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Articles 1 - 13 of 13
Full-Text Articles in Engineering
Effects Of Tsunami On Coastal Ground Conditions And Appropriate Measures For Rail Track Rehabilitation, Buddhima Indraratna, Mohammad Hadi Khabbaz, A. Puswewala, W. Bandara
Effects Of Tsunami On Coastal Ground Conditions And Appropriate Measures For Rail Track Rehabilitation, Buddhima Indraratna, Mohammad Hadi Khabbaz, A. Puswewala, W. Bandara
Buddhima Indraratna
On boxing day, 26 December 2004, the largest earthquake for more than 4 decades, (magnitude 9.0) occurred between the Australian and Eurasian plates in the Indian Ocean (along the overly stressed Sunda trench) to the west of Aceh Province (Northern Sumatra). The quake triggered a series of waves that increased in height rapidly close to the shore (tsunami) spreading thousands of kilometers across the Bay of Bengal. In the Eastern and Southern coastal belt of Sri Lanka, the floodwaters reached almost 1 km inland, causing extensive damage to infrastructure and fatalities of unprecedented proportions. Widespread destruction included several kilometres of …
Contextual Effects In Modeling For Small Domain Estimation, Mohammad-Reza Namazi-Rad, David G. Steel
Contextual Effects In Modeling For Small Domain Estimation, Mohammad-Reza Namazi-Rad, David G. Steel
SMART Infrastructure Facility - Papers
Many different Small Area Estimation (SAE) methods have been proposed to overcome the challenge of findingreliable estimates for small domains. Often, the required data for various research purposes are available at differentlevels of aggregation. Based on the available data, individual-level or aggregated-level models are used in SAE.However, parameter estimates obtained from individual and aggregated level analysis may be different, in practice.This may happen due to some substantial contextual or area-level effects in the covariates which may be misspecifiedin individual-level analysis. If small area models are going to be interpretable in practice, possible contextualeffects should be included. Ignoring these effects leads …
Effects Of Salinity And Sand Content On Liquid Limit And Hydraulic Conductivity, Behzad Fatahi, Mohammad Hadi Khabbaz, Sudip Basack
Effects Of Salinity And Sand Content On Liquid Limit And Hydraulic Conductivity, Behzad Fatahi, Mohammad Hadi Khabbaz, Sudip Basack
Faculty of Engineering and Information Sciences - Papers: Part A
Soil conditions of construction sites have become worse than ever due to the overpopulation in the metropolitan areas throughout the world. Likewise, the prevention of environmental risks due to individual activities is one of the most important subjects in the geo-environmental problems. Saline soils may induce several problems in geotechnical engineering projects such as infrastructure embankments, road construction and clay liners. Effect of the various concentrations of sodium chloride (NaCl) on several different soils including bentonite, kaolinite and fine sand mixtures has been evaluated. In addition, influence of salinity and the period of submergence on the hydraulic conductivity of soil …
Effects Of A Brief Cognitive Intervention Aimed At Communicating The Negative Reinforcement Explanation For Smoking On Relevant Cognitions And Urges To Smoke, Mairtin S. Mcdermott, Theresa M. Marteau, Peter Hajek
Effects Of A Brief Cognitive Intervention Aimed At Communicating The Negative Reinforcement Explanation For Smoking On Relevant Cognitions And Urges To Smoke, Mairtin S. Mcdermott, Theresa M. Marteau, Peter Hajek
Faculty of Engineering and Information Sciences - Papers: Part A
Introduction:The aim of the current study was to assess the impact of an intervention aimed at communicating the negative reinforcement explanation for smoking, a set of ideas derived from popular self-help books, upon participants' cognitions and urges to smoke. Methods: Smokers (n = 205) undergoing standard stop-smoking treatment were randomised to receive either the experimental intervention, a brief intervention aimed at communicating the explanation or a control intervention, a video on the health risks of smoking. Outcomes were participants' acceptance of the negative reinforcement explanation for smoking, positive outcome expectations for smoking, self-efficacy and urges to smoke reported at one …
