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Full-Text Articles in Social and Behavioral Sciences
Secure Delegation Of Signing Power From Factorization, Yong Yu, Man Ho Au, Yi Mu, Willy Susilo, Huai Wu
Secure Delegation Of Signing Power From Factorization, Yong Yu, Man Ho Au, Yi Mu, Willy Susilo, Huai Wu
Faculty of Engineering and Information Sciences - Papers: Part A
Delegation of signing is a working way common in oce automation work, and is also an important approach to establish trust. Proxy signature is an important cryptographic primitive for delegating the signing powers and it has found many real world applications. The existing proxy signature schemes from factorization assumption are either insecure or inecient. In this paper, we propose a novel, ecient and provably secure proxy signature scheme from factorization. Our construction makes use of a factorization based key-exposure free chameleon hash function in the delegation phase and the proxy signer needs only to nd a collision to a chameleon …
Logarithmic Size Ring Signatures Without Random Oracles, Clementine Gritti, Willy Susilo, Thomas Plantard
Logarithmic Size Ring Signatures Without Random Oracles, Clementine Gritti, Willy Susilo, Thomas Plantard
Faculty of Engineering and Information Sciences - Papers: Part A
Ring signatures enable a user to anonymously sign a message on behalf of group of users. In this paper, we propose the first ring signature scheme whose size is O(log2N), where N is the number of users in the ring. We achieve this result by improving Chandran et al.’s ring signature scheme presented at ICALP 2007. Our scheme uses a common reference string and non-interactive zero-knowledge proofs. The security of our scheme is proven without requiring random oracles.
Quantum Oblivious Set-Member Decision Protocol, Run-Hua Shi, Yi Mu, Hong Zhong, Shun Zhang
Quantum Oblivious Set-Member Decision Protocol, Run-Hua Shi, Yi Mu, Hong Zhong, Shun Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
We present and define a privacy-preserving problem called the oblivious set-member decision problem, which allows a server to decide whether a private secret of a user is a member of his private set in an oblivious manner. Namely, if the secret belongs to his private set, he does not know which member it is. We propose a quantum solution to the oblivious set-member decision problem. Compared to classical solutions, the proposed quantum protocol achieves an exponential reduction in communication complexity, since it only needs O(1) communication cost.
Understanding Risk Communication Gaps Through E-Government Website And Twitter Hashtag Content Analyses: The Case Of Indonesia's Mt. Sinabung Eruption, Akemi Takeoka Chatfield, Christopher G. Reddick
Understanding Risk Communication Gaps Through E-Government Website And Twitter Hashtag Content Analyses: The Case Of Indonesia's Mt. Sinabung Eruption, Akemi Takeoka Chatfield, Christopher G. Reddick
Faculty of Engineering and Information Sciences - Papers: Part A
Despite operational volcano surveillance using meteorological satellite, thermal remote sensing and infrared camera technologies, predicting a volcano's hazardous activity and explosive eruption, with any accuracy, remains nearly impossible. Volcanic hazards and risk literature identifies risk communication as critical but insufficiently understood. This paper, therefore, investigates disaster risk communications during Indonesia's Mt. Sinabung eruptions in February 2014, causing 16 deaths and continuous evacuations of 30,000 residents. We critically examined one-way government-to-citizens communications via e-government websites and Twitter and citizens' multi-directional communications via #sinabung hashtag for sharing volcano risk perceptions about affected villagers. Our Twitter analysis of #sinabung found evidence for the …
Two Quantum Protocols For Oblivious Set-Member Decision Problem, Run-Hua Shi, Yi Mu, Hong Zhong, Jie Cui, Shun Zhang
Two Quantum Protocols For Oblivious Set-Member Decision Problem, Run-Hua Shi, Yi Mu, Hong Zhong, Jie Cui, Shun Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, we defined a new secure multi-party computation problem, called Oblivious Set-member Decision problem, which allows one party to decide whether a secret of another party belongs to his private set in an oblivious manner. There are lots of important applications of Oblivious Set-member Decision problem in fields of the multi-party collaborative computation of protecting the privacy of the users, such as private set intersection and union, anonymous authentication, electronic voting and electronic auction. Furthermore, we presented two quantum protocols to solve the Oblivious Set-member Decision problem. Protocol I takes advantage of powerful quantum oracle operations so that …
