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Articles 2641 - 2670 of 14367

Full-Text Articles in Social and Behavioral Sciences

Inertial Microfluidics: Mechanisms And Applications, Jun Zhang, Weihua Li, Gursel Alici Jan 2017

Inertial Microfluidics: Mechanisms And Applications, Jun Zhang, Weihua Li, Gursel Alici

Faculty of Engineering and Information Sciences - Papers: Part B

In microfluidics, the typical sample volume is in the order of nL, which is incompatible with the common biosample volume in biochemistry and clinical diagnostics (usually ranging from 1 μL to approximately 1 mL). The recently emerged inertial microfluidic technology offers the possibility to process large volume (∼mL) of biosample by well-defined micro-structures. In contrast to conventional microfluidic technologies, where fluid inertia is negligible and flow remains almost within Stokes flow region with very low Reynolds number Re≪1 (Re=ρfUfH/μ, where ρ f, Ū f and μ are fluid density, average velocity and dynamic viscosity, respectively, and H is channel hydraulic …

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Bonding Process And Interfacial Reaction In Horizontal Twin-Roll Casting Of Steel/Aluminum Clad Sheet, Gang Chen, Jintao Li, Guangming Xu Jan 2017

Bonding Process And Interfacial Reaction In Horizontal Twin-Roll Casting Of Steel/Aluminum Clad Sheet, Gang Chen, Jintao Li, Guangming Xu

Faculty of Engineering and Information Sciences - Papers: Part B

Asymmetrical and lower heat transport caused by the cladding strip during twin-roll casting (TRC) of clad sheet makes the process window narrow compared with traditional TRC. The effect of pouring temperature on process stability is more remarkable when it is relatively high under high casting speed and casting speed becomes a leading factor when its value is low. The inter-diffusion zone width at the Al/Fe interface depends on the solid/semi-solid contacting time. The longer the time is, the wider the inter-diffusion zone. A widest zone of 3.8 μm is attained under condition of casting speed of 1.25 m/min and pouring …

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Action Learning In Undergraduate Engineering Thesis Supervision, Brad Stappenbelt Jan 2017

Action Learning In Undergraduate Engineering Thesis Supervision, Brad Stappenbelt

Faculty of Engineering and Information Sciences - Papers: Part B

In the present action learning implementation, twelve action learning sets were conducted over eight years. The action learning sets consisted of students involved in undergraduate engineering research thesis work. The concurrent study accompanying this initiative investigated the influence of the action learning environment on student approaches to learning and any accompanying academic, learning and personal benefits realised. The influence of preferred learning styles on set function and student adoption of the action learning process were also examined. The action learning environment implemented had a measurable significant positive effect on student academic performance, their ability to cope with the stresses associated …

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How Should A Local Regime-Switching Model Be Calibrated?, Xin-Jiang He, Song-Ping Zhu Jan 2017

How Should A Local Regime-Switching Model Be Calibrated?, Xin-Jiang He, Song-Ping Zhu

Faculty of Engineering and Information Sciences - Papers: Part B

Local regime-switching models are a natural consequence of combining the concept of a local volatility model with that of a regime-switching model. However, even though Elliott et al. (2015) have derived a Dupire formula for a local regime-switching model, its calibration still remains a challenge, primarily due to the fact that the derived volatility function for each state involves all the state price variables whereas only one market price is available for model calibration, and a direct implementation of Elliott et al.'s formula may not yield stable results. In this paper, a closed system for option pricing and data extraction …

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Thermal Environment And Thermal Sensations Of Occupants Of Nursing Homes: A Field Study, Federico Tartarini, Paul Cooper, Richard Fleming Jan 2017

Thermal Environment And Thermal Sensations Of Occupants Of Nursing Homes: A Field Study, Federico Tartarini, Paul Cooper, Richard Fleming

Faculty of Engineering and Information Sciences - Papers: Part B

A demographic shift is underway in Australia; the number of people aged 65 and over is rapidly increasing. Regulations have been implemented to enhance the quality of care being provided in nursing homes; however, in the aged care sector there is little by way of guidance addressing design and performance issues in regards to Indoor Environmental Quality (IEQ), and there is still uncertainty as to the perceptions of residents on specific IEQ factors. The objectives of this study are to determine: how accredited facilities are performing in regards to thermal comfort conditions; how indoor environmental factors can be assessed in …

