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Articles 811 - 840 of 14367

Full-Text Articles in Social and Behavioral Sciences

Polo-Like Kinase 1 Inhibitor Bi6727 Sensitizes 9l Gliosarcoma Cells To Ionizing Irradiation, Nan Li, Elette Engels, Jeremy A. Davis, Andrew Dipuglia, Sarah Vogel, Michael Valceski, Anatoly B. Rosenfeld, Michael L. F Lerch, Stephanie Corde, Moeava Tehei Jan 2019

Polo-Like Kinase 1 Inhibitor Bi6727 Sensitizes 9l Gliosarcoma Cells To Ionizing Irradiation, Nan Li, Elette Engels, Jeremy A. Davis, Andrew Dipuglia, Sarah Vogel, Michael Valceski, Anatoly B. Rosenfeld, Michael L. F Lerch, Stephanie Corde, Moeava Tehei

Faculty of Engineering and Information Sciences - Papers: Part B

Surgery, chemotherapy and radiotherapy remain as the major treatment strategies for cancers. Some agents such as anti-cancer drugs have capacity to enhance the radiation sensitivity of cancer cells at G2/M phase, leading to an improved radiotherapeutic efficacy. BI6727 is an ATP-competitive pololike kinase 1 (Plk 1)inhibitor and an anti-cancer drug. Using the radio-resistant 9L rat gliosarcoma cells as model, we examined the effect of BI6727 on cell growth and assessed the chemoradiotherapeutic efficiency between 150 kVp conventional irradiation (dose rate of 0.76 Gy min−1 ) and 66 keV synchrotron x-ray broad beam irradiation (dose rate of 46 Gy s−1). Our …

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Phase-Specific Properties In A Low-Alloyed Trip Steel Investigated Using Correlative Nanoindentation Measurements And Electron Microscopy, Zhiping Xiong, Ahmed A. Saleh, Gilberto Casillas, Shaogang Cui, Elena V. Pereloma Jan 2019

Phase-Specific Properties In A Low-Alloyed Trip Steel Investigated Using Correlative Nanoindentation Measurements And Electron Microscopy, Zhiping Xiong, Ahmed A. Saleh, Gilberto Casillas, Shaogang Cui, Elena V. Pereloma

Faculty of Engineering and Information Sciences - Papers: Part B

Nanoindentation measurements of polygonal ferrite (PF), bainitic ferrite (BF) lath, ferrite in granular bainite (GB) and retained austenite (RA) in a low-alloyed multi-phase transformation-induced plasticity steel were carried out in conjunction with electron backscattering diffraction and scanning transmission electron microscopy (STEM). PF returned the lowest hardness followed by ferrite in GB, BF lath and RA. Dislocation glide and austenite-to-martensite transformation can be correlated with the first and second pop-in observed in the load-displacement curve, respectively. The martensite transformation induced by nanoindentation was demonstrated via correlative STEM. Film RA generally shows a higher stability than blocky RA, associated with a larger …

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A Combination Of Keyhole Gtaw With A Trapezoidal Interlayer: A New Insight Into Armour Steel Welding, Zhenyu Fei, Zengxi Stephen Pan, Dominic Cuiuri, Hui Jun Li, Azdiar Adil Gazder Jan 2019

A Combination Of Keyhole Gtaw With A Trapezoidal Interlayer: A New Insight Into Armour Steel Welding, Zhenyu Fei, Zengxi Stephen Pan, Dominic Cuiuri, Hui Jun Li, Azdiar Adil Gazder

Faculty of Engineering and Information Sciences - Papers: Part B

The ballistic performance of armour steel welds using austenitic filler materials is poor on account of the disparity in the mechanical properties of the weld and base metals. Consequently, a novel Keyhole Gas Tungsten ArcWelding process with a trapezoidal AISI309 austenitic stainless steel interlayer was developed to tailor chemical composition and microstructure by controlling the solidification sequence. Results show that the dilution rate in the weld metal region can reach up to 43.5% by placing a specially designed interlayer in between the base metal, providing a major scope for microstructure modification. Detailed weld analysis was undertaken by X-ray diffraction, optical …