Benefits Of Online Health Education: Perception From Consumers And Health Professionals, Khin Than Win, Naffisah Mohd Hassan, Andrew Bonney, Donald Iverson
Benefits Of Online Health Education: Perception From Consumers And Health Professionals, Khin Than Win, Naffisah Mohd Hassan, Andrew Bonney, Donald Iverson
Faculty of Engineering and Information Sciences - Papers: Part A
With the advancement in technology and availability of the Internet, online health education could become one of the media for health education. As health education is to persuade patients on health behavioural change, understanding perceived benefits of online health education is an important aspect to explore. The aim of this study is to explore consumers and health professionals opinion on online health education. Literature review was conducted and identified the benefits of online health education (OHE). Survey was conducted to health consumers and health professionals. Descriptive analyses were performed using SPSS Version 19.0. The analysis of the literature has identified …
Bio-Inspired Cost-Aware Optimization For Data-Intensive Service Provision, Lijuan Wang, Jun Shen, Junzhou Luo
Bio-Inspired Cost-Aware Optimization For Data-Intensive Service Provision, Lijuan Wang, Jun Shen, Junzhou Luo
Faculty of Engineering and Information Sciences - Papers: Part A
The use of Big Data and the development of cloud computing have led to greater dependence on data-intensive services. Each service may actually request or create a large amount of data sets. The scope, number, and complexity of data-intensive services are all set to soar in the future. To compose these services will be more challenging. Issues of autonomy, scalability, adaptability, and robustness, become difficult to resolve. Bio-inspired algorithms can overcome the new challenging requirements of data-intensive service provision. It is useful for the provision of data-intensive services to explore key features and mechanisms of biological systems and accordingly to …
Adaptively Secure Identity-Based Broadcast Encryption With A Constant-Sized Ciphertext, Jongkil Kim, Willy Susilo, Man Ho Au, Jennifer Seberry
Adaptively Secure Identity-Based Broadcast Encryption With A Constant-Sized Ciphertext, Jongkil Kim, Willy Susilo, Man Ho Au, Jennifer Seberry
Faculty of Engineering and Information Sciences - Papers: Part A
In this work, we present an adaptively secure identity-based broadcast encryption system featuring constant sized ciphertext in the standard model. The size of the public key and the private keys of our system are both linear in the maximum number of receivers. Also, our system is fully collusion-resistant and has stateless receivers. Compared with the state-of-the-art, our scheme is well optimized for the broadcast encryption. The computational complexity of decryption of our scheme depends only on the number of receivers, not the maximum number of receivers of the system. Technically, we employ dual system encryption technique and our proposal offers …
Improved Identity-Based Online/Offline Encryption, Jianchang Lai, Yi Mu, Fuchun Guo, Willy Susilo
Improved Identity-Based Online/Offline Encryption, Jianchang Lai, Yi Mu, Fuchun Guo, Willy Susilo
Faculty of Engineering and Information Sciences - Papers: Part A
The notion of online/offline encryption was put forth by Guo, Mu and Chen (FC 2008), where they proposed an identity-based scheme called identity-based online/offline encryption (IBOOE). An online/ offline encryption separates an encryption into two stages: offline and online. The offline phase carries much more computational load than the online phase, where the offline phase does not require the information of the message to be encrypted and the identity of the receiver. Subsequently, many applications of IBOOE have been proposed in the literature. As an example, Hobenberger and Waters (PKC 2014) have recently applied it to attribute-based encryption. In this …
An Agent-Mediated Platform For Business Processes, Hoa Khanh Dam, Aditya Ghose, Mohammad Qasim
An Agent-Mediated Platform For Business Processes, Hoa Khanh Dam, Aditya Ghose, Mohammad Qasim
Faculty of Engineering and Information Sciences - Papers: Part A
