Social and Behavioral Sciences Commons^™

Two Studies Of The Empirical Basis Of Two Learning Resource-Oriented Motivational Strategies For Gifted Educators, Anamaria Vladut, Wilma Vialle, Albert Ziegler

Faculty of Social Sciences - Papers (Archive)

Two learning resource-oriented motivational strategies for gifted educators are introduced: a homeostatic orientation that aims for balance and an allostatic orientation that aims at growth. In order to establish the empirical basis of these motivational strategies, two studies were conducted with samples of students from a specialized post-secondary business school who were enrolled in grades 11–13. Study 1 focused on the empirical basis of the homeostatic orientation. It was shown that the availability of learning resources is associated with two forms of balance within an actiotope: robustness and resilience. Furthermore, it could be shown that the effects of exogenous learning …

Compressive Behaviour Of Square Fibre-Reinforced Polymer-Concrete-Steel Hybrid Multi-Tube Concrete Columns, Chun Wa Chan, Tao Yu, Shi Shun Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

Fibre-reinforced polymer-concrete-steel hybrid multi-tube concrete columns are a new form of columns recently proposed at the University of Wollongong. An multi-tube concrete column consists of an external fibre-reinforced polymer tube and a number of circular internal steel tubes, with the space inside all the tubes filled with concrete. This article presents the first ever experimental study on square multi-tube concrete columns. The experimental program included a total of 14 stub column specimens tested under axial compression, with the test variables being the thickness of the external fibre-reinforced polymer tube, and the dimensions and configuration of the internal steel tubes. The …

Influence Of Steel Fibres On The Behaviour Of Rpc Circular Columns Under Different Loading Conditions, Ahmed Al-Tikrite, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

An experimental program was conducted to investigate the effect of inclusion of steel fibres on the behaviour of Reactive Powder Concrete (RPC) columns. Three different types of steel fibre were used: micro straight steel fibre (MF), macro deformed steel fibre (DF) and waste steel fibre (WF) recovered from discarded tyres. In addition, a hybridization of steel fibres was made up to produce waste-industrial hybridization (WHF) (MF, DF and WF). Twenty reinforced RPC column specimens were prepared and tested under axial concentric, eccentric and flexural loading. Results of testing demonstrated that the ultimate axial load and the corresponding axial deformation increased …

Mechanical Properties And Microstructure Of A Ti-6al-4v Alloy Subjected To Cold Rolling, Asymmetric Rolling And Asymmetric Cryorolling, Hai Liang Yu, Ming Yan, Jintao Li, Ajit R. Godbole, Cheng Lu, Anh Kiet Tieu, Hui Jun Li, Charlie Kong

Faculty of Engineering and Information Sciences - Papers: Part B

The mechanical properties of the Ti-6Al-4V alloy are significantly determined by the process used for manufacture. In this study, the mechanical properties of the Ti-6Al-4V alloy manufactured using cold rolling, asymmetric rolling and asymmetric cryorolling were characterized by subjecting it to the tensile test and the microhardness test. The evolution in the microstructure was studied using scanning electron microscopy, transmission electron microscopy as well as energy dispersive X-ray spectrometry. Results show that the Ti-6Al-4V alloy sheets subjected to asymmetrical cryorolling with low rolling speed ratio between the upper and lower rolls have the highest tensile strength and microhardness. The tensile …

Behaviour Of Carbon Fibre-Reinforced Polymer-Confined Hollow Circular Concrete Columns With Inner Polyvinyl Chloride Tube, Hussamaldeen Goaiz, Tao Yu, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Existing studies have shown that the use of an inner tube can significantly enhance the effectiveness of confinement in fibre-reinforced polymer-confined hollow columns. The inner tube used in the existing studies, however, generally had a large stiffness and also served as longitudinal reinforcement. The use of a stiff inner tube is inefficient in resisting bending for hollow columns with a relatively small void and may be unnecessary for constraining the inner surface of concrete. Against this background, this article presents the first experimental study on fibre-reinforced polymer-confined hollow columns with an inner polyvinyl chloride tube. The experimental program included a …

