Results 181 to 190 of about 542,162 (354)

Time-space optimal convex Hull algorithms [PDF]

, 1993
Hla Min, S. Q. Zheng
openalex   +1 more source

Reproducibility of tailored and universal nonselective excitation pulses at 7 T for human cardiac MRI: A 3‐year and an interday study

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose Ultrahigh‐field (UHF; ≥7 T) MRI is challenging due to spatially heterogeneous B1+ profiles. This longitudinal study evaluates the reproducibility of three parallel‐transmission excitation strategies to enable UHF cardiac MRI: vendor‐supplied radiofrequency (RF) shim, subject‐tailored kT‐points pulses (TPs), and universal kT‐points ...
Manuel Fernando Sánchez Alarcón, Sebastian Dietrich‐Conzelmann, Jean Pierre Bassenge, Jeanette Schulz‐Menger, Sebastian Schmitter, Christoph Stefan Aigner   +5 more
wiley   +1 more source

A theorem on convex hulls

, 1969
W. A. Horn
openalex   +1 more source

Solving Large‐Scale Weapon Target Assignment Problems in Seconds Using Branch‐Price‐And‐Cut

Naval Research Logistics (NRL), EarlyView.
ABSTRACT This paper proposes a framework based on branch‐price‐and‐cut to solve the weapon target assignment (WTA) problem, a popular class of non‐linear assignment problems that has received significant attention over the past several decades. We first reformulate the WTA into a form amenable to column generation and then derive efficient algorithms ...
Dimitris Bertsimas, Alex Paskov
wiley   +1 more source

High extinction risk of the endemic tree flora in a hyper‐diverse region of the Amazon

PLANTS, PEOPLE, PLANET, EarlyView.
The rapid global loss of biodiversity, especially in the Neotropics, underscores the need to understand how deforestation impacts endemic plant species' extinction risk and conservation status. Due to limited ranges and habitat specialization, endemics are particularly Vulnerable.
Juan Ernesto Guevara‐Andino, Daniel Navas‐Muñoz, María‐José Endara   +2 more
wiley   +1 more source

ROLLING BEARING FAULT DIAGNOSIS BASED ON ADAPTIVE FEATURE SELECTION k-SUB CONVEX HULL

Jixie qiangdu
Feature selection and classifier design are often studied separately in rolling bearing fault diagnosis, so it is difficult to obtain satisfactory classification accuracy.
HU AiRu, WU ZhanTao, YANG Yu, CHENG JunSheng   +3 more
doaj  

Convex hulls, occluding contours, aspect graphs and the Hough transform [PDF]

, 1996
Martyn Wright, Andrew Fitzgibbon, P. J. Giblin, Robert B. Fisher   +3 more
openalex   +1 more source

Plant species diversity and abundance of functional groups influence net nitrogen mineralization along productivity gradients in montane Calluna‐dominated heathlands

PLANTS, PEOPLE, PLANET, EarlyView.
Heathlands are globally important ecosystems that provide key functions and services but are increasingly threatened by land use changes. We investigated how plant diversity and productivity influence nitrogen cycling under different management regimes.
José Manuel Fernández‐Guisuraga, Leonor Calvo, Elena Marcos   +2 more
wiley   +1 more source

Optimal output-sensitive convex hull algorithms in two and three dimensions [PDF]

, 1996
Timothy M. Chan
openalex   +1 more source

Toward Useful Quantum Kernels

Advanced Quantum Technologies, EarlyView.
The hybrid approach to Quantum Supervised Machine Learning is compatible with Noisy Intermediate Scale Quantum (NISQ) devices but hardly useful. Pure quantum kernels requiring fault‐tolerant quantum computers are more promising. Examples are kernels computed by means of the Quantum Fourier Transform (QFT) and kernels defined via the calculation of ...
Massimiliano Incudini, Francesco Martini, Alessandra Di Pierro   +2 more
wiley   +1 more source