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The windowed quadratic phase Fourier transform (WQPFT) combines the localization capabilities of windowed transforms with the phase modulation structure of the quadratic phase Fourier transform (QPFT). This paper investigates fundamental…

泛函分析 · 数学 2025-07-09 Sarga Varghese , Manab Kundu

We investigate how observations of synchrotron intensity fluctuations can be used to probe the sonic and Alfv\'enic Mach numbers of interstellar turbulence, based on mock observations performed on simulations of magnetohydrodynamic…

星系天体物理 · 物理学 2016-05-04 C. A. Herron , Blakesley Burkhart , A. Lazarian , B. M. Gaensler , N. M. McClure-Griffiths

Linear receivers are an attractive low-complexity alternative to optimal processing for multi-antenna MIMO communications. In this paper we characterize the information-theoretic performance of MIMO linear receivers in two different…

信息论 · 计算机科学 2016-11-18 K. Raj Kumar , G. Caire , A. L. Moustakas

We report an extensive numerical study of the small-scale turbulent dynamo at large magnetic Prandtl numbers Pm. A Pm scan is given for the model case of low-Reynolds-number turbulence. We concentrate on three topics: magnetic-energy…

天体物理学 · 物理学 2008-11-26 A. A. Schekochihin , S. C. Cowley , S. F. Taylor , J. L. Maron , J. C. McWilliams

The quasiparticle interferences (QPIs) of a Mott insulator are investigated using the $T$-matrix formalism implemented with the dynamical mean-field theory ($T$-DMFT). In Mott insulating state, because DMFT predicts a singularity in the…

强关联电子 · 物理学 2015-12-07 Shantanu Mukherjee , Wei-Cheng Lee

Developing avoidance or mitigation strategies of runaway electrons (RE) in magnetic confinement fusion (MCF) plasmas is of crucial importance for the safe operation of ITER. In order to develop these strategies, an accurate diagnostic…

等离子体物理 · 物理学 2017-10-25 L. Carbajal , D. del-Castillo-Negrete

This paper presents theory and finite-difference time-domain (FDTD) calculations for a single and arrays of sub-wavelength cylindrical holes in metallic films presenting large transmission. These calculations are in excellent agreement with…

光学 · 物理学 2009-11-13 N. Garcia , Ming Bai

Many media are divided into elementary units with irregular shape and size, as exemplified by domains in magnetic materials, bubbles in foams, or cells in biological tissues. Such media are essentially characterized by geometrical disorder…

生物物理 · 物理学 2021-04-21 Antoine Fruleux , Arezki Boudaoud

The frequency-domain Kalman filter (FKF) has been utilized in many audio signal processing applications due to its fast convergence speed and robustness. However, the performance of the FKF in under-modeling situations has not been…

信号处理 · 电气工程与系统科学 2019-02-20 Wenzhi Fan , Kai Chen , Jing Lu , Jiancheng Tao

Ultrafast electron diffraction (UED) is a technique in which short-pulse electron beams can probe the femtosecond-scale evolution of atomic structure in matter driven far from equilibrium. As an accelerator physics challenge, UED imposes…

The effect of rotation upon the classical two-layer Rayleigh-Taylor instability is considered theoretically and compared with previous experimental results. In particular we consider a two-layer system with an axis of rotation that is…

流体动力学 · 物理学 2016-03-03 Matthew M. Scase , Kyle A. Baldwin , Richard J. A. Hill

Multiple-input multiple-output (MIMO) radar is a relatively new concept in the field of radar signal processing. Many novel MIMO radar waveforms have been developed by considering various performance metrics and constraints. In this paper,…

网络与互联网体系结构 · 计算机科学 2016-11-15 Awais Khawar , Ahmed Abdelhadi , T. Charles Clancy

Confinement of single ions in a novel radio-frequency (RF) quadrupole ion trap with spherical shape is investigated. An optimization of this spherical ion trap (SIT) is carried out in order to suppress its nonlinearity substantially by…

原子物理 · 物理学 2014-11-11 Houshyar Noshad , Mostafa Honari-Latifpour

The recent proliferation of personal wireless communication devices is driving the need for multi-band frequency selective components including multiplexers and dual-band filters. This paper presents a simple technique for transforming a…

系统与控制 · 电气工程与系统科学 2024-05-13 Chandramouli H. Mahadevaswamy , Anup Raju Vasistha , Augustine O. Nwajana

The electron wave function experiences a phase modification at coherent transmission through a quantum dot. This transmission phase undergoes a characteristic shift of $\pi$ when scanning through a Coulomb-blockade resonance. Between…

介观与纳米尺度物理 · 物理学 2017-11-23 H. Edlbauer , S. Takada , G. Roussely , M. Yamamoto , S. Tarucha , A. Ludwig , A. D. Wieck , T. Meunier , C. Bäuerle

This paper presents the results of a comprehensive study on the optimization of the optical system for independent amplitude and phase wavefront manipulation, which is based on a digital micromirror device implementation. The parameters of…

光学 · 物理学 2020-10-05 Alexandra Georgieva , Andrey Belashov , Nikolay V. Petrov

Faraday Rotation-Conversion is the simultaneous rotation of all three Stokes polarization parameters $Q$, $U$, $V$ as an electromagnetic wave propagates through a magnetized plasma. In this regime the Faraday plasma screen is characterized…

高能天体物理现象 · 物理学 2019-05-15 Andrei Gruzinov , Yuri Levin

This study introduces a new approach to optimize the geometrical parameters of pipe diffusers in centrifugal compressors for Micro Gas Turbines, tailored for a 100 kW unit. The methodology draws insights from optimized airfoil-type…

数值分析 · 数学 2024-04-19 Sujal Bhavsar , Santanu DE

Maps of Galactic polarized continuum emission at 1408, 1660, and 1713 MHz towards the local Taurus molecular cloud complex were made with the Effelsberg 100-m telescope. Minima in the polarized emission which are located at the boundary of…

天体物理学 · 物理学 2007-05-23 Maik Wolleben , Wolfgang Reich

A new approach to distributed cooperative beamforming in relay networks with frequency selective fading is proposed. It is assumed that all the relay nodes are equipped with finite impulse response (FIR) filters and use a filter-and-forward…

适应与自组织系统 · 物理学 2016-11-15 Haihua Chen , Alex B. Gershman , Shahram Shahbazpanahi