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Articles 1381 - 1410 of 4868
Full-Text Articles in Physical Sciences and Mathematics
Electrically Conductive Coatings Of Nickel And Polypyrrole/Poly(2- Methoxyaniline-5-Sulfonic Acid) On Nylon Lycra® Textiles, B C. Kim, P C. Innis, Gordon G. Wallace, C T.J Low, F C. Walsh, W J. Cho, K H. Yu
Electrically Conductive Coatings Of Nickel And Polypyrrole/Poly(2- Methoxyaniline-5-Sulfonic Acid) On Nylon Lycra® Textiles, B C. Kim, P C. Innis, Gordon G. Wallace, C T.J Low, F C. Walsh, W J. Cho, K H. Yu
Australian Institute for Innovative Materials - Papers
Woven nylon Lycra® has been coated with finely-divided electroless nickel-phosphorus, polypyrrole and electroless nickel/polypyrrole to produce flexible and electrically conductive textiles. The coated textiles were tested for their electrochemical activity, electrical resistivity and resistivity in response to mechanical strain. Pre-dyeing the textile with poly(2-methoxyaniline-5-sulfonic acid) (PMAS) prior to electroless metallization by electroless nickel and via chemical polymerization of polypyrrole was found to be beneficial in enhancing the resultant coating as well as stabilizing surface resistance responses when exposed to a wide range of strain. The mass gain due to the nickel coating was found to increase linearly with deposition time. …
Unidirectional Suppression Of Hydrogen Oxidation On Oxidized Platinum Clusters, Yu Li, Jun Xing, Zong Chen, Zhen Li, Feng Tian, Li Zheng, Hai Wang, P Hu, Huijun Zhao, Huagui Yang
Unidirectional Suppression Of Hydrogen Oxidation On Oxidized Platinum Clusters, Yu Li, Jun Xing, Zong Chen, Zhen Li, Feng Tian, Li Zheng, Hai Wang, P Hu, Huijun Zhao, Huagui Yang
Australian Institute for Innovative Materials - Papers
Solar-driven water splitting to produce hydrogen may be an ideal solution for global energy and environment issues. Among the various photocatalytic systems, platinum has been widely used to co-catalyse the reduction of protons in water for hydrogen evolution. However, the undesirable hydrogen oxidation reaction can also be readily catalysed by metallic platinum, which limits the solar energy conversion efficiency in artificial photosynthesis. Here we report that the unidirectional suppression of hydrogen oxidation in photocatalytic water splitting can be fulfilled by controlling the valence state of platinum; this platinum-based cocatalyst in a higher oxidation state can act as an efficient hydrogen …
The Effects Of Fec (Fluoroethylene Carbonate) Electrolyte Additive On The Lithium Storage Properties Of Nio (Nickel Oxide) Nanocuboids, Kuok H. Seng, Li Li, Dapeng Chen, Zhixin Chen, Xiaolin Wang, Hua-Kun Liu, Zaiping Guo
The Effects Of Fec (Fluoroethylene Carbonate) Electrolyte Additive On The Lithium Storage Properties Of Nio (Nickel Oxide) Nanocuboids, Kuok H. Seng, Li Li, Dapeng Chen, Zhixin Chen, Xiaolin Wang, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Nanocuboid shaped NiO (nickel oxide) has been synthesized using an optical floating zone furnace. It was found that the nanocuboids exhibit single crystalline nature, and have clean and sharp edges. Furthermore, the NiO nanocuboids were tested for their electrochemical performances as anode material for LIBs (lithium-ion batteries) in a coin-type half cell. The effects of FEC (fluoroethylene carbonate) additive on the lithium storage performance were also investigated, which is the first of such studies for transition metal oxides. It was found that FEC has a positive effect on the cycling stability and also improves the rate performances of the nanocuboids. …
Surface And Biomolecular Forces Of Conducting Polymers, Michael J. Higgins, Gordon G. Wallace
Surface And Biomolecular Forces Of Conducting Polymers, Michael J. Higgins, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
In this review, we provide insight into the surface forces of conducting polymers, a class of intelligent materials that offer unique strategies for controlling biomolecular interactions in wide-ranging biomedical applications. Critical to the success of these applications is that the polymer interface is exposed to biological fluids whose interactions are controlled through the polymer surface chemistry and electrochemical switching of the surface properties. There is, however, little known about the intermolecular and surface forces that govern these interactions. Therefore, the purpose of this review is to more closely examine the forces that mediate interactions with biological entities, including forces such …
