Samuel Collins

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The purpose of this study was to test a hypothesis concerning the origin of the stereotype of the stuttering personality. According to this hypothesis the stereotype is formed by inference from beliefs about the internal variables that accompany disfluencies resembling stuttering on occasions when they occur in normally fluent speakers. This hypothesis(More)
Computational thinking has been identified as a necessary fundamental skill for all students. University curricula, however, are currently not designed to provide such knowledge to a broad student population. In this paper, we report on our experiences in the development of a model for incorporating computational thinking into the undergraduate, general(More)
A fundamental goal of second generation ethanol production is to increase the ethanol concentration to 10% (v/v) or more to optimise distillation costs. Semi simultaneous saccharification and fermentations (SSSF) were conducted at small pilot scale (5L) utilising fed-batch additions of solid shredded copier paper substrate. Early addition of Accellerase®(More)
This study evaluated steam (SE) explosion on the saccharification and simultaneous saccharification and fermentation (SSF) of waste copier paper. SE resulted in a colouration, a reduction in fibre thickness and increased water absorption. Changes in chemical composition were evident at severities greater than 4.24 resulting in a loss of xylose and the(More)
BACKGROUND Wheat straw is an attractive substrate for second generation ethanol production because it will complement and augment wheat production rather than competing with food production. However, like other sources of lignocellulosic biomass, even from a single species, it is heterogeneous in nature due to the different tissues and cell types, and this(More)
First, a couple of anecdotes: While I was working on a class lecture a few days ago in my office, a " flash mob " showed up on the quadrangle in front of my window and danced to their iPods for a while before dispersing. Flash mobs were (briefly) a concern for police and other authorities in places like Minsk (Shirky, 2008, p. 165), Philadelphia (Urbina,(More)
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