The origins of screenwriting practice and discourse in Portugal

Following previous works by Patrick C. Loughney, Isabelle Raynauld, Steven Maras, Ian Macdonald, Alain Carou and Steven Price on screenwriting’s historical development in national frameworks, this article proposes to examine Portuguese screenwriting historical culture in relation to its major external influences: French, Italian and American cinema. If it is true that American mainstream cinema and its screenwriting models are now hegemonic and increasingly present in Portuguese film culture, it is also true that Portugal had (and continues to have) a strong ‘author-oriented’ film tradition, focused on artistic processes, clearly present in its screenwriting culture. Such characteristics developed first under the influence of French and Italian silent cinema, through the contribution of foreign film directors who worked in Portugal and established schools there. Also important were the cinematographic experiences (film and writing) made by modernist poets during the silent film period. Finally, the powerful influence of the French Politique des Auteurs (1950s) also helped to configure Portuguese screenwriting culture. To contextualize the Portuguese experience specifically, I explore the origins of screenwriting practice and discourse in Portugal, addressing the many political, historical and financial aspects that impacted the Portuguese perception of screenwriting craft from an early stage.

In situ simultaneous measurement of stress, retardation, and three-dimensional refractive indexes during biaxial stretching experiments under various preheating times

An evaluation method for the stretchability of a biaxially oriented film during the stretching process was recently developed using an in situ measurement test machine. Stress, retardation, three-dimensional refractive indexes, light-scattering image, and birefringence distribution of films could be obtained in a short time. This stretching test machine was applied to examine the film stretchability of both semicrystalline polymers, such as polypropylene, and noncrystalline polymers, such as polystyrene, under various preheating times. From the measurements, the stress of semicrystalline polymers increased with increasing preheating times before stretching the film. However, the stress of noncrystalline polymers did not increase with increasing preheating times. This means that semicrystalline polymer is required to set up an optimum stretching condition of the preheating time for a satisfactory biaxially oriented film. Furthermore, the birefringence distribution and thickness uniformity of the stretched film were measured simultaneously. It was found that the stretchability of polypropylene and polystyrene films could be evaluated with a small piece of the sample using the biaxial stretching test machine.

Experimental Characterization of Reverse-Oriented Film Cooling

Reverse-oriented film cooling, which consists of film cooling holes oriented to inject coolant in the opposite direction of the freestream, is experimentally investigated. Tests are conducted at various blowing ratios (M = 0.25, 0.5, and 1.0) under both low and high freestream turbulence (Tu = 0.4% and 10.1%), with a density ratio near unity. The interesting flow field that results from the reverse-jet-in-crossflow interaction is characterized using flow visualization, particle image velocimetry, and thermal field measurements. Heat transfer performance is evaluated with adiabatic film effectiveness and heat transfer coefficient measurements obtained using infrared thermography. Adiabatic effectiveness results show that reverse film cooling produces very uniform and total coverage downstream of the holes, with some reduction due to increased freestream turbulence. The reverse film cooling holes are evaluated against cylindrical holes in the conventional configuration, and were found to perform better in terms of average effectiveness and comparably in terms of net heat flux reduction, despite augmented heat transfer coefficient. Compared to shaped hole data from previous studies, the reverse film cooling holes generally had worse heat transfer performance. The aerodynamic losses associated with the film cooling are characterized using total pressure measurements down-stream of the holes. Losses from the reverse configuration were found to be higher when compared to cylindrical holes in the conventional and compound angle configurations.

Comparison of Self-Annealing Behaviors in (001)- and (111)-Oriented Electrodeposited Silver Films by In Situ EBSP Analysis

Self-annealing behaviors of the electrodeposited silver films which preferentially orient in (001) and (111) directions were investigated by in situ EBSP analysis. In the (001)-oriented film, self-annealing starts in storage for a few hours at R. T. and is almost complete after storage for 6 h at R. T. (001)- and (212)-oriented recrystallized grains mainly nucleate, and (001)-oriented grains mainly grow up. In the (111)-oriented film, self-annealing starts in storage for 15 min at R. T. and is almost complete after storage for 1 h at R. T. (111)-, (001)- and (212)-oriented recrystallized grains mainly nucleate, and (111)-oriented grains mainly grow up. The size of recrystallized grains induced in the (111)-oriented film by self-annealing is approximately half that in the (001)-oriented film although the rate of recrystallization in the (111)-oriented film is faster than that in the (001)-oriented one. The area fraction of the preferential orientation after completion of recrystallization saturates in approximately 70% and 50% in the (001)- and (111)-oriented films, respectively.