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3d Printable Linear Soft Vacuum Actuators: Their Modeling, Performance Quantification And Application In Soft Robotic Systems, Charbel Tawk, Geoffrey M. Spinks, Marc In Het Panhuis, Gursel Alici Jan 2019

3d Printable Linear Soft Vacuum Actuators: Their Modeling, Performance Quantification And Application In Soft Robotic Systems, Charbel Tawk, Geoffrey M. Spinks, Marc In Het Panhuis, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part B

Conventional robotic systems have proved their versatility in the industry where complex tasks requiring high force, high speed and high precision are desired. However, these rigid-bodied systems cannot collaborate safely with humans. Soft robots which are primarily made of highly compliant materials bring robots and humans together by operating safely in unstructured environments. Soft robots demand dexterous soft actuators that preserve or enhance their softness and safety features. This article reports on modeling, performance quantification, and soft robotic applications of directly three-dimensional (3-D) printed linear soft vacuum actuators (LSOVA), that are manufactured in a single step, using a low-cost and …

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Robust Adaptive Sliding Mode Pi Control For Active Vehicle Seat Suspension Systems, Wenxing Li, Haiping Du, Donghong Ning, Weihua Li Jan 2019

Robust Adaptive Sliding Mode Pi Control For Active Vehicle Seat Suspension Systems, Wenxing Li, Haiping Du, Donghong Ning, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, a robust adaptive sliding mode proportional integral control (RASMPIC) method is proposed for an active vehicle seat suspension system, where the driver's mass is supposed as an unknown parameter with boundaries. A dynamic active seat suspension system is established at first. Then a sliding mode controller (SMC) is designed to achieve the required ride comfort performance based on the driver's mass estimated by utilizing an adaptive law where a projecting adaptive algorithm is used to prevent the estimated parameters from surpassing their boundaries to enhance the robustness of the seat suspension system. Also, a proportional and integral …

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Flexible Surface Electrodes Targeting Biopotential Signals From Forearm Muscles For Control Of Prosthetic Hands: Part 2 - Characterization Of Substrates For Strain Sensors, Siobhan O'Brien, Thomas Searle, Gursel Alici Jan 2019

Flexible Surface Electrodes Targeting Biopotential Signals From Forearm Muscles For Control Of Prosthetic Hands: Part 2 - Characterization Of Substrates For Strain Sensors, Siobhan O'Brien, Thomas Searle, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part B

This study investigates the use of stretchable strain sensors as an alternative to the gold standard Ag/AgCl surface electromyography (sEMG) electrodes currently utilised to identify movement intention from a user during common hand gestures. Further building on the research in the companion paper, this study documents a series of strain characterisation experiments undertaken on three conductive textiles, two commercial conductive elastomers and one E-skin elastomer produced on site to determine the linearity of each sensor, along with the magnitude of hysteresis in a single stretch and release cycle, and any creep effects present. Gesture identification testing was performed in vivo …

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Fully 3d Printed Monolithic Soft Gripper With High Conformal Grasping Capability, Charbel Tawk, Yuan Gao, Rahim Mutlu, Gursel Alici Jan 2019

Fully 3d Printed Monolithic Soft Gripper With High Conformal Grasping Capability, Charbel Tawk, Yuan Gao, Rahim Mutlu, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part B

The recent advances in material science and engineering disciplines have had a significant impact on the robotics field where numerous bioinspired soft robots have been developed. Roboticists can now develop and fabricate soft robotic systems made of materials with low elasticity using additive manufacturing technologies. One of the most studied classes of soft robotic systems is soft adaptive grippers. In this work, we present a novel fully 3D printed soft pneumatic gripper that incorporates a novel design of soft pneumatic chambers and a bioinspired fin-ray structure for conformal grasping. The soft gripper was printed in a single step using a …

