Titlebook: Operations Research and Enterprise Systems; Third International Eric Pinson,Fernando Valente,Begoña Vitoriano Conference proceedings 2015

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Nash Equilibria for Multi-agent Network Flow with Controllable Capacitiesoutes A third-party agent, a customer, is interesting in maximizing the product flow transshipped from a source to a sink node through the network and offers a reward that is proportional to the flow value the transportation agents manage to provide. This problem can be viewed as a Multi-Agent Minim

星球的光亮度

A Fuzzy Model for Selecting Safeguards to Reduce Risks in Information Systemsdependency between assets. Threats are events that can trigger an incident in the organization, causing damage or intangible material loss to assets, and safeguards are measures for addressing threats. In this paper, we propose a fuzzy approach for selecting safeguards that minimizes costs while kee

nocturnal

A Performance Improvement and Management Model for Small and Medium Sized Enterprisesiness to continuously assess their performance and competitiveness. This paper proposes a model that will assist companies, particularly the small and medium-sized enterprises, assess their performance by prioritizing performance measures and selecting an adequate operations strategy under various m

WITH

Adjacency Variables Formulation for the Minimum Linear Arrangement Problemcouple of valid equalities and inequalities for this formulation, some of them deriving from on a new general partitioning approach that is not limited to our formulation. We numerically tested the lower bound provided by the linear relaxation using instances of the matrix market library. Our result

FLASK

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Archimedean Copulas in Joint Chance-Constrained Programminghe constraint matrix are dependent, the dependence is driven by a convenient Archimedean copula. We describe main properties of the problem, show how dependence modeled through copulas translates to the model formulation, and prove that the resulting problem is convex for a sufficiently high probabi

Noctambulant

Comparison of Stochastic Programming Approaches for Staffing and Scheduling Call Centers with Uncert number of agents to be assigned to each shift of the scheduling horizon so as to reach the required customer quality of service. We assume that the mean call arrival rate in each period of the horizon is a random variable following a continuous distribution. We model the resulting optimization prob

antidote

A New Look at the Covariance Matrix Estimation in Evolution Strategiesvariance matrix adaptation, a mechanism which is central to the algorithm. The adaptation focusses strongly on the sample covariance. However, as known from modern statistics, this estimate may be of poor quality if certain conditions are not fulfilled. Unfortunately, this is often the case in pract

DEAF

A Relax and Fix Approach to Solve the Fixed Charge Network Design Problem with User-Optimal Flownning problems arise as tools to support decision-making, aiming to meet the need of finding efficient ways to perform such transportations. This paper reviews a bi-level formulation, a one level formulation obtained by applying the complementary slackness theorem, Bellman’s optimality conditions, B

Common-Migraine

Analysis of a Downward Substitution Strategy in a Manufacturing/Remanufacturing Systemption, new and remanufactured products are treated as different products with different costs and selling prices as well as separate demand streams. Remanufactured products have a higher stock out risk because the remanufacturing capacity is limited by the amount of returns available for remanufactu