Results 31 to 40 of about 1,208,588 (320)

Discrete Quadratic-Phase Fourier Transform: Theory and Convolution Structures

Entropy, 2022
The discrete Fourier transform is considered as one of the most powerful tools in digital signal processing, which enable us to find the spectrum of finite-duration signals.
Hari M. Srivastava, Waseem Z. Lone, Firdous A. Shah, Ahmed I. Zayed   +3 more
doaj   +1 more source

Compatibility conditions for discrete planar structures

International Journal of Solids and Structures, 2020
Compatibility conditions are investigated for planar network structures consisting of nodes and connecting bars; these conditions restrict the elongations of bars and are analogous to the compatibility conditions of deformation in continuum mechanics. The requirement that the deformations remain planar imposes compatibility.
Andrejs Treibergs, Andrej Cherkaev, Predrag Krtolica   +2 more
openaire   +3 more sources

Structural matching by discrete relaxation [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 1997
This paper describes a Bayesian framework for performing relational graph matching by discrete relaxation. Our basic aim is to draw on this framework to provide a comparative evaluation of a number of contrasting approaches to relational matching. Broadly speaking there are two main aspects to this study. Firstly we locus on the issue of how relational
Wilson, R C, Hancock, E R
openaire   +3 more sources

Coherent Dynamics of Quantum Systems with Non-Uniform Fourier Space Excited by Laser Radiation

Zanco Journal of Pure and Applied Sciences, 2022
The algorithm is presented to solve dynamical equations for excitation of molecular models with multiple energy levels. It uses only discrete structures: discrete orthogonal polynomials constructed specially in Fourier space of the probability amplitudes,
Sary Banjak , Vadim Savva
doaj   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Continuous Optimization of Adaptive Quadtree Structures

, 2018
We present a novel continuous optimization method to the discrete problem of quadtree optimization. The optimization aims at achieving a quadtree structure with the highest mechanical stiffness, where the edges in the quadtree are interpreted as ...
Wu, Jun
core   +1 more source

Decrypting cancer's spatial code: from single cells to tissue niches

Molecular Oncology, EarlyView.
Spatial transcriptomics maps gene activity across tissues, offering powerful insights into how cancer cells are organised, switch states and interact with their surroundings. This review outlines emerging computational, artificial intelligence (AI) and geospatial approaches to define cell states, uncover tumour niches and integrate spatial data with ...
Cenk Celik, Shi Pan, Eloise Withnell, Hou Wang Lam, Maria Secrier   +4 more
wiley   +1 more source

Short‐term actions of epigalocatechin‐3‐gallate in the liver: a mechanistic insight into hypoglycemic and potential toxic effects

FEBS Open Bio, EarlyView.
Epigallocatechin‐3‐gallate (EGCG) acutely inhibited gluconeogenesis and enhanced glycolysis, glycogenolysis, and fatty acid oxidation in perfused rat livers. Mechanistic assays revealed mitochondrial uncoupling, inhibition of pyruvate carboxylation and glucose‐6‐phosphatase, shift of NADH/NAD+ ratios toward oxidation, and loss of membrane integrity ...
Carla Indianara Bonetti, Bruna Lopes Correia, Francielle Cristina Nakamura Manicardi, Nairana Mithieli de Queiroz Eskuarek Melo, Vanesa de Oliveira Pateis, Jurandir Fernando Comar, Anacharis Babeto de Sá‐Nakanishi, Adelar Bracht, Lívia Bracht   +8 more
wiley   +1 more source

Discrete Convex Functions on Graphs and Their Algorithmic Applications

, 2017
The present article is an exposition of a theory of discrete convex functions on certain graph structures, developed by the author in recent years.
A Bernáth, A Frank, AV Goldberg, AV Karzanov, AV Karzanov, AV Karzanov, AWJ Kolen, BC Tansel, E Anshelevich, F Kuivinen, G Grätzer, H Hirai, H Hirai, H Hirai, H Hirai, H-J Bandelt, J Kleinberg, K Murota, K Murota, K Murota, MA Babenko, MR Bridson, N Garg, P Abramenko, P Favati, R Hassin, S Fujishige, S Fujishige, S Fujishige, S Fujishige, S Fujishige, S Živný, T Fukunaga, V Chepoi, V Kolmogorov, VV Vazirani, Y Iwata   +36 more
core   +1 more source

Association of the ICH Score With Withdrawal of Life‐Sustaining Treatment Over a 10‐Year Period

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The intracerebral hemorrhage (ICH) score was developed to enhance provider communication and facilitate early severity assessment. We examined the association of the ICH score with mortality and withdrawal of life‐sustaining treatment (WLST) in a large, multicenter stroke registry, and evaluated temporal trends in these associations.
Nina Massad, Lili Zhou, Brian Manolovitz, Negar Asdaghi, Hannah Gardener, Hao Ying, Carolina M. Gutierrez, Angus Jameson, David Rose, Mohan Kottapally, Amedeo Merenda, Kristine O'Phelan, Sebastian Koch, Jose G. Romano, Tatjana Rundek, Ayham Alkhachroum   +15 more
wiley   +1 more source