Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1831 - 1860 of 2936

Full-Text Articles in Social and Behavioral Sciences

Fabrication Of Ultra-Thin Nanostructured Bimetallic Foils By Accumulative Roll Bonding And Asymmetric Rolling, Hailiang Yu, Cheng Lu, A Kiet Tieu, Ajit Godbole, Lihong Su, Yong Sun, Mao Liu, Delin Tang, Charlie Kong Jan 2013

Fabrication Of Ultra-Thin Nanostructured Bimetallic Foils By Accumulative Roll Bonding And Asymmetric Rolling, Hailiang Yu, Cheng Lu, A Kiet Tieu, Ajit Godbole, Lihong Su, Yong Sun, Mao Liu, Delin Tang, Charlie Kong

Faculty of Engineering and Information Sciences - Papers: Part A

This paper reports a new technique that combines the features of Accumulative Roll Bonding (ARB) and Asymmetric Rolling (AR). This technique has been developed to enable production of ultra-thin bimetallic foils. Initially, 1.5 mm thick AA1050 and AA6061 foils were roll-bonded using ARB at 2006C, with 50% reduction. The resulting 1.5 mm bimetallic foil was subsequently thinned to 0.04 mm through four AR passes at room temperature. The speed ratio between the upper and lower AR rolls was 151.3. The tensile strength of the bimetallic foil was seen to increase with reduction in thickness. The ductility of the foil was …


Image Guidance During Breast Radiotherapy: A Phantom Dosimetry And Radiation-Induced Second Cancer Risk Study, A Quinn, L Holloway, Peter Metcalfe Jan 2013

Image Guidance During Breast Radiotherapy: A Phantom Dosimetry And Radiation-Induced Second Cancer Risk Study, A Quinn, L Holloway, Peter Metcalfe

Faculty of Engineering and Information Sciences - Papers: Part A

Imaging procedures utilised for patient position verification during breast radiotherapy can add a considerable dose to organs surrounding the target volume on top of therapeutic scatter dose. This study investigated the dose from a breast kilovoltage cone-beam CT (kV-CBCT), a breast megavoltage fan-beam CT (MV-FBCT), and a TomoDirectTM breast treatment. Thermoluminescent dosimeters placed within a female anthropomorphic phantom were utilised to measure the dose to various organs and tissues. The contralateral breast, lungs and heart received 0.40 cGy, 0.45 cGy and 0.40 cGy from the kV-CBCT and 1.74 cGy, 1.39 cGy and 1.73 cGy from the MV-FBCT. In comparison to …


Autonomous Thin Spray-On Liner Application In Irregular Tunnel And Mine Roadway Surfaces, M P. Tibbs, O K. Tyler, S Van Duin, E Baafi Jan 2013

Autonomous Thin Spray-On Liner Application In Irregular Tunnel And Mine Roadway Surfaces, M P. Tibbs, O K. Tyler, S Van Duin, E Baafi

Faculty of Engineering and Information Sciences - Papers: Part A

An autonomous spray application system for a structural Thin Spray-on Liner (TSL) is targeting productivity and safety on underground coal continuous miners by replacing steel mesh, and has broader applications as surface support and confinement in metalliferous mines and civil tunnelling. Polymer chemistry, coating formulation, geotechnical assessment and the autonomous application system are being developed within an integrated package as part of a continuous miner automation project. The polymer-based TSL system, dubbed "ToughSkin", has significant benefits over conventional steel mesh, including; more automatable by spray application, complete skin confinement, active skin reinforcement as a fast-curing composite with substrate, and effective …


Similarity-Based Search For Model Checking: A Pilot Study With Java Pathfinder, Elmin Ibrahimov, Jixing Wang, Zhiquan Zhou Jan 2013

Similarity-Based Search For Model Checking: A Pilot Study With Java Pathfinder, Elmin Ibrahimov, Jixing Wang, Zhiquan Zhou

