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Articles 241 - 270 of 2936
Full-Text Articles in Social and Behavioral Sciences
Dose Verification Of Eye Plaque Brachytherapy Using Spectroscopic Dosimetry, Talia Jarema, Dean L. Cutajar, Michael R. Weaver, Marco Petasecca, Michael L. F Lerch, Alannah Kejda, Anatoly B. Rosenfeld
Dose Verification Of Eye Plaque Brachytherapy Using Spectroscopic Dosimetry, Talia Jarema, Dean L. Cutajar, Michael R. Weaver, Marco Petasecca, Michael L. F Lerch, Alannah Kejda, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
Eye plaque brachytherapy has been developed and refined for the last 80 years, demonstrating effective results in the treatment of ocular malignancies. Current dosimetry techniques for eye plaque brachytherapy (such as TLD- and film-based techniques) are time consuming and cannot be used prior to treatment in a sterile environment. The measurement of the expected dose distribution within the eye, prior to insertion within the clinical setting, would be advantageous, as any errors in source loading will lead to an erroneous dose distribution and inferior treatment outcomes. This study investigated the use of spectroscopic dosimetry techniques for real-time quality assurance of …
Features Of A Self-Mixing Laser Diode Operating Near Relaxation Oscillation, Bin Liu, Yanguang Yu, Jiangtao Xi, Yuanlong Fan, Qinghua Guo, Jun Tong, R A. Lewis
Features Of A Self-Mixing Laser Diode Operating Near Relaxation Oscillation, Bin Liu, Yanguang Yu, Jiangtao Xi, Yuanlong Fan, Qinghua Guo, Jun Tong, R A. Lewis
Faculty of Engineering and Information Sciences - Papers: Part A
When a fraction of the light reflected by an external cavity re-enters the laser cavity, both the amplitude and the frequency of the lasing field can be modulated. This phenomenon is called the self-mixing effect (SME). A self-mixing laser diode (SM-LD) is a sensor using the SME. Usually, such LDs operate below the stability boundary where no relaxation oscillation happens. The boundary is determined by the operation condition including the injection current, optical feedback strength and external cavity length. This paper discovers the features of an SM-LD where the LD operates beyond the stability boundary, that is, near the relaxation …
Improved Performance Of Ballasted Rail Track Using Geosynthetics And Rubber Shockmat, Sanjay Nimbalkar, Buddhima Indraratna
Improved Performance Of Ballasted Rail Track Using Geosynthetics And Rubber Shockmat, Sanjay Nimbalkar, Buddhima Indraratna
Faculty of Engineering and Information Sciences - Papers: Part A
Large repetitive wheel loads from heavy haul and passenger trains can cause significant track deformation that leads to poor track geometry and safety issues. The inclusion of geosynthetics and rubber mats (i.e., shockmat) in critical sections in the track for reducing these adverse effects was further examined through an extensive field trial in the town of Singleton, New South Wales (NSW), Australia. Four types of geosynthetics and a shockmat were installed below the ballast layer in selected sections of track constructed on three different subgrades (soft alluvial clay, hard rock, and concrete bridge), and the performance of the instrumented track …
Joint Pet-Mr Respiratory Motion Models For Clinical Pet Motion Correction, Richard Manber, Kris Thielemans, Brian F. Hutton, Simon Wan, Jamie Mcclelland, Anna Barnes, Simon R. Arridge, Sebastien Ourselin, David Atkinson
Joint Pet-Mr Respiratory Motion Models For Clinical Pet Motion Correction, Richard Manber, Kris Thielemans, Brian F. Hutton, Simon Wan, Jamie Mcclelland, Anna Barnes, Simon R. Arridge, Sebastien Ourselin, David Atkinson
Faculty of Engineering and Information Sciences - Papers: Part A
Patient motion due to respiration can lead to artefacts and blurring in positron emission tomography (PET) images, in addition to quantification errors. The integration of PET with magnetic resonance (MR) imaging in PET-MR scanners provides complementary clinical information, and allows the use of high spatial resolution and high contrast MR images to monitor and correct motion-corrupted PET data. In this paper we build on previous work to form a methodology for respiratory motion correction of PET data, and show it can improve PET image quality whilst having minimal impact on clinical PET-MR protocols. We introduce a joint PET-MR motion model, …