The Flux Pinning Mechanism, And Electrical And Magnetic Anisotropy In Fe1.04te0.6se0.4 Superconducting Single Crystal, Mahboobeh Shahbazi-Manshadi, Xiaolin Wang, S X. Dou, H Fang, C T. Lin
The Flux Pinning Mechanism, And Electrical And Magnetic Anisotropy In Fe1.04te0.6se0.4 Superconducting Single Crystal, Mahboobeh Shahbazi-Manshadi, Xiaolin Wang, S X. Dou, H Fang, C T. Lin
Australian Institute for Innovative Materials - Papers
The temperature and magnetic field dependences of the magnetization and critical current density of Fe1.04Te0.6Se0.4 single crystals have been investigated, and the flux pinning mechanism has been analysed. The normalized pinning force (fp Fp/F p,max) vs. h(H/Hirr) curves, are scaled using the Dew-Hughes theory, f(h) ≈ hp(1 - h)q with p 1.35 and q 3.06. The angular dependence of the resistivity under different magnetic fields shows a dip-like structure, below the superconducting transition temperature. The anisotropic value of 2 was obtained using Ginzburg-Landau theory.
Identity-Based Traitor Tracing With Short Private Key And Short Ciphertext, Fuchun Guo, Yi Mu, Willy Susilo
Identity-Based Traitor Tracing With Short Private Key And Short Ciphertext, Fuchun Guo, Yi Mu, Willy Susilo
Faculty of Informatics - Papers (Archive)
Identity-based traitor tracing (IBTT) scheme can be utilized to identify a private (decryption) key of any identity that is illegally used in an identity-based broadcast encryption scheme. In PKC'07, Abdalla et al. proposed the first IBTT construction with short private key. In CCS'08, Boneh and Naor proposed a public-key traitor tracing, which can be extended to IBTT with short ciphertext. With a further exploration, in this paper, we propose the first IBTT with short private key and short ciphertext. Private key and ciphertext are both order of O(l 1+l 2), where l 1 is the bit length of codeword of …
Privacy Issues And Solutions In Social Network Sites, Xi Chen, Katina Michael
Privacy Issues And Solutions In Social Network Sites, Xi Chen, Katina Michael
Associate Professor Katina Michael
The boom of the internet and the explosion of new technologies have brought with them new challenges and thus new connotations of privacy. Clearly, when people deal with e-government and e-business, they do not only need the right to be let alone, but also to be let in secret. Not only do they need freedom of movement, but also to be assured of the secrecy of their information. Solove [6] has critiqued traditional definitions of privacy and argued that they do not address privacy issues created by new online technologies. Austin [7] also asserts: “[w]e do need to sharpen and …
Indian Millennials: Are Microchip Implants A More Secure Technology For Identification And Access Control?, Christine Perakslis, Katina Michael
Indian Millennials: Are Microchip Implants A More Secure Technology For Identification And Access Control?, Christine Perakslis, Katina Michael
Associate Professor Katina Michael
This mixed methods study with a sequential explanatory strategy explored qualitatively the statistically significant quantitative findings relative to Indian respondents’ perceptions about RFID (radio frequency identification) transponders implanted into the human body. In the first analysis phase of the study, there was a significant chi-square analysis reported (χ2 = 56.64, df = 3, p = .000) relative to the perception of small business owners (N = 453) that implanted chips are a more secure form of identification and/or access control in organizations and the respondents’ country of residence. Countries under study included Australia, India, the UK and US. The country …
Bryophyte Species Composition Over Moisture Gradients In The Windmill Islands, East Antarctica: Development Of A Baseline For Monitoring Climate Change Impacts, J Wasley, S A. Robinson, J D. Turnbull, D H. King, W Wanek, M Popp
