Results 161 to 170 of about 642,101 (319)

Networklike metric spaces

open access: yesDiscrete Mathematics, 1988
AbstractTwo distinctive and fundamental metrical properties of a network (conceived as an infinite point set with a metric) are: (a) it is a tree if and only if its metric is convex, and (b) it decomposes into finitely many treelike segments on which the metric is convex.
openaire   +2 more sources

Integral Operators in b-Metric and Generalized b-Metric Spaces and Boundary Value Problems

open access: yesFractal and Fractional
We study fixed-point theorems of contractive mappings in b-metric space, cone b-metric space, and the newly introduced extended b-metric space. To generalize an existence and uniqueness result for the so-called Φs functions in the b-metric space to the ...
Christopher Middlebrook, Wenying Feng
doaj   +1 more source

Enhanced dose prediction for head and neck cancer artificial intelligence‐driven radiotherapy based on transfer learning with limited training data

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Training deep learning dose prediction models for the latest cutting‐edge radiotherapy techniques, such as AI‐based nodal radiotherapy (AINRT) and Daily Adaptive AI‐based nodal radiotherapy (DA‐AINRT), is challenging due to limited data.
Hui‐Ju Wang   +5 more
wiley   +1 more source

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