Results 21 to 30 of about 1,002,043 (319)

Calibration of Sliding Friction Coefficient in DEM between Different Particles by Experiment

open access: yesApplied Sciences, 2023
Granular materials are widely prevalent in nature and industry, and the discrete element method (DEM) is the most effective method for the mechanical analysis of granular materials. Because of the difficulty inherent in friction coefficient determination,
Pengcheng Liu   +9 more
doaj   +1 more source

Design of Inventory Management Module in Printing Enterprise Based on Web

open access: yesMATEC Web of Conferences, 2018
Based on the research and analysis of the management method for materials and combined the business process of material management, the inventory management module is designed and realized, which adopts the development mode of browser and server (B/S ...
Ran Peipei   +3 more
doaj   +1 more source

S-Packing Colorings of Cubic Graphs [PDF]

open access: yes, 2016
Given a non-decreasing sequence $S=(s\_1,s\_2, \ldots, s\_k)$ of positive integers, an {\em $S$-packing coloring} of a graph $G$ is a mapping $c$ from $V(G)$ to $\{s\_1,s\_2, \ldots, s\_k\}$ such that any two vertices with color $s\_i$ are at mutual ...
Gastineau, Nicolas, Togni, Olivier
core   +2 more sources

The sphere packing problem in dimension 8The sphere packing problem in dimension 8 [PDF]

open access: yes, 2016
In this paper we prove that no packing of unit balls in Euclidean space R-8 has density greater than that of the E8-lattice packing.
M. Viazovska
semanticscholar   +1 more source

Packing list‐colorings

open access: yesRandom Structures & Algorithms, 2023
AbstractList coloring is an influential and classic topic in graph theory. We initiate the study of a natural strengthening of this problem, where instead of one list‐coloring, we seek many in parallel. Our explorations have uncovered a potentially rich seam of interesting problems spanning chromatic graph theory. Given a ‐list‐assignment of a graph ,
Stijn Cambie   +3 more
openaire   +7 more sources

Nonlinear vibration characteristics and stability of the printing moving membrane

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2017
Most studies on the membrane vibration are limited to discussing small deflection linear problems, but rarely on the study of nonlinear large deflection problems.
Jimei Wu   +4 more
doaj   +1 more source

Digital predictions of complex cylinder packed columns [PDF]

open access: yes, 2008
A digital computational approach has been developed to simulate realistic structures of packed beds. The underlying principle of the method is digitisation of the particles and packing space, enabling the generation of realistic structures.
Ahmad, I.   +4 more
core   +1 more source

Spectral Separation for Multispectral Image Reproduction Based on Constrained Optimization Method

open access: yesJournal of Spectroscopy, 2014
The constrained optimization method is employed to calculate the colorant values of the multispectral images. Because the spectral separation from the 31-dimensional spectral reflectance to low dimensional colorant values is very complex, an inverse ...
Bangyong Sun, Han Liu, Shisheng Zhou
doaj   +1 more source

Qualidade de mandioquinha-salsa minimamente processada e armazenada sob atmosfera modificada Quality of fresh-cut peruvian carrot: use of modified atmosphere

open access: yesCiência Rural, 2009
O objetivo deste trabalho foi verificar o efeito da atmosfera modificada, passiva e ativa, sobre a conservação de mandioquinha-salsa minimamente processada da cultivar 'Amarela de Senador Amaral', adquirida de lavoura comercial do Município de Lavras ...
Elisângela Elena Nunes   +3 more
doaj   +1 more source

Stable Bin Packing of Non-convex 3D Objects with a Robot Manipulator [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2018
Recent progress in the field of robotic manipulation has generated interest in fully automatic object packing in warehouses. This paper proposes a formulation of the packing problem that is tailored to the automated warehousing domain. Besides minimizing
Fan Wang, Kris K. Hauser
semanticscholar   +1 more source

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