2015
Autores
Ferreira, LL; Pinho, LM; Albano, M; Teixeira, C;
Publicação
ACM SIGBED Review
Abstract
2016
Autores
Santos, Joss; Albano, Michele; Lino Ferreira, Luis;
Publicação
INForum Simpósio de Informática
Abstract
The FlexOffer (FO) concept was initially created within the EU FP7 project
MIRABEL [1]. It permits exposing demand and supply loads with associated flexibilities
in time and quantity for energy commerce, load levelling, and different use-cases.
To put it in a simple way, a FO specifies an amount of energy, a duration, an earliest
begin time, a latest finish time, and a price, e.g., "I want 50 KWh over 3 hours between
5 PM and 12 PM, for a value of 0.25 €/kWh".
2018
Autores
Lino Ferreira, Luis; Albano, Michele; Rocha, Rafael; Costa, Miguel; Machado Silva, Ana; Silva, Marlos; Matos, Luísa; Afonso Landeck, Jorge;
Publicação
INForum 2018 - Simpósio de Informática
Abstract
This communication describes research and development directions
that are being explored for the creation of a maintenance system for home appliances. The solution will enable a faster and more accurate automation of after-sale services for home appliances. It will be based on three tiers: data acquisition, data analysis and business tiers. The communication provides a context
for the work, both regarding the application area in general and the three tiers,
and then describes the objectives of the system being designed.
2021
Autores
Fonseca, T; Ferreira, LL; Klein, L; Landeck, J; Sousa, P;
Publicação
PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON SENSOR NETWORKS (SENSORNETS)
Abstract
The electricity field is facing major challenges in the implementation of Renewable Energy Sources (RES) at a large scale. End users are taking on the role of electricity producers and consumers simultaneously (prosumers), acting like Distributed Energy Resources (DER), injecting their excess electricity into the grid. This challenges the management of grid load balance, increases running costs, and is later reflected in the tariffs paid by consumers, thus threatening the widespread of RES. The Flexigy project explores a solution to this topic by proposing a smart-grid architecture for day-ahead flexibility scheduling of individual and Renewable Energy Community (REC) resources. Our solution is prepared to allow Transmission System Operators (TSO) to request Demand Response (DR) services in emergency situations. This paper overviews the grid balance problematic, introduces the main concepts of energy flexibility and DR, and focuses its content on explaining the Flexigy architecture.
2023
Autores
Severino, R; Rodrigues, J; Alves, J; Ferreira, LL;
Publicação
JOURNAL OF SENSOR AND ACTUATOR NETWORKS
Abstract
The fast development and adoption of IoT technologies has been enabling their application into increasingly sensitive domains, such as Medical and Industrial IoT, in which safety and cyber-security are paramount. While the number of deployed IoT devices increases annually, they still present severe cyber-security vulnerabilities, becoming potential targets and entry points for further attacks. As these nodes become compromised, attackers aim to set up stealthy communication behaviours, to exfiltrate data or to orchestrate nodes in a cloaked fashion, and network timing covert channels are increasingly being used with such malicious intents. The IEEE 802.15.4 is one of the most pervasive protocols in IoT and a fundamental part of many communication infrastructures. Despite this fact, the possibility of setting up such covert communication techniques on this medium has received very little attention. We aim to analyse the performance and feasibility of such covert-channel implementations upon the IEEE 802.15.4 protocol, particularly upon the DSME behaviour, one of the most promising for large-scale time critical communications. This enables us to better understand the involved risk of such threats and help support the development of active cyber-security mechanisms to mitigate these threats, which, for now, we provide in the form of practical network setup recommendations.
2024
Autores
Kanak, A; Ergün, S; Arif, I; Ergün, SH; Bektas, C; Atalay, AS; Herkiloglu, O; Defossez, D; Yazici, A; Ferreira, LL; Strelec, M; Kubicek, K; Cech, M; Davoli, L; Belli, L; Ferrari, G; Bayar, D; Kafali, A; Karamavus, Y; Sofu, AM; Hartavi Karci, AE; Constant, P;
Publicação
Open Research Europe
Abstract
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