Faculty of Engineering and Information Sciences - Papers: Part A

When a model checker cannot explore the entire state space because of limited resources, model checking becomes a kind of testing with an attempt to find a failure (violation of properties) quickly. We consider two state sequences in model checking: (i) the sequence in which new states are generated, and (ii) the sequence in which the states generated in sequence (i) are checked for property violation. We observe that neighboring states in sequence (i) often have similarities in certain ways. Based on this observation we propose a search strategy, which generates sequence (ii) in such a way that similar states …


Cost-Sensitive Cascade Graph Neural Networks, Nguyen Van Tuc, Ah Chung Tsoi, Markus Hagenbuchner Jan 2013

Cost-Sensitive Cascade Graph Neural Networks, Nguyen Van Tuc, Ah Chung Tsoi, Markus Hagenbuchner

Faculty of Engineering and Information Sciences - Papers: Part A

This paper introduces a novel cost sensitive weighted samples approach to a cascade of Graph Neural Networks for learning from imbalanced data in the graph structured input domain. This is shown to be very effective in addressing the effects of imbalanced data distribution on learning systems. The proposed idea is based on a weighting mechanism which forces the network to encode misclassified graphs (or nodes) more strongly. We evaluate the approach through an application to the well known Web spam detection problem, and demonstrate that the general-ization performance is improved as a result. Indeed the results obtained reported in this …


A Multi Agent System Based Implementation For Semantic Web Services, J Shen, G Beydoun, G C. Low Jan 2013

A Multi Agent System Based Implementation For Semantic Web Services, J Shen, G Beydoun, G C. Low

Faculty of Engineering and Information Sciences - Papers: Part A

Many information systems developers face high cost in adopting service oriented architectures because of the high cost of locating appropriate services to customise and integrate into their system. This paper aims at reducing this cost by automating much of the composition and service selection effort. It illustrates the use of a Peer-Peer multi agent system (MAS) to facilitate service selection with multiple Quality of Service properties. The system will use semantic enrichment of services in order to facilitate their identification and composition. With semantic driven composition, services can be shared between teams of developers and across multiple organisations connected via …


Mitigation Of Rooftop Solar Pv Impacts And Evening Peak Support By Managing Available Capacity Of Distributed Energy Storage Systems, Md Jan-E- Alam, Kashem Muttaqi, Darmawan Soetanto Jan 2013

Mitigation Of Rooftop Solar Pv Impacts And Evening Peak Support By Managing Available Capacity Of Distributed Energy Storage Systems, Md Jan-E- Alam, Kashem Muttaqi, Darmawan Soetanto

Faculty of Engineering and Information Sciences - Papers: Part A

A high penetration of rooftop solar photovoltaic (PV) resources into low-voltage (LV) distribution networks creates reverse power-flow and voltage-rise problems. This generally occurs when the generation from PV resources substantially exceeds the load demand during high insolation period. This paper has investigated the solar PV impacts and developed a mitigation strategy by an effective use of distributed energy storage systems integrated with solar PV units in LV networks. The storage is used to consume surplus solar PV power locally during PV peak, and the stored energy is utilized in the evening for the peak-load support. A charging/discharging control strategy is …


Strength And Bonding In Reduced Ironsand-Coal Compacts, R J. Longbottom, B J. Monaghan, S A. Nightingale, J G. Mathieson Jan 2013

Strength And Bonding In Reduced Ironsand-Coal Compacts, R J. Longbottom, B J. Monaghan, S A. Nightingale, J G. Mathieson

Faculty of Engineering and Information Sciences - Papers: Part A

In this investigation, the strength and bonding within reduced ironsand-coal compacts were studied, with the aim of better understanding the binding mechanisms in the reduced compacts and, based on this understanding, to improve their strength. Ironsand ore and sub-bituminous coal were mixed and pressed into compacts, which were reduced by heating in a thermogravimetric furnace to temperatures between 1273 and 1573 K under argon. The progress of the reaction was monitored by measuring the weight loss with time. The reduced compacts were found to have low strength in compression testing. The main form of bonding between the reduced ironsand particles …


