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Articles 421 - 450 of 14367
Full-Text Articles in Social and Behavioral Sciences
Design And Optimization Of A Novel Dual-Port Linear Generator For Oceanic Wave Energy Conversion, Omar Farrok, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto, Jianguo Zhu
Design And Optimization Of A Novel Dual-Port Linear Generator For Oceanic Wave Energy Conversion, Omar Farrok, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto, Jianguo Zhu
Faculty of Engineering and Information Sciences - Papers: Part B
All the existing linear generators used for oceanic wave energy conversions are basically a single-port linear electrical generators (SPLEGs). The conventional SPLEG transfers electrical power to the load/grid discontinuously due to its working principle and the intermittent nature of oceanic waves. This paper proposes a new dual-port linear electrical generator (DPLEG) topology, which is capable to transfer electrical power with an adequate voltage even at zero vertical velocity of the oceanic wave. The analysis shows that the efficiency and the performance of the DPLEG depend greatly on the stator tooth design. For this reason, the proposed DPLEG is optimized using …
A Regime Switching Fractional Black-Scholes Model And European Option Pricing, Sha Lin, Xinjiang He
A Regime Switching Fractional Black-Scholes Model And European Option Pricing, Sha Lin, Xinjiang He
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Elsevier B.V. In this paper, we investigate the European option pricing problem under a regime switching FMLS (finite moment log-stable) model. This model is not only able to capture the main characteristics of asset returns, it also incorporates the effect of regime switching being consistent with market observations. However, option prices under this model are governed by a coupled FPDE (fractional partial differential equation) system, and the difficulty in seeking for analytical solution arises from the combination of the coupled system and the spatial-fractional derivative. To deal with this difficulty, we develop a two-step solution procedure; we firstly assume …
A Noise Study Of The Psw Signature Family: Patching Drs With Uniform Distribution, Arnaud Sipasseuth, Thomas Plantard, Willy Susilo
A Noise Study Of The Psw Signature Family: Patching Drs With Uniform Distribution, Arnaud Sipasseuth, Thomas Plantard, Willy Susilo
Faculty of Engineering and Information Sciences - Papers: Part B
At PKC 2008, Plantard et al. published a theoretical framework for a lattice-based signature scheme, namely Plantard-Susilo-Win (PSW). Recently, after ten years, a new signature scheme dubbed the Diagonal Reduction Signature (DRS) scheme was presented in the National Institute of Standards and Technology (NIST) PQC Standardization as a concrete instantiation of the initial work. Unfortunately, the initial submission was challenged by Yu and Ducas using the structure that is present on the secret key noise. In this paper, we are proposing a new method to generate random noise in the DRS scheme to eliminate the aforementioned attack, and all subsequent …
Broken Lines Path Following Algorithm For A Water-Jet Propulsion Usv With Disturbance Uncertainties, Yujiao Zhao, Xin Qi, Atilla Incecik, Yong Ma, Zhixiong Li
Broken Lines Path Following Algorithm For A Water-Jet Propulsion Usv With Disturbance Uncertainties, Yujiao Zhao, Xin Qi, Atilla Incecik, Yong Ma, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Elsevier Ltd To fulfill autonomous navigation of unmanned surface vehicle, it is pivotal to resolve unmanned surface vehicle path following issue. However, the problem that we are concerned with is hindered by unmanned surface vehicle's nonlinearity and the disturbance uncertainties brought by the navigation environment. In this paper, we focus on path following problem for a jet driven underactuated unmanned surface vehicle. The stressed followed paths in practical application are broken lines connected by continuous straight lines rather than smooth lines. By calculating the virtual target on each straight line in following the unmanned surface vehicle dynamically, we propose …
Influence Of O2 On The Erosion-Corrosion Performance Of 3cr Steels In Co2 Containing Environment, Lei Xia, Yan Li, Leilei Ma, Hongmei Zhang, Nan Li, Zhengyi Jiang
