Results 11 to 20 of about 399,123 (289)

An efficient planar incremental convex hull algorithm to find the edges of the boundary polygon of the convex hull of a set of points

open access: yesCeylon Journal of Science, 2021
The definition of the convex hull of a set of points is the smallest convex set containing all the points. Many algorithms have been proposed with the worst case time complexity is equal to O (n log n).
K. R. Wijeweera, S. R. Kodituwakku
doaj   +1 more source

Estimating 3D Green Volume and Aboveground Biomass of Urban Forest Trees by UAV-Lidar

open access: yesRemote Sensing, 2022
Three dimensional (3D) green volume is an important tree factor used in forest surveys as a prerequisite for estimating aboveground biomass (AGB). In this study, we developed a method for accurately calculating the 3D green volume of single trees from ...
Lv Zhou   +7 more
doaj   +1 more source

The convex hull swampland distance conjecture and bounds on non-geodesics [PDF]

open access: yesJournal of High Energy Physics, 2020
The Swampland Distance Conjecture (SDC) restricts the geodesic distances that scalars can traverse in effective field theories as they approach points at infinite distance in moduli space.
J. Calderón-Infante   +2 more
semanticscholar   +1 more source

AN EFFICIENT ALGORITHM FOR THE CONVEX HULL OF PLANAR SCATTERED POINT SET [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Computing the convex hull of a point set is requirement in the GIS applications. This paper studies on the problem of minimum convex hull and presents an improved algorithm for the minimum convex hull of planar scattered point set.
Z. Fu, Y. Lu
doaj   +1 more source

EDEM Investigation and Experimental Evaluation of Abrasive Wear Resistance Performance of Bionic Micro-Thorn and Convex Hull Geometrically Coupled Structured Surface

open access: yesApplied Sciences, 2021
Procambarus clarkii was found to have excellent anti-wear performance against abrasive materials. To improve the wear resistance performance of the soil-engaging component of agricultural machinery, in this study, the micro-thorn and convex hull coupled ...
Qingzhu Zhang   +4 more
doaj   +1 more source

Generalized Convex Hull Pricing for the AC Optimal Power Flow Problem

open access: yesIEEE Transactions on Control of Network Systems, 2020
We study an abstract myopic electricity market subject to general nonconvex power flow models and convex generator models (without discrete commitment variables) in a setting where there may be no market equilibrium that guarantees revenue adequacy of ...
Manuel V. P. Garcia   +2 more
semanticscholar   +1 more source

Micro Water–Energy Nexus: Optimal Demand-Side Management and Quasi-Convex Hull Relaxation [PDF]

open access: yesIEEE Transactions on Control of Network Systems, 2018
In some countries and regions, water distribution and treatment consume a considerable amount of electric energy. This paper investigates the water network's potential ability to provide demand response services to the power grid for the management of ...
Qifeng Li   +3 more
semanticscholar   +1 more source

Randomized Incremental Convex Hull is Highly Parallel

open access: yesACM Symposium on Parallelism in Algorithms and Architectures, 2020
The randomized incremental convex hull algorithm is one of the most practical and important geometric algorithms in the literature. Due to its simplicity, and the fact that many points or facets can be added independently, it is also widely used in ...
G. Blelloch   +3 more
semanticscholar   +1 more source

The convex hull of the run-and-tumble particle in a plane [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2019
We study the statistical properties of the convex hull of a planar run-and-tumble particle (RTP), also known as the ‘persistent random walk’, where the particle/walker runs ballistically between tumble events at which it changes its direction randomly ...
A. Hartmann   +3 more
semanticscholar   +1 more source

Generalized convex hull construction for materials discovery [PDF]

open access: yesPHYSICAL REVIEW MATERIALS, 2018
High-throughput computational materials searches generate large databases of locally-stable structures. Conventionally, the needle-in-a-haystack search for the few experimentally-synthesizable compounds is performed using a convex hull construction ...
A. Anelli   +3 more
semanticscholar   +1 more source

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