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Publications

2023

Modeling and Simulation of a Crossdocking System with an Integrated AS/RS

Authors
Alves, J; Silva, MF; Ribeiro, F;

Publication
ROBOT2022: FIFTH IBERIAN ROBOTICS CONFERENCE: ADVANCES IN ROBOTICS, VOL 2

Abstract
Logistics chains are being increasingly developed due to several factors, among which the exponential growth of e-commerce. Cross-docking is a logistics strategy used by several companies from varied economic sectors, applied in warehouses and distribution centres. In this context, it is the objective of the CrossLog - Automatic Mixed-Palletizing for Crossdocking Logistics Centers Project, to investigate and study an automated and collaborative crossdocking system, capable of moving and managing the flow of products within the warehouse in the fastest and safest way. In its scope, this paper describes the modelling and simulation of a crossdocking system, with an integrated AS/RS, to analyse possible alternatives including not only the fast movement of products, but also its storage in case needed. Different scenarios were modelled and simulated, on the FlexSim software, and the obtained results for each one were critically analysed to draw conclusions on the best storage policy.

2023

Investigating the Effectiveness of Process Control Didactics Kits in Engineering Education

Authors
Silva, V; Oliveira, PM; Leao, P; Soares, F; Lopes, H; Machado, J;

Publication
2023 5th International Conference of the Portuguese Society for Engineering Education, CISPEE 2023

Abstract
This paper deliberates some of the motivations for contemplating Kits in the theoretical-practical class of a Curricular Unit of Process Control to first year students of a Master Degree in Mechanical Engineering, alongside their purpose. Also, the perceptions of these students about the use of these kits in their learning process are discussed based on an online questionnaire developed for that purpose. According to students' feedback, gathered by an anonymous online questionnaire, it was possible to investigate the effectiveness of the use of didactics kits in the learning of Process Control topics. The obtained results from the students perception are clearly positive and motivating to further uses of this type kit as portable laboratories. © 2023 IEEE.

2023

A Data logger for educational purposes of a laboratory chemical reactor: an IoT approach

Authors
Lima, J; Brito, T; Ferreira, O; Afonso, J; Pinto, H; Carvalho, A; Costa, P;

Publication
International Conference on Electrical, Computer, Communications and Mechatronics Engineering, ICECCME 2023

Abstract
This paper presents the development of an acquisition system and data logger from an existing set of three continuous stirred-tank reactors in series. The reactors are currently used in chemical engineering educational laboratories to perform kinetic and tracer experiments. In this sense, to accomplish the store data process, the volumetric flow rate and the concentration of tracer, reactants and/or products of the reaction must be acquired as a function of time. In the original experimental setup, only the signal conditioning system was operational, while the acquisition, visualization, and control systems were obsolete and damaged. Thus, a new system composed of an interface and real-time acquisition data is proposed alongside preserving the main reactor structure. A graphical user interface and the automation of the various actuators were developed based on worldwide usage and low cost, respectively. This system, based on a common 8-bit microcontroller and an application developed in Lazarus, allows the storage of the acquired data in a time-series database. In this way, students can analyze the results later or in real time. Moreover, remote access allows controlling the reactor and getting data by the Internet of Things (IoT) resources. Additionally, the proposed system using IoT allows data to be shared with the community as a dataset. © 2023 IEEE.

2023

Report on the 6th International Workshop on Narrative Extraction from Texts (Text2Story 2023) at ECIR 2023

Authors
Campos, R; Jorge, AM; Jatowt, A; Bhatia, S; Litvak, M; Cordeiro, JP; Rocha, C; Sousa, H; Mansouri, B;

Publication
SIGIR Forum

Abstract

2023

Technician Routing and Scheduling Problem: A Case Study

Authors
Nunes, C; Lopes, MP;

Publication
QUALITY INNOVATION AND SUSTAINABILITY, ICQIS 2022

Abstract
The problem of routing and scheduling of technicians is a problem that technical assistance and maintenance companies face nowadays, market competitiveness requires quick response, service diversification, and customer satisfaction. The relationship between competitiveness and profitability of companies involves the effective management of their resources. The work developed addresses a real problem of a major Portuguese company providing technical assistance to the home, a varied set of services (need for specific skills and execution times) must be scheduled for a set of technicians with heterogeneous skills and geographical locations (start and end of the route) based on their different places of residence. The results show a considerable increase in the efficiency levels of the solution obtained when compared to the company's current solution and reveals that the lack of homogeneity of skills among technicians and the variation in service flows are factors that should be considered in the operational management of resources and the contracting of work, and that the increase in working hours can also contribute to improving the efficiency of the process.

2023

Métodos para criação de narrativas imersivas: uma revisão de revisões da literatura

Authors
Bonfim, CJdL; Morgado, L; Pedrosa, DCC;

Publication
Novos Olhares

Abstract
O conceito de narrativa imersiva enfoca narrativas enquanto forma de promover o estado psicológico de imersão do público-alvo. Este artigo apresenta o resultado de uma revisão de revisões de literatura que objetivou identificar os principais métodos para concepção e criação de narrativas imersivas, considerando aspectos estruturais e elementos específicos, como personagens e cenários. Os resultados revelaram cinco clusters com características diferenciadas, considerando as dimensões da imersão narrativa temporal, espacial e emocional.

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