Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

University of Wollongong

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3421 - 3450 of 14367

Full-Text Articles in Social and Behavioral Sciences

Topological Spaces Associated To Higher-Rank Graphs, Alexander Kumjian, David Pask, Aidan Sims, Michael F. Whittaker Jan 2016

Topological Spaces Associated To Higher-Rank Graphs, Alexander Kumjian, David Pask, Aidan Sims, Michael F. Whittaker

Faculty of Engineering and Information Sciences - Papers: Part A

We investigate which topological spaces can be constructed as topological realisations of higher-rank graphs. We describe equivalence relations on higher-rank graphs for which the quotient is again a higher-rank graph, and show that identifying isomorphic co-hereditary subgraphs in a disjoint union of two rank-k graphs gives rise to pullbacks of the associated C*-algebras. We describe a combinatorial version of the connected-sum operation and apply it to the rank-2-graph realisations of the four basic surfaces to deduce that every compact 2-manifold is the topological realisation of a rank-2 graph. We also show how to construct k-spheres and wedges of k-spheres as …

Go to article

The Future Of Informatics In Aged Care: An International Perspective, Gregory Alexander, Patti Abbott, Mariann Fossum, Ryan J. Shaw, Ping Yu, Mary M. Alexander Jan 2016

The Future Of Informatics In Aged Care: An International Perspective, Gregory Alexander, Patti Abbott, Mariann Fossum, Ryan J. Shaw, Ping Yu, Mary M. Alexander

Faculty of Engineering and Information Sciences - Papers: Part A

The panel will share global technology research initiatives in aged care. Panel objectives: 1) Describe international informatics research initiatives by experts addressing health needs of the aged, 2) Contrast health technologies used to manage aging patients, and 3) Explain challenges and opportunities to improve healthcare informatics for aging patients. Intended audience: researchers, consumers, practitioners, vendors, care providers, and policy makers with interests in aged care technology design, development, implementation and management.

Go to article

Transient Cfd Modelling Of Low-Temperature Spontaneous Heating Behaviour In Multiple Coal Stockpiles With Wind Forced Convection, Jian Zhang, Yuntao Liang, Ting X. Ren, Zhongwei Wang, Gongda Wang Jan 2016

Transient Cfd Modelling Of Low-Temperature Spontaneous Heating Behaviour In Multiple Coal Stockpiles With Wind Forced Convection, Jian Zhang, Yuntao Liang, Ting X. Ren, Zhongwei Wang, Gongda Wang

Faculty of Engineering and Information Sciences - Papers: Part A

Spontaneous heating of coal stockpile has long been a thermal dynamic hazard during coal storage, processing, and transport. A transient non-equilibrium thermal CFD model has been developed to study the low-temperature self-heating behaviour of coal in multiple stockpiles under different prevailing wind conditions. Modelling results from the initial steady wind flow simulation indicate that a wake region can be induced on the leeward side of each coal stockpile. Pressure coefficient drops when the wind stream encounters or leaves a stockpile and the pressure coefficient profiles of multiple stockpiles tend to have more resemblance with a wider spacing. The first stockpile …

Go to article

Stress-Dilatancy Behaviour Of Compacted Coalwash As A Landfill Option, Ana Heitor, Chazath Kaliboullah, Buddhima Indraratna, Cholachat Rujikiatkamjorn Jan 2016

Stress-Dilatancy Behaviour Of Compacted Coalwash As A Landfill Option, Ana Heitor, Chazath Kaliboullah, Buddhima Indraratna, Cholachat Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part A

Coalwash (CW) is granular waste by-product that results from the operation of the local coal mining industry. The reuse and recycling of this material in earthwork construction project as landfill option, is attractive from both economic and environmental perspectives. This paper presents an experimental study on compacted CW material prepared at different relative compaction levels. First the basic materials index properties are described and the stress-dilatancy behaviour is examined through a series of drained triaxial compression tests. The experimental data suggests that the different relative compaction levels exhibit different stress strain behaviour but show some degree of similarity in terms …

Go to article

Just For You: How To Create Sounds That Only You Can Hear In A Venue, Jacob Donley, Christian H. Ritz Jan 2016

Just For You: How To Create Sounds That Only You Can Hear In A Venue, Jacob Donley, Christian H. Ritz

Faculty of Engineering and Information Sciences - Papers: Part A

Picture your typical busy cafe or restaurant that's full of people. The diners are usually all forced to listen to the same music that's pumped into the venue via the speakers.

