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Sobre

Sobre

Victor Francisco Fonte é licenciado em Engenharia de Sistemas e Informática, mestre em Sistemas Distribuídos e doutorado em Tecnologias da Programação pela Universidade do Minho.

Os seus actuais interesses de investigação estão focados em operação autónoma em sistemas distribuídos com aplicação a sistemas de grande-escala, fracamente ligados e ambientes de operação autónoma. Os seus interesses abarcam também os modelos de coerência inevitavel e técnicas para bases de dados chave-valor multi-centro de daods, e plataformas transacionais multi-camada altamente escaláveis.  A sua investigação tem também estado focada em replicação, gestão autónoma de identidade e registo de causalidade. Supervisiona várias dissertações de mestrado, projectos de doutoramento e pós-doutoramento, e lecciona unidades curriculares de 2º ciclo no domínio de Sistemas Dsitribuídos e Segurança de Sistemas de Informação.

Colabora em vários projectos de investigação com financiamento FCT e de fundos da União Europeia, e tem servido como coordenador e consultor em vários projectos financiados pelo QREN e actualmente pelos programas 2020.

Foi co-fundador e supervisionou o Grupo de Investigação Linux (GIL, 1995-2008), e o Grupo de Interesse em Computação Móvel ( 2010-12) na Universidade do Minho, e tem estado activamente envolvido em vários projectos de software e de investigação no âmbito do código-fonte e formatos abertos.

Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Vítor Francisco Fonte
  • Cluster

    Informática
  • Cargo

    Investigador Sénior
  • Desde

    01 novembro 2011
Publicações

2020

EAGP: An Energy-Aware Gossip Protocol for Wireless Sensor Networks

Autores
Ferreira, BC; Fonte, V; Silva, JMC;

Publicação
2020 28TH INTERNATIONAL CONFERENCE ON SOFTWARE, TELECOMMUNICATIONS AND COMPUTER NETWORKS (SOFTCOM)

Abstract
In Wireless Sensor Networks (WSN), typically composed of nodes with resource constraints, leveraging efficient processes is crucial to enhance the network lifetime and, consequently, the sustainability in ultra-dense and heterogeneous environments, such as smart cities. Particularly, balancing the energy required to transport data efficiently across such dynamic environments poses significant challenges to routing protocol design and operation, being the trade-off of reducing data redundancy while achieving an acceptable delivery rate a fundamental research topic. In this way, this work proposes a new energy-aware epidemic protocol that uses the current state of the network energy to create a dynamic distribution topology by self-adjusting each node forwarding behavior as eager or lazy according to the local residual battery. Simulated evaluations demonstrate its efficiency in energy consumption, delivery rate, and reduced computational burden when compared with classical gossip protocols as well as with a directional protocol.

2019

Optimal control applied to an irrigation planning problem: A real case study in Portugal

Autores
Lopes, SO; Pereira, RMS; Pereira, PA; Caldeira, AC; Fonte, VF;

Publicação
International Journal of Hydrology Science and Technology

Abstract
In this paper, a daily plan model to the irrigation of a crop field using optimal control was developed. This daily plan model have in consideration: weather data (temperatures, rainfall, wind speed), the type of crop, the location, humidity in the soil at the initial time, the type of soil and the type of irrigation. The aim is to minimise the water used in the irrigation systems ensuring that the field crop is kept in a good state of preservation. MATLAB was used to develop our mathematical model and obtain its output. Its results were compared with experimental ones obtained from a real farm field of grass in Portugal. This comparison not only allowed us to validate our model, but also allowed us to conclude that, using optimal control considerable savings in water resources, while keeping the crop safe are obtained. Some real test cases were simulated and the comparison between the optimised water to be used by the irrigation system (calculated by software) and the real amount of water used in irrigation site (on-off control system for irrigation) produced water savings above 10%. © 2019 Inderscience Enterprises Ltd.

