Results 41 to 50 of about 1,162,650 (287)

Lower Bound on the Minimum Distance of Single-Generator Quasi-Twisted Codes

open access: yesMathematics, 2023
We recall a classic lower bound on the minimum Hamming distance of constacyclic codes over finite fields, analogous to the well-known BCH bound for cyclic codes.
Adel Alahmadi   +2 more
doaj   +1 more source

Construction of quasi-cyclic self-dual codes [PDF]

open access: yes, 2017
There is a one-to-one correspondence between ℓ-quasi-cyclic codes over a finite field F q and linear codes over a ring R=F q[Y]/(Y m-1). Using this correspondence, we prove that every ℓ-quasi-cyclic self-dual code of length mℓ over a finite field F q can
이윤진, 이혜숙
core   +2 more sources

Fixation of intraoperative proximal femoral fractures during THA using two versus three cerclage wires - a biomechanical study

open access: yesBMC Musculoskeletal Disorders, 2022
Background Intraoperative proximal femoral fractures (IPFF) are relevant complications during total hip arthroplasty. Fixation using cerclage wires (CW) represents a minimally-invasive technique to address these fractures through the same surgical ...
Toni Wendler   +5 more
doaj   +1 more source

Energy efficient implementation of multi-phase quasi-adiabatic Cyclic Redundancy Check in near field communication [PDF]

open access: yes, 2018
Ultra-low power operation in power-limited portable devices (e.g. cell phone and smartcard) is paramount. Existing conventional CMOS consume high energy. The adiabatic logic technique has the potential of rendering energy efficient operation.
Kale, I., Maheshwari, S., Bartlett, V.
core   +1 more source

Construction of regular quasi-cyclic protograph LDPC codes based on Vandermonde matrices

open access: yes, 2008
In this contribution, we investigate the attainable performance of quasi-cyclic (QC) protograph Low-Density Parity-Check (LDPC) codes for transmission over both Additive White Gaussian Noise (AWGN) and uncorrelated Rayleigh channels.
Sheng Chen   +5 more
core   +1 more source

Quasi-Cyclic LDPC Codes of Column-Weight Two Using a Search Algorithm

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This article introduces a search algorithm for constructing quasi-cyclic LDPC codes of column-weight two. To obtain a submatrix structure, rows are divided into groups of equal sizes.
Michael Liebelt, Gabofetswe Malema
doaj   +2 more sources

Performance-Based Fibre Design for Ultra-High Performance Concrete (UHPC)

open access: yesApplied Sciences, 2022
The paper presents a method to establish a performance-based fibre design of high-strength micro steel fibres for ultra-high-performance concrete (UHPC). The performance-based fibre design considers effects of fibre layout, fibre orientation, and type of
Jan-Paul Lanwer, Martin Empelmann
doaj   +1 more source

Structure and performance of generalized quasi-cyclic codes [PDF]

open access: yesFinite Fields and Their Applications, 2017
Generalized quasi-cyclic (GQC) codes form a natural generalization of quasi-cyclic (QC) codes. They are viewed here as mixed alphabet codes over a family of ring alphabets. Decomposing these rings into local rings by the Chinese Remainder Theorem yields a decomposition of GQC codes into a sum of concatenated codes.
Cem Güneri   +5 more
openaire   +6 more sources

Undrained heating effects on monotonic shear behaviors and critical cyclic stress ratios of deep-sea sediment

open access: yesYantu gongcheng xuebao, 2023
A series of temperature-controlled triaxial tests are conducted on the deep-sea sediment from the Western trough of the South China Sea. The undrained heating effects on undrained shear strength, pore pressure and critical cyclic stress ratio are ...
SUN Anyuan 1, YANG Gang 1, REN Yubin 1, KONG Gangqiang 2, YANG Qing 1
doaj   +1 more source

Spectral Analysis of Quasi-Cyclic Product Codes [PDF]

open access: yesIEEE Transactions on Information Theory, 2016
This paper considers a linear quasi-cyclic product code of two given quasi-cyclic codes of relatively prime lengths over finite fields. We give the spectral analysis of a quasi-cyclic product code in terms of the spectral analysis of the row- and the column-code.
Alexander Zeh, San Ling
openaire   +3 more sources

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