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Articles 1 - 30 of 46
Full-Text Articles in Social and Behavioral Sciences
Development Of A Novel Phase Change Material Emulsion For Cooling Systems, Jingjing Shao, Jo Darkwa, Georgios Kokogiannakis
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.
Development Of A Novel Multi-Layer Mre Isolator For Suppression Of Building Vibrations Under Seismic Events, Jian Yang, Shuaishuai Sun, Tongfei Tian, Weihua Li, Haiping Du, Gursel Alici, Masami Nakano
Development Of A Novel Multi-Layer Mre Isolator For Suppression Of Building Vibrations Under Seismic Events, Jian Yang, Shuaishuai Sun, Tongfei Tian, Weihua Li, Haiping Du, Gursel Alici, Masami Nakano
Faculty of Engineering and Information Sciences - Papers: Part A
Protecting civil engineering structures from uncontrollable events such as earthquakes while maintaining their structural integrity and serviceability is very important; this paper describes the performance of a stiffness softening magnetorheological elastomer (MRE) isolator in a scaled three storey building. In order to construct a closed-loop system, a scaled three storey building was designed and built according to the scaling laws, and then four MRE isolator prototypes were fabricated and utilised to isolate the building from the motion induced by a scaled El Centro earthquake. Fuzzy logic was used to output the current signals to the isolators, based on the real-time …
A Novel Queue Management Policy For Delay-Tolerant Networks, Saeid Iranmanesh
A Novel Queue Management Policy For Delay-Tolerant Networks, Saeid Iranmanesh
Faculty of Engineering and Information Sciences - Papers: Part A
Delay-tolerant networks (DTNs) have attracted increasing attention from governments, academia and industries in recent years. They are designed to provide a communication channel that exploits the inherent mobility of trams, buses and cars. However, the resulting highly dynamic network suffers from frequent disconnections, thereby making node-to-node communications extremely challenging. Researchers have thus proposed many routing/forwarding strategies in order to achieve high delivery ratios and/or low latencies and/or low overheads. Their main idea is to have nodes store and carry information bundles until a forwarding opportunity arises. This, however, creates the following problems. Nodes may have short contacts and/or insufficient buffer …
Interface Analysis And Hot Deformation Behaviour Of A Novel Laminated Composite With High-Cr Cast Iron And Low Carbon Steel Prepared By Hot Compression Bonding, Zhengyi Jiang, Xingjian Gao, Sheng-Li Li, Hong Mei Zhang, Dengfu Chen, Jian Zhong Xu
Interface Analysis And Hot Deformation Behaviour Of A Novel Laminated Composite With High-Cr Cast Iron And Low Carbon Steel Prepared By Hot Compression Bonding, Zhengyi Jiang, Xingjian Gao, Sheng-Li Li, Hong Mei Zhang, Dengfu Chen, Jian Zhong Xu
Faculty of Engineering and Information Sciences - Papers: Part A
A hot compression bonding process was developed to prepare a novel laminated composite consisting of high-Cr cast iron (HCCI) as the inner layer and low carbon steel (LCS) as the outer layers on a Gleeble 3500 thermomechanical simulator at a temperature of 950 °C and a strain rate of 0.001 S-1. Interfacial bond quality and hot deformation behaviour of the laminate were studied by microstructural characterisation and mechanical tests. Experimental results show that the metallurgical bond between the constituent metals was achieved under the proposed bonding conditions without discernible defects and the formation of interlayer or intermetallic layer …
A Novel Mobility-Based Routing Protocol For Semi-Predictable Disruption Tolerant Networks, Saeid Iranmanesh, Kwan-Wu Chin
A Novel Mobility-Based Routing Protocol For Semi-Predictable Disruption Tolerant Networks, Saeid Iranmanesh, Kwan-Wu Chin
Faculty of Engineering and Information Sciences - Papers: Part A