Mri Geometric Distortion: Impact On Tangential Whole-Breast Imrt, Amy Walker, Peter E. Metcalfe, Gary P. Liney, Vikneswary Batumalai, Kylie L. Dundas, Carri Glide-Hurst, Geoff P. Delaney, Miriam M. Boxer, Mei Ling Yap, Jason Dowling, David Rivest-Henault, Elise M. Pogson, Lois C. Holloway
Mri Geometric Distortion: Impact On Tangential Whole-Breast Imrt, Amy Walker, Peter E. Metcalfe, Gary P. Liney, Vikneswary Batumalai, Kylie L. Dundas, Carri Glide-Hurst, Geoff P. Delaney, Miriam M. Boxer, Mei Ling Yap, Jason Dowling, David Rivest-Henault, Elise M. Pogson, Lois C. Holloway
Faculty of Engineering and Information Sciences - Papers: Part A
The purpose of this study was to determine the impact of magnetic resonance imaging (MRI) geometric distortions when using MRI for target delineation and planning for whole-breast, intensity-modulated radiotherapy (IMRT). Residual system distortions and combined systematic and patient-induced distortions are considered. This retrospective study investigated 18 patients who underwent whole-breast external beam radiotherapy, where both CT and MRIs were acquired for treatment planning. Distortion phantoms were imaged on two MRI systems, dedicated to radiotherapy planning (a wide, closed-bore 3T and an open-bore 1T). Patient scans were acquired on the 3T system. To simulate MRI-based planning, distortion maps representing residual system …
Experimental Study On Frp Tube Reinforced Concrete Columns Under Different Loading Conditions, Weiqiang Wang, M Neaz Sheikh, Muhammad N. S Hadi
Experimental Study On Frp Tube Reinforced Concrete Columns Under Different Loading Conditions, Weiqiang Wang, M Neaz Sheikh, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part A
The behavior of fiber-reinforced polymer (FRP) tube reinforced concrete (FTRC) columns under different loading conditions was investigated in this study. Four groups of 16 specimens were cast and tested. Specimens in the first group (the reference group) were re- inforced with longitudinal steel bars and steel helices (Group REF). Specimens in the second group were reinforced with intact glass FRP tubes (Group IT). Specimens in the third group were also reinforced with intact glass FRP tubes. In addition, polymer grid was embedded into the concrete cover to reduce the cover spalling (Group ITG). Specimens in the fourth group were reinforced …
Integration Of Plug-In Electric Vehicles Into Microgrids As Energy And Reactive Power Providers In Market Environment, Abdorreza Rabiee, Hassan Feshki Farahani, Mohammad Khalili, Jamshid Aghaei, Kashem M. Muttaqi
Integration Of Plug-In Electric Vehicles Into Microgrids As Energy And Reactive Power Providers In Market Environment, Abdorreza Rabiee, Hassan Feshki Farahani, Mohammad Khalili, Jamshid Aghaei, Kashem M. Muttaqi
Faculty of Engineering and Information Sciences - Papers: Part A
The concept of electricity markets in the deregulated environment generally refers to energy market and reactive power market is not paid attention as much as it deserves to. However, reactive power plays an important role in distribution networks to improve network conditions such as voltage profile improvement and loss reduction. Plug-in electric vehicles (PEVs) are mobile sources of active and reactive power, capable of being participated in energy market, and also in reactive power market without battery degradation. Active and reactive powers are coupled through the ac power flow equations and branch loading limits, as well as PEVs and synchronous …
Persuasive Technology In Mobile Applications Promoting Physical Activity: A Systematic Review, John Matthews, Khin Than Win, Harri Oinas-Kukkonen, Mark Freeman
Persuasive Technology In Mobile Applications Promoting Physical Activity: A Systematic Review, John Matthews, Khin Than Win, Harri Oinas-Kukkonen, Mark Freeman
Faculty of Engineering and Information Sciences - Papers: Part A
Persuasive technology in mobile applications can be used to influence the behaviour of users. A framework known as the Persuasive Systems Design model has been developed for designing and evaluating systems that influence the attitudes or behaviours of users. This paper reviews the current state of mobile applications for health behavioural change with an emphasis on applications that promote physical activity. The inbuilt persuasive features of mobile applications were evaluated using the Persuasive Systems Design model. A database search was conducted to identify relevant articles. Articles were then reviewed using the Persuasive Systems Design model as a framework for analysis. …
