Results 21 to 30 of about 23,957 (296)

Cutting rectangles in the plane

open access: yesDiscrete Mathematics, 1982
AbstractLet F be a planar family of pairwise disjoint translates of a parallelogram. It is shown that if every four members of F are intersected by some straight line, then there is a straight line which intersects all but at most two members of F. If it is instead assumed that every two members of F are intersected by some line that is parallel to one
Meir Katchalski, Ted Lewis 0001
openaire   +2 more sources

Crystal Orientation Effect on the Subsurface Deformation of Monocrystalline Germanium in Nanometric Cutting

open access: yesNanoscale Research Letters, 2017
Molecular dynamics simulations of nanometric cutting on monocrystalline germanium are conducted to investigate the subsurface deformation during and after nanometric cutting.
Min Lai, Xiaodong Zhang, Fengzhou Fang
doaj   +1 more source

Projective Cutting-Planes

open access: yesSIAM Journal on Optimization, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Depth lower bounds in Stabbing Planes for combinatorial principles [PDF]

open access: yesLogical Methods in Computer Science
Stabbing Planes (also known as Branch and Cut) is a proof system introduced very recently which, informally speaking, extends the DPLL method by branching on integer linear inequalities instead of single variables.
Stefan Dantchev   +3 more
doaj   +1 more source

Local and global lifted cover inequalities for the 0-1 multidimensional knapsack problem [PDF]

open access: yes, 2007
The 0-1 Multidimensional Knapsack Problem (0-1 MKP) is a well- known (and strongly N P -hard) combinatorial optimization problem with many applications.
Kaparis, Konstantinos   +2 more
core   +1 more source

An alternating linearization bundle method for a class of nonconvex nonsmooth optimization problems

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we propose an alternating linearization bundle method for minimizing the sum of a nonconvex function and a convex function, both of which are not necessarily differentiable. The nonconvex function is first locally “convexified” by imposing
Chunming Tang, Jinman Lv, Jinbao Jian
doaj   +1 more source

MODELING OF ROUGH ROTARY MILLING OF CRANKSHAFT PINS [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2023
The development of the modern automotive industry requires a quick adaptation of new production methods. This is possible thanks to software capable of simulating manufacturing processes.
Kacper CIEŚLAR, Stanisław PŁONKA
doaj   +1 more source

Cutting a Bunch of Grapes by a Plane

open access: yesEuropean Journal of Combinatorics, 2001
Let \({\mathcal B}_n\) be a family of \(n\) disjoint balls in \(d\)-dimensional euclidean space \(\mathbb{R}^d\). If \(d=2\) the term disk is used in place of ball. The max-min ratio of \({\mathcal B}_n\) is the ratio \(\lambda\) of the maximum radius divided by the minimum radius among the balls of \({\mathcal B}_n\). The authors prove two interesting
Hiroshi Maehara, Ai Oshiro
openaire   +1 more source

Understanding Cutting Planes for QBFs [PDF]

open access: yes, 2016
We define a cutting planes system CP+8red for quantified Boolean formulas (QBF) and analyse the proof-theoretic strength of this new calculus. While in the propositional case, Cutting Planes is of intermediate strength between resolution and Frege, our ...
Chew, Leroy   +7 more
core   +1 more source

A Static Voltage Security Region for Centralized Wind Power Integration—Part I: Concept and Method

open access: yesEnergies, 2014
When large wind farms are centrally integrated in a power grid, cascading tripping faults induced by voltage issues are becoming a great challenge. This paper therefore proposes a concept of static voltage security region to guarantee that the voltage ...
Tao Ding   +4 more
doaj   +1 more source

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