Digital Commons Network^™

An Integrated Computer-Aided Modular Fixture Design System For Machining Semi-Circular Parts, Uday H. Farhan

Theses: Doctorates and Masters

Productivity is one of the most important factors in manufacturing processes because of the high level of market competition. In this regard, modular fixtures (MFs) play an important role in practically improving productivity in flexible manufacturing systems (FMSs) due to this technology using highly productive computer numerical control (CNC) machines. MFs consist of devices called jigs and fixtures for accurately holding the workpiece during different machining operations. The design process is complex, and traditional methods of MF design were not sufficiently productive.

Computer-aided design (CAD) software has rapidly improved as a result of the development of computer technology, and has …

E-Learning Implementation Strategies For An Ict-Challenged Environment : Case Of The University Of Ghana, Legon, Isaiah T. Awidi

Theses: Doctorates and Masters

E-learning implementation in higher education continues to gain prominence in both developed and developing countries, and while most universities in ICT-rich environments are exploring different ways of using ICT and multimedia resources to enhance teaching and learning, the same cannot be said about ICT-challenged environments. Nevertheless, the question of successful and sustainable e-learning implementation continues to remain a challenge, particularly in ICT-challenged environments.

The primary purpose of this research was to examine policy and strategy issues that have influenced the process of e-learning implementation at the University of Ghana (UG), given that previous ICT and e-learning initiatives failed to improve …

An Investigation Into The Volatility And Cointegration Of Emerging European Stock Markets, Anna Golab

Theses: Doctorates and Masters

This dissertation examines the interaction between European Emerging markets including cointegration, volatility, correlation and spillover effects. This study is also concerned with the process of the enlargement of the European Union and how this affects the emerging markets of newcomers. The twelve emerging markets studied are Bulgaria, the Czech Republic, Cyprus, Estonia, Hungry, Latvia, Lithuania, Malta, Poland, Romania, Slovakia and Slovenia, which are all progressing very rapidly in their reforms and domestic economic stability.

The majority of prior studies on stock market comovements and integration have concentrated on mature developed markets or the advanced emerging markets of the Czech Republic, …

Human Factors And Cultural Influences In Implementing Agile Philosophy And Agility In Global Software Development, Anuradha Sutharshan

Theses: Doctorates and Masters

As software becomes increasingly important to all aspects of industry, developers should be encouraged to adopt best practice and hence improve the quality of the processes used, and achieve targets relating to time, budget and quality. In the software industry, several software methodologies have been used to address software development problems; however some of these processes may be too bureaucratic. The Agile Alliance formed in 2001, sought to address this problem; accordingly, they developed a manifesto and twelve principles, to which all agile software methods adhere. The purpose of the manifesto and its principles is to uncover better ways of …

On A Joint Physical Layer And Medium Access Control Sublayer Design For Efficient Wireless Sensor Networks And Applications, Mahir Lumumba Meghji

Theses: Doctorates and Masters

Wireless sensor networks (WSNs) are distributed networks comprising small sensing devices equipped with a processor, memory, power source, and often with the capability for short range wireless communication. These networks are used in various applications, and have created interest in WSN research and commercial uses, including industrial, scientific, household, military, medical and environmental domains. These initiatives have also been stimulated by the finalisation of the IEEE 802.15.4 standard, which defines the medium access control (MAC) and physical layer (PHY) for low-rate wireless personal area networks (LR-WPAN).

Future applications may require large WSNs consisting of huge numbers of inexpensive wireless sensor …

Improving Classroom Discourse In Inquiry-Based Primary Science Education, Prudence Smith

Theses: Doctorates and Masters

Teachers‟ capacity to use classroom discourse to deepen student learning through sustained conversation is considered crucial to increasing students‟ intellectual development. Learners actively construct knowledge and develop understandings from their shared experiences and via interaction with others (Driver, Asoko, Leach, Mortimer & Scott, 1994). However, talk that fosters students‟ capacity to reason is lacking in many classrooms (Alexander, 2006) and, what is more, teachers tend to control the discourse by asking a predominance of closed questions and using a question-answer recitation script which limits the exploration of students‟ ideas (Nystrand, Gamoran, Kachy, & Prendergast, 1997). The purpose of this study …

