Computer Sciences Commons^™

Legal Issues Related To Accountable-Ehealth Systems In Australia, Randike Gajanayake, Bill Lane, Tony Iannella, Tony Sahama

Research outputs 2012

Information privacy requirements of patients and information requirements of healthcare providers (HCP) are competing concerns. Reaching a balance between these requirements have proven difficult but is crucial for the success of eHealth systems. The traditional approaches to information management have been preventive measures which either allow or deny access to information. We believe that this approach is inappropriate for a domain such as healthcare. We contend that introducing information accountability (IA) to eHealth systems can reach the aforementioned balance without the need for rigid information control. IA is a fairly new concept to computer science, hence, there are no unambiguously …

A Holistic Approach To Ehealth Security In Australia: Developing A National Ehealth Sercurity And Access Framework (Nesaf), Yvette Lejins, John Leitch

Research outputs 2012

The Australian ehealth landscape is confronted with new challenges for healthcare providers in appropriately managing and protecting personal health information. The vision of the National eHealth Security and Access Framework (NESAF) is to adopt a consistent approach to the application of health information security standards and provide better practice guidance in relation to eHealth specific security and access practices. The eHealth information security landscape has a number of unique attributes, many that are faced by other business that provide a service or products – but we see that there is no industry in Australia where such widespread changes in the …

Accountable-Ehealth Systems: The Next Step Forward For Privacy, Randike Gajanayake, Tony Iannella, Bill Lane, Tony Sahama

Research outputs 2012

EHealth systems promise enviable benefits and capabilities for healthcare, yet the technologies that make these capabilities possible brings with them undesirable drawback such as information security related threats which need to be appropriately addressed. Lurking in these threats are patient privacy concerns. Resolving these privacy concerns have proven to be difficult since they often conflict with information requirements of healthcare providers. It is important to achieve a proper balance between these requirements. We believe that information accountability can achieve this balance. In this paper we introduce accountable-eHealth systems. We will discuss how our designed protocols can successfully address the aforementioned …

An Exploratory Study Of The Implementation Of Electronic Health Records: A Two Country Comparison, Helen Cripps, Craig Standing, Vesna Prijatelj

Research outputs 2012

The adoption of electronic health records has been significantly slower in Australia than many European countries. This paper compares the implementation process in Australia with Slovenia, looking at the benefits, drawbacks and success factors of e-health implementation. The authors use case studies collected in each country to discuss issues around e-health implementation. Though Slovenia has progressed much further down the road of e-health the commonality of the experiences between both cases was striking.

Wikis: Transactive Memory Systems In Digital Form, Paul Jackson

Research outputs 2012

Wikis embed information about authors, tags, hyperlinks and other metadata into the information they create. Wiki functions use this metadata to provide pointers which allow users to track down, or be informed of, the information they need. In this paper we provide a firm theoretical conceptualization for this type of activity by showing how this metadata provides a digital foundation for a Transactive Memory System (TMS). TMS is a construct from group psychology which defines directory-based knowledge sharing processes to explain the phenomenon of "group mind". We analyzed the functions and data of two leading Wiki products to understand where …

Use Of Information And Communication Technology (Ict) Tools By Rural Famers In Ratnagiri District Of Maharashtra, India, Leisa Armstrong, N. Gandhi

Research outputs 2012

This study made an attitude assessment of farmers from the rural villages of Ratnagiri district of Maharashtra in the dissemination of agricultural information using Information and Communication technologies. A structured questionnaire and interviews were used to gather information on a number of aspects related to the use of ICT from randomly selected farmers from one Tehsil and key stakeholders (government officials and agricultural industry workers). Two different questionnaires were provided to farmers and key stakeholders. The questionnaire completed by the farmer participants sought general demographic data, education level and information concerning household income and their agricultural activities. Information related to …

Real-Time Evolutionary Learning Of Cooperative Predator-Prey Strategies, Mark Wittkamp, Luigi Barone, Philip Hingston, Lyndon While

Research outputs 2012

Despite games often being used as a testbed for new computational intelligence techniques, the majority of artificial intelligence in commercial games is scripted. This means that the computer agents are non-adaptive and often inherently exploitable because of it. In this paper, we describe a learning system designed for team strategy development in a real time multi-agent domain. We test our system in a prey and predators domain, evolving adaptive team strategies for the predators in real time against a single prey opponent. Our learning system works by continually training and updating the predator strategies, one at a time for a …