Influence Of O2 On The Erosion-Corrosion Performance Of 3cr Steels In Co2 Containing Environment, Lei Xia, Yan Li, Leilei Ma, Hongmei Zhang, Nan Li, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
2020 by the authors. With the introduction of O2 during oil and gas production, the erosion-corrosion rate of tubing steels increases; the objective of this report is to explore the reason for this. Erosion-corrosion experiments were performed in environments of CO2 and CO2-O2, respectively. Macrographs, microstructures, and the compositions of erosion-corrosion scales were investigated using a digital camera, scanning electron microscope (SEM), Kevex-SuperDry energy spectrometer (EDS) and Xray diffraction (XRD). The results show that the erosion-corrosion products are composed of large FeCO3 particles and some amorphous product in the CO2 environment, while they are made up of FeCO3, Fe2O3, Fe3O4, …
Full-Scale Investigation Of Ferrous Dosing In Sewers And A Wastewater Treatment Plant For Multiple Benefits, Jagadeeshkumar Kulandaivelu, Sohan Shrestha, Wakib Khan, Jason Dwyer, Alan Steward, Leo Bell, Paul Mcphee, Peter Smith, Shihu Hu, Zhiguo Yuan, Guangming Jiang
Full-Scale Investigation Of Ferrous Dosing In Sewers And A Wastewater Treatment Plant For Multiple Benefits, Jagadeeshkumar Kulandaivelu, Sohan Shrestha, Wakib Khan, Jason Dwyer, Alan Steward, Leo Bell, Paul Mcphee, Peter Smith, Shihu Hu, Zhiguo Yuan, Guangming Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd This study demonstrates the full scale application of iron dosing in a metropolitan wastewater treatment plant (WWTP) and the upstream sewer system for multiple benefits. Two different dosing locations, i.e., the WWTP inlet works (Trial-1) and upstream sewer network (Trial-2) were tested in this study. Both dosing trials achieved multiple benefits such as sulfide control, phosphate removal and improved sludge dewaterability. During Trial-1, a sulfide reduction of >90% was achieved at high dosing rates (>19 kgFe ML−1) of ferrous chloride in the inlet works and in Trial-2 the in-sewer ferrous dosing had significant gas phase …
Estimation Of Average Ejection Velocity Generated By Rib Burst Under Compression Load, Xiaohan Yang, Ting X. Ren, Lihai Tan
Estimation Of Average Ejection Velocity Generated By Rib Burst Under Compression Load, Xiaohan Yang, Ting X. Ren, Lihai Tan
Faculty of Engineering and Information Sciences - Papers: Part B
The ejection velocity associated with coal burst is an important parameter for support and protection structure design against coal ejection, as the support or protection design rationale is to dissipate or absorb the kinetic energy carried by ejected coal. This paper provides a novel method to estimate the average particle ejection velocity of rib burst based on the energy dissipation and coal fragmentation of coal brittle failure. This research shows that the scale of kinetic energy released by coal burst in underground roadways can reach over 107 J, which can offer ejected coal with an over 26 m/s initial velocity …
A Conductive Polymer Derived N-Doped Carbon Nanofiber Supported Li2s Coating Layer For Li–S Batteries With High Mass Loading, Fang Li, Chang Wu, Jicheng Jiang, Hua-Kun Liu, Jiazhao Wang
A Conductive Polymer Derived N-Doped Carbon Nanofiber Supported Li2s Coating Layer For Li–S Batteries With High Mass Loading, Fang Li, Chang Wu, Jicheng Jiang, Hua-Kun Liu, Jiazhao Wang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier B.V. The commercialization of Li2S as a potential candidate for lithium-sulfur cathode material is hampered due to its low electronic conductivity, the “shuttle effect” and the initial energy barrier. In this work, nanosized Li2S particles coated carbon nanofibers are prepared via a solution-based chemical method. Benefiting from this synthetic method, a uniform Li2S layer can be obtained without any agglomeration. Due to the small size of Li2S particles, a smaller energy barrier is observed in the first charging process, which means it is easier to activate the Li2S with a smaller cut-off voltage. In addition, the carbon …
Martensitic Wear Resistant Steels Alloyed With Titanium, Andrii Kostryzhev, C Killmore, D Yu, Elena V. Pereloma
Martensitic Wear Resistant Steels Alloyed With Titanium, Andrii Kostryzhev, C Killmore, D Yu, Elena V. Pereloma