Surface Plasmons For Enhanced Metal-Semiconductor-Metal Photodetectors, Ayman A. Karar

Theses: Doctorates and Masters

Surface Plasmon Polaritons (SPPs) are quantized charge density oscillations that occur when a photon couples to the free electron gas of the metal at the interface between a metal and a dielectric. The extraordinary properties of SPP allow for sub-diffraction limit waveguiding and localized field enhancement. The emerging field of surface plasmonics has applied SPP coupling to a number of new and interesting applications, such as: Surface Enhanced Raman Spectroscopy (SERS), super lenses, nano-scale optical circuits, optical filters and SPP enhanced photodetectors. In the past decade, there have been several experimental and theoretical research and development activities which reported on …

Effectiveness Of Teacher Professional Learning : Enhancing The Teaching Of Fractions In Primary Schools, Derek Hurrell

Theses: Doctorates and Masters

This study was motivated by the need to develop professional learning for primary school teachers that would support them to more effectively teach the mathematics topic of fractions. What seemed evident, was that previous professional learning attended by teachers had not adequately met their needs.

The aim of this study was to investigate whether professional learning, with a focus on subject content knowledge, pedagogical knowledge and reflective practice could enhance primary school teachers’ PCK for teaching fractions and make them more confident teachers of fractions. Demonstrating this to be the case would have wide implications for the development of professional …

Teaching Excellence : An Illusive Goal In Higher Education Teaching And Learning, Heather Sparrow

Theses: Doctorates and Masters

In the last decades of the 20th Century, and through the first decade of the 21st Century, both the natural world and human society have experienced dramatic change. Contemporary society world-wide has high expectations of the contribution that universities can make in helping people learn to live with change, to lead change, to manage change, and to support improvement in all spheres of life. The global community seeks ‘excellence’ across all higher education roles: community engagement and leadership, research and innovation, and teaching and learning. However, universities are not always regarded as effective in fulfilling the needs of students, business …

Investigating The Implementation Of The Indonesian Ktsp (School-Based Curriculum) In The Teaching Of Writing In Year Two, Sulfasyah

Theses: Doctorates and Masters

This study focused on the interpretation and implementation of the Kurikulum Tingkat Satuan Pendidikan (KTSP) in primary schools in Makassar City, Indonesia. The KTSP is a school-based curriculum which was introduced in 2006 and became compulsory across Indonesia in 2009. The main purpose of the study was to explore teachers‟ interpretation of the KTSP in relation to teaching writing to Year 2 students; to investigate how these teachers implemented the KTSP when teaching writing; and, to identify factors that influenced their interpretation and implementation of the KTSP in relation to writing. The teachers‟ interpretation and implementation of this new curriculum …

Numeracy Support For Year Two Students, Gillian Dawn Hurle

Theses: Doctorates and Masters

Research of teaching theories and intervention programs internationally and in Australia suggests that the implementation of numeracy support programs can improve student achievement levels (Fuchs, 2005; Ketterlin-Geller, Chard & Fien, 2008; Van Kraayenoord & Elkins, 2004). An intervention program was conducted for a small group of Year Two students with the aim of improving their numeracy skills over a 20 week period. Results of two mathematics assessments, together with information provided by teachers based on classroom observations and informal assessments were combined to select a group of twelve students who were considered to be at risk of developing mathematical difficulties. …

Practice Based Competency Development: A Study Of Resource Geologists And The Jorc Code System, Jacqueline Coombes

Theses: Doctorates and Masters

The mining industry is a major contributor to the Australian economy. The value of mining and exploration shares traded on the Australian Stock Exchange are contingent on the estimates of mineral deposits, which are disclosed publically in accordance with a reporting code maintained by the Australasian Joint Ore Reserves Committee (the JORC Code). Expert resource geologists, known as Competent Persons, provide classified estimates of mineral endowment that underpin these public statements. The JORC Code requirements for qualifying as Competent Persons are membership of an approved professional association and a minimum of five years’ relevant experience. This research set out to …

