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Articles 2011 - 2040 of 2936
Full-Text Articles in Social and Behavioral Sciences
Optical Solitary Waves In Thermal Media With Non-Symmetric Boundary Conditions, Simon Louis, Timothy R. Marchant, Noel F. Smyth
Optical Solitary Waves In Thermal Media With Non-Symmetric Boundary Conditions, Simon Louis, Timothy R. Marchant, Noel F. Smyth
Faculty of Engineering and Information Sciences - Papers: Part A
Optical spatial solitary waves are considered in a nonlocal thermal focusing medium with non-symmetric boundary conditions. The governing equations consist of a nonlinear Schrödinger equation for the light beam and a Poisson equation for the temperature of the medium. Three numerical methods are investigated for calculating the ground and excited solitary wave solutions of the coupled system. It is found that the Newton conjugate gradient method is the most computationally efficient and versatile numerical technique. The solutions show that by varying the ambient temperature, the solitary wave is deflected towards the warmer boundary. Solitary wave stability is also examined both …
Net Section Tension Capacity Of Cold-Reduced Sheet Steel Channel Braces Bolted At The Web, Lip H. Teh, Benoit P. Gilbert
Net Section Tension Capacity Of Cold-Reduced Sheet Steel Channel Braces Bolted At The Web, Lip H. Teh, Benoit P. Gilbert
Faculty of Engineering and Information Sciences - Papers: Part A
This paper examines the accuracy of equations specified by the North American and Australasian steel structures codes for determining the net section tension capacity of a channel brace. It points out that there are three distinct factors affecting the net section efficiency of a cold-formed steel channel brace bolted at the web. These factors are the in-plane shear lag associated with stress concentration around a bolt hole that is also present in flat sheets, the out-of-plane shear lag that is also present in an I-section bolted at the flanges only, and the bending moment arising from the connection eccentricity with …
Brachyview, A Novel Inbody Imaging System For Hdr Prostate Brachytherapy: Design And Monte Carlo Feasibility Study, M Safavi-Naeini, Z Han, D Cutajar, S Guatelli, M Petasecca, M L. F Lerch, D. Franklin, J Jakubek, S Pospisil, J Bucci, M Zaider, Anatoly B. Rosenfeld
Brachyview, A Novel Inbody Imaging System For Hdr Prostate Brachytherapy: Design And Monte Carlo Feasibility Study, M Safavi-Naeini, Z Han, D Cutajar, S Guatelli, M Petasecca, M L. F Lerch, D. Franklin, J Jakubek, S Pospisil, J Bucci, M Zaider, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
Purpose: High dose rate (HDR) brachytherapy is a form of radiation therapy for treating prostate cancer whereby a high activity radiation source is moved between predefined positions inside applicators inserted within the treatment volume. Accurate positioning of the source is essential in delivering the desired dose to the target area while avoiding radiation injury to the surrounding tissue. In this paper, HDR BrachyView, a novel inbody dosimetric imaging system for real time monitoring and verification of the radioactive seed position in HDR prostate brachytherapy treatment is introduced. The current prototype consists of a 15 × 60 mm2 silicon pixel detector …
Effects Of Caustic Cleaning On Pore Size Of Nanofiltration Membranes And Their Rejection Of Trace Organic Chemicals, Alexander Simon, James A. Mcdonald, Stuart J. Khan, William E. Price, Long D. Nghiem
Effects Of Caustic Cleaning On Pore Size Of Nanofiltration Membranes And Their Rejection Of Trace Organic Chemicals, Alexander Simon, James A. Mcdonald, Stuart J. Khan, William E. Price, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
The aim of this study was to assess the impact of caustic cleaning on the rejection of three different trace organic chemical (TrOC) groups (i.e. neutral hydrophilic, neutral hydrophobic and negatively charged) by two nanofiltration (NF) membranes ‒ namely NF270 and NF90. Chemical cleaning was simulated by exposing virgin membrane samples to commercial caustic cleaning formulations as well as sodium hydroxide solutions containing analytical grade additives such as sodium dodecyl sulfate or ethylenediaminetetraacetic acid. The membrane average pore size before and after exposure to a commercially available caustic cleaning formulation was determined based on the pore transport model. The results …
Laterally Loaded Rigid Piles With Rotational Constraints, Wei Dong Guo
Laterally Loaded Rigid Piles With Rotational Constraints, Wei Dong Guo
Faculty of Engineering and Information Sciences - Papers: Part A