Efficient Cost Aggregation For Feature-Vector-Based Wide-Baseline Stereo Matching, Xiaoming Peng, Abdesselam Bouzerdoum, Son Lam Phung

Faculty of Engineering and Information Sciences - Papers: Part B

In stereo matching applications, local cost aggregation techniques are usually preferred over global methods due to their speed and ease of implementation. Local methods make implicit smoothness assumptions by aggregating costs within a finite window; however, cost aggregation is a time-consuming process. Furthermore, most existing local methods are based on pixel intensity values, and hence are not efficient with feature vectors used in wide-baseline stereo matching. In this paper, a new cost aggregation method is proposed, where a Per-Column Cost matrix is combined with a feature-vector-based weighting strategy to achieve both matching accuracy and computational efficiency. Here, the proposed cost …

Local Buckling Of Steel Plates In Concrete-Filled Steel Tubular Columns At Elevated Temperatures, Ghanim Mohammed Kamil, Qing Quan Liang, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Local buckling remarkably reduces the strength of steel plates in rectangular thin-walled concrete-filled steel tubular (CFST) columns at ambient temperature. This effect is more remarkable at elevated temperature. However, there have been very limited experimental and numerical investigations on the local and post-local buckling behavior of steel plates in CFST columns at elevated temperatures. This paper presents numerical studies on the local and post-local buckling behavior of thin steel plates under stress gradients in rectangular CFST columns at elevated temperatures. For this purpose, finite element models are developed, accounting for geometric and material nonlinearities at elevated temperatures. The initial geometric …

A Construction For {0,1,-1} Orthogonal Matrices Visualized, N A. Balonin, Jennifer Seberry

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.

The Effects Of Forced Interpass Cooling On The Material Properties Of Wire Arc Additively Manufactured Ti6al4v Alloy, Bintao Wu, Zengxi Stephen Pan, Donghong Ding, Dominic Cuiuri, Hui Jun Li, Zhenyu Fei

Faculty of Engineering and Information Sciences - Papers: Part B

To achieve improved microstructure and mechanical properties, an innovative wire arc additive manufacturing (WAAM) process with forced interpass cooling using compressed CO₂ was employed in this study to fabricate Ti6Al4V thin-walled structures. The effects of various interpass temperatures and rapid forced cooling on deposition geometry, surface oxidation, microstructural evolution, and mechanical properties of the fabricated part were investigated by laser profilometry, optical microscopy (OM), scanning electron microscopy (SEM), hardness testing and mechanical tensile testing. Results show that the microstructural evolution and mechanical properties of the deposited metal are not greatly affected by an increasing interpass temperature, however, the deposited …

Shift-Tail Equivalence And An Unbounded Representative Of The Cuntz-Pimsner Extension, Magnus Goffeng, Bram Mesland, Adam C. Rennie

Faculty of Engineering and Information Sciences - Papers: Part B

We show how the fine structure in shift-tail equivalence, appearing in the non-commutative geometry of Cuntz-Krieger algebras developed by the first two listed authors, has an analogue in a wide range of other Cuntz-Pimsner algebras. To illustrate this structure, and where it appears, we produce an unbounded representative of the defining extension of the Cuntz-Pimsner algebra constructed from a finitely generated projective bi-Hilbertian module, extending work by the third listed author with Robertson and Sims. As an application, our construction yields new spectral triples for Cuntz and Cuntz-Krieger algebras and for Cuntz-Pimsner algebras associated to vector bundles twisted by an …

A New Elementary Proof Of Euler's Continued Fractions, Joseph Tonien

Faculty of Engineering and Information Sciences - Papers: Part B

A new elementary proof of Euler's continued fractions

The Impact Of Imaging Modality (Ct Vs Mri) And Patient Position (Supine Vs Prone) On Tangential Whole Breast Radiation Therapy Planning, Kylie L. Dundas, Elise M. Pogson, Vikneswary Batumalai, Geoff P. Delaney, Miriam M. Boxer, Mei Ling Yap, Verity Ahern, Christine Chan, Steven David, Marion Dimigen, Jennifer A. Harvey, Eng-Siew Koh, Karen Lim, George Papadatos, Elizabeth Lazarus, Joseph Descellar, Peter E. Metcalfe, Lois C. Holloway

Faculty of Engineering and Information Sciences - Papers: Part B

Purpose

The purpose of this study was to evaluate the impact of magnetic resonance imaging (MRI) versus computed tomography (CT)-derived planning target volumes (PTVs), in both supine and prone positions, for whole breast (WB) radiation therapy.

