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Publicações

2019

A GENERALIZED EDUCATIONAL ROBOT BASED ON MATLAB/ROS/ROBOTIC PLATFORM

Autores
Rosillo-Guerrero, N; Montés, N; Fonseca Ferreira, NM;

Publicação
INTED2019 Proceedings

Abstract

2019

How Foreign Tourist Intermediaries Perceive and Sell a Destination

Autores
Gomes, AM; Augusto da Costa, R; Moreira, AC;

Publicação
Advances in Marketing, Customer Relationship Management, and E-Services - Strategic Perspectives in Destination Marketing

Abstract
Research on tourist destination images is vast and embraces many destinations, approaches, and methods. More attention has been given to the perspective of final customers, instead of the ones who sell the tourist products to them. This chapter aims to understand how foreign tourist intermediaries, from the top outbound countries, perceive and sell Portugal as a tourist destination. It aims also to analyze the travel motivations they expect Portugal can satisfy and the information sources used to collect information to create tourist products regarding this destination. Foreign tourist intermediaries have a very positive image of Portugal as a destination, associating it to a set of cognitive attributes and psychological motivations.

2019

Optimal home energy management under hybrid photovoltaic-storage uncertainty: A distributionally robust chance-constrained approach

Autores
Zhao P.; Wu H.; Gu C.; Hernando-Gil I.;

Publicação
IET Renewable Power Generation

Abstract
Energy storage and demand response (DR) resources, in combination with intermittent renewable generation, are expected to provide domestic customers with the ability to reducing their electricity consumption. This study highlights the role that an intelligent battery control, in combination with solar generation, could play to increase renewable uptake while reducing customers' electricity bills without intruding on people's daily life. The optimal performance of a home energy management system (HEMS) is investigated through a range of interventions, leading to different levels of customer weariness and consumption patterns. Thus, the DR is applied with efficient and specific control of domestic appliances through load shifting and curtailment. Regarding the uncertainty associated with the photovoltaic generation, a chance-constrained (CC) optimal scheduling is considered subject to the operation constraints from each power component in the HEMS. By applying distributionally robust optimisation, the ambiguity set is accurately built for this distributionally robust CC (DRCC) problem without the need for any probability distribution associated with uncertainty. Based on the greatly altered consumption profiles in this study, the proposed DRCC-HEMS is proven to be optimally effective and computationally efficient while considering uncertainty.

2019

Joint production and transportation scheduling in flexible manufacturing systems

Autores
Fontes, DBMM; Homayouni, SM;

Publicação
JOURNAL OF GLOBAL OPTIMIZATION

Abstract
This work proposes an integrated formulation for the joint production and transportation scheduling problem in flexible manufacturing environments. In this type of systems, parts (jobs) need to be moved around as the production operations required involve different machines. The transportation of the parts is typically done by a limited number of Automatic Guided Vehicles (AGVs). Therefore, machine scheduling and AGV scheduling are two interrelated problems that need to be addressed simultaneously. The joint production and transportation scheduling problem is formulated as a novel mixed integer linear programming model. The modeling approach proposed makes use of two sets of chained decisions, one for the machine and another for the AGVs, which are inter-connected through the completion time constraints both for machine operations and transportation tasks. The computational experiments on benchmark problem instances using a commercial software (Gurobi) show the efficiency of the modeling approach in finding optimal solutions.

2019

Geometry-Based Skin Colour Estimation for Bare Torso Surface Reconstruction

Autores
Monteiro, JP; Zolfagharnasab, H; Oliveira, HP;

Publicação
IMAGE ANALYSIS AND PROCESSING - ICIAP 2019, PT II

Abstract
Three-dimensional imaging techniques have been endeavouring at reaching affordable ubiquity. Nevertheless, its use in clinical practice can be hampered by less than naturally looking surfaces that greatly impact its visual inspection. This work considers the task of surface reconstruction from point clouds of non-rigid scenes acquired through structured-light-based methods, wherein the reconstructed surface contains some level of imperfection to be inpainted before visualized by experts in a clinically oriented context. Appertain to the topic, the recovery of colour information for missing or damaged partial regions is considered. A local geometry-based interpolation method is proposed for the reconstruction of the bare human torso and compared against a reference differential equations based inpainting method. Widely used perceptual distance-based metrics, such as PSNR, SSIM and MS-SSIM, and the evaluation from a panel of experienced breast cancer surgeons is presented for the discussion on inpainting quality assessment.

2019

Progress in Artificial Intelligence - 19th EPIA Conference on Artificial Intelligence, EPIA 2019, Vila Real, Portugal, September 3-6, 2019, Proceedings, Part I

Autores
Oliveira, PM; Novais, P; Reis, LP;

Publicação
EPIA (1)

Abstract

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