Business processes have been widely becoming crucial assets of organisations across various industries and domains. The flexibility in dealing with changes when business processes are executed has significant impact on the success of an organisation's business operations, especially in the current ever-changing business environment. In this context, agent-based systems offer a promisingly powerful platform for business process execution. In this paper, the authors propose an agent-mediated platform for business processes with the aim to contribute to bridge the gap between business process management and agent-oriented development. They present a conceptual mapping method for a seamless transition from business process models …
A Phantom Assessment Of Achievable Contouring Concordance Across Multiple Treatment Planning Systems, Elise M. Pogson, Jarrad Begg, Michael Jameson, Claire Dempsey, Drew Latty, Vikneswary Batumalai, Andrew Lim, Kankean Kandasamy, Peter E. Metcalfe, Lois C. Holloway
A Phantom Assessment Of Achievable Contouring Concordance Across Multiple Treatment Planning Systems, Elise M. Pogson, Jarrad Begg, Michael Jameson, Claire Dempsey, Drew Latty, Vikneswary Batumalai, Andrew Lim, Kankean Kandasamy, Peter E. Metcalfe, Lois C. Holloway
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, the highest level of inter- and intra-observer conformity achievable with different treatment planning systems (TPSs), contouring tools, shapes, and sites have been established for metrics including the Dice similarity coefficient (DICE) and Hausdorff Distance. High conformity values, e.g. DICEBreast_Shape = 0.99 ± 0.01, were achieved. Decreasing image resolution decreased contouring conformity.
Induced Molecular Dissociations As A Radiation Damage Descriptor (Nanodosimetry), A Traore, L Ellis-Gibbings, Alexey Verkhovtsev, K Krupa, A Munoz, Fernando Blanco, Gustavo Garcia
Induced Molecular Dissociations As A Radiation Damage Descriptor (Nanodosimetry), A Traore, L Ellis-Gibbings, Alexey Verkhovtsev, K Krupa, A Munoz, Fernando Blanco, Gustavo Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
We present a nanodosimeter software based on Monte Carlo, termed: Low Energy Particle Track Simulation. For medical applications purposes, we propose bond breakings to describe the energy deposited taking water as an example. This tool aims to improve current treatment planning approach based on absorbed dose.
Thin Silicon Strip Detectors For Beam Monitoring In Micro-Beam Radiation Therapy, Marco Povoli, Enver Alagoz, Alberto Bravin, Iwan Cornelius, E Bräuer-Krisch, Pauline Fournier, Thor E. Hansen, Angela Kok, Michael L. F Lerch, E Monakhov, J Morse, Marco Petasecca, Herwig Requardt, Anatoly B. Rosenfeld, D Röhrich, H Sandaker, M Salome, B Stugu
Thin Silicon Strip Detectors For Beam Monitoring In Micro-Beam Radiation Therapy, Marco Povoli, Enver Alagoz, Alberto Bravin, Iwan Cornelius, E Bräuer-Krisch, Pauline Fournier, Thor E. Hansen, Angela Kok, Michael L. F Lerch, E Monakhov, J Morse, Marco Petasecca, Herwig Requardt, Anatoly B. Rosenfeld, D Röhrich, H Sandaker, M Salome, B Stugu
Faculty of Engineering and Information Sciences - Papers: Part A
Microbeam Radiation Therapy (MRT) is an emerging cancer treatment that is currently being developed at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. This technique uses a highly collimated and fractionated X-ray beam array with extremely high dose rate and very small divergence, to benefit from the dose-volume effect, thus sparing healthy tissue. In case of any beam anomalies and system malfunctions, special safety measures must be installed, such as an emergency safety shutter that requires continuous monitoring of the beam intensity profile. Within the 3DMiMic project, a novel silicon strip detector that can tackle the special features of …
Complex Internal Rearrangement Processes Triggered By Electron Transfer To Acetic Acid, Paulo Limao-Vieira, G Meneses, T Cunha, A. Gil, M Calhorda, Gustavo Garcia, F. Ferreira Da Silva
Complex Internal Rearrangement Processes Triggered By Electron Transfer To Acetic Acid, Paulo Limao-Vieira, G Meneses, T Cunha, A. Gil, M Calhorda, Gustavo Garcia, F. Ferreira Da Silva
Faculty of Engineering and Information Sciences - Papers: Part A
We present negative ion formation from collisions of 100 eV neutral potassium atoms with acetic acid (CH3COOH) and its deuterated analogue molecules (CH3COOD, CD3COOH). From the negative ion time-of-flight (TOF) mass spectra, OH- is the main fragment detected accounting on average for more than 25% of the total anion yield. The complex internal rearrangement processes triggered by electron transfer to acetic acid have been evaluated with the help of theoretical calculations at the DFT levels explaining the fragmentation channel yielding OH-.
