Investigation to define the propagation characteristics of a finite amplitude acoustic pressure wave Final report

Aerodynamic noise generation by finite amplitude pressure wave propagation through entropy producing region

Investigation to define the propagation characteristics of a finite amplitude acoustic pressure wave

A theoretical analysis of the propagation characteristics of a finite amplitude pressure wave is presented. The analysis attempts to study the contribution of entropy-producing regions to the mechanism of aerodynamic noise generation. It results in a nonlinear convective wave equation in terms of entropy and a thermodynamic 'J' function. A direct analogy between the derived governing equation and those used in classical literature is obtained. An idealization of the processes considered permits the uncoupling of the equations of motion with a consequent construction of an acoustic analogy treating shock wave emission of finite amplitude acoustic waves. An engineering approach is reflected in the concept of an extended plug nozzle whose function is to facilitate aerodynamic noise attenuation by modifying the entropy-producing regions

電腦與香港法律研究

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Working times in atypical forms of employment: the special case of part-time work

Chapitre 5, à la suite de la conférence ACSEG 2001 à RennesIn the present article, we attempt to devise a typology of forms of part-time employment by applying a widely used neuronal methodology called Kohonen maps. Starting out with data that we describe using category-specific variables, we show how it is possible to represent observations and the modalities of the variables that define them simultaneously, on a single map. This allows us to ascertain, and to try to describe, the main categories of part-time employment

The role of solvents in the lives of Kenyan street children: an ethnographic perspective

This paper explores the use of solvents among a group of street children in Ruiru, a satellite town of Nairobi. Solvent use is functional- dulling the senses against the hardship of the streetyet it also provides a link to the support structure of the ‘street family’ as a potent symbol of shared experience. Organisations working to rehabilitate street children are criticised for failing to appreciate the social context of solvent dependence amongst street children. Dependence on glue is preceded by dependence on ‘street families’, therefore organisations working to rehabilitate street children need to ensure they work through, rather than in conflict with, the ‘street family’. Key Words: Solvents, street children, Kenya, ethnograph

A Case Study: The Effect of Repeated Read-Alouds of Complex Texts on the Comprehension of a Preschool Student

Abstract The purpose of my research is to explore how the comprehension of a preschool student is impacted through being engaged in a total of twelve read alouds and discussions using complex texts in the form of a chapter book. During the conducting of this research, a preschooler participates in read alouds conducted by the researcher and engages in a post-reading discussion about the reading. Each read aloud is then repeated a second time followed by second post-reading discussion. My research seeks to answer to what extent can a preschool student retell and discuss content from a complex text? How does the use of repeated readings of complex texts impact the comprehension and vocabulary knowledge of a preschool student? The data is collected through the use of observations and comprehension rubrics