Science Or Experience; What Is More Relevant ?, Kenneth Fowle, Hadyn Green

Research outputs 2012

It is very important that when we use science to determine the validity of evidence or information that it is done in a manner that is acceptable to the scientific community and the legal community, but what happens when “experience” is used. The use of forensic practitioners to provide „expert‟ evidence and opinion must meet the Daubert/Frye and now Kumho tests. This paper will endeavour to demonstrate .what is best for a practitioner to have and what does the judiciary require for „expert‟ evidence to be accepted? Science and/or Experience, what is more relevant? Evidence and the Courts depend upon …

On The Effectiveness Of Intrusions Into Zigbee-Based Wireless Sensor Networks, Michael Johnstone, Jeremy Jarvis

Research outputs 2012

Wireless Sensor Networks are becoming popular as a means of collecting data by military organisations, public utilities, motor vehicle manufacturers and security firms. Unfortunately, the devices on such networks are often insecure by default, which creates problems in terms of the confidentiality and integrity of data transmitted across such networks. This paper discusses attacks that were successful on a simple network consisting of nodes using the ZigBee protocol stack and proposes defences to thwart these attacks, thus leading to increased user confidence in the ability of organisations to provide secure and effective services. The outcomes were that it was possible …

An Australian Perspective On The Challenges For Computer And Network Security For Novice End-Users, Patryk Szewczyk

Research outputs 2012

A good portion of today's investigations include, at least in part, an examination of the user's web history. Although it has lost ground over the past several years, Microsoft's Internet Explorer still accounts for a large portion of the web browser market share. Most users are now aware that Internet Explorer will save browsing history, user names, passwords and form history. Consequently some users seek to eliminate these artifacts, leaving behind less evidence for examiners to discover during investigations. However, most users, and probably a good portion of examiners are unaware Automatic Crash Recovery can leave a gold mine of …

Cooperation As A Service In Vanet: Implementation And Simulation Results, Hajar Mousannif, Ismail Khalil, Stephan Olariu

Computer Science Faculty Publications

The past decade has witnessed the emergence of Vehicular Ad-hoc Networks (VANET), specializing from the well-known Mobile Ad Hoc Networks (MANET) to Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) wireless communications. While the original motivation for Vehicular Networks was to promote traffic safety, recently it has become increasingly obvious that Vehicular Networks open new vistas for Internet access, providing weather or road condition, parking availability, distributed gaming, and advertisement. In previous papers [27,28], we introduced Cooperation as a Service (CaaS); a new service-oriented solution which enables improved and new services for the road users and an optimized use of the road network …

Learning Sparse Representations For Fruit Fly Gene Expression Pattern Image Annotation And Retreival, Lei Yuan, Alexander Woodard, Shuiwang Ji, Yuan Jiang, Zhi-Hua Zhou, Sudhir Kumar, Jieping Ye

Computer Science Faculty Publications

Background: Fruit fly embryogenesis is one of the best understood animal development systems, and the spatiotemporal gene expression dynamics in this process are captured by digital images. Analysis of these high-throughput images will provide novel insights into the functions, interactions, and networks of animal genes governing development. To facilitate comparative analysis, web-based interfaces have been developed to conduct image retrieval based on body part keywords and images. Currently, the keyword annotation of spatiotemporal gene expression patterns is conducted manually. However, this manual practice does not scale with the continuously expanding collection of images. In addition, existing image retrieval systems based …

Generalized Insertion Region Guides For Delaunay Mesh Refinement, Andrey Chernikov, Nikos Chrisochoides

Computer Science Faculty Publications

Mesh generation by Delaunay refinement is a widely used technique for constructing guaranteed quality triangular and tetrahedral meshes. The quality guarantees are usually provided in terms of the bounds on circumradius-to-shortest-edge ratio and on the grading of the resulting mesh. Traditionally circumcenters of skinny elements and middle points of boundary faces and edges are used for the positions of inserted points. However, recently variations of the traditional algorithms are being proposed that are designed to achieve certain optimization objectives by inserting new points in neighborhoods of the center points. In this paper we propose a general approach to the selection …