This letter considers routing in delay tolerant networks whereby nodes have semi-predictable mobility patterns within a time period. We propose a mobility-based routing protocol (MBRP) where nodes construct a space-time graph dynamically. As the space-time graph may be incomplete, MBRP presents a heuristic that evaluates encountered nodes based on their recorded mobility patterns in order to disseminate a finite number of bundle replicas. Simulation results, over a service quality metric comprising of delivery, delay and overhead, show that MBRP achieves up to 105 % improvement as compared to four well-known routing protocols. Finally, MBRP is capable of achieving 50 % …
Novel Experimental Setup For Time-Of-Flight Mass Spectrometry Ion Detection In Collisions Of Anionic Species With Neutral Gas-Phase Molecular Targets, J C. Oller, L Ellis-Gibbings, F Ferreira Da Silva, Paulo Limao-Vieira, Gustavo Garcia
Novel Experimental Setup For Time-Of-Flight Mass Spectrometry Ion Detection In Collisions Of Anionic Species With Neutral Gas-Phase Molecular Targets, J C. Oller, L Ellis-Gibbings, F Ferreira Da Silva, Paulo Limao-Vieira, Gustavo Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
We report a novel experimental setup for studying collision induced products resulting from the interaction of anionic beams with a neutral gas-phase molecular target. The precursor projectile was admitted into vacuum through a commercial pulsed valve, with the anionic beam produced in a hollow cathode discharge-induced plasma, and guided to the interaction region by a set of deflecting plates where it was made to interact with the target beam. Depending on the collision energy regime, negative and positive species can be formed in the collision region and ions were time-of-flight (TOF) mass-analysed. Here, we present data on O-2 precursor projectile, …
Evaluating Distributed Generations In Utility Operation And Planning Issues Using A Novel Fusion Pso-Sfla Algorithm, Esmaeil Mahboubi-Moghaddam, Jamshid Aghaei, Kashem M. Muttaqi, Behrouz Zoghdar-Moghadam-Shahrekohne, Mohammad Rasoul Narimani
Evaluating Distributed Generations In Utility Operation And Planning Issues Using A Novel Fusion Pso-Sfla Algorithm, Esmaeil Mahboubi-Moghaddam, Jamshid Aghaei, Kashem M. Muttaqi, Behrouz Zoghdar-Moghadam-Shahrekohne, Mohammad Rasoul Narimani
Faculty of Engineering and Information Sciences - Papers: Part A
Increasing demand of electrical energy has leaded to utilization of more and more Distributed generation (DG) sources in distribution systems. Since the locations and capacities of the DG sources connected to the distribution system profoundly impact on reducing system loss and improving system reliability, so placement and sizing indication of DGs is the most substantial process in distribution systems. By adding the reliability objective to this problem, it becomes more complicated than before and it needs to be solved with an accurate algorithm. To this reason, to solve the proposed problem a new approach based on the mixture of two …
Development Of A Novel Variable Stiffness And Damping Magnetorheological Fluid Damper, Shuaishuai Sun, Jian Yang, Weihua Li, Huaxia Deng, Haiping Du, Gursel Alici
Development Of A Novel Variable Stiffness And Damping Magnetorheological Fluid Damper, Shuaishuai Sun, Jian Yang, Weihua Li, Huaxia Deng, Haiping Du, Gursel Alici
Faculty of Engineering and Information Sciences - Papers: Part A
This paper reports a novel magnetorheological fluid (MRF)-based damper, which synergizes the attributes of variable stiffness and damping through the compact assembly of two MRF damping units and a spring. The magnetic field densities of the two damping units were analyzed. After the prototype of the new MRF damper, a hydraulically actuated MTS machine was used to test the damper's performance, including stiffness variability and damping variability, amplitudedependent responses and frequency-dependent responses. A new mathematical model was developed to describe the variable stiffness and damping MRF damper. The successful development, experimental testing and modeling of this innovative variable stiffness and …
Novel Reversible And Switchable Electrolytes Based On Magneto-Rheology, Jie Ding, Gangrou Peng, Kewei Shu, Caiyun Wang, Tongfei Tian, Wenrong Yang, Yuanchao Zhang, Gordon G. Wallace, Weihua Li
