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2016
Santos, F., C. Cismasiu, R. Perdigão, V. Bernardo, J. Sampayo, P. Candeias, A. Costa, A. Carvalho, and L. Guerreiro COMPORTAMENTO SÍSMICO DE LIGAÇÕES EM PASSADIÇOS PRÉ-FABRICADOS. 10º Congresso Nacional de Sismologia e Engenharia Sísmica. Ponta Delgada, 2016.artigosismica2016_submetido.docx
Lopes, Rui Amaral, João Martins, Daniel Aelenei, and Celson Pantoja Lima. "A cooperative net zero energy community to improve load matching." Renewable Energy. 93.August (2016): 1-13. AbstractWebsite

The work reported here addresses load matching improvement in Net Zero Energy Buildings (Net-ZEBs). The related relevant literature shows that currently research work is mainly focused on improving the load matching of individual buildings. In this paper the concept of a Cooperative Net Zero Energy Community (CNet-ZEC) is introduced, extending discussion to the enhancement of load matching at a wider community level. Both building and community levels are compared in order to assess the work proposed here, through the analysis of three distinct scenarios where five Net-ZEBs work individually or in community.

The results presented here were obtained through a detailed simulation based on 1-min resolution stochastic load profiles and recorded weather data. The results indicate that over the period of a year the CNet-ZEC has the potential to increase the electrical demand covered by onsite electricity generation up to 21% and the on-site generation that is used by the building up to 15%. The following elements are considered by the CNet-ZEC in order to produce those results: (i) demand heterogeneity of the buildings integrating the community; (ii) the higher number of controllable devices; and (iii) the potential higher amount of energy available to satisfy the community demand.

Brás, C., G. Eichfelder, and J. Júdice. "Copositivity tests based on the Linear Complementarity Problem." Computational Optimization and Applications. 63.2 (2016): 461-493. AbstractWebsite

We present copositivity tests based on new necessary and sufficient conditions which require the solution of linear complementarity problems (LCP). We propose methodologies involving Lemke’s method, an enumerative algorithm and a linear mixed-integer programming formulation to solve the required LCPs. Moreover, we discuss a new necessary condition for (strict) copositivity based on solving a linear program, which can be used as a preprocessing step. The algorithms with these three different variants are thoroughly applied to test matrices from the literature and to max-clique instances with matrices of order up to 496×496. We compare our procedures with three other copositivity tests from the literature as well as with a general global optimization solver. The numerical results are very promising and equally good and in many cases better than the results reported elsewhere.

Hansen, Bitten Bolvig, Jesper Milàn, Lars B. Clemmensen, Jan Schulz Adolfssen, Eliza Jarl Estrup, Nicole Klein, Octávio Mateus, and Oliver Wings. "Coprolites from the Late Triassic Kap Stewart Formation, Jameson Land, East Greenland: morphology, classification and prey inclusions." Geological Society, London, Special Publications. 434.1 (2016): 49-69. Abstracthansen_et_al_2015_coprolites_from_the_late_triassic_kap_stewart_formation_jameson_land_east_greenland.pdfWebsite

A large collection of vertebrate coprolites from black lacustrine shales in the Late Triassic (Rhaetian–Sinemurian) Kap Stewart Formation, East Greenland is examined with regard to internal and external morphology, prey inclusions, and possible relationships to the contemporary vertebrate fauna. A number of the coprolites were mineralogically examined by X-ray diffraction (XRD), showing the primary mineral composition to be apatite, clay minerals, carbonates and, occasionally, quartz in the form of secondary mineral grains. The coprolite assemblage shows multiple sizes and morphotypes of coprolites, and different types of prey inclusions, demonstrating that the coprolite assemblage originates from a variety of different producers.Supplementary material: A description of the size, shape, structure, texture, contents and preservation of the 328 specimens is available at https://doi.org/10.6084/m9.figshare.c.2134335

Tschopp, Emanuel, and Octávio Mateus. "Case 3700 Diplodocus Marsh, 1878 (Dinosauria, Sauropoda): Proposed designation of D. carnegii Hatcher, 1901 as the type species." Bulletin of Zoological Nomenclature. 73 (2016): 17-24. Abstract

