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- A Mechanism for Verifying the Integrity and Immutability of Tuberculosis Data Using IOTA Distributed Ledger TechnologyPublication . Lima, Vinícius; Bernardi, Filipe; Rijo, Rui; Ueyama, Jó; Alves, DomingosBackground: Intensified research and innovation and rapid uptake of new tools, interventions, and strategies are crucial to fight Tuberculosis, the world's deadliest infectious disease. The sharing of health data remains a significant challenge. Data consumers must be able to verify the consistency and integrity of data. Solutions based on distributed ledger technologies may be adequate, where each member in a network holds a unique credential and stores an identical copy of the ledger and contributes to the collective process of validating and certifying digital transactions. Objectives: This work proposes a mechanism and presents a use case in Digital Health to allow the verification of integrity and immutability of TB electronic health records. Methods: IOTA was selected as a supporting tool due to its data immutability, traceability and tamper-proof characteristics. Results: A mechanism to verify the integrity of data through hash functions and the IOTA network is proposed. Then, a set of TB related information systems was integrated with the network. Conclusion: IOTA technology offers performance and flexibility to enable a reliable environment for electronic health records.
- Temporal analysis of CHAVE collectionPublication . Craveiro, Olga; Macedo, Joaquim; Madeira, HenriqueThe importance of temporal information is increasing in several Information Retrieval tasks.
- Database Marketing Process Supported by OntologiesPublication . Mota Pinto, Filipe; Marques, Alzira; Santos, Manuel FilipeThe dramatic explosion of data and the growing number of different data sources are exposing researchers to a new challenge - how to acquire, maintain, and share knowledge from large databases in the context of rapidly applied and evolving research. This paper describes research on an ontological approach for leveraging the semantic content of ontologies to improve knowledge discovery in databases. We analyze how ontologies and knowledge discovery process may interoperate and present our efforts to bridge the two fields, knowledge discovery in databases and ontology learning for successful database usage projects.
- Hybrid model for the energy efficiency of building servicesPublication . Galvão, João; Leitão, Sérgio; Malheiro, Salvador; Gaio, TiagoEnergy is used in multiple activities and represents a fundamental good for the planet and well being of populations. From this stems a steady increase in energy consumption worldwide through the last decade, and it is well known that growing population usually accelerates its consumption.The primary energy consumed on the planet currently has origin in fossil fuels, once responsible for GHG (greenhouse gas) emission source, contributing to the global warming and climate change.In this context to meeting the commitments of the Kyoto Protocol and European standards, it is urgent that there is an increasing integration of all forms of renewable energy, in industrial and economic areas.Consequently, there should be an adaptation to environmental factors and sustainability of the processes of energy production and consumptions, associated with measures that encourage energy efficiency and educate people to the good energy practices, reducing waste also increasing the quality of life of humanity. © 2012 by Nova Science Publishers, Inc. All rights reserved.
- Procedural Virtual WorldsPublication . Rodrigues, Nuno; Magalhães, Luís; Moura, João Paulo; Chalmers, Alan; Santos, Filipe; Morgado, LeonelWith the increasing demand for more complex and larger models in different fields, such as the design of virtual worlds, video games, and computer animated movies, the need to generate them automatically has become more necessary than ever. Manual tools are no longer sufficient to match this rising need, and the impact that automatic tools may have within these fields is essential and may lead to an adoption of virtual worlds in a growing number of applications. Indeed, it is possible to eliminate most of the effort associated with the creation of such environments, by providing tools that may generate “massive” 3D content automatically. In consequence these tools may lead to an exponential growth of virtual environments and represent an important turn into the design of realistic virtual cities, which may have a huge impact on virtual world users. This chapter discusses the very complex issue of where and when procedural modelling may be used and presents some solutions and methods that have been successfully used in the aforementioned fields of application.
- A Parallel Niched Pareto Evolutionary Algorithm for Multiple Sequence AlignmentPublication . Silva, Fernando José Mateus da; Sánchez Pérez, Juan Manuel; Gómez Pulido, Juan Antonio; Vega Rodríguez, Miguel A.Multiple sequence alignment is one of the most common tasks in Bioinformatics. However, there are not biologically accurate methods for performing sequence alignment. Genetic Algorithms are adaptive search methods which perform well in large and complex spaces, such as the ones present when aligning a set of sequences. Parallel Genetic Algorithms, not only increase the speed up of the search, but also improve its efficiency, presenting results that are better than those provided by the sum of several sequential Genetic Algorithms. Although these methods are often used to optimize a single objective, they can also be used in multidimensional domains, finding all possible tradeoffs among multiple conflicting objectives. Parallel AlineaGA is an evolutionary algorithm which makes use of a Parallel Genetic Algorithm for performing multiple sequence alignment. We present a multiple objective approach of Parallel AlineaGA that uses a Parallel Niched Pareto Genetic Algorithm. We compare the performance of both versions using eight BAliBASE datasets. We also measure up the quality of the obtained solutions with the ones achieved by T-Coffee and ClustalW2, allowing us to observe that our algorithm reaches for better solutions in the majority of the datasets.
- Chapter 8: Structure Development in Electrospun FibresPublication . Mitchell, Geoffrey R.; Mohan, Saeed D.; Davis, Fred J.; Ahn, Kyung-Hwa; Al-Azab, Mohamed; El Hadi, Ahmed; Elliott, Delyth; Kariduraganavar, Mahadevappa Y.; Nagarajan, Anitha; Nazhipkyzy, Meruyert; Geoffrey R MitchellElectrospinning is a process which transforms polymer solutions in to solid fibres in ∼25 ms. In the case of an amorphous polymer, the resultant molecular organisation may not be so different from that of the solution. However, polymers are rich in different types of ordering processes and these may be encountered during electrospinning. In many areas of polymer processing, the processing procedures can have a significant impact on the structure and hence properties of the final product as the selection of the chemical configuration
- Dynamics and Biological ThresholdsPublication . Burroughs, N. J.; Ferreira, M.; Martins, J.; Oliveira, B. M. P. M.; Pinto, Alberto A.; Stollenwerk, N.Our main interest is to study the relevant biological thresholds that appear in epidemic and immunological dynamical models. We compute the thresholds, of the SIRI epidemic models, that determine the appearance of an epidemic disease. We compute the thresholds, of a Tregs immunological model, that determine the appearance of an immune response.
- Chapter 13. Future Perspectives on ElectrospinningPublication . Mitchell, Geoffrey R.; Sperrin, MalcolmAlthough the origins of electrospinning date back over 100 years, it is intense activity in the last 21 years which has led to considerable improvements in our knowledge of electrospinning and the broad-ranging opportunities for commercial application. The recent development of melt electrospinning provides a new additive manufacturing tool, providing routes to structures from nanometres to millimetres. Here, we consider where this rollercoaster of a topic is heading and its future prospects.
- Seismic behaviour analysis and retrofitting of a row buildingPublication . Barros, R.S.; Costa, A.; Varum, H.; Rodrigues, H.; Lourenço, P.B.; Vasconcelos, G.Rammed earth is one of the oldest building materials in the world, and it is present in Portugal with a particular focus in the South of the country. The mechanical properties and the structural behaviour of rammed earth constructions have been the subject of study of many researchers in the recent years. This study is part of a broader research on vernacular seismic culture in Portugal. Numerical analyses were carried out to assess the influence of different retrofitting solutions in the behaviour and seismic performance of a rammed earth building, representative of the vernacular heritage of Alentejo region. Understating the structural fragilities of this type of constructions allowed determining the most appropriate retrofitting solutions.