Results 61 to 70 of about 4,303,118 (363)
Advanced Engineering Materials, EarlyView.Feasibility of improving the mechanical and shape‐memory properties of a CoCrFeMn high‐entropy alloy through carbon addition is investigated. The recovery strain of the carbon‐containing alloy is approximately four to five times higher than that of the carbon‐free alloy.
Minsu Park +4 more
wiley +1 more source
A Practical Algorithm with Performance Guarantees for the Art Gallery Problem [PDF]
Discrete Mathematics & Theoretical Computer ScienceGiven a closed simple polygon $P$, we say two points $p,q$ see each other if the segment $pq$ is fully contained in $P$. The art gallery problem seeks a minimum size set $G\subset P$ of guards that sees $P$ completely.
Simon Hengeveld, Tillmann Miltzow
doaj +1 more source
Diffuse Reflection Radius in a Simple Polygon [PDF]
Algorithmica, 2014 It is shown that every simple polygon in general position with $n$ walls can be illuminated from a single point light source $s$ after at most $\lfloor (n-2)/4\rfloor$ diffuse reflections, and this bound is the best possible. A point $s$ with this property can be computed in $O(n\log n)$ time.
Fox-Epstein, Eli +2 more
openaire +4 more sources
Active Thermal Field Integration for Marangoni‐Driven Salt Rejection and Water Collection
Advanced Functional Materials, EarlyView.A thermal gradient fabric (TGF) evaporator with an auxiliary active thermal field can simultaneously increase evaporation rates and achieve long‐term salt rejection. The auxiliary active thermal field is well integrated with solar energy to construct moderate, extensive, and circulating Marangoni flow for salt rejection.
Can Ge +12 more
wiley +1 more source
Positive geometry, local triangulations, and the dual of the Amplituhedron
Journal of High Energy Physics, 2021 We initiate the systematic study of local positive spaces which arise in the context of the Amplituhedron construction for scattering amplitudes in planar maximally supersymmetric Yang-Mills theory. We show that all local positive spaces relevant for one-
Enrico Herrmann +3 more
doaj +1 more source
A simple proof for visibility paths in simple polygons
, 2020 The purpose of this note is to give a simple proof for a necessary and sufficient condition for visibility paths in simple polygons. A visibility path is a curve such that every point inside a simple polygon is visible from at least one point on the path.
Charkari, Nasrollah Moghaddam +1 more
core
Locked and Unlocked Polygonal Chains in 3D [PDF]
, 1998 In this paper, we study movements of simple polygonal chains in 3D. We say that an open, simple polygonal chain can be straightened if it can be continuously reconfigured to a straight sequence of segments in such a manner that both the length of each ...
Biedl, T. +10 more
core +8 more sources
Advanced Functional Materials, EarlyView.Shellular materials form spontaneously by dip coating the primitive triply periodic minimal surface (TPMS) wireframe in an aqueous solution of lyotropic liquid crystalline graphene oxide (GO) nanosheets mixed with polymers. Regulated by surface tension, GO nanosheets align on the polymer soap film as the stress builds up during drying.
Yinding Chi +9 more
wiley +1 more source
Discrete Mathematics & Theoretical Computer Science, 2008 Severini and Mansour introduced $\textit{square polygons}$, as graphical representations of $\textit{square permutations}$, that is, permutations such that all entries are records (left or right, minimum or maximum), and they obtained a nice formula for ...
Enrica Duchi, Dominique Poulalhon
doaj +1 more source
Precursor Mineral Phases of Forming Mollusk Shell Nacre: A Study of Hydrated Samples
Advanced Functional Materials, EarlyView.Mineral, organic phase, and water are the essential components in mollusk shell nacre formation. Their interplay is not well understood, because the hydrated material is difficult to observe at high resolution, under close to native conditions. Forming nacre is studied using environmental and cryo‐electron microscopy and hydrated ACC phases, together ...
Anna Kozell +4 more
wiley +1 more source