Search results for "Interactive"

Integrating risk management tools for regional forest planning : an interactive multiobjective value at risk approach

2018

In this paper, we present an approach employing multiobjective optimization to support decision making in forest management planning under risk. The primary objectives are biodiversity and timber cash flow, evaluated from two perspectives: the expected value and the value-at-risk (VaR). In addition, the risk level for both the timber cash flow and biodiversity values are included as objectives. With our approach, we highlight the trade-off between the expected value and the VaR, as well as between the VaRs of the two objectives of interest. We employ an interactive method in which a decision maker iteratively provides preference information to find the most preferred management plan and lea…

Flexible Data Driven Inventory Management with Interactive Multiobjective Lot Size Optimization

2021

We study data-driven decision support and formalise a path from data to decision making. We focus on lot sizing in inventory management with stochastic demand and propose an interactive multi-objective optimisation approach. We forecast demand with a Bayesian model, which is based on sales data. After identifying relevant objectives relying on the demand model, we formulate an optimisation problem to determine lot sizes for multiple future time periods. Our approach combines different interactive multi-objective optimisation methods for finding the best balance among the objectives. For that, a decision maker with substance knowledge directs the solution process with one’s preference inform…

Approximation through interpolation in nonconvex multiobjective optimization

2011

Approximation method for computationally expensive nonconvex multiobjective optimization problems

2012

On solving computationally expensive multiobjective optimization problems with interactive methods

2014

Interactive Guidance Intervention to Address Sustained Social Withdrawal in Preterm Infants in Chile: Protocol for a Randomized Controlled Trial

2020

Background Preterm newborns can be exposed early to significant perinatal stress, and this stress can increase the risk of altered socioemotional development. Sustained social withdrawal in infants is an early indicator of emotional distress which is expressed by low reactivity to the environment, and if persistent, is frequently associated with altered psychological development. Infants born prematurely have a higher probability of developing sustained social withdrawal (adjusted odds ratio 1.84, 95% CI 1.04-3.26) than infants born full term, and there is a correlation between weight at birth and sustained social withdrawal at 12 months of age. Objective The aims of this study are to comp…

High Reynolds number Navier-Stokes solutions and boundary layer separation induced by a rectilinear vortex array

2008

Numerical solutions of Prandtl’s equation and Navier Stokes equations are considered for the two dimensional flow induced by an array of periodic rec- tilinear vortices interacting with an infinite plane. We show how this initial datum develops a separation singularity for Prandtl equation. We investigate the asymptotic validity of boundary layer theory considering numerical solu- tions for the full Navier Stokes equations at high Reynolds numbers.

Destination Governance at Stake: Fostering Policy Coordination Among Decision-Makers of a Small Town

2018

This research aims to foster small-town decision-makers’ awareness of policy coordination as a central issue in either implementing collaborative governance and designing tourism development policies. To this end, a System Dynamics-based Interactive Learning Environment (ILE) has been designed with the intent of challenging decision-makers to increase tourism in the small town, while managing trade-offs among individualistic vs. collaborative behaviour. The action research took place in Castelbuono, a small tourism destination in Sicily (Italy). Three major decision-makers were involved: the mayor of the town, the museum’s director, and a restaurant owner. The use of the ILE has enabled dec…

Facebook’s Emotional Contagion Experiment as a Challenge to Research Ethics

2016

This article analyzes the ethical discussion focusing on the Facebook emotional contagion experiment published by the <em>Proceedings of the National Academy of Sciences</em> in 2014. The massive-scale experiment manipulated the News Feeds of a large amount of Facebook users and was successful in proving that emotional contagion happens also in online environments. However, the experiment caused ethical concerns within and outside academia mainly for two intertwined reasons, the first revolving around the idea of research as manipulation, and the second focusing on the problematic definition of informed consent. The article concurs with recent research that the era of social med…

Aprendizaje de los fundamentos de la probabilidad apoyado en las TICs

2012

La red puede utilizarse como una herramienta docente más en Estadística, ya que en ella se puede acceder a numerosos recursos que pueden incorporarse a la docencia. En este artículo se describe un proyecto de integración de las denominadas simulaciones interactivas en una de las ramas de la Estadística en las que se pueden emplear: la probabilidad. El uso de estos recursos permite al alumno aprender de su propia experiencia y visualizar los conceptos estadísticos, lo que contribuye a mejorar su proceso de aprendizaje.