Novel Experimental Setup For Time-Of-Flight Mass Spectrometry Ion Detection In Collisions Of Anionic Species With Neutral Gas-Phase Molecular Targets, J C. Oller, L Ellis-Gibbings, F Ferreira Da Silva, Paulo Limao-Vieira, Gustavo Garcia
Novel Experimental Setup For Time-Of-Flight Mass Spectrometry Ion Detection In Collisions Of Anionic Species With Neutral Gas-Phase Molecular Targets, J C. Oller, L Ellis-Gibbings, F Ferreira Da Silva, Paulo Limao-Vieira, Gustavo Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
We report a novel experimental setup for studying collision induced products resulting from the interaction of anionic beams with a neutral gas-phase molecular target. The precursor projectile was admitted into vacuum through a commercial pulsed valve, with the anionic beam produced in a hollow cathode discharge-induced plasma, and guided to the interaction region by a set of deflecting plates where it was made to interact with the target beam. Depending on the collision energy regime, negative and positive species can be formed in the collision region and ions were time-of-flight (TOF) mass-analysed. Here, we present data on O-2 precursor projectile, …
Simulink Model For Examining Dynamic Interactions Involving Electro-Mechanical Oscillations In Distribution Systems, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi
Simulink Model For Examining Dynamic Interactions Involving Electro-Mechanical Oscillations In Distribution Systems, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi
Faculty of Engineering and Information Sciences - Papers: Part A
In Australian medium voltage (MV) distribution networks, the majority of embedded local generation (LG) uses synchronous machine based technology. LG units with a synchronous generator can easily be dispatched and controlled to provide or absorb reactive power and thereby locally supporting the system voltage and increasing the voltage stability margin. The fast response from a synchronous machine based LG unit exciter will ensure fast voltage recovery. This will significantly improve the transient voltage stability. Also, the synchronous machine based LG units can provide inertial support to the system. Furthermore, some of these LG technologies work as standby power supplies all …
Influence Of The Vibration Of Large-Scale Wind Turbine Blade On The Aerodynamic Load, Xiong Liu, Cheng Lu, Shi Liang, Ajit R. Godbole, Yan Chen
Influence Of The Vibration Of Large-Scale Wind Turbine Blade On The Aerodynamic Load, Xiong Liu, Cheng Lu, Shi Liang, Ajit R. Godbole, Yan Chen
Faculty of Engineering and Information Sciences - Papers: Part A
The blades of a large wind turbine are subjected to significant vibrations during operation. The vibrations will impact the dynamic flow field around the blade and consequently alter the aerodynamic forces. In order to better understand the influence of blade vibrations on the aerodynamic loads, the dynamic stall characteristics of an S809 airfoil undergoing various types of motion were investigated using Computational Fluid Dynamics (CFD) techniques. Simulation results indicated that the in-plane and out-of-plane translational motions of the airfoil affect the aerodynamic forces significantly. Furthermore, the influence of vibrations on the aerodynamic loading on the blade of a 5 MW …
Effect Of Heat Input On Stellite 6 Coatings On A Medium Carbon Steel Substrate By Laser Cladding, Alain Kusmoko, Druce P. Dunne, Huijun Li
Effect Of Heat Input On Stellite 6 Coatings On A Medium Carbon Steel Substrate By Laser Cladding, Alain Kusmoko, Druce P. Dunne, Huijun Li
Faculty of Engineering and Information Sciences - Papers: Part A
Stellite 6 was deposited by laser cladding on a medium carbon steel substrate (MS) with energy inputs of 1. kW (MS 1) and 1.8. kW (MS 1.8). The chemical compositions and microstructures of these coatings were characterized by atomic absorption spectroscopy, optical microscopy and scanning electron microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was assessed using a pin-on-plate (reciprocating) wear testing machine. The results indicated less cracking and pore development for Stellite 6 coatings applied to the medium carbon steel substrate with the lower heat input (MS 1). Moreover, the Stellite coating …