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A Hybrid Bp-Ep-Vmp Approach To Joint Channel Estimation And Decoding For Ftn Signaling Over Frequency Selective Fading Channels, Nan Wu, Weijie Yuan, Qinghua Guo, Jingming Kuang Jan 2017

A Hybrid Bp-Ep-Vmp Approach To Joint Channel Estimation And Decoding For Ftn Signaling Over Frequency Selective Fading Channels, Nan Wu, Weijie Yuan, Qinghua Guo, Jingming Kuang

Faculty of Engineering and Information Sciences - Papers: Part B

This paper deals with low-complexity joint channel estimation and decoding for faster-than-Nyquist (FTN) signaling over frequency selective fading channels. The inter-symbol interference (ISI) imposed by FTN signaling and the frequency selective channel are intentionally separated to fully exploit the known structure of the FTN-induced ISI. Colored noise due to the faster sampling rate than that of the Nyquist signaling system is approximated by autoregressive process. A Forney style factor graph representation of the FTN system is developed and Gaussian message passing is performed on the graph. Expectation propagation (EP) is employed to approximate the message from channel decoder to Gaussian …

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Evaluation Of Fertilizer-Drawn Forward Osmosis For Coal Seam Gas Reverse Osmosis Brine Treatment And Sustainable Agricultural Reuse, Youngjin Kim, Yun Chul Woo, Sherub Phuntsho, Long D. Nghiem, Ho Kyong Shon, Seungkwan Hong Jan 2017

Evaluation Of Fertilizer-Drawn Forward Osmosis For Coal Seam Gas Reverse Osmosis Brine Treatment And Sustainable Agricultural Reuse, Youngjin Kim, Yun Chul Woo, Sherub Phuntsho, Long D. Nghiem, Ho Kyong Shon, Seungkwan Hong

Faculty of Engineering and Information Sciences - Papers: Part B

The fertilizer-drawn forward osmosis (FDFO) was investigated for treating coal seam gas (CSG) produced water to generate nutrient rich solution for irrigation. Its performance was evaluated and compared with reverse osmosis (RO) in terms of specific energy consumption (SEC) and nutrient concentrations in the final product water. The RO-FDFO hybrid process was developed to further improve FDFO. The results showed that FDFO has the lowest SEC followed by the RO-FDFO and RO processes. The final nutrient concentration simulation demonstrated that the RO-FDFO hybrid process has lower final concentration, higher maximum recovery and lower nutrient loss than the stand alone FDFO …

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Improved Performance Of Ballasted Rail Tracks Using Plastics And Rubber Inclusions, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn Jan 2017

Improved Performance Of Ballasted Rail Tracks Using Plastics And Rubber Inclusions, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part B

Current railroads require significant upgrading to meet the challenges of heavier loads at higher speeds. Due to excessive track degradation, the Australian rail industry spends large amounts on frequent track repair and maintenance, as well as ground improvement prior to track construction where soft and saturated subgrade soils pose considerable difficulties in design and construction. Moreover, the degradation of ballast particles under impact loading seriously hampers the safety and efficiency of rail tracks, which leads to speed restrictions and more frequent track upgrading. Hence, there is a need for innovative design solutions that can extend the service life of tracks …

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Performance Assessment Of Geocell-Reinforced Subballast: Modeling And Design Implications, Ngoc Trung Ngo, Buddhima Indraratna, Michael Biabani Jan 2017

Performance Assessment Of Geocell-Reinforced Subballast: Modeling And Design Implications, Ngoc Trung Ngo, Buddhima Indraratna, Michael Biabani

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents a study of the load-deformation behavior of geocell-stabilised subballast subjected to cyclic loads using a large-scale track process simulation apparatus and numerical modelling. The tests and numerical simulations were conducted to mimic the actual track conditions. Subjected to a given frequency and cyclic loads the predicted load-deformation behavior of the subballast with and without geocell inclusions match reasonably with those measured in the laboratory, and show that geocell could effectively decrease the lateral and axial deformations of the reinforced subballast. The results also provide an insight to design of rail tracks capturing the roles of geocell in …

