44,592 research outputs found
Análise da "cola" no processo ensino-aprendizagem
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.A presente pesquisa aborda o fenômeno "cola" no ensino superior e suas implicações nos procedimentos pedagógicos, tomando como referência para análise a atividade acadêmica no curso de Psicologia de um Centro Universitário de Belo Horizonte, Minas Gerais. Os comportamentos de alunos que "colam" neste espaço, em situações formais de avaliação da aprendizagem, foram observados porque se considera que a transmissão e a apropriação do conhecimento, como produto sócio-histórico, são marcados pela particularidade dos sujeitos envolvidos nesse processo. A partir da perspectiva sociointeracionista e considerando a dimensão ética das relações humanas, trabalhou-se com conceitos relacionados à área de educação presencial, à de educação a distância e à Psicologia, que serviram de guia para o estudo. Utilizando-se de questionário estruturado, o enfoque priorizou as questões referentes a ocorrência do fenômeno "cola" e associações possíveis à relação professor-aluno em situações de ensino-aprendizagem. Os dados apresentam a posição dos entrevistados frente ao fenômeno, permitindo uma análise sobre as mudanças subjetivas ao longo da vida escolar e acadêmica dos mesmos, bem como uma aproximação a outros pesquisadores do campo da avaliação educacional
Explicit Evidence on an Implicit Contract
No full textWe offer the first direct evidence of an implicit contract in a goods market. The evidence we offer comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a substantial amount of written evidence of its implicit contract with its consumers—a very explicit form of an implicit contract. In general, observing implicit contracts directly is difficult because of their implicit nature. In the case of Coca-Cola, however, we are able to document the Company not only saying that it had an important implicit contract with its consumers, but also acting on it. This study makes an additional and unique contribution by exploring quality as a margin of adjustment available to Coca-Cola. We present evidence that the implicit contract included a promise not only of a constant nominal price but also a constant quality. We document the dedication to a 6.5oz serving of the "Secret Formula." Indeed, during a period of over 70 years, we find evidence of only a single case of true quality change. By studying the margin of adjustment the Coca-Cola Company chose in response to changes in market conditions, we demonstrate that the perceived costs of breaking the implicit contract were large. In addition, we are able to offer one piece of direct evidence on the magnitude of these costs by studying the events surrounding the failed introduction of the New Coke in 1985.Implicit Contract, Explicit Contract, Invisible Handshake, Customer Market, Long-Term Relationship, Price Rigidity, Coca-Cola, Nickel Coke
Explicit Evidence on an Implicit Contract
No full textWe offer the first direct evidence of an implicit contract in a goods market. The evidence we offer comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a substantial amount of written evidence of its implicit contract with its consumers—a very explicit form of an implicit contract. The contract represented the promise of a five cent (nominal) price and adherence to the “Secret Formula”. In general, the implicit nature of such contracts makes observation difficult. To overcome this difficulty, we adopt a narrative approach. Based on the analysis of a large number of historical documents obtained from the Coca-Cola Archives and other sources, we offer evidence of the Coca-Cola Company both acknowledging and acting on this implicit contract. We also make another unique contribution by exploring quality as a margin of adjustment available to Coca-Cola. The implicit contract included a promise not only of a constant nominal price but also a constant quality (i.e., 6.5 oz. of the Secret Formula). During a period of over 70 years, we find evidence of only a single case of true quality change. By studying the margin of adjustment the Coca-Cola Company chose in response to changes in market conditions, we demonstrate that the perceived costs of breaking the implicit contract were large. We argue that one piece of direct evidence on the magnitude of these costs is the aftermath “New Coke’s” introduction in 1985.Implicit Contract, Explicit Contract, Invisible Handshake, Customer Market, Long- Term Relationship, Price Rigidity, Nickel Coke, Coca-Cola
Photoluminescent and crystal structure properties of the yellow and orange forms of [Re2(m-Cl)2(CO)6(m- 4,5-trimethyl-silyl-pyridazine]
No full textA series of neutral, dinuclear, luminescent rhenium(I) complexes suitable for phosphorescent organic light emitting devices (OLEDs) has been recently reported1,2. These compounds, of general formula [Re2(μ-Cl)2(CO)6(μ-1,2-diazine)], contain diazines bearing alkyl groups in one or in both the b positions. The complexes show intense green/yellow emissions in toluene solution and in the solid state and some of the complexes possess, in solution, high emission quantum yields (F 0.18-0.22 for the derivatives with disubstituted diazines). The excited state responsible for this emission can be confidentially described as a triplet metal-to-ligand charge transfer (3MLCT) level3. Following the DFT computational suggestions we have now synthetized a new complex of this family using the 4,5-bis(trimetylsilyl)-1,2-diazine ligand namely [Re2(m-Cl)2(CO)6(m- 4,5-trimethyl-silyl-pyridazine] (1, see Scheme). This complex has been completely carachterized in solution and it shows an emission maximum batochromically shifted respect to those of the analogous Re(I) compounds with alkyl-substituted diazine, with a lower quantum yield. Slow evaporation at room temperature of a CH2Cl2 solution containing (1) induces the concomitant formation of orange and yellow single crystals (Figure 1, top). X-ray crystal structure determinations performed at room temperature as well as at 100 K, show that they are two different polymorphs of the same compound. The emission spectra recorded on crystalline samples of the two polymorph (Figure 1, bottom) are hypsochromically shifted respect to the solution one and present higher quantum yields (lem = 537 nm and F = 0.30 for the yellow phase, lem = 575 nm and F = 0.50, for the orange one). References
(1) Mauro, M, Quartapelle Procopio, E., Sun,Y., Chien, C-H., Donghi, D., Panicati, M., Mercandelli, P., Mussini, P., D’Alfonso, G., De Cola, L. Adv. Func. Mat. 2009, in press
(2) Donghi, D., D’Alfonso, G., Mauro, M, Panigati, M., Mercandelli, P., Sironi, A., Mussini, P., D’Alfonso, L., Inorg. Chem. 2008, 47, 4243.
(3) Wrighton, M., Morse, D. L., J. Am. Chem. Soc., 1974, 96, 998
revisione del testo latino e traduzione italiana di Cola di Rienzo, Commentario sopra la Monarchia di Dante
No full textViene fornita per la prima volta una traduzione italiana del commento di Cola di Rienzo alla Monarchia di Dante, a suo tempo pubblicato dal Ricci. Il testo latino pubblicato a fronte è stato rivisto e corrett
revisione del testo latino e traduzione italiana di Cola di Rienzo, Commentario sopra la Monarchia di Dante
No full textViene fornita per la prima volta una traduzione italiana del commento di Cola di Rienzo alla Monarchia di Dante, a suo tempo pubblicato dal Ricci. Il testo latino pubblicato a fronte è stato rivisto e corrett
Erratum to: Effect of moderate red wine intake on cardiac prognosis after recent acute myocardial infarction of subjects with Type 2 diabetes mellitus (Diabetic Medicine, (2006), 23, 9, (974-981), 10.1111/j.1464-5491.2006.01886.x)
No full textIn an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola.In an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola
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