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Lattice-Based Ibe With Equality Test In Standard Model, Dung Hoang Duong, Quoc Huy Le, Partha Sarathi Roy, Willy Susilo Jan 2019

Lattice-Based Ibe With Equality Test In Standard Model, Dung Hoang Duong, Quoc Huy Le, Partha Sarathi Roy, Willy Susilo

Faculty of Engineering and Information Sciences - Papers: Part B

Public key encryption with equality test (PKEET) allows the testing of equality of underlying messages of two ciphertexts. PKEET is a potential candidate for many practical applications like efficient data management on encrypted databases. Identity-based encryption scheme with equality test (IBEET), which was introduced by Ma (Information Science 2016), can simplify the certificate management of PKEET. Potential applicability of IBEET leads to intensive research from its first instantiation. Ma’s IBEET and most of the constructions are proven secure in the random oracle model based on number-theoretic hardness assumptions which are vulnerable in the post-quantum era. Recently, Lee et al. (ePrint …

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A Novel Quality Assurance System For Eye Plaque Brachytherapy, Alannah Kejda, Dean L. Cutajar, Michael R. Weaver, Marco Petasecca, Anatoly B. Rosenfeld Jan 2019

A Novel Quality Assurance System For Eye Plaque Brachytherapy, Alannah Kejda, Dean L. Cutajar, Michael R. Weaver, Marco Petasecca, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

Eye Plaque brachytherapy pre-treatment quality assurance (QA) conducted clinically involves an activity verification of individual seeds via well chamber and does not include a physical measurement of dose-rate of the final assembly. A novel spectroscopic, dose-rate detection system, was evaluated for pre-treatment QA of eye plaque brachytherapy. The system includes a water phantom with sterility management. The system was calibrated using a known-activity I-125 seed, measured at 1 cm in water along the radial axis, compared to TG-43 U1 calculations and verified over a number of distances. A depth dose curve was acquired for a clinical, mixed activity eye plaque …

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Analog Least Mean Square Loop For Self-Interference Cancellation: Implementation And Measurements, Anh Tuyen Le, Le Chung Tran, Xiaojing Huang, Y. Jay Guo Jan 2019

Analog Least Mean Square Loop For Self-Interference Cancellation: Implementation And Measurements, Anh Tuyen Le, Le Chung Tran, Xiaojing Huang, Y. Jay Guo

Faculty of Engineering and Information Sciences - Papers: Part B

Analog least mean square (ALMS) loop is a simple and efficient adaptive filter to cancel self-interference (SI) in in-band full-duplex (IBFD) radios. This paper proposes a practical structure and presents an implementation of the ALMS loop. By employing off-the-shelf components, a prototype of the ALMS loop including two taps is implemented. The prototype is evaluated in IBFD systems which have 20 MHz and 50 MHz bandwidths, respectively, with the carrier frequency of 2.4 GHz. The performance of the prototype with different roll-off factors of the transmit pulse shaping filter is also examined. Experimental results show that the ALMS loop can …

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Ftn Signaling-Aided Space-Time Multi-Mode Index Modulation Systems With A Gmp-Based Receiver, Shaoang Li, Nan Wu, Qiaolin Shi, Qinghua Guo Jan 2019

Ftn Signaling-Aided Space-Time Multi-Mode Index Modulation Systems With A Gmp-Based Receiver, Shaoang Li, Nan Wu, Qiaolin Shi, Qinghua Guo

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, we propose a faster-than-Nyquist (FTN) signaling-aided space-time multi-mode index modulation (IM) scheme with a low-complexity Gaussian message passing (GMP) based receiver. The advantages of spatial domain IM, time-domain IM relying on multiple modes and FTN signaling are explored. Specifically, multi-mode IM is employed in time domain by activating all time slots, hence the spectral efficiency is improved substantially compared to its single-mode counterpart. Meanwhile, the transmission rate is further increased by utilizing FTN signaling. At the receiver, based on the state-space model of IM symbols, a two-layer Forney style factor graph (FG) representation for the system is …