Self-Adaptation-Based Dynamic Coalition Formation In A Distributed Agent Network: A Mechanism And A Brief Survey, Dayong Ye, Minjie Zhang, Danny Sutanto Jan 2013

Self-Adaptation-Based Dynamic Coalition Formation In A Distributed Agent Network: A Mechanism And A Brief Survey, Dayong Ye, Minjie Zhang, Danny Sutanto

Faculty of Engineering and Information Sciences - Papers: Part A

In some real systems, e.g., distributed sensor networks, individual agents often need to form coalitions to accomplish complex tasks. Due to communication and computation constraints, it is infeasible for agents to directly interact with all other agents to form coalitions. Most previous coalition formation studies, however, overlooked this aspect. Those studies did not provide an explicitly modeled agent network or assumed that agents were in a fully connected network, where an agent can directly communicate with all other agents. Thus, to alleviate this problem, it is necessary to provide a neighborhood network structure, within which agents can directly interact only …


Magnetorheological Elastomers And Their Applications, W H. Li, X Z. Zhang, H Du Jan 2013

Magnetorheological Elastomers And Their Applications, W H. Li, X Z. Zhang, H Du

Faculty of Engineering and Information Sciences - Papers: Part A

Magnetorheological elastomers (MRE) are smart materials whose modulus or mechanical performances can be controlled by an external magnetic field. In this chapter, the current research on the MRE materials fabrication, performance characterisation, modelling and applications is reviewed and discussed. Either anistropic or isotropic or MRE materials are fabricated by different curing conditions where magnetic field is applied or not. Anistropic MREs exhibit higher MR effects than isotropic MREs. Both steady-state and dynamic performances were studied through both experimental and theoretical approaches. The modelling approaches were developed to predict mechanical performances of MREs with both simple and complex structures. The sensing …


Effects Of Tungsten Addition And Heat Treatment Conditions On Microstructure And Mechanical Properties Of Microalloyed Forging Steels, Jingwei Zhao, Zhengyi Jiang, Chong Soo Lee Jan 2013

Effects Of Tungsten Addition And Heat Treatment Conditions On Microstructure And Mechanical Properties Of Microalloyed Forging Steels, Jingwei Zhao, Zhengyi Jiang, Chong Soo Lee

Faculty of Engineering and Information Sciences - Papers: Part A

In the present work, the effects of tungsten (W) addition and heat treatment conditions on the microstructure, impact toughness and tensile properties of microalloyed forging steels were studied. Four kinds of microalloyed forging steels were produced by varying W additions (0, 0.5, 1 and 2 wt%). Heat treatment was carried out at temperatures ranging from 840 to 950 °C followed by air and furnace cooling. Mechanical tests were used to evaluate the room temperature Charpy impact and tensile properties. The resulting microstructures were analysed via optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show …


Modeling The Positioning Of Trichomes On The Leaves Of Plants, Robert S. Anderssen, Maureen P. Edwards, Sergiy Pereverzyev Jr Jan 2013

Modeling The Positioning Of Trichomes On The Leaves Of Plants, Robert S. Anderssen, Maureen P. Edwards, Sergiy Pereverzyev Jr

Faculty of Engineering and Information Sciences - Papers: Part A

A continuing and future challenge in plant science is the "genetics of geometry" [3]: the recovery of information about the dynamics of the genetic mechanisms by which plants control the development of various features of their geometry. Some representative publications dealing with such issues include: (i) the modelling of plant architecture using L- systems and rewriting [18], (ii) the genetic control of floral development [10, 4], and (iii) the positioning of the trichomes (hairs) on the leaves of plants such as Arabidopsis thaliana [25, 23]. It is the positioning of trichomes which is examined in this chapter. The use of …


Reversing Port Rotation Directions In A Container Liner Shipping Network, Shuaian Wang, Qiang Meng Jan 2013

Reversing Port Rotation Directions In A Container Liner Shipping Network, Shuaian Wang, Qiang Meng

