Universidade Positivo

About: Universidade Positivo is a education organization based out in Curitiba, Brazil. It is known for research contribution in the topics: Population & Biodiversity. The organization has 1290 authors who have published 1237 publications receiving 9335 citations. The organization is also known as: Positive University.

Degree of conversion of a flowable composite light-activated through ceramics of different shades and thicknesses

Abstract: The cementation of thin ceramic veneers employing fluid light-activated resin-based materials is a common procedure in the dental practice. Aim: To evaluate the influence of ceramic thickness and shade on the degree of conversion (DC) of a flowable light-activated material. Methods: flowable resin composite (Tetric N-Flow - shade A1) was light-activated through ceramic discs of two shades (IPS Classic - A1 and A3) in three thicknesses (0.5, 0.7 and 1.0 mm). For control, the resin composite was light-activated without ceramic interposition. DC was evaluated by FTIR (n=5). Data were analyzed by one-way ANOVA and Dunnett's T3 test (α=0.05). Results: Statistically significant differences between groups were observed (p<0.001). Control group (without the interposition of ceramic) showed the highest mean for DC (71.9± 1.7). Considering the interposed ceramic disc groups, the highest DC values were obtained when 0.5 and 0.7 mm A1 ceramics were used (64.6±1.2 and 64.4 5.0, respectively) and the lowest DC values were obtained for 0.7 and 1 mm A3 ceramics (61.74±0.9 and 62.0±1.9, respectively). Conclusions: No flowable resin composite group with interposing ceramics reached a DC similar to the control group.

Farm systems, soil chemical properties, and clay dispersion in watershed áreas

Abstract: The objective of this work was to evaluate the effect of different farm systems on clay dispersion and its relationship with soil chemical properties and the no-tillage system participatory quality index (IQP), in watershed areas in the west of the state of Parana, Brazil. The farm systems evaluated were: no-tillage; no-tillage with crop succession; no-tillage with soil disturbance; and conventional system. In addition, the farm systems were evaluated for their IQP. Soil samples were collected at 0.0-0.20-m soil depth, in 40 agricultural areas and in 6 native forests considered as references. The degree of clay dispersion, total organic carbon, pH (CaCl2), exchangeable potassium (K+), available phosphorus (P), exchangeable calcium and magnesium (Ca2++Mg2+), and potential acidity (H+Al3+) were determined. A linear multiple regression model was fitted by the method of least squares. The averages of clay dispersion degree per watershed were compared at 5% probability. The farm systems were compared by Scott-Knott’s test. Soil chemical properties showed a higher influence on clay dispersion than the different farm systems assessed. The no-tillage system alone showed the highest content of organic carbon, which was similar to those of the native areas. The conventional system and the no-tillage system with soil disturbance showed a lower IQP and a higher degree of clay dispersion than the areas with the no-tillage system alone. The IQP allows distinguishing the conventional system from the no-tillage system.

Dinâmica da cocriação de valor no setor da saúde: um estudo de casos múltiplos no mercado paulista

Abstract: Nos ultimos 10 anos, os consumidores tem passado por mudancas em seus desejos e atitudes sendo que estas posturas, faz com que as organizacoes voltem sua atencao para a perspectiva do consumidor, reconfigurando os seus papeis e responsabilidades na cadeia de valor. A presente pesquisa tem como objetivo analisar as interacoes existentes entre os stakeholders do setor da saude no processo de cocriacao de valor. Como referencial teorico utilizou-se a cocriacao de valor (MAGRETTA; STONE, 2002, SRIVASTAVA; SHERVANI; FAHEY, 1998, VARGO; LUSCH, 2008). A pesquisa caracteriza-se como exploratoria e descritiva, desenvolvida por meio de um estudo de caso multiplo. Coletaram-se dados secundarios (relatorios disponibilizados pelas empresas) e primarios (entrevistas semiestruturada com executivos da alta administracao e da gerencia operacional). Conclui-se que as interacoes ocorrem, principalmente, entre as operadoras, as empresas contratantes, as corretoras e os prestadores de servicos, atraves de acoes que acontecem antes, durante e depois da utilizacao do beneficio pelo usuario final.

O potencial da frankfurtianidade de Habermas em estudos organizacionais

Abstract: This essay reflects on the convergence between Jurgen Habermas’ work and the theoretical framework put forward by the Institute of Social Research in Frankfurt, arguing in favor of the characteristics of the Frankfurt school in Habermas and pointing out research possibilities in the field of Organizational Studies (OS). We discuss the essential theoretical aspects of the work by Horkheimer (1975) “Traditional and Critical Theory,” and produce a critique on the use of generational chronology as the main criterion for understanding the intellectual movement of the Frankfurt School. The methodology is based on the critique of the interpretation using the philosophical hermeneutics (RICOEUR, 1990) and observes the propositional nature of an interpretation offered in theoretical essays (MENEGUETTI, 2011). To support the provocative proposition of this work, we establish a dialogue with authors such as Bottomore (2001), Freitag (2004), Nobre (2004), and Melo (2013)) discussing a non-generational characterization of the Frankfurt School’s members and the proximity of Habermas in relation to the pioneer works on the Critical Theory. We believe that (i) the re-reading of the emancipatory purpose (HABERMAS, 2002); (ii) the deconstruction of the impartiality of the scientific knowledge (HABERMAS, 1987); (iii) and the incorporation of the philosophy of language into the Frankfurtian social criticism (HABERMAS, 2012) are important contributions of Habermas to the Frankfurt’s critical theory. As for a proposal for the field of organizational studies, this esseay concludes that recognizing Habermas as a Critical Theory scholar of the Frankfurt School may constitute a new research agenda for the field. The contribution of this essay lies in helping researchers in the field of Organizational Studies to understand Habermas’ work differently and not as a non-critical or utopian production. In this perspective, it is clear that Habermas’ intellectual production is politically engaged in contemporary social problems, which is a dimension neglected by the researchers of the field of Organizational Studies in Brazil.