Optimising discrete event simulation models using a reinforcement learning agent

A reinforcement learning agent has been developed to determine optimal operating policies in a multi-part serial line. The agent interacts with a discrete event simulation model of a stochastic production facility. This study identifies issues important to the simulation developer who wishes to optimise a complex simulation or develop a robust operating policy. Critical parameters pertinent to 'tuning' an agent quickly and enabling it to rapidly learn the system were investigated.

The global financial crisis and the centro properties group earnings revision and refinancing announcements : an event study

This study analyses the impact of the global financial crisis using Centro Properties Group's earnings revision and refinancing announcements on December 17th 2007 as the event date to investigate the change in risk profile for A-REITs that were included in the S&P/ASX 300. The study finds that nine of the 25 A-REIT constituents on the S&P/ASX 300 recorded statistically significant negative abnormal returns on 17th December 2007 and that the systematic risk for many A-REITs moved significantly higher after this date. This increased systematic risk has major implications for the cost of capital to the sector.

Event that never happened : the history and politics of decentralisation in Victoria and New South Wales 1885-1985

The thesis is an account of movements and policies for decentralisation of population and economic activity away from metropolitan to non-metropolitan areas in Victoria and N.S.W. in the period 1885-1985. It examines the pull from the country and the push from the capitals for decentralisation. Ballarat (Victoria) and Bathurst (N.S.W.) are used as case studies. Introductory chapters describe the historic pattern of population distribution in the two Colonies/States and discuss theories about the spatial distribution of population and industry. Chapters recounting and discussing the history and politics of decentralisation in Victoria and N.S.W. are organised in three periods: 1885-1940; 1940-1965; 1965-1985. A more decentralised distribution of population in Victoria and N.S.W. was almost always widely accepted as being in the public interest. Decentralisation rose and fell recurrently on the issue attention cycle. The pull from the country was fragmented and locally self-interested. The push from the capitals occurred only when life or its quality was perceived as threatened because of factors related to city size. Governments in both States introduced micro policies ostensibly to counter formidable centralising forces. In the 1970s there was an abortive attempt to implement a selective decentralisation policy in N.S.W. The thesis argues that decentralisation did not happen because: (1) there was not a consistent set of values and goals underlying the pull and push; (2) there was never a sustained, unified constituency for decentralisation, even in the country; (3) the power to influence, subvert or obstruct decentralisation policies was too widely diffused; (4) insufficient account was taken in decentralisation policymaking of the underlying economic, social and political dynamics.

Understanding social creativity amongst event professionals : an action research approach

Live events represent a significant and growing sector of the creative industries but the creative process underlying this sector is little researched in the event management context. Despite the increased consumption of virtual and online media, the live event remains a popular channel of expression for a wide range of creative art forms and commercial messages. Live events use such messages as 'props' or 'stages' to produce memorable and emotionally positive moments for audiences. The creative process behind developing a live event is in itself a live event, involving groups of event professionals working in a social context to conceptualise ideas for their audiences. This research fills the gap for event professionals in the creative industries by seeking to understand the creative process intrinsic to live events. This paper suggests that social creativity is used to develop live event concepts. The phenomenon of social creativity identified from the existing literature is explored in the context of its application to event professionals. An Action Research approach is recommended to better understand the key antecedents of social creativity and how they can influence event concept development.

Managing realtime information flow between distributed discrete event simulation models

Investigates the creation of a method for the connection and communication of commercial off the shelf discrete-event simulation packages for simulation models of manufacturing systems. Through this research a method to connect different commercial off the shelf discrete-event simulation packages was successfully developed facilitating parallel development of models and the creation of extremely large models.

Realistic grasping of rigid virtual objects through event-based haptics

This research presents a novel haptic grasping interface and demonstrates its ability within multi-point event-based feedback. Through experimental methodology, the dynamics involved in grasp contact interactions are modelled based on first principles. The proposed approach demonstrates a method of realistically representing grasp contact with rigid virtual objects through multi-point interaction.

Effects of repeated interviews on children's recall of an event

The results of three studies suggest that repeated interviews assist in retaining information over a 6 week interval without increasing suggestibility. In addition prompting was also efficient in retaining information over 6 weeks. The implications of this study were that repeated interviews at intervals less than 4 weeks, could assist children to improve recall at a court appearance.

Design tools for event-driven software systems

Proposes a design method for the development of software in Visual BASIC whose programming environment is multi-paradigm. Extensions to structure charts and pseudocode to incorporate the three paradigms have been developed based on the premise that procedural models, event-driven forms and objects are mutually exclusive in operation.

Mental reinstatement and children's memory of a repeated event

The efficacy of mental reinstatement of context in facilitating six-year-old children's recall of one occurence of a repeated event was explored. Results demonstrated a beneficial effect of mental reinstatement of a unique contextual feature of one occurence of a repeated event on children's recall of details specific to that occurence.

Method and apparatus for detecting an event

Method of detecting an event in electrical apparatus (146, 148, 150). Electromagnetic radiation from the apparatus, characteristic of the event, is detected. An electrical signal is generated, this representing the electromagnetic radiation. The signal is subjected to non-stationary wave signal analysis to generate an output indicative of the detecting.