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Articles 100531 - 100560 of 713719

Full-Text Articles in Social and Behavioral Sciences

Developing An Ontology For Representing The Domain Knowledge Specific To Non-Pharmacological Treatment For Agitation In Dementia, Zhenyu Zhang, Ping Yu, H.C. Chang, S K. Lau, Cui Tao, Ning Wang, Mengyang Yin, Chao Deng Jan 2020

Developing An Ontology For Representing The Domain Knowledge Specific To Non-Pharmacological Treatment For Agitation In Dementia, Zhenyu Zhang, Ping Yu, H.C. Chang, S K. Lau, Cui Tao, Ning Wang, Mengyang Yin, Chao Deng

Faculty of Engineering and Information Sciences - Papers: Part B

Introduction: A large volume of clinical care data has been generated for managing agitation in dementia. However, the valuable information in these data has not been used effectively to generate insights for improving the quality of care. Application of artificial intelligence technologies offers us enormous opportunities to reuse these data. For health data science to achieve this, this study focuses on using ontology to coding clinical knowledge for non-pharmacological treatment of agitation in a machine-readable format. Methods: The resultant ontology—Dementia-Related Agitation Non-Pharmacological Treatment Ontology (DRANPTO)—was developed using a method adopted from the NeOn methodology. Results: DRANPTO consisted of 569 concepts …

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On The Impact Of Internal Gains And Comfort Band On The Effectiveness Of Building Thermal Zoning, Massimo Fiorentini, Laia Ledo Gomis, Dong Chen, Paul Cooper Jan 2020

On The Impact Of Internal Gains And Comfort Band On The Effectiveness Of Building Thermal Zoning, Massimo Fiorentini, Laia Ledo Gomis, Dong Chen, Paul Cooper

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Authors Thermal zoning is a commonly adopted building energy efficiency initiative, since thermally segregating conditioned spaces is generally expected to minimise energy losses when conditioning unoccupied spaces. When comparing a partitioned building with widely differing heat gains between zones to an equivalent non-partitioned building, ‘zoning’ might not always beneficial. This paper analyses the fundamental thermal processes involved in these scenarios by firstly undertaking a number of steady state analyses, demonstrating that there are scenarios where the thermal energy required to maintain comfort conditions is less for an open-plan arrangement than for a more highly partitioned building. We …

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A Review On Wire Arc Additive Manufacturing: Monitoring, Control And A Framework Of Automated System, Chunyang Xia, Zengxi Stephen Pan, Joseph W. Polden, Hui Jun Li, Yanling Xu, Shanben Chen, Yuming Zhang Jan 2020

A Review On Wire Arc Additive Manufacturing: Monitoring, Control And A Framework Of Automated System, Chunyang Xia, Zengxi Stephen Pan, Joseph W. Polden, Hui Jun Li, Yanling Xu, Shanben Chen, Yuming Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Society of Manufacturing Engineers Wire arc additive manufacturing technology (WAAM) has become a very promising alternative to high-value large metal components in many manufacturing industries. Due to its long process cycle time and arc-based deposition, defect monitoring, process stability and control are critical for the WAAM system to be used in the industry. Although major progress has been made in process development, path slicing and programming, and material analysis, a comprehensive process monitoring, and control system are yet to be developed. This paper aims to provide an in-depth review of sensing and control design suitable for a …

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Model Predictive Control Of Layer Width In Wire Arc Additive Manufacturing, Chunyang Xia, Zengxi Stephen Pan, Shiyu Zhang, Joseph W. Polden, Long Wang, Hui Jun Li, Yanling Xu, Shanben Chen Jan 2020

Model Predictive Control Of Layer Width In Wire Arc Additive Manufacturing, Chunyang Xia, Zengxi Stephen Pan, Shiyu Zhang, Joseph W. Polden, Long Wang, Hui Jun Li, Yanling Xu, Shanben Chen