Faculty of Engineering and Information Sciences - Papers: Part A

Reversing port rotation directions of ship routes is a practical alteration of container liner shipping networks. The port rotation directions of ship routes not only affect the transit time of containers, as has been recognized by the literature, but also the shipping capacity and transshipment cost. This paper aims to obtain the optimal port rotation directions that minimize the generalized network-wide cost including transshipment cost, slot-purchasing cost and inventory cost. A mixed-integer linear programming model is proposed for the optimal port rotation direction optimization problem and it nests a minimum cost multi-commodity network flow model. The proposed model is applied …


On The Weighting Of The Mean-Absolute-Deviation Cost Minimization Model, S Wang, Q Meng, Z Liu Jan 2013

On The Weighting Of The Mean-Absolute-Deviation Cost Minimization Model, S Wang, Q Meng, Z Liu

Faculty of Engineering and Information Sciences - Papers: Part A

The mean-absolute-deviation cost minimization model, which aims to minimize sum of the mean value and the absolute deviation (AD) of the total cost multiplied by a given non-negative weighting, is one of a number of typical robust optimization models. This paper first uses a straightforward example to show that the solution obtained by this model with some weightings is not actually an optimal decision. This example also illustrates that the mean-absolute-deviation cost minimization model cannot be regarded as the conventional weighted transformation of the relevant multiobjective minimization model aiming to simultaneously minimize the mean value and AD. This paper further …


Modeling The Internal Erosion Behavior Of Lignosulfonate Treated Soil, Rasika Athukorala, Buddhima Indraratna, Jayan S. Vinod Jan 2013

Modeling The Internal Erosion Behavior Of Lignosulfonate Treated Soil, Rasika Athukorala, Buddhima Indraratna, Jayan S. Vinod

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents the development of an analytical model to predict the erosion rate of stabilised soil based on the law of conservation of energy. The model incorporates the strain energy intensity until failure, obtained from the stress-strain curves of lignosulfonate treated soil, to account for the stabilisation. The novel approach of this model is to correlate the shear strength characteristics with the erosion resistance. The proposed equation was used to predict the erosion rates of a non-plastic silty sand treated with lignosulfonate. The erosion resistance was interpreted in terms of the coefficient of soil erosion and the critical shear …


Modelling Microbial Growth In A Closed Environment, Maureen P. Edwards, Ulrike Schumann, Robert S. Anderssen Jan 2013

Modelling Microbial Growth In A Closed Environment, Maureen P. Edwards, Ulrike Schumann, Robert S. Anderssen

Faculty of Engineering and Information Sciences - Papers: Part A

The formulation of models for the growth of microbes (fungi; bacteria) must not only take account of the current number of the microbes but also of the effect of the environment in which the growth is occurring and of the type of measurements used to record the growth. In industrial processes, the effect of physiological (morphological) changes on the growth must be taken into account. When growth is occurring in an open environment which achieves an equilibrium (e.g. balancing growth and harvesting) and is measured as the time evolution of the total number of microbes present (alive and dead), autonomous …


Speed-Based Toll Design For Cordon-Based Congestion Pricing Scheme, Zhiyuan Liu, Qiang Meng, Shuaian Wang Jan 2013

Speed-Based Toll Design For Cordon-Based Congestion Pricing Scheme, Zhiyuan Liu, Qiang Meng, Shuaian Wang

Faculty of Engineering and Information Sciences - Papers: Part A

The cordon-based Electronic Road Pricing (ERP) system in Singapore adopts the average travel speed as an index for evaluating the traffic congestion within a cordon area, and the maintenance of the average travel speed within a satisfactory range is taken as the objective of the toll adjustment. To formulate this practical speed-based toll design problem, this paper proposes a mathematical programming with equilibrium constraint (MPEC) model with the objective of maintaining the traffic condition in the cordon area. In the model, the network users' route choice behavior is assumed to follow probit-based stochastic user equilibrium with elastic demand, asymmetric link …


