Social and Behavioral Sciences Commons^™

Membership Encryption And Its Applications, Fuchun Guo, Yi Mu, Willy Susilo, Vijay Varadharajan

Faculty of Engineering and Information Sciences - Papers: Part A

We propose a new encryption primitive called Membership Encryption. Let P(G) be a privacy-preserving token on a group attribute/identity G, such that given P(G) it is hard to know the attributes in G. In this membership encryption, if an encryption takes as input an attribute A and the token P(G) , the decryption requires holding the membership A ∈ G, i.e., A belongs to this group attribute. Membership encryption is applicable in constructing membership proof A∈P(G) with privacy preserving on group attribute and the membership. Membership encryption can be also utilized to construct an efficient two-round K-out-of-N oblivious transfer protocol. …

Dm Model Transformations Framework, S Othman, G Beydoun, Rodney Clarke, S Opper

Faculty of Engineering and Information Sciences - Papers: Part A

Metamodelling produces a 'metamodel' capable of generalizing the domain. A metamodel gathers all domain concepts and their relationships. It enables partitioning a domain problem into sub-problems. Decision makers can then develop a variety of domain solutions models based on mixing and matching solutions for sub-problems indentified using the metamodel. A repository of domain knowledge structured using the metamodel would allow the transformation of models generated from a higher level to a lower level according to scope of the problem on hand. In this paper, we reveal how a process of mixing and matching disaster management actions can be accomplished using …

Ebsd Observations Of Recrystallisation And Tensile Deformation In Twinning Induced Plasticity Steel, Ahmed A. Saleh, Azdiar A. Gazder, Elena Pereloma

Faculty of Engineering and Information Sciences - Papers: Part A

The microstructure evolution of cold-rolled and isochronally annealed Fe-24Mn-3Al-2Si-1Ni-0.06C twinning induced plasticity steel was investigated by electron back-scattering diffraction (EBSD). Deformation behaviour of a fully recrystallised sample was tracked in a selected area as a function of the true strain using a combination of interrupted tensile testing and EBSD. The results show that the cold rolled microstructure contained a large fraction of primary and secondary twins as well as remnants of annealing twins carried over from the prior hot rolling stage. A novel deconstruction technique was applied to a partially recrystallised sample in order to separate the microstructure into deformed, …

Incremental Service Level Agreements Violation Handling With Time Impact Analysis, Azlan Ismail, Jun Yan, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

This research addresses a critical issue of service level agreement (SLA) violation handling, i.e., time constraint violation related to service-based systems (SBS). Whenever an SLA violation occurs to a service, it can potentially impact dependent services, leading to unreliable SBS. Therefore, an SLA violation handling support is much required to produce a robust and adaptive SBS. There are several approaches to realizing exceptions and faults handling support for SBS, focusing on the detection stage, the analysis stage, and the resolution stage. However, the current works have not considered the handling strategy that takes the impact information into account to reduce …

Controllable Ring Signatures And Its Application To E-Prosecution, Wei Gao, Guilin Wang, Xueli Wang, Dongqing Xie

Faculty of Engineering and Information Sciences - Papers: Part A

This paper introduces a new concept called controllable ring signature which is ring signature with additional properties as follow. (1) Anonymous identifica-tion: by an anonymous identification protocol, the real signer can anonymously prove his authorship of the ring signature to the verifier. And this proof is non-transferable. (2) Linkable signature: the real signer can generate an anonymous signature such that every one can verify whether both this anonymous signature and the ring signature are generated by the same anonymous signer. (3) Convertibility: the real signer can convert a ring signature into an ordinary signature by revealing the secret information about …

Efficiency And Equity Of Speed Limits In Transportation Networks, Shuaian Wang

Faculty of Engineering and Information Sciences - Papers: Part A

This paper examines the impact of speed limits on network efficiency, in terms of total travel time of all road users, and equity among road users from different origin-destination (OD) pairs, in terms of the change of travel time after imposing a speed limit scheme. We find that after imposing a speed limit scheme, the total travel time of all road users may decrease or increase; road users of some OD pairs may experience longer travel time, while other OD pairs may have shorter travel time. In view of the importance of speed limits on network efficiency and equity, we …

The Strategic Role Of Engineering Asset Management, Khaled O. El-Akruti, Richard Dwight, Tieling Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