Elastic-plastic, closed-form solutions were developed recently by the author, to capture the nonlinear response of laterally loaded rigid piles. Presented in compact form, the solutions are convenient to use, and sufficiently accurate despite using only two input parameters of the net limiting force per unit length pu along the pile, and a subgrade modulus k. Nevertheless, piles may be subjected to limited cap-restraints or loading below ground surface, which alter the response remarkably.This paper provides explicit expressions for estimating loading capacity of anchored piles and develops new solutions for lateral piles with cap-rotation by stipulating a constant pu or a …
Deformation Of Coal Fouled Ballast Stabilized With Geogrid Under Cyclic Load, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn
Deformation Of Coal Fouled Ballast Stabilized With Geogrid Under Cyclic Load, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents the results of laboratory investigations into the deformation of coal fouled ballast stabilized with geogrid at various degrees of fouling. A novel track process simulation apparatus was used to simulate realistic rail track conditions subjected to cyclic loading, and the void contamination index (VCI) was used to evaluate the level of ballast fouling. The experimental results show that coal fines act as a lubricant, causing grains of ballast to displace and rotate, and as a result, accelerate its deformation. However, coal fines also reduce ballast breakage because of a cushioning effect, that is, by reducing interparticle attrition. …
A Joint Theoretical And Experimental Study For Elastic Electron Scattering From 1,4-Dioxane, P Palihawadana, J P. Sullivan, S J. Buckman, Z Masin, J D. Gorfinkiel, F Blanco, G Garcia, M J. Brunger
A Joint Theoretical And Experimental Study For Elastic Electron Scattering From 1,4-Dioxane, P Palihawadana, J P. Sullivan, S J. Buckman, Z Masin, J D. Gorfinkiel, F Blanco, G Garcia, M J. Brunger
Faculty of Engineering and Information Sciences - Papers: Part A
We present results of measurements and calculations of elastic electron scattering from 1,4-dioxane in the energy range of 0–1000 eV. Absolute differential and integral elastic cross sections have been measured using a crossed electron-molecule beam spectrometer and the relative flow technique, at four energies in the 10–30 eV range and for scattered electrons in the angular range 20◦–129◦. The measured cross sections are compared with results from R-matrix computations, at the static exchange plus polarization level, calculated at energies between 0–20 eV, and with calculations employing the independent atom model with the screening corrected additivity rule (IAM-SCAR). Those latter computations …
Dynamic Fingerprint Based On Human Motion And Posture, Amir Hesami, Fazel Naghdy, David Stirling
Dynamic Fingerprint Based On Human Motion And Posture, Amir Hesami, Fazel Naghdy, David Stirling
Faculty of Engineering and Information Sciences - Papers: Part A
The feasibility of generating a Dynamic FingerPrint (DFP) for an individual is explored. DFP is a unique signature generated based on a combination of body part movements. The body movements are obtained using a sensor suit recording inertial signals that are subsequently modeled on a humanoid frame with 23 degrees of freedom (DOF). Measured signals include position, velocity, acceleration, orientation, angular velocity and angular acceleration. DTW (Dynamic Time Warping) is XVHG WR FODVVLI\ WKH LQGLYLGXDO¶V identity. The approach is described and the characteristics of the algorithms are presented. It is anticipated that these approaches will have applications in surveillance and …
Effect Of Austenitising And Deformation Temperatures On Dynamic Recrystallisation In Nb-Ti Microalloyed Steel, Andrii G. Kostryzhev, Abdullah Al Shahrani, Chen Zhu, Simon P. Ringer, Elena V. Pereloma
Effect Of Austenitising And Deformation Temperatures On Dynamic Recrystallisation In Nb-Ti Microalloyed Steel, Andrii G. Kostryzhev, Abdullah Al Shahrani, Chen Zhu, Simon P. Ringer, Elena V. Pereloma
Faculty of Engineering and Information Sciences - Papers: Part A
An investigation into influence of the austenitising temperature and the austenite deformation temperature on Nb precipitation and recrystallisation kinetics was carried out for a steel containing 0.081C-0.021Ti-0.064Nb (wt. %). The austenite grain structure was correlated to the dispersive properties of Nb atom clustering and precipitation. Irrespective of the austenitising temperature, deformation to 0.75 strain at 1075 °C produced a fully recrystallised microstructure. After deformation at 975 °C, only partial recrystallisation was observed in the samples austenitised at higher temperature, whereas samples austenitised at lower temperature were fully recrystallised. The influence of solute drag and particle pinning effects on the recrystallisation …