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A Fringe Projection Profilometry Scheme Based On Embedded Speckle Patterns And Robust Principal Component Analysis, Yiwei Zhang, Jun Tong, Jiangtao Xi, Chengpu Duan, Yanguang Yu, Qinghua Guo, Lei Lu Jan 2019

A Fringe Projection Profilometry Scheme Based On Embedded Speckle Patterns And Robust Principal Component Analysis, Yiwei Zhang, Jun Tong, Jiangtao Xi, Chengpu Duan, Yanguang Yu, Qinghua Guo, Lei Lu

Faculty of Engineering and Information Sciences - Papers: Part B

2019 SPIE. Phase unwrapping is one of the key steps for fringe projection profilometry (FPP)-based 3D shape measurements. Conventional spatial phase unwrapping schemes are sensitive to noise and discontinuities, which may suffer from low accuracies. Temporal phase unwrapping is able to improve the reliability but often requires the acquisition of additional patterns, increasing the measurement time or hardware costs. This paper introduces a novel phase unwrapping scheme that utilizes composite patterns consisting of the superposition of standard sinusoidal patterns and randomly generated speckles. The low-rankness of the deformed sinusoidal patterns is studied. This is exploited together with the sparse nature …

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Optimizing Vibration Attenuation Performance Of A Magnetorheological Damper-Based Semi-Active Seat Suspension Using Artificial Intelligence, Xinhua Liu, Ningning Wang, Kun Wang, Hui Huang, Zhixiong Li, Thompson Sarkodie-Gyan, Weihua Li Jan 2019

Optimizing Vibration Attenuation Performance Of A Magnetorheological Damper-Based Semi-Active Seat Suspension Using Artificial Intelligence, Xinhua Liu, Ningning Wang, Kun Wang, Hui Huang, Zhixiong Li, Thompson Sarkodie-Gyan, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part B

© Copyright © 2019 Liu, Wang, Wang, Huang, Li, Sarkodie-Gyan and Li. This paper aims to improve control performance for a magnetorheological damper (MRD)-based semi-active seat suspension system. The vibration of the suspension is isolated by controlling the stiffness of the MRD using a proportion integration differentiation (PID) controller. A new intelligent method for optimizing the PID parameters is proposed in this work. This new method appropriately incorporates particle swarm optimization (PSO) into the PID-parameter searching processing of an improved fruit fly optimization algorithm (IFOA). Thus, the PSO-IFOA method possesses better optimization ability than IFOA and is able to find …

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Experimental Investigation And Performance Analysis Of An Organic Rankine Cycle For Low-Temperature Heat To Electricity Generation, Lili Wei, Zhenjun Ma, Xuemei Gong, Xiujuan Guo Jan 2019

Experimental Investigation And Performance Analysis Of An Organic Rankine Cycle For Low-Temperature Heat To Electricity Generation, Lili Wei, Zhenjun Ma, Xuemei Gong, Xiujuan Guo

Faculty of Engineering and Information Sciences - Papers: Part B

© 2019 The Author(s) 2019. Published by Oxford University Press. This paper presents experimental investigation of low-temperature heat to electricity generation system based on Organic Rankine Cycle (ORC) using R152a as the working fluid. Both energy efficiency and exergy efficiency were analyzed based on the experiments. Although energy efficiency was low to 5.0% when the evaporating and cooling temperatures were 65°C and 11°C, respectively, the exergy efficiency reached 25%, which showed great competitiveness among low-temperature heat utilization technologies. To reveal the energy recovery proportion from the waste heat, both energy extraction efficiency and exergy extraction efficiency as well as energy …

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Uncertainty Analysis Of The Limits To Growth Model: Sensitivity Is High, But Trends Are Stable, Ashley Heath, Brad Stappenbelt, Montserrat Ros Jan 2019