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Behaviour Of Small Diameter Steel Tubes Under Axial Compression, Faez Alhussainy, M Neaz Sheikh, Muhammad N. S Hadi Jan 2017

Behaviour Of Small Diameter Steel Tubes Under Axial Compression, Faez Alhussainy, M Neaz Sheikh, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

Small diameter steel tubes are used in many civil engineering applications. Recently, the behaviour of concrete columns reinforced with small diameter steel tubes was experimentally and analytically investigated. This study explores the effect of unsupported length to the outside diameter (L/D) ratio on the axial compressive behaviour of small diameter steel tubes, which has not yet been adequately investigated. Galvanized and cold-formed steel tube specimens with L/D ratio of 2 to 12 were tested. It was observed that for specimens with L/D ratio of 2 and 4, the compressive failure occurred due to local elephant's foot buckling. However, the …

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Numerical Investigation Of Acoustic Emission Events Of Argillaceous Sandstones Under Confining Pressure, Zhaohui Chong, Xuehua Li, Jingzheng Lu, Tian Chen, Ji Zhang, Xiangyu Chen Jan 2017

Numerical Investigation Of Acoustic Emission Events Of Argillaceous Sandstones Under Confining Pressure, Zhaohui Chong, Xuehua Li, Jingzheng Lu, Tian Chen, Ji Zhang, Xiangyu Chen

Faculty of Engineering and Information Sciences - Papers: Part B

At the laboratory scale, locating acoustic emission (AE) events is a comparatively mature method for evaluating cracks in rock materials, and the method plays an important role in numerical simulations. This study is aimed at developing a quantitative method for the measurement of acoustic emission (AE) events in numerical simulations. Furthermore, this method was applied to estimate the crack initiation, propagation, and coalescence in rock materials. The discrete element method-acoustic emission model (DEM-AE model) was developed using an independent subprogram. This model was designed to calculate the scalar seismic tensor of particles in the process of movement and further to …

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Microbial Fuel Cell Is Emerging As A Versatile Technology: A Review On Its Possible Applications, Challenges And Strategies To Improve The Performances, Ravinder Kumar, Lakhveer Singh, A W. Zularisam, Faisal I. Hai Jan 2017

Microbial Fuel Cell Is Emerging As A Versatile Technology: A Review On Its Possible Applications, Challenges And Strategies To Improve The Performances, Ravinder Kumar, Lakhveer Singh, A W. Zularisam, Faisal I. Hai

Faculty of Engineering and Information Sciences - Papers: Part B

Microbial fuel cells (MFCs) are emerging as a versatile renewable energy technology. This is particularly because of themultidimensional applications of this eco-friendly technology. The technology depends on the electroactive bacteria,popularly known as exoelectrogens, to simultaneously produce electric power and treat wastewater. Electrodemodifications with nanomaterials such as gold nanoparticles and iron oxide nanoparticles or pretreatment methods suchas sonication and autoclave sterilization have shown promising results in enhancing MFC performance for electricitygeneration and wastewater treatment. The MFC technology has been also investigated for the removal of various heavymetals and toxic elements, and to detect the presence of toxic elements in wastewater. In …

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Flow Rate-Insensitive Microparticle Separation And Filtration Using A Microchannel With Arc-Shaped Groove Arrays, Qianbin Zhao, Dan Yuan, Sheng Yan, Jun Zhang, Haiping Du, Gursel Alici, Weihua Li Jan 2017

Flow Rate-Insensitive Microparticle Separation And Filtration Using A Microchannel With Arc-Shaped Groove Arrays, Qianbin Zhao, Dan Yuan, Sheng Yan, Jun Zhang, Haiping Du, Gursel Alici, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part B