Learning A Pose Lexicon For Semantic Action Recognition, Lijuan Zhou, Wanqing Li, Philip O. Ogunbona
Learning A Pose Lexicon For Semantic Action Recognition, Lijuan Zhou, Wanqing Li, Philip O. Ogunbona
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a novel method for learning a pose lexicon comprising semantic poses defined by textual instructions and their associated visual poses defined by visual features. The proposed method simultaneously takes two input streams, semantic poses and visual pose candidates, and statistically learns a mapping between them to construct the lexicon. With the learned lexicon, action recognition can be cast as the problem of finding the maximum translation probability of a sequence of semantic poses given a stream of visual pose candidates. Experiments evaluating pre-trained and zero-shot action recognition conducted on MSRC-12 gesture and WorkoutSu-10 exercise datasets were used …
Exploring Structure And Role Of Engineering Asset Management System In Production Organizations, Khaled O. El-Akruti, Richard Dwight, Tieling Zhang
Exploring Structure And Role Of Engineering Asset Management System In Production Organizations, Khaled O. El-Akruti, Richard Dwight, Tieling Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
Little has been done in literature on the structure of Engineering Asset Management System (EAMS) and its relationship to production and organizational strategy. In this paper, the position of an EAMS within an organizational structure and its strategic role within a production organizations strategy has been explored. It is argued that the structure and mechanism of EAMS play a key role in directing the production process and linking to the organizational strategy: the absence or inadequacies of asset-related activities cause insufficient production performance that negatively impacts the strategic achievement. Production Actions are mapped with reference to the activities of the …
Simultaneous Grain Growth And Grain Refinement In Bulk Ultrafine-Grained Copper Under Tensile Deformation At Room Temperature, Hai Liang Yu, Cheng Lu, Anh Kiet Tieu, Hui Jun Li, Ajit R. Godbole, Charlie Kong, Xing Zhao
Simultaneous Grain Growth And Grain Refinement In Bulk Ultrafine-Grained Copper Under Tensile Deformation At Room Temperature, Hai Liang Yu, Cheng Lu, Anh Kiet Tieu, Hui Jun Li, Ajit R. Godbole, Charlie Kong, Xing Zhao
Faculty of Engineering and Information Sciences - Papers: Part A
Grain growth and grain refinement behavior during deformation determine the strength and ductility of ultrafine-grained materials. We used asymmetric cryorolling to fabricate ultrafine-grained copper sheets with an average grain width of 230 nm and having a laminate structure. The sheets show a high-true failure strain of 1.5. Observation of the microstructure at the fracture surface reveals that ultrafine laminate-structured grains were simultaneously transformed into both equiaxed nanograins and coarse grains under tensile deformation at room temperature.
Experimental And Numerical Study On The Effect Of Zddp Films On Sticking During Hot Rolling Of Ferritic Stainless Steel Strip, Liang Hao, Zhengyi Jiang, Dongbin Wei, Dianyao Gong, Xiawei Cheng, Jingwei Zhao, Suzhen Luo, Laizhu Jiang
Experimental And Numerical Study On The Effect Of Zddp Films On Sticking During Hot Rolling Of Ferritic Stainless Steel Strip, Liang Hao, Zhengyi Jiang, Dongbin Wei, Dianyao Gong, Xiawei Cheng, Jingwei Zhao, Suzhen Luo, Laizhu Jiang
Faculty of Engineering and Information Sciences - Papers: Part A
The aim of this study is to investigate the effect of zinc dialkyl dithio phosphate (ZDDP) films on sticking during hot rolling of a ferritic stainless steel strip. The surface characterization and crack propagation of the oxide scale are very important for understanding the mechanism of the sticking. The high-temperature oxidation of one typical ferritic stainless was conducted at 1373 K (1100 °C) for understanding its microstructure and surface morphology. Hot-rolling tests of a ferritic stainless steel strip show that no obvious cracks among the oxide scale were observed with the application of ZDDP. A finite element method model was …
Effects Of Hydraulic Pressure On Wrinkling And Earing In Micro Hydro Deep Drawing Of Sus304 Circular Cups, Liang Luo, Dongbin Wei, Xiaogang Wang, Cunlong Zhou, Qingxue Huang, Jianzhong Xu, Di Wu, Zhengyi Jiang
