Results 31 to 40 of about 33,922 (251)

Tight Bounds on the Simultaneous Estimation of Incompatible Parameters

open access: yesPhysical Review X, 2021
The estimation of multiple parameters in quantum metrology is important for a vast array of applications in quantum information processing. However, the unattainability of fundamental precision bounds for incompatible observables greatly diminishes the ...
Jasminder S. Sidhu   +3 more
doaj   +1 more source

Aeroacoustic analysis based on FW–H analogy to predict low-frequency in-plane harmonic noise of a helicopter rotor in hover

open access: yesArchives of Mechanics, 2022
The integral formulation of the Ffowcs-Williams and Hawkings (FW–H) analogy, developed by Farassat (known as Farassat’s formulation 1A), is implemented to study the sound generation and propagation of rotating slender bodies.
T. Suresh, O. Szulc, P. Flaszynski
doaj   +1 more source

Quasi-cyclic Generalized LDPC codes with low error floors [PDF]

open access: yes, 2008
In this paper, a novel methodology for designing structured generalized LDPC (G-LDPC) codes is presented. The proposed design results in quasi-cyclic G-LDPC codes for which efficient encoding is feasible through shift-register-based circuits.
Ryan, William E.   +6 more
core   +1 more source

An Efficient Stochastic Linearisation Procedure for the Seismic Optimal Design of Passive Control Devices

open access: yesFrontiers in Built Environment, 2020
The seismic response of structures is often enhanced by introducing passive control devices that can operate through the dissipation of the input energy or by modifying the dynamic characteristics of the main structure.
Giacomo Navarra   +2 more
doaj   +1 more source

MAS: a versatile Landau-fluid eigenvalue code for plasma stability analysis in general geometry

open access: yesNuclear Fusion, 2023
We have developed a new global eigenvalue code, multiscale analysis for plasma stabilities (MAS), for studying plasma problems with wave toroidal mode number ( n ) and frequency ( ω ) in a broad range of interest in general tokamak geometry, based on a ...
J. Bao   +10 more
doaj   +1 more source

On linear complementary pairs of codes [PDF]

open access: yes, 2018
We study linear complementary pairs (LCP) of codes (C, D), where both codes belong to the same algebraic code family. We especially investigate constacyclic and quasicyclic LCP of codes.
Özbudak, Ferruh   +9 more
core   +1 more source

Absolute Position Coding Method for Angular Sensor—Single-Track Gray Codes

open access: yesSensors, 2018
Single-track Gray codes (STGCs) is a type of absolute position coding method for novel angular sensors, because it has single-track property over traditional Gray codes and mono-difference over linear feedback shift register codes.
Fan Zhang   +4 more
doaj   +1 more source

Linear codes over Fq are equivalent to LCD codes for q>3 [PDF]

open access: yes, 2018
Linear codes with complementary duals (LCD) are linear codes whose intersection with their dual are trivial. When they are binary, they play an important role in armoring implementations against side-channel attacks and fault injection attacks. Nonbinary
Yanfeng Qi   +9 more
core   +1 more source

Low-density parity-check codes and their rateless relatives [PDF]

open access: yes, 2011
This survey guides the reader through the extensive open literature that is covering the family of low-density parity-check LDPC codes and their rateless relatives.
Sheng Chen   +5 more
core   +1 more source

Entropy Region and Network Information Theory [PDF]

open access: yes, 2011
This dissertation takes a step toward a general framework for solving network information theory problems by studying the capacity region of networks through the entropy region.
Sormeh Shadbakht, Shadbakht, Sormeh
core   +1 more source

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