Social and Behavioral Sciences Commons^™

Experimental And Numerical Study Of Micro Deep Drawing, Liang Luo, Zhengyi Jiang, Dongbin Wei, Kenichi Manabe, Hideki Sato

Faculty of Engineering and Information Sciences - Papers: Part A

Micro forming is a key technology for an industrial miniaturisation trend, and micro deep drawing (MDD) is a typical micro forming method. It has great advantages comparing to other micro manufacturing methods, such as net forming ability, mass production potential, high product quality and complex 3D metal products fabrication capacity. Meanwhile, it is facing difficulties, for example the so-called size effects, once scaled down to micro scale. To investigate and to solve the problems in MDD, a combined micro blanking-drawing machine is employed and an explicit-implicit micro deep drawing model with a voronoi blank model is developed. Through heat treatment …

Tour-Based Travel Mode Choice Estimation Based On Data Mining And Fuzzy Techniques, Nagesh Shukla, Jun Ma, Rohan Wickramasuriya, Nam N. Huynh, Pascal Perez

Faculty of Engineering and Information Sciences - Papers: Part A

No abstract provided.

Development Of An Mre Adaptive Tuned Vibration Absorber With Self-Sensing Capability, Shuaishuai Sun, Jian Yang, Weihua Li, Huaxia Deng, Haiping Du, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, self-sensing technology was introduced into an adaptive tuned vibration absorber, incorporating a laminated magnetorheological elastomer (MRE) structure, a hybrid magnetic system and a self-sensing component. The adoption of the laminated MRE structure and the hybrid magnetic system enables the absorber to have higher lateral flexibility and a wider effective frequency range. The integration of the self-sensing capability allows the absorber to operate without sensors and, at the same time, greatly reduces costs, required space and maintenance. A series of experiments were conducted to measure the frequency shift property, to verify the self-sensing capability and to evaluate its …

Model-Based Correction For Scatter And Tailing Effects In Simultaneous 99mtc And 123i Imaging For A Cdznte Cardiac Spect Camera, Maria Holstensson, Kjell Erlandsson, Gavin Poludniowski, Simona Ben-Haim, Brian F. Hutton

Faculty of Engineering and Information Sciences - Papers: Part A

2015 Institute of Physics and Engineering in Medicine. An advantage of semiconductor-based dedicated cardiac single photon emission computed tomography (SPECT) cameras when compared to conventional Anger cameras is superior energy resolution. This provides the potential for improved separation of the photopeaks in dual radionuclide imaging, such as combined use of ^99mTc and ¹²³I . There is, however, the added complexity of tailing effects in the detectors that must be accounted for. In this paper we present a model-based correction algorithm which extracts the useful primary counts of ^99mTc and ¹²³I from projection data. Equations describing the …

Energy Spectra Considerations For Synchrotron Radiotherapy Trials On The Id17 Bio-Medical Beamline At The European Synchrotron Radiation Facility, Jeffrey C. Crosbie, Pauline Fournier, Stefan Bartzsch, Mattia Donzelli, Iwan Cornelius, Andrew W. Stevenson, Herwig Requardt, Elke Brauer-Krisch

Faculty of Engineering and Information Sciences - Papers: Part A

The aim of this study was to validate the kilovoltage X-ray energy spectrum on the ID17 beamline at the European Synchrotron Radiation Facility (ESRF). The purpose of such validation was to provide an accurate energy spectrum as the input to a computerized treatment planning system, which will be used in synchrotron microbeam radiotherapy trials at the ESRF. Calculated and measured energy spectra on ID17 have been reported previously but recent additions and safety modifications to the beamline for veterinary trials warranted a fresh investigation. The authors used an established methodology to compare X-ray attenuation measurements in copper sheets (referred to …

The Practice Of An Mse Wall/Embarkment On A Hard Foundation: A Case Study From Phitsanulok, Thailand, P Baral, D T. Bergado, C Rujikiatkamjorn, B Indraratna