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Reduction Kinetics Of Oxidized New Zealand Ironsand Pellets In H2 At Temperatures Up To 1443 K, Ao Zhang, Brian J. Monaghan, Raymond Longbottom, Mohammad Nusheh, Chris Bumby
Reduction Kinetics Of Oxidized New Zealand Ironsand Pellets In H2 At Temperatures Up To 1443 K, Ao Zhang, Brian J. Monaghan, Raymond Longbottom, Mohammad Nusheh, Chris Bumby
Faculty of Engineering and Information Sciences - Papers: Part B
2020, The Minerals, Metals & Materials Society and ASM International. Direct reduction of iron ore pellets using hydrogen gas has the potential to significantly reduce CO2 emissions from the ironmaking process. In this work, green pellets of titanomagnetite ironsand from New Zealand were oxidatively sintered to form titanohematite. These sintered pellets were then reduced by H2 gas at temperatures ≥ 1043 K, and a maximum reduction degree of ~ 97 pct was achieved. Fully reduced pellets contained metallic Fe as the main product phase, but several different (Fe, Ti) oxides were also present as minor inclusions. The phase distribution of …
Flow Field Perception Of A Moving Carrier Based On An Artificial Lateral Line System, Guijie Liu, Huanhuan Hao, Tingting Yang, Shuikuan Liu, Mengmeng Wang, Atilla Incecik, Zhixiong Li
Flow Field Perception Of A Moving Carrier Based On An Artificial Lateral Line System, Guijie Liu, Huanhuan Hao, Tingting Yang, Shuikuan Liu, Mengmeng Wang, Atilla Incecik, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
2020 by the authors. Licensee MDPI, Basel, Switzerland. At present, autonomous underwater vehicles (AUVs) cannot perceive local environments in complex marine environments, where fish can obtain hydrodynamic information about the surrounding environment through a lateral line. Inspired by this biological function, an artificial lateral line system (ALLS) was built on a moving bionic carrier using the pressure sensor in this paper. When the carrier operated with different speeds in the flow field, the pressure distribution characteristics surrounding the carrier were analyzed by numerical simulation, where the effect of the flow angle between the fluid velocity direction and the carrier navigation …
Ultrathin Few-Layer Gep Nanosheets Via Lithiation-Assisted Chemical Exfoliation And Their Application In Sodium Storage, Fuhua Yang, Jian Hong, Junnan Hao, Shilin Zhang, Gemeng Liang, Jun Long, Yuqing Liu, Nana Liu, Wei Kong Pang, Jun Chen, Zaiping Guo
Ultrathin Few-Layer Gep Nanosheets Via Lithiation-Assisted Chemical Exfoliation And Their Application In Sodium Storage, Fuhua Yang, Jian Hong, Junnan Hao, Shilin Zhang, Gemeng Liang, Jun Long, Yuqing Liu, Nana Liu, Wei Kong Pang, Jun Chen, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part B
2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Ultrathin few-layer materials have attracted intensive research attention because of their distinctive and unique properties. Few-layer GeP (FL-GP) is potentially interesting for application in electronics and optoelectronics because of its appropriate band gap and good stability under ambient conditions. Nevertheless, it is a challenge to achieve ultrathin few-layer or single layer GeP from exfoliation of bulk crystals. Here, a lithiation-assisted chemical exfoliation technique is employed to achieve FL-GP, in which the interlayer spacing can be efficiently enlarged after a preliminary lithium ion intercalation, allowing the bulk crystal to be readily exfoliated in …
Social Vulnerability To Natural Hazards In Wollongong: Comparing Strength-Based And Traditional Methods, Robert Ighodaro Ogie, Biswajeet Pradhan
Social Vulnerability To Natural Hazards In Wollongong: Comparing Strength-Based And Traditional Methods, Robert Ighodaro Ogie, Biswajeet Pradhan
Faculty of Engineering and Information Sciences - Papers: Part B
Social vulnerability is a widely recognised way of assessing the sensitivity of a population to natural hazards and its ability to respond to and recover from them. In the traditional approach to computing social vulnerability, the emphasis is mainly on the weaknesses only (e.g. old age, low income, language barriers). This study presents a strength-based social vulnerability index that identifies the strengths that communities have that help minimise disaster risk exposure. The strength-based social vulnerability index method is compared with the traditional approach using various statistical procedures like the one-sample T-test and the Wilcoxon signed rank test. This is performed …
