Results 11 to 20 of about 350,084 (285)
On the validity of Friedrichs' inequalities.
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Krizek, Michal, Neittaanmäki, Pekka
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The main goal of the present research is to describe the development and validation of the Perceived Economic Inequality Scale (PEIS), an instrument measuring individuals' perception of economic inequality at the national level. The study was conducted on a representative sample of the Italian population (N = 1446, 51% women).
Valtorta, RR +4 more
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The Validity of Shapiro's Cyclic Inequality [PDF]
A cyclic sum S N ( x ) = ∑ x i / ( x i +
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Valid inequalities based on simple mixed-integer sets [PDF]
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Dash, Sanjeeb, Günlük, Oktay
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In this paper, a two-stage stochastic programming modelling is proposed, to design a multi-period, multistage, and single-commodity integrated forward/reverse logistics network design problem under uncertainty.
Vahab Vahdat, Mohammad Ali Vahdatzad
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A polyhedral approach for the Equitable Coloring Problem [PDF]
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.
Bahiense +15 more
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Some Nonlinear Integral Inequalities Connected with Retarded Terms on Time Scales
The objective of this research is to formulate a specific class of integral inequalities of Gronwall kind concerning retarded term and nonlinear integrals with time scales theory.
Zareen A. Khan +4 more
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Robust network design: Formulations, valid inequalities, and computations [PDF]
AbstractTraffic in communication networks fluctuates heavily over time. Thus, to avoid capacity bottlenecks, operators highly overestimate the traffic volume during network planning. In this article we consider telecommunication network design under traffic uncertainty, adapting the robust optimization approach of Bertsimas and Sim [Oper Res 52 (2004),
Koster, Arie M. C. A. +2 more
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A metaheuristic method for the multireturn-to-depot petrol truck routing problem with time windows
The petrol truck routing problem is an important part of the petrol supply chain. This study focuses on determining routes for distributing petrol products from a depot to petrol stations with the objective of minimizing the total travel cost and the ...
Bohong Wang +4 more
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Valid inequalities for mixed integer linear programs [PDF]
This tutorial presents a theory of valid inequalities for mixed integer linear sets. It introduces the necessary tools from polyhedral theory and gives a geometric understanding of several classical families of valid inequalities such as lift-and-project cuts, Gomory mixed integer cuts, mixed integer rounding cuts, split cuts and intersection cuts, and
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