Methods and materials

Four WB radiation therapy plans were generated for 28 patients in which PTVs were generated based on CT or MRI data alone in both supine and prone positions. A 6-MV tangential intensity modulated radiation therapy technique was used, with plans designated as ideal, acceptable, or noncompliant. Dose metrics for PTVs and organs at risk were compared to analyze any differences …

Development And Evaluation Of An Mre-Based Absorber With Two Individually Controllable Natural Frequencies, Jie Yang, Shuaishuai Sun, J Chi, Donghong Ning, Haiping Du, Shan-Wen Zhang, Weihua Li, Shixin Mao

Faculty of Engineering and Information Sciences - Papers: Part B

Adaptive tuned mass absorbers, which are based on magnetorheological elastomer (MRE) have been widely accepted for vibration absorption due to their frequency shift capability. Wider frequency bandwidth indicates more effectiveness in reducing vibrations. In order to broaden the effective bandwidth of the MRE-based absorber, this study proposes a new design consisting of an eccentric mass. This design enables the absorber to have two natural frequencies: the rotational natural frequency and the translational one. These two natural frequencies can be controlled separately by adjusting the MRE stiffness and the eccentric length. This design not only broadens the effective bandwidth of the …

Position Control Of A Soft Prosthetic Finger With Limited Feedback Information, Solen Kumbay-Yildiz, Rahim Mutlu, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part B

One of the challenging research questions in soft robotics is the establishment of valid mathematical models and control techniques under limited feedback conditions. A soft robotic system will typically have a continuum or monolithic body seamlessly embodying its actuation and sensing elements, accompanied by mechanical structure, and even the energy source, much like a biological system. In this study, we propose a relay sliding mode controller based on the input - output model (RSMC-IO), which is a simple but effective control approach that does not require a complete system model, to control the tip position of a soft prosthetic finger, …

Driver Intention Based Coordinate Control Of Regenerative And Plugging Braking For Electric Vehicles With In-Wheel Pmsms, Wenfei Li, Haiping Du, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part B

Electric vehicles have been the focus of the automotive industry in recent years. However, relatively small driving range of electric vehicles makes it not be broadly adopted in the market. Regenerative braking is one of the most effective ways to extend the endurance of electric vehicles. To sufficiently utilise the regenerative braking of electric vehicles and explore the potential of the electric motor plugging braking capability to simplify the braking system structure and reduce the cost, a new braking strategy based on the driver's braking intention and motor working characteristics is proposed. Driver's braking intention is classified as the emergency …

A 3d Approach For The Visualization Of Network Intrusion Detection Data, Wei Zong, Yang-Wai Chow, Willy Susilo

Faculty of Engineering and Information Sciences - Papers: Part B

With the increasing threat of cyber attacks, machine learning techniques have been researched extensively in the area of network intrusion detection. Such techniques can potentially provide a means for the real-time automated detection of attacks and abnormal traffic patterns. However, misclassification is a common problem in machine learning techniques for intrusion detection, and a lack of insight into why such misclassification occurs impedes the improvement of machine learning models. This paper presents an approach to visualizing network intrusion detection data in 3D. The purpose of this is to facilitate the understanding of network intrusion detection datasets using a visual representation …

Modeling Supply Network Configuration Problems With Varying Demand Profiles, Subodha Dharmapriya, Senevi Kiridena, Nagesh Shukla