Lichens As A Biomonitoring Tool For Detecting Heavy Metal Air Pollution Associated With Industrial Activities In Collie, South-Western Australia, Meenu Chathurika Vitarana

Theses: Doctorates and Masters

During the last few decades, various techniques for using lichens as biomonitors have been developed for monitoring air pollution and forest ecosystem health. Lichens have been used effectively to determine the dispersion of heavy metals emitted by industrial point-sources; however the approach has not been commonly used in Australia. This thesis aimed to determine the effectiveness of using a lichen biomonitoring approach to measure the heavy metal pollutants emitted from coal-fired power stations and related industries in Collie, south-western Australia, an area with concern over poor air quality. Three different approaches to lichen biomonitoring were investigated. The first explored lichen …

On The Recognition Of Emotion From Physiological Data, Warren Creemers

Theses: Doctorates and Masters

This work encompasses several objectives, but is primarily concerned with an experiment where 33 participants were shown 32 slides in order to create ‗weakly induced emotions‘. Recordings of the participants‘ physiological state were taken as well as a self report of their emotional state. We then used an assortment of classifiers to predict emotional state from the recorded physiological signals, a process known as Physiological Pattern Recognition (PPR). We investigated techniques for recording, processing and extracting features from six different physiological signals: Electrocardiogram (ECG), Blood Volume Pulse (BVP), Galvanic Skin Response (GSR), Electromyography (EMG), for the corrugator muscle, skin temperature …

Inorganic Hydrogeochemical Responses To Fires In Wetland Sediments On The Swan Coastal Plain, Western Australia, David Blake

Theses: Doctorates and Masters

In the past decade the wetlands of the Swan Coastal Plain (SCP) region of Western Australia have been subject to increasing fire frequency and intensity. Whilst wetland sediment fires (also known as peat fires) on the SCP are not new phenomena, the increased frequency, duration and extent of combustion have been concomitant with an increase in urbanisation and reduction in average annual rainfall for the region. This has led to a decrease in ground- and surface-water levels which, in turn, has increased the susceptibility of the wetland sediments to ignition and combustion events. Increased wetland fire severity has resulted in …

Mining Climate Data For Shire Level Wheat Yield Predictions In Western Australia, Yunous Vagh

Theses: Doctorates and Masters

Climate change and the reduction of available agricultural land are two of the most important factors that affect global food production especially in terms of wheat stores. An ever increasing world population places a huge demand on these resources. Consequently, there is a dire need to optimise food production.

Estimations of crop yield for the South West agricultural region of Western Australia have usually been based on statistical analyses by the Department of Agriculture and Food in Western Australia. Their estimations involve a system of crop planting recommendations and yield prediction tools based on crop variety trials. However, many crop …

Tablet Pc Use In Teaching And Learning : A Case Study, Andrew Stewart

Theses: Doctorates and Masters

With the emergence of the use of the traditional (non-touch screen) notebook computer in the classroom, different teaching styles and equipment have been introduced. Teachers have started to use the Notebook PC to support their teaching. They now have the ability to gather and use a far greater range of materials in the classroom with little distraction.

The introduction of the touch screen Tablet PC has brought another dimension to the way technology can be used in the classroom. This study seeks to investigate the ways in which Tablet PC technology has been used to enhance the learning of students …

The Reality Of Reform : Teachers Reflecting On Curriculum Reform In Western Australia, Jessica Lyle

Theses: Doctorates and Masters

Australia is implementing its first national curriculum, the Australian Curriculum, after many years of debate regarding the validity and practicality of such an undertaking. Although it is widely accepted that “the effects of education policies and programs depend chiefly on what teachers make of them” (Cohen & Ball, 1990, p. 233), little is known about teachers’ perceptions of the Australian Curriculum or their prior experiences of mandatory curriculum reform as they begin engaging with this unique reform. To provide a means of exploring these perceptions and experiences, 18 teachers, four Head of Learning Areas (HOLAs) and the principal from a …

