Results 11 to 20 of about 2,728,736 (277)

Quasi-4-Connected Components [PDF]

open access: yesCoRR, 2016
We introduce a new decomposition of a graphs into quasi-4-connected components, where we call a graph quasi-4-connected if it is 3-connected and it only has separations of order 3 that separate a single vertex from the rest of the graph.
Grohe, Martin
core   +5 more sources

On the existence of a connected component of a graph [PDF]

open access: yesComputability, 2015
We study the reverse mathematics and computability of countable graph theory, obtaining the following results. The principle that every countable graph has a connected component is equivalent to $\mathsf{ACA}_0$ over $\mathsf{RCA}_0$.
Gura, Kirill   +2 more
core   +2 more sources

Object Delineation by κ-Connected Components [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
The notion of “strength of connectedness” between pixels has been successfully used in image segmentation. We present extensions to these works, which can considerably improve the efficiency of object delineation tasks.
Felipe P. G. Bergo   +3 more
doaj   +2 more sources

The Existence and Application of Unbounded Connected Components [PDF]

open access: yesJournal of Applied Mathematics, 2014
Let X be a Banach space and Cn a family of connected subsets of R×X. We prove the existence of unbounded components in superior limit of {Cn}, denoted by lim¯ Cn, which have prescribed shapes.
Hua Luo, Ruyun Ma
doaj   +4 more sources

The g-component connectivity of graphs

open access: yesTheoretical Computer Science, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
He Li   +3 more
openaire   +1 more source

Research on performance of proton exchange membrane fuel cell with an innovative flow field

open access: yesCase Studies in Thermal Engineering, 2023
The mass transfer enhanced cathode flow field with little pressure loss is a key factor to proton exchange membrane fuel cell (PEMFC) design. A new type of cathode flow field incorporating ship-shaped baffles which enhances mass transfer while causes ...
Yonghua Cai   +4 more
doaj   +1 more source

An improved potentiometric method for the measurement of entropy coefficient of lithium-ion battery based on positive adjustment

open access: yesEnergy Reports, 2022
The entropy coefficient (dUOC/dT) is an important parameter for predicting the heat generation of lithium-ion batteries (LiBs), especially under low-rate conditions. The potentiometric method is generally used to measure the entropy coefficient, which is
Zhenfeng Lin   +3 more
doaj   +1 more source

Numerical investigation on aerodynamic performance and stability of a sedan under wind–bridge–tunnel road condition

open access: yesAlexandria Engineering Journal, 2020
Given the complexity of the wind environment around bridge–tunnel sections in canyons, flow fields are complex and changeable, resulting in transient aerodynamic loads on vehicles.
Qianwen Zhang, Chuqi Su, Yiping Wang
doaj   +1 more source

Predictive cruise control for 4WD electric vehicle based on dynamic weight factors

open access: yesEnergy Reports, 2022
By computing the velocity trajectory based on the advancing road and traffic information, the predictive cruise control (PCC) system can significantly reduce vehicle energy consumption.
Dongmei Wu   +4 more
doaj   +1 more source

A review of machine learning state-of-charge and state-of-health estimation algorithms for lithium-ion batteries

open access: yesEnergy Reports, 2023
Vehicle electrification has been proven to be an efficient way to reduce carbon dioxide emissions and solve the energy crisis. Lithium-ion batteries (LiBs) are considered the dominant energy storage medium for electric vehicles (EVs) owing to their high ...
Zhong Ren, Changqing Du
doaj   +1 more source

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