Results 41 to 50 of about 2,193,515 (195)

Sensory-motor cortices shape functional connectivity dynamics in the human brain

open access: yesNature Communications, 2021
Spontaneous fluctuations in brain activity exhibit complex spatiotemporal patterns across animal species. Here the authors show that sensory-motor regions and spatial heterogeneity in excitation-inhibition balance might shape multi-stability in brain ...
Xiaolu Kong   +10 more
doaj   +1 more source

NiTi shape-memory transformations: minimum-energy pathways between austenite, martensites, and kinetically-limited intermediate states [PDF]

open access: yes, 2014
NiTi is the most used shape-memory alloy, nonetheless, a lack of understanding remains regarding the associated structures and transitions, including their barriers.
Johnson, Duane   +3 more
core   +4 more sources

Objects seen as scenes: Neural circuitry for attending whole or parts

open access: yesNeuroImage, 2020
Depending on our goals, we pay attention to the global shape of an object or to the local shape of its parts, since it’s difficult to do both at once. This typically effortless process can be impaired in disease.
Mitchell Valdés-Sosa   +9 more
doaj   +1 more source

A Variational Stereo Method for the Three-Dimensional Reconstruction of Ocean Waves [PDF]

open access: yes, 2011
We develop a novel remote sensing technique for the observation of waves on the ocean surface. Our method infers the 3-D waveform and radiance of oceanic sea states via a variational stereo imagery formulation.
Benetazzo, Alvise   +3 more
core   +3 more sources

A PDE Method to Segment Image Linear Objects with Application to Lens Distortion Removal

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2007
In this paper, we propose a partial differential equation based method to segment image objects, which have a given parametric shape based on energy functional.
Moumen T. El-Melegy, Nagi H. Al-Ashwal
doaj   +1 more source

Shape optimization of preform design for minimizing plastic work of forging process

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this study, we present a parameter-free shape optimization method for preform design in forging process. The objective functional is the total plastic work of forging process.
Masahiro KITAGAWA   +2 more
doaj   +1 more source

Simultaneous evolutionary expansion and constraint of genomic heterogeneity in multifocal lung cancer. [PDF]

open access: yes, 2017
Recent genomic analyses have revealed substantial tumor heterogeneity across various cancers. However, it remains unclear whether and how genomic heterogeneity is constrained during tumor evolution.
Bivona, Trever G   +16 more
core   +2 more sources

Microstructure, mechanical performance and nucleation mechanism of laser powder bed fused novel Sc/Zr/Ti-modified Al-Mg alloys

open access: yesMaterials & Design
In this study, the modification of 0.70 wt% ScH3 alone did not substantially fine the grain and eliminate the hot-cracking of Al-Mg-Sc alloy, resulting in low strength of as-built material.
Xiang Li   +3 more
doaj   +1 more source

Simulating the nanomechanical response of cyclooctatetraene molecules on a graphene device [PDF]

open access: yes, 2018
We investigate the atomic and electronic structures of cyclooctatetraene (COT) molecules on graphene and analyze their dependence on external gate voltage using first-principles calculations.
Cohen, Marvin L.   +2 more
core   +3 more sources

SEDFMNet: A Simple and Efficient Unsupervised Functional Map for Shape Correspondence Based on Deconstruction

open access: yesGraphical Models
In recent years, deep functional maps (DFM) have emerged as a leading learning-based framework for non-rigid shape-matching problems, offering diverse network architectures for this domain.
Haojun Xu   +5 more
doaj   +1 more source

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