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Itapetininga, Brazil

Craveirinha R.,University of Coimbra | Santos L.,University Estadual da Bahia | Roque L.,University of Coimbra
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

This paper describes an alternative approach for videogame procedural content generation focused on providing authors direct control on what gameplay ensues from the generated content. An architecture is proposed that allows designers to define, beforehand, target gameplay indicators, and then generates content for an existing base-design that achieves those same indicators in actual gameplay sessions with human players. Besides providing a description of this architecture, a trial intent on giving evidence of the approach's feasibility is presented. This experiment used an altered version of 'InfiniteMario Bros.' level generator, built to evolve design parameters so as to achieve 3 target gameplay indicators. Employing a Genetic Algorithm in generation of new parameter values, and using 25 players to test the end results, the platform was able to generate parameters that achieved, with precision, the values for those indicators. This result provides evidence of the approach's feasibility, hinting at its potential use for real-life design processes. © Springer International Publishing 2013. Source

Azoubel P.M.,Federal University of Pernambuco | da Rocha Amorim M.,University Estadual da Bahia | Oliveira S.S.B.,University of Pernambuco | Maciel M.I.S.,University of Pernambuco | Rodrigues J.D.,Sao Paulo State University
Food Engineering Reviews | Year: 2015

The effect of ultrasound and osmotic dehydration pretreatments on papaya drying kinetics was investigated. The ultrasound pretreatment was carried out in an ultrasonic bath at 30 °C. The osmotic pretreatment in sucrose solution was carried out in an incubator at 34 °C and agitation of 80 rpm for 210 min. The drying process was conducted in a fixed bed dryer at 70 °C. Experimental data were fitted successfully using the Page model for dried fresh and pretreated fruits, with coefficient of determination greater than 0.9992 and average relative error lower that 14.4 %. The diffusional model was used to describe the moisture transfer, and the effective water diffusivity was identified in the order of 10−9 m2 s−1. It was found that drying rates of osmosed fruits were the lowest due to the presence of infused solutes, while the ultrasound pretreatment contributed to faster drying rates. Evaluation of the dried fruit was performed by means of total carotenoids retention. Ultrasound treatments in distilled water prior to air-drying gave rise to dried papayas with retention of carotenoids in the range 30.4–39.8 % and the ultrasonic-assisted osmotic dehydration of papayas showed carotenoids retention values up to 64.9 %, whereas the dried fruit without pretreatment showed carotenoids retention lower than 24 %. © 2015, Springer Science+Business Media New York. Source

Ramos S.C.,National Institute for Space Research | Ramos S.C.,University Estadual da Bahia | Vasconcelos G.,Brazilian Technological Institute of Aeronautics | Antunes E.F.,National Institute for Space Research | And 5 more authors.
Diamond and Related Materials | Year: 2011

An easy and fast method to produce microchannels on the vertically aligned multiwalled carbon nanotube (VACNT) surfaces is described. Alternating superhydrophilic and superhydrophobic channels were built on VACNT films, using oxygen plasma functionalization and CO2 laser treatment, respectively. A combined effect of wettability and capillary forces promotes an effective spreading, and confinement of water microdroplets on the superhydrophilic channels. © 2011 Elsevier B.V. All rights reserved. Source

Pinheiro U.,Federal University of Pernambuco | Docio L.,University Estadual da Bahia | Nicacio G.,Federal University of Pernambuco | Hajdu E.,Federal University of Rio de Janeiro
Journal of Natural History | Year: 2013

This paper expands the known geographic distribution of Corvospongilla seckti Bonetto and Ezcurra de Drago, 1966 to another two Brazilian hydrographic basins, the East Atlantic and São Francisco basins. Simultaneously, it reassesses the status of C. seckti and Corvospongilla volkmeri De Rosa Barbosa, 1988. Re-examination of the holotype of C. volkmeri revealed no remarkable diagnostic features to differentiate it from C. seckti, given our present knowledge on the variability of the latter. Accordingly, C. volkmeri is considered a junior synonym of C. seckti. © 2013 © Taylor & Francis. Source

De Lima L.M.,University of Rio Verde | Pozza E.A.,Federal University of Lavras | Da Silva Santos F.,University Estadual da Bahia
Journal of Phytopathology | Year: 2012

To study the chemical composition of coffee beans from coffee cherries infected by brown eye spot, two experiments were conducted with coffee cherries from Catuaí Amarelo and Acaiá Cerrado farms, in the full physiological maturity stage. The coffee cherries were harvested manually, and 20litres of cherries without visible symptoms of brown eye spot (healthy coffee cherries) and 20l of cherries with visible symptoms of the disease (diseased coffee cherries) were individually separated. After separation, the cherries were mixed in five different proportions to form the treatments: 0, 25, 50, 75 and 100% of diseased coffee cherries to 100, 75, 50, 25 and 0% of healthy coffee cherries. The experimental design was performed in randomized blocks, with each 8l of coffee cherries being considered an experimental unit. After drying (humidity 12%), the chemical characteristics were analysed. Polyphenols, potassium leachate and electrical conductivity had a linear increase with the rising of the proportion of diseased coffee cherries. Total sugars, soluble solids and pH decreased linearly with the rising of the proportion of diseased coffee cherries. © 2012 Blackwell Verlag GmbH. Source

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