Inertial microfluidics can separate microparticles in a continuous and high-throughput manner, and is very promising for a wide range of industrial, biomedical and clinical applications. However, most of the proposed inertial microfluidic devices only work effectively at a limited and narrow flow rate range because the performance of inertial particle focusing and separation is normally very sensitive to the flow rate (Reynolds number). In this work, an innovative particle separation method is proposed and developed by taking advantage of the secondary flow and particle inertial lift force in a straight channel (AR = 0.2) with arc-shaped groove arrays patterned on …

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Indoor Air Temperature And Agitation Of Nursing Home Residents With Dementia, Federico Tartarini, Paul Cooper, Richard Fleming, Marijka Batterham Jan 2017

Indoor Air Temperature And Agitation Of Nursing Home Residents With Dementia, Federico Tartarini, Paul Cooper, Richard Fleming, Marijka Batterham

Faculty of Engineering and Information Sciences - Papers: Part B

This study aimed to determine the specific correlation between indoor air temperature and agitation of nursing home residents with dementia. Agitated behaviors of 21 residents, living in 1 nursing home, were assessed for a 10-month period using the Cohen-Mansfield Agitation Inventory (CMAI). The CMAI Total Frequency scores were found to increase significantly when indoor average temperatures deviated from 22.6°C. In addition, cumulative exposure to temperatures higher than 26°C and lower than 20°C was linearly correlated with CMAI Total Frequency scores. Results showed that agitated behaviors not only affected the person manifesting them but were found to be disruptive for other …

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Site-Specific Atomic-Scale Characterisation Of Retained Austenite In A Strip Cast Trip Steel, Zhiping Xiong, Ahmed A. Saleh, Ross Marceau, A S. Taylor, N E. Stanford, Andrii Kostryzhev, Elena V. Pereloma Jan 2017

Site-Specific Atomic-Scale Characterisation Of Retained Austenite In A Strip Cast Trip Steel, Zhiping Xiong, Ahmed A. Saleh, Ross Marceau, A S. Taylor, N E. Stanford, Andrii Kostryzhev, Elena V. Pereloma

Faculty of Engineering and Information Sciences - Papers: Part B

Knowledge of carbon content in retained austenite (RA) with different neighbouring phases is essential to understand the chemical stability of RA, which is useful for microstructure tuning of transformation-induced plasticity (TRIP) steels. The present study investigates different morphologies and chemical compositions of RA by correlating electron backscattering diffraction, transmission electron microscopy and atom probe tomography. The effect of neighbouring phases, such as polygonal ferrite, bainitic ferrite lath, ferrite in granular bainite and carbides, on the carbon content in the RA is investigated. The results reveal that the film RA morphology does not always have a higher carbon content than the …

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Strain-Induced Ferrite Formation And Its Effect On Mechanical Properties Of A Dual Phase Steel Produced Using Laboratory Simulated Strip Casting, Zhiping Xiong, Ahmed A. Saleh, Andrii Kostryzhev, Elena V. Pereloma Jan 2017

Strain-Induced Ferrite Formation And Its Effect On Mechanical Properties Of A Dual Phase Steel Produced Using Laboratory Simulated Strip Casting, Zhiping Xiong, Ahmed A. Saleh, Andrii Kostryzhev, Elena V. Pereloma

Faculty of Engineering and Information Sciences - Papers: Part B

Thermo-mechanical processing of a strip cast dual phase (DP) steel was carried out using a Gleeble thermo-mechanical simulator. The effect of deformation temperatures in the range from 1050 to 700 °C on the microstructure evolution was investigated using optical, scanning and transmission electron microscopy along with electron backscattering diffraction (EBSD). Strain-induced ferrite (SIF) formation was observed following austenite deformation (∼0.41 reduction) in the 800–700 °C temperature range, leading to a ferrite grain refinement down to 3.1 ± 2.3 μm. A novel segmentation procedure was applied to separate selected EBSD maps into polygonal ferrite, SIF and second phase regions (bainite/martensite). Following …

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Greenhouse Gas Emissions From Different Pig Manure Management Techniques: A Critical Analysis, Conor Dennehy, Peadar G. Lawlor, Yan Jiang, Gillian Gardiner, Sihuang Xie, Long D. Nghiem, Xinmin Zhan Jan 2017