Effects Of Hydraulic Pressure On Wrinkling And Earing In Micro Hydro Deep Drawing Of Sus304 Circular Cups, Liang Luo, Dongbin Wei, Xiaogang Wang, Cunlong Zhou, Qingxue Huang, Jianzhong Xu, Di Wu, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part A
Influences of hydraulic pressure on forming features in micro hydro deep drawing are different from those in normal drawing due to the small size of specimens. In this study, micro hydro deep drawing of SUS304 sheets was carried out in order to study the impacts of the hydraulic pressure on the quality of the drawn cup. Experimental results indicate that there is a critical hydraulic pressure range from 3 to 6 % of the blank's initial yield stress, where wrinkling and earing development trends change twice. The wrinkling and the earing of the drawn cup also reach their local extremes …
Correlation Between Zn-Rich Phase And Corrosion/Oxidation Behavior Of Sn-8zn-3bi Alloy, Xin Zhang, Chong Li, Zhiming Gao, Yongchang Liu, Zongqing Ma, Liming Yu, Hui Jun Li
Correlation Between Zn-Rich Phase And Corrosion/Oxidation Behavior Of Sn-8zn-3bi Alloy, Xin Zhang, Chong Li, Zhiming Gao, Yongchang Liu, Zongqing Ma, Liming Yu, Hui Jun Li
Faculty of Engineering and Information Sciences - Papers: Part A
The microstructure of Sn-8Zn-3Bi alloy was refined by increasing the solidification rate and the correlation between Zn-rich phase and the corrosion/oxidation behavior of the alloy was investigated. The Zn-rich phase transforms from coarse flakes to fine needles dispersed in the β-Sn matrix with the increase of the cooling rate. The transformation of Zn-rich precipitates enhances the anticorrosive ability of Sn-8Zn-3Bi alloy in 3.5 wt.% NaCl solution. On the contrary, Sn-8Zn-3Bi alloy with a fine needle-like Zn-rich phase shows poor oxidation resistance under air atmosphere, due to the fast diffusion of Zn atoms in Sn matrix.
The Social Phenomenon Of Body-Modifying In A World Of Technological Change: Past, Present, Future, Sharon Bradley-Munn, Katina Michael, M G. Michael
The Social Phenomenon Of Body-Modifying In A World Of Technological Change: Past, Present, Future, Sharon Bradley-Munn, Katina Michael, M G. Michael
Faculty of Engineering and Information Sciences - Papers: Part A
The current level of uncritical adoption in bodymodifying devices, and the propensity for remaking the human body through the aid of technology, is moving society closer to a human-machine fusion. We are at the brink of postmodernity in all its fullness. This paper speculates on the pros and cons of such a reality and insists on the right of the individual to be able to self-govern his/her own body, maintaining the right to choose. How individual choice is limited is also discussed, as industry innovation cycles get faster, and the need for continuous disruption means that the consumer is often …
Action Recognition Based On Joint Trajectory Maps Using Convolutional Neural Networks, Pichao Wang, Zhaoyang Li, Yonghong Hou, Wanqing Li
Action Recognition Based On Joint Trajectory Maps Using Convolutional Neural Networks, Pichao Wang, Zhaoyang Li, Yonghong Hou, Wanqing Li
Faculty of Engineering and Information Sciences - Papers: Part A
Recently, Convolutional Neural Networks (ConvNets) have shown promising performances in many computer vision tasks, especially image-based recognition. How to effectively use ConvNets for video-based recognition is still an open problem. In this paper, we propose a compact, effective yet simple method to encode spatiotemporal information carried in 3D skeleton sequences into multiple 2D images, referred to as Joint Trajectory Maps (JTM), and ConvNets are adopted to exploit the discriminative features for realtime human action recognition. The proposed method has been evaluated on three public benchmarks, i.e., MSRC-12 Kinect gesture dataset (MSRC-12), G3D dataset and UTD multimodal human action dataset (UTD-MHAD) …
Revisiting An Information Infrastructure For Development: Exploring The Cost Of Information In Pacific Island Development, William J. Tibben
Revisiting An Information Infrastructure For Development: Exploring The Cost Of Information In Pacific Island Development, William J. Tibben
Faculty of Engineering and Information Sciences - Papers: Part A
