Results 61 to 70 of about 1,807,959 (233)

A Method for Calculating of the Efficiency of Communication Systems with Multiple Modulation Types and Multi-Stage Composite Coding

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники
Analytical relations and a methodology for calculating the performance indicators of communication and multimedia broadcasting systems using multi-position modulation types (QAM-M, FM-M, FM-M, CHMS-M, AM-M, OFM-M) and multi-stage coding based on non ...
E. B. Lipkovich, V. V. Rabtsevich
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Explicit Representation and Enumeration of Repeated-Root (δ + αu²)-Constacyclic Codes Over F₂m[u]/‹u

open access: yesIEEE Access, 2020
Let F2(m) be a finite field of 2m elements, λ and k be integers satisfying λ, k ≥ 2 and denote R = F2(m)[u]/(u2λ). Let δ, α ∈ F2(m)×.
Yuan Cao   +4 more
doaj   +1 more source

Codes for Simultaneous Transmission of Quantum and Classical Information

open access: yes, 2017
We consider the characterization as well as the construction of quantum codes that allow to transmit both quantum and classical information, which we refer to as `hybrid codes'.
Grassl, Markus, Lu, Sirui, Zeng, Bei
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

On the Hamming Distances of Constacyclic Codes of Length 5pS

open access: yesIEEE Access, 2020
Let $p$ be a prime, $s$ , $m$ be positive integers, and $\lambda $ be a nonzero element of the finite field $\mathbb {F}_{p^{m}}$ . In this paper, the algebraic structures of constacyclic codes of length $5~p^{s}~(p\neq 5)$ are obtained, which ...
Hai Q. Dinh   +2 more
doaj   +1 more source

Cyclic codes of length 2 m

open access: yesProceedings Mathematical Sciences, 2001
Let \(q\) be an odd prime power, \(\mathbb{F}_q\) the finite field of order \(q\), \(m\) a positive integer, and \(R= \mathbb{F}_q[X]/(X^{2^m}-1)\). The author shows that the following \(m+1\) elements of \(R\) are idempotents, \[ e_0(X):=2^{-m}\sum_{j=0}^{2^m-1}X^j, \qquad e_i(X):=2^{i-m-1}\left(1+\sum_{k=i+1}^m S_k(X)-S_i(X)\right) \] for \(1\leq i ...
openaire   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Combined Source-Channel Coding of Images under Power and Bandwidth Constraints

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper proposes a framework for combined source-channel coding for a power and bandwidth constrained noisy channel. The framework is applied to progressive image transmission using constant envelope M-ary phase shift key (M-PSK) signaling over an ...
Marc Fossorier   +2 more
doaj   +1 more source

On Algebraic Decoding of $q$-ary Reed-Muller and Product-Reed-Solomon Codes

open access: yes, 2007
We consider a list decoding algorithm recently proposed by Pellikaan-Wu \cite{PW2005} for $q$-ary Reed-Muller codes $\mathcal{RM}_q(\ell, m, n)$ of length $n \leq q^m$ when $\ell \leq q$.
Santhi, Nandakishore
core   +1 more source

Home - About - Disclaimer - Privacy