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, we develop a novel multi-objective modeling approach to support supply network configuration decisions, while considering varying demand profiles. In so doing, we illustrate how such an approach could contribute to building supply network robustness and resilience. The proposed model entails two key objectives; minimizing lead time and cost across the supply network. The solution approach first employs a bidding mechanism to select a set of supply network entities that match with a given demand profile from a candidate pool of entities. It then applies the popular technique known as N on-dominated Sorting Genetic Algorithm-II to generate a …

Preferred Traces On C⁎-Algebras Of Self-Similar Groupoids Arising As Fixed Points, Joan Claramunt, Aidan Sims

Faculty of Engineering and Information Sciences - Papers: Part B

Recent results of Laca, Raeburn, Ramagge and Whittaker show that any self-similar action of a groupoid on a graph determines a 1-parameter family of self-mappings of the trace space of the groupoid C⁎-algebra. We investigate the fixed points for these self-mappings, under the same hypotheses that Laca et al. used to prove that the C⁎-algebra of the self-similar action admits a unique KMS state. We prove that for any value of the parameter, the associated self-mapping admits a unique fixed point, which is a universal attractor. This fixed point is precisely the trace that extends to a KMS state on …

The Impact Of Contour Variation On Tumour Control Probability In Anal Cancer, Michael Jones, Jarad Martin, Kerwyn Y. Foo, Patrick Estoesta, Lois C. Holloway, Michael Jameson

Faculty of Engineering and Information Sciences - Papers: Part B

Background: While intensity modulated radiotherapy (IMRT) has been widely adopted for the treatment of anal cancer (AC), the added contour complexity poses potential risks. This study investigates the impact of contour variation on tumour control probability (TCP) when using IMRT for AC. Methods: Nine Australian centres contoured a single computed tomography dataset of a patient with AC. The same optimised template-based IMRT planning protocol was applied to each contour set to generate nine representative treatment plans and their corresponding dose volume histograms. A geometric analysis was performed on all contours. The TCP was calculated for each plan using the linear …

Embedding External Referencing Of Standards In Higher Education: Collaborative Relationships Are The Key, Lesley Sefcik, Simon Bernard Bedford, Peter Czech, Judith Smith, John Yorke

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

External referencing of assessment and students’ achievement standards is a growing priority area within higher education, which is being pressured by government requirements to evidence outcome attainment. External referencing benefits stakeholders connected to higher education by helping to assure that assessments and standards within courses are appropriate and comparable among institutions. External referencing takes many forms, which have different resourcing requirements, outcomes, and operational strengths and challenges. This paper describes the External Referencing of Standards (ERoS) approach developed, tested and adopted by a university consortium. ERoS draws on the strengths of existing methodologies to produce an evolved model that is …

Implementing A Student Focused Makerspace At University Of Wollongong Library, Nathan Riggir

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

Outline of the development of the Makerspace at the University of Wollongong Library, commencing in May 2017.

Connecting To Learn, Learning To Connect: Thinking Together In Asynchronous Forum Discussion, Janine Delahunty

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

2018 Elsevier Inc. This article combines a sociocultural model of classroom talk with a linguistically-oriented model (systemic functional linguistics) to explore what characterizes effective asynchronous online discussion in higher education (HE). While the benefits of discussion are commonly accepted in face-to-face learning, engaging students in effective asynchronous discussion can often be 'hit or miss' due in part to the shift to interacting asynchronously. This hybrid mode of spoken-like/written-like communication demands skills which are rarely made explicit, often with the assumption that students (and lecturers) are proficient. The combined framework presented here enabled macro- and micro-understandings of discussion forums through an …

Meet Them Where They Are: Bringing The Learning Co-Op Into The Digital Space, Kristy Newton, Courtney A. Shalavin

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

The University of Wollongong (UOW) Learning Co-Op developed an online portal to complement its physical services, providing support for the development of students’ academic, information, and digital literacies. A user-centred design process was used to identify student needs and create meaningful, relevant content. The project employed student partners to ensure the inclusion of a strong student voice, and integrated a peer-led design strategy where the student partners identified and advocated for the needs of other students. The project utilised a collaborative approach to the creation of resources and service models, working with UOW students and staff from multiple professional units.