Information and communication technologies (ICTs) have been associated with development programmes for many decades. A theme of Lamberton's commentary on such initiatives focuses on the lack of attention given to information as a key factor in the development process. His writing reiterated a number of arguments that he saw as being fundamental to the application of an information perspective to development issues. With a focus on agricultural development policy in the Pacific region, the paper uses a number of propositions that are suggested by Lamberton to analyse contemporary development initiatives in Pacific Island agriculture. These propositions focus attention on information …
Waste Activated Sludge Hydrolysis And Acidification: A Comparison Between Sodium Hydroxide And Steel Slag Addition, Ying Zhang, Chaojie Zhang, Xuan Zhang, Leiyu Feng, Yongmei Li, Qi Zhou
Waste Activated Sludge Hydrolysis And Acidification: A Comparison Between Sodium Hydroxide And Steel Slag Addition, Ying Zhang, Chaojie Zhang, Xuan Zhang, Leiyu Feng, Yongmei Li, Qi Zhou
Faculty of Engineering and Information Sciences - Papers: Part A
Alkaline treatment with steel slag and NaOH addition were investigated under different pH conditions for the fermentation of waste activated sludge. Better performance was achieved in steel slag addition scenarios for both sludge hydrolysis and acidification. More solubilization of organic matters and much production of higher VFA (volatile fatty acid) in a shorter time can be achieved at pH. 10 when adjusted by steel slag. Higher enzyme activities were also observed in steel slag addition scenarios under the same pH conditions. Phosphorus concentration in the supernatant increased with fermentation time and pH in NaOH addition scenarios, while in contrast most …
Finite Time Singularities For The Locally Constrained Willmore Flow Of Surfaces, James A. Mccoy, Glen Wheeler
Finite Time Singularities For The Locally Constrained Willmore Flow Of Surfaces, James A. Mccoy, Glen Wheeler
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we study the steepest descent L2-gradient flow of the functional Wλ1,λ2, which is the the sum of the Willmore energy, λ1-weighted surface area, and λ2-weighted enclosed volume, for surfaces immersed in R3. This coincides with the Helfrich functional with zero `spontaneous curvature'. Our first results are a concentration-compactness alternative and interior estimates for the flow. For initial data with small energy, we prove preservation of embeddedness, and by directly estimating the Euler-Lagrange operator from below in L2 we obtain that the maximal time of existence is finite. Combining this result …
Thermally Activated Paraffin-Filled Mckibben Muscles, Danial Sangian, Sina Naficy, Geoffrey M. Spinks
Thermally Activated Paraffin-Filled Mckibben Muscles, Danial Sangian, Sina Naficy, Geoffrey M. Spinks
Faculty of Engineering and Information Sciences - Papers: Part A
McKibben artificial muscles are one of the most pragmatic contractile actuators, offering performances similar to skeletal muscles. The McKibben muscles operate by pumping pressurized fluid into a bladder constrained by a stiff braid so that tensile force generated is amplified in comparison to a conventional hydraulic ram. The need for heavy and bulky compressors/ pumps makes pneumatic or hydraulic McKibben muscles unsuitable for microactuators, where a highly compact design is required. In an alternative approach, this article describes a new type of McKibben muscle using an expandable guest fill material, such as temperature-sensitive paraffin, to achieve a more compact and …
A Comparison Of Spatial Predictors When Datasets Could Be Very Large, J R. Bradley, Noel A. Cressie, Tao Shi
A Comparison Of Spatial Predictors When Datasets Could Be Very Large, J R. Bradley, Noel A. Cressie, Tao Shi
Faculty of Engineering and Information Sciences - Papers: Part A
In this article, we review and compare a number of methods of spatial prediction, where each method is viewed as an algorithm that processes spatial data. To demonstrate the breadth of available choices, we consider both traditional and more-recently-introduced spatial predictors. Specifically, in our exposition we review: traditional stationary kriging, smoothing splines, negative-exponential distance-weighting, fixed rank kriging, modified predictive processes, a stochastic partial differential equation approach, and lattice kriging. This comparison is meant to provide a service to practitioners wishing to decide between spatial predictors. Hence, we provide technical material for the unfamiliar, which includes the definition and motivation for …
An Evaluation Of The Dynamics Of Diluted Neural Network, Lijuan Wang, Jun Shen, Qingguo Zhou, Zhihao Shang, Huaming Chen, Hong Zhao
