Results 71 to 80 of about 868 (161)

Covalent Organic Framework Electrolytes for Solid‐State Lithium Batteries: Designing Ion Highways for Next‐Generation Energy Storage

open access: yesSmall, Volume 22, Issue 55, 1 October 2026.
Covalent organic frameworks provide a structurally programmable platform for solid‐state lithium batteries. This review outlines a design framework linking structural descriptors to ion‐transport metrics. It examines mechanisms of confinement, channel architecture, and hybrid designs, addressing the reasons for the occasional failure of high intrinsic ...
Rajesh Dhanushkotti   +7 more
wiley   +1 more source

From Surface to Depth: SWOT Altimetry and Glider Observations of a Cuddy in the Northeast Pacific

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 10, October 2026.
Abstract California Undercurrent Eddies (Cuddies) transport heat, salt, and biogeochemical properties from coastal regions to the open Northeast Pacific, but their three‐dimensional structure, lateral exchange mechanisms and complete life‐cycle are still not fully understood.
Giuliana Berden   +4 more
wiley   +1 more source

Efficient Helicopter-Satellite Communication Scheme Based on Check-Hybrid LDPC Coding

open access: yesTsinghua Science and Technology, 2018
When implementing helicopter-satellite communications, periodical interruption of the received signal is a challenging problem because the communication antenna is intermittently blocked by the rotating blades of the helicopter.
Ping Wang, Liuguo Yin, Jianhua Lu
doaj   +1 more source

Construction Method of QC-LDPC Codes with Big Girth for Fast Encoding [PDF]

open access: yesJisuanji gongcheng, 2018
The sub-matrices on both diagonals of the right half of the check matrix are unit matrices.Existence of the deterministic unit matrix not only destroys the randomness of Quasie Cyclic-Low Density Parity Check(QC-LDPC) code,it leads to a certain loss of ...
PENG Haiying,YANG Jian,SUN Lijun
doaj  

QC-MDPC-McEliece: A public-key code-based encryption scheme based on quasi-cyclic moderate density parity check codes

open access: yes, 2014
The McEliece cryptosystem is the oldest code-based cryptosystem and itis believed to resist to quantum attacks. The system was proposed in1978 by Robert McEliece. It uses irreducible binary Goppa codes, butit can be instantiated with any family of linear codes for which anefficient decoder is available.
openaire   +1 more source

QC-LDPC Codes Construction by Concatenating of Circulant Matrices as Block-Columns

open access: yesInternational Journal of Information and Communication Technology Research, 2016
In this paper a new low complexity method for constructing binary quasi-cyclic low-density parity-check (QC-LDPC) codes is introduced. In the proposed method, each block-column of the parity check matrix H is made by a circulant matrix in a way that the ...
Mohammad Hesam Tadayon   +1 more
doaj  

On Quasi-Cyclic Codes of Index 3. [PDF]

open access: yesEntropy (Basel)
Abdukhalikov K, Shat RM.
europepmc   +1 more source

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