Novel Reversible And Switchable Electrolytes Based On Magneto-Rheology, Jie Ding, Gangrou Peng, Kewei Shu, Caiyun Wang, Tongfei Tian, Wenrong Yang, Yuanchao Zhang, Gordon G. Wallace, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
Replacing organic liquid electrolytes with solid electrolytes has led to a new perspective on batteries, enabling high-energy battery chemistry with intrinsically safe cell designs. However, most solid/gel electrolytes are easily deformed; under extreme deformation, leakage and/or short-circuiting can occur. Here, we report a novel magneto-rheological electrolyte (MR electrolyte) that responds to changes in an external magnetic field; the electrolyte exhibits low viscosity in the absence of a magnetic field and increased viscosity or a solid-like phase in the presence of a magnetic field. This change from a liquid to solid does not significantly change the conductivity of the MR electrolyte. …
A Novel Approach To Mineral Effects On Coke Reactivity, Brian Monaghan, Apsara Jayasekara, Raymond Longbottom
A Novel Approach To Mineral Effects On Coke Reactivity, Brian Monaghan, Apsara Jayasekara, Raymond Longbottom
Faculty of Engineering and Information Sciences - Papers: Part A
A coke analogue has been developed to evaluate mineral effects on coke reactivity. Elucidation of the effects of minerals on coke reactivity has proved difficult due to the complex and heterogeneous nature of industrial coke and the potential non-additive effects of minerals on coke reactivity. The coke analogue addresses this complexity and heterogeneity through control of its mineralogy, porosity and carbon structures. Recent studies have shown the analogue is capable of discriminating individual mineral effects on coke reactivity. In this paper the reaction mechanism of the analogues reactivity in CO2 is assessed and compared with that of industrial coke.
Removal Of Trace Organic Chemicals And Performance Of A Novel Hybrid Ultrafiltration-Osmotic Membrane Bioreactor, Ryan W. Holloway, Julia Regnery, Long D. Nghiem, Tzahi Cath
Removal Of Trace Organic Chemicals And Performance Of A Novel Hybrid Ultrafiltration-Osmotic Membrane Bioreactor, Ryan W. Holloway, Julia Regnery, Long D. Nghiem, Tzahi Cath
Faculty of Engineering and Information Sciences - Papers: Part A
A hybrid ultrafiltration-osmotic membrane bioreactor (UFO-MBR) was investigated for over 35 days for nutrient and trace organic chemical (TOrC) removal from municipal wastewater. The UFO-MBR system uses both ultrafiltration (UF) and forward osmosis (FO) membranes in parallel to simultaneously extract clean water from an activated sludge reactor for nonpotable (or environmental discharge) and potable reuse, respectively. In the FO stream, water is drawn by osmosis from activated sludge through an FO membrane into a draw solution (DS), which becomes diluted during the process. A reverse osmosis (RO) system is then used to reconcentrate the diluted DS and produce clean water …
Constitutive Analysis For Hot Deformation Behaviour Of Novel Bimetal Consisting Of Pearlitic Steel And Low Carbon Steel, Xingjian Gao, Zhengyi Jiang, Dongbin Wei, Huijun Li, Sihai Jiao, Jianzhong Xu, Xiaoming Zhang, Jingtao Han, Dengfu Chen
Constitutive Analysis For Hot Deformation Behaviour Of Novel Bimetal Consisting Of Pearlitic Steel And Low Carbon Steel, Xingjian Gao, Zhengyi Jiang, Dongbin Wei, Huijun Li, Sihai Jiao, Jianzhong Xu, Xiaoming Zhang, Jingtao Han, Dengfu Chen
Faculty of Engineering and Information Sciences - Papers: Part A
To understand the high temperature flow behaviour of a novel pearlitic steel (PS) and low carbon steel (LCS) bimetal, hot compression tests in a wide range of temperature and strain rate were conducted on a Gleeble 3500 thermo mechanical simulator, and the constitutive model was developed based on the experimental data. The measured true stress-strain curves exhibited three types of variation patterns, which are (i) a plateau type, (ii) single peak type and (iii) multi peaks type. These patterns well displayed the effects of the deformation temperature, strain rate and plastic strain on the flow behaviour of the bimetal. By …
