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We describe an optoelectronic system for simultaneously generating parallel, independent streams of random bits using spectrally separated noise signals obtained from a single optical source. Using a pair of non-overlapping spectral filters…

光学 · 物理学 2015-05-27 Xiaowen Li , Adam B Cohen , Thomas E Murphy , Rajarshi Roy

The generation and manipulation of ultracold atomic ensembles in the quantum regime require the application of dynamically controllable microwave fields with ultra-low noise performance. Here, we present a low-phase-noise microwave source…

Time series forecasting requires capturing patterns across multiple temporal scales while maintaining computational efficiency. This paper introduces AWGformer, a novel architecture that integrates adaptive wavelet decomposition with…

机器学习 · 计算机科学 2026-01-29 Wei Li

Recently, the vulnerability of DNN-based audio systems to adversarial attacks has obtained the increasing attention. However, the existing audio adversarial attacks allow the adversary to possess the entire user's audio input as well as…

音频与语音处理 · 电气工程与系统科学 2021-02-09 Yi Xie , Zhuohang Li , Cong Shi , Jian Liu , Yingying Chen , Bo Yuan

In TDC testing or timing system implementation tasks, it is often desirable to generate signal pulses with fine adjustable time intervals. In delay cell-based schemes, the time adjustment steps are limited by the propagation delays of the…

仪器与探测器 · 物理学 2025-02-10 Jin-yuan Wu

We report in this paper the design, fabrication and experimental characterization of a piezoelectric MEMS microgenerator. This device scavenges the energy of ambient mechanical vibrations characterized by frequencies in the range of 1 kHz.…

其他计算机科学 · 计算机科学 2008-02-22 M. Marzencki , Y. Ammar , S. Basrour

The ability to perform mathematical computations using metastructures is an emergent paradigm that carries the potential of wave-based analog computing to the realm of near-speed-of-light, low-loss, compact devices. We theoretically…

应用物理 · 物理学 2025-02-25 Dimitrios C. Tzarouchis , Brian Edwards , Nader Engheta

A flux compression generator (FCG) is a device generating a high-power electro-magnetic pulse by compressing magnetic flux with the help of explosion. The physical properties of components and materials used for FCG manufacturing and…

加速器物理 · 物理学 2022-11-14 S. Anishchenko , P. Bogdanovich , A. Gurinovich

Wireless communication through dynamic spectrum allocation over microwave bands, essential to accommodate exponentially growing data traffic, requires massive array of radio-frequency (RF) filters for adaptive signal shaping at arbitrary…

应用物理 · 物理学 2023-02-06 Faysal Hakim , Nicholas Rudawski , Troy Tharpe , Roozbeh Tabrizian

This paper addresses the problem of controlling a variable-speed wind turbine with a Doubly Fed Induction Generator (DFIG), modeled as an electromechanically-coupled nonlinear system with rotor voltages and blade pitch angle as its inputs,…

最优化与控制 · 数学 2010-08-10 Yi Guo , S. Hossein Hosseini , John N. Jiang , Choon Yik Tang , Rama G. Ramakumar

We propose a methodology for generating time-dependent turbulent inflow data with the aid of machine learning (ML), which has a possibility to replace conventional driver simulations or synthetic turbulent inflow generators. As for the ML…

流体动力学 · 物理学 2019-06-19 Kai Fukami , Yusuke Nabae , Ken Kawai , Koji Fukagata

Fast surrogate models for expensive simulations are now essential across the sciences, yet they typically operate as black boxes. We present \texttt{GWAgent}, a large language model (LLM)-based workflow that constructs interpretable…

广义相对论与量子宇宙学 · 物理学 2026-05-13 Tousif Islam , Digvijay Wadekar , Tejaswi Venumadhav , Matias Zaldarriaga , Ajit Kumar Mehta , Javier Roulet , Barak Zackay

A control strategy for the electrical current in GMAW processes is proposed. The control is in closed-loop, designed by formal methods, based on a mathematical model of the electrical behavior of the GMAW process, and implemented in C+…

系统与控制 · 电气工程与系统科学 2026-01-14 Alexandre Sanfelici Bazanella , Mateus Gaspary de Freitas

In this paper we introduce StyleWaveGAN, a style-based drum sound generator that is a variation of StyleGAN, a state-of-the-art image generator. By conditioning StyleWaveGAN on both the type of drum and several audio descriptors, we are…

声音 · 计算机科学 2022-08-29 Antoine Lavault , Axel Roebel , Matthieu Voiry

Four kinds of waveguide power dividers with different structures working at 2.856 GHz are developed. By comparing the simulation performances of these four structures, the power divider with matching rod in the middle of its structure has…

加速器物理 · 物理学 2016-07-12 Xiang He , Mi Hou , Jing-Ru Zhang , Yun-Long Chi

We construct few deep generative models of gravitational waveforms based on the semi-supervising scheme of conditional autoencoders and their variational extensions. Once the training is done, we find that our best waveform model can…

天体物理仪器与方法 · 物理学 2021-06-30 Chung-Hao Liao , Feng-Li Lin

A modified method is presented to generate artificial magnetic turbulence that is used for test-particle simulations. Such turbulent fields are obtained from the superposition of a set of wave modes with random polarizations and random…

高能天体物理现象 · 物理学 2013-06-17 R. C. Tautz , A. Dosch

Next-generation wireless networks require enhanced flexibility, efficiency, and reliability in physical layer waveform design to address the challenges posed by heterogeneous channel conditions and stringent quality-of-service demands. To…

信号处理 · 电气工程与系统科学 2026-03-09 Xingyao Zhang , Haoran Yin , Yanqun Tang , Yao Ge , Yong Zeng , Miaowen Wen , Zilong Liu , Yong Liang Guan , Hüseyin Arslan , Giuseppe Caire

At present, fast waveform digitizing circuit is more and more employed in modern physics experiments for processing the signals from an array detector. A new fast waveform sampling digitizing circuit developed by us is presented in this…

仪器与探测器 · 物理学 2015-06-11 HaiBo Yang , Hong Su , Jie Kong , Ke Cheng , JinDa Chen , ChengMing Du , JingZhe Zhang

We describe a high-speed physical random number generator based on a hybrid Boolean network with autonomous and clocked logic gates, realized on a reconfigurable chip. The autonomous logic gates are arranged in a bidirectional ring topology…

混沌动力学 · 物理学 2013-04-30 David P. Rosin , Damien Rontani , Daniel J. Gauthier