Results 51 to 60 of about 2,193,515 (195)

Poincar\'e invariance and asymptotic flatness in Shape Dynamics [PDF]

open access: yes, 2013
Shape Dynamics is a theory of gravity that waives refoliation invariance in favor of spatial Weyl invariance. It is a canonical theory, constructed from a Hamiltonian, 3+1 perspective. One of the main deficits of Shape Dynamics is that its Hamiltonian is
Gomes, Henrique
core   +1 more source

Lobatto Shape Functions

open access: yes, 1993
The application of Lobatto shape functions to atomic and molecular quantum scattering calculations is reviewed, starting with the log derivative version of the Kohn variational principle. The variational basis and discrete variable versions of the theory are both discussed, and shown to be equivalent respectively to high order finite element and finite
openaire   +2 more sources

Experience Grammar: Creative Space Planning with Generative Graph and Shape for Early Design Stage

open access: yesBuildings, 2023
This paper presents a method to synthesise functional relationships and spatial configuration simultaneously using shape and graph computation from shape grammar and space syntax theories.
Rizal Muslimin
doaj   +1 more source

Iterative graph cuts for image segmentation with a nonlinear statistical shape prior

open access: yes, 2013
Shape-based regularization has proven to be a useful method for delineating objects within noisy images where one has prior knowledge of the shape of the targeted object.
A. O’Hagan   +36 more
core   +1 more source

The relationship between shape and size of diaspores depends on being seeds or fruits [PDF]

open access: yes, 2019
The relationship between the size and shape of diaspores was investigated in angiosperms and gymnosperms including determining if being a seed or fruit was a factor. Size was expressed as volume and shape as the departure from a perfect idealized sphere.
Dias, A.S., Dias, L.S.
core   +1 more source

Systematics of one-quasiparticle configurations in neutron-rich Sr, Zr, and Mo odd isotopes with the Gogny energy density functional [PDF]

open access: yes, 2010
The systematics of one-quasiparticle configurations in neutron-rich Sr, Zr, and Mo odd isotopes is studied within the Hartree-Fock-Bogoliubov plus Equal Filling Approximation method preserving both axial and time reversal symmetries.
Robledo, L. M.   +2 more
core   +2 more sources

Structural transitions in a NiTi alloy: a multistage loading-unload cycle

open access: yesFracture and Structural Integrity, 2013
NiTi shape memory alloys (SMAs) are increasingly used in many engineering and medical applications, because they combine special functional properties, such as shape memory effect and pseudoelasticity, with good mechanical strength and biocompatibility ...
V. Di Cocco, C. Maletta, S. Natali
doaj   +3 more sources

Biodegradable and Antimicrobial PLA–OLA Blends Containing Chitosan-Mediated Silver Nanoparticles with Shape Memory Properties for Potential Medical Applications

open access: yesNanomaterials, 2020
To use shape memory materials based on poly (lactic acid) (PLA) for medical applications is essential to tune their transition temperature (Ttrans) near to the human body temperature.
Agueda Sonseca   +8 more
doaj   +1 more source

Quantum Necking in Stressed Metallic Nanowires

open access: yes, 2003
When a macroscopic metallic wire is subject to tensile stress, it necks down smoothly as it elongates. We show that nanowires with radii comparable to the Fermi wavelength display remarkably different behavior.
A. J. Bernoff   +9 more
core   +1 more source

A practical density functional for polydisperse polymers

open access: yes, 2001
The Flory Huggins equation of state for monodisperse polymers can be turned into a density functional by adding a square gradient term, with a coefficient fixed by appeal to RPA (random phase approximation). We present instead a model nonlocal functional
  +8 more
core   +1 more source

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