Uncertainty Analysis Of The Limits To Growth Model: Sensitivity Is High, But Trends Are Stable, Ashley Heath, Brad Stappenbelt, Montserrat Ros

Faculty of Engineering and Information Sciences - Papers: Part B

©2019 A.W. Heath et al. Uncertainty analysis is an important step in determining the reliability of a model. Models which are used to determine policies or guide decisions must be reliable to ensure sound choices are made. The Limits to Growth model by Donella Meadows and colleagues was one of the first computer models to investigate global issues of population growth and resource constraints. The model received much attention and criticism, sometimes being accused of being too sensitive to variations in input parameters. This paper studies the model's sensitivity to input error through an uncertainty analysis, and examines if this …

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Periodic Topology Optimization Of A Stacker Crane, Hongyu Jiao, Feng Li, Zhengyi Jiang, Ying Li, Zhao Yu Jan 2019

Periodic Topology Optimization Of A Stacker Crane, Hongyu Jiao, Feng Li, Zhengyi Jiang, Ying Li, Zhao Yu

Faculty of Engineering and Information Sciences - Papers: Part B

© 2013 IEEE. The stacker crane is a long-and-thin structure with a large length-to-width ratio. It is difficult to obtain a topology configuration with good period properties using traditional optimization methods. While the mathematical model of periodic topology optimization - in which the elements' relative densities are selected as design variables, and mean compliance as the objective function - is established. To find a topology configuration with a good period property, an additional constraint condition must be imported into the mathematical model. According to the optimization criteria method, the iterative formula of design variables is derived in the virtual sub …

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Achieving High Resolution Measurement Using Laser Diode Operating At Period One, Yuxi Ruan, Bairun Nie, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong, Zhuqiu Chen Jan 2019

Achieving High Resolution Measurement Using Laser Diode Operating At Period One, Yuxi Ruan, Bairun Nie, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong, Zhuqiu Chen

Faculty of Engineering and Information Sciences - Papers: Part B

Copyright 2019 SPIE. When a part of light emitted by a laser is back-reflected or back-scattered from an external target and re-enters the laser cavity, both the laser intensity and its wavelength can be modulated. This is so-called self-mixing effect (SME), the optical feedback interferometry (OFI) utilizes such effect in an LD developed various applications. In this paper, we use a dualcavity OFI system that operating in period one state, the laser intensity from this system exhibits an oscillation with its amplitude modulated by a traditional single cavity OFI signal. The dual-cavity OFI system has the same measurement resolution as …

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Effect Of Windowing On A Sensing Signal Generated By Self-Mixing Interferometry, Han Wang, Yuxi Ruan, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong Jan 2019

Effect Of Windowing On A Sensing Signal Generated By Self-Mixing Interferometry, Han Wang, Yuxi Ruan, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Faculty of Engineering and Information Sciences - Papers: Part B

Copyright 2019 SPIE. The laser diode (LD) is modulated by the injection current of triangular waveform and a photo diode (PD) is packaged in the rear of the LD. The laser reflected by the target re-enters the cavity of LD and contains the target's displacement information. The information is carried within the laser intensity and can be pickup by the PD. We call this laser intensity as self-mixing interferometry (SMI) signal. While processing the sensing SMI signals, we should carefully determine the windowing function and reduce the effect of windowing in the FFT and IFFT process while applying the mathematical …

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A Two-Layer Channel Access Approach For Rf-Energy Harvesting Networks, Hang Yu, Kwan-Wu Chin Jan 2019

A Two-Layer Channel Access Approach For Rf-Energy Harvesting Networks, Hang Yu, Kwan-Wu Chin