Go to article

Compressive Behavior Of Frp-Confined Concrete-Encased Steel Columns, Tao Yu, G Lin, Shi Shun Zhang Jan 2016

Compressive Behavior Of Frp-Confined Concrete-Encased Steel Columns, Tao Yu, G Lin, Shi Shun Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

FRP-confined concrete-encased steel I-section columns (FCSCs) are an emerging form of hybrid columns. An FCSC consists of an outer FRP tube, an encased steel section and a concrete infill. The FCSCs possess many advantages over conventional reinforced concrete columns, including the excellent corrosion resistance, excellent ductility and ease for construction. Existing studies on FCSCs, however, have been rather limited. This paper presents a combined experimental and theoretical study on the behavior of FCSCs under concentric and eccentric compression. The experimental program included the testing of a total of 14 specimens, with the main variables being the section configuration, the thickness …

Go to article

Application Of Shock Mats In Rail Track Foundation Subjected To Dynamic Loads, Sinniah Navaratnarajah, Buddhima Indraratna, Sanjay Nimbalkar Jan 2016

Application Of Shock Mats In Rail Track Foundation Subjected To Dynamic Loads, Sinniah Navaratnarajah, Buddhima Indraratna, Sanjay Nimbalkar

Faculty of Engineering and Information Sciences - Papers: Part A

Rail track substructure (ballast, subballast and subgrade) is the most essential component of the railway system in view of track stability. The ballast is the largest component of the track substructure and it is the key load-bearing stratum packed with rock aggregates underneath and around the sleepers, thereby providing structural support against dynamic stresses caused by moving trains. However under large dynamic stresses exerted by heavy haul and high speed trains, the degradation of track substructure including ballast becomes significant. This in turn affects the track stability and creates frequent maintenance, thus increasing the life cycle cost of the rail …

Go to article

Assessment Of Interface Shear Behaviour Of Sub-Ballast With Geosynthetics By Large-Scale Direct Shear Test, Mohammad Mahdi Biabani, Buddhima Indraratna, Sanjay Nimbalkar Jan 2016

Assessment Of Interface Shear Behaviour Of Sub-Ballast With Geosynthetics By Large-Scale Direct Shear Test, Mohammad Mahdi Biabani, Buddhima Indraratna, Sanjay Nimbalkar

Faculty of Engineering and Information Sciences - Papers: Part A

A series of large-scale direct shear test were conducted to study the interface shear strength of subballast reinforced with different types of geomembranes and geogrids. The impact of normal stress (σn), shearing rate (SR), relative density (DR) and open area (OA%) on the behaviour of granular material was investigated in unreinforced and reinforced condition. The results revealed that the performance of material was markedly influenced by σn and OA. The results also showed that geogrids provided a greater value of passive resistance owing to have transverse ribs, but the mobilised passive resistance became smaller with increase in OA. The triaxial …

Go to article

Size Optimization Of A Magnetic System For Drug Delivery With Capsule Robots, Fredy Munoz, Gursel Alici, Weihua Li, Metin Sitti Jan 2016

Size Optimization Of A Magnetic System For Drug Delivery With Capsule Robots, Fredy Munoz, Gursel Alici, Weihua Li, Metin Sitti

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, we present a methodology for the size optimization of an external magnetic system made of arc-shaped permanent magnets (ASMs). This magnetic system is able to remotely actuate a drug-release module embedded in a prototype of a capsule robot. The optimization of the magnetic system is carried out by using an accurate analytical model that is valid for any arbitrary dimensions of the ASMs. By using this analytical model, we perform parametric studies and conduct a statistical analysis [analysis of variance (ANOVA)] to investigate efficient ways to distribute the volume of the ASMs so that the dimensions and …

Go to article

A Sensor Fault Detection Strategy For Air Handling Units Using Cluster Analysis, Rui Yan, Zhenjun Ma, Georgios Kokogiannakis, Yang Zhao Jan 2016

