Cardoso, Tiago, and Luis M. Camarinha-Matos. "
ProActive Service Entity Framework: Improving Service Selection Chances within Large Senior Professional Virtual Community Scenario."
Doctoral Conference on Computing, Electrical and Industrial Systems. Springer, Berlin, Heidelberg, 2011. 21-29.
AbstractWithin a Collaborative Business Ecosystem context, as the network evolves, the competition between members increases and, as a consequence, members face the challenge to improve the chances their services have to be selected. On the other hand, the distance between Business Services and “Computational Services” is still a bottleneck for the automation of service provision. This paper extends the Pro-Active Service Entity Framework, proposing a mechanism to improve the service selection chances, based on the refinement of a Quality of Service concept for this context, and introduces a new class of actors for the framework – the intermediaries, needed to shorten the distance between Business and Computational perspectives.
Azevedo, S. G., and H. Carvalho. "
RFID Technology in the Fashion Supply Chain: An Exploratory Analysis."
Fashion Supply Chain Management: Industry and Business Analysis. Business Science Reference (an imprint of IGI Global), 2011. 302-326.
AbstractRadio Frequency Identification (RFID) is a new technology that has received considerable attention from academics and practitioners due to its large scope of application, advantages and potentialities. This chapter aims to highlight the potentialities associated with RFID in fast moving Fashion Supply Chain Management (FSCM). The research emphasizes the technological contribution to the Fashion Supply Chain (FSC) such as speed up logistics activities, increased quality, reduced prices, and more responsive improvements for customer satisfaction. The chapter reviews the RFID technology, presents the benefits, disadvantages, and barriers associated with it. To explore the deployment of the RFID technology in the Fashion Supply Chain (FSC), a case study investigation of companies in different FSCM nodes was carried out. A cross-case analysis it is also presented to achieve a deeper understanding about this technology in a fast moving FSCM context
Carvalho, H., M. Maleki, V. Trajkovski, and V. Cruz-Machado. "
Supply chain disturbances and resilience strategies: a secondary data study."
Proceedings of The Fifth International Conference on Management Science and Engineering Management. Macau, China 2011. 3-9.
AbstractThis paper is a review over a variety of events which lead to disruption conditions in supply chains and identifies correspondent resilient strategies for each condition. The paper objective is to make a link between the problems created by events and strategies that managers can use to avoid or mitigate the negative aspects of those problems and improve post- event recovery. To attain the paper objectives it was use archived media news to collect empirical data about disturbances (events), their negative effects (problems), and resilience strategies. In the data collection phase, the aim was to keep diversities and be comprehensive. Using empirical evidences from the sample is developed a graph to show the links between supply chain disturbances, problems and resilience. This research provides supply chain managers with some alternative strategies to opt for the best available decision, improving the post-event management process.
Carvalho, H., A. P. Barroso, V. H. Machado, S. G. Azevedo, and V. Cruz-Machado. "
Supply chain resilience: a simulation study."
Annals of DAAAM for 2011 & Proceedings of the 22nd International DAAAM Symposium. Ed. Katalinc} {Branko. Viena, Austria: DAAAM International, 2011. 1611-1612.
AbstractThis paper aims to analyze the supply chain behavior when subject to disturbances using a simulation-based approach. The disturbance explored in this study is the transportation interruption between two suppliers in the automotive supply chain. The performance of the different supply chain entities is used to analyze supply chain design scenarios. The analysis of the outputs simulation study shows that even when a redundancy strategy is used, the negative effects of a disturbance are spread along the supply chain, but the resilience of supply chain entities is enhanced
Francisco, Ricardo, Pedro Pereira, and João Martins. "
Sustainable Housing Techno-Economic Feasibility Application."
Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2011. Ed. Luis Camarinha-Matos. Vol. 349. IFIP Advances in Information and Communication Technology, 349. Costa de Caparica - Portugal: Springer Boston, 2011. 445-454.
AbstractThe high prices currently achieved in the acquisition of non-renewable energy for electricity production and the low levels of energy efficiency in the housing sector are the national situation, which leads the Portuguese government to encourage the acquisition, the installation and the use of technologies which exploit indigenous and renewable energy. This study presents an application that was developed in order to help the citizen in his decision to invest in renewable technologies in their homes. The application is able to elaborate an economic analysis based on the selected type of renewable technology, providing the user with the knowledge of benefits and the annual costs involved in the system that he selected. This tool aims at facilitating the interaction of any user with such technologies and it can be used as a helpful tool to support the decision of investment in such systems.
Martins, Rui M. S., F. Beckmann, R. Castanhinha, R. Araújo, O. Mateus, and P. K. Pranzas Tomographic techniques for the study of exceptionally preserved dinosaur and crocodile fossils from the mesozoic of Portugal. VII Encontro Nacional de Biologia Evolutiva, Coimbra, 21 Dezembro 2011., 2011.