Concept And Simulation Study Of A Novel Localization Method For Robotic Endoscopic Capsules Using Multiple Positron Emission Markers, Trung Duc Than, Gursel Alici, Steven Harvey, Hao Zhou, Weihua Li
Concept And Simulation Study Of A Novel Localization Method For Robotic Endoscopic Capsules Using Multiple Positron Emission Markers, Trung Duc Than, Gursel Alici, Steven Harvey, Hao Zhou, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
Purpose: Over the last decade, wireless capsule endoscope has been the tool of choice for noninvasive inspection of the gastrointestinal tract, especially in the small intestine. However, the latest clinical products have not been equipped with a sufficiently accurate localization system which makes it difficult to determine the location of intestinal abnormalities, and to apply follow-up interventions such as biopsy or drug delivery. In this paper, the authors present a novel localization method based on tracking three positron emission markers embedded inside an endoscopic capsule. Methods: Three spherical 22Na markers with diameters of less than 1 mm are embedded in …
A Novel Type Of One-Dimensional Organic Selenium-Containing Fiber With Superior Performance For Lithium-Selenium And Sodium-Selenium Batteries, Hongqiang Wang, Sha Li, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
A Novel Type Of One-Dimensional Organic Selenium-Containing Fiber With Superior Performance For Lithium-Selenium And Sodium-Selenium Batteries, Hongqiang Wang, Sha Li, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part A
A novel type of organic selenide fiber composed of carbonized polyacrylonitrile/selenium (CPAN/Se) has been synthesized by heating polyacrylonitrile-selenium (PAN-Se) fibers via the electrospinning technique at 600°C. The Se molecules are confined by N-containing carbon ring structures in the form of energy-storing selenium side chains in the carbonized PAN matrix. This unique stable chemical structure with a conductive carbon skeleton connected to the selenium side chains and excellent mechanical stability can allow CPAN/Se composite cathodes to be charged and discharged in a low-cost carbonate-based electrolyte with excellent long cycle stability and quite good rate performance. The superior electrochemical performance of CPAN/Se …
Design And Development Of A Novel Displacement Differential Self-Induced Magnetorheological Damper, Guoliang Hu, Yi Ru, Weihua Li
Design And Development Of A Novel Displacement Differential Self-Induced Magnetorheological Damper, Guoliang Hu, Yi Ru, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
This article presents the development of a novel magnetorheological damper which has a self-sensing ability. In this study, a linear variable differential sensor, which was based on the electromagnetic induction mechanism, was integrated with a conventional magnetorheological damper. The working principle, configuration, and prototype of the displacement differential self-induced magnetorheological damper based on the integrated linear variable differential sensor technology were presented. A mathematical model of the proposed displacement differential self-induced magnetorheological damper was established. The finite element model was built with two-dimensional Maxwell software and the magnetic simulations were presented. With this approach, the influence of the flux leakage, …
A Novel Approach For Ramp-Rate Control Of Solar Pv Using Energy Storage To Mitigate Output Fluctuations Caused By Cloud Passing, M J. E Alam, K M. Muttaqi, D Sutanto
A Novel Approach For Ramp-Rate Control Of Solar Pv Using Energy Storage To Mitigate Output Fluctuations Caused By Cloud Passing, M J. E Alam, K M. Muttaqi, D Sutanto
Faculty of Engineering and Information Sciences - Papers: Part A