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Society of Manufacturing Engineers Wire arc additive manufacturing (WAAM) is an emerging technology in the manufacturing industry, which uses a welding arc as an energy source to fuse metal wire and deposit layer by layer. In order to promote its manufacture precision, stability, and repeatability, it's crucial to develop a feedback control strategy for WAAM. This research implements vision-based feedback control for the layer width during the WAAM process. A WAAM system is developed using a robot and CMT welder with a visual sensing system. The dynamics of the layer width in WAAM process is modeled experimentally. …

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Fusing Multilevel Deep Features For Fabric Defect Detection Based Ntv-Rpca, Yan Dong, Junpu Wang, Chunlei Li, Zhoufeng Liu, Jiangtao Xi, Aihua Zhang Jan 2020

Fusing Multilevel Deep Features For Fabric Defect Detection Based Ntv-Rpca, Yan Dong, Junpu Wang, Chunlei Li, Zhoufeng Liu, Jiangtao Xi, Aihua Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

© 2013 IEEE. Fabric defect detection plays an important role in automated inspection and quality control in textile manufacturing. As the fabric images have complex and diverse textures and defects, traditional detection methods show a poor adaptability and low detection accuracy. Robust principal component analysis (RPCA) model that can be used to separate the image into object and background have proven applicable in fabric defect detection. However, how to represent texture feature of the fabric image more effectively is still problematic in this kind of method. In addition, the use of the traditional RPCA may result in low accuracy and …

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Model Predictive Control For A New Magnetic Linked Multilevel Inverter To Integrate Solar Photovoltaic Systems With The Power Grids, A M. Mahfuz-Ur-Rahman, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto Jan 2020

Model Predictive Control For A New Magnetic Linked Multilevel Inverter To Integrate Solar Photovoltaic Systems With The Power Grids, A M. Mahfuz-Ur-Rahman, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto

Faculty of Engineering and Information Sciences - Papers: Part B

The multilevel inverters are becoming increasingly popular for use in the grid integration of wind and photovoltaic (PV) power plants due to their higher voltage handling capability and the better output power quality. There are several types of multilevel inverters that have been proposed in the literature; among them the active neutral point clamp (ANPC) multilevel inverters have been drawing significant attention specially for solving the problems with other multilevel inverters. However, with the increase of number of levels, the ANPC requires more electronic switches and flying capacitors, by which the complexity and the cost increases. In this paper, an …

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Fault-Tolerant Analysis And Design Of Afpmsm With Multi-Disc Type Coreless Open-End Winding, Xiaoguang Wang, Meng Zhao, Lei Tang, Wei Xu, Md Rabiul Islam Jan 2020

Fault-Tolerant Analysis And Design Of Afpmsm With Multi-Disc Type Coreless Open-End Winding, Xiaoguang Wang, Meng Zhao, Lei Tang, Wei Xu, Md Rabiul Islam

Faculty of Engineering and Information Sciences - Papers: Part B

This article presents a multi-disc coreless axial flux permanent magnet synchronous machine (MDC-AFPMSM) with N pole and S pole type series magnetic circuit and open-end winding for high reliability applications, such as small power actuator system. Firstly, the topology and driving modes of MDC-AFPMSM are presented in details. In this article, a multi-objective optimization function is proposed to design the machine with full consideration of various influence factors. The drive performance indexes of four-phase, five-phase and six-phase machines are analyzed and discussed. Furthermore, main parameters of the five-phase MDC-AFPMSM with open-end winding are calculated. In order to reduce the torque …

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A Complete Cross Section Data Set For Electron Scattering By Pyridine: Modelling Electron Transport In The Energy Range 0–100 Ev, Filipe Costa, Ali Traoré-Dubuis, Lidia Álvarez, Ana Lozano, Xueguang Ren, Alexander Dorn, Paulo Limao-Vieira, Francisco Blanco, Juan Oller, Antonio Munoz, Adrián García-Abenza, Jimena Gorfinkiel, Alessandra Souza Barbosa, Marcio H. F. Bettega, Peter Stokes, Ronald White, Darryl Jones, Michael J. Brunger, Gustavo Garcia Jan 2020

