Results 1 to 10 of about 65,559 (161)
A polyhedral approach for the equitable coloring problem [PDF]
Discrete Applied Mathematics, 2014 In this work we study the polytope associated with a 0,1-integer programming formulation for the Equitable Coloring Problem. We find several families of valid inequalities and derive sufficient conditions in order to be facet-defining inequalities. We also present computational evidence that shows the efficacy of these inequalities used in a cutting ...
Méndez-Díaz, Isabel +2 more
openaire +5 more sources
DEM calibration insights on the role of particle shape for sub 2 mm particles [PDF]
Scientific ReportsThis study introduces a comprehensive calibration technique for discrete element method (DEM) simulations. Its focus is on particles smaller than 2 mm and this showcase shows comparison between spherical and polyhedral particle shape calibration.
Jan Diviš +7 more
doaj +2 more sources
A polyhedral approach to computing border bases [PDF]
, 2009 Border bases can be considered to be the natural extension of Gr bner bases that have several advantages. Unfortunately, to date the classical border basis algorithm relies on (degree-compatible) term orderings and implicitly on reduced Gr bner bases.
Braun, G��bor, Pokutta, Sebastian
core +4 more sources
Modification of Octavinyl POSS and Its Effect on the Mechanical Properties and Thermal Stability of Silicone Rubber/POSS Composites [PDF]
NanomaterialsOctavinyl polyhedral oligomeric silsesquioxane (POSS) can be used to improve the thermal stability of silicone rubber (SR). However, POSS nanoparticles tend to agglomerate in SR matrix, negatively affecting the reinforcement role of POSS for SR, and ...
Junjie Peng, Yong Zhang
doaj +2 more sources
Adaptive data driven multi period power supply recovery method for distribution networks [PDF]
Scientific ReportsIn the process of distribution network fault recovery, in order to better address the issues caused by the uncertainty of new energy power output, this paper proposes a multi period power supply recovery method for distribution networks based on adaptive
Xi Ye +4 more
doaj +2 more sources
Polyhedral complementarity problem with quasimonotone decreasing mappings [PDF]
Yugoslav Journal of Operations Research, 2023 The fixed point problem of piecewise constant mappings in Rn is investigated. This is a polyhedral complementarity problem, which is a generalization of the linear complementarity problem.
Shmyrev Vadim I.
doaj +1 more source
A polyhedral approach to bisubmodular function minimization [PDF]
Operations Research Letters, 2021 We consider minimization problems with bisubmodular objective functions. We propose valid inequalities, namely the poly-bimatroid inequalities, and provide a complete linear description of the convex hull of the epigraph of a bisubmodular function. Furthermore, we develop a cutting plane algorithm for constrained bisubmodular minimization based on the ...
Qimeng Yu, Simge Küçükyavuz
openaire +2 more sources
CFD-DEM Simulation of Fluidization of Polyhedral Particles in a Fluidized Bed
Energies, 2021 Fluidization of non-spherical particles is a common process in energy industries and chemical engineering. Understanding the fluidization of non-spherical particles is important to guide relevant processes.
Zihan Liu, Huaqing Ma, Yongzhi Zhao
doaj +1 more source
AUTOMATIC 3D RECONSTRUCTION OF COMPLEX BUILDINGS FROM INCOMPLETE POINT CLOUDS WITH TOPOLOGICAL-RELATION CONSTRAINTS [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Automatic 3D building reconstruction from laser scanning or photogrammetric point clouds has gained increasing attention in the past two decades. Although many efforts have been made, the complexity of buildings and incompletion of point clouds, i.e ...
Y. Li, B. Wu
doaj +1 more source
On the Graovac-Pisanski index [PDF]
Kragujevac Journal of Science, 2017 The Graovac-Pisanski index (GP index) is an algebraic approach for generalizing the Wiener index. In this paper, we compute the difference between the Wiener and GP indices for an infinite family of polyhedral graphs.
Hakimi-Nezhaad Mardjan +1 more
doaj +1 more source