The variability of solar irradiance with a high ramp-rate, caused by cloud passing, can create fluctuation in the PV output. In a weak distribution grid with a high PV penetration, this can create significant voltage fluctuations. Energy storage devices are used to smooth out the fluctuation using traditional moving average control. However, moving average does not control the ramp-rate directly; rather the ramp-rate depends on previous values of PV output. This paper proposes a strategy where the ramp-rate of PV panel output is used to control the PV inverter ramp-rate to a desired level by deploying energy storage (which can …
Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen
Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen
Faculty of Engineering and Information Sciences - Papers: Part A
This study examined the performance of a novel hybrid system of forward osmosis (FO) combined with vacuum membrane distillation (VMD) for reclaiming water from shale gas drilling flow-back fluid (SGDF). In the hybrid FO-VMD system, water permeated through the FO membrane into a draw solution reservoir, and the VMD process was used for draw solute recovery and clean water production. Using a SGDF sample obtained from a drilling site in China, the hybrid system could achieve almost 90% water recovery. Quality of the reclaimed water was comparable to that of bottled water. In the hybrid FO-VMD system, FO functions as …
Comparative Study Of Vehicle Tyre-Road Friction Coefficient Estimation With A Novel Cost-Effective Method, Boyuan Li, Haiping Du, Weihua Li
Comparative Study Of Vehicle Tyre-Road Friction Coefficient Estimation With A Novel Cost-Effective Method, Boyuan Li, Haiping Du, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
This paper qualitatively and quantitatively reviews and compares three typical tyre-road friction coefficient estimation methods, which are the slip slope method, individual tyre force estimation method and extended Kalman filter method, and then presents a new cost-effective tyre-road friction coefficient estimation method. Based on the qualitative analysis and the numerical comparisons, it is found that all of the three typical methods can successfully estimate the tyre force and friction coefficient in most of the test conditions, but the estimation performance is compromised for some of the methods during different simulation scenarios. In addition, all of these three methods need global …
High Di-Electric Constant Nano-Structure Ceramics Synthesis Using Novel Electric Discharge Assisted Mechanical Milling And Magneto Ball Milling And Its Properties, Azrin A. Chowdhury, Andrzej Calka, David Wexler, Konstantin Konstantinov
High Di-Electric Constant Nano-Structure Ceramics Synthesis Using Novel Electric Discharge Assisted Mechanical Milling And Magneto Ball Milling And Its Properties, Azrin A. Chowdhury, Andrzej Calka, David Wexler, Konstantin Konstantinov
Faculty of Engineering and Information Sciences - Papers: Part A
The conventional method to prepare functional oxides is ceramicpowder- based processing typically via solid-state reaction of microcrystalline starting powders at high temperatures. Disadvantages of this approach include the high temperatures of reaction, limited degree of product chemical homogeneity and difficulties in achieving rapid sintering. Various chemicalbased processing routes have been developed to prepare powders of more homogeneous composition, improved reactivity and sintering ability at low temperatures. Regardless of the route chosen to synthesise complex oxides, almost all of them require lengthy heat treatment schedules that usually exceed 10 h, as well as multi-stage processing steps. We describe two approaches to …
A Novel Membrane Distillation-Thermophilic Bioreactor System: Biological Stability And Trace Organic Compound Removal, Kaushalya Wijekoon, Faisal Ibney Hai, Jinguo Kang, William Price, Wenshan Guo, Hao H. Ngo, Tzahi Cath, Long Nghiem
A Novel Membrane Distillation-Thermophilic Bioreactor System: Biological Stability And Trace Organic Compound Removal, Kaushalya Wijekoon, Faisal Ibney Hai, Jinguo Kang, William Price, Wenshan Guo, Hao H. Ngo, Tzahi Cath, Long Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