A Complete Cross Section Data Set For Electron Scattering By Pyridine: Modelling Electron Transport In The Energy Range 0–100 Ev, Filipe Costa, Ali Traoré-Dubuis, Lidia Álvarez, Ana Lozano, Xueguang Ren, Alexander Dorn, Paulo Limao-Vieira, Francisco Blanco, Juan Oller, Antonio Munoz, Adrián García-Abenza, Jimena Gorfinkiel, Alessandra Souza Barbosa, Marcio H. F. Bettega, Peter Stokes, Ronald White, Darryl Jones, Michael J. Brunger, Gustavo Garcia

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Electron scattering cross sections for pyridine in the energy range 0–100 eV, which we previously measured or calculated, have been critically compiled and complemented here with new measurements of electron energy loss spectra and double differential ionization cross sections. Experimental techniques employed in this study include a linear transmission apparatus and a reaction microscope system. To fulfill the transport model requirements, theoretical data have been recalculated within our independent atom model with screening corrected additivity rule and interference effects (IAM-SCAR) method for energies above 10 eV. In addition, results from the …

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The Identification Of The Wind Parameters Based On The Interactive Multi-Models, Lihua Zhu, Zhiqiang Wu, Lei Wang, Yu Wang Jan 2020

The Identification Of The Wind Parameters Based On The Interactive Multi-Models, Lihua Zhu, Zhiqiang Wu, Lei Wang, Yu Wang

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 Tech Science Press. All rights reserved. The wind as a natural phenomenon would cause the derivation of the pesticide drops during the operation of agricultural unmanned aerial vehicles (UAV). In particular, the changeable wind makes it difficult for the precision agriculture. For accurate spraying of pesticide, it is necessary to estimate the real-time wind parameters to provide the correction reference for the UAV path. Most estimation algorithms are model based, and as such, serious errors can arise when the models fail to properly fit the physical wind motions. To address this problem, a robust estimation model is proposed …

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A High Gain, Noise Cancelling 2515-4900 Mhz Cmos Lna For China Mobile 5g Communication Application, Xiaorong Zhao, Weili Cheng, Hongjin Zhu, Chunpeng Ge, Gengyuan Zhou, Zhongjun Fu Jan 2020

A High Gain, Noise Cancelling 2515-4900 Mhz Cmos Lna For China Mobile 5g Communication Application, Xiaorong Zhao, Weili Cheng, Hongjin Zhu, Chunpeng Ge, Gengyuan Zhou, Zhongjun Fu

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 Tech Science Press. All rights reserved. With the development of the times, people's requirements for communication technology are becoming higher and higher. 4G communication technology has been unable to meet development needs, and 5G communication technology has emerged as the times require. This article proposes the design of a low-noise amplifier (LNA) that will be used in the 5G band of China Mobile Communications. A low noise amplifier for mobile 5G communication is designed based on Taiwan Semiconductor Manufacturing Company (TSMC) 0.13 μm Radio Frequency (RF) Complementary Metal Oxide Semiconductor (CMOS) process. The LNA employs self-cascode devices in …

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Short Principal Ideal Problem In Multicubic Fields, Andrea Lesavourey, Thomas Plantard, Willy Susilo Jan 2020

Short Principal Ideal Problem In Multicubic Fields, Andrea Lesavourey, Thomas Plantard, Willy Susilo

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 A. Lesavourey et al., published by De Gruyter 2020. One family of candidates to build a post-quantum cryptosystem upon relies on euclidean lattices. In order to make such cryptosystems more efficient, one can consider special lattices with an additional algebraic structure such as ideal lattices. Ideal lattices can be seen as ideals in a number field. However recent progress in both quantum and classical computing showed that such cryptosystems can be cryptanalysed efficiently over some number fields. It is therefore important to study the security of such cryptosystems for other number fields in order to have a better …

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Puncturable Encryption: A Generic Construction From Delegatable Fully Key-Homomorphic Encryption, Willy Susilo, Dung Hoang Duong, Quoc Huy Le, Josef Pieprzyk Jan 2020

Puncturable Encryption: A Generic Construction From Delegatable Fully Key-Homomorphic Encryption, Willy Susilo, Dung Hoang Duong, Quoc Huy Le, Josef Pieprzyk