Faculty of Engineering and Information Sciences - Papers: Part A

The Department of Highways (DOHs), Thailand, designed and constructed a 6m high reinforced earth embankment near Highway No.11 Phitsanulok-Uttaradit in Thailand. Two types of reinforced earth embank-ment were constructed; on one side, bags of soil were used to construct a Reinforced Steep Slope (RSS) with a 70 degree sloping face and on the other side, a Mechanically Stabilized Earth Wall (MSEW) was constructed with a vertical concrete panel as a facing. The test embankment was 18m long and 15m wide at the top. Three types of polymeric geogrid reinforcements were installed in the reinforced steep slope (RSS) facing and two …

Symmetries And Solutions Of The Non-Autonomous Von Bertalanffy Equation, Maureen P. Edwards, R Anderssen

Faculty of Engineering and Information Sciences - Papers: Part A

For growth in a closed environment, which is indicative of the situation in laboratory experiments, autonomous ODE models do not necessarily capture the dynamics under investigation. The importance and impact of a closed environment arise when the question under examination relates, for example, to the number of the surviving microbes, such as in a study of the spoilage and contamination of food, the gene silencing activity of fungi or the production of a chemical compound by bacteria or fungi. Autonomous ODE models are inappropriate as they assume that only the current size of the population controls the growth-decay dynamics. This …

Lower Bounds On The Kobayashi Metric Near A Point Of Infinite Type, Tran Vu Khanh

Faculty of Engineering and Information Sciences - Papers: Part A

2015 Mathematica Josephina, Inc. Under a potential-theoretical hypothesis named f-property which holds for all pseudoconvex domains of finite type and many examples of infinite type, we give a new method for constructing a family of bumping functions and hence plurisubharmonic peak functions with good estimates. The rate of lower bounds on the Kobayashi metric follows by the estimates of peak functions. The application to the continuous extendibility of proper holomorphic maps is given.

Fatigue Properties Of Intact Sandstone In Pre And Post-Failure And Its Implication To Vibratory Rock Cutting, M N. Badge, Shivakumar Karekal

Faculty of Engineering and Information Sciences - Papers: Part A

The pre-and post-failure fatigue properties of intact sandstone subjected to uni-axial cyclical loading in the laboratory is presented with its possible implication to vibratory rock cutting. The fatigue results subjected to sinusoidal, ramp and square waveforms at cyclic loading frequency of 5 Hz and peak amplitude of 0.05 mm is discussed herewith. It is observed that fatigue behaviour is a function of the dynamic energy of the load and the shape of the waveform. From the presented results, the practical significance of the behaviour of rock and rock masses within the excavation systems subjected to cyclic loads, especially in the …

Antibacterial Performance Of Bovine Lactoferrin-Fish Gelatine Electrospun Membranes, J Padrão, Raul Machado, Margarida Casal, Senentxu Lanceros-Méndez, L R. Rodrigues, F Dourado, Vitor Sencadas

Faculty of Engineering and Information Sciences - Papers: Part A

The increase of antibiotic resistant microorganisms urged the development and synthesis of novel antimicrobial biomaterials to be employed in a broad range of applications, ranging from food packaging to medical devices. This work describes the production and characterization of a protein-based electrospun fibrous membranes bearing antimicrobial properties. Its composition is exclusively comprised of proteins, with fish gelatine as structural matrix and bovine lactoferrin (bLF) as the active antimicrobial agent. The bLF bactericidal effect was determined against clinical isolates of Escherichia coli and Staphylococcus aureus through microdilution assays. Two distinctive methods were used to incorporate bLF into the fish gelatine nanofibres: …

The Role Of Pyrimidine And Water As Underlying Molecular Constituents For Describing Radiation Damage In Living Tissue: A Comparative Study, Martina C. Fuss, L Ellis-Gibbings, Darryl B. Jones, M J. Brunger, Francisco Blanco, A Muñoz, Paulo Limao-Vieira, Gustavo Garcia

Faculty of Engineering and Information Sciences - Papers: Part A

Water is often used as the medium for characterizing the effects of radiation on living tissue. However, in this study, charged-particle track simulations are employed to quantify the induced physicochemical and potential biological implications when a primary ionising particle with energy 10 keV strikes a medium made up entirely of water or pyrimidine. Note that pyrimidine was chosen as the DNA/RNA bases cytosine, thymine, and uracil can be considered pyrimidine derivatives. This study aims to assess the influence of the choice of medium on the charged-particle transport, and identify how appropriate it is to use water as the default medium …