Faculty of Engineering and Information Sciences - Papers: Part B

2013 IEEE. We consider a Hybrid Access Point (HAP) that charges one or more energy harvesting devices via Radio Frequency (RF). These devices then transmit their data to the HAP. To date, prior works assume devices use Time Division Multiple Access (TDMA) for channel access, and these devices are able to transmit using any amounts of harvested energy. By contrast, we consider Dynamic Framed Slotted Aloha (DFSA) and devices can only transmit if they have sufficient energy. Moreover, nodes are not aware of each other's energy level, meaning the HAP and devices are unaware of the number of devices that …

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Numerically Pricing Convertible Bonds Under Stochastic Volatility Or Stochastic Interest Rate With An Adi-Based Predictor-Corrector Scheme, Sha Lin, Song-Ping Zhu Jan 2019

Numerically Pricing Convertible Bonds Under Stochastic Volatility Or Stochastic Interest Rate With An Adi-Based Predictor-Corrector Scheme, Sha Lin, Song-Ping Zhu

Faculty of Engineering and Information Sciences - Papers: Part B

2019 Elsevier Ltd In this paper, the pricing problem for the American-style convertible bonds with the Heston stochastic volatility and that with the Cox-Ingersoll-Ross (CIR) stochastic interest rate are both considered. Due to the complexity of both problems, resulting from an additional stochastic factor, it is almost impossible to find any analytical solution. Therefore, a predictor-corrector scheme is chosen as the numerical scheme to solve the partial differential equations (PDEs), with the Douglas-Rachford (D-R) method being utilized as one of the Alternating Direction Implicit (ADI) methods for the correction step to obtain the numerical solution. Finally, the accuracy of our …

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Untwisting Twisted Spectral Triples, Magnus Goffeng, Bram Mesland, Adam C. Rennie Jan 2019

Untwisting Twisted Spectral Triples, Magnus Goffeng, Bram Mesland, Adam C. Rennie

Faculty of Engineering and Information Sciences - Papers: Part B

2019 World Scientific Publishing Company. We examine the index data associated to twisted spectral triples and higher order spectral triples. In particular, we show that a Lipschitz regular twisted spectral triple can always be "logarithmically dampened" through functional calculus, to obtain an ordinary (i.e. untwisted) spectral triple. The same procedure turns higher order spectral triples into spectral triples. We provide examples of highly regular twisted spectral triples with nontrivial index data for which Moscovici's ansatz for a twisted local index formula is identically zero.

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Facilitating Application-Aware Bandwidth Allocation In The Cloud With One-Step-Ahead Traffic Information, Dian Shen, Junzhou Luo, Fang Dong, Jiahui Jin, Junxue Zhang, Jun Shen Jan 2019

Facilitating Application-Aware Bandwidth Allocation In The Cloud With One-Step-Ahead Traffic Information, Dian Shen, Junzhou Luo, Fang Dong, Jiahui Jin, Junxue Zhang, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part B

Bandwidth allocation to virtual machines (VMs) has a significant impact on the performance of communication-intensive big data applications hosted in VMs. It is crucial to accurately determine how much bandwidth to be reserved for VMs and when to adjust it. Past approaches typically resort to predicting the long-term network demands of applications for bandwidth allocation. However, lacking of prediction accuracy, these methods lead to the unpredictable application performance. Recently, it is conceded that the network demands of applications can only be accurately derived right before each of their execution phases. Hence, it is challenging to timely allocate the bandwidth to …

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Formula For Sediment Transport Subject To Vertical Flows, Shu-Qing Yang Jan 2019

Formula For Sediment Transport Subject To Vertical Flows, Shu-Qing Yang

Faculty of Engineering and Information Sciences - Papers: Part B

Sediment transport is a geophysical phenomenon in which sediment particles are driven to move in streamwise and vertical directions by various forces. Almost all existing formulas of sediment transport were derived without considering vertical flows V, resulting in a large discrepancy between measured and predicted transport rates, as has been reported in the literature. This paper investigates the effect of vertical motion on sediment transport. It was found that upward fluid velocity increases particles' mobility, and downward motion increases particles stability. Furthermore, the investigation showed that decelerating flows can promote upward flow and vice versa. New equations were developed to …