Faculty of Engineering and Information Sciences - Papers: Part B

© Springer Nature Switzerland AG 2020. Puncturable encryption (PE), proposed by Green and Miers at IEEE S&P 2015, is a kind of public key encryption that allows recipients to revoke individual messages by repeatedly updating decryption keys without communicating with senders. PE is an essential tool for constructing many interesting applications, such as asynchronous messaging systems, forward-secret zero round-trip time protocols, public-key watermarking schemes and forward-secret proxy re-encryptions. This paper revisits PEs from the observation that the puncturing property can be implemented as efficiently computable functions. From this view, we propose a generic PE construction from the fully key-homomorphic encryption, …

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Periodic Lattice Porous Structure Produced By Selective Laser Melting: Process, Experiment And Numerical Simulation Analysis, Jianrui Zhang, Min Chi, Bo Qian, Zhijun Qiu Jan 2020

Periodic Lattice Porous Structure Produced By Selective Laser Melting: Process, Experiment And Numerical Simulation Analysis, Jianrui Zhang, Min Chi, Bo Qian, Zhijun Qiu

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 Tech Science Press. All rights reserved. To accurately perform the coupled simulation of temperature field and stress field of complex parts and porous structures under the optimal manufacturing process parameters, three kinds of porous structures with different complexity were designed in this paper. Firstly, ANSYS additive software was used to conduct the stress/deformation simulation of the whole structure under different scanning strategies. Secondly, the optimal scanning strategy for different porous structures was determined, then the experimental preparation was performed, and mechanical properties of compression were tested and studied. The results show that the elastic modulus and yield strength …

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Increase In Volumetric Electrical Power Density Of A Linear Generator By Winding Optimization For Wave Energy Extraction, Selim Molla, Omar Farrok, Abidur Rahman, Md Samiul Bashir, Md Rabiul Islam, Abbas Z. Zouzani, M. A Parvez Mahmud Jan 2020

Increase In Volumetric Electrical Power Density Of A Linear Generator By Winding Optimization For Wave Energy Extraction, Selim Molla, Omar Farrok, Abidur Rahman, Md Samiul Bashir, Md Rabiul Islam, Abbas Z. Zouzani, M. A Parvez Mahmud

Faculty of Engineering and Information Sciences - Papers: Part B

In this article, a method of winding optimization of the linear generator is proposed to increase the electrical power generation from the oceanic wave. A linear generator is designed in the ANSYS/Maxwell environment to analyze the proposed winding optimization method. The electrical and magnetic properties of the generator are extensively analyzed. The cross-sectional area and the number of turns of the copper conductor are optimized to maximize the output power. Load characteristics are also considered for different conductor sizes and turn numbers to determine a suitable operating point. A cooling system is also incorporated in the optimized linear generator to …

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Hydrological Drought In Dongting Lake Area (China) After The Running Of Three Gorges Dam And A Possible Solution, Yizhuang Liu, Shu-Qing Yang, Changbo Jiang, Yuannan Long, Bin Deng, Shixiong Yan Jan 2020

Hydrological Drought In Dongting Lake Area (China) After The Running Of Three Gorges Dam And A Possible Solution, Yizhuang Liu, Shu-Qing Yang, Changbo Jiang, Yuannan Long, Bin Deng, Shixiong Yan

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Dongting Lake is located at the downstream of Three Gorges Dam (TGD) and the hydrological drought is intensified after the impoundment of TGD as the dry period has been extended from 123 days/year before the operation of TGD (1981–2002) to 141 days/year (2003–2016) on average. Particularly, the Dongting Lake’s water shortage becomes very severe. To solve the problem caused by upstream dams, an innovative flood control scheme (IFCS) was introduced, and its feasibility of application in Dongting Lake is studied using the hydrodynamic module of Mike 21. The results show the …

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Role Of Tio2 Phase Composition Tuned By Lioh On The Electrochemical Performance Of Dual-Phase Li4ti5o12-Tio2 Microrod As An Anode For Lithium-Ion Battery, Lukman Noerochim, Wahyu Caesarendra, Abdulloh Habib, - Widyastuti, - Suwarno, Yatim Nimah, Achmad Subhan, Bambang Prihandoko, Buyung Kosasih Jan 2020