The current concept of an asset management (AM) system focuses on the lifecycle of engineered assets and little has been done in the literature on its link to organizational strategy. In this paper, the AM system′s position within an organizational structure and its role in competitive strategy has been explored. Two case studies involving AM have been analyzed using a proposed framework which is comprised of a set of planning and control activities maintaining a control mechanism and a relationship with the strategy-making process. It is argued that the AM system structure and the mechanism play a key role in …

A Novel Approach To Investigate Surface Roughness Evolution In Asymmetric Rolling Based On Three Dimensional Real Surface, H Xie, K Manabe, Z Y. Jiang

Faculty of Engineering and Information Sciences - Papers: Part A

Surface roughness affects the friction behaviour, stress distribution and surface quality; moreover this influence is more significant when scaling down the strip size. A novel approach has been proposed to investigate the surface roughness in asymmetric rolling based on Finite Element Analysis (FEA). Evolution of asperity flattening, contact area ratio and surface roughness is investigated under various simulation rolling conditions. The model reviewed numerical solutions for real surfaces with asperities of arbitrary shape and varying size and height distributions. The rolling characterization has also been identified for asymmetric rolling. The difference of change in surface roughness for upper and lower …

Do We Have The Reliable Data? An Exploration Of Data Quality For Aids Information System In China, Hong Chen, Ping Yu, Ning Wang

Faculty of Engineering and Information Sciences - Papers: Part A

A national AIDS program evaluation system has been applied to the ranking of the performance of involved public health organizations in China since 2007. The system provides quantitative performance comparison information based on automatic mining of the data stored in a unified web-based national information system, China AIDS Comprehensive Response Information Management System (the CRIMS). Hence, the quality of the AIDS program evaluation system is directly related to the data quality in the CRIMS. This study aims to evaluate the performance of the AIDS program evaluation system. The research method is qualitative interview of public health practitioners in Jiangxi Province. …

Detecting Vmat Delivery Errors: A Study On The Sensitivity Of The Arccheck-3d Electronic Dosimeter, S Arumugam, A Xing, G Goozee, L Holloway

Faculty of Engineering and Information Sciences - Papers: Part A

The sensitivity of the ArcCHECK 3D dosimeter in detecting VMAT delivery errors has been investigated. Dose and leaf positional errors of different magnitudes were introduced to whole arc and individual control points (CPs) of a simple open arc VMAT plan. The error introduced and error free plans were delivered and measured using the ArcCHECK device. The measured doses were compared against the treatment planning system calculated doses using gamma criteria with 2 percent 2mm and 3 percent 3mm tolerance levels. ArcCHECK effectively detected the dose errors resulting from MLC leaf positioning errors in limited CPs and Whole arc. For errors …

Clinical Validation Of An In-House Epid Dosimetry System For Imrt Qa At The Prince Of Wales Hospital, M Tyler, P Vial, P Metcalfe, S Downes

Faculty of Engineering and Information Sciences - Papers: Part A

In this study a simple method using standard flood-field corrected Electronic Portal Imaging Device (EPID) images for routine Intensity Modulated Radiation Therapy (IMRT) Quality Assurance (QA) was investigated. The EPID QA system was designed and tested on a Siemens Oncor Impression linear accelerator with an OptiVue 1000ST EPID panel (Siemens Medical Solutions USA, Inc, USA) and an Elekta Axesse linear accelerator with an iViewGT EPID (Elekta AB, Sweden) for 6 and 10 MV IMRT fields with Step-and-Shoot and dynamic-MLC delivery. Two different planning systems were used for patient IMRT field generation for comparison with the measured EPID fluences. All measured …

Total Electron-Scattering Cross Sections Of Pyrimidine, Woon Yong Baek, A Arndt, Marion Bug, M Wang

Faculty of Engineering and Information Sciences - Papers: Part A

Total electron-scattering cross sections of pyrimidine, the basic component for the nucleic bases cytosine and thymine, were measured for electron energies from 5 eV to 1 keV using the linear transmission method. The measured results were compared to semiempirical data obtained by means of the additivity rule and to experimental data for benzene since it has a similar ring structure and the same number of valence electrons as pyrimidine. Furthermore, integral elastic and inelastic electron-scattering cross sections of pyrimidine were calculated by applying the spherical complex optical potential model. The sum of both cross sections agrees reasonably well with the …