Mechanical Properties Of Al-Mg-Si Alloy Sheets Produced Using Asymmetric Cryorolling And Ageing Treatment, Hai-Liang Yu, A Kiet Tieu, Cheng Lu, Xiang-Hua Liu, Ajit Godbole, Charlie Kong Jan 2013

Mechanical Properties Of Al-Mg-Si Alloy Sheets Produced Using Asymmetric Cryorolling And Ageing Treatment, Hai-Liang Yu, A Kiet Tieu, Cheng Lu, Xiang-Hua Liu, Ajit Godbole, Charlie Kong

Faculty of Engineering and Information Sciences - Papers: Part A

An asymmetric cryorolling technique was used to reduce the thickness of an Al-Mg-Si alloy sheet from 1.5 mm to 0.19 mm. The samples were subsequently aged for 48 h at 100 degrees celcius. The hardness and tensile strength of both rolled and aged sheets increased with the number of passes up to the sixth pass, but the tensile stress decreased after the seventh pass. Investigation of the microstructure of the sheets showed that the grain size after seven passes was about 235 nm and revealed the presence of Fe-Cr-Mn-Si particles in the samples. The deformation of Fe-Cr-Mn-Si particles and sheet …


Essential Elements In Tactical Planning Models For Container Liner Shipping, Shuaian Wang Jan 2013

Essential Elements In Tactical Planning Models For Container Liner Shipping, Shuaian Wang

Faculty of Engineering and Information Sciences - Papers: Part A

Tactical planning models for liner shipping problems such as network design and fleet deployment usually minimize the total cost or maximize the total profit subject to constraints including ship availability, service frequency, ship capacity, and transshipment. Most models in the literature do not consider slot-purchasing, multi-type containers, empty container repositioning, or ship repositioning, and they formulate the numbers of containers to transport as continuous variables. This paper develops a mixed-integer linear programming model that captures all these elements. It further examines from the theoretical point of view the additional computational burden introduced by incorporating these elements in the planning model. …


Path Planning With A Lazy Significant Edge Algorithm (Lsea), Joseph Polden, Zengxi Pan, Nathan Larkin, Stephen Van Duin Jan 2013

Path Planning With A Lazy Significant Edge Algorithm (Lsea), Joseph Polden, Zengxi Pan, Nathan Larkin, Stephen Van Duin

Faculty of Engineering and Information Sciences - Papers: Part A

Probabilistic methods have been proven to be effective for robotic path planning in a geometrically complex environment. In this paper, we propose a novel approach, which utilizes a specialized roadmap expansion phase, to improve lazy probabilistic path planning. This expansion phase analyses roadmap connectivity information to bias sampling towards objects in the workspace that have not yet been navigated by the robot. A new method to reduce the number of samples required to navigate narrow passages is also proposed and tested. Experimental results show that the new algorithm is more efficient than the traditional path planning methodologies. It was able …


Strain Estimation Of Cfrp-Confined Concrete Columns Using Energy Approach, Thong M. Pham, Muhammad N.S Hadi Jan 2013

Strain Estimation Of Cfrp-Confined Concrete Columns Using Energy Approach, Thong M. Pham, Muhammad N.S Hadi

Faculty of Engineering and Information Sciences - Papers: Part A

A new model is presented for calculating the axial strain of carbon fiber-reinforced polymer (CFRP)-confined concrete columns. An energy-balance approach is introduced to establish a relationship of the energy absorption between a confined concrete column and CFRP. The proposed model was verified using a large database collected from 167 CFRP-confined plain concrete specimens. This database contains 98 circular specimens with diameters ranging between 100 and 152 mm, and 69 square specimens having a side length ranging between 100 and 152 mm. The database covers unconfined concrete strengths from 20 to 50 MPa. The proposed model shows very good correlation with …


Environmental Impact Assessment Of Post Tensioned And Reinforced Concrete Slab Construction, D Miller, J H. Doh, H Guan, M Mulvey, S Fragomeni, T Mccarthy, T Peters Jan 2013