Greenhouse Gas Emissions From Different Pig Manure Management Techniques: A Critical Analysis, Conor Dennehy, Peadar G. Lawlor, Yan Jiang, Gillian Gardiner, Sihuang Xie, Long D. Nghiem, Xinmin Zhan

Faculty of Engineering and Information Sciences - Papers: Part B

Manure management is the primary source of greenhouse gas (GHG) emissions from pig farming, which in turn accounts for 18% of the total global GHG emissions from the livestock industry. In this review, GHG emissions (N2O and CH4 emissions in particular) from individual pig manure (PGM) management practices (European practises in particular) are systematically analyzed and discussed. These manure management practices include manure storage, land application, solid/liquid separation, anaerobic digestion, composting and aerobic wastewater treatment. The potential reduction in net GHG emissions by changing and optimising these techniques is assessed. This review also identifies key research gaps …

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Exploration Of An Innovative Draw Solution For A Forward Osmosis-Membrane Distillation Desalination Process, Nguyen Cong Nguyen, Shiao-Shing Chen, Shubham Jain, Hau Thi Nguyen, Saikat Sinha Ray, Hao H. Ngo, Wenshan Guo, Ngoc Tuan Lam, Hung Duong Jan 2017

Exploration Of An Innovative Draw Solution For A Forward Osmosis-Membrane Distillation Desalination Process, Nguyen Cong Nguyen, Shiao-Shing Chen, Shubham Jain, Hau Thi Nguyen, Saikat Sinha Ray, Hao H. Ngo, Wenshan Guo, Ngoc Tuan Lam, Hung Duong

Faculty of Engineering and Information Sciences - Papers: Part B

Forward osmosis (FO) has emerged as a viable technology to alleviate the global water crisis. The greatest challenge facing the application of FO technology is the lack of an ideal draw solution with high water flux and low reverse salt flux. Hence, the objective of this study was to enhance FO by lowering reverse salt flux and maintaining high water flux; the method involved adding small concentrations of Al2(SO4)3 to a MgCl2 draw solution. Results showed that 0.5 M MgCl2 mixed with 0.05 M of Al2(SO4)3 at pH …

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Residual Factor As A Variable In Slope Reliability Analysis, Gautam Bhattacharya, Robin N. Chowdhury, Subhadeep Metya Jan 2017

Residual Factor As A Variable In Slope Reliability Analysis, Gautam Bhattacharya, Robin N. Chowdhury, Subhadeep Metya

Faculty of Engineering and Information Sciences - Papers: Part B

In the past, residual factor R in strain-softening soil slopes has been included, either directly or indirectly, as a deterministic variable in both deterministic and probabilistic studies. This paper discusses the uncertainties associated with R and outlines a systematic approach for the reliability analysis of a natural slope in which shear strength parameters and pore pressure ratio are random variables, each assumed with a lognormal probability distribution. For the residual factor R, seven probability distribution options under the generalized beta-distribution system are considered. Slope reliability is computed based on the first order reliability method (FORM) and validated against Monte-Carlo simulation …

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The Geometric Triharmonic Heat Flow Of Immersed Surfaces Near Spheres, James A. Mccoy, Scott Parkins, Glen Wheeler Jan 2017

The Geometric Triharmonic Heat Flow Of Immersed Surfaces Near Spheres, James A. Mccoy, Scott Parkins, Glen Wheeler

Faculty of Engineering and Information Sciences - Papers: Part B

We consider closed immersed surfaces in R^3 evolving by the geometric triharmonic heat flow. Using local energy estimates, we prove interior estimates and a positive absolute lower bound on the lifespan of solutions depending solely on the local concentration of curvature of the initial immersion in L^2. We further use an {\epsilon}-regularity type result to prove a gap lemma for stationary solutions. Using a monotonicity argument, we then prove that a blowup of the flow approaching a singular time is asymptotic to a non-umbilic embedded stationary surface. This allows us to conclude that any solution with initial L^2-norm of the …

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Reinforcing Synchronization Securely In Online Contests With Embedded Computing, Wei Wang, Peng Xu, Laurence T. Yang, Willy Susilo, Jinjun Chen Jan 2017