Application Of Multiple Objective Particle Swarm Optimisation In The Design Of Damaged Offshore Mooring Systems, Zhuo Wang, Timothy J. Mccarthy, M Neaz Sheikh

Faculty of Engineering and Information Sciences - Papers: Part A

The offshore hydrocarbon industry operates in more hostile environments as more of marginal fields become economically viable. This means that more floating production systems and economical mooring systems will be needed. With this increase in the use of marginal fields goes the need to re-use vessels and moorings. Floating production systems, such as FPSO's, need to survive extreme events and extreme damage conditions. When one mooring line is damaged, the remaining ones must be sufficient to avoid a complete failure and still protect critical components such as the riser. This paper looks into applying an evolutionary optimisation technique, namely multiple …

An Evaluation Of Thermal Earth Observation For Characterizing Urban Heatwave Event Dynamics Using The Urban Heat Island Intensity Metric, Tomas Holderness, Stuart Barr, Richard Dawson, Jim Hall

Faculty of Engineering and Information Sciences - Papers: Part A

Urban areas have a high sensitivity to extreme temperature events such as heatwaves due to increased absorption and re-radiation of thermal energy from man-made materials as well as anthropogenic heat outputs. Variations in urban form, land use, and surface cover result in spatial variability in temperatures across urban areas, meaning that exposure to extreme events is variable at the sub-city scale. Such variability must be quantified in order to better understand urban temperature interactions and identify areas with the greatest potential exposure to extreme heatwave events. Earth observed data offer a spatially complete and homogenous data source to supplement observations …

Dynamic Of Negative Ions In Potassium-D-Ribose Collisions, D Almeida, F Ferreira Da Silva, G Garcia, P Limao-Vieira

Faculty of Engineering and Information Sciences - Papers: Part A

We present negative ion formation from collisions of neutral potassium atoms with D-ribose (C5H10O5), the sugar unit in the DNA/RNA molecule. From the negative ion time-of-flight (TOF) mass spectra, OH− is the main fragment detected in the collision range 50–100 eV accounting on average for 50% of the total anion yield. Prominence is also given to the rich fragmentation pattern observed with special attention to O− (16 m/z) formation. These results are in sharp contrast to dissociative electron attachment experiments. The TOF mass spectra assignments show that these channels are also observed, albeit with a much lower relative intensity. Branching …

Synthesis Of Mn3o4-Encapsulated Graphene Sheet Nanocomposites Via A Facile, Fast Microwave Hydrothermal Method And Their Supercapacitive Behaviour, Li Li, Kuok Hau Seng, Zhixin Chen, Hua-Kun Liu, Ivan P. Nevirkovets, Zaiping Guo

Faculty of Engineering and Information Sciences - Papers: Part A

Well-crystallized Mn3O4-anchored reduced graphene oxide (rGO) nanocomposites have been successfully synthesized via a facile, effective, energy-saving, and scalable microwave hydrothermal technique for potential application as supercapacitor material. Integrating these nanostructures resulted in a strong synergistic effect between the two materials, consequently leading to a hybrid composite with higher specific capacitance compared to the bare Mn3O4 nanoparticles. The results from different sorts of characterization indicate that the Mn3O4 particles were deposited and anchored on graphene sheets. The capacitance value of the rGO(31.6%)–Mn3O4 nanocomposite reached 153 F/g, much higher than that of the bare Mn3O4 (87 F/g) at a scan rate of …

Analytical Solution For Interaction Forces In Rc Beams Strengthened With Nsm Rectangular Bars, S S. Zhang, J G. Teng

Faculty of Engineering and Information Sciences - Papers: Part A

The flexural performance of an RC beam can be improved using the near-surface mounted (NSM) FRP strengthening technique. In such FRP-strengthened RC beams, debonding failure at the two bar ends may occur due to high interaction forces in the bar-end regions between the RC beam and the FRP bars. This paper presents a theoretical investigation into these interaction forces in RC beams strengthened with NSM FRP rectangular bars. By introducing and defining two interfacial stiffness parameters, an analytical solution for the tangential and the normal interaction forces is first obtained as an extension of the analytical solution developed by Smith …

Effect Of The Austenitising Heat Treatment On The Microstructure And Hardness Of Martensitic Stainless Steel Aisi 420, Lilian D. Barlow, Madeleine Du Toit