Bryophyte Species Composition Over Moisture Gradients In The Windmill Islands, East Antarctica: Development Of A Baseline For Monitoring Climate Change Impacts, J Wasley, S A. Robinson, J D. Turnbull, D H. King, W Wanek, M Popp
Faculty of Science - Papers (Archive)
Extreme environmental conditions prevail on the Antarctic continent and limit plant diversity to cryptogamic communities, dominated by bryophytes and lichens. Even small abiotic shifts, associated with climate change, are likely to have pronounced impacts on these communities that currently exist at their physiological limit of survival. Changes to moisture availability, due to precipitation shifts or alterations to permanent snow reserves, will most likely cause greatest impact. In order to establish a baseline for determining the effect of climate change on continental Antarctic terrestrial communities and to better understand bryophyte species distributions in relation to moisture in a floristically important Antarctic …
Implementing Vertical And Horizontal Engineering Students' Integration And Assessment Of Consequence Academic Achievement, Sarim Al-Zubaidy, Nidhal Abdulaziz, Reza Dashtpour
Implementing Vertical And Horizontal Engineering Students' Integration And Assessment Of Consequence Academic Achievement, Sarim Al-Zubaidy, Nidhal Abdulaziz, Reza Dashtpour
Faculty of Informatics - Papers (Archive)
Recent scholarship references indicate that integration of the student body can result in an enhanced learning experience for students and also greater satisfaction. This paper reports the results of a case study whereby mechanical engineering students studying at a newly established branch campus in Dubai of a British university were exposed to vertical and horizontal integration. Different activities have been embedded to ensure that students integrated and worked together with their peers and colleagues at different levels. The implemented processes and practices led to improved academic achievements, which were better than those of a similar cohort of students where no …
The Value Of Government Mandated Location-Based Services In Emergencies In Australia, Anas Aloudat, Katina Michael, Roba Abbas, Mutaz Al-Debei
The Value Of Government Mandated Location-Based Services In Emergencies In Australia, Anas Aloudat, Katina Michael, Roba Abbas, Mutaz Al-Debei
Associate Professor Katina Michael
The adoption of mobile technologies for emergency management has the capacity to save lives. In Australia in February 2009, the Victorian Bushfires claimed 173 lives, the worst peace-time disaster in the nation’s history. The Australian government responded swiftly to the tragedy by going to tender for mobile applications that could be used during emergencies, such as mobile alerts and location services. These applications, which are becoming increasingly accurate with the evolution of positioning techniques, have the ability to deliver personalized information direct to the citizen during crises, complementing traditional broadcasting mediums like television and radio. Indeed governments have a responsibility …
The Isolation Of Bioactive Flavonoids From Jacaranda Obtusifolia H. B. K. Ssp. Rhombifolia (G. F. W. Meijer) Gentry, Sorachai Khamsan, Saisunee Liawruangrath, Aphiwat Teerawutkulrag, Stephen G. Pyne, Mary J. Garson, Boonsom Liawruangrath
The Isolation Of Bioactive Flavonoids From Jacaranda Obtusifolia H. B. K. Ssp. Rhombifolia (G. F. W. Meijer) Gentry, Sorachai Khamsan, Saisunee Liawruangrath, Aphiwat Teerawutkulrag, Stephen G. Pyne, Mary J. Garson, Boonsom Liawruangrath
Faculty of Science - Papers (Archive)
The paper describes the bioassay-guided isolation, structure elucidation and anticancer evaluation of five flavonoids (-)-liquiritigenin (1), (-)-neoliquiritin (2), isoliquiritigenin (3), isoliquiritin (4) and formononetin (5) from the twigs of Jacaranda obtusifolia H. B. K. ssp. rhombifolia (G. F. W. Meijer) Gentry. The structures were elucidated based on 1H, 13C NMR, comprehensive 2D NMR, MS analyses and comparison with previously reported spectral data. Compounds 1 and 3 were demonstrated to be inhibitory in vitro against NCI-H187 (small cell lung cancer) with IC50 values of 30.1 and 16.6 μg mL-1, respectively. The isolates were non-cytotoxic to Vero cells (African green monkey kidney).