Defect Dynamics In Polycrystalline Zirconium Alloy Probed In Situ By Primary Extinction Of Neutron Diffraction, Saurabh Kabra, Kun Yan, David G. Carr, Robert P. Harrison, Rian J. Dippenaar, Mark Reid, Klaus-Dieter Liss
Defect Dynamics In Polycrystalline Zirconium Alloy Probed In Situ By Primary Extinction Of Neutron Diffraction, Saurabh Kabra, Kun Yan, David G. Carr, Robert P. Harrison, Rian J. Dippenaar, Mark Reid, Klaus-Dieter Liss
Faculty of Engineering and Information Sciences - Papers: Part A
After α + β-zirconium has fully transformed into β-phase upon heating, the intensities of all β-Zr Bragg reflections decrease simultaneously as a function of time. It is shown that this effect represents a transition from the kinematic to the dynamic theory of diffraction due to the ever increasing crystal perfection driven by thermal recovery of the system. The best fitting coherent crystallite size of 30 μm and other microstructural features are verified by in situ laser scanning confocal microscopy. This effect of primary extinction in neutron diffraction has been employed to further investigate the crystal perfection kinetics. Upon further heating, …
An Extension Of The Wilcoxon-Mann-Whitney Test For Analyzing Rt-Qpcr Data, Jan De Neve, Olivier Thas, Jean-Pierre Ottoy, Lieven Clement
An Extension Of The Wilcoxon-Mann-Whitney Test For Analyzing Rt-Qpcr Data, Jan De Neve, Olivier Thas, Jean-Pierre Ottoy, Lieven Clement
Faculty of Engineering and Information Sciences - Papers: Part A
Classical approaches for analyzing reverse transcription quantitative polymerase chain reaction (RT-qPCR) data commonly require normalization before assessing differential expression (DE). Normalization often has a substantial effect on the interpretation and validity of the subsequent analysis steps, but at the same time it causes a reduction in variance and introduces dependence among the normalized outcomes. These effects can be substantial, however, they are typically ignored. Most normalization techniques and methods for DE focus on mean expression and are sensitive to outliers. Moreover, in cancer studies, for example, oncogenes are often only expressed in a subsample of the populations during sampling. This …
Removal Of Trace Organic Contaminants By An Mbr Comprising A Mixed Culture Of Bacteria And White-Rot Fungi, Luong N. Nguyen, Faisal I. Hai, Shufan Yang, Jinguo Kang, Frederic D L Leusch, Felicity Roddick, William E. Price, Long D. Nghiem
Removal Of Trace Organic Contaminants By An Mbr Comprising A Mixed Culture Of Bacteria And White-Rot Fungi, Luong N. Nguyen, Faisal I. Hai, Shufan Yang, Jinguo Kang, Frederic D L Leusch, Felicity Roddick, William E. Price, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
The degradation of 30 trace organic contaminants (TrOC) by a white-rot fungus-augmented membrane bioreactor (MBR) was investigated. The results show that white-rot fungal enzyme (laccase), coupled with a redox mediator (1-hydroxy benzotriazole, HBT), could degrade TrOC that are resistant to bacterial degradation (e.g. diclofenac, triclosan, naproxen and atrazine) but achieved low removal of compounds (e.g. ibuprofen, gemfibrozil and amitriptyline) that are well removed by conventional activated sludge treatment. Overall, the fungus-augmented MBR showed better TrOC removal compared to a system containing conventional activated sludge. The major role of biodegradation in removal by the MBR was noted. Continuous mediator dosing to …
Effects Of Tungsten Addition On The Microstructure And Mechanical Properties Of Microalloyed Forging Steels, Jingwei Zhao, Taekyung Lee, Jeong Hun Lee, Zhengyi Jiang, Chong Soo Lee
Effects Of Tungsten Addition On The Microstructure And Mechanical Properties Of Microalloyed Forging Steels, Jingwei Zhao, Taekyung Lee, Jeong Hun Lee, Zhengyi Jiang, Chong Soo Lee
Faculty of Engineering and Information Sciences - Papers: Part A
In the current study, the effects of tungsten (W) addition on the microstructure, hardness, and room/low [223 K and 173 K (-50 C and -100 C)] temperature tensile properties of microalloyed forging steels were systematically investigated. Four kinds of steel specimens were produced by varying the W additions (0, 0.1, 0.5, and 1 wt pct). The microstructure showed that the addition of W does not have any noticeable effect on the amount of precipitates. The precipitates in W-containing steels were all rich in W, and the W concentration in the precipitates increased with the increasing W content. The mean sizes …
Towards Optimal Service Composition Upon Qos In Agent Cooperation, Chattrakul Sombattheera, Jun Shen
