtime Verification with State Estimation and show how this concept can be applied to estimate the probability that a temporal property is satisfied by a run of a program when monitoring overhead is reduced by sampling. In such situations, there may be gaps in the observed program executions, thus making accurate estimation challenging. To deal with the effects of sampling on runtime verification, we view event sequences as observation sequences of a Hidden Markov Model (HMM), use an HMM model of the monitored program to "fill in" sampling-induced gaps in observation sequences, and extend the classic forward algorithm for HMM state estimation (which determines the probability of a state sequence, given an observation sequence) to compute the probability that the property is satisfied by an execution of the program. To validate our approach, we present a case study based on the mission software for a Mars rover. The results of our case study demonstrate high prediction accuracy for the probabilities computed by our algorithm. They also show that our technique is much more accurate than simply evaluating the temporal property on the given observation sequences, ignoring the gaps. © 2012 Springer-Verlag.

关键词： State estimation

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