Translocation Of The Eastern Bristlebird 1: Radio-Tracking Of Post-Release Movements, David Bain, Kris French, Jack Baker, Jean Clarke
Translocation Of The Eastern Bristlebird 1: Radio-Tracking Of Post-Release Movements, David Bain, Kris French, Jack Baker, Jean Clarke
Faculty of Science - Papers (Archive)
Translocating birds to a new area of habitat to restore or supplement depleted populations may pose a significant threat to the translocated individuals. While for many species, translocated individuals appear to move larger distances than resident animals, species with poor dispersal capacity may be restricted in movements and translocation methods may need to accommodate differences in movements to ensure success. In this study, designed to provide insights to inform our broader programme of translocations in New South Wales, Australia, we investigated post-release movements in the endangered, semi-flightless Eastern Bristlebird (Dasyornis brachypterus). We predicted that movements would be minimal, with few …
Manufacturing On The Move? Beyond The High Dollar In The Debate About Making Things In Australia - The Case Of The Australian Surfboard Industry - Ausccer Discussion Paper No. 2012/2, Andrew Warren, Chris Gibson
Manufacturing On The Move? Beyond The High Dollar In The Debate About Making Things In Australia - The Case Of The Australian Surfboard Industry - Ausccer Discussion Paper No. 2012/2, Andrew Warren, Chris Gibson
Faculty of Science - Papers (Archive)
In October 2011 surfboard manufacturer BASE abruptly closed its factory on the Gold Coast resulting in the direct loss of 50 jobs. A few days later, nearby D’Arcy Surfboards also announced it was shedding workers and downsizing from a state-of-the art purpose built factory into a backyard workshop. Each business exported surfboards internationally and employed some of Australia’s best known surfboard-makers. The troubles facing these workshops added to those brewing at the very same in Australia’s steel, aluminium, automotive and garment industries. With renewed public debate and media commentary on the future of manufacturing, we now face a crisis in …
Commentary On: Mann, Steve (2012): Wearable Computing, Katina Michael, M.G. Michael
Commentary On: Mann, Steve (2012): Wearable Computing, Katina Michael, M.G. Michael
Associate Professor Katina Michael
In Professor Steve Mann- inventor, physicist, engineer, mathematician, scientist, designer, developer, project director, filmmaker, artist, instrumentalist, author, photographer, actor, activist- we see so much of the paradigmatic classical Greek philosopher. I recall asking Steve if technology shaped society or society shaped technology. He replied along the lines that the question was superfluous. Steve instead pointed to praxis, from which all theory, lessons or skills stem, are practiced, embodied and realized. Steve has always been preoccupied by the application of his ideas into form. In this way too, he can be considered a modern day Leonardo Da Vinci.
Book Review: Securing The Cloud: Cloud Computer Security Techniques And Tactics, Katina Michael
Book Review: Securing The Cloud: Cloud Computer Security Techniques And Tactics, Katina Michael
Associate Professor Katina Michael
With so much buzz around Cloud Computing, books like this one written by Winkler are much in demand. Winkler’s experience in the computing business shines through and as readers we are spoiled with a great deal of useful strategic information- a jam packed almost 300 page volume on securing the cloud.