Environmental Impact Assessment Of Post Tensioned And Reinforced Concrete Slab Construction, D Miller, J H. Doh, H Guan, M Mulvey, S Fragomeni, T Mccarthy, T Peters

Faculty of Engineering and Information Sciences - Papers: Part A

In Australia, approximately 30 million tonnes of finished building products are produced each year, with over 56% of this quantity, by mass, being attributed to concrete and a further 6%, steel, highlighting the importance of maximising design efficiencies. The cement industry has been reported responsible for 5% of global carbon dioxide emissions while the construction, operation and maintenance of buildings are estimated to account for 50% of all energy usage and more than 50% of all anthropogenic greenhouse gas (GHG) emissions globally. This research determines some environmental advantages achievable through application of alternate concrete slab construction methods for a typical …


Effects Of Fouling On The Stress-Strain-Degradation Behaviour Of Rail Ballast, Buddhima Indraratna, Nayoma C. Tennakoon, Sanjay Nimbalkar, Cholachat Rujikiatkamjorn Jan 2013

Effects Of Fouling On The Stress-Strain-Degradation Behaviour Of Rail Ballast, Buddhima Indraratna, Nayoma C. Tennakoon, Sanjay Nimbalkar, Cholachat Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part A

Ballast is most commonly used as a structural component of rail track due to its high load bearing capacity, resiliency and rapid drainage. However, ballast along coal freight corridors often becomes fouled due to spilling of coal from moving wagons, in addition to further track deterioration attributed to particle breakage and pumping of soft subgrade. Highly fouled ballast needs to be cleaned or replaced to maintain the desired track resiliency, load bearing capacity and the track alignment. In order to identify the risk associated with fouling, it is important to accurately assess the amount of fouling. In this paper, the …


Finite Element Analysis Of Roll Bit Behaviors In Cold Foil Rolling Process, Liang Hao, Zhengyi Jiang, Dongbin Wei, Xiawei Cheng Jan 2013

Finite Element Analysis Of Roll Bit Behaviors In Cold Foil Rolling Process, Liang Hao, Zhengyi Jiang, Dongbin Wei, Xiawei Cheng

Faculty of Engineering and Information Sciences - Papers: Part A

To investigate roll bite behaviors in cold foil rolling process, a 2D elasto-plastic finite model is established using FEM software ABAQUS. Contact pressure distribution and roll contour in roll bite are also presented, which demonstrate that foil rolling process is different from conventional strip rolling process. The contact area is composed of entry elastic zone, entry plastic zone, an extensive neutral zone, exit plastic zone and exit elastic zone. It conforms to the results of Fleck foil rolling theory. Elastic deformation and work hardening of foil in roll bite are taken into account. The effect of rolling parameters, such as …


Finite Element Modelling Of Surface Roughness Transfer And Oxide Scale Micro Deformation In Metal Manufacturing Process, Zhengyi Jiang, Dongbin Wei, Hejie Li Jan 2013

Finite Element Modelling Of Surface Roughness Transfer And Oxide Scale Micro Deformation In Metal Manufacturing Process, Zhengyi Jiang, Dongbin Wei, Hejie Li

Faculty of Engineering and Information Sciences - Papers: Part A

In the paper, the micro deformation of oxide scale in hot strip rolling has been investigated with considering the friction effect. The finite element simulation of the micro deformation of oxide scale has been successfully conducted, and the calculated surface roughness is compared with the measured value, which shows a good agreement. A crystal plasticity finite element method (CPFEM) model was also successfully developed to analyse the surface roughness transfer during metal manufacturing. The simulation results show a good agreement with the experimental results in the flattening of surface asperity, and the surface roughness decreases significantly with an increase of …


Model-Driven Disaster Management, Siti Hajar Othman, Ghassan Beydoun Jan 2013

Model-Driven Disaster Management, Siti Hajar Othman, Ghassan Beydoun

Faculty of Engineering and Information Sciences - Papers: Part A

Disaster management (DM) is a challenging domain to model because of the variety of dynamic characteristics attached to the domain. Metamodeling is a model-driven approach that describes how semantic domain models can be built into an artifact called a Metamodel. By collecting all the domain concepts and partitioning the domain problems into sub-domain-problems, a metamodel can produce a domain-specific language. This paper presents a Disaster Management Metamodel that can serve as a representational layer of DM expertise. This metamodel leads to better knowledge sharing and facilitates combining and matching different DM activities to best manage the disaster on hand.


