Melbourne's indigenous plants movement : the return of the natives

This thesis examines Greater Melbourne’s indigenous plants movement from the 1930s to the early twenty first century. It demonstrates the important scientific and educational role of the public intellectual, Professor John Turner, and of the Melbourne University Botany School which he led for thirty five years. The case study of the movement within the City of Sandringham and its successor the City of Bayside reveals how the inhabitants of an urbanised are responded to threats to the indigenous trees and wildflowers of their neighbourhood, stimulating botanists to assist them and using political means in order to achieve their conservation objectives. The thesis draws upon a range of local archives, conservation literature and private papers.

Displaced self : the impact of language-migration on self-identity

In this dissertation I explore the impact that language-migration has on Self-Identity. The thesis consists of two parts: a memoir The Strangeness of Freedom, and an exegesis. Each is intended to stand alone, but also to complement the other. In the memoir I draw on my personal recollections of my family's migrations across five countries (Czechoslovakia, West Germany, USA and Australia) and into three languages (Czech, German and English) in order to convey my particular experience of language migration. In the exegesis I analyse several memoirs written by other language migrants and examine what impact they believe migrating into a new language and culture had on their own Self-identity. I draw on postmodern and psychoanalytic theory to explore the nature of Self-Identity formation and why migrants, as well as non-migrants might experience a change in their Self-identity during the course of their lives. I attempt to tease out to what extent the change in Self-identity is a universal experience that results from living across time and moving from a known past into an unknown future, regardless of whether one physically migrates or not. I found that while language-migrants tend to describe a more intense disruption of their Self-Identity, non-migrants also experience such a disruption in their sense of Self, simply by living in a rapidly changing world. I propose that while changing locations and languages clearly disrupts the continuity we presume life entails, it is in fact the passage of time that distances us from our known past, including our familiar Self, even if we never physically or linguistically migrate.

Multiple strategy process migration

The future of computing lies with distributed systems, i.e. a network of workstations controlled by a modern distributed operating system. By supporting load balancing and parallel execution, the overall performance of a distributed system can be improved dramatically. Process migration, the act of moving a running process from a highly loaded machine to a lightly loaded machine, could be used to support load balancing, parallel execution, reliability etc. This thesis identifies the problems past process migration facilities have had and determines the possible differing strategies that can be used to resolve these problems. The result of this analysis has led to a new design philosophy. This philosophy requires the design of a process migration facility and the design of an operating system to be conducted in parallel. Modern distributed operating systems follow the microkernel and client/server paradigms. Applying these design paradigms, in conjunction with the requirements of both process migration and a distributed operating system, results in a system where each resource is controlled by a separate server process. However, a process is a complex resource composed of simple resources such as data structures, an address space and communication state. For this reason, a process migration facility does not directly migrate the resources of a process. Instead, it requests the appropriate servers to transfer the resources. This novel solution yields a modular, high performance facility that is easy to create, debug and maintain. Furthermore, the design easily incorporates providing multiple migration strategies. In order to verify the validity of this design, a process migration facility was developed and tested within RHODOS (ResearcH Oriented Distributed Operating System). RHODOS is a modern microkernel and client/server based distributed operating system. In RHODOS, a process is composed of at least three separate resources: process state - maintained by a process manager, address space - maintained by a memory manager and communication state - maintained by an InterProcess Communication Manager (IPCM). The RHODOS multiple strategy migration manager utilises the services of the process, memory and IPC Managers to migrate the resources of a process. Performance testing of this facility indicates that this design is as fast or better than existing systems which use faster hardware. Furthermore, by studying the results of the performance test ing, the conditions under which a particular strategy should be employed have been identified. This thesis also addresses heterogeneous process migration. The current trend is to have islands of homogeneous workstations amid a sea of heterogeneity. From this situation and the current literature on the topic, heterogeneous process migration can be seen as too inefficient for general use. Instead, only homogeneous workstations should be used for process migration. This implies a need to locate homogeneous workstations. Entities called traders, which store and disseminate knowledge about the resources of several workstations, should be used to provide resource discovery. Resource discovery will enable the detection of homogeneous workstations to which processes can be migrated.

Modelling immigration flows : an application of the bounds test to Fiji - Australia migration

This paper examines the long-run and short-run determinants of migration from Fiji to Australia between 1972 and 2001 using a human capital framework, which is extended to take account of political instability in Fiji. Our main findings are that in the long run the real wage differential and political instability in Fiji are the main determinants. In the short run, there is some evidence that the wage differential and transport costs are important factors, but this finding is not robust across all specifications. Lagged migration and political instability are the most important determinants in the short run.

Study of calcium and silicon migration in refractory magnesia

Studied the effect calcium and silicon impurities have on magnesia refractories, a material frequently used to line high-temperature furnaces. Advanced analytical techniques identified and mapped these impurities in both raw materials and finished magnesia refractories. This research considerably enhanced understanding of factors influencing refractory properties and quality.