In Memoriam: Associate Professor Dr Elaine Lawrence, Katina Michael
In Memoriam: Associate Professor Dr Elaine Lawrence, Katina Michael
Associate Professor Katina Michael
Despite being a graduate of the rigorous Bachelor of Information Technology at the University of Technology, Sydney (UTS) in 1996, I was unfortunate in that I missed being taught by Associate Professor Elaine Lawrence who began working at UTS in 1990 as a Lecturer in Computing Science. Dr Lawrence became a senior lecturer in 2000, and subsequently an associate professor in 2006. Our paths crossed in 2002 when I was tasked to deliver a new course entitled “eBusiness Principles” in my first year of lecturing at the University of Wollongong, and after an initial scurry to find an adequate textbook, …
Process-Evaluation Of Tropospheric Humidity Simulated By General Circulation Models Using Water Vapor Isotopologues: 1. Comparison Between Models And Observations, Camille Risi, David Noone, John Worden, Christian Frankenberg, Gabriele Stiller, Michael Kiefer, Bernd Funke, Kaley Walker, Peter Bernath, Matthias Schneider, Debra Wunch, Vanessa Sherlock, Nicholas M. Deutscher, David W. Griffith, Paul O. Wennberg, Kimberly Strong, Dan Smale, Emmanuel Mahieu, Sabine Barthlott, Frank Hase, Omar Garcia, Justus Notholt, Thorsten Warneke, Geoffrey Toon, David Sayres, Sandrine Bony, Jeonghoon Lee, Derek Brown, Ryu Uemura, Christophe Sturm
Process-Evaluation Of Tropospheric Humidity Simulated By General Circulation Models Using Water Vapor Isotopologues: 1. Comparison Between Models And Observations, Camille Risi, David Noone, John Worden, Christian Frankenberg, Gabriele Stiller, Michael Kiefer, Bernd Funke, Kaley Walker, Peter Bernath, Matthias Schneider, Debra Wunch, Vanessa Sherlock, Nicholas M. Deutscher, David W. Griffith, Paul O. Wennberg, Kimberly Strong, Dan Smale, Emmanuel Mahieu, Sabine Barthlott, Frank Hase, Omar Garcia, Justus Notholt, Thorsten Warneke, Geoffrey Toon, David Sayres, Sandrine Bony, Jeonghoon Lee, Derek Brown, Ryu Uemura, Christophe Sturm
Faculty of Science - Papers (Archive)
[1] The goal of this study is to determine how H2O and HDO measurements in water vapor can be used to detect and diagnose biases in the representation of processes controlling tropospheric humidity in atmospheric general circulation models (GCMs). We analyze a large number of isotopic data sets (four satellite, sixteen ground-based remote-sensing, five surface in situ and three aircraft data sets) that are sensitive to different altitudes throughout the free troposphere. Despite significant differences between data sets, we identify some observed HDO/H2O characteristics that are robust across data sets and that can be used to evaluate models. We evaluate …
The Role Of Streptokinase As A Virulence Determinant Of Streptococcus Pyogenes - Potential For Therapeutic Targeting, Jason D. Mcarthur, Simon M. Cook, Carola Venturini, Mark J. Walker
The Role Of Streptokinase As A Virulence Determinant Of Streptococcus Pyogenes - Potential For Therapeutic Targeting, Jason D. Mcarthur, Simon M. Cook, Carola Venturini, Mark J. Walker
Faculty of Science - Papers (Archive)
Streptococcus pyogenes is a major human pathogen responsible for numerous diseases ranging from uncomplicated skin and throat infections to severe, life threatening invasive disease such as necrotising fasciitis and streptococcal toxic shock syndrome. These severe invasive infections progress rapidly and produce high rates of morbidity and mortality despite the implementation of aggressive treatment plans. The activation of plasminogen and the acquisition of plasmin activity at the bacterial cell surface is critical for the invasive pathogenesis of this organism. To facilitate this process, S. pyogenes secrete streptokinase, a potent plasminogen activating protein. Here, we describe the role of streptokinase in invasive …
Seed Bank Persistence And Climate Change, Mark K. J Ooi
Seed Bank Persistence And Climate Change, Mark K. J Ooi
Faculty of Science - Papers (Archive)
"The strong mechanistic relationship between climatic factors and seed dormancy and germination suggests that forecast climatic changes will significantly affect seed bank persistence. This review focuses on the potential impact of changing temperature, rainfall and fire regimes on the longevity of long-term persistent seed-banks. Currently, there are few studies investigating the mechanistic responses of demographic processes, such as seed-bank dynamics, to forecast climate change. However, from the work that has been published, several key points have been highlighted. First, increased air temperatures will produce significantly higher soil temperatures in open and sparsely vegetated habitats. Some evidence shows that this could …