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Mixed Convection Of Non-Newtonian Nanofluid In An H-Shaped Cavity With Cooler And Heater Cylinders Filled By A Porous Material: Two Phase Approach, Zhixiong Li, Pouya Barnoon, Davood Toghraie, Reza Balali Dehkordi, Masoud Afrand Jan 2019

Mixed Convection Of Non-Newtonian Nanofluid In An H-Shaped Cavity With Cooler And Heater Cylinders Filled By A Porous Material: Two Phase Approach, Zhixiong Li, Pouya Barnoon, Davood Toghraie, Reza Balali Dehkordi, Masoud Afrand

Faculty of Engineering and Information Sciences - Papers: Part B

In the present problem, two-phase mixed convection of a non-Newtonian nanofluid in a porous H-shaped cavity is studied. Inside the enclosure there are four rotating cylinders, using the Boussinesq approximation, mixed convection is created. Nanofluid includes H2O + 0.5% CMC and copper oxide nanoparticles. The mixture model was used to model physical phenomena. Different aspect ratios were used in order to achieve the best heat transfer rate. The Darcy and Richardson numbers ranges are 10−4 ≤ Da ≤ 10−2 and 1 ≤ Ri ≤ 100 respectively. Also, the aspect ratio and dimensionless angular velocities of cylinders ranges are 1.4 ≤ …

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Non-Linear Tyre Model-Based Non-Singular Terminal Sliding Mode Observer For Vehicle Velocity And Side-Slip Angle Estimation, Boyuan Li, Haiping Du, Weihua Li, Bangji Zhang Jan 2019

Non-Linear Tyre Model-Based Non-Singular Terminal Sliding Mode Observer For Vehicle Velocity And Side-Slip Angle Estimation, Boyuan Li, Haiping Du, Weihua Li, Bangji Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

Vehicle velocity and side-slip angle are important vehicle states for the electronic stability programme and traction control system in vehicle safety control system and for the control allocation method of electric vehicles with in-wheel motors. This paper proposes an innovative side-slip angle estimator based on the non-linear Dugoff tyre model and non-singular terminal sliding mode observer. The proposed estimation method based on the non-linear tyre model can accurately present the tyre's non-linear characteristics and can show advantages over estimation methods based on the linear tyre model. The utilised Dugoff tyre model has a relatively simple structure with few parameters, and …

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Robust Entangled-Photon Ghost Imaging With Compressive Sensing, Jun Li, Wenyu Gao, Jiachuan Qian, Qinghua Guo, Jiangtao Xi, Christian H. Ritz Jan 2019

Robust Entangled-Photon Ghost Imaging With Compressive Sensing, Jun Li, Wenyu Gao, Jiachuan Qian, Qinghua Guo, Jiangtao Xi, Christian H. Ritz

Faculty of Engineering and Information Sciences - Papers: Part B

This work experimentally demonstrates that the imaging quality of quantum ghost imaging (GI) with entangled photons can be significantly improved by properly handling the errors caused by the imperfection of optical devices. We also consider compressive GI to reduce the number of measurements and thereby the data acquisition time. The image reconstruction is formulated as a sparse total least square problem which is solved with an iterative algorithm. Our experiments show that, compared with existing methods, the new method can achieve a significant performance gain in terms of mean square error and peak signal⁻noise ratio.

