Results 151 to 160 of about 99,371 (246)

The Harnack estimate for the Ricci flow

open access: yesJournal of Differential Geometry, 1993
The author proves the following theorem: Let \(g_{ij}\) be a complete solution with bounded curvature to the Ricci flow \({\partial g_{ij}\over \partial t}= -2 R_{ij}\) on a manifold \(M\) in some time interval \(0< t< T\) and suppose \(g_{ij}\) has a weakly positive curvature operator, so that \(R_{ijkl} U_{ij} U_{kl}\geq 0\) for every two-form \(U_ ...
openaire   +4 more sources

Designing Conservation Networks to Ensure Connectivity in a Changing Climate: Application to Spanish Forests

open access: yesDiversity and Distributions, Volume 31, Issue 9, September 2025.
ABSTRACT Aim Assess the potential effects of climate change on different forest habitats; and outline a climate‐wise conservation network to sustain forest connectivity under current and future climates. Location Mainland Spain. Time Period Current and future (2071–2100).
Teresa Goicolea   +6 more
wiley   +1 more source

Visualizing Ricci Flow of Manifolds of Revolution [PDF]

open access: green, 2005
J Rubinstein, Robert Sinclair
openalex   +1 more source

The Economic Consequences of Social Unrest: Evidence from Initial Public Offerings

open access: yesEuropean Financial Management, Volume 31, Issue 4, Page 1369-1397, September 2025.
ABSTRACT Prior research attributes negative stock market performance following episodes of social unrest to elevated uncertainty. However, social unrest does not solely increase uncertainty but separately acts to decrease investor sentiment. To determine which effect dominates, we study initial public offering (IPO) underpricing, which responds ...
Philip Barrett   +2 more
wiley   +1 more source

Sensitivity of inflow turbulence uncertainty on wind pressure on high‐rise buildings using large eddy simulations

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 22, Page 3430-3450, 9 September 2025.
Abstract Large eddy simulations (LES) can aid the prediction of wind loading on buildings, provided that representative inflow turbulence properties are prescribed. This study conducts LES to assess the sensitivity of the mean, root mean square (rms) fluctuation, and peak pressure coefficients (Cp) on building surfaces to the uncertainties in the ...
L. W. Chew   +3 more
wiley   +1 more source

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