Results 91 to 100 of about 132,978 (290)

Entropy of Closure Operators and Network Coding Solvability

open access: yesEntropy, 2014
The entropy of a closure operator has been recently proposed for the study of network coding and secret sharing. In this paper, we study closure operators in relation to their entropy. We first introduce four different kinds of rank functions for a given
Maximilien Gadouleau
doaj   +1 more source

Proteasomal degradation of intracellularly expressed Amblyomin‐X limits suicide gene therapy potential in melanoma cells

open access: yesFEBS Open Bio, EarlyView.
This study explores the feasibility of expressing the antitumoral protein Amblyomin‐X through a suicide gene therapy approach and investigates its intracellular fate after gene delivery. Although the gene is efficiently expressed, melanoma cells rapidly degrade the Amblyomin‐X protein via proteasome activity.
Victor Dal Posolo Cinel   +4 more
wiley   +1 more source

HENCE: Hardware End-to-End Neural Conditional Entropy Encoder for Lossless 3D Medical Image Compression

open access: yesIEEE Access
Recently, learning-based lossless compression methods for volumetric medical images have attracted much attention. They can achieve higher compression ratios than traditional methods, albeit at the cost of slower compression speed.
Jietao Chen   +5 more
doaj   +1 more source

Improved entropy encoding for high efficient video coding standard

open access: yesAlexandria Engineering Journal, 2018
The High Efficiency Video Coding (HEVC) has better coding efficiency, but the encoding performance has to be improved to meet the growing multimedia applications.
B.S. Sunil Kumar   +2 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Joint Source-Channel Polarization With Side Information

open access: yesIEEE Access, 2018
As an extension of source polarization and channel polarization, this paper considers joint source-channel polarization, which results in a joint source-channel coding (JSCC) scheme using a quasiuniform systematic polar code (SPC).
Liqiang Jin, Hongwen Yang
doaj   +1 more source

"Graph Entropy, Network Coding and Guessing games" [PDF]

open access: yes, 2007
We introduce the (private) entropy of a directed graph (in a new network coding sense) as well as a number of related concepts. We show that the entropy of a directed graph is identical to its guessing number and can be bounded from below with the number
RIIS, SM
core   +3 more sources

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

open access: yesFEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik   +6 more
wiley   +1 more source

High Efficiency Video Coding Compliant Perceptual Video Coding Using Entropy Based Visual Saliency Model

open access: yesEntropy, 2019
In past years, several visual saliency algorithms have been proposed to extract salient regions from multimedia content in view of practical applications.
Muhammad Zeeshan, Muhammad Majid
doaj   +1 more source

Quantization as histogram segmentation: globally optimal scalar quantizer design in network systems [PDF]

open access: yes, 2002
We propose a polynomial-time algorithm for optimal scalar quantizer design on discrete-alphabet sources. Special cases of the proposed approach yield optimal design algorithms for fixed-rate and entropy-constrained scalar quantizers, multi-resolution ...
Effros, Michelle, Muresan, Dan
core  

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