Faculty of Engineering and Information Sciences - Papers: Part A

The effect of austenitizing on the microstructure and hardness of two martensitic stainless steels was examined with the aim of supplying heat-treatment guidelines to the user that will ensure a martensitic structure with minimal retained austenite, evenly dispersed carbides and a hardness of between 610 and 740 HV (Vickers hardness) after quenching and tempering. The steels examined during the course of this examination conform in composition to medium-carbon AISI 420 martensitic stainless steel, except for the addition of 0.13% vanadium and 0.62% molybdenum to one of the alloys. Steel samples were austenitized at temperatures between 1000 and 1200 C, followed …

Self-Reported Practices, Attitudes And Levels Of Training Of Practitioners In The English Nhs Stop Smoking Services, Mairtin S. Mcdermott, Robert West, Leonie S. Brose, Andy Mcewen

Faculty of Engineering and Information Sciences - Papers: Part A

The primary aim of the current study is to investigate the self-reported practices, attitudes and levels of training of stop smoking practitioners (SSPs) working at the English National Health Service's (NHS) Stop Smoking Services (SSSs). A secondary aim was to investigate differences between 'Specialist' and 'Community' SSPs. An online survey was conducted with 484 SSPs. Most (94%) SSPs offered one-to-one appointments to smokers, only 43% always used the abrupt quit model and 30% reported ever recommending particular medication to clients. SSPs reported an average of 3.7 days training when starting work and 26% reported never observing an experienced practitioner before …

Translating Evidence-Based Guidelines Into Practice: A Survey Of Practices Of Commissioners And Managers Of The English Stop Smoking Services, Mairtin S. Mcdermott, Heather Thomson, Robert West, Jennifer A. M Kenyon, Andy Mcewen

Faculty of Engineering and Information Sciences - Papers: Part A

Background: The English National Health Service's (NHS) Stop Smoking Services (SSSs) constitute one of the most highly developed behavioural support programmes in the world. However, there is significant variation in success rates across the approximately 150 services, some of which may be due to variation in practice. This study aimed to assess these differences in practice.

Methods: Two online surveys were administered. All commissioners (people who purchase services for the NHS) and managers (those who run the services) of NHS SSSs in England were invited to participate. Items included details of current practices and services provided, what informed the …

Apocalypse Not: Doomsday Thinkers Of Oz Should Get Out More, Graham Harris

Faculty of Engineering and Information Sciences - Papers: Part A

I sometimes wonder what planet this country of ours is on. The environmental debate we are having seems to be in a parallel universe to the rest of the world. Having spent the last four years running one of Europe's biggest environmental research laboratories, the Lancaster Environment Centre, I find Australia strangely out of kilter. All I hear here is apocalyptic gloom and doom: either the planet is done for if we don't act, or the economy is done for if we do! We have a highly polarised debate and even more polarised reporting; with too much hand-wringing and head-banging …

Don't Wait For Sciene To 'Settle': Decide What Society Needs, Graham Harris

Faculty of Engineering and Information Sciences - Papers: Part A

If you listen to the debate between science and society in most of the West, you get one version or another of the linear model. Science comes first. When it is "settled", society will know what to do. This is as true in the climate debate as it is in innovation. First comes the "breakthrough" and then the widget gets commercialised. Much of the economic development of the West has been driven by this "knowledge based" worldview. It worked quite well when the problems were simple and the benefits easily captured - from steam engines to early antibiotics - but …

People Plus: Is Transhuman The Next Stage In Our Evolution?, Katina Michael

Faculty of Engineering and Information Sciences - Papers: Part A

Inviting artificial intelligence into our bodies has appeal - but it also carries certain risks. I have often wondered what it would be like to rid myself of a keyboard for data entry, and a computer screen for display. Some of my greatest moments of reflection are when I am in the car driving long distances, cooking in my kitchen, watching the kids play at the park, waiting for a doctor's appointment or on a plane thousands of metres above sea level. I have always been great at multitasking but at these times it is often not practical or convenient …

Australia's Hand Out Addicted Car Industry Needs Some Tough Love, Henry Ergas

Faculty of Engineering and Information Sciences - Papers: Part A

The Federal Government will contribute millions of dollars to Australian car manufacturers Holden and Ford in an effort to keep Australia's automotive sector afloat. The government will add $34 million to a $103 million rescue package for Ford's Victorian assembly plant that will see the facility remain open until at least 2016. The funding, which will be met by a grant from the Victorian Government, comes as Holden is reportedly negotiating with Canberra over co-investment to produce a new Commodore model in 2018. But should governments continue to bail out an industry that is lagging in Australia and internationally? University …

