Results 21 to 30 of about 70,590 (211)

Plaguicidas organoclorados en murciélagos (Chiroptera) asociados al bosque húmedo tropical en Córdoba, Colombia

open access: yesCaldasia, 2020
Investigaciones sobre toxicidad ambiental por pesticidas se han realizado principalmente en mamíferos terrestres, pero existe poca información sobre plaguicidas organoclorados en murciélagos. Teniendo en cuenta el papel funcional de este grupo
Javier Alfonso Racero-Casarrubia   +3 more
doaj   +1 more source

On some classes of BCH-algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The concept of a BCH-algebra is a generalization of the concept of a BCI-algebra. It is shown that weakly commutative BCH-algebras are weakly commutative BCI-algebras.
Muhammad Anwar Chaudhry   +1 more
doaj   +1 more source

A parallel Viterbi decoder for block cyclic and convolution codes [PDF]

open access: yes, 2005
We present a parallel version of Viterbi's decoding procedure, for which we are able to demonstrate that the resultant task graph has restricted complexity in that the number of communications to or from any processor cannot exceed 4 for BCH codes.
Amarasinghe, Kosala, Reeve, Jeffrey
core   +2 more sources

Pseudo-BCH Semilattices

open access: yesBulletin of the Section of Logic, 2018
In this paper we study pseudo-BCH algebras which are semilattices or lattices with respect to the natural relations ≤; we call them pseudo-BCH join-semilattices, pseudo-BCH meet-semilattices and pseudo-BCH lattices, respectively. We prove that the class of all pseudo-BCH join-semilattices is a variety and show that it is weakly regular, arithmetical at
openaire   +7 more sources

On spectra of BCH codes [PDF]

open access: yes, 1995
Derives an estimate for the error term in the binomial approximation of spectra of BCH codes. This estimate asymptotically improves on the bounds by Sidelnikov (1971), Kasami et al. (1985), and Sole (1990)
Krasikov, I, Litsyn, S
core   +3 more sources

A novel method to establish a rat ED model using internal iliac artery ligation combined with hyperlipidemia. [PDF]

open access: yesPLoS ONE, 2014
OBJECTIVE: To investigate a novel method, namely using bilateral internal iliac artery ligation combined with a high-fat diet (BCH), for establishing a rat model of erectile dysfunction (ED) that, compared to classical approaches, more closely mimics the
Chao Hu   +3 more
doaj   +1 more source

Construction and Decoding of BCH-Codes Over the Gaussian Field

open access: yesIEEE Access, 2023
In this article, first we deliberate the theory of the Gaussian field and extension field of the Gaussian field. Secondly, we provide a comprehensive construction scheme for BCH codes over the Gaussian field.
Muhammad Sajjad   +3 more
doaj   +1 more source

Long Nonbinary Codes Exceeding the Gilbert - Varshamov Bound for any Fixed Distance [PDF]

open access: yes, 2004
Let A(q,n,d) denote the maximum size of a q-ary code of length n and distance d. We study the minimum asymptotic redundancy \rho(q,n,d)=n-log_q A(q,n,d) as n grows while q and d are fixed.
Dumer, Ilya, Yekhanin, Sergey
core   +3 more sources

Some categorical aspects of BCH-algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We show that the category BCH of BCH-algebras and BCH-homomorphisms is complete. We also show that it has coequalizers, kernel pairs, and an image factorization system. It is also proved that onto homomorphisms and coequalizers, and monomorphisms and one-
Muhammad Anwar Chaudhry   +1 more
doaj   +1 more source

Theoretical performance comparison between reference-based coherent BPSK and BCH coded differential BPSK [PDF]

open access: yes, 1992
Both channel sounding and channel coding are well-known techniques for improving bit error rate (BER) performance of data transmission over a narrowband mobile radio channel.
Bateman, A, Li, M, McGeehan, JP
core   +2 more sources

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