Dynamic Stall Simulation Of Wind Turbine Airfoils, Xiong Liu, Shi Liang, Yan Chen, Shi Qiang Zhang, Chun Chen
Dynamic Stall Simulation Of Wind Turbine Airfoils, Xiong Liu, Shi Liang, Yan Chen, Shi Qiang Zhang, Chun Chen
Faculty of Engineering and Information Sciences - Papers: Part A
Based on the Beddoes-Leishman (B-L) semi-empirical dynamic stall model, the dynamic stall characteristics of wind turbine airfoils were studied through the analysis of attached flows, separated flows and dynamic vortices. According to the operating conditions of wind turbine airfoils, the method for evaluating dynamic stall coefficients associated with the separated flows and dynamic vortices in the B-L model was amended. The amended model was also extended to produce transient aerodynamic force coefficients over the entire range of possible angles of attack. The lift, drag and pitch moment coefficients of wind turbine airfoils S809 and NACA 4415 during dynamic stall were …
Qualitative Analysis Of The Use Of Building Performance Simulation In The Australian Retrofitting Industry, Daniel J. Daly, Paul Cooper, Zhenjun Ma
Qualitative Analysis Of The Use Of Building Performance Simulation In The Australian Retrofitting Industry, Daniel J. Daly, Paul Cooper, Zhenjun Ma
Faculty of Engineering and Information Sciences - Papers: Part A
Building Performance Simulation (BPS) is a key tool in the existing building enerfy retrofit optimizaiton process, allowing a user to predict energy savings from upgrades. However, little research exists into how BPS is being employed in commercial settings. This paper reports on a qualitative study which examined the use of BPS in the Australian commercial building retrofitting industry.
Hybrid Model Predictive Control Of A Residential Hvac System With Pvt Energy Generation And Pcm Thermal Storage, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Duane A. Robinson
Hybrid Model Predictive Control Of A Residential Hvac System With Pvt Energy Generation And Pcm Thermal Storage, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Duane A. Robinson
Faculty of Engineering and Information Sciences - Papers: Part A
This paper describes an experimental investigation into the performance of a Hybrid Model Predictive Control (HMPC) system implemented to control a novel solar-assisted HVAC system servicing the Team UOW Solar Decathlon house, the overall winner of the Solar Decathlon China 2013 competition. This HVAC system consists of an air-based photovoltaic thermal (PVT) collector and a phase change material (PCM) thermal store integrated with a conventional ducted reverse-cycle heat pump system. The system was designed for operation during both winter and summer, using daytime solar radiation and night sky radiative cooling to increase the energy efficiency of the air-conditioning system. The …
Understanding Phase Transformations In Steels Using Modern Electron Microscopy Techniques, Elena V. Pereloma, Ahmed A. Saleh, Hendrik T. Spanke, Fayez Al-Harbi, Azdiar A. Gazder
Understanding Phase Transformations In Steels Using Modern Electron Microscopy Techniques, Elena V. Pereloma, Ahmed A. Saleh, Hendrik T. Spanke, Fayez Al-Harbi, Azdiar A. Gazder
Faculty of Engineering and Information Sciences - Papers: Part A
The advantages and limitations of electron back-scattering diffraction coupled with energy dispersive X-ray spectroscopy and of transmission Kikuchi diffraction in relation to the in-depth characterisation of steel microstructures containing phases with similar lattice parameters and/or precipitates are discussed. An in-house developed EBSD map post-processing methodology provided insights into the mechanisms of bainite formation.
