34,323 research outputs found
Realism in Film: Less is More
What is realism in film? Focusing on a test case of HFR high-definition movies, I discuss in this article various types of realism as well as their interrelations.
Precision, recessiveness of the medium, transparency, and 'Collapse' are discussed and compared. At the end of the day, I defend the claim that 'less is more' in the sense that more image precision can actually have a negative impact on storytelling
Improving the Protectiveness of 3-Mercaptopropyl-Trimethoxysilane Coatings on Bronze by Addition of Oxidic Nano- and Microparticles
The protectiveness of coatings based on 3-mercaptopropyl-trimethoxysilane (PropS-SH) applied on bronze artworks was enhanced by investigating and tuning a variety of factors. In particular, the coating performances were optimized by proper additive choice among oxide nanoparticles (CeO2, La2O3, TiO2) and microparticles (fly ash (FA)), and by varying the aging time of the nanoparticle suspensions before coating application and the RT curing time of the coatings. Moreover, the possibility of conservation of the silane solution under refrigerated conditions was assessed. The aggressive environment was a tenfold concentrated synthetic acid rain (AR × 10). The techniques adopted comprised electrochemical tests (polarization curve recording and EIS tests) and SEM-Energy Dispersion Spectroscopy (EDS) observations. In the case of FA microparticles, never used before as additives in silane coatings, further tests were performed in FA suspensions in AR × 10 to clarify the contribution of these particles to PropS-SH coating protectiveness. The tests included pH measurements, elemental chemical analyses, and electrochemical tests on bare bronze. Improved performances of PropS-SH coatings were achieved by La2O3, CeO2, and FA addition, with La2O3 affording the best results during 20 days of immersion. The positive influence of FA was connected to its alkaline character and to the release of soluble silicates
The compounding of short fibre reinforced thermoplastic composites
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.It is generally accepted that the mechanical properties of short fibre reinforced thermoplastics do not correspond with the high mechanical properties of fibres used to reinforce them.
A study is made into the methods of compounding reinforcing fibres into thermoplastics to produce short fibre reinforced thermoplastics of enhanced properties.
The initial method chosen for investigation is the twin screw extrusion compounding process. Variables such as fibre feeding arrangement and extrusion screw design are found to be factors influencing the properties of carbon and glass reinforced nylon 6,6. Use is made of computer programs to predict properties, assess compound quality and estimate fibre-matrix bond strength.
Investigations indicate that the presence of reinforcing fibres with enhanced lengths does not result in the predicted property increases. The reasons for this shortfall are believed to lie in unfavourable fibre orientation in injection mouldings and the reduced strain to break of these materials.
Short Kevlar reinforced thermoplastics are compounded and their mechanical properties assessed. The reasons for the poor mechanical properties for these materials are identified as a poor bond strength between fibre and matrix, the formation of points of weakness within the fibres by the compounding and moulding processes and the coiled arrangement of fibres present in injection mouldings.
A method suitable for the routine assessment of fibre-matrix bond strength is used to examine combinations of fibre and thermoplastic matrix. A comparison is made of the values derived from this method with values calculated from stress-strain curves of injection mouldings. This allows an understanding of the nature of the fibre-matrix bond yielded by compounding and injection moulding steps.