A Vibrotactilve And Plantar Force Measurement Based Biofeedback System: Paving The Way Towards Wearable Devices Improving Balance, Christina Ma, Anson Wan, Duo Wong, Yong-Ping Zheng, Winson Lee

Faculty of Engineering and Information Sciences - Papers: Part A

Although biofeedback systems have been used to improve balance with success, they were confined to hospital training applications. Little attempt has been made to investigate the use of in-shoe plantar force measurement and wireless technology to turn hospital training biofeedback systems into wearable devices. This research developed a wearable biofeedback system which detects body sway by analyzing the plantar force and provides users with the corresponding haptic cues. The effects of this system were evaluated in thirty young and elderly subjects with simulated reduced foot sensation. Subjects performed a Romberg test under three conditions: (1) no socks, system turned-off; (2) …

Robust Position Control Of A Novel Series Elastic Actuator Via Disturbance Observer, Emre Sariyildiz, Gong Chen, Haoyong Yu

Faculty of Engineering and Information Sciences - Papers: Part B

This paper proposes a new robust position control method for a novel series elastic actuator (SEA). It is a wellknown fact that SEAs provide many benefits in force control, e.g., lower reflected inertia and impedance, greater shock tolerance, safety, and so on. However, current SEA designs have a common performance limitation due to the compromise on the selection of spring stiffness. The performance of an SEA can be significantly improved by changing the stiffness of the spring; however, designing a variable-stiffness SEA is a quite challenging task. In this paper, a novel variable-stiffness SEA, which can relax the fundamental performance …

Compensation Of Backlash For Geared Drive Systems And Thrust Wires Used In Teleoperation, D Prasanga, Emre Sariyildiz, Kouhei Ohnishi

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents a unique method to cancel the backlash present in geared drive systems and thrust-wire systems. Large-sized robots need larger actuators with a high inertia to obtain the desired amount of torque. However, the use of large actuators will increase the effect of gravity. To compensate for the gravitational effect, motors with a high torque are again necessary. Therefore, geared drive systems are used to obtain higher torques and decrease the actuator size. However, adding gears will create a backlash problem. Moreover, when it is necessary to make lighter robots, thrust wires can be used to transmit the …

A Practical Tuning Method For The Robust Pid Controller With Velocity Feed-Back, Emre Sariyildiz, Haoyong Yu, Kouhei Ohnishi

Faculty of Engineering and Information Sciences - Papers: Part B

Proportional-Integral-Derivative (PID) control is the most widely used control method in industrial and academic applications due to its simplicity and efficiency. Several different control methods/algorithms have been proposed to tune the gains of PID controllers. However, the conventional tuning methods do not have sufficient performance and simplicity for practical applications, such as robotics and motion control. The performance of motion control systems may significantly deteriorate by the nonlinear plant uncertainties and unknown external disturbances, such as inertia variations, friction, external loads, etc., i.e., there may be a significant discrepancy between the simulation and experiment if the robustness is not considered …

Walking Paths To And From A Goal Differ: On The Role Of Bearing Angle In The Formation Of Human Locomotion Paths, Manish Sreenivasa, Katja Mombaur, Jean-Paul Laumond

Faculty of Engineering and Information Sciences - Papers: Part B

The path that humans take while walking to a goal is the result of a cognitive process modulated by the perception of the environment and physiological constraints. The path shape and timing implicitly embeds aspects of the architecture behind this process. Here, locomotion paths were investigated during a simple task of walking to and from a goal, by looking at the evolution of the position of the human on a horizontal (x,y) plane. We found that the path while walking to a goal was not the same as that while returning from it. Forward-return paths were systematically separated by 0.5-1.9m, …

Occurrence Of Perfluoroalkyl And Polyfluoroalkyl Substances In The Water Environment And Their Removal In A Water Treatment Process, Biplob Kumar Pramanik