Towards Optimal Service Composition Upon Qos In Agent Cooperation, Chattrakul Sombattheera, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part A
It is quite common in tourism industry that a tourist would love to gain the most wonderful experience from visiting multiple places in one trip. This is a service composition problem and is difficult to manage because of several reasons. We address this problem by proposing an agent-based service composition framework to allocate to the tourist an optimal composite service. We take into account a number of factors including: 1) all the places of interest must be visited; 2) the preference on visiting places must be obeyed; 3) the total price is within the budget; 4) the time constraint must …
Controlled Fabrication Of Si Nanoparticles On Graphene Sheets For Li-Ion Batteries, Shenmin Zhu, Chengling Zhu, Jun Ma, Qing Meng, Zaiping Guo, Ziyong Yu, Tao Lu, Yao Li, Di Zhang, Woon Ming Lau
Controlled Fabrication Of Si Nanoparticles On Graphene Sheets For Li-Ion Batteries, Shenmin Zhu, Chengling Zhu, Jun Ma, Qing Meng, Zaiping Guo, Ziyong Yu, Tao Lu, Yao Li, Di Zhang, Woon Ming Lau
Faculty of Engineering and Information Sciences - Papers: Part A
A new route is presented for the synthesis of Si nanoparticle/Graphene (Si-Gr) composite by a sonochemical method and then magnesiothermic reduction process. During the process, silica particles were firstly synthesized and deposited on the surface of graphene oxide (SiO2-GO) by ultrasonic waves, subsequent low-temperature magnesiothermic reduction transformed SiO 2 to Si nanoparticles in situ on graphene sheets. The phase of the obtained materials was influenced by the weight ratio of Mg to SiO 2-GO. With the optimized ratio of 1 : 1, we can get Si nanoparticles on Gr sheets, with the average particle size of Si around 30 nm. …
A Personalized Hybrid Recommendation System Oriented To E-Commerce Mass Data In The Cloud, Fang Dong, Junzhou Luo, Xia Zhu, Yuxiang Wang, Jun Shen
A Personalized Hybrid Recommendation System Oriented To E-Commerce Mass Data In The Cloud, Fang Dong, Junzhou Luo, Xia Zhu, Yuxiang Wang, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part A
Personalized recommendation technology in Ecommerce is widespread to solve the problem of product information overload. However, with the further growth of the number of E-commerce users and products, the original recommendation algorithms and systems will face several new challenges: (1) to model user’s interests more accurately; (2) to provide more diverse recommendation modes; and (3) to support large-scale expansion. To address these challenges, from the actual demands of E-commerce applications (as Made-in-China website), a personalized hybrid recommendation system, which can support massive data set, is designed and implemented in this paper by using Cloud technology. Hereinto, the recommendation algorithms are …
On The Correlation Between The Effectiveness Of Metamorphic Relations And Dissimilarities Of Test Case Executions, Yuxiang Cao, Zhi Quan Zhou, Tsong Yueh Chen
On The Correlation Between The Effectiveness Of Metamorphic Relations And Dissimilarities Of Test Case Executions, Yuxiang Cao, Zhi Quan Zhou, Tsong Yueh Chen
Faculty of Engineering and Information Sciences - Papers: Part A
Metamorphic testing (MT) is a property-based automated software testing method. It alleviates the oracle problem by testing programs against metamorphic relations (MRs), which are necessary properties among multiple executions of the target program. For a given problem, usually more than one MR can be identified. It is therefore of practical importance for testers to know the nature of good MRs, that is, which MRs are likely to have higher chances of revealing failures. To address this issue we investigate the correlation between the faultdetection effectiveness of MRs and the dissimilarity (distance) of test case execution profiles. Empirical study results reveal …
Model Medication Management Process In Australian Nursing Homes Using Business Process Modeling, Siyu Qian, Ping Yu
Model Medication Management Process In Australian Nursing Homes Using Business Process Modeling, Siyu Qian, Ping Yu
Faculty of Engineering and Information Sciences - Papers: Part A
One of the reasons for end user avoidance or rejection to use health information systems is poor alignment of the system with healthcare workflow, likely causing by system designers' lack of thorough understanding about healthcare process. Therefore, understanding the healthcare workflow is the essential first step for the design of optimal technologies that will enable care staff to complete the intended tasks faster and better. The often use of multiple or "high risk" medicines by older people in nursing homes has the potential to increase medication error rate. To facilitate the design of information systems with most potential to improve …