Momcmc: An Efficient Monte Carlo Method For Multi-Objective Sampling Over Real Parameter Space, Yaohang Li

Computer Science Faculty Publications

In this paper, we present a new population-based Monte Carlo method, so-called MOMCMC (Multi-Objective Markov Chain Monte Carlo). for sampling in the presence of multiple objective functions in real parameter space. The MOMCMC method is designed to address the "multi-objective sampling" problem, which is not only of interest in exploring diversified solutions at the Pareto optimal front in the function space of multiple objective functions, but also those near the front. MOMCMC integrates Differential Evolution (DE) style crossover into Markov Chain Monte Carlo (MCMC) to adaptively propose new solutions from the current population. The significance of dominance is taken into …

On A Versatile Stochastic Growth Model, Samiur Arif, Ismail Khalil, Stephan Olariu

Computer Science Faculty Publications

Growth phenomena are ubiquitous and pervasive not only in biology and the medical sciences, but also in economics, marketing and the computer and social sciences. We introduce a three-parameter version of the classic pure-birth process growth model when suitably instantiated, can be used to model growth phenomena in many seemingly unrelated application domains. We point out that the model is computationally attractive since it admits of conceptually simple, closed form solutions for the time-dependent probabilities.

Reusing Random Walks In Monte Carlo Methods For Linear Systems, Hao Ji, Yaohang Li

Computer Science Faculty Publications

In this paper, we present an approach of reusing random walks in Monte Carlo methods for linear systems. The fundamental idea is, during the Monte Carlo sampling process, the random walks generated to estimate one unknown element can also be effectively reused to estimate the other unknowns in the solution vector. As a result, when the random walks are reused, a single random walk can contribute samples for estimations of multiple unknowns in the solution simultaneously while ensuring that the samples for the same unknown element are statistically independent. Consequently, the total number of random walk transition steps needed for …

A Perspective On Resource Synchronization, Herbert Van De Sompel, Robert Sanderson, Martin Klein, Michael L. Nelson, Bernhard Haslhofer, Simeon Warner, Carl Lagoze

Computer Science Faculty Publications

Web applications frequently leverage resources made available by remote web servers. As resources are created, updated, deleted, or moved, these applications face challenges to remain in lockstep with changes on the server. Several approaches exist to help meet this challenge for use cases where "good enough" synchronization is acceptable. But when strict resource coverage or low synchronization latency is required, commonly accepted Web-based solutions remain illusive. This paper provides a perspective on the resource synchronization problem that results from inspiration gained from prior work, and initial insights resulting from the recently launched NISO/OAI ResourceSync effort.

Warcreate: Create Wayback-Consumable Warc Files From Any Webpage, Mat Kelly, Michele C. Weigle

Computer Science Faculty Publications

The Internet Archive's Wayback Machine is the most common way that typical users interact with web archives. The Internet Archive uses the Heritrix web crawler to transform pages on the publicly available web into Web ARChive (WARC) files, which can then be accessed using the Wayback Machine. Because Heritrix can only access the publicly available web, many personal pages (e.g. password-protected pages, social media pages) cannot be easily archived into the standard WARC format. We have created a Google Chrome extension, WARCreate, that allows a user to create a WARC file from any webpage. Using this tool, content that might …

Demographic Prediction Of Mobile User From Phone Usage, Shahram Mohrehkesh, Shuiwang Ji, Tamer Nadeem, Michele C. Weigle

Computer Science Faculty Publications

In this paper, we describe how we use the mobile phone usage of users to predict their demographic attributes. Using call log, visited GSM cells information, visited Bluetooth devices, visited Wireless LAN devices, accelerometer data, and so on, we predict the gender, age, marital status, job and number of people in household of users. The accuracy of developed classifiers for these classification problems ranges from 45-87% depending upon the particular classification problem.

Warcreate - Create Wayback-Consumable Warc Files From Any Webpage, Mat Kelly, Michele C. Weigle, Michael L. Nelson

Computer Science Faculty Publications

[First Slide]

What is WARCreate?