Confrontational Continuum: Modernism And The Psychedelic Art Of Martin Sharp, Michael K. Organ

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

The Australian artist Martin Sharp (1942-2013) produced a series of psychedelic artworks in London between 1966-8, the most famous of which were the Disraeli Gears record cover for rock group Cream and the Bob Dylan Blowin’ in the Mind poster. Sharp’s work exemplifies the connection between early twentieth century Modernist art movements, Pop art and acid-induced psychedelia of the 1960s. In addition, the poster Max Ernst: The Birdman from 1967, represents a homage to Dada and Surrealism, with special reference to anarchy, desire, and freedom of expression. In the spirit of Dada, the poster is meaningfully confrontational, exposing the darker …

A Problem Of Berry And Knotted Zeros In The Eigenfunctions Of The Harmonic Oscillator, Alberto Enciso, David James Hartley, Daniel Peralta-Salas

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

European Mathematical Society 2018 We prove that, given any finite link L in R 3 , there is a high-energy complex-valued eigenfunction of the harmonic oscillator such that its nodal set contains a union of connected components diffeomorphic to L. This solves a problem of Berry on the existence of knotted zeros in bound states of a quantum system.

Dislocations Of Arbitrary Topology In Coulomb Eigenfunctions, Alberto Enciso, David James Hartley, Daniel Peralta-Salas

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

For any finite link L in R3 we prove the existence of a complex-valued eigenfunction of the Coulomb Hamiltonian such that its nodal set contains a union of connected components diffeomorphic to L. This problem goes back to Berry, who constructed such eigenfunctions in the case where L is the trefoil knot or the Hopf link and asked the question about the general result.

Surveying The Digital Literacy Landscape For Academic And Professional Staff In Higher Education, Elaine Huber, Courtney A. Shalavin

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

In order to produce digitally literate graduates, it is necessary for institutions to have digitally literate staff. While this statement seems clear, the commitment and approach of Australian Higher Education institutions to professional learning focused on digital literacies is not. This paper describes initial steps towards clarifying the place of digital literacies in the context of professional learning for higher education staff. The researchers canvassed 31 higher education websites to identify institutional approaches, and conducted a targeted literature review to uncover models and practices that could have transposal value to institutions. This paper reports on which institutions are publicly committed, …

Catching 'Tears In The Rain': Blade Runner And The Archiving Of Memory And Identity, Michael K. Organ, Susan Jones, Anthony M. Rice, Grant C. White

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

Blade Runner presents the ultimate archival dilemma: to preserve or "retire" (dispose of) a sentient record. Beneath the Hollywood love story lays a dystopian view of the future wherein the line between human and humanoid is blurred through the existence of biorobotic androids known as replicants. Beyond this, new gadgets, systems and technologies dazzle in futuristic, though familiar, landscapes. And what do replicants, being human, EMP blackouts and origami have to do with archives? Answers reside in their present and possible relation to aspects of the world of the archivist in the modern era, as evidenced through technological innovation, the …

Don't Just Stay In Your Lane: Developing Digital Literacies Freestyle, Courtney A. Shalavin

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

Digital literacies are no longer optional for higher education staff - they are a necessity. However, comprehensive solutions on how to develop digital literacies in the workforce remain elusive. While many institutions implement clear definitions and frameworks in policies at the macro-level, rigid application of these tools is ineffective at a micro-level wherein personalized approach is needed. This paper describes the approach of a pilot professional development program at a regional university library that scopes and evolves to meet the needs of the workforce. The program is guided by design principles focusing on personalization and flexibility. In the future, the …

The Importance Of Impact, Tish Wagner, Michael Organ

Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers

A presentation on the importance of impact in regards to research publications - why it matters; how to create impact for a program and school; and how to keep and grow that impact globally through the use of an open access institutional repository. An example of the bepress Digital Commons repository at the University of Wollongong, Australia, is provided.