The removal of trace organic compounds (TrOCs) by a novel membrane distillation-thermophilic bioreactor (MDBR) system was examined. Salinity build-up and the thermophilic conditions to some extent adversely impacted the performance of the bioreactor, particularly the removal of total nitrogen and recalcitrant TrOCs. While most TrOCs were well removed by the thermophilic bioreactor, compounds containing electron withdrawing functional groups in their molecular structure were recalcitrant to biological treatment and their removal efficiency by the thermophilic bioreactor was low (0-53%). However, the overall performance of the novel MDBR system with respect to the removal of total organic carbon, total nitrogen, and TrOCs …
Novel Algorithms For Complete Targets Coverage In Energy Harvesting Wireless Sensor Networks, Changlin Yang, Kwan-Wu Chin
Novel Algorithms For Complete Targets Coverage In Energy Harvesting Wireless Sensor Networks, Changlin Yang, Kwan-Wu Chin
Faculty of Engineering and Information Sciences - Papers: Part A
This paper addresses the problem of maximizing the network lifetime of rechargeable Wireless Sensor Networks (WSNs) whilst ensuring all targets are monitored continuously by at least one sensor node. The objective is to determine a group of sensor nodes, and their wake-up schedule such that within a time interval, one subset of nodes are active whilst others enter the sleep state to conserve energy as well as recharge their battery. We propose a Linear Programming (LP) based solution to determine the activation schedule of sensor nodes whilst affording them recharging opportunities and at the same time ensures complete target coverage. …
A Novel Proton Pencil Beam Scanning Technique For Postmastectomy Chest Wall Irradiation, Nicolas Depauw, E Batin, J Daartz, S Macdonald, Hanne Kooy, Hsaio-Ming Lu
A Novel Proton Pencil Beam Scanning Technique For Postmastectomy Chest Wall Irradiation, Nicolas Depauw, E Batin, J Daartz, S Macdonald, Hanne Kooy, Hsaio-Ming Lu
Faculty of Engineering and Information Sciences - Papers: Part A
Abstract of paper presented at the American Society for Radiation Oncology 56th Annual Meeting, San Francisco, United States, 14 - 17 September 2014.
A Novel Tuning Method For Advanced Line Drop Compensator And Its Application To Response Coordination Of Distributed Generation With Voltage Regulating Devices, Kashem M. Muttaqi, An D. T Le, Michael Negnevitsky, Gerard Ledwich
A Novel Tuning Method For Advanced Line Drop Compensator And Its Application To Response Coordination Of Distributed Generation With Voltage Regulating Devices, Kashem M. Muttaqi, An D. T Le, Michael Negnevitsky, Gerard Ledwich
Faculty of Engineering and Information Sciences - Papers: Part A
Nowadays, integration of small-scale electricity generators, known as Distributed Generation (DG), into distribution networks has become increasingly popular. This tendency together with the falling price of DG units has a great potential in giving the DG a better chance to participate in voltage regulation process, in parallel with other regulating devices already available in the distribution systems. The voltage control issue turns out to be a very challenging problem for distribution engineers, since existing control coordination schemes need to be reconsidered to take into account the DG operation. In this paper, a control coordination approach is proposed, which is able …
A Novel Hybrid-Link-Based Container Routing Model, Shuaian Wang
A Novel Hybrid-Link-Based Container Routing Model, Shuaian Wang
Faculty of Engineering and Information Sciences - Papers: Part A
Container routing determines how to transport containers from their origins to their destinations in a liner shipping network. Container routing needs to be solved a number of times as a subproblem in tactical-level decision planning of liner shipping operations. Container routing is similar to the multi-commodity flow problem. This research proposes a novel hybrid-link-based model that nests the existing origin-link-based and destination-link-based models as special cases. Moreover, the hybrid-link-based model is at least as compact as the origin-to-destination-link-based, origin-link-based and destination-link-based models in the literature.