Wet-Spun Trojan Horse Cell Constructs For Engineering Muscle, Anita Quigley, Rhys Cornock, Tharun Mysore, Javad Foroughi, Magdalena Kita, Joselito Razal, Jeremy Micah Crook, Simon Moulton, Gordon G. Wallace, Robert Kapsa
Wet-Spun Trojan Horse Cell Constructs For Engineering Muscle, Anita Quigley, Rhys Cornock, Tharun Mysore, Javad Foroughi, Magdalena Kita, Joselito Razal, Jeremy Micah Crook, Simon Moulton, Gordon G. Wallace, Robert Kapsa
Faculty of Engineering and Information Sciences - Papers: Part B
© Copyright © 2020 Quigley, Cornock, Mysore, Foroughi, Kita, Razal, Crook, Moulton, Wallace and Kapsa. Engineering of 3D regenerative skeletal muscle tissue constructs (skMTCs) using hydrogels containing muscle precursor cells (MPCs) is of potential benefit for repairing Volumetric Muscle Loss (VML) arising from trauma (e.g., road/industrial accident, war injury) or for restoration of functional muscle mass in disease (e.g., Muscular Dystrophy, muscle atrophy). Additive Biofabrication (AdBiofab) technologies make possible fabrication of 3D regenerative skMTCs that can be tailored to specific delivery requirements of VML or functional muscle restoration. Whilst 3D printing is useful for printing constructs of many tissue types, …
A Judicious Decision-Making Approach For Power Dispatch In Smart Grid Using A Multiobjective Evolutionary Algorithm Based On Decomposition, Chixin Xiao, Danny Sutanto, Kashem M. Muttaqi, Minjie Zhang
A Judicious Decision-Making Approach For Power Dispatch In Smart Grid Using A Multiobjective Evolutionary Algorithm Based On Decomposition, Chixin Xiao, Danny Sutanto, Kashem M. Muttaqi, Minjie Zhang
Faculty of Engineering and Information Sciences - Papers: Part B
Multiobjective evolutionary algorithm based on decomposition (MOEA/D) is an efficient mathematical strategy for solving multiobjective optimization problems. However, the MOEA/D algorithm has not yet been widely used on the multiobjective optimal power flow (MOPF) problems, which consider several conflicting objectives with varying tradeoff levels. This article proposes a novel differential evolution (DE) strategy based on the MOEA/D framework to quickly determine a set of optimal solutions of MOPFs, in the objective space formed from the different objectives, such as the most optimal economic dispatch, the least environmental emission objectives, and the minimum transmission losses, while considering the power system constraints. …
A Magnetic-Linked Multilevel Active Neutral Point Clamped Converter With An Advanced Switching Technique For Grid Integration Of Solar Photovoltaic Systems, A M. Mahfuz-Ur-Rahman, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto
A Magnetic-Linked Multilevel Active Neutral Point Clamped Converter With An Advanced Switching Technique For Grid Integration Of Solar Photovoltaic Systems, A M. Mahfuz-Ur-Rahman, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto
Faculty of Engineering and Information Sciences - Papers: Part B
© 1972-2012 IEEE. Nowadays, the grid-connected solar photovoltaic (PV) system has been drawing significant attention due to the rapid development and the decreasing cost of solar panels. The efficiency and reliability of a grid-connected PV system mainly depend on the power conversion system and the control strategy. This article presents a new magnetic-linked 7-level active neutral point clamped (ANPC) converter, which requires less number of flying capacitors and also reduces the control complexity of the grid-connected PV system. The proposed converter topology utilizes the input dc bus voltage better than the traditional ANPC multilevel converter and also provides galvanic isolation …
On The Energy Efficiency Of Massive Mimo Systems With Low-Resolution Adcs And Lattice Reduction Aided Detectors, Zhitao Xiao, Jincan Zhao, Tianle Liu, Lei Geng, Fang Zhang, Jun Tong
On The Energy Efficiency Of Massive Mimo Systems With Low-Resolution Adcs And Lattice Reduction Aided Detectors, Zhitao Xiao, Jincan Zhao, Tianle Liu, Lei Geng, Fang Zhang, Jun Tong
Faculty of Engineering and Information Sciences - Papers: Part B
