Results 41 to 50 of about 1,077,898 (187)

Some functionals on compact manifolds with boundary

open access: yes, 2016
We analyze critical points of two functionals of Riemannian metrics on compact manifolds with boundary. These functionals are motivated by formulae of the mass functionals of asymptotically flat and asymptotically hyperbolic ...
Miao, Pengzi, Tam, Luen-Fai
core   +1 more source

Critical associated metrics on contact manifolds [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1984
AbstractDefining a function on the set of all Riemannian metrics associated to a contact form on a compact manifold by taking the integral of the Ricci curvature in the direction of the characteristic vector field, it is shown that on a compact regular contact manifold the only critical points of this function are the metrics for which the ...
openaire   +2 more sources

Joint Geometry and Color Projection-Based Point Cloud Quality Metric

open access: yesIEEE Access, 2022
Point cloud coding solutions have been recently standardized to address the needs of multiple application scenarios. The design and assessment of point cloud coding methods require reliable objective quality metrics to evaluate the level of degradation ...
Alireza Javaheri   +3 more
doaj   +1 more source

Curvature homogeneous critical metrics in dimension three

open access: yesJournal of Mathematical Analysis and Applications, 2022
[Abstract] We study curvature homogeneous three-manifolds modeled on a symmetric space which are critical for some quadratic curvature functional. If the Ricci operator is diagonalizable, critical metrics are 1-curvature homogeneous Brinkmann waves and are critical for one specific functional.
M. Brozos-Vázquez   +2 more
openaire   +3 more sources

About J-flow, J-balanced metrics, uniform J-stability and K-stability

open access: yes, 2017
From the work of Dervan-Keller, there exists a quantization of the critical equation for the J-flow. This leads to the notion of J-balanced metrics. We prove that the existence of J-balanced metrics has a purely algebro-geometric characterization in ...
Hashimoto, Yoshinori, Keller, Julien
core   +3 more sources

Lithium-Sulfur Batteries: Attaining the Critical Metrics [PDF]

open access: yesJoule, 2020
Amruth Bhargav is a PhD student in the Materials Science and Engineering graduate program at the University of Texas at Austin. He obtained his B.E. in Mechanical Engineering from Visvesvaraya Technological University, India, in 2013 and a Master of Science in Mechanical Engineering from Indiana University-Purdue University Indianapolis in 2016.
Amruth Bhargav   +3 more
openaire   +1 more source

New Approaches in Dynamic Metrics for Lighting Control Systems: A Critical Review

open access: yesApplied Sciences
The growing number of daylighting metrics—often overlapping in scope or terminology—combined with the need for prior familiarization to interpret and apply them effectively, has created a barrier to their adoption beyond academic settings.
Guillermo García-Martín   +3 more
doaj   +1 more source

Influence of working capital metrics on profitability: a critical examination on Indian manufacturing sector

open access: yesKelaniya Journal of Management, 2016
The disbursement of working capital is usually considered as a short term cash flow and it is totally neglected by the policy makers to tag with profitability of a concern.
M. Aravind
doaj   +1 more source

Universality of scholarly impact metrics

open access: yes, 2013
Given the growing use of impact metrics in the evaluation of scholars, journals, academic institutions, and even countries, there is a critical need for means to compare scientific impact across disciplinary boundaries.
Kaur, Jasleen   +2 more
core   +1 more source

Certain Paracontact Metrics Satisfying the Critical Point Equation

open access: yesCommunications in Mathematics, 2023
The aim of this paper is to study theCPE (Critical Point Equation) on some paracontact metric manifolds.First, we prove that if a para-Sasakian metric satisfies the CPE,then it is Einstein with constant scalar curvature -2n(2n+1). Next,we prove that if $(\kappa,\mu)$-paracontact metric satisfies theCPE, then it is locally isometric to the product of a ...
openaire   +3 more sources

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