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Sao Paulo, Brazil

Nakano Td.e C.,Pontifical Catholic University of Campinas | Primi R.,Universidade Sao Francisco
The Spanish journal of psychology | Year: 2014

The purpose of the present study was to use the Partial Credit Model to study the factors of the Test of Creativity in Children and identify which characteristics of the creative person would be more effective to differentiate subjects according to their ability level. A sample of 1426 students from first to eighth grades answered the instrument. The Partial Credits model was used to estimate the ability of the subjects and item difficulties on a common scale for each of the four factors, indicating which items required a higher level of creativity to be scored and will differentiate the more creative individuals. The results demonstrated that the greater part of the characteristics showed good fit indices, with values between 0.80 and 1.30 both infit and outfit, indicating a response pattern consistent with the model. The characteristics of Unusual Perspective, Expression of Emotion and Originality have been identified as better predictors of creative performance because requires greater ability level (usually above two standard deviation). These results may be used in the future development of an instrument's reduced form or simplification of the current correction model. Source

Manzano T.P.,Universidade Sao Francisco
Pesquisa Brasileira em Odontopediatria e Clinica Integrada | Year: 2015

Objective: To compare the retention and preventive aspects of two different types of high-viscosity glass ionomer cements for newly erupted permanent molars, considering the cost-benefit ratio in relation to public health. Material and Methods: fifty-four children (5-12 years) with erupted molars were selected. One hundred and fifty-four teeth were sealed, 75 with Ketac Molar (KM) and 79 with Vitro Molar (VM). Before and after sealant application, photos were taken and condensation silicone casts were produced in order to better classify tooth eruption stage and to assess the sealant retention rate. Results: Fifty-six percent of teeth sealed with KM showed fully retained material (FR) after the 5-month follow-up period; 18.4 % showed KM in two-thirds of the occlusal surface (partial retention 2- PP2); 23.7 % in one third of the occlusal surface (partial retention 1-PP1); and only 1.3 % of sealed teeth showed total loss (TL). Among teeth sealed with VM, 28.8 % showed total retention (TR) of the sealant after 5 months; 7.5 % of sealants were present in two-thirds of the occlusal surface (PP2); 10% were present in one third of the occlusal surface (PP1), and 53.7 % showed total loss of the sealant (TL). The development of only one active white spot caries lesion after total sealant loss was observed in the VM group. Conclusion: Occlusal surfaces of newly erupted permanent molars sealed with high-viscosity KM glass ionomer cement exhibited higher retention when compared to VM after a 5-the development of carious lesions in sealed teeth was similar in both materials, which confirms the good clinical performance of glass ionomer cement sealants in the evaluation period, being highly significant when considering the cost-benefit ratio in relation to public health (KM cost is 4 times higher than VM cost). © 2015, Association of Support to Oral Health Research (APESB). All rights reserved. Source

Primi R.,Universidade Sao Francisco
Psychological assessment | Year: 2014

Ability testing has been criticized because understanding of the construct being assessed is incomplete and because the testing has not yet been satisfactorily improved in accordance with new knowledge from cognitive psychology. This article contributes to the solution of this problem through the application of item response theory and Susan Embretson's cognitive design system for test development in the development of a fluid intelligence scale. This study is based on findings from cognitive psychology; instead of focusing on the development of a test, it focuses on the definition of a variable for the creation of a criterion-referenced measure for fluid intelligence. A geometric matrix item bank with 26 items was analyzed with data from 2,797 undergraduate students. The main result was a criterion-referenced scale that was based on information from item features that were linked to cognitive components, such as storage capacity, goal management, and abstraction; this information was used to create the descriptions of selected levels of a fluid intelligence scale. The scale proposed that the levels of fluid intelligence range from the ability to solve problems containing a limited number of bits of information with obvious relationships through the ability to solve problems that involve abstract relationships under conditions that are confounded with an information overload and distraction by mixed noise. This scale can be employed in future research to provide interpretations for the measurements of the cognitive processes mastered and the types of difficulty experienced by examinees. PsycINFO Database Record (c) 2014 APA, all rights reserved. Source

Boldo J.L.,Brazilian Center for Research in Physics (CBPF) | Helayel-Neto J.A.,Brazilian Center for Research in Physics (CBPF) | de Moraes L.M.,Brazilian Center for Research in Physics (CBPF) | Sasaki C.A.G.,Universidade Sao Francisco | Vasquez Otoya V.J.,Federal University of Fluminense
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2010

Motivated by the interest raised by the problem of Lorenz-symmetry violating gauge theories in connection with gravity models, this contribution sets out to provide a general method to systematically study the excitation spectrum of gravity actions which include a Lorentz-symmetry breaking Chern-Simons-type action term for the spin connection. A complete set of spin-type operators is found which accounts for the (Lorentz) violation parameter to all orders and graviton propagators are worked out in a number of different situations. © 2010 Elsevier B.V. All rights reserved. Source

Fraga L.P.,University of Campinas | Carvalho P.O.,Universidade Sao Francisco | Macedo G.A.,University of Campinas
Food and Bioprocess Technology | Year: 2012

The production of cutinase by solid-state fermentation, using by-products such as wheat bran, rice bran, or soybean rind, was carried out using a Fusarium oxysporum strain. The fermentation process was optimized using a central composite design. The best conditions for cutinase production were achieved at 28-30 °C, with water added at 100-150% (w/w) after 72 h of incubation, in the range of 11. 7-15. 5 U/mL. In addition, the resolution of (R,S)-2-octanol and (R,S)-ibuprofen was performed to evaluate the enantioselectivity of the preparations of cutinase. The cutinase produced from the soybean rind attained higher yields and enantioselectivity in the resolution of (R,S)-2-octanol with octanoic acid in isooctane (E = 9. 6). For the (R,S)-ibuprofen resolution, the cutinase produced from rice bran reached the best yields (E = 5. 6). This work demonstrated that the enzymes can be produced from different media, such as from by-products or residues rich in carbon sources that do not necessarily present the same biochemical properties, which may be useful for industrial applications. © 2009 Springer Science + Business Media, LLC. Source

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