Simulating The Stress And Strain Behavior Of Loess Via Scc Model, M D. Liu, J Liu, S Horpibulsuk, W Huang Jan 2013

Simulating The Stress And Strain Behavior Of Loess Via Scc Model, M D. Liu, J Liu, S Horpibulsuk, W Huang

Faculty of Engineering and Information Sciences - Papers: Part A

The behaviour of collapsible soils (loess) is studied in this paper. Simulations of the stress and strain behaviour of the soil are made via the theoretical framework of Structured Cam Clay, with the effect of glutinous ingredient in loess suggested to be modelled as cementation effect. Based on the simulations, the capacity of the model for representing the behaviour loess is investigated, and discussions on modelling the behaviour of collapsible soil in general are given.


Investigating Straight-Pipe Pneumatic Conveying Characteristics For Fluidized Dense-Phase Pneumatic Conveying, A Bansal, S S. Mallick, P W. Wypych Jan 2013

Investigating Straight-Pipe Pneumatic Conveying Characteristics For Fluidized Dense-Phase Pneumatic Conveying, A Bansal, S S. Mallick, P W. Wypych

Faculty of Engineering and Information Sciences - Papers: Part A

This article presents results from an investigation into the pneumatic conveying characteristics (PCC) for horizontal straight-pipe sections for fluidized dense-phase pneumatic conveying of powders. Two fine powders (median particle diameter: 30 and 55 um; particle density: 2300 and 1600 kg m -3; loose-poured bulk density: 700 and 620 kg m-3) were conveyed through 69 mm I.D. x 168 m, 69 mm I.D. x 148 m, 105 mm I.D. x 168 m and 69 mm I.D. x 554 m pipelines for a wide range of air and solids flow rates. Straight-pipe pneumatic conveying characteristics obtained from two sets of pressure tappings …


Removal Of Bisphenol A And Diclofenac By A Novel Fungal Membrane Bioreactor Operated Under Non-Sterile Conditions, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Luong N. Nguyen, Felicity Roddick, William E. Price Jan 2013

Removal Of Bisphenol A And Diclofenac By A Novel Fungal Membrane Bioreactor Operated Under Non-Sterile Conditions, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Luong N. Nguyen, Felicity Roddick, William E. Price

Faculty of Engineering and Information Sciences - Papers: Part A

Previous studies have confirmed significant removal of various trace organic contaminants (TrOCs) by white-rot fungal cultures under sterile batch test conditions. However, little is known about TrOC removal in continuous flow fungal reactors in a non-sterile environment. This study reports the removal of two TrOCs, namely, bisphenol A and diclofenac, by a fungal membrane bioreactor (MBR).


Secure Single Sign-On Schemes Constructed From Nominative Signatures, Jingquan Wang, Guilin Wang, Willy Susilo Jan 2013

Secure Single Sign-On Schemes Constructed From Nominative Signatures, Jingquan Wang, Guilin Wang, Willy Susilo

Faculty of Engineering and Information Sciences - Papers: Part A

Single Sign-on (SSO) allows users to only log on once and then access different services via automatic authentication by using the same credential. However, most existing SSO schemes do not satisfy security notions or require a high trust level on a trusted third party (TTP), even though SSO has become popular in new distributed systems and computer networks. Motivated by this fact, we formalise a new security model of single sign-on, which not only satisfies strong security notions but also has a low trust level on TTP. We then propose a generic construction of SSO from nominative signatures, and present …