Role Of Tio2 Phase Composition Tuned By Lioh On The Electrochemical Performance Of Dual-Phase Li4ti5o12-Tio2 Microrod As An Anode For Lithium-Ion Battery, Lukman Noerochim, Wahyu Caesarendra, Abdulloh Habib, - Widyastuti, - Suwarno, Yatim Nimah, Achmad Subhan, Bambang Prihandoko, Buyung Kosasih

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. In this study, a dual-phase Li4Ti5O12-TiO2 microrod was successfully prepared using a modified hydrothermal method and calcination process. The stoichiometry of LiOH as precursor was varied at mol ratio of 0.9, 1.1, and 1.3, to obtain the appropriate phase composition between TiO2 and Li4Ti5O12. Results show that TiO2 content has an important role in increasing the specific capacity of electrodes. The refinement of X-ray diffraction patterns by Rietveld analysis confirm that increasing the LiOH stoichiometry suppresses the TiO2 phase. In the scanning electron microscopy images, the microrod morphology was formed after …

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Numerical Study On The Fracture Characteristics And Failure Mode Of Hard Coal Under Coupled Static And Dynamic Loads, Lihai Tan, Ting X. Ren, Xiaohan Yang, Xueqiu He Jan 2020

Numerical Study On The Fracture Characteristics And Failure Mode Of Hard Coal Under Coupled Static And Dynamic Loads, Lihai Tan, Ting X. Ren, Xiaohan Yang, Xueqiu He

Faculty of Engineering and Information Sciences - Papers: Part B

© The Authors, published by EDP Sciences, 2020. It has been well accepted by mining researchers that coal tends to undergo abrupt fracture under the coupling effect of dynamic and static loads. Hence, the study of influence of coupled static and dynamic loads on coal failure behaviour is meaningful for the understanding of coal burst. In this paper, PFC modelling of SHPB test is adopted to investigate the fracture mode and energy evolution of Australian hard coal under different combinations of pre-stress levels and impact velocities. Results have shown that high dynamic load will make the fracture mode and energy …

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Impact Of Magnetic Field Regulation In Conjunction With The Volumetric Repainting Technique On The Spot Positions And Beam Range In Pencil Beam Scanning Proton Therapy, Suresh B Rana, Jaafar Bennouna, Alonso Gutierrez, Anatoly B. Rosenfeld Jan 2020

Impact Of Magnetic Field Regulation In Conjunction With The Volumetric Repainting Technique On The Spot Positions And Beam Range In Pencil Beam Scanning Proton Therapy, Suresh B Rana, Jaafar Bennouna, Alonso Gutierrez, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine Purpose: The objective of this study was to evaluate the impact of the magnetic field regulation in conjunction with the volumetric repainting technique on the spot positions and range in pencil beam scanning proton therapy. Methods: “Field regulation” — a feature to reduce the switching time between layers by applying a magnetic field setpoint (instead of a current setpoint) has been implemented on the proton beam delivery system at the Miami Cancer Institute. To investigate the …

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Evaluation Of Gate-Rtion (Gate/Geant4) Monte Carlo Simulation Settings For Proton Pencil Beam Scanning Quality Assurance, Carla Winterhalter, Michael Taylor, David Boersma, Alessio Elia, Susanna Guatelli, Ranald Mackay, Karen Kirkby, Lydia Maigne, Vladimir Ivanchenko, Andreas Resch, David Sarrut, Peter Sitch, Marie Vidal, Loic Grevillot, Adam Aitkenhead Jan 2020

Evaluation Of Gate-Rtion (Gate/Geant4) Monte Carlo Simulation Settings For Proton Pencil Beam Scanning Quality Assurance, Carla Winterhalter, Michael Taylor, David Boersma, Alessio Elia, Susanna Guatelli, Ranald Mackay, Karen Kirkby, Lydia Maigne, Vladimir Ivanchenko, Andreas Resch, David Sarrut, Peter Sitch, Marie Vidal, Loic Grevillot, Adam Aitkenhead