Faculty of Engineering and Information Sciences - Papers: Part B

Perfluoroalkyl and polyfluoroalkyl substances (PFASs) such as perfluorooctanoic acid (PFOA), and perfluorooctane sulfonate (PFOS) are found in aquatic environments worldwide. The presence of these compounds in the water environment is still unclear, even though direct or indirect discharges of these compounds from industries to the aquatic environment are the potential routes. In this paper, PFOA and PFOS contamination of aquatic ecosystems, and their removal efficiency by different water treatment processes are reviewed. Typically, PFOS and PFOA contamination levels are higher in industrialized countries than in non-industrial countries. Coagulation, sand filtration, sedimentation, oxidation and disinfection are mostly ineffective in removing PFASs …

Server-Aided Verification Signature With Privacy For Mobile Computing, Lingling Xu, Jin Li, Shaohua Tang, Joon Sang Baek

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.

Development And Implementation Of A Flipped-Classroom Delivery In Engineering Computing And Analysis For First Year Engineering Students, David B. Hastie, Montserrat Ros, Brad Stappenbelt, Senevi Kiridena

Faculty of Engineering and Information Sciences - Papers: Part B

University of Wollongong recently undertook a major restructure of its academic and professional units, after the appointment of a new Vice Chancellor in 2012. As a result, the previous 11 faculties have been merged and rationalised into five new faculties. The Faculty of Engineering and the Faculty of Informatics merged to become the Faculty of Engineering and Information Sciences (EIS), consisting of six schools representing a total of 13 disciplines. Following the restructuring, EIS made the decision to develop a new common first year curriculum for all engineering undergraduate programs, spanning nine disciplines, they being; civil, mining, environmental, electrical, computer, …

Systems Science And Systems Thinking For Public Health: A Systematic Review Of The Field, Gemma Carey, Eleanor Malbon, Nicole Carey, Andrew Joyce, Brad Crammond, Alan L. Carey

Faculty of Engineering and Information Sciences - Papers: Part B

Objectives: This paper reports on findings from a systematic review designed to investigate the state of systems science research in public health. The objectives were to: (1) explore how systems methodologies are being applied within public health and (2) identify fruitful areas of activity.

Design: A systematic review was conducted from existing literature that draws on or uses systems science (in its various forms) and relates to key public health areas of action and concern, including tobacco, alcohol, obesity and the social determinants of health.

Data analysis: 117 articles were included in the review. An inductive qualitative content analysis was …

Axial Compression Tests On Hybrid Frp-Steel-Concrete Columns With High-Strength Steel Plates, Tao Yu, Lip H. Teh, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

The applications of high-strength steel (HSS) products to civil engineering structures have been limited by elastic local buckling, by the perceived lack of ductility, and by the perceived difficulties of welding such steels. Against this background, the authors have recently proposed a new hybrid column (i.e. High Strength Steel Plate-Concrete Filled FRP Tube or HSSP-CFFT) consisting of an outer FRP tube, a concrete in-fill and a number of encased high-strength steel plates that are connected to each other by bolted angle brackets at discrete elevations. The new column offers an ideal opportunity for the use of HSS plates in construction, …

An Experimental And Numerical Study Of Micro Deep Drawing Of Sus304 Circular Cups, Liang Luo, Zhengyi Jiang, Dongbin Wei, Kenichi Manabe, Hideki Sato, Xiaofeng He, Pengfei Li

Faculty of Engineering and Information Sciences - Papers: Part B

Micro deep drawing is a promising technology for mass production of complex 3D micro metal products. Significant size effects at a micro scale, however, obstruct application of this technology and block utilisation of traditional finite element method (FEM). Therefore, a micro tensile test system was developed to obtain accurate material properties considering size effects. Subsequently, a Voronoi blank model was developed for the micro scale simulation. Moreover, micro deep drawing experiments were conducted and their results were compared with the simulation results. The simulation results have a good agreement with the experimental data. Furthermore, the wrinkling at the cup mouth …

Some Geometric Properties Of The Solutions Of Complex Multiaffine Polynomials Of Degree Three, Chayne Planiden, Hristo Sendov

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper we consider complex polynomials p(z) of degree three with distinct zeros and their polarization P(z1, z2, z3) with three complex variables. We show, through elementary means, that the variety P(z1, z2, z3)=0 is birationally equivalent to the variety z1z2z3+1=0. Moreover, the rational map certifying the equivalence is a simple Möbius transformation. The second goal of this note is to present a geometrical curiosity relating the zeros of z&P(z, z, zk) for k=1, 2, 3, where (z1, z2, z3) is arbitrary point on the variety P(z1, z2, z3)=0.