A Novel Method Of Embedding Additional Information Into Tensor Diffusion Filtering As An Application For Multi-Modal Reconstruction In Et, D Kazantsev, Sebastien Ourselin, Brian F. Hutton, W. R B. Lionheart, Simon Arridge
A Novel Method Of Embedding Additional Information Into Tensor Diffusion Filtering As An Application For Multi-Modal Reconstruction In Et, D Kazantsev, Sebastien Ourselin, Brian F. Hutton, W. R B. Lionheart, Simon Arridge
Faculty of Engineering and Information Sciences - Papers: Part A
The fast development of hybrid imaging modalities in tomography, such as SPECT (single photon emission computed tomography)/CT (computed tomography), PET (positron emission tomography)/MRI (magnetic resonance imaging) and PET/CT, have increased an interest for reconstruction algorithms which are able to utilize a functional and anatomical information at the same time. In this paper a new method proposed for iterative reconstruction with anatomical prior in emission tomography (ET). The introduced regularization term is a modified anisotropic tensor diffusion filter which has shape-adapted smoothing properties. The filter accommodates available anatomical information which results in enhanced position and image dependent spatial resolution of emission …
Reliability Modeling And Analysis For A Novel Design Of Modular Converter System Of Wind Turbines, Cai Wen Zhang, Tieling Zhang, Nan Chen, Tongdan Jin
Reliability Modeling And Analysis For A Novel Design Of Modular Converter System Of Wind Turbines, Cai Wen Zhang, Tieling Zhang, Nan Chen, Tongdan Jin
Faculty of Engineering and Information Sciences - Papers: Part A
Converters play a vital role in wind turbines. The concept of modularity is gaining in popularity in converter design for modern wind turbines in order to achieve high reliability as well as cost-effectiveness. In this study, we are concerned with a novel topology of modular converter invented by Hjort, Modular converter system with interchangeable converter modules. World Intellectual Property Organization, Pub. No. WO29027520 A2; 5 March 2009, in this architecture, the converter comprises a number of identical and interchangeable basic modules. Each module can operate in either AC/DC or DC/AC mode, depending on whether it functions on the generator or …
Time-Domain Spectroscopy Of Novel Nematic Liquid Crystals In The Terahertz Range, Christian Weickhmann, R Jakoby, Evan Constable, R A. Lewis
Time-Domain Spectroscopy Of Novel Nematic Liquid Crystals In The Terahertz Range, Christian Weickhmann, R Jakoby, Evan Constable, R A. Lewis
Faculty of Engineering and Information Sciences - Papers: Part A
The dielectric properties of nematic liquid crystal (LC) mixtures are measured from 300 GHz to 1500 GHz. Measurements are performed in a standard THz TDS setup. Refractive index and extinction coefficient for parallel and perpendicular orientation are calculated and compared to results obtained at 19 GHz. The investigated mixtures are of interest for Terahertz devices as their properties stay almost constant from 19 GHz to 1500 GHz.
A Novel Formulation For Optimum Conceptual Design Of Buildings Of Rectangular Shapes, Pezhman Sharafi, Muhammad Hadi, Lip H. Teh
A Novel Formulation For Optimum Conceptual Design Of Buildings Of Rectangular Shapes, Pezhman Sharafi, Muhammad Hadi, Lip H. Teh
Faculty of Engineering and Information Sciences - Papers: Part A
In many optimum design cases, we look for a set of design variables selected from a given list which assure the optimum of objective function together with satisfaction of the constraints. That is, optimum conceptual design mostly consists of selecting the best combination of a finite number of structural elements and the available parameters. In this paper a novel technique is presented for the conceptual design optimization of framed buildings with a rectangular plan. The method supports all the buildings with grid pattern column layout. To that end, we take advantage of the knapsack problem as a basic applied combinatorial …
A Novel Mr Device With Variable Stiffness And Damping Capability, Shiyu Zhao, Huaxia Deng, Jin Zhang, Liandong Yu, Shuaishuai Sun, Weihua Li, Laijun Zhou
A Novel Mr Device With Variable Stiffness And Damping Capability, Shiyu Zhao, Huaxia Deng, Jin Zhang, Liandong Yu, Shuaishuai Sun, Weihua Li, Laijun Zhou
Faculty of Engineering and Information Sciences - Papers: Part A
This paper proposes a novel device based on the Magnetorheological (MR) fluid which has the capability to change stiffness and damping under control. MR fluid is a type of smart material whose properties could be controlled by the external magnetic field. Most of MR devices are MR dampers, which normally are used as variable damping devices. The presented device consists of two hydro-cylinder-spring structures and one MR valve linking these two structures. The rheological characteristics of MR fluid in the fluid flow channels of MR valve are controlled by the strength of magnetic fields, which directly affect the link conditions. …
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 …