An Evaluation Of The Dynamics Of Diluted Neural Network, Lijuan Wang, Jun Shen, Qingguo Zhou, Zhihao Shang, Huaming Chen, Hong Zhao
Faculty of Engineering and Information Sciences - Papers: Part A
The Monte Carlo adaptation rule has been proposed to design asymmetric neural network. By adjusting the degree of the symmetry of the networks designed by this rule, the spurious memories or unwanted attractors of the networks can be suppressed completely. We have extended this rule to design full-connected neural networks and diluted neural networks. Comparing the dynamics of these two neural networks, the simulation results indicated that the performance of diluted neural network was poorer than the performance of full-connected neural network. As to this point, further research is needed. In this paper, we use the annealed dilution method to …
Shape Optimisation Of Manufacturable And Usable Cold-Formed Steel Singly-Symmetric And Open Columns, Bin Wang, Benoit P. Gilbert, Hong Guan, Lip H. Teh
Shape Optimisation Of Manufacturable And Usable Cold-Formed Steel Singly-Symmetric And Open Columns, Bin Wang, Benoit P. Gilbert, Hong Guan, Lip H. Teh
Faculty of Engineering and Information Sciences - Papers: Part A
This paper aims at incorporating manufacturing and assembly features into a shape optimisation algorithm for cold-formed steel (CFS) profiles. Genetic algorithm (GA) is used as the search algorithm and is combined with the augmented Lagrangian constraint-handling method to avoid ill-conditioning. Manufacturable cross-sections are arbitrarily drawn in the initial generation and subsequently treated as an integral part of the GA. The assembly features considered in the study reflect the ones commonly encountered in the construction industry. They include fastening elements (horizontal flange and vertical web) and allowances for utilities, and are treated as constraints. The algorithm is applied to simply-supported singly-symmetric, …
Nonunital Spectral Triples And Metric Completeness In Unbounded Kk-Theory, Bram Mesland, Adam C. Rennie
Nonunital Spectral Triples And Metric Completeness In Unbounded Kk-Theory, Bram Mesland, Adam C. Rennie
Faculty of Engineering and Information Sciences - Papers: Part A
We consider the general properties of bounded approximate units in non-self-adjoint operator algebras. Such algebras arise naturally from the differential structure of spectral triples and unbounded Kasparov modules. Our results allow us to present a unified approach to characterising completeness of spectral metric spaces, existence of connections on modules, self-adjointness and regularity of induced operators on tensor product C⁎-modules and the lifting of Kasparov products to the unbounded category. In particular, we prove novel existence results for quasicentral approximate units in non-self-adjoint operator algebras, allowing us to strengthen Kasparov's technical theorem and extend it to this realm. Finally, we show …
Rolling Force Prediction In Heavy Plate Rolling Based On Uniform Differential Neural Network, Fei Zhang, Yuntao Zhao, Jian Shao
Rolling Force Prediction In Heavy Plate Rolling Based On Uniform Differential Neural Network, Fei Zhang, Yuntao Zhao, Jian Shao
Faculty of Engineering and Information Sciences - Papers: Part A
Accurate prediction of the rolling force is critical to assuring the quality of the final product in steel manufacturing. Exit thickness of plate for each pass is calculated from roll gap, mill spring, and predicted roll force. Ideal pass scheduling is dependent on a precise prediction of the roll force in each pass. This paper will introduce a concept that allows obtaining the material model parameters directly from the rolling process on an industrial scale by the uniform differential neural network. On the basis of the characteristics that the uniform distribution can fully characterize the solution space and enhance the …
Etched Polymer Fibre Bragg Gratings, Kishore Bhowmik, Gang-Ding Peng, Yanhua Luo, Eliathamby Ambikairajah, Ginu Rajan
Etched Polymer Fibre Bragg Gratings, Kishore Bhowmik, Gang-Ding Peng, Yanhua Luo, Eliathamby Ambikairajah, Ginu Rajan
Faculty of Engineering and Information Sciences - Papers: Part A
Recently we initiated a new research direction for high-sensitivity and high-reflectivity Bragg grating fabrication based on etched polymer optical fibre, here we report the recent research developments on etched polymer fibre Bragg gratings.