Self-Guided Bullets Won't Stuff Up, But What About The Grunts And Drones Firing Them?, Katina Michael

Faculty of Engineering and Information Sciences - Papers: Part A

At the beginning of this year Sandia Labs in the United States announced it had patented a design for a self-guided bullet that could help soldiers at war. The technology is expected to prevent the need for targeted air strikes that could kill innocent people while criminals take cover in their midst. This "super" self-guided bullet can hit laser-designated targets accurately to around 2,000 metres. An example of this capability can be found in the XM25 rifle. To rephrase the Cold War notion of "limited nuclear warfare", we could now say with these latest developments to the war-fighting repertoire that …

Effects Of Cultural Cognitive Styles On Users Evaluation Of Website Complexity, Tingru Cui, Xinwei Wang, Hock Hai Teo

Faculty of Engineering and Information Sciences - Papers: Part A

The internationalization of websites requires compelling navigation experience for users from diverse cultures. This research investigates the effects of cultural cognitive styles on user perception of website complexity and the subsequent influence on user satisfaction towards the website. More specifically, the website complexity is examined along three dimensions: component, coordinative, and dynamic. Laboratory experiments involving participants from China and United States were used to test the hypotheses. The results showed that the effect of objective complexity on perceived complexity is contingent on cultural cognitive styles. People with holistic and analytic cultural cognitive styles display different perceptions of website complexity. This …

Effect Of Gallium Doping And Ball Milling Process On The Thermoelectric Performance Of N-Type Zno, Priyanka Jood, Germanas Peleckis, Xiaolin Wang, S X. Dou

Faculty of Engineering and Information Sciences - Papers: Part A

We report a systematic investigation of the thermoelectric properties of n-type Ga-doped ZnO synthesized using different ball milling conditions. Samples fabricated by the high-energy ball milling resulted in a highly dense layered structure with randomly distributed voids. These samples measured the lowest room temperature thermal conductivity, i.e., 27 W/mK due to increased phonon scattering. Furthermore, the Ga:ZnO system showed a metal–semiconductor transition above 300 K with transition temperature decreasing with increasing doping level. Measurement of the activation energy revealed the presence of one donor level around 3.9–7.8 meV and a deeper donor level around 15.4–18.1 meV below the conduction band …

Teaching Monte Carlo Codes At University: Development Of A Geant4 Course For Students Of Schools Of Physics, Susanna Guatelli, Dean Cutajar, Anatoly B. Rosenfeld, Catherine Layton

Faculty of Engineering and Information Sciences - Papers: Part A

Nowadays, it is important that students of Schools of Physics include the study of Monte Carlo codes in their curriculum as these codes are widely used in research. At the School of Engineering Physics of the University of Wollongong, we designed and set in place a Geant4 course addressed to the Medical Physics domain. In this paper, we illustrate the main features of the course and its development since 2010. The design of this course maybe adopted to teach Geant4 or any other Monte Carlo code, and in general to teach complex software tools to students with limited computing background. …

Energy Storage For Renewable Energy, Saugato Mukerji

Faculty of Engineering and Information Sciences - Papers: Part A

Presented at All Energy Australia 2012 International Conference, Melbourne

Replication Of Polypyrrole With Photonic Structures From Butterfly Wings As Biosensor, Jie Tang, Shenmin Zhu, Zhixin Chen, Chuanliang Feng, Yanjun Shen, Fan Yao, Di Zhang, Won-Jin Moon, Deok-Min Song

Faculty of Engineering and Information Sciences - Papers: Part A

Polypyrrole (PPy) with photonic crystal structures were synthesized from Morpho butterfly wings using a two-step templating process. In the first step photonic crystal SiO2 butterfly wings were synthesized from Morpho butterfly wings and in the second step the SiO2 butterfly wings were used as templates for the replication of PPy butterfly wings using an in situ polymerization method. The SiO2 templates were then removed from the PPy butterfly wings using a HF solution. The hierarchical structures down to the nanometer level, especially the photonic crystal structures, were retained in the final PPy replicas, as evidenced directly by field-emission scanning electron …