Investigation Of Oxide Scale On Ferritic Stainless Steel B445j1m And Its Tribological Effect In Hot Rolling, Xiawei Cheng, Zhengyi Jiang, Jingwei Zhao, Dongbin Wei, Liang Hao, Jianguo Peng, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
Investigation Of Oxide Scale On Ferritic Stainless Steel B445j1m And Its Tribological Effect In Hot Rolling, Xiawei Cheng, Zhengyi Jiang, Jingwei Zhao, Dongbin Wei, Liang Hao, Jianguo Peng, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
Faculty of Engineering and Information Sciences - Papers: Part A
Severe sticking occurs in the hot rolling of ferritic stainless steel B445J1M. The characteristics of the oxide scale on the steel in hot rolling are associated with this phenomenon. The tensile failure of the oxide scale formed on the steel B445J1M was investigated by using a Gleeble 3500 thermo-mechanical simulator over temperature range from 1000 to 1150°C in humid air. Two passes hot rolling were carried out on a 2-high Hille 100 experimental rolling mill. The results show that the temperature is a significant factor for the formed thickness of the oxide scale and its failure in tensile stress. On …
A New Mixing Technique For Solidifier And Dredged Fill In Coastal Area, Wenhui Shi, Qingsheng Chen, Sanjay Nimbalkar, Wenbai Liu
A New Mixing Technique For Solidifier And Dredged Fill In Coastal Area, Wenhui Shi, Qingsheng Chen, Sanjay Nimbalkar, Wenbai Liu
Faculty of Engineering and Information Sciences - Papers: Part A
One of the major drawbacks of the conventional method of land reclamation, which involves mixing cement with the dredged soils at the disposal site, is the high cost associated with the manufacturing and transportation. In this study, a new solidified dredged fill (SDF) technique and a new additive is proposed and their applications into practice are discussed. Unlike the conventional approach, the dredged marine soils were mixed with the solidifiers using a new designed mixing technique prior to its transport to site, which could significantly reduce the cost of site machinery and effectively reclaim land with adequate engineering properties necessary …
Explosive Breaching Of Walls With Contact Charges: Theory And Applications, Alex Remennikov, Igor Mentus, Brian Uy
Explosive Breaching Of Walls With Contact Charges: Theory And Applications, Alex Remennikov, Igor Mentus, Brian Uy
Faculty of Engineering and Information Sciences - Papers: Part A
Breaching activities are required for military operations in urban environment and for firefighters in emergency situations for saving lives. Explosive wall breaching is a key capability in military operations in urban terrain environments where the close proximity of urban structures significantly restricts the use of large demolition charges. Explosive breaching is also used by special operations groups as a means to gain entry into a structure where conventional breaching methods are not sufficient or the emergency situation requires immediate entry to save lives. This paper develops an analytical model for the explosive breaching of protective targets such as concrete and …
Modelling The Performance Of A Permeable Reactive Barrier Utilised To Reduce The Risk Of Acidic Groundwater In The Shoalhaven Floodplain, U Pathirage, B Indraratna
Modelling The Performance Of A Permeable Reactive Barrier Utilised To Reduce The Risk Of Acidic Groundwater In The Shoalhaven Floodplain, U Pathirage, B Indraratna
Faculty of Engineering and Information Sciences - Papers: Part A
Acidic groundwater generated from acid sulfate soil (ASS) usually carries high concentrations of aluminium (Al) and iron (Fe), which create unfavourable conditions to living habitat. The ASS research team at the University of Wollongong, Australia implemented an innovative geotechnical engineering technique for the remediation of acidic groundwater through a permeable reactive barrier (PRB) using recycled concrete aggregates as the reactive material. This PRB was installed at the Shoalhaven Floodplain, southeast New South Wales (NSW), Australia in October 2006 and has proved effective in neutralisation of groundwater by increasing the pH from 3.6 to 7 and removing 99% of Al and …