The Use Of Coastal Reservoirs And Spp Strategy To Provide Sufficient High Quality Water To Coastal Communities, Shu-Qing Yang, Samuel Kelly

Faculty of Engineering and Information Sciences - Papers: Part B

Water quality-induced water shortage is emerging as one of the main threats for the growth of the world's population and economic development, especially for coastal cities in developing nations. This paper discusses how to supply enough sufficiently clean water to such cities using the technologies of coastal reservoirs and wetland pre-treatments, as well as employing the SPP strategy. The so-called coastal reservoir is defined as a freshwater reservoir situated in seawater which sources its water from river runoff; to improve its water quality, a wetland is used to pre-treat the runoff that is potentially polluted by domestic, agricultural and industrial …

Embedding Moocs In Academic Programs As A Part Of Curriculum Transformation: A Pilot Case Study, Sarah R. Lambert, Irit Alony

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

The University of Wollongong’s first locally developed and hosted Massive Open Online Course (MOOC) “The Reluctant Mathematician” was a highly scaffolded MOOC designed to support stressed and low-efficacy maths learners. It was developed to lift maths skills at our university and also in the community – where maths skills continue to be a challenge and in some cases a source of stress. Internally the MOOC provided an alternative online way to support students who struggle with mathematics at university level, and as a complement to the existing face to face services. This paper describes a successful approach to using MOOCs …

Curriculum Design For Assuring Learning - Leading The Way: Final Report, Romy Lawson

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

Executive Summary: Assuring learning is a vital element in educational practice. It is a feedback mechanism for learning and teaching practice, allowing educators to review students' achievements in relation to the expectations set for the learning experience, and to use this data to continually inform practice. All those involved in education should be engaged with assuring learning, but in the current standards-driven climate, it is regularly viewed as a compliance activity and a burden that encroaches on teaching and research time. This view needs to be dismissed: a cultural change is required to encourage mindsets that recognise that assurance of …

Data Driven Decision Making In Chemistry First Year Subjects, Simon Bernard Bedford, Jennifer A. Heath

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

Analytics is not a new area of endeavour with many industries and other professions being well ahead of the education sector in the uptake of advanced analytics methods and tools (Abdous, He, & Yen, 2012; Dziuban, Moskal, Cavanagh, & Watts, 2012). Wagner and Ice (2012) describe higher education as being on the early side of the analytics adoption curve when compared to retail, telecommunications, financial services and manufacturing. Analytics is often used in higher education institutions to identify and also predict individual students who may be 'at risk' (Fritz, 2011).

Transforming Assessment Practice: Evidencing And Benchmarking Student Learning Outcomes In Chemistry, Siegbert Schmid, Simon Bernard Bedford, Adam Bridgeman, Glennys A. O'Brien, Ian Jamie, Gwen Lawrie, Kieran Lim, Samuel Priest, Simon Pyke, Madeleine Schultz, Daniel Southam

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

Higher Education in Australia is in a phase of rapid change due to a number of regulatory changes. Over the past five years the Australian Chemistry community has agreed on a list of Chemistry Threshold Learning Outcomes (CTLOs) that every student graduating from an Australian University will have attained. In addition, the Royal Australian Chemical Institute (RACI) has changed its accreditation process for Chemistry degrees and now uses these CTLOs as the basis for accreditation. Therefore, it is now paramount to ensure that our assessment items allow students to demonstrate attainment of the CTLOs during a degree [1]. The "Assessing …

Working With The Research Services Office, Michael K. Organ

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

The Australian and New Zealand university sector presents numerous permutations in regards to how institutional repository (IR) managers work with their local research office. The repository may be managed by the research office, the library (common), the information technology (IT) section, central administration (rare) and either singly or in a mixture of the above. At the University of Wollongong (UOW), for example, the open access institutional repository was set up in 2005 with the assistance of funding from the Research Services Office (RSO). The UOW Library has, since 2006, managed the repository – branded Research Online (RO) - and the …