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Authors. Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine. Purpose: Geant4 is a multi-purpose Monte Carlo simulation tool for modeling particle transport in matter. It provides a wide range of settings, which the user may optimize for their specific application. This study investigates GATE/Geant4 parameter settings for proton pencil beam scanning therapy. Methods: GATE8.1/Geant4.10.3.p03 (matching the versions used in GATE-RTion1.0) simulations were performed with a set of prebuilt Geant4 physics lists (QGSP_BIC, QGSP_BIC_EMY, QGSP_BIC_EMZ, QGSP_BIC_HP_EMZ), using 0.1mm-10mm as production cuts on secondary particles (electrons, photons, positrons) and varying the …

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Static And Dynamic Testing Of Tendons, Naj Aziz, Saman Khaleghparast, Sina Anzanpour, Alex M. Remennikov, Ali Mirzaghorbanali Jan 2020

Static And Dynamic Testing Of Tendons, Naj Aziz, Saman Khaleghparast, Sina Anzanpour, Alex M. Remennikov, Ali Mirzaghorbanali

Faculty of Engineering and Information Sciences - Papers: Part B

© The Authors, published by EDP Sciences, 2020. Underground support system using tendons has been one of the significant achievements in Civil and Mining engineering endeavours in facing challenges of ground control. However, shear failure of rock bolts is still one of the least monitored phenomenon in underground excavations with respect to seismic events. The understanding of the performance of rock bolts under dynamic loading condition requires a great deal of research. A series of tests were undertaken utilising a drop hammer mass of 600 Kg from a maximum height of 3.7 m over concrete blocks in the double shear …

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Eco-Friendly Water-Based Nanolubricants For Industrial-Scale Hot Steel Rolling, Hui Wu, Hamidreza Kamali, Mingshuai Huo, Fei Lin, Shuiquan Huang, Han Huang, Sihai Jiao, Zhao Xing, Zhengyi Jiang Jan 2020

Eco-Friendly Water-Based Nanolubricants For Industrial-Scale Hot Steel Rolling, Hui Wu, Hamidreza Kamali, Mingshuai Huo, Fei Lin, Shuiquan Huang, Han Huang, Sihai Jiao, Zhao Xing, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part B

Eco-friendly and low-cost water-based nanolubricants containing rutile TiO2 nanoparticles (NPs) were developed for accelerating their applications in industrial-scale hot steel rolling. The lubrication performance of developed nanolubricants was evaluated in a 2-high Hille 100 experimental rolling mill at a rolling temperature of 850◦ C in comparison to that of pure water. The results indicate that the use of nanolubricant enables one to decrease the rolling force, reduce the surface roughness and the oxide scale thickness, and enhance the surface hardness. In particular, the nanolubricant consisting of 4 wt % TiO2, 10 wt % glycerol, 0.2 wt …

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On Masking And Releasing Smart Meter Data At Micro-Level: The Multiplicative Noise Approach, John Brackenbury, P. Y. O'Shaughnessy, Yan-Xia Lin Jan 2020

On Masking And Releasing Smart Meter Data At Micro-Level: The Multiplicative Noise Approach, John Brackenbury, P. Y. O'Shaughnessy, Yan-Xia Lin

Faculty of Engineering and Information Sciences - Papers: Part B

Smart meter electricity data presents privacy risks when malicious agents gain insights of private information, including residents’ lifestyle and daily habits. When allowing access to record-level data, we apply the multiplicative noise method to mask individual smart meter data, which simultaneously aims to minimise disclosure of a dwelling’s consumption signal to any third party and to enable accurate estimation of the sum of a cluster of households. Three testing criteria are introduced to measure the performance of multiplicative noise masking approach relevant to the smart meter data. We propose a novel ‘Twin Uniform’ noise distribution and derive relevant theoretical results. …

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An Exploration Of Iot Platform Development, Mahdi Fahmidehgholami, Didar Zowghi Jan 2020