As an effective technology for boosting the performance of wireless communications, massive multiple-input multiple-output (MIMO) systems based on symmetric antenna arrays have been extensively studied. Using low-resolution analog-to-digital converters (ADCs) at the receiver can greatly reduce hardware costs and circuit complexity to further improve the energy efficiency (EE) of the system. There are significant research on the design of MIMO detectors but there is limited study on their performance in terms of EE. This paper studies the effect of signal detection on the EE in practical systems, and proposes to apply several signal detectors based on lattice reduction successive interference …
An Integrated Energy Management Approach For The Economic Operation Of Industrial Microgrids Under Uncertainty Of Renewable Energy, Ghulam Mohy-Ud-Din, Dao Hoang Vu, Kashem M. Muttaqi, Danny Sutanto
An Integrated Energy Management Approach For The Economic Operation Of Industrial Microgrids Under Uncertainty Of Renewable Energy, Ghulam Mohy-Ud-Din, Dao Hoang Vu, Kashem M. Muttaqi, Danny Sutanto
Faculty of Engineering and Information Sciences - Papers: Part B
© 1972-2012 IEEE. Many modern industries are equipped with onsite renewable generation and are normally connected to the grid. A battery energy storage system (BESS) can complement the intermittency of the available onsite renewable generation. The combination of the BESS and the renewable generation can operate as a microgrid. If the microgrid is properly sized and managed, it is possible to reduce the electricity bill to have a huge saving in the electricity cost. This article proposes an energy management system for such an industrial microgrids. The decisions to charge and discharge the BESS in the proposed energy management are …
Upright Radiation Therapy—A Historical Reflection And Opportunities For Future Applications, Sulman Rahim, James Korte, Nicholas G. Hardcastle, Sarah Hegarty, Tomas Kron, Sarah Everitt
Upright Radiation Therapy—A Historical Reflection And Opportunities For Future Applications, Sulman Rahim, James Korte, Nicholas G. Hardcastle, Sarah Hegarty, Tomas Kron, Sarah Everitt
Faculty of Engineering and Information Sciences - Papers: Part B
Since the early days of megavoltage Radiation Therapy (RT), the potential of delivering treatment to a sub group of patients in an upright position has been recognized. Compared to lying horizontally, treating patients in an upright position offers potential benefits in terms of patient comfort especially for patients experiencing dyspnoea and saliva accumulation when lying down. Dosimetric benefits can also be gained from changes in the volume and location of lungs and heart in an upright position, which are potentially advantageous for clinical situations including Hodgkin's disease, lung and breast malignancies. Since the 1950's, upright stabilization mechanisms have ranged from …
Attribute-Based Equality Test Over Encrypted Data Without Random Oracles, Yuanhao Wang, Yuzhao Cui, Qiong Huang, Hongbo Li, Jianye Huang, Guomin Yang
Attribute-Based Equality Test Over Encrypted Data Without Random Oracles, Yuanhao Wang, Yuzhao Cui, Qiong Huang, Hongbo Li, Jianye Huang, Guomin Yang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2013 IEEE. Sensitive data would be encrypted before uploading to the cloud due to the privacy issue. However, how to compare the encrypted data efficiently becomes a problem. Public Key Encryption with Equality Test (PKEET) provides an efficient way to check whether two ciphertexts (of possibly different users) contain the same message without decryption. As an enhanced variant, Attribute-based Encryption with Equality Test (ABEET) provides a flexible mechanism of authorization on the equality test. Most of the existing ABEET schemes are only proved to be secure in the random oracle model. Their security, however, would not be guaranteed if …
Mechanistic-Empirical Permanent Deformation Models: Laboratory Testing, Modelling And Ranking, Ana Ramos, Antonio Gomes, Buddhima Indraratna, Ngoc Trung Ngo, Rui Calcada, Pedro Costa
Mechanistic-Empirical Permanent Deformation Models: Laboratory Testing, Modelling And Ranking, Ana Ramos, Antonio Gomes, Buddhima Indraratna, Ngoc Trung Ngo, Rui Calcada, Pedro Costa