Characterising Poly (Vinyl Chloride)/Aliquat 336 Polymer Inclusion Membranes: Evidence Of Phase Separation And Its Role In Metal Extraction, Nurul-Syazana Abdul-Halim, Philip G. Whitten, Long D. Nghiem
Characterising Poly (Vinyl Chloride)/Aliquat 336 Polymer Inclusion Membranes: Evidence Of Phase Separation And Its Role In Metal Extraction, Nurul-Syazana Abdul-Halim, Philip G. Whitten, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
The miscibility of the base polymer poly (vinyl chloride) (PVC) and the extractant Aliquat 336 in polymer inclusion membranes (PIMs) was investigated by characterisation of thermal transitions using differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The extractions of Cd (II) and Zn (II) using PVC/Aliquat 336 PIMs with different base polymer/extractant composition and different extraction temperature were also investigated. Changes in the PIM's heat capacity measured by DSC were small, thus, could only be used to determine the glass transition temperature (Tg) of PIMs with low Aliquat 336 content. On the other hand, DMA results clearly identify the …
The Feasibility Study And Characterziation Of A Two-Dimensional Diode Array In “Magic Phantom” For High Dose Rate Brachytherapy Quality Assurance, A Espinoza, B Beeksma, M Petasecca, I Fuduli, C Porumb, D L. Cutajar, S Corde, M A. Jackson, M Lf Lerch, Anatoly B. Rosenfeld
The Feasibility Study And Characterziation Of A Two-Dimensional Diode Array In “Magic Phantom” For High Dose Rate Brachytherapy Quality Assurance, A Espinoza, B Beeksma, M Petasecca, I Fuduli, C Porumb, D L. Cutajar, S Corde, M A. Jackson, M Lf Lerch, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
High dose rate (HDR) brachytherapy is a radiation treatment technique capable of delivering large dose rates to the tumor. Radiation is delivered using remote afterloaders to drive highly active sources (commonly 192Ir with an air KERMA strength range between 20 000 and 40 000 U, where 1 U = 1 uGy m2/h in air) through applicators directly into the patient's prescribed region of treatment. Due to the obvious ramifications of incorrect treatment while using such an active source, it is essential that there are methods for quality assurance (QA) that can directly and accurately verify the treatment plan and the …
Interfacial Assessment Of Cao-Al2o3-Sio2-Mgo Slags On Mgal2o4 Spinel, Hamed Abdeyazdan, Neslihan Dogan, M Akbar Rhamdhani, Michael Chapman, Brian J. Monaghan
Interfacial Assessment Of Cao-Al2o3-Sio2-Mgo Slags On Mgal2o4 Spinel, Hamed Abdeyazdan, Neslihan Dogan, M Akbar Rhamdhani, Michael Chapman, Brian J. Monaghan
Faculty of Engineering and Information Sciences - Papers: Part A
Steel cleanness is an important and growing research area driven by the demands to produce high quality steel. Lowering the inclusion content in steel is an important criterion for clean steel. It is therefore important to better understand the interaction between inclusions and slag to improve the removability of inclusions from liquid steel. For efficient inclusion removal the inclusions must attach/bond with the slag phase. The strength of the attachment can be characterised by the wettability of the slag on the inclusions. In this study, the dynamic wetting of ladle slags of the CaO-Al2O3-SiO2- MgO system on a solid spinel …
Facile Synthesis Of Hierarchical Networks Composed Of Highly Interconnected V2o5 Nanosheets Assembled On Carbon Nanotubes And Their Superior Lithium Storage Properties, Ruixiang Yu, Chaofeng Zhang, Qing Meng, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
Facile Synthesis Of Hierarchical Networks Composed Of Highly Interconnected V2o5 Nanosheets Assembled On Carbon Nanotubes And Their Superior Lithium Storage Properties, Ruixiang Yu, Chaofeng Zhang, Qing Meng, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part A
Hierarchical networks with highly interconnected V2O5 nanosheets (NSs) anchored on skeletons of carbon nanotubes (CNTs) are prepared by a facile hydrothermal treatment and a following calcination for the first time. Benefiting from these unique structural features, the as-prepared CNT@V2O5 material shows dramatically excellent electrochemical performance with remarkable long cyclability (137-116 mA h g-1 after 400 cycles) at various high rates (20 C to 30 C) and very good rate capability for highly reversible lithium storage. The excellent electrochemical performance suggests its promising use as a cathode material for future lithium-ion batteries.