A Sensor Fault Detection Strategy For Air Handling Units Using Cluster Analysis, Rui Yan, Zhenjun Ma, Georgios Kokogiannakis, Yang Zhao

Faculty of Engineering and Information Sciences - Papers: Part A

Sensors are an essential component in the control systems of air handling units (AHUs). A biased sensor reading could result in inappropriate control and thereby increased energy consumption or unsatisfied indoor thermal comfort. This paper presents an unsupervised learning based strategy using cluster analysis for AHU sensor fault detection. The historical data recorded from sensors is first pre-processed to reduce the dimensions using principal component analysis (PCA). The clustering algorithmOrdering Points to Identify the Clustering Structure (OPTICS) is then employed to identify the spatial separated data groups (i.e. clusters),which possibly indicate the occurrence of sensor faults. The data points in …

Go to article

Design And Development Of A Parametrically Excited Nonlinear Energy Harvester, Tanju Yildirim, Mergen H. Ghayesh, Weihua Li, Gursel Alici Jan 2016

Design And Development Of A Parametrically Excited Nonlinear Energy Harvester, Tanju Yildirim, Mergen H. Ghayesh, Weihua Li, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part A

An energy harvester has been designed, fabricated and tested based on the nonlinear dynamical response of a parametrically excited clamped-clamped beam with a central point-mass; magnets have been used as the central point-mass which pass through a coil when parametrically excited. Experiments have been conducted for the energy harvester when the system is excited (i) harmonically near the primary resonance; (ii) harmonically near the principal parametric resonance; (iii) by means of a non-smooth periodic excitation. An electrodynamic shaker was used to parametrically excite the system and the corresponding displacement of the magnet and output voltages of the coil were measured. …

Go to article

Effects Of Sintering Materials And Gas Conditions On Formation Of Silico-Ferrites Of Calcium And Aluminium During Iron Ore Sintering, Zhe Wang, David J. Pinson, Sheng Chew, Brian J. Monaghan, Mark Pownceby, Nathan A.S. Webster, Harold P. Rogers, Guangqing Zhang Jan 2016

Effects Of Sintering Materials And Gas Conditions On Formation Of Silico-Ferrites Of Calcium And Aluminium During Iron Ore Sintering, Zhe Wang, David J. Pinson, Sheng Chew, Brian J. Monaghan, Mark Pownceby, Nathan A.S. Webster, Harold P. Rogers, Guangqing Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

Silico-ferrites of calcium and aluminium (SFCA) are desirable phases in a high quality iron ore sinter product. The effects of sintering temperature, CaO/SiO2 ratio, sintering gas atmosphere and cooling procedure on the phase composition of sintered specimens from an industrial sinter blend were examined with focus on the formation of SFCA phases. The proportions of mineral phases in specimens sintered at 1 250-1 325°C were quantitatively examined using image analysis. SFCA can be formed at low temperatures by solid state reactions, the formation of which was enhanced by increasing temperature. Further increasing sintering temperature promoted the reduction of Fe3+ in …

Go to article

A High Availability Application Service Platform For Nuclear Power Enterprises, Zhe Sun, He Jin, Jianming Yong, Salim Al Isma'ili, Changying Li, Jun Shen Jan 2016

A High Availability Application Service Platform For Nuclear Power Enterprises, Zhe Sun, He Jin, Jianming Yong, Salim Al Isma'ili, Changying Li, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents a High Availability Application Service Platform (HAASP) and analyses its high availability. The architecture of this platform contains application server platform and high availability architecture. Application server platform consists of three major components, application release platform, which is implemented with WebLogic and WebSphere cluster, application and database platforms, which are built with Oracle RAC, and IBM Domino cluster. High availability architecture is constructed by virtual machines, distributed switches and storage pools. It employs virtualization technology to integrate physical servers and storages, where physical servers are responsible for the creation of virtual server cluster, distributed switches, storage pool …

Go to article

A Local Field Correlated And Monte Carlo Based Shallow Neural Network Model For Non-Linear Time Series Prediction, Qingguo Zhou, Huaming Chen, Hong Zhao, Gaofeng Zhang, Jianming Yong, Jun Shen Jan 2016

A Local Field Correlated And Monte Carlo Based Shallow Neural Network Model For Non-Linear Time Series Prediction, Qingguo Zhou, Huaming Chen, Hong Zhao, Gaofeng Zhang, Jianming Yong, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