A Partially Drained Model For Soft Soils Under Cyclic Loading Considering Cyclic Parameter Degradation, Buddhima Indraratna, Jing Ni, Cholachat Rujikiatkamjorn, Rui Zhong
A Partially Drained Model For Soft Soils Under Cyclic Loading Considering Cyclic Parameter Degradation, Buddhima Indraratna, Jing Ni, Cholachat Rujikiatkamjorn, Rui Zhong
Faculty of Engineering and Information Sciences - Papers: Part A
Cyclic loading induced foundation instabilities including loss of bearing capacity and excessive plastic deformation of the subgrade are among the major concerns for the design and construction of transport infrastructure. There were limited studies on the modelling of cyclic loading of soft soils due to its complexities compared to static loading. In this study, a model for soft clays under partially drained condition subject to cyclic triaxial loading has been developed based on the Modified Cam-clay theory. The yield surface contraction for elastic unloading was governed by two additional cyclic degradation parameters to the modified Cam-clay model. This model was …
Evaluation Of A Partial Ring Design For The Insert Spect/Mri System, Kell Erlandsson, Debora Slavado, Alexandre B. Bousse, Brian F. Hutton
Evaluation Of A Partial Ring Design For The Insert Spect/Mri System, Kell Erlandsson, Debora Slavado, Alexandre B. Bousse, Brian F. Hutton
Faculty of Engineering and Information Sciences - Papers: Part A
The aim of the INSERT project is to develop a SPECT insert for a commercial MRI system, for performing simultaneous SPECT/MRI brain studies in humans. We have previously investigated various design options for the detector system, based on a complete ring of detectors. We are now considering a partial ring, due to space limitations. We have investigated the degradation in image quality with a partial ring as compared to a full ring, and the possibility of addressing the limitations by utilising MRI data during reconstruction. Noise-free data were generated by forward-projecting a cylindrical phantom with spherical inserts for a full-ring …
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
Faculty of Engineering and Information Sciences - Papers: Part A
BACKGROUND OR CONTEXT Teamwork is an integral component of any engineering degree, but students often have difficulty organising team meetings outside of class times due to discrepancies in their individual study timetables as well as their family and work commitments. Rich-media synchronous online technologies such as video/web conferencing and virtual worlds can be used to help address this problem by enabling anyplace, anytime interaction, while at the same time mirroring the communication modes students will encounter in their future workplaces. However, not much is known about how these technologies compare with one another for facilitating different types of collaborative learning …
Relationship Between Learning In The Engineering Laboratory And Student Evaluations, Sasha Nikolic, Thomas F. Suesse, Thomas Goldfinch, Timothy J. Mccarthy
Relationship Between Learning In The Engineering Laboratory And Student Evaluations, Sasha Nikolic, Thomas F. Suesse, Thomas Goldfinch, Timothy J. Mccarthy
Faculty of Engineering and Information Sciences - Papers: Part A
BACKGROUND OR CONTEXT This study is built upon previous research that developed an instrument to measure the learning objectives of the laboratory across the cognitive, psychomotor and affective domains with research that investigated student evaluations of sessional laboratory demonstrators, laboratory experiments and facilities. This research highlighted the importance of laboratory work in engineering education, and the need to improve our understanding of how learning occurs in the laboratory. PURPOSE OR GOAL Student evaluations are heavily used in higher education, and a greater understanding is needed on how these evaluations relate to learning. APPROACH An instrument used to measure learning in …