Analysis And Determinants Of Sustainability Policy Choice Of Local Councils In Australia : A Test Of Stakeholder Theory, Clive P. Oliver

Theses: Doctorates and Masters

Since the early 1990’s, issues of sustainability involving community, government and industry have gained momentum, and the environment has become the focus of numerous studies, such as those undertaken by Young and Hayes (2002); Yuan (2001); Staley (2006); Mellahi and Wood (2004); Hezri and Hasan (2006); Dowse 2006; Wilmhurst and Frost (2000); and Qian, Burritt and Monroe (2010). Cotter and Hannan (1999, p.11) also discussed the impetus of a United Nations summit in 1992, known as the Earth Summit, which resulted in Local Agenda 21, a blueprint for action to achieve sustainable development.

Global sustainability is currently a major focus …

Complexity And Creative Capacity : Reformulating The Problem Of Knowledge Transfer In Environmental Management, Kelly Chapman

Theses: Doctorates and Masters

The Ningaloo Reef is Australia’s largest fringing coral reef and an iconic tourist destination; however tourism development in Ningaloo has been ad hoc and the area is challenged by human pressure on numerous fronts. In response to these challenges a number of research agencies brought together a range of scientists to study the effects of human interaction on the reef. Moving from research to practice has been understood to depend on the adaptive capacity of the institutions responsible for governing human activities, in this case in the Ningaloo area. Knowledge transfer describes the suite of strategies used to try to …

Opto-Vlsi-Based Adaptive Optical Power Splitter/Combiner For Next Generation Dynamic Optical Telecommunication Networks, Haithem A. Mustafa

Theses: Doctorates and Masters

The demand for optical power splitters is growing globally, due to the rapid deployment of fibre-to-the-premises, optical metropolitan area network (MAN), and active optical cables for TV/Video signal transport. Optical splitters play an important role in passive optical network (PON) technology by enabling several hundred users to share one optical line terminal. However, current PONs, which use fixed optical power splitters, have limited reconfigurability particularly in adding/dropping users to/from an optical network unit.

An adaptive optical power splitter (OPS) can dynamically reallocate the opticalpower in the entire network according to the real-time distribution of users and services, thus providing numerous …

A Model For Systematically Investigating Relationships Between Variables That Affect The Performance Of Novice Programmers, Vivian Campbell

Theses: Doctorates and Masters

This research was motivated by an interest in novices learning to program

and a desire to understand the factors that affect their learning. The

traditional approach to performing such an investigation has been to select

factors which may be important and then perform statistical tests on a few

potential relationships. A new research model is proposed and tested to

ensure that a thorough and systematic investigation of the data is performed.

This thesis describes the data, defines the model and explains the

application and validation of the model.

The research process is managed by a control algorithm that is the …

Silver (Ag) Nanoparticle Based Masks For The Development Of Antireflection Subwavelength Structures In Gaas And Si Solar Cells, Nazme A. Moushumy

Theses: Doctorates and Masters

This thesis focuses on the design and development of silver nanoparticles that can be used as masks for the development of antireflection subwavelength grating (SWG) structures. We particularly investigate the impact of silver thin film thickness and the effect of annealing temperature on the fabrication of silver nanoparticles of controlled size and spacing distributions. We also use these measured distributions to predict the performance of subwavelength grating structures developed using dry and isotropic etching of semiconductor substrates.