A description is given of a novel method designed to overcome the limitations of conventional compounding routes to produce long fibre reinforced injection moulding feedstock. Further work is necessary before this method is a feasible production technique
A generalized chemistry version of SPARK
An extension of the reacting H2-air computer code SPARK is presented, which enables the code to be used on any reacting flow problem. Routines are developed calculating in a general fashion, the reaction rates, and chemical Jacobians of any reacting system. In addition, an equilibrium routine is added so that the code will have frozen, finite rate, and equilibrium capabilities. The reaction rate for the species is determined from the law of mass action using Arrhenius expressions for the rate constants. The Jacobian routines are determined by numerically or analytically differentiating the law of mass action for each species. The equilibrium routine is based on a Gibbs free energy minimization routine. The routines are written in FORTRAN 77, with special consideration given to vectorization. Run times for the generalized routines are generally 20 percent slower than reaction specific routines. The numerical efficiency of the generalized analytical Jacobian, however, is nearly 300 percent better than the reaction specific numerical Jacobian used in SPARK
Upaya Meningkatkan Hasil Belajar Materi Pecahan dengan Alat Peraga Benda Konkrit
This research is motivated by , there are still problems that occurred during the study due to the ability of the material fractions of different students , lack of exercise and control , lack of conditioning the classroom teachers so that students did not understand what was ordered , the lack of ability in designing and implementing teacher learning , lack of guidance to the students , a lack of student interest in math , as students consider mathematics lessons scary , facilities and infrastructure or media used does not support the achievement of learning objectives . To overcome this gap is believed to be using the media props concrete objects in the learning of mathematics can further stimulate students' interest and motivation in the material fractions . The method used in this research is descriptive method , collaborative research , while research is a form of action research . Mechanical engineering research that is of direct observation and measurement techniques . The subjects in this study were teachers and students of class III Elementary School District 23 Senibung Melawi Sea . Students numbering 13 people , consisting of 8 boys and 5 girls . The experiment was conducted in the first semester of the month of September 2013 . Based on the description of the results of each cycle of use of media props concrete objects can improve student learning outcomes in the material fractions , which dapata seen in the average revenues resulted from initial observations to the second cycle . Based on the description above , in general the use of media props used concrete objects have been successful in improving student learning outcomes Kels III Elementary School 23 Senibung Sea . Thus props concrete objects is suitable to be applied during the process of learning mathematics to improve student learning outcome
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JuxtaLearn DELIVERABLE Report D3.5 Service scenario documentation
The purpose of Deliverable 3.5 is to provide guidelines to creating juxtaposed performance, particularly to advise non-drama teachers on what to do and how to manage performance in stage 3 of the JuxtaLearn process. Building on pedagogies of threshold concepts and juxtaposed learning, it explains the performance steps, orchestrating learning through participative video making and story making with peers. It provides guidance for teachers, offering resources that include suggested lesson plans and example timings.
Thus, in the absence of a shared touchable with JuxtaLearn software, it suggests a practical additional and alternative to using the software of WP4 touch table
Viking '75 spacecraft design and test summary. Volume 3: Engineering test summary
The engineering test program for the lander and the orbiter are presented. The engineering program was developed to achieve confidence that the design was adequate to survive the expected mission environments and to accomplish the mission objective
Underdogs and superheroes: Designing for new players in public space
We are exploring methods for participatory and public involvement of new 'players' in the design space. Underdogs & Superheroes involves a game-based methodology – a series of creative activities or games – in order to engage people experientially, creatively, and personally throughout the design process. We have found that games help engage users’ imaginations by representing reality without limiting expectations to what's possible here and now; engaging experiential and personal perspectives (the 'whole' person); and opening the creative process to hands-on user participation through low/no-tech materials and a widely-understood approach. The methods are currently being applied in the project Underdogs & Superheroes, which aims to evolve technological interventions for personal and community presence in local public spaces
Development of suspended thermoreflectance technique and its application in thermal property measurement of semiconductor materials
Doctor of PhilosophyDepartment of Mechanical and Nuclear EngineeringGurpreet SinghThis dissertation details the development of a new scientific tool for the thermal characterization of freestanding micro/nano-scale materials, with specific application to thin films. The tool consists of a custom-designed and calibrated opto-electric system with superior spatial and temporal resolutions in thermal measurement. The tool, termed as Suspended ThermoReflectance (STR), can successfully perform thermal mappings at the submicron level and is able to produce unconstrained thermal conductivity unlike other optical measurement techniques where independent conductivity measurement is not possible due to their reliance on heat capacity. STR works by changing the temperature of a material and collecting the associated change in light reflection from multiple points on the sample surface. The reflection is a function of the material being tested, the wavelength of the probe light and the composition of the specimen for transparent and quasi-transparent materials. Coupling the change in reflection, along the sample’s length, with the knowledge of heat conduction allows for the determination of the thermal properties of interest. A thermal analytical model is developed and incorporated with optical equations to characterize the conductivity of thin films. The analytical model is compared with a finite element model to check its applicability in the STR experiment and data analysis. Ultimately, thermal conductivity of 2 µm and 3 µm thick Si samples were determined using STR at a temperature range of 20K – 350K and compared to literature as a validation of the technique.
The system was automated using a novel LabView-based program. This program allowed the user to control the equipment including electronics, optics and optical cryostat. Moreover, data acquisition and real-time monitoring of the system are also accomplished through this computer application.
A description of the development, fabrication and characterization of the freestanding thin films is detailed in this dissertation. For the most part, the thin films were fabricated using standard microfabrication techniques. However, different dry and wet etching techniques were compared for minimum surface roughness to reduce light scattering. The best etching technique was used to trim the Si films for the desired thicknesses. Besides, vapor HF was used to avoid stiction-failure during the release of suspended films
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