• Google Chrome extension
• Creates WARC files
• Enables preservation by users from their browser
• First steps in bringing Institutional Archiving facilities to the PC

Assessing The Accessibility Of E-Learning, Morten Goodwin, Iain Sutherland, Frode Roarson, Tom Drange

Research outputs 2012

Equal participation for people with special needs is an important objective in education politics. Governments have a strong emphasis on enabling education for all citizens. The trend of using e-learning both for on campus and remote delivery of students has the potential of enabling new opportunities for people who previously faced challenges following education. On the other hand, providing online education bears the risk of creating new barriers. This paper examines different stages of providing educational content and delivering teaching material online. This is based on practical experiences from Noroff University College providing a bachelor degree in a security related …

The 2011 Idn Homograph Attack Mitigation Survey, Peter Hannay, Gregory Baatard

Research outputs 2012

The advent of internationalized domain names (IDNs) has introduced a new threat, with the non-English character sets allowing for visual mimicry of domain names. Whilst this potential for this form of attack has been well recognized, many applications such as Internet browsers and e-mail clients have been slow to adopt successful mitigation strategies and countermeasures. This research examines those strategies and countermeasures, identifying areas of weakness that allow for homograph attacks. As well as examining the presentation of IDNs in e-mail clients and Internet browser URL bars, this year’s study examines the presentation of IDNs in browser-based security certificates and …

Exploration Games Played On A Ddr Pad Can Constitute Beneficial Physical Exercise, Kimthy Nguyen, Bohan Li, Martin Masek, Yuwanuch Gulatee

Research outputs 2012

The addition of an exercise component to computer games is a method that attempts to increase exercise compliance among the population. Various attempts at such games have been made, both commercially and as research projects, but the set of studied game mechanics that are both entertaining and provide beneficial exercise are relatively small. In our work, a game mechanic was designed for a floor-based input controller (DDR Pad). Rather than the standard mechanic usually employed for this device, our approach allows the player to explore a virtual world, requiring exertive movements on the input device in order to progress. The …

Noise Tolerance For Real-Time Evolutionary Learning Of Cooperative Predator-Prey Strategies, Mark Wittkamp, Luigi Barone, Philip Hingston, Lyndon While

Research outputs 2012

Learning team-based strategies in real-time is a difficult task, much more so in the presence of noise. In our previous work in the Prey and Predators domain we introduced an algorithm capable of evolving cooperative team strategies in real-time using fitness evaluations against a perfect opponent model. This paper continues our work within the same domain, training a team of predators to capture a prey. We investigate the effect of varying degrees of opponent model noise in our learning system. In the presence of and in the effort to mitigate the effects of such noise we present modifications to our …

Using Monte Carlo Tree Search For Replanning In A Multistage Simultaneous Game, Daniel Beard, Philip Hingston, Martin Masek

Research outputs 2012

In this study, we introduce MC-TSAR, a Monte Carlo Tree Search algorithm for strategy selection in simultaneous multistage games. We evaluate the algorithm using a battle planning scenario in which replanning is possible. We show that the algorithm can be used to select a strategy that approximates a Nash equilibrium strategy, taking into account the possibility of switching strategies part way through the execution of the scenario in the light of new information on the progress of the battle.

A Multimodal Problem For Competitive Coevolution, Philip Hingston, Tirtha Ranjeet, Chiou Peng Lam, Martin Masek

Research outputs 2012

Coevolutionary algorithms are a special kind of evolutionary algorithm with advantages in solving certain specific kinds of problems. In particular, competitive coevolutionary algorithms can be used to study problems in which two sides compete against each other and must choose a suitable strategy. Often these problems are multimodal - there is more than one strong strategy for each side. In this paper, we introduce a scalable multimodal test problem for competitive coevolution, and use it to investigate the effectiveness of some common coevolutionary algorithm enhancement techniques.

A Technical Guide To Effective And Accessible Web Surveys, Gregory Baatard

Research outputs 2012

The Internet is becoming an increasingly prominent medium for the administration of surveys. Although individual findings vary, the majority of the literature agrees that the appropriateness and response rates of web surveys is expected to rise in the future as we enter a generation of "digital natives" and mail-based communication becomes increasingly antiquated. Just about every aspect and tenet of traditional survey methodology has received attention in academic literature, positioning it as one of the most mature data collection techniques and a mainstay in all areas of research. While much of this accumulated knowledge is applicable and relevant to web …