Reinforcing Synchronization Securely In Online Contests With Embedded Computing, Wei Wang, Peng Xu, Laurence T. Yang, Willy Susilo, Jinjun Chen

Faculty of Engineering and Information Sciences - Papers: Part B

When competing in eBay bidding, online games or e-exams in embedded computing environments, people naturally face asynchronous starts from different computing devices, which is treated as a security risk of online contests. The security risks of online contest also include eavesdropping during data transmission without intended rights, and false start by malicious competitors, which also means asynchrony in contests. Accordingly, online contests need security guarantee especially on synchronization. In this paper, for synchronic and secure start in a contest, we update security requirements of confidentiality, anonymity and synchrony comparing to our previous work. Based on the updated requirements, we propose …

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Ontological Learner Profile Identification For Cold Start Problem In Micro Learning Resources Delivery, Geng Sun, Tingru Cui, Jun Shen, Dongming Xu, Ghassan Beydoun, Shiping Chen Jan 2017

Ontological Learner Profile Identification For Cold Start Problem In Micro Learning Resources Delivery, Geng Sun, Tingru Cui, Jun Shen, Dongming Xu, Ghassan Beydoun, Shiping Chen

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.

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Leveraging Stacked Denoising Autoencoder In Prediction Of Pathogen-Host Protein-Protein Interactions, Huaming Chen, Jun Shen, Lei Wang, Jiangning Song Jan 2017

Leveraging Stacked Denoising Autoencoder In Prediction Of Pathogen-Host Protein-Protein Interactions, Huaming Chen, Jun Shen, Lei Wang, Jiangning Song

Faculty of Engineering and Information Sciences - Papers: Part B

In big data research related to bioinformatics, one of the most critical areas is proteomics. In this paper, we focus on the protein-protein interactions, especially on pathogen-host protein-protein interactions (PHPPIs), which reveals the critical molecular process in biology. Conventionally, biologists apply in-lab methods, including small-scale biochemical, biophysical, genetic experiments and large-scale experiment methods (e.g. yeast-two-hybrid analysis), to identify the interactions. These in-lab methods are time consuming and labor intensive. Since the interactions between proteins from different species play very critical roles for both the infectious diseases and drug design, the motivation behind this study is to provide a basic framework …

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Towards Elucidating The Structural Principles Of Host-Pathogen Protein-Protein Interaction Networks: A Bioinformatics Survey, Huaming Chen, Jiangning Song, Geng Sun, Jun Shen, Lei Wang Jan 2017

Towards Elucidating The Structural Principles Of Host-Pathogen Protein-Protein Interaction Networks: A Bioinformatics Survey, Huaming Chen, Jiangning Song, Geng Sun, Jun Shen, Lei Wang

Faculty of Engineering and Information Sciences - Papers: Part B

The ultimate goal of systems biology research area is to accurately predict the behavior of biological systems through the construction of computational models, using the related molecular-level data as the input, especially when the structural information of such biological system is available. Combining the three-dimensional (3D) structural information of the cohort of macromolecules underpinning the biological system, the researchers are poised with an unprecedented opportunity to gain a full understanding on how the molecules interact with each other, particularly for an interaction network, e.g. protein-protein interaction networks. Specifically, there are currently a limited number of studies focused on the reconstruction …

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Assisting Open Education Resource Providers And Instructors To Deal With Cold Start Problem In Adaptive Micro Learning: A Service Oriented Solution, Geng Sun, Tingru Cui, Dongming Xu, Huaming Chen, Shiping Chen, Jun Shen Jan 2017

Assisting Open Education Resource Providers And Instructors To Deal With Cold Start Problem In Adaptive Micro Learning: A Service Oriented Solution, Geng Sun, Tingru Cui, Dongming Xu, Huaming Chen, Shiping Chen, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.