Effects Of Cu And Fe Doping On Raman Spectra And On The Structural And Magnetic Properties Of Ermno3, Peng Liu, Zhenxiang Cheng, Yi Du, Xiaolin Wang
Effects Of Cu And Fe Doping On Raman Spectra And On The Structural And Magnetic Properties Of Ermno3, Peng Liu, Zhenxiang Cheng, Yi Du, Xiaolin Wang
Faculty of Engineering - Papers (Archive)
Single phase ErMexMn1−xO3 (Me = Cu, Fe; 0 ≤ x ≤ 0.1) samples were synthesized by the solid state reaction method. The differences between the doping effects on the Raman spectra and on the structural, magnetic, and thermal properties of the two systems have been systematically investigated. In the ErCuxMn1−xO3 system, lattice parameter a increases with doping, while lattice parameter c decreases. It is more complicated in the ErFexMn1−xO3 system, where lattice parameter a decreases with doping, while lattice parameter c is enhanced after an …
Network Neighbor Effects On Customer Churn In Cell Phone Networks, Pavel N. Krivitsky, Pedro Ferreira, Rahul Telang
Network Neighbor Effects On Customer Churn In Cell Phone Networks, Pavel N. Krivitsky, Pedro Ferreira, Rahul Telang
Faculty of Engineering and Information Sciences - Papers: Part A
No abstract provided.
Effects Of Polypyrrole On The Performance Of Nickel Oxide Anode Materials For Rechargeable Lithium-Ion Batteries, Nurul H. Idris, Jiazhao Wang, Shulei Chou, Chao Zhong, Md Mokhlesur Rahman, Hua-Kun Liu
Effects Of Polypyrrole On The Performance Of Nickel Oxide Anode Materials For Rechargeable Lithium-Ion Batteries, Nurul H. Idris, Jiazhao Wang, Shulei Chou, Chao Zhong, Md Mokhlesur Rahman, Hua-Kun Liu
Faculty of Engineering - Papers (Archive)
Nickel oxide–polypyrrole (NiO–PPy) composites for lithium-ion batteries were prepared by a chemical polymerization method with sodium p-toluenesulfonate as the dopant, Triton-X as the surfactant, and FeCl3 as the oxidant. The new composite material was characterized by Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy, and field-emission scanning electron microscopy. Nanosize conducting PPy particles with a cauliflower-like morphology were uniformly coated onto the surface of the NiO powder. The electrochemical results were improved for the NiO–PPy composite compared with the pristine NiO. After 30 cycles, the capacities of the NiO and the NiO–PPy composite were about 119 and 436 mAh·g …
Coupling Effects Of Feed Solution Ph And Ionic Strength On The Rejection Of Boron By Nf/Ro Membranes, Kha Tu, Long Nghiem, Allan Chivas
Coupling Effects Of Feed Solution Ph And Ionic Strength On The Rejection Of Boron By Nf/Ro Membranes, Kha Tu, Long Nghiem, Allan Chivas
Faculty of Engineering - Papers (Archive)
The coupling effects of solution pH and ionic strength on boron rejection by nanofiltration (NF) and reverse osmosis (RO) membranes were investigated. Two NF membranes (namely NF270 and NF90) and three RO membranes (namely BW30, SW30 and UTC80) were used to provide a full spectrum of NF/RO membranes. The rejection of boron by all five membranes was pH-dependent. The dependency of boron rejection on the feed solution pH became much more substantial as the nominal salt (sodium or calcium) rejection value of the membrane decreased. At pH 11, boron rejections by the NF90 and the NF270 membranes were only 10% …
Investigating The Effects Of Pounding For Inelastic Base Isolated Adjacent Buildings Under Earthquake Excitations, Mehmet Uz, Muhammad N. S Hadi
Investigating The Effects Of Pounding For Inelastic Base Isolated Adjacent Buildings Under Earthquake Excitations, Mehmet Uz, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
In this study, an investigation is carried out to analyse the earthquake induced pounding be-tween two insufficiently separated base isolated buildings considering the inelastic behaviour of the struc-tures’ response. The buildings are modelled as a four-story and a three-story system to simulate the structural behaviour. The resulting systems of second order constant coefficient equations are reformulated as a system of first order ordinary differential equations and solved using the ordinary differential equation solver of MATLAB. Numerical study revealed that pounding behaviour of the buildings has considerable influence on the behaviour of the lighter building causing substantial amplification of the response …