Sousveillance And The Social Implications Of Point Of View Technologies In The Law Enforcement Sector, Katina Michael, M.G. Michael
Sousveillance And The Social Implications Of Point Of View Technologies In The Law Enforcement Sector, Katina Michael, M.G. Michael
Associate Professor Katina Michael
Policing today has become a high-tech affair; especially in the provision of incident event tracking and reporting systems increasingly being used to provide evidence in a court of law. These in-car video (ICV) and body worn recording systems are said to increase convictions and eliminate false claims made by defendants, providing documentary support to police officers and their associated actions in an incident. But today, new technologies such as smart phones equipped with cameras and global positioning system chipsets can also be found in the hands of the everyday citizen, used to capture everyday happenings and distributed to social networks …
Book Review: Security Risk Management: Building An Information Security Risk Management Program From The Ground Up, Katina Michael
Book Review: Security Risk Management: Building An Information Security Risk Management Program From The Ground Up, Katina Michael
Associate Professor Katina Michael
In an age of outsourcing tasks that are not considered to be a core competency of the business, organisations have often relied on external consultants for matters pertaining to security. In actual fact, most companies could have utilized existing skill-sets in-house to produce a security risk management program, if only they knew what steps to take, and how to go about it all. Evan Wheeler in his book on information security risk management does just that- he equips professionals tasked with security, with the thinking required to create a program that is more preoccupied with the complex strategic-level questions than …
Determinants Of Rfid Technology Adoption Intention In The Saudi Retail Industry: An Empirical Study, Salem Alqahtani, S. F. Wamba
Determinants Of Rfid Technology Adoption Intention In The Saudi Retail Industry: An Empirical Study, Salem Alqahtani, S. F. Wamba
Faculty of Informatics - Papers (Archive)
Drawing both on innovation diffusion theory and Radio frequency identification (RFID) technology, this paper assesses the influence of a set of determinants on the intention of Saudi Arabian retail firms to adopt RFID technology. In this study, a two-phase, multi-method approach was used. In the first phase, an interview-based case study was used, while in the second phase, we conducted a survey to gather data from 7 large retailers in Saudi Arabia. Our findings indicate that while the RFID relative advantage, the top management support and information intensity do not have any influence on the intention of Saudi Arabia retail …
Location Privacy Under Dire Threat As Uberveillance Stalks The Streets, Katina Michael, Roger Clarke
Location Privacy Under Dire Threat As Uberveillance Stalks The Streets, Katina Michael, Roger Clarke
Associate Professor Katina Michael
Location tracking and monitoring applications have proliferated with the arrival of smart phones that are equipped with onboard global positioning system (GPS) chipsets. It is now possible to locate a smart phone user down to 10 metres of accuracy on average. Innovators have been quick to capitalise on this emerging market by introducing novel pedestrian tracking technologies which can denote the geographic path of a mobile user. At the same time there is contention by law enforcement personnel over the need for a warrant process to track an individual in a public space. This paper considers the future of location …
Aged Care It In Australia-The Past, Present And Future, Ping Yu
Aged Care It In Australia-The Past, Present And Future, Ping Yu
Faculty of Informatics - Papers (Archive)
This paper reviews the development of aged care IT innovations in Australia in the past decade. It starts with a brief description of the establishment of the Aged Care eConnect project by the Commonwealth Department of Health and Ageing to promote aged care IT. This is followed by a snapshot of the aged care associations' and research groups' promotional activities. The roles of government, industry peak bodies, aged care providers, aged care IT application providers and researchers for the diffusion of aged care IT innovations are analysed.