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Emerging Insights Of Health Informatics Research: A Literature Analysis For Outlining New Themes, Shah Miah, Jun Shen, John W. Lamp, Don Kerr, John Gammack Jan 2019

Emerging Insights Of Health Informatics Research: A Literature Analysis For Outlining New Themes, Shah Miah, Jun Shen, John W. Lamp, Don Kerr, John Gammack

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents a contemporary literature review to provide insights into the current health informatics literature. The objective of this study is to identify emerging directions of current health informatics research from the latest and existing studies in the health informatics domain. We analyse existing health informatics studies using a thematic analysis, so that justified sets of research agenda can be outlined on the basis of these findings. We selected articles that are published in the Science Direct online database. The selected 73 sample articles (published from 2014 to 2018 in premier health informatics journals) are considered as representative samples …

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Soi Thin Microdosimeter Detectors For Low Energy Ions And Radiation Damage Studies, Benjamin James, Linh T. Tran, James Vohradsky, David Bolst, Vladimir Pan, Madeline Carr, Susanna Guatelli, Alex Pogossov, Marco Petasecca, Michael L. F Lerch, Dale A. Prokopovich, Mark I. Reinhard, Marco Povoli, Angela Kok, David Hinde, Mahananda Dasgupta, Andrew Stuchbery, Vladimir Perevertaylo, Anatoly B. Rosenfeld Jan 2019

Soi Thin Microdosimeter Detectors For Low Energy Ions And Radiation Damage Studies, Benjamin James, Linh T. Tran, James Vohradsky, David Bolst, Vladimir Pan, Madeline Carr, Susanna Guatelli, Alex Pogossov, Marco Petasecca, Michael L. F Lerch, Dale A. Prokopovich, Mark I. Reinhard, Marco Povoli, Angela Kok, David Hinde, Mahananda Dasgupta, Andrew Stuchbery, Vladimir Perevertaylo, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

The responses of two silicon on insulator (SOI) 3-D microdosimeters developed by the Centre for Medical Radiation Physics were investigated with a range of different low energy ions, with high linear energy transfer (LET). The two microdosimeters n-SOI and p-SOI were able to measure the LET of different ions including 7 Li, 12 C, 16 O, and 48 Ti with ranges below 350 μm in silicon. No plasma effects were seen in the SOI microdosimeters when irradiated with the high LET ions. A Monte Carlo simulation using Geant4 was compared to the experimental measurements, whereby some discrepancies were observed for …

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Accurate Magneto-Optical Determination Of Radius Of Topological Nodal-Ring Semimetals, Wenye Duan, Cuihong Yang, Zhongshui Ma, Yiming Zhu, C Zhang Jan 2019

Accurate Magneto-Optical Determination Of Radius Of Topological Nodal-Ring Semimetals, Wenye Duan, Cuihong Yang, Zhongshui Ma, Yiming Zhu, C Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

The shape of the Fermi surface of topological nodal-ring semimetals at low carrier concentrations is characterized by the ring radius b/ℏvF. This peculiar topological property may not have a clear signature in measurable physical quantities. We demonstrate an accurate and definitive method to determine the radius of topological nodal-ring semimetals. Under a magnetic field along the ring axis, the axial magneto-optical response (σzz) has a giant peak. The position of this ultrastrong response is at the frequency of exactly 2b and is independent of the strength of the magnetic field. The amplitude of the peak response is many times stronger …

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Numerical Analysis Of Axially Loaded Circular High Strength Concrete-Filled Double Steel Tubular Short Columns, Mizen Ahmed, Qing Quan Liang, Vipulkumar I. Patel, Muhammad N. S Hadi Jan 2019

Numerical Analysis Of Axially Loaded Circular High Strength Concrete-Filled Double Steel Tubular Short Columns, Mizen Ahmed, Qing Quan Liang, Vipulkumar I. Patel, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Circular high-strength concrete-filled double steel tubular (CFDST) columns are high performance members where the internal and external steel tubes offer significant confinement to the concrete infill. The confinement remarkably improves the concrete compressive strength and ductility. However, no fiber element models have been formulated for computing the responses of CFDST columns with circular steel tubes filled with high-strength concrete incorporating accurate confinement to the core and sandwiched concrete. In this paper, a new fiber-based numerical model is developed that computes the axial load-strain responses of circular high-strength CFDST short columns under axial loading. Based on existing experimental results, a new …

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