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd Geomaterials exhibit elastoplastic behaviour during dynamic and repeated loading conditions. These loads are induced by the passage of a train or vehicle which then generates recoverable (resilient) deformation and/or permanent (plastic) deformation. Modelling this behaviour is still a challenge for geotechnical engineers as it implies the understanding of the complex deformation mechanism and application of advanced constitutive models. This paper reviews on the major causes of permanent deformation and the factors that influence the long-term performance of materials. It will also present the fundamental concepts of permanent deformation as well as the models and approaches used …
Numerical Modelling Of Track Behavior Capturing Particle Breakage Under Dynamic Loading, Ngoc Trung Ngo, Buddhima Indraratna
Numerical Modelling Of Track Behavior Capturing Particle Breakage Under Dynamic Loading, Ngoc Trung Ngo, Buddhima Indraratna
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Advancement Of Rail Ballast Testing Methodologies And Design Implications, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn, Fernanda Ferreira
Advancement Of Rail Ballast Testing Methodologies And Design Implications, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn, Fernanda Ferreira
Faculty of Engineering and Information Sciences - Papers: Part B
Given the limited capacity of available railway tracks in Australia to sustain increasingly faster and heavier trains, the development of innovative and sustainable ballasted tracks is essential for Australian transport infrastructure. Upon repeated train loading, ballast aggregates become degraded and fouled owing to the intrusion of external fines either from the subbase or surface, which decreases track drainage potentially leading to track instability. This paper reviews some advancements in testing methodologies and design implications of ballasted tracks stabilized with artificial inclusions, including geocomposites, energy absorbing rubber mats and end-of-life tires. Measured test data shows that the use of these waste …
Effect Of Rock Brittleness On Propagation Of Hydraulic Fractures In Shale Reservoirs With Bedding-Planes, Zhaohui Chong, Qiangling Yao, Xuehua Li, Liu Zhu, Chuanjin Tang
Effect Of Rock Brittleness On Propagation Of Hydraulic Fractures In Shale Reservoirs With Bedding-Planes, Zhaohui Chong, Qiangling Yao, Xuehua Li, Liu Zhu, Chuanjin Tang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 The Authors. Energy Science & Engineering published by the Society of Chemical Industry and John Wiley & Sons Ltd. Hydraulic fracturing forms complex hydraulic fracture networks (HFNs) in shale reservoirs and significantly improves the permeability of shale reservoirs. Although rock brittleness is a major factor in determining whether a shale reservoir can be fractured, the relationship between HFNs and rock brittleness remains unclear. To investigate this relationship in a shale reservoir with bedding planes, this paper presents a series of hydraulic fracturing simulations based on a hydromechanically coupled discrete element model. In addition, we analyzed the sensitivity of …
Biogeochemical Clogging Of Permeable Reactive Barriers In Acid-Sulfate Soil Floodplain, Buddhima Indraratna, Subhani Medawela, R Rowe, Ngamta Thamwattana, Ana Heitor
Biogeochemical Clogging Of Permeable Reactive Barriers In Acid-Sulfate Soil Floodplain, Buddhima Indraratna, Subhani Medawela, R Rowe, Ngamta Thamwattana, Ana Heitor
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 American Society of Civil Engineers. Column experiments that investigate the use of calcitic limestone as a potential material for permeable reactive barriers (PRBs), as well as its clogging behavior, are conducted under conditions that involve continuous acidic flow containing Al, Fe, and acidophilic bacteria. Results show that nonhomogenous biogeochemical clogging occurred toward the outlet, resulting in a 45% reduction of hydraulic conductivity at the inlet and 10% reduction at the outlet after the bicarbonate buffering period. A mathematical model developed to capture the reductions in longevity is presented. The model, which considers the effects of time-varying porosity, hydraulic …
Flexural Fatigue Behaviour Of Geogrid Reinforced Concrete Pavements, Muhammad N. S Hadi, Abbas Sahib Abd-Ali Al-Hedad
Flexural Fatigue Behaviour Of Geogrid Reinforced Concrete Pavements, Muhammad N. S Hadi, Abbas Sahib Abd-Ali Al-Hedad