Cross-Section Calculations For Positron Scattering From Pyrimidine Over An Energy Range From 0.1 To 10000 Ev, A G. Sanz, M C. Fuss, F Blanco, Z Masin, J D. Gorfinkiel, R P. Mceachran, M J. Brunger, G Garcia
Cross-Section Calculations For Positron Scattering From Pyrimidine Over An Energy Range From 0.1 To 10000 Ev, A G. Sanz, M C. Fuss, F Blanco, Z Masin, J D. Gorfinkiel, R P. Mceachran, M J. Brunger, G Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
We report a computational investigation of positron scattering by pyrimidine (C4H4N2) in the gas phase. Integral and differential cross sections have been calculated over a broad energy range by employing two distinct ab initio quantum scattering methods: the R-matrix method and a corrected form of the independent-atom representation, at low and high energies, respectively. Since pyrimidine is a strong polar molecule further dipole-induced excitations have been calculated in the framework of the first Born approximation. Good agreement is found between the different computational models and fair agreement is found with prior experimental results.
Current State Of The Art In Vacuum Preloading For Stabilising Soft Soil, Cholachat Rujikiatkamjorn, Buddhima Indraratna
Current State Of The Art In Vacuum Preloading For Stabilising Soft Soil, Cholachat Rujikiatkamjorn, Buddhima Indraratna
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper the analytical solutions for radial consolidation that include time dependent surcharge loading and vacuum pressure are proposed, whilst also considering the impact of the parabolic variation of permeability in the smear zone. The use of the spectral method for multilayered soil consolidation is introduced and verified. The Elliptical Cavity Expansion Theory is used to predict the extent of soil disturbance (smear zone) caused by the installation of mandrel driven vertical drains. The predicted smear zone is then compared to the data obtained from large-scale radial consolidation tests. Furthermore, the advantages and limitations of applying a vacuum through …
Effects Of Geosynthetic Reinforcement On Performance Of Ballasted Rail Track, Pongpipat Anantanasakul, Buddhima Indraratna, Sanjay S. Nimbalkar, Tim Neville
Effects Of Geosynthetic Reinforcement On Performance Of Ballasted Rail Track, Pongpipat Anantanasakul, Buddhima Indraratna, Sanjay S. Nimbalkar, Tim Neville
Faculty of Engineering and Information Sciences - Papers: Part A
The 'field' performance of different geosynthetics to reinforce ballasted rail tracks was investigated. An extensive monitoring program was undertaken on fully instrumented track sections constructed near Singleton, New South Wales. Four types of geosynthetics were installed at the ballast-subballast interface of track sections located on subgrades with three distinctly different values of stiffness. It was found that geogrids could decrease vertical settlements of the ballast layer with obvious benefits of improved track stability and decreased maintenance cost. It was also found that the effectiveness of reinforcing geogrids increased when the subgrade stiffness decreased. Keywords: Geosynthetic, Reinforcement, Rail track, Ballast.