Water resource problems currently are much more important in proper planning especially for arid regions, such as Gansu in China. For agricultural and industrial activities, prediction of groundwater status is critical. As a main branch of neural network, shallow artificial neural network models have been deployed in prediction areas such as groundwater and rainfall since late 1980s. In this paper, artificial neural network (ANN) model within a newly proposed algorithm has been developed for groundwater status forecasting. Having considered previous algorithms for ANN model in time series forecast, this new Monte Carlo based algorithm demonstrated a good result. The experiments …

Go to article

Development Of A Novel Phase Change Material Emulsion For Cooling Systems, Jingjing Shao, Jo Darkwa, Georgios Kokogiannakis Jan 2016

Development Of A Novel Phase Change Material Emulsion For Cooling Systems, Jingjing Shao, Jo Darkwa, Georgios Kokogiannakis

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, a novel phase change material emulsion (PCE-10) consisting of an organic PCM (RT10) and water has been developed. Its thermophysical properties such as heat of fusion, viscosity and sub-cooling temperature have been established. The chemical stability during both storage and discharge periods have also been evaluated. The results indicate low sub-cooling temperature and relatively long period of stability without any sign of segregation but the viscosity was found to be much higher than that of water.Further improvement and experimental studies into its flow characteristics are therefore being encouraged.

Go to article

A Buckling Model For The Stability Design Of Steel Columns With Intermediate Gravity Loads, Lip H. Teh, Benoit P. Gilbert Jan 2016

A Buckling Model For The Stability Design Of Steel Columns With Intermediate Gravity Loads, Lip H. Teh, Benoit P. Gilbert

Faculty of Engineering and Information Sciences - Papers: Part A

This paper points out an accurate buckling model for determining the flexural effective length of a steel column subjected to intermediate gravity loads, for applications in the 2D second-order elastic analysis based design procedure. The proposed buckling model has "notional" horizontal restraints where equivalent horizontal forces have been applied, and can be readily programmed into a structural analysis/design software. Thirty columns having various end restraints and subjected to concentrated gravity loads within their unsupported lengths are analysed to demonstrate the merits of the proposed buckling model. It is shown that, in most of the cases analysed, the proposed buckling model …

Go to article

Some Local Estimates And A Uniqueness Result For The Entire Biharmonic Heat Equation, Miles Simon, Glen Wheeler Jan 2016

Some Local Estimates And A Uniqueness Result For The Entire Biharmonic Heat Equation, Miles Simon, Glen Wheeler

Faculty of Engineering and Information Sciences - Papers: Part A

We consider smooth solutions to the biharmonic heat equation on ℝn x [0,T] for which the square of the Laplacian at time t is globally bounded from above by k0/t for some k0 in ℝ+, for all t ∈ [0,T]. We prove local, in space and time, estimates for such solutions. We explain how these estimates imply uniqueness of smooth solutions in this class.

Go to article

A Review Of Protection Systems For Distribution Networks Embedded With Renewable Generation, Joel Kennedy, Philip Ciufo, Ashish P. Agalgaonkar Jan 2016

A Review Of Protection Systems For Distribution Networks Embedded With Renewable Generation, Joel Kennedy, Philip Ciufo, Ashish P. Agalgaonkar

Faculty of Engineering and Information Sciences - Papers: Part A

The rapid growth of grid-connected embedded generation is changing the operational characteristics of power distribution networks. Amongst a range of issues being reported in the research, the effect of these changes on so-called 'traditional protection systems' has not gone without attention. Looking to the future, the possibility of microgrid systems and deliberate islanding of sections of the network will require highly flexible distribution management systems and a re-design of protection strategies. This paper explores the envisaged protection issues concerned with large penetrations of embedded generation in distribution networks extending into auto-reclosure and protection device coordination. A critical review of recently …

Go to article

The Moderating Impact Of Temporal Separation On The Association Between Intention And Physical Activity: A Meta-Analysis, Mairtin S. Mcdermott, Rajeev Sharma, Megan Andrews, Shahriar Akter, Donald Iverson, Peter Caputi, Tim Coltman, Murad Safadi Jan 2016