An Exploration Of Iot Platform Development, Mahdi Fahmidehgholami, Didar Zowghi

Faculty of Engineering and Information Sciences - Papers: Part B

IoT (Internet of Things) platforms are key enablers for smart city initiatives, targeting the improvement of citizens' quality of life and economic growth. As IoT platforms are dynamic, proactive, and heterogeneous socio-technical artefacts, systematic approaches are required for their development. Limited surveys have exclusively explored how IoT platforms are developed and maintained from the perspective of information system development process lifecycle. In this paper, we present a detailed analysis of 63 approaches. This is accomplished by proposing an evaluation framework as a cornerstone to highlight the characteristics, strengths, and weaknesses of these approaches. The survey results not only provide insights …

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Pricing Variance And Volatility Swaps With Stochastic Volatility, Stochastic Interest Rate And Regime Switching, Sha Lin, Xinjiang He Jan 2020

Pricing Variance And Volatility Swaps With Stochastic Volatility, Stochastic Interest Rate And Regime Switching, Sha Lin, Xinjiang He

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, we propose a two-factor Heston-CIR hybrid model for the pricing of variance and volatility swaps, by introducing the second regime switching factor into the Heston-CIR hybrid model. While this model is closer to reality, taking advantages of the Heston stochastic volatility, CIR stochastic interest rate and regime switching, it has a more complicated structure and thus leads to extra difficulty in finding analytical solutions. Albeit difficult, we have still managed to present analytical pricing formulae for variance and volatility swaps, based on the derived forward characteristic function in a series form. The series solutions are accompanied by …

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Numerical Simulations Of Circular High Strength Concrete-Filled Aluminum Tubular Short Columns Incorporating New Concrete Confinement Model, Vipulkumar I. Patel, Qing Quan Liang, Muhammad N. S Hadi Jan 2020

Numerical Simulations Of Circular High Strength Concrete-Filled Aluminum Tubular Short Columns Incorporating New Concrete Confinement Model, Vipulkumar I. Patel, Qing Quan Liang, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Concrete-filled aluminum tubular (CFAT) columns have the advantages of a lightweight, high resistance to corrosion, good appearance and ease of maintenance over concrete-filled steel tubular (CFST) columns. However, experimental and computational studies on the performance of CFAT columns have rarely been reported. This paper concerns with the fiber-based numerical analysis, structural behavior, and design of circular high strength CFAT stub columns loaded concentrically. A new concrete confinement model for computing the lateral pressures on the concrete core in CFAT circular columns is proposed and implemented in the computational model. The numerical analysis procedure is given for the determination of the …

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Organisational-Level Assessment Of Cloud Computing Adoption: Evidence From The Australian Smes, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Pu Huang, Qiang He, Wu Zhan Jan 2020

Organisational-Level Assessment Of Cloud Computing Adoption: Evidence From The Australian Smes, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Pu Huang, Qiang He, Wu Zhan

Faculty of Engineering and Information Sciences - Papers: Part B

Cloud Computing (CC) is an emerging technology that can potentially revolutionise the application and delivery of IT. There has been little research, however, into the adoption of CC in Small and Medium-Sized Enterprises (SMEs). The indicators show that CC has been adopted very slowly. There is also a significant research gap in the investigation of the adoption of this innovation in SMEs. This article explores how the adoption of CC in Australia is related to technological factors, risk factors, and environmental factors. The study provides useful insights that can be utilised practically by SMEs, policymakers, and cloud vendors.

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Considerations For Assessing Stability Of Wastewater-Based Epidemiology Biomarkers Using Biofilm-Free And Sewer Reactor Tests, Phil Choi, Jiaying Li, Jianfa Gao, Jake O'Brien, Kevin Thomas, Phong Thai, Guangming Jiang, Jochen Mueller Jan 2020

Considerations For Assessing Stability Of Wastewater-Based Epidemiology Biomarkers Using Biofilm-Free And Sewer Reactor Tests, Phil Choi, Jiaying Li, Jianfa Gao, Jake O'Brien, Kevin Thomas, Phong Thai, Guangming Jiang, Jochen Mueller