The purpose of this application, under Articles 78.1 and 81.1 of the Code, is to replace Diplodocus longus Marsh, 1878 as the type species of the sauropod dinosaur genus Diplodocus by the much better represented D. carnegii Hatcher, 1901, due to the undiagnosable state of the holotype of D. longus (YPM 1920, a partial tail and a chevron). The holotype of D. carnegii, CM 84, is a well-preserved and mostly articulated specimen. Casts of it are on display in various museums around the world, and the species has generally been used as the main reference for studies of comparative anatomy or phylogeny of the genus. Both species are known from the Upper Jurassic Morrison Formation of the western United States. The genus Diplodocus is the basis for the family-level taxa diplodocinae Marsh, 1884, diplodocidae Marsh, 1884, diplodocimorpha Marsh, 1884 (Calvo & Salgado, 1995) and diplodocoidea Marsh, 1884 (Upchurch, 1995). It is also a specifier of at least 10 phylogenetic clades. With the replacement of D. longus by D. carnegii as type species, Diplodocus could be preserved as a taxonomic name with generally accepted content. Taxonomic stability of the entire clade diplodocoidea, and the proposed definitions of several clades within Sauropoda, could be maintained.

c Nunes, D.a, Calmeiro Nandy Pinto Pimentel Barquinha Carvalho Walmsley Fortunato Martins T. R. a S. "Charging effects and surface potential variations of Cu-based nanowires." Thin Solid Films. 601 (2016): 45-53. AbstractWebsite

The present work reports charging effects and surface potential variations in pure copper, cuprous oxide and cupric oxide nanowires observed by electrostatic force microscopy (EFM) and Kelvin probe force microscopy (KPFM). The copper nanowires were produced by wet synthesis, oxidation into cuprous oxide nanowires was achieved through microwave irradiation and cupric oxide nanowires were obtained via furnace annealing in atmospheric conditions. Structural characterization of the nanowires was carried out by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. During the EFM experiments the electrostatic field of the positive probe charged negatively the Cu-based nanowires, which in turn polarized the SiO2 dielectric substrate. Both the probe/nanowire capacitance as well as the substrate polarization increased with the applied bias. Cu2O and CuO nanowires behaved distinctively during the EFM measurements in accordance with their band gap energies. The work functions (WF) of the Cu-based nanowires, obtained by KPFM measurements, yielded WFCuO > WFCu > WFCu2O. © 2015 Elsevier B.V.

Soares, Paula I. P., Ana Isabel Sousa, Jorge Carvalho Silva, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Chitosan-based nanoparticles as drug delivery systems for doxorubicin: Optimization and modelling." Carbohydrate polymers. 147 (2016): 304-312. Abstract
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André, Jorge, João Araújo, and Peter J. Cameron. "The classification of partition homogeneous groups with applications to semigroup theory." J. Algebra. 452 (2016): 288-310. AbstractWebsite
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André, Jorge, João Araújo, and Peter J. Cameron. "The classification of partition homogeneous groups with applications to semigroup theory." J. Algebra. 452 (2016): 288-310. AbstractWebsite
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Alagador, D., J. O. Cerdeira, and M. B. Araújo. "Climate change, species range shifts and dispersal corridors: an evaluation of spatial conservation models." Methods in Ecology and Evolution. 7 (2016): 853-866. Abstract
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Moldovan, O.a, Castro-Carranza Cerdeira Estrada Barquinha Martins Fortunato Miljakovic Iñiguez A. b A. c. "A compact model and direct parameters extraction techniques For amorphous gallium-indium-zinc-oxide thin film transistors." Solid-State Electronics. 126 (2016): 81-86. AbstractWebsite

An advanced compact and analytical drain current model for the amorphous gallium indium zinc oxide (GIZO) thin film transistors (TFTs) is proposed. Its output saturation behavior is improved by introducing a new asymptotic function. All model parameters were extracted using an adapted version of the Universal Method and Extraction Procedure (UMEM) applied for the first time for GIZO devices in a simple and direct form. We demonstrate the correct behavior of the model for negative VDS, a necessity for a complete compact model. In this way we prove the symmetry of source and drain electrodes and extend the range of applications to both signs of VDS. The model, in Verilog-A code, is implemented in Electronic Design Automation (EDA) tools, such as Smart Spice, and compared with measurements of TFTs. It describes accurately the experimental characteristics in the whole range of GIZO TFTs operation, making the model suitable for the design of circuits using these types of devices. © 2016 Elsevier Ltd