The Moderating Impact Of Temporal Separation On The Association Between Intention And Physical Activity: A Meta-Analysis, Mairtin S. Mcdermott, Rajeev Sharma, Megan Andrews, Shahriar Akter, Donald Iverson, Peter Caputi, Tim Coltman, Murad Safadi

Faculty of Engineering and Information Sciences - Papers: Part A

Previous meta-analyses have estimated that the intention-behaviour association in physical activity (PA) is large in magnitude. However, these prior meta-analyses have also revealed a large degree of heterogeneity, suggesting the presence of moderating variables. This study examines the impact of one such moderator, testing the hypothesis that the magnitude of the association between intention and behaviour decreases as the temporal separation between the two increases. A systematic literature search was used to identify published and unpublished studies that met the inclusion criteria. A random-effects meta-regression was conducted to test the study hypothesis. A total of 78 journal articles and 11 …

Go to article

Mechanical Fatigue Performance Of Pcl-Chondroprogenitor Constructs After Cell Culture Under Bioreactor Mechanical Stimulus, J A. Panadero, Vitor Sencadas, Sonia C.M. Silva, Clarisse Ribeiro, Vítor Correia, F M. Gama, J L. Gomez Ribelles, Senentxu Lanceros-Méndez Jan 2016

Mechanical Fatigue Performance Of Pcl-Chondroprogenitor Constructs After Cell Culture Under Bioreactor Mechanical Stimulus, J A. Panadero, Vitor Sencadas, Sonia C.M. Silva, Clarisse Ribeiro, Vítor Correia, F M. Gama, J L. Gomez Ribelles, Senentxu Lanceros-Méndez

Faculty of Engineering and Information Sciences - Papers: Part A

In tissue engineering of cartilage, polymeric scaffolds are implanted in the damaged tissue and subjected to repeated compression loading cycles. The possibility of failure due to mechanical fatigue has not been properly addressed in these scaffolds. Nevertheless, the macroporous scaffold is susceptible to failure after repeated loading- unloading cycles. This is related to inherent discontinuities in the material due to the micropore structure of the macropore walls that act as stress concentration points. In this work, chondrogenic precursor cells have been seeded in poly-e-caprolactone (PCL) scaffolds with fibrin and some were submitted to free swelling culture and others to cyclic …

Go to article

Comparison And Experiment Of Pressure Drop Of Radial And Annular Type Magnetorheological Valves, Guoliang Hu, Haiyan Li, Weihua Li Jan 2016

Comparison And Experiment Of Pressure Drop Of Radial And Annular Type Magnetorheological Valves, Guoliang Hu, Haiyan Li, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

The magnetorheological (MR) valve is a smart control mechanism using the magnetorheologcial fluid as the working fluid. The advantages of regulating pressure drop and fast response time make the valve have a promising application prospects in the hydraulic servo system, and the MR valve can also be used as a bypass valve to control the MR damper, which can be applied to the different types of vibration attenuating system. The change of pressure drop of MR valve considering radial and annular fluid flow paths was outlined through theory analysis, numerical simulation and experimental verification. The magnetized resistance gaps of both …

Go to article

Msis 2016: A Comprehensive Update Of Graduate Level Curriculum Recommendation In Information Systems, Heikki Topi, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Helena Karsten, Jun Shen, Bernard C. Y Tan, Mark F. Thouin Jan 2016

Msis 2016: A Comprehensive Update Of Graduate Level Curriculum Recommendation In Information Systems, Heikki Topi, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Helena Karsten, Jun Shen, Bernard C. Y Tan, Mark F. Thouin

Faculty of Engineering and Information Sciences - Papers: Part A

The process to revise MSIS 2006, the master's level curriculum recommendation for Information Systems, is getting close to completion. In spring and summer 2016, the joint AIS/ACM task force will continue the process of soliciting comments from various stakeholders, including the academic IS community and employers. The purpose of the AMCIS panel is to give the audience an update of the status of the MSIS 2016 revision process and provide the task force with feedback regarding the draft document. A significant portion of the session will be reserved for conversation. The task force is proposing significant changes to the curriculum …

Go to article

New Twist On Artificial Muscles, Carter S. Haines, Na Li, Geoffrey M. Spinks, Ali E. Aliev, Jiangtao Di, Ray H. Baughman Jan 2016