Silver (Ag) thin films of different thicknesses are deposited on Silicon (Si) and Gallium Arsenide (GaAs) semiconductor substrates and annealed at different temperatures. …

Evaluating Residential Satisfaction With An Innovative Dual Water Supply System In Water Sensitive Urban Development, Raju S. Dhakal

Theses: Doctorates and Masters

The Australian water industry is facing two major challenges: a rise in water demand due to a growing population and a decrease in rainfall availability due to a drying climate. This situation has triggered a re-evaluation of traditional water schemes and promoted consideration of alternatives for sustainable urban water management. One possibility is to replace drinking water usage in garden and outdoor irrigation with non-potable groundwater. This could save almost half of the water supplied in the residential sector, which is the biggest consumer of scheme water in most Australian cities. A major hurdle for the success of such fit-for-purpose …

School Administrators' Beliefs Regarding The Relationship Between School Improvements And Formal School Registration, Harm P. Witten

Theses: Doctorates and Masters

In 2004, the Government of Western Australia introduced an inspection-type formal school registration process for Non-Government (Independent) Schools, fulfilling the legislative requirement of a new School Education Act of 1999 (Part 4, Sec.159). This formal school registration process featured twelve criteria that are used to evaluate the quality of education. The government claimed that it would ensure a good education for all students in Western Australian, including those students enrolled in Independent Schools. However, very little is known about this formal school registration process, the twelve criteria used in it, or even if school administrators believe that it has helped …

Fluid Fractals: Leadership At The Apex Of Local Authority In England, Smita Tripathi

Plymouth Business School Theses

Purpose: This thesis aims to explore the complex phenomenon of leadership at the apex of democratically elected local authority in England. It makes sense of the social construction of leadership as perceived and enacted by senior appointed officers (hereinafter officers), elected members (hereinafter members) and key stakeholders – the voices from the apex and their understandings and interpretations. Design/methodology/approach: The thesis examines leadership literature through the paradigm of constructivism-interpretivism, making sense of transcripts of the semi-structured interviews with officers, members and stakeholders engaged in local authority work. Dominant/mainstream theories of leadership offer limited help to understanding the relational, processual constructions …

Optimising Supply Chain Performance Via Information Sharing And Coordinated Management, Wei Xu

Plymouth Business School Theses

Supply chain management has attracted much attention in the last decade. There has been a noticeable shift from a traditional individual organisation-based management to an integrated management across the supply chain network since the end of the last century. The shift contributes to better decision making in the supply chain context, as it is necessary for a company to cooperate with other supply chain members by utilising relevant information such as inventory, demand and resource capacity. In other words, information sharing and coordinated management are essential mechanisms to improve supply chain performance. Supply chains may differ significantly in terms of …

Rural Non-Farm Livelihood Diversification And Poverty Reduction In Nigeria, Paul Agu Igwe

Plymouth Business School Theses

The aim of this research is to provide analysis of the rural non-farm sector in Nigeria by investigating inter-linkages between farm and non-farm activities. By critical analysis using quantitative and qualitative research methods to investigate farm and non-farm sectors, the research attempts to reveal the complex linkages between these activities undertaken by rural households. The analysis employs household surveys aimed at collecting primary data undertaken to investigate various aspects of rural livelihoods including sources of income, employment, diversification and determinants of household income. The research provides analysis of Rural Micro and Small Enterprises (RMSEs) in the non-farm sector. It investigates …

Election Data Visualisation, Elena Long

Plymouth Business School Theses

Visualisations of election data produced by the mass media, other organisations and even individuals are becoming increasingly available across a wide variety of platforms and in many different forms. As more data become available digitally and as improvements to computer hardware and software are made, these visualisations have become more ambitious in scope and more user-friendly. Research has shown that visualising data is an extremely powerful method of communicating information to specialists and non-specialists alike. This amounts to a democratisation of access to political and electoral data. To some extent political science lags behind the progress that has been made …

Covenant Of Redemption In The Theology Of Jonathan Edwards: The Nexus Between The Immanent And The Economic Trinity, Reita Yazawa

CTS PhD Doctoral Dissertations

Contemporary trinitarian theologies tend to hold that the doctrine of the Trinity, especially the immanent Trinity, became impractical, speculative, and abstruse over the years in the history of Christian theology. In response, the recent theologies of the Trinity explore various practical implications of the doctrine of the Trinity with emphasis on God’s economic work of redemption in history. However, the Reformed idea of the covenant of redemption helps us to reconsider whether the doctrine of the Trinity, even of the immanent Trinity, has been really so impractical. In this study, I argue that the Reformed idea of the covenant of …