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd This paper investigates the effect of geogrid reinforcement on the flexural fatigue behaviour of concrete pavements subjected to cyclic loads. Fifteen-notched concrete beam specimens with the dimensions of 150 × 150 × 550 mm were either unreinforced, reinforced with a single or a double geogrid layer. The geogrid was placed at a depth of 55 mm from the bottom of the specimen. The specimens were tested under cyclic four-point bending loads at a frequency of 7 Hz. Test results illustrate that significant improvement was achieved in the flexural strength and fracture energy of the concrete specimens …
Transport Is Letting Australia Down In The Race To Cut Emissions, Philip G. Laird
Transport Is Letting Australia Down In The Race To Cut Emissions, Philip G. Laird
Faculty of Engineering and Information Sciences - Papers: Part B
At a time Australia is meant to be reducing its greenhouse emissions, the upward trend in transport sector emissions continues. The latest National Greenhouse Gas Inventory report released last week shows the transport sector emitted 102 million tonnes (Mt) of carbon dioxide equivalent (MtCO₂-e) in the 12 months to September 2019. This was 18.9% of Australia's emissions.
Study Of Wire Deformation Characterization And Size Effects During The Micro-Flat-Rolling Process, Haibo Xie, Ken-Ichi Manabe, Zhengyi Jiang
Study Of Wire Deformation Characterization And Size Effects During The Micro-Flat-Rolling Process, Haibo Xie, Ken-Ichi Manabe, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. A comprehensive research on the flat rolling deformation characterization of microwire has been conducted systematically through finite element simulation and testified by the results from the experimental analysis. The obtained results are compared in terms of lateral spread, geometrical characteristic, contact area width and surface roughness considering the effects of pass reduction and initial wire diameter. The size effect has been identified and surface layer modeling has been set up based on surface grain share and grain size distribution. The numerical method combined with varied flow stress has been verified by …
Electrical Power Generation From The Oceanic Wave For Sustainable Advancement In Renewable Energy Technologies, Omar Farrok, Koushik Ahmed, Abdirazak Tahlil, Mohamud Farah, Mahbubur Kiran, Md Rabiul Islam
Electrical Power Generation From The Oceanic Wave For Sustainable Advancement In Renewable Energy Technologies, Omar Farrok, Koushik Ahmed, Abdirazak Tahlil, Mohamud Farah, Mahbubur Kiran, Md Rabiul Islam
Faculty of Engineering and Information Sciences - Papers: Part B
Recently, electrical power generation from oceanic waves is becoming very popular, as it is prospective, predictable, and highly available compared to other conventional renewable energy resources. In this paper, various types of nearshore, onshore, and offshore wave energy devices, including their construction and working principle, are explained explicitly. They include point absorber, overtopping devices, oscillating water column, attenuators, oscillating wave surge converters, submerged pressure differential, rotating mass, and bulge wave converter devices. The encounters and obstacles of electrical power generation from the oceanic wave are discussed in detail. The electrical power generation methods of the generators involved in wave energy …
Dpsa: Dense Pixelwise Spatial Attention Network For Hatching Egg Fertility Detection, Lei Geng, Yunyun Xu, Zhitao Xiao, Jun Tong
Dpsa: Dense Pixelwise Spatial Attention Network For Hatching Egg Fertility Detection, Lei Geng, Yunyun Xu, Zhitao Xiao, Jun Tong
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 SPIE and IS & T. Deep convolutional neural networks show a good prospect in the fertility detection and classification of specific pathogen-free hatching egg embryos in the production of avian influenza vaccine, and our previous work has mainly investigated three factors of networks to push performance: depth, width, and cardinality. However, an important problem that feeble embryos with weak blood vessels interfering with the classification of resilient fertile ones remains. Inspired by fine-grained classification, we introduce the attention mechanism into our model by proposing a dense pixelwise spatial attention module combined with the existing channel attention through depthwise …