New Twist On Artificial Muscles, Carter S. Haines, Na Li, Geoffrey M. Spinks, Ali E. Aliev, Jiangtao Di, Ray H. Baughman

Faculty of Engineering and Information Sciences - Papers: Part A

Lightweight artificial muscle fibers that can match the large tensile stroke of natural muscles have been elusive. In particular, low stroke, limited cycle life, and inefficient energy conversion have combined with high cost and hysteretic performance to restrict practical use. In recent years, a new class of artificial muscles, based on highly twisted fibers, has emerged that can deliver more than 2,000 J/kg of specific work during muscle contraction, compared with just 40 J/kg for natural muscle. Thermally actuated muscles made from ordinary polymer fibers can deliver long-life, hysteresis-free tensile strokes of more than 30% and torsional actuation capable of …

Go to article

Rhamnolipids Produced By Indigenous Acinetobacter Junii From Petroleum Reservoir And Its Potential In Enhanced Oil Recovery, Hao Dong, Wenjie Xia, Honghong Dong, Yuehui She, Panfeng Zhu, Kang Liang, Zhongzhi Zhang, Chuanfu Liang, Zhaozheng Song, Shanshan Sun, Guangqing Zhang Jan 2016

Rhamnolipids Produced By Indigenous Acinetobacter Junii From Petroleum Reservoir And Its Potential In Enhanced Oil Recovery, Hao Dong, Wenjie Xia, Honghong Dong, Yuehui She, Panfeng Zhu, Kang Liang, Zhongzhi Zhang, Chuanfu Liang, Zhaozheng Song, Shanshan Sun, Guangqing Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

Biosurfactant producers are crucial for incremental oil production in microbial enhanced oil recovery (MEOR) processes. The isolation of biosurfactant-producing bacteria from oil reservoirs is important because they are considered suitable for the extreme conditions of the reservoir. In this work, a novel biosurfactant-producing strain Acinetobacter junii BD was isolated from a reservoir to reduce surface tension and emulsify crude oil. The biosurfactants produced by the strain were purified and then identified via electrospray ionization-Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR-MS). The biosurfactants generated by the strain were concluded to be rhamnolipids, the dominant rhamnolipids were C26H …

Go to article

A Novel Viscoelastic-Based Ferrofluid For Continuous Sheathless Microfluidic Separation Of Nonmagnetic Microparticles, Jun Zhang, Sheng Yan, Dan Yuan, Qianbin Zhao, Say H. Tan, Nam-Trung Nguyen, Weihua Li Jan 2016

A Novel Viscoelastic-Based Ferrofluid For Continuous Sheathless Microfluidic Separation Of Nonmagnetic Microparticles, Jun Zhang, Sheng Yan, Dan Yuan, Qianbin Zhao, Say H. Tan, Nam-Trung Nguyen, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

Separation of microparticles has found broad applications in biomedicine, industry and clinical diagnosis. In a conventional aqueous ferrofluid, separation of microparticles usually employs a sheath flow or two offset magnets to confine particle streams for downstream particle sorting. This complicates the fluid control, device fabrication, and dilutes the particle sample. In this work, we propose and develop a novel viscoelastic ferrofluid by replacing the Newtonian base medium of the conventional ferrofluid with non-Newtonian poly(ethylene oxide) (PEO) aqueous solution. The properties of both viscoelastic 3D focusing and negative magnetophoresis of the viscoelastic ferrofluid were verified and investigated. By employing the both …

Go to article

Building A Microsimulation Model Of Heroin Use Careers In Australia, Alison Ritter, Nagesh Shukla, Marian D. Shanahan, Van Hoang Phuong, Vu Lam Cao, Pascal Perez, Michael P. Farrell Jan 2016

Building A Microsimulation Model Of Heroin Use Careers In Australia, Alison Ritter, Nagesh Shukla, Marian D. Shanahan, Van Hoang Phuong, Vu Lam Cao, Pascal Perez, Michael P. Farrell

