Digital Commons Network^™

Analysis Of A Model For The Treatment Of Wastewater By The Activated Sludge Process, Simon D. Watt, Harvinder S. Sidhu, Mark I. Nelson

Faculty of Informatics - Papers (Archive)

We investigate a model for the treatment of wastewater in the activated sludge process. This process is based on the aeration of waste water with flocculating biological growth, followed by the separation of treated waste water from biological growth. Part of this growth is then wasted, and the remainder is returned to the system. The wastewater reactor is assumed to be well mixed, so the mathematical formulation for this process can be represented by a continuously stirred tank reactor with recycle. This system is analysed by combining steady-state analysis with path-following techniques. In practice, wastewater is treated by a sequence …

Teaching Games For Understanding (Tgfu); A Model For Pre Service Teachers, Gregory J. Forrest, Paul I. Webb, Philip J. Pearson

Faculty of Education - Papers (Archive)

Teaching Games for Understanding (TGfU) has been present in the Australian sporting community for the last ten years and more recently as the focus of physical education lessons in some Australian schools’ curriculum, especially in NSW. However, the effectiveness of TGfU as a teaching method is limited by the skill of its practitioners in developing the appropriate games and questions to generate understanding opportunities for their students. If practitioners do not develop these skills, there may be limited opportunities for their students to gain skills in critical analysis, deep knowledge and deep understanding, essential in any productive pedagogy.

A Semiparametric Model Approach For Financial Bankruptcy Prediction, Maria H. Kim, Paul Yoo

Faculty of Commerce - Papers (Archive)

In this study, we propose a model that achieves both accurate modeling and sustainable model stability for corporate bankruptcy prediction. This model is to model the given samples accurately as well as to respond adequately to the unknown inputs by employing semiparametric approach where parametric model and nonparametric Neural Networks (NNs) are combined. By exploring the structural relationships within the available sample data, the proposed model is assumed to retain the advantages of both parametric and nonparametric models. The proposed model is compared to pure parametric models such as Multivariate Discriminant Analysis (MDA) and Logistic Regression (LR), and pure nonparametric …

A Conceptual Model Of The Factors Affecting The Choice Of Nonprofit Organisation By Large Corporations In Australia, John Cantrell, Elias Kyriazis, Gary I. Noble, Jennifer Algie

Faculty of Commerce - Papers (Archive)

This paper develops a new conceptualisation of corporate giving which advances our knowledge in the field of nonprofit marketing through the development of a model which assists in identifying the drivers of corporate giving in Australia. Existing conceptualisations are limited in that the commercial realities of corporate life and the pressures that many organizations face in achieving concrete outcomes from their giving behaviour have not been properly reflected in research results. In an environment of increased competition amongst nonprofits for donations in terms of money, resources, and volunteers the better understanding of how and why corporations give will enable nonprofit …

Towards An Organizational Model Of Occupational Health And Safety Management: A Review Of The Literature, Michael Zanko, Scott Burrows

Faculty of Commerce - Papers (Archive)

The enormous, tragic and largely unnoticed problem of workplace injuries and deaths continues to beset countries around the globe. Tripartite regulatory approaches to address the issues involved often place primary responsibility on employers’ management of health and safety (OHS) at the workplace. This paper seeks to ascertain how OHS management at the organizational level has been treated in the research literature.

A review of thirteen leading management journals from 1994 to 2005 was conspicuous by the absence of interest in OHS management as the subject or field of study. An examination of six leading HRM journals over the same timeframe …

Beyond The Rhetoric: What Do We Mean By A 'Model Of Care'?, Patricia Davidson, Elizabeth Halcomb, L Hickman, J Phillips, B Graham

Faculty of Science, Medicine and Health - Papers: part A

Background: Contemporary health care systems are constantly challenged to revise traditional methods of health care delivery. These challenges are multifaceted and stem from: (1) novel pharmacological and non-pharmacological treatments; (2) changes in consumer demands and expectations; (3) fiscal and resource constraints; (4) changes in societal demographics in particular the ageing of society; (5) an increasing burden of chronic disease; (6) documentation of limitations in traditional health care delivery; (7) increased emphasis on transparency, accountability, evidence-based practice (EBP) and clinical governance structures; and (8) the increasing cultural diversity of the community. These challenges provoke discussion of potential alternative models of care, …