Souza, Eric, Silvia Abrahão, Ana Moreira, João Araújo, and Emilio Insfrán. "Comparing Value-Driven Methods: an Experiment Design." Proceedings of the Second International Workshop on Human Factors in Modeling co-located with {ACM/IEEE} 19th International Conference on Model Driven Engineering Languages and Systems {(MODELS} 2016), Saint Malo, France, October 4, 2016. 2016. 19-26. Abstract
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Cavalheiro, D., F. Moll, and S. Valtchev. "A comparison of TFET rectifiers for RF energy harvesting applications." Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016 (2016): 14-19. Abstract
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Amaral, Paula, and Tiago Cardal Pais. "Compromise ratio with weighting functions in a Tabu Search multi-criteria approach to examination timetabling." Computers & Operations Research. 72 (2016): 160-174. Abstract
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Conceptual Modeling - 35th International Conference, {ER} 2016, Gifu, Japan, November 14-17, 2016, Proceedings. Eds. Isabelle Comyn -, Katsumi Tanaka, Il -, Shuichiro Yamamoto, and Motoshi Saeki. Vol. 9974., 2016. Abstract
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Marques, Susana CS, Paula I. P. Soares, Coro Echeverria, Maria H. Godinho, and João P. Borges. "Confinement of thermoresponsive microgels into fibres via colloidal electrospinning: experimental and statistical analysis." RSC Advances. 6.80 (2016): 76370-76380. Abstract
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Marques, Susana CS, Paula I. P. Soares, Coro Echeverria, Maria H. Godinho, and João P. Borges. "Confinement of thermoresponsive microgels into fibres via colloidal electrospinning: experimental and statistical analysis." RSC Advances. 6.80 (2016): 76370-76380. Abstract
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Dias, F. S., D. L. Miller, T. A. Marques, J. Marcelino, M. C. Caldeira, J. Orestes Cerdeira, and M. N. Bugalho. "Conservation zones promote oak regeneration and shrub diversity in certified Mediterranean oak woodlands." Biological Conservation. 195 (2016): 226-234. Abstract
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Chaves, M. M., J. M. Costa, O. Zarrouk, C. Pinheiro, C. M. Lopes, and JS Pereira. "Controlling stomatal aperture in semi-arid regions-The dilemma of saving water or being cool?" Plant Science. 251 (2016): 54-64. AbstractWebsite
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2015
Lessa, Ivan, Glauco Carneiro, Miguel Monteiro, and Fernando Brito e Abreu. "A Concern Visualization Approach for Improving MATLAB and Octave Program Comprehension." 29th Brazilian Symposium on Software Engineering. Belo Horizonte, Brasil: CPS, 2015. sbes2015camera_ready.pdf
Alves, André, Fernando P. Birra, and João M. Lourenço. "Como separar o trigo do joio? Ou: Como selecionar a melhor fotografia de um conjunto de fotografias semelhantes." Proceedings of INForum Simpósio de Informática. INForum 2015. Covilhã, Portugal 2015. Abstractinforum15-photo.pdf

O advento da fotografia digital está na base de uma clara mudança de paradigma no processo de gestão da fotografia por amadores. Porque tirar mais uma fotografia agora não representa qualquer custo adicional, é frequente tirarem-se múltiplas fotografias ao mesmo sujeito, na expectativa de que uma delas corresponda aos padrões de qualidade desejados, em termos de iluminação, foco e enquadramento. Assumindo que a questão do enquadramento se resolve facilmente recorrendo ao recorte (crop) da fotografia, tem-se ainda assim que selecionar qual das várias fotografias bem enquadradas, tecnicamente parecidas em termos de iluminação e foco, vamos guardar (e por oposição quais vamos descartar). A escolha da melhor fotografia com base na observação visual em ecrã de computador é um processo muito pouco preciso e, portanto, gerador de sensações de insegurança que resultam, muitas vezes, na opção de não descartar nenhuma das várias fotografias semelhantes. Neste artigo propomo-nos endereçar a questão de como ajudar um fotógrafo amador a selecionar a melhor fotografia de um conjunto de fotografias semelhantes em termos técnicos (foco e iluminação) e de enquadramento. Este processo é baseado num workflow suportado por um pacote de software, que com alguma ajuda do utilizador permite ordenar um conjunto de fotografias semelhantes, sendo assim possível escolher aquela que melhor corresponde às expectativas e dando segurança e conforto na eventual eliminação das restantes.

Marzola, M., O. Mateus, AS Schulp, LL Jacobs, M. J. Polcyn, V. Pervov, AO Goncalves, and ML Morais. "Comparative anatomy and systematics of Cretaceous mammal tracks of Angola." 13th Annual Meeting of the European Association of Vertebrate Palaeontologists - EAVP 2015. Opole, Poland: European Association of Vertebrate Palaeontologists, 2015. marzola_et_al_2015_catoca_tracks_eavp.pdf
Marzola, M., O. Mateus, AS Schulp, LL Jacobs, M. J. Polcyn, V. Pervov, AO Goncalves, and ML Morais. "Comparative anatomy and systematics of Cretaceous mammal tracks of Angola." 13th Annual Meeting of the European Association of Vertebrate Palaeontologists - EAVP 2015. Opole, Poland: European Association of Vertebrate Palaeontologists, 2015. Abstract
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