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A Qr Code Watermarking Approach Based On The Dwt-Dct Technique, Yang-Wai Chow, Willy Susilo, Joseph Tonien, Wei Zong Jan 2017

A Qr Code Watermarking Approach Based On The Dwt-Dct Technique, Yang-Wai Chow, Willy Susilo, Joseph Tonien, Wei Zong

Faculty of Engineering and Information Sciences - Papers: Part B

The rapid growth in Internet and communication technology has facilitated an escalation in the exchange of digital multimedia content. This has resulted in an increase in copyright infringement, which has led to a greater demand for more robust copyright protection mechanisms. Digital watermarking is a means of detecting ownership and illegal use of digital products. This paper presents an approach to watermarking images by embedding QR code information in a digital image.

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Dynamic Searchable Symmetric Encryption With Physical Deletion And Small Leakage, Peng Xu, Shuai Liang, Wei Wang, Willy Susilo, Qianhong Wu, Hai Jin Jan 2017

Dynamic Searchable Symmetric Encryption With Physical Deletion And Small Leakage, Peng Xu, Shuai Liang, Wei Wang, Willy Susilo, Qianhong Wu, Hai Jin

Faculty of Engineering and Information Sciences - Papers: Part B

Dynamic Searchable Symmetric Encryption (DSSE) allows a client not only to search over ciphertexts as the traditional search- able symmetric encryption does, but also to update these ciphertexts according to requirements, e.g., adding or deleting some ciphertexts. It has been recognized as a fundamental and promising method to build secure cloud storage.

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Continuous Leakage Resilient Lossy Trapdoor Functions, Sujuan Li, Yi Mu, Mingwu Zhang, Futai Zhang Jan 2017

Continuous Leakage Resilient Lossy Trapdoor Functions, Sujuan Li, Yi Mu, Mingwu Zhang, Futai Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

Lossy trapdoor functions (LTFs) were first introduced by Peikert and Waters (STOC'08). Since their introduction, lossy trapdoor functions have found numerous applications. They can be used as tools to construct important cryptographic primitives such as injective one-way trapdoor functions, chosen-ciphertext-secure public key encryptions, deterministic encryptions, et al. In this paper, we focus on the lossy trapdoor functions in the presence of continuous leakage. We introduce the new notion of updatable lossy trapdoor functions (ULTFs) and give their formal definition and security properties. Based on these, we extend the security model to the LTFs against continuous leakage when the evaluation algorithm …

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Privacy-Preserving Mutual Authentication In Rfid With Designated Readers, Fuchun Guo, Yi Mu, Willy Susilo, Vijay Varadharajan Jan 2017

Privacy-Preserving Mutual Authentication In Rfid With Designated Readers, Fuchun Guo, Yi Mu, Willy Susilo, Vijay Varadharajan

Faculty of Engineering and Information Sciences - Papers: Part B

We study privacy-preserving mutual authentication in radio-frequency identification systems with designated readers (PP-MADR in short). In PP-MADR, each tag has its designated-reader group instead of all readers, and only tags and their designated readers can authenticate each other. Other readers and adversaries cannot trace tags or know their designated readers. The most challenging task of constructing such a PP-MADR protocol is the verification of reader designation without compromising tag privacy. We found that traditional solutions are impractical due to linear storage growth on tags, linear computation growth on tags, or requiring new key generations for designated readers. In this paper, …

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Potential Biological And Chemical Clogging Of Piezometer Filters In Acid Sulphate Soil, Buddhima Indraratna, Pankaj Baral, Jayantha Ameratunga, Bandula Kendaragama Jan 2017

Potential Biological And Chemical Clogging Of Piezometer Filters In Acid Sulphate Soil, Buddhima Indraratna, Pankaj Baral, Jayantha Ameratunga, Bandula Kendaragama

Faculty of Engineering and Information Sciences - Papers: Part B

Instrumentation for performance monitoring of an embankment built on soft soils is vital for assessing the progress of consolidation and confirming (or refuting) soil parameters used in design when there are significant design uncertainties and the monitoring data can be used to calibrate the design soil parameters. A suite of instruments including settlement plates, extensometers, piezometers, inclinometers is often employed for this purpose. In the first Author's experience, erroneous readings interpretations of pore water pressure (PWP) readings have been reported in various case studies involving transport infrastructure development and reclamations works both in Australia and South East Asia, especially in …

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