Effects Of Membrane Fouling And Scaling On Boron Rejection By Nanofiltration And Reverse Osmosis Membranes, Kha Tu, Allan Chivas, Long Nghiem
Effects Of Membrane Fouling And Scaling On Boron Rejection By Nanofiltration And Reverse Osmosis Membranes, Kha Tu, Allan Chivas, Long Nghiem
Faculty of Engineering - Papers (Archive)
The effects of membrane fouling on the performance of nanofiltration and reverse osmosis membranes with respect to boron rejection and permeate flux were investigated in this study. A nanofiltration (NF270) membrane and a reverse osmosis (BW30) membrane were used in this investigation. Four typical membrane fouling conditions were simulated under controlled laboratory conditions in a cross-flow membrane system using four model foulants including humic acid, sodium alginate, colloidal silica and CaSO4. Amongst these model foulants, humic acid was found to increase boron rejection whereas the other foulants led to a decrease in boron rejection. Properties of foulants were found to …
The Effects Of Size And Orientation On Magnetic Properties And Exchange Bias In Co3o4 Mesoporous Nanowires, Rong Zeng, J Q Wang, Zhixin Chen, Wenxian Li, S. X. Dou
The Effects Of Size And Orientation On Magnetic Properties And Exchange Bias In Co3o4 Mesoporous Nanowires, Rong Zeng, J Q Wang, Zhixin Chen, Wenxian Li, S. X. Dou
Faculty of Engineering - Papers (Archive)
Co3O4 mesoporous nanowires with average single crystalline grain sizes of about 8 nm, 12nm, 25 nm, and 45 nm were synthesized by sintering of microwave-assisted hydrothermal processed belt-Co(OH)2 precursors at 300–500 °C for 2 h. Microstructure analysis was conducted by x-ray diffraction, x-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), field emission SEM (FESEM), transmission electron microscopy (TEM), and high resolution TEM (HRTEM) to confirm the composition, structure, and orientation in the nanowires. Systematic magnetic measurements have also been conducted on the nanowires. It was found that the size and orientation have significant effects on …
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Faculty of Engineering - Papers (Archive)
Edge cracks in cold rolling of the thin strip affect the strip quality and productivity significantly. In this study, an experimental and mechanical investigation on microstructures has been carried out to study the edge crack formation during cold rolling of the thin strip. The effects of the feed material microstructures on the edge crack evolution were studied employing optical microscopy and scanning electron microscopy (SEM). Experimental observation indicates that fine grain occurs in hot-rolled microstructure and coarse grain is produced in ferritic rolled microstructure. Different grain sizes affect significantly the formation mechanics of the microcrack, crack initiation, and orientation of …
Adjusting For Network Size And Composition Effects In Exponential Family Random Graph Models, Pavel N. Krivitsky, M Handcock, Martina Morris
Adjusting For Network Size And Composition Effects In Exponential Family Random Graph Models, Pavel N. Krivitsky, M Handcock, Martina Morris
Faculty of Engineering and Information Sciences - Papers: Part A
Exponential-family random graph models (ERGMs) provide a principled way to model and simulate features common in human social networks, such as propensities for homophily and friend-ofa- friend triad closure. We show that, without adjustment, ERGMs preserve density as network size increases. Density invariance is often not appropriate for social networks. We suggest a simple modification based on an offset which instead preserves the mean degree and accommodates changes in network composition asymptotically. We demonstrate that this approach allows ERGMs to be applied to the important situation of egocentrically sampled data. We analyze data from the National Health and Social Life …