Social and Behavioral Sciences Commons^™

Target Tracking Algorithm Using Angular Point Matching Combined With Compressive Tracking, Jing Luo, Tingting Dong, Chunyuan Zi, Chunbo Xiu, Huixin Tian, Jiangtao Xi

Faculty of Engineering and Information Sciences - Papers: Part A

To solve the problems of tracking errors such as target missing that emerged in compressive tracking (CT) algorithm due to factors such as pose variation, illumination change, and occlusion, a novel tracking algorithm combined angular point matching with compressive tracking (APMCCT) was proposed. A sparse measurement matrix was adopted to extract the Haar-like features. The offset of the predicted target position was integrated into the angular point matching, and the new target position was calculated. Furthermore, the updating mechanism of the template was optimized. Experiments on different video sequences have shown that the proposed APMCCT performs better than CT algorithm …

Logarithmic Size Ring Signatures Without Random Oracles, Clementine Gritti, Willy Susilo, Thomas Plantard

Faculty of Engineering and Information Sciences - Papers: Part A

Ring signatures enable a user to anonymously sign a message on behalf of group of users. In this paper, we propose the first ring signature scheme whose size is O(log2N), where N is the number of users in the ring. We achieve this result by improving Chandran et al.'s ring signature scheme presented at ICALP 2007. Our scheme uses a common reference string and non-interactive zero-knowledge proofs. The security of our scheme is proven without requiring random oracles.

95% Prediction Regions: Multivariate Uncertainty Quantification For Retrieved Atmospheric States, Noel A. Cressie, Sandy Burden

Faculty of Engineering and Information Sciences - Papers: Part A

Poster presentation

Multiplicative Modelling Of Four-Phase Microbial Growth, María Jesús Munoz-Lopez, Maureen P. Edwards, Ulrike Schumann, Robert S. Anderssen

Faculty of Engineering and Information Sciences - Papers: Part A

Microbial growth curves, recording the four-phases (lag, growth, stationary, decay) of the dynamics of the surviving microbes, are regularly used to support decision-making in a wide variety of health related activities including food safety and pharmaceutical manufacture. Often, the decision-making reduces to a simple comparison of some particular feature of the four-phases, such as the time at which the number of surviving microbes reaches a maximum. Consequently, in order to obtain accurate estimates of such features, the first step is the determination, from experimental measurements, of a quantitative characterization (model) of the four-phases of the growth-decay dynamics involved, which is …

Multiple Semiclassical States For Coupled Schrödinger-Poisson Equations With Critical Exponential Growth, Zhisu Liu, Shangjiang Guo, Yanqin Fang

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, we study the multiplicity of positive solutions for a class of Schrödinger-Poisson systems. Working in a variational setting, we prove the existence and multiplicity of positive solutions for the system when the Plank's constant is small and the potential satisfies some suitable conditions. We show that the number of positive solutions depends on the profile of the potential and that each solution concentrates around its corresponding global minimum point of the potential in the semi-classical limit. We also study the exponential decay.

Electro-Tactile Feedback System For A Prosthetic Hand, Daniel Pamungkas, Koren Ward

Faculty of Engineering and Information Sciences - Papers: Part A

Without the sense of touch, amputees with prosthetic hands can have difficulty holding and manipulating objects, especially when a task requires some degree of skill and tactile feedback to perform. To equip prosthetic hand users with touch sensing and tactile feedback, researchers have been experimenting with various types of force and/or tactile sensors together with various methods for delivering the tactile information to the brain. Although some success has been achieved recently with force sensors and implanted electrodes, these systems are expensive, surgically invasive and can represent an infection risk where cables emerge through the skin. Also, non-invasive tactile feedback …

Reconstructing Highly Accurate Relative Stopping Powers In Proton Computed Tomography, Blake Schultze, Paniz Karbasi, Valentina Giacometti, Tia E. Plautz, Keith Schubert, Reinhard W. Schulte

Faculty of Engineering and Information Sciences - Papers: Part A

Proton computed tomography (pCT) is an evolving tomographic imaging modality with applications in proton and ion therapy. The method allows direct reconstruction of relative stopping power of patient tissues in a 3D-fashion. The pCT collaboration has built first experimental prototypes of pCT scanning systems [1] and has developed approaches to reconstruct proton CT images based on registering the coordinates and water equivalent path length (WEPL) of individual protons traversing the scanned volume. From these data one reconstructs the object boundary (hull) and initial image based on filtered back projection (FBP), calculates a most likely path (MLP) for each proton, and …

Evaluation Of Floorcovering Abrasion Resistance By Means Of Image Processing Technique, Fatemeh Mokhtari, Seyed Mohammad Hosseini Varkiyani, Masoud Latifi

Faculty of Engineering and Information Sciences - Papers: Part B

An important factor in material quality is the time duration that materials are used (known as substance lifetime). Lifetime is a function of several factors, and among them wearing and abrasion resistances are more important than the other aspects. In addition, to the physical and mechanical properties, abrasion has a significant effect on the textiles appearance. This phenomenon considerably influences the texture of floor coverings in which continuous abrasion are applied. While the texture retention of the floorcovering during lifetime usage is quite desirable and leads to consumer satisfaction, it is necessary to evaluate the abrasion resistance of floor covering …