Faculty of Engineering and Information Sciences - Papers: Part A

Illicit heroin use is a worldwide problem, with significant health and social costs. Treatment is known to be effective in changing heroin use habits, but it often needs to be provided over a lifetime, with people cycling in and out of treatment. It is therefore important to capture a long-term perspective on heroin use careers. The aim of this project was to build a lifetime microsimulation model of heroin using careers. This paper describes the conceptual logic of the model, the input parameters and the verification and validation results. A microsimulation model was chosen as the most appropriate simulation platform …

Go to article

High-Throughput, Sheathless, Magnetophoretic Separation Of Magnetic And Non-Magnetic Particles With A Groove-Based Channel, Sheng Yan, Jie Zhang, Dan Yuan, Qianbin Zhao, J Ma, Weihua Li Jan 2016

High-Throughput, Sheathless, Magnetophoretic Separation Of Magnetic And Non-Magnetic Particles With A Groove-Based Channel, Sheng Yan, Jie Zhang, Dan Yuan, Qianbin Zhao, J Ma, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

The separation of target objects conjugated with magnetic particles is a significant application in biomedicine and clinical diagnosis. Conventional magnetophoresis-based devices use a sheath flow to pre-focus the particles into a single stream and typically operate at a low flow rate. We demonstrate in this work a high-throughput, sheathless, magnetophoretic separation of magnetic and non-magnetic beads in a groove-based channel, and also report on an interesting phenomenon where the same magnetic beads in the same microchannel, but with different setups, has a different particle tracing; a binary mixture of magnetic and non-magnetic beads in a diluted ferrofluid, is then fed …

Go to article

On The Index Of A Non-Fredholm Model Operator, Alan L. Carey, Fritz Gesztesy, Galina Levitina, F Sukochev Jan 2016

On The Index Of A Non-Fredholm Model Operator, Alan L. Carey, Fritz Gesztesy, Galina Levitina, F Sukochev

Faculty of Engineering and Information Sciences - Papers: Part A

Let {A(t)}t∈R be a path of self-adjoint Fredholm operators in a Hilbert space H , joining endpoints A± as t → ±∞. Computing the index of the operator DA = ∂ /∂ t + A acting on L2(R;H ), where A denotes the multiplication operator (A f)(t) = A(t) f (t) for f ∈ L2(R;H ) , and its relation to spectral flow along this path, has a long history, but it is mostly focussed on the case where the operators A(t) all have purely discrete spectrum.

Go to article

Video Enhanced Multiple Choice Questions - Personalising Elearning, Nadine Adams, Anne L. Porter Jan 2016

Video Enhanced Multiple Choice Questions - Personalising Elearning, Nadine Adams, Anne L. Porter

Faculty of Engineering and Information Sciences - Papers: Part A

Instructional videos have been successfully used to teach mathematical concepts to distance students. These videos allow the students to see and hear their lecturer with an added advantage of being able to stop and rewind or replay until the concept is understood. While videos facilitate student understanding, formative assessment provides both lecturer and student with an indication of the latter's mastery of a mathematical concept. Formative assessment with handwritten feedback is viewed as preferential because changing university culture means few academics have the time to provide comprehensive handwritten feedback to large numbers of students for every concept. Further, for this …

Go to article

Evaluation Of Dose From Kv Cone-Beam Computed Tomography During Radiotherapy: A Comparison Of Methodologies, Jarryd Buckley, Dean Wilkinson, Alessandra Malaroda, Peter E. Metcalfe Jan 2016

Evaluation Of Dose From Kv Cone-Beam Computed Tomography During Radiotherapy: A Comparison Of Methodologies, Jarryd Buckley, Dean Wilkinson, Alessandra Malaroda, Peter E. Metcalfe

Faculty of Engineering and Information Sciences - Papers: Part A

Three alternative methodologies to the Computed-Tomography Dose Index for the evaluation of Cone-Beam Computed Tomography dose are compared, the Cone-Beam Dose Index, IAEA Human Health Report No. 5 recommended methodology and the AAPM Task Group 111 recommended methodology. The protocols were evaluated for Pelvis and Thorax scan modes on Varian® On-Board Imager and Truebeam kV XI imaging systems. The weighted planar average dose was highest for the AAPM methodology across all scans, with the CBDI being the second highest overall. A 17.96% and 1.14% decrease from the TG-111 protocol to the IAEA and CBDI protocols for the Pelvis mode and …

Go to article

First Prev Next Last