Rational And Self-Adaptive Evolutionary Extreme Learning Machine For Electricity Price Forecast, Chixin Xiao, Zhao Y. Dong, Yan Xu, Ke Meng, Xun Zhou, Xin Zhang
Rational And Self-Adaptive Evolutionary Extreme Learning Machine For Electricity Price Forecast, Chixin Xiao, Zhao Y. Dong, Yan Xu, Ke Meng, Xun Zhou, Xin Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
Electricity price forecast is of great importance to electricity market participants. Given the sophisticated time-series of electricity price, various approaches of extreme learning machine (ELM) have been identified as effective prediction approaches. However, in high dimensional space, evolutionary extreme learning machine (E-ELM) is time-consuming and difficult to converge to optimal region when just relying on stochastic searching approaches. In the meanwhile, due to the complicated functional relationship, objective function of E-ELM seems difficult also to be mined directly for some useful mathematical information to guide the optimum exploring. This paper proposes a new differential evolution (DE) like algorithm to enhance …
Pedestrian Lane Detection In Unstructured Scenes For Assistive Navigation, Son Lam Phung, Cuong Le Manh, Abdesselam Bouzerdoum
Pedestrian Lane Detection In Unstructured Scenes For Assistive Navigation, Son Lam Phung, Cuong Le Manh, Abdesselam Bouzerdoum
Faculty of Engineering and Information Sciences - Papers: Part A
Automatic detection of the pedestrian lane in a scene is an important task in assistive and autonomous navigation. This paper presents a vision-based algorithm for pedestrian lane detection in unstructured scenes, where lanes vary significantly in color, texture, and shape and are not indicated by any painted markers. In the proposed method, a lane appearance model is constructed adaptively from a sample image region, which is identified automatically from the image vanishing point. This paper also introduces a fast and robust vanishing point estimation method based on the color tensor and dominant orientations of color edge pixels. The proposed pedestrian …
Water Reclamation And Nitrogen Extraction From Municipal Solid Waste Landfill Leachate, Long D. Nghiem, Faisal I. Hai, Andre Listowski
Water Reclamation And Nitrogen Extraction From Municipal Solid Waste Landfill Leachate, Long D. Nghiem, Faisal I. Hai, Andre Listowski
Faculty of Engineering and Information Sciences - Papers: Part A
This study aims to explore several innovative technologies including electrocoagulation, nanofiltration (NF), membrane distillation (MD), and ion exchange resin for clean water extraction and resource recovery from landfill leachate. Our results demonstrate the technical feasibility of water reuse and ammonia recovery from landfill leachate. Electrocoagulation was effective as a pretreatment step for the NF process and could remove most suspended solids and some organic matter. The results show that the combination of NF and MD can produce high-quality water from landfill leachate suitable for reuse applications with respect to heavy metals (with the exception of arsenic) and pharmaceutically active compounds …
Structural Behaviours Of Railway Prestressed Concrete Sleepers (Crossties) With Hole And Web Openings, Sakdirat Kaewunruen, Erosha Kahawatta Gamage, Alex M. Remennikov
Structural Behaviours Of Railway Prestressed Concrete Sleepers (Crossties) With Hole And Web Openings, Sakdirat Kaewunruen, Erosha Kahawatta Gamage, Alex M. Remennikov
Faculty of Engineering and Information Sciences - Papers: Part A
As the crosstie beam in railway track systems, the prestressed concrete sleepers (or railroad ties) are principally designed in order to carry wheel loads from the rails to the ground. Their design takes into account static and dynamic loading conditions. It is evident that prestressed concrete has played a significant role as to maintain the high endurance of the sleepers under low to moderate repeated impact loads. In spite of the most common use of the prestressed concrete sleepers in railway tracks, there have always been considerable demands from rail and track engineers to improve serviceability and functionality of concrete …