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 …

Bridge Deterioration Modeling By Markov Chain Monte Carlo (Mcmc) Simulation Method, N.K. Walgama Wellalage, Tieling Zhang, Richard Dwight, Khaled El-Akruti

Faculty of Engineering and Information Sciences - Papers: Part A

There are over 10 thousands rail bridges in Australia that were made of different materials and constructed at different years. Managing thousands of bridges has become a real challenge for rail bridge engineers without having a systematic approach for decision making. Developing best suitable deterioration models is essential in order to implement a comprehensive Bridge Management System (BMS). In State Based Markov Deterioration (SBMD) modeling, the main task is to estimate Transition Probability Matrixes (TPMs). In this study, Markov Chain Monte Carlo (MCMC) simulation method is utilized to estimate TPMs of railway bridge elements by overcoming some limitations of conventional …

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 …

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 Study Of The Behaviour Of Fresh And Coal Fouled Ballast Reinforced By Geogrid Using The Discrete Element Method, Ngoc Trung Ngo, Buddhima Indraratna, Cholachat Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part A

Geogrids are widely used in ballasted rail tracks for reinforcement and stabilisation. During train operation, ballast becomes contaminated or fouled due to infiltration of fines from the surface, mud pumping from the subgrade, and degradation, which decreases the performance of the geogrids. This paper presents the results of a laboratory and numerical simulation to study the effect that coal fines have on the interface between ballast and geogrid. The stress-strain behaviour of fresh and fouled ballast reinforced by geogrid was investigated via a series of large scale direct shear tests in the laboratory and numerical simulations using the Discrete Element …

Influence Of Loading Conditions During Tensile Testing On Acoustic Emission, Turbadrakh Chuluunbat, Cheng Lu, Andrii Kostryzhev, A Kiet Tieu

Faculty of Engineering and Information Sciences - Papers: Part A

The Acoustic Emission (AE) monitoring technique is widely used in mechanical and material research for detection of plastic deformation, fracture initiation and crack growth. However, the influence of AE features (such as signal amplitude, frequency, rise time and duration) on the fracture parameters (such as brittle or ductile mode of propagation and fracture propagation speed) is not completely understood. In this paper, the effect of loading conditions on fracture behavior was studied using AE monitoring during tensile testing of an aluminum alloy specimen. The fracture development was observed using a high speed video camera and was analyzed using the finite …

Dynamic Wetting Of Cao-Al2o3-Sio2-Mgo Liquid Oxide On Mgal2o4 Spinel, Hamed Abdeyazdan, Neslihan Dogan, Muhammad Rhamdhani, Michael Chapman, Brian Monaghan

Faculty of Engineering and Information Sciences - Papers: Part A

Inclusion type and content in steel is critical in steelmaking, affecting both productivity through clogging, and downstream physical properties of the steel. They are normally removed from steel by reacting with a slag (liquid oxide) phase. For efficient inclusion removal, the inclusions must attach/bond with this liquid phase. The strength of the attachment can be in part characterized by the wettability of the liquid oxide on the inclusions. In this study, the dynamic wetting of liquid oxides of the CaO-Al2O3-SiO2-MgO system on a solid spinel (MgAl2O4) substrate with low porosity of 1.9 pct was measured at 1773 K (1500 °C) …

Microgrid Capability Diagram: A Tool For Optimal Grid-Tied Operation, Athmi Jayawardena, Lasantha Meegahapola, Duane A. Robinson, Sarath Perera

Faculty of Engineering and Information Sciences - Papers: Part A

The microgrid paradigm has gained much interest in the electricity industry due to the increased penetration of distributed resources. A grid-tied microgrid can be viewed as a single generating entity or a load depending on its power export and import at the grid supply point. Similar to conventional generators, grid-tied microgrids have the potential to be able to participate in the energy market in the future to achieve technical, financial and environmental benefits. Effective participation in the energy markets requires numerous planning tools and a comprehensive understanding of the full capability of the microgrid. This paper presents a systematic approach …

Coupled Discrete Element-Finite Difference Method For Analysing The Load-Deformation Behaviour Of A Single Stone Column In Soft Soil, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn, Scott W. Sloan

Faculty of Engineering and Information Sciences - Papers: Part A

Experimental studies and numerical modelling of the deformation of soft clay stabilised by stone columns have been conducted over the past few decades. Continuum-based numerical models have provided valuable insight into the prediction of settlement, lateral deformation, and stress and strain-rate dependent behaviour of stone columns at a macroscopic scale, but because they consist of granular material such as crushed rock, gravel, and waste rock aggregates, their behaviour is influenced by inter-particle micromechanics and cannot be modelled properly using these models. In this paper a novel coupled model of the discrete element method (DEM) and finite difference method (FDM) is …