Brachyview: Proof-Of-Principle Of A Novel In-Body Gamma Camera For Low Dose-Rate Prostate Brachytherapy, M Petasecca, K J. Loo, M Safavi-Naeini, Z Han, P E. Metcalfe, S Meikle, S Pospisil, J Jakubek, Joseph Bucci, Marco Zaider, M L. F Lerch, Y Qi, Anatoly B. Rosenfeld
Brachyview: Proof-Of-Principle Of A Novel In-Body Gamma Camera For Low Dose-Rate Prostate Brachytherapy, M Petasecca, K J. Loo, M Safavi-Naeini, Z Han, P E. Metcalfe, S Meikle, S Pospisil, J Jakubek, Joseph Bucci, Marco Zaider, M L. F Lerch, Y Qi, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
Purpose: The conformity of the achieved dose distribution to the treatment plan strongly correlates with the accuracy of seed implantation in a prostate brachytherapy treatment procedure. Incorrect seed placement leads to both short and long term complications, including urethral and rectal toxicity. The authors present BrachyView, a novel concept of a fast intraoperative treatment planning system, to provide real-time seed placement information based on in-body gamma camera data. BrachyView combines the high spatial resolution of a pixellated silicon detector (Medipix2) with the volumetric information acquired by a transrectal ultrasound (TRUS). The two systems will be embedded in the same probe …
A General Compression Approach To Multi-Channel Three-Dimensional Audio, Bin Cheng, Christian Ritz, Ian Burnett, Xiguang Zheng
A General Compression Approach To Multi-Channel Three-Dimensional Audio, Bin Cheng, Christian Ritz, Ian Burnett, Xiguang Zheng
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a technique for low bit rate compression of three-dimensional (3D) audio produced by multiple loudspeaker channels. The approach is based on the time-frequency analysis of the localization of spatial sound sources within the 3D space as rendered by a multi-channel audio signal (in this case 16 channels). This analysis results in the derivation of a stereo downmix signal representing the original 16 channels. Alternatively, a mono-downmix signal with side information representing the location of sound sources within the 3D spatial scene can also be derived. The resulting downmix signals are then compressed with a traditional audio coder, …
The Dynamic Wetting Characteristics Of Ladle Slags On Spinel, Hamed Abdeyazdan, Neslihan Dogan, Muhammad Rhamdhani, Michael W. Chapman, Brian Monaghan
The Dynamic Wetting Characteristics Of Ladle Slags On Spinel, Hamed Abdeyazdan, Neslihan Dogan, Muhammad Rhamdhani, Michael W. Chapman, Brian Monaghan
Faculty of Engineering and Information Sciences - Papers: Part A
Inclusion removal by slag is primarily achieved by optimizing process conditions that promote slag contact with the inclusion. For efficient inclusion removal the inclusions must adhere to the slag phase. The strength of the attachment can be characterised by the wettability of the slag on the inclusions.
Simplified Analytical Method For Seismic Response Of Composite Caisson-Piles Foundations, Rui Zhong, Maosong Huang
Simplified Analytical Method For Seismic Response Of Composite Caisson-Piles Foundations, Rui Zhong, Maosong Huang
Faculty of Engineering and Information Sciences - Papers: Part A
Seismic response of a new type of foundation，the composite caisson-piles foundation，is studied through a simplified analytical method. The focus is the contribution of the piles beneath the caisson in increasing the earthquake resistance of the foundation-superstructure system. Firstly，considering the interaction between the soil and foundation with dynamic Winkler model，the equation of kinematic response of the composite foundation under S-wave is derived. Secondly，a simplified model for the seismic response of the foundation-column-lumped mass system in frequency domain is built；and with Fourier transformation this method is applied to transient seismic problems. Thirdly，with an example of soil-foundation-superstructure seismic behavior，this proposed method is validated …
Fast Operations For Certain Two Alphabet Circulant Matrices, Gene Awyzio, Jennifer Seberry
Fast Operations For Certain Two Alphabet Circulant Matrices, Gene Awyzio, Jennifer Seberry
Faculty of Engineering and Information Sciences - Papers: Part A
In order to efficiently compute some combinatorial designs based upon circulant matrices which have different, defined numbers of 1's and 0's in each row and column we need to find candidate vectors with differing weights and Hamming distances. This paper concentrates on how to efficiently create such circulant matrices. These circulant matrices have applications in signal processing, public key codes and spectography