Discrete Cosine Transform Based Shift Estimation For Fringe Pattern Profilometry Using Generalized Analysis Model, Jose F. Chicharo, Jiangtao Xi, Yingsong Hu, Zongkai Yang, Enbang Li

Faculty of Engineering - Papers (Archive)

This paper presents a new analysis algorithm to carry out profile measure- ment with low computational complexity and less noise-sensitivity. Firstly, a discrete cosine transform (DCT) based representation method is introduced to express the height distribution of the three-dimensional surface. Then, a novel shift estimation algorithm, called DCT based shift estimation (DCT-SE) is presented to reconstruct three-dimensional object surfaces by using the proposed expression and the generalized analysis model. The advantage of DCT-SE is that without loss of measurement precise it provides lower computational complexity to implement three-dimensional reconstruction from distorted fringe patterns and at the same time survives from …

A Microslip Model Of The Bonding Process In Ultrasonic Wire Bonders Part I: Transient Response, C M. Hu, N Guo, H Du, W H. Li, M Chen

Faculty of Engineering - Papers (Archive)

Ultrasonic wire bonders with precision capillary tips are widely used for bonding electrical wires to IC chips and circuits. The industry is driving wire-bonding technology towards increased yields, decreased pitch, and ever decreasing cost. However, many technical and material issues will be involved in achieving these goals, such as bond quality monitoring, new failure modes, reliability problems in new plastic mold compounds, and increasing wire sweep problems, in particular lack of the quantitative understanding and validated mathematical model of the bonding process. In this paper, a microslip model is proposed for the bonding process based on the bonding pattern observed, …

Dynamic Model Simplification Of Serial Manipulators, Subir Kumar Saha, Bijan Shirinzadeh, Gursel Alici

Faculty of Engineering - Papers (Archive)

Simplicity in the dynamics model of a serial robot manipulator greatly enhances the speed of its control and the associated hardware implementation. Since the motion of one link influences the torque or force required at the other joints, the control becomes difficult. This is referred as dynamic coupling. In this paper, it is proposed to simplify the robot's dynamic coupling by suitably choosing the manipulator’s kinematic and dynamic parameters. The intention is to make the Generalized Inertia Matrix (GIM) of the serial manipulator associated with its dynamic equations of motion diagonal and/or constant. Such choice automatically ensures the associated convective …

A Model For Professional Development Of Teaching Games For Understanding For Teachers In New South Wales, Australia, Paul I. Webb, Philip J. Pearson, Kim Mckeen

Faculty of Education - Papers (Archive)

With the advent of a new syllabus for secondary schools (years 7-10) and a quality teaching focus in New South Wales schools the Australian Council of Health, Physical Education and Recreation (ACHPER, New South Wales) determined that there was a need for the professional development of teachers in teaching games for understanding (TGfU) and relating this to the new syllabus. The result was a full day professional development workshop for teachers of which five have been held and which approximately 200 teachers have attended. This paper will address the content of the workshop and respondents comments about the workshop.

The …

A New Model For Thermal Conductivity In Nanofluids, Pei Tillman, James M. Hill

Faculty of Engineering - Papers (Archive)

Nanofluids exhibit enhanced thermal conductivity superior to traditional heat transfer fluids. The conventional theoretical models cannot explain the large enhancement of the thermal conductivity of nanofluids. It has been proposed that an interfacial structure formed by liquid molecular layering might play an important role. To date there is no known procedure to properly calculate the nanolayer thickness, and all previous investigators arbitrarily adopt a layer thickness which is consistent with experimental results. Here we investigate the thermal conductivity structure of this interfacial layer and its impact on the effective thermal conductivity and an expression for the thermal conductivity profile in …