Faculty of Engineering and Information Sciences - Papers: Part B

2019 Wastewater-based epidemiology is an increasingly popular method for analysing drugs or metabolites excreted by populations. The in-sewer transformation of biomarkers is important but often receives little consideration in published studies. Many studies publish stability under biofilm-free conditions only, which do not represent actual sewer conditions. This study aims to fill a gap in the field by comparing the wastewater stability of 33 licit drug and pharmaceutical biomarkers in biofilm-free (BFF) conditions to stability in sewer biofilm reactors. All but one biomarker was stable under BFF conditions, whereas most transformed in sewer biofilm reactors. Sewer reactor results tended to overestimate …

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Improving Wastewater Management Using Free Nitrous Acid (Fna), Haoran Duan, Shuhong Gao, Xuan Li, Nur Ab Hamid, Guangming Jiang, Min Zheng, Xue Bai, Philip Bond, Xuanyu Lu, Mariella Chislett, Shihu Hu, Liu Ye, Zhiguo Yuan Jan 2020

Improving Wastewater Management Using Free Nitrous Acid (Fna), Haoran Duan, Shuhong Gao, Xuan Li, Nur Ab Hamid, Guangming Jiang, Min Zheng, Xue Bai, Philip Bond, Xuanyu Lu, Mariella Chislett, Shihu Hu, Liu Ye, Zhiguo Yuan

Faculty of Engineering and Information Sciences - Papers: Part B

2019 Elsevier Ltd Free nitrous acid (FNA), the protonated form of nitrite, has historically been an unwanted substance in wastewater systems due to its inhibition on a wide range of microorganisms. However, in recent years, advanced understanding of FNA inhibitory and biocidal effects on microorganisms has led to the development of a series of FNA-based applications that improve wastewater management practices. FNA has been used in sewer systems to control sewer corrosion and odor; in wastewater treatment to achieve carbon and energy efficient nitrogen removal; in sludge management to improve the sludge reduction and energy recovery; in membrane systems to …

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Geogrid-Confined Pervious Geopolymer Concrete Piles With Frp-Pvc-Confined Concrete Core: Analytical Models, Haiqiu Zhang, Muhammad N. S Hadi Jan 2020

Geogrid-Confined Pervious Geopolymer Concrete Piles With Frp-Pvc-Confined Concrete Core: Analytical Models, Haiqiu Zhang, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

2019 Institution of Structural Engineers The geogrid-confined pervious geopolymer concrete pile (GPGCP) with fibre reinforced polymer (FRP)-polyvinyl chloride (PVC)-confined concrete core (FPCC) is a new form of composite piles proposed in a previous study, which consists of a circular geogrid outer tube, a FPCC, and pervious geopolymer concrete (PGC) filled in between. For FPCC, the normal geopolymer concrete (NGC) was used to fill the FRP-PVC tubes. In this study, new analytical models are proposed to simulate the axial compressive behaviour of GPGCPs without and with FPCC. According to the characteristics of the mechanical behaviour of GPGCPs, analytical models are proposed …

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Experimental And Numerical Investigations Of Eccentrically Loaded Rectangular Concrete-Filled Double Steel Tubular Columns, Mizen Ahmed, Qing Quan Liang, Vipulkumar I. Patel, Muhammad N. S Hadi Jan 2020

Experimental And Numerical Investigations Of Eccentrically Loaded Rectangular Concrete-Filled Double Steel Tubular Columns, Mizen Ahmed, Qing Quan Liang, Vipulkumar I. Patel, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Rectangular concrete-filled double steel tubular (CFDST) columns have increasingly been utilized in high-rise buildings to support heavy loads. However, the responses of eccentrically loaded rectangular CFDST short columns have rarely been studied. This paper reports experimental and numerical investigations into the behavior of rectangular thin-walled short CFDST columns composed of a rectangular inner steel tube loaded eccentrically. Tests on rectangular and square CFDST short columns under eccentric loading and axial loading were carried out to examine their responses to various design parameters, including the cross-sectional dimensions, loading eccentricity, and width-to-thickness ratios of the external and internal tubes. The experimental program …

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