Combining Outputs From The North American Regional Climate Change Assessment Program By Using A Bayesian Hierarchical Model, Emily L. Kang, Noel Cressie, Stephan R. Sain
Combining Outputs From The North American Regional Climate Change Assessment Program By Using A Bayesian Hierarchical Model, Emily L. Kang, Noel Cressie, Stephan R. Sain
Faculty of Informatics - Papers (Archive)
We investigate the 20-year-average boreal winter temperatures generated by an ensemble of six regional climate models (RCMs) in phase I of the North American Regional Climate Change Assessment Program. We use the long-run average (20-year integration) to smooth out variability and to capture the climate properties from the RCM outputs. We find that, although the RCMs capture the large-scale climate variation from coast to coast and from south to north similarly, their outputs can differ substantially in some regions. We propose a Bayesian hierarchical model to synthesize information from the ensemble of RCMs, and we construct a consensus climate signal …
New Constructions Of Osbe Schemes And Their Applications In Oblivious Access Control, Jinguang Han, Willy Susilo, Yi Mu, Jun Yan
New Constructions Of Osbe Schemes And Their Applications In Oblivious Access Control, Jinguang Han, Willy Susilo, Yi Mu, Jun Yan
Faculty of Informatics - Papers (Archive)
Oblivious signature-based envelope (OSBE) schemes have demonstrated their potential applications in the protection of users privacy and rights. In an OSBE protocol, an encrypted message can only be decrypted by the receiver who holds a valid signature on a public message, while the sender (encrypter) does not know whether the receiver has the signature or not. Our major contributions in this work lie in the following aspects. We improve the notion of OSBE so that a valid credential holder cannot share his/her credential with other users (i. e., all-or-nothing non-transferability). We clarify the relationship between one-round OSBE and identity-based encryption …
Grounding Locations Assessment Of Practical Power System, Nadheer Shalash, Ahmed M. Haidar, Abdul Sattar
Grounding Locations Assessment Of Practical Power System, Nadheer Shalash, Ahmed M. Haidar, Abdul Sattar
Faculty of Informatics - Papers (Archive)
Grounding Points (GPs) are installed in electrical power system to drive protective devices and accomplish the person- nel safety. The general grounding problem is to find the optimal locations of these points so that the security and reli- ability of power system can be improved. This paper presents a practical approach to find the optimal location of GPs based on the ratios of zero sequence reactance with positive sequence reactance (X0/X1), zero sequence resistance with positive sequence reactance (R0/X1) and Ground Fault Factor (GFF). The optimal values of these indicators were deter- mined by considering several scenarios of fault disturbances …
Perfect Ambiguous Optimistic Fair Exchange, Yang Wang, Man Ho Allen Au, Willy Susilo
Perfect Ambiguous Optimistic Fair Exchange, Yang Wang, Man Ho Allen Au, Willy Susilo
Faculty of Informatics - Papers (Archive)
Protocol for fair exchange of digital signatures is essential in many applications including contract signing, electronic commerce, or even peer-to-peer file sharing. In such a protocol, two parties, Alice and Bob, would like to exchange digital signatures on some messages in a fair way. It is known that a trusted arbitrator is necessary in the realization of such a protocol. We identify that in some scenarios, it is required that prior to the completion of the protocol, no observer should be able to tell whether Alice and Bob are conducting such an exchange. Consider the following scenario in which Apple …
An Experimental Determination Of Perceived Liveability In Sydney, Mohammad-Reza Namazi-Rad, Pascal Perez, Matthew Berryman, Francois Lamy
An Experimental Determination Of Perceived Liveability In Sydney, Mohammad-Reza Namazi-Rad, Pascal Perez, Matthew Berryman, Francois Lamy
Faculty of Informatics - Papers (Archive)
The term liveability is used to evaluate the quality of life in a region based on the surrounding physical environment and different location-based social elements. Having a reliable measurement of general well-being of individuals and societies can help the government and non-government organizations planning for better infrastructure. However, a variety of factors can impact the social perception of local environmental conditions, many of which are difficult to measure. This makes different liveability concepts quite challenging to be evaluated. In collaboration with the IRIS Research, we have conducted a Computer Assisted Telephone Interviewing (CATI) survey on perceived liveability. This measures the …