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Publicações

2019

Empowering Humans in a Cyber-Physical Production System: Human-in-the-loop Perspective

Autores
Costa, D; Pires, F; Rodrigues, N; Barbosa, J; Igrejas, G; Leitao, P;

Publicação
2019 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL CYBER PHYSICAL SYSTEMS (ICPS 2019)

Abstract
In the Industry 4.0 context, humans are taking up new roles in Cyber-Physical Systems (CPS) since it was realized that they constitute the most flexible part of an automated system. With this new reality, humans are becoming integral parts of CPS, entering in the realm of the Human-in-the-Loop of Cyber-Physical Systems (HiLCPS). In this paper, the challenges and technologies for the integration of humans in CPS environments are briefly discussed, and a practical application of the HiLCPS concept is presented. For this purpose, a human operation workbench is empowered with intelligent decision and assistant systems that use, among others, reasoning algorithms, image processing and speech recognition, to improve the productivity and quality of the tasks performed by humans, particularly focusing the assembly of highly customized products, as well as the training of operators to perform complex assembly, repairing or maintenance tasks.

2019

Reliability Enhancement of LV Rural Networks using Smart Grid Technologies

Autores
Ellery M.L.; Ndawula M.B.; Hernando-Gil I.;

Publicação
SEST 2019 - 2nd International Conference on Smart Energy Systems and Technologies

Abstract
This paper analyses the effect of new smart grid technologies (SGTs) on the reliability indices typically specified by distribution network operators in low-voltage rural distribution systems. Rural areas generally denoted as 'thinly-populated', are to a large extent neglected in the anticipated transformation of existing networks into the future smart grid. An innovative Monte Carlo simulation technique is refined in this analysis to model the stochastic failure rates of power components over a specific time period, which are then applied to network load flow analysis to assess the quality of supply enhancement of a modelled rural distribution network. The proposed method enables much faster and more refined reliability studies, allowing for larger data sets to capture the inherent uncertainty from the new SGTs. Simulation results providing base case reliability indices, and the addition of SGTs accumulated from models in previous works, provide scenarios used for comparison into SGT-effectiveness.

2019

Literature on Wearable Technology for Connected Health: scoping review on research trends, advances and barriers (Preprint)

Autores
Loncar-Turukalo, T; Zdravevski, E; Machado Da Silva, J; Chouvarda, I; Trajkovik, V;

Publicação

Abstract
BACKGROUND

In the last decade the advances in wearable technology have driven and transformed performance monitoring in fitness and wellness applications, surveillance in extreme (working) conditions, and management of chronic diseases. These innovations have opened a whole new perspective on health and social care, challenged by vast expenditures in ageing societies.

OBJECTIVE

The aim of this study is to scope the scientific literature in the field of pervasive wearable health monitoring in the time interval 2010-2019, identify chronological research trends and milestones, enabling technology innovations, and spot the gaps and barriers from technology and user perspectives.

METHODS

This study follows the scoping review methodology and PRISMA guidelines to identify and process the available literature. As the scope surpasses the possibilities of manual search, we rely on Natural Language Processing (NLP) to ensure efficient and exhaustive search of the literature corpus in three large digital libraries: IEEE, PubMed and Springer. The search is based on keywords and properties to be found in the articles using the search engines of the digital libraries.

RESULTS

The chronological analysis highlights the increasing numbers of publications that address health-related wearable technologies resulting from collaborative work on a global scale. The identified articles indicate the research focus on technology, delivery of prescriptive information, and user (data) safety and security. The literature corpus evidences major research progress in sensor technology (with regard to miniaturization and placement), communication protocols, data analytics, and evolution of cloud and edge computing powered architectures. The most addressed user related concerns are (technology)acceptance and privacy. The research lag in battery technology puts energy-efficiency as relevant consideration both in the design of sensor and network architectures with computational offloading. User-related gaps indicate more efforts should be invested into formalizing clear use-cases with timely and valuable feedback and prescriptive recommendations.

CONCLUSIONS

There is no doubt that wearable technology is a key enabler of a new model of healthcare delivery. While technology is driving the transformation, there is ongoing research resolving the user concerns related to reliability, privacy, comfort, and delivered feedback. The current research focus is on sustainable delivery of valuable recommendations, the enforcement of privacy by design, and technological solutions for energy-efficient pervasive sensing, seamless monitoring, and low-latency 5G communications.

2019

A Smart City's Model Secured by Blockchain

Autores
Brandao, A; Mamede, HS; Goncalves, R;

Publicação
TRENDS AND APPLICATIONS IN SOFTWARE ENGINEERING (CIMPS 2018)

Abstract
The topic of Smart Cities involves various aspects of convergence and support to necessarily safe activities, which are dependent on reliable data and reliable sources. The answer could be provided by means of the adoption model of Blockchain technologies for this purpose, applied to the different characteristics of the city from the electronic governance, the contracting of products and services, and the sensing or data collection. The multiple IoT objects and the multiple networks, together with the Blockchain technology, may result in safer and more efficient cities. This paper analyzes and deepens the concept of Smart Cities using Blockchain technology as a platform for safety and reliability of the data. It is intended to reflect critically on this topic, looking through the different aspects involving this concept and the way in which it can implement. It analyzes the Smart Cities and its ecosystems with the generic data models, integrated, with quality data and trusted information.

2019

ECML PKDD 2018 Workshops - DMLE 2018 and IoTStream 2018, Dublin, Ireland, September 10-14, 2018, Revised Selected Papers

Autores
Monreale, A; Alzate, C; Kamp, M; Krishnamurthy, Y; Paurat, D; Mouchaweh, MS; Bifet, A; Gama, J; Ribeiro, RP;

Publicação
DMLE/IOTSTREAMING@PKDD/ECML

Abstract

2019

Tackling perishability in multi-level process industries

Autores
Wei, WC; Amorim, P; Guimaraes, L; Almada Lobo, B;

Publicação
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH

Abstract
The classical multi-level lot-sizing and scheduling problem formulations for process industries rarely address perishability issues, such as limited shelf lives of intermediate products. In some industries, ignoring this specificity may result in severe losses. In this paper, we start by extending a classical multi-level lot-sizing and scheduling problem formulation (MLGLSP) to incorporate perishability issues. We further demonstrate that with the objective of minimising the total costs (purchasing, inventory and setup), the production plans generated by classical models are often infeasible under a setting with perishable products. The model distinguishes different perishability characteristics of raw materials, intermediates and end products according to various industries. Finally, we provide quantitative insights on the importance of considering perishability for different production settings when solving integrated production planning and scheduling problems.

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