2019

Data Security and Trustworthiness in Online Public Services: An Assessment of Portuguese Institutions

Autores
Silva, JMC; Fonte, V;

Publicação
PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON THEORY AND PRACTICE OF ELECTRONIC GOVERNANCE (ICEGOV2019)

Abstract
Providing public services through the internet is an effective approach towards an encompassing number of citizens being covered by them and for cost reduction. However, the fast development of this area has fostered discussion and legislation regarding information security and trustworthiness. In addition to security mechanisms for data processed and stored internally, service providers must ensure that data exchanged between their servers and citizens are not intercepted or modified when traversing heterogeneous and uncontrolled networks. Moreover, such institutions should provide means enabling the citizen to verify the authenticity of the services offered. In this way, the present work provides a comprehensive overview regarding the security posture of Portuguese public institutions in their online services. It consists of non-invasive robustness evaluation of the deployed solutions for end-to-end data encryption and the correct use of digital certificates. As a result, we provide some recommendations aiming to enhance the current panorama in the majority of the 111 online services considered in this study.

2018

Qualification offer in EGOV competencies in PALOP-TL

Autores
Silva, JMC; Ramos, LFM; Fonte, V;

Publicação
ACM International Conference Proceeding Series

Abstract
Information and Communications Technologies (ICT) have been successfully used in order to promote and pursue the goals of UN's 2030 Agenda for Sustainable Development. Meeting these goals, however, require significant efforts on public policy development, adequate planning and implementation, as well as qualified human resources working at every level of government, public administration and institutions. This paper presents a first quantitative analysis originated from Electronic Government-related training sessions that took place on all five Portuguese Speaking African Countries, and in Timor-Leste along 2017. The results focus on (i) the availability of higher education institutions offering courses related to EGOV on each of those countries; (ii) the qualification of the professionals attending those sessions; and (iii) how availability of local higher education courses translates into qualifications of local professionals serving at public administration level. This paper also discusses some perceptions gathered from the field, both from participants and lecturer teams, framing additional challenges that EGOV-related courses must take into account in those particular settings. It concludes by pointing out some of the works already taking place, which provides a deeper understanding of the workforce competencies in EGOV for each of those countries. © 2018 Copyright is held by the owner/author(s). Publication rights licensed to ACM.

2018

Optimized Planning of Different Crops in a Field Using Optimal Control in Portugal

Autores
Pereira, RMS; Lopes, S; Caldeira, A; Fonte, V;

Publicação
SUSTAINABILITY

Abstract
Climate change is a proven fact. In the report of 2007 from IPCC, one can read that global warming is an issue to be dealt with urgently. In many parts of the world, the estimated rise of temperature (in a very near future) is significant. One of the most affected regions is the Iberian Peninsula, where the increasing need for water will very soon be a problem. Therefore, it is necessary that decision makers are able to decide on all issues related to water management. In this paper, we show a couple of mathematical models that can aid the decision making in the management of an agricultural field at a given location. Having a field, in which different crops can be produced, the solution of the first model indicates the area that should be used for each crop so that the profit is as large as possible, while the water spent is the smallest possible guaranteeing the water requirements of each crop. Using known data for these crops in Portugal, including costs of labour, machines, energy and water, as well as the estimated value of the products obtained, the first mathematical model developed, via optimal control theory, obtains the best management solution. It allows creating different scenarios, thus it can be a valuable tool to help the farmer/decision maker decide the crop and its area to be cultivated. A second mathematical model was developed. It improves the first one, in the sense that it allows considering that water from the rainfall can be collected in a reservoir with a given capacity. The contribution of the collected water from the rainfall in the profit obtained for some different scenarios is also shown.

Teses
supervisionadas

2022

Análise de Problemas de Configuração e Conformidade em Infrastructure-as-Code

Autor
Rafaela Maria Soares da Silva

Instituição
UM

2022

Mobile ID como um serviço - Generalização de aplicações Mobile ID baseadas na norma ISO/IEC DIS 18013-5

Autor
Filipa Correia Parente

Instituição
UM

2022

Monotorização de segurança para sistemas de identificação pessoal digital e móvel baseado em modelos

Autor
Diogo Rafael Ferraz Duarte

Instituição
UM

2022

Information security monitoring systems in digital and mobile identification environments

Autor
Paulo Miguel Novais Gameiro

Instituição
UM

2018

Multi-Value Distributed Key-Value Stores

Autor
Ricardo Jorge Tomé Gonçalves

Instituição
UM