AbstractPortugal is ranked within the ten countries with more dinosaur taxa and the Lourinhã Formation is known
by the Late Jurassic findings of dinosaurs and other fossils. Often, studies of the external morphological
characteristics of the fossils are not sufficient and, observations of internal structures, using non-
destructive techniques, are required. The fossils here presented belong to the Museum da Lourinhã
(Portugal) and comprise a lower jaw of a basal crocodilian (possibly a Tomistomidae), eggshells and
several vertebrae from the exceptionally well preserved in ovo remains of Late Jurassic theropod dinosaur
Lourinhanosaurus. Neutron Tomography (NT) experiments with this material has been carried out at the
Geesthacht Neutron Facility in Germany. Additionally, eggshell fragments and several vertebrae have
been studied by Synchrotron-Radiation based Micro-Computed Tomography (SRμCT) at the HARWI II and
BW2 beamlines, respectively. These beamlines are operated by the Helmholtz-Zentrum Geesthacht at the
storage ring DORIS III at the Deutsches Elektronen–Synchrotron DESY in Hamburg, Germany. In both cases
(NT and SRμCT) complete 3D recordings have been obtained using a non-destructive procedure. The high-
quality tomographic datasets can be effectively studied through interactive digital visualization. Hence,
these visualization methods provide precious information about the 3D internal micro morphology of
fossils, like the network of the eggshell pores, often invisible in more traditional techniques, and provide a
direct window into the evolutionary history of organisms.
Cunha, Jácome, Joost Visser, Tiago Alves, and João Saraiva. "
Type-Safe Evolution of Spreadsheets."
Proceedings of the 14th International Conference Fundamental Approaches to Software Engineering (FASE '11): Part of the Joint European Conferences on Theory and Practice of Software (ETAPS '11). Eds. Dimitra Giannakopoulou, and Fernando Orejas. Vol. 6603. Lecture Notes in Computer Science, 6603. Springer, 2011. 186-201.
AbstractSpreadsheets are notoriously error-prone. To help avoid the introduction of errors when changing spreadsheets, models that capture the structure and interdependencies of spreadsheets at a conceptual level have been proposed. Thus, spreadsheet evolution can be made safe within the confines of a model. As in any other model/instance setting, evolution may not only require changes at the instance level but also at the model level. When model changes are required, the safety of instance evolution can not be guarded by the model alone. We have designed an appropriate representation of spreadsheet models, including the fundamental notions of formulæand references. For these models and their instances, we have designed coupled transformation rules that cover specific spreadsheet evolution steps, such as the insertion of columns in all occurrences of a repeated block of cells. Each model-level transformation rule is coupled with instance level migration rules from the source to the target model and vice versa. These coupled rules can be composed to create compound transformations at the model level inducing compound transformations at the instance level. This approach guarantees safe evolution of spreadsheets even when models change.
Afonso, Marcos, Pedro Pereira, and João Martins. "
Weather Monitoring System for Renewable Energy Power Production Correlation."
Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2011. Ed. Luis Camarinha-Matos. Vol. 349. IFIP Advances in Information and Communication Technology, 349. Costa de Caparica - Portugal: Springer Boston, 2011. 481-490.
AbstractThis work describes the development of a system designed for renewable power generation integration. It continuously acquires wind, solar and temperature data, which is automatically correlated with energy parameters, obtained from renewable energy systems. The developed system was installed in an urban building equipped with photovoltaic cells and wind renewable generation. To validate the developed application, it was analyzed data of a wind generator and a set of photovoltaic panels, installed near to the weather station. The developed application allows, in addition to the acquisition of weather and energy data, their continuous monitoring and correlation through a graphical user interface, providing a friendly interactivity with the user.
Folgosa, Filipe, Cristina M. Cordas, Joana A. Santos, Alice S. Pereira, Jose J. G. Moura, Pedro António Brito Tavares, and Isabel Moura. "
{New spectroscopic and electrochemical insights on a class I superoxide reductase: Evidence for an intramolecular electron transfer pathway.}."
Biochemical Journal (2011).
AbstractSuperoxide reductases are enzymes involved in bacterial resistance to reactive oxygen species, catalyzing the reduction of superoxide anions to hydrogen peroxide. So far three structural classes have been identified. Class I enzymes have two iron-center containing domains. Most studies have been focused on the catalytic iron site (center II), but the role of center I is yet poorly understood. The possible roles of this iron site were approached by an integrated study using both classical and fast kinetics measurements as well as direct electrochemistry. A new heterometallic form of the protein with a zinc-substituted center I, maintaining the iron active site center II was obtained, resulting in a stable derivative useful for comparison with the native all-iron from. Second order rate constants for the electron transfer between reduced rubredoxin and the different SOR forms were determined to be 2.8x107 (M-1s-1) and 1.3x106 (M-1s-1) for SORFe(IIII)-Fe(II) and for SORFe(IIII)-Fe(III) forms respectively, and 3.2x106 (M-1s-1) for the SORZn(II)-Fe(III) form. The results obtained seem to indicate that center I transfers electrons from the putative physiologic donor, rubredoxin, to the catalytic active iron site (intramolecular process). In addition, electrochemical results show that conformational changes are associated to the redox state of center I, which may enable a faster catalytic response towards superoxide anion. The apparent rate constants calculated for the SOR-mediated electron transfer also support this observation.