The adoption of web services based architectures in Australian organisations : an exploratory study

This exploratory research study contributes to answering two related research questions. First it identifies the key influences that seem to be driving and constraining the adoption of Service Oriented Architecture (SOA) and XML/Web Services and secondly it adduces some evidence to confirm that these influences significantly differ from those found by IS researchers in the adoption of other innovations in organisations. The key drivers were found to include improved agility, reuse and [open standards enabled] interoperability. None of these map easily to factors identified in previous Diffusion of Innovations (DOI) related IS research. In spite of standards being originally seen as strengths, it was found that the lack of IT industry agreement on the next generation of Web Services standards is now emerging as a perceived constraint. Variants of the ‘network effect’ such as partner push and client drag were also found to be influential.

Enhancing cloud computing environments using a cluster as a service

The emergence of cloud computing has caused a significant change in how IT infrastructures are provided to research and business organizations. Instead of paying for expensive hardware and incur excessive maintenance costs, it is now possible to rent the IT infrastructure of other organizations for a minimal fee. While the existence of cloud computing is new. The elements used to create clouds have been around for some time. Cloud computing systems have been made possible through the use of large-scale clusters, service-oriented architecture (SOA), Web services, and virtualization. While the idea of offering resources via Web services is commonplace in cloud computing, little attention has been paid to the clients themselves specifically, human operators. Despite that clouds host a variety of resources which in turn are accessible to a variety of clients, support for human users is minimal.

Improvement of DDoS attack detection and web access anonymity

The thesis has covered a range of algorithms that help to improve the security of web services. The research focused on the problems of DDoS attack and traffic analysis attack against service availability and information privacy respectively. Finally, this research significantly advantaged DDoS attack detection and web access anonymity.

Ebia Olewale : a life of service

Over the last seven decades, Papua New Guinea (PNG) has grown from a disparate collection of traditional societies loosely governed by its neighbour, Australia, to a thriving, developing state. The story of how PNG came to lose its colonial shackles and gain independence is one of collective endeavour, as the tiny group of Papua New Guineans who gathered in the dusty streets of Port Moresby transformed into the leaders of the new nation. One of them was the young teacher, Ebia Olewale, who in his own journey from the village to the nation experienced many triumphs and tragedies. PNG’s story – from the village to the world – is retold in this book, through the experiences of Ebia Olewale.

EST-PAC HPC - a web portal for high-throughput EST annotation and protein sequence prediction

Expressed Sequence Tags (ESTs) are short DNA sequences generated by sequencing the transcribed cDNAs coming from a gene expression. They can provide significant functional, structural and evolutionary information and thus are a primary resource for gene discovery. EST annotation basically refers to the analysis of unknown ESTs that can be performed by database similarity search for possible identities and database search for functional prediction of translation products. Such kind of annotation typically consists of a series of repetitive tasks which should be automated, and be customizable and amenable to using distributed computing resources. Furthermore, processing of EST data should be done efficiently using a high performance computing platform. In this paper, we describe an EST annotator, EST-PACHPC, which has been developed for harnessing HPC resources potentially from Grid and Cloud systems for high throughput EST annotations. The performance analysis of EST-PACHPC has shown that it provides substantial performance gain in EST annotation.

Detecting and mitigating HX-DoS attacks against cloud web services

Cyber-Physical Systems allow for the interaction of the cyber world and physical worlds using as a central service called Cloud Web Services. Cloud Web Services can sit well within three models of Cyber- Physical Systems, Software-as-a-Service (SaaS), Platform-as-a-Service (PaaS), and Infrastructure-as-a- Service (IaaS). With any Cyber-Physical system use Cloud Web Services it inherits a security problem, the HX-DoS attack. HX-DoS attack is a combination of HTTP and XML messages that are intentionally sent to flood and destroy the communication channel of the cloud service provider. The relevance of this research is that TCP/IP flood attacks are a common problem and a lot of research to mitigate them has previously been discussed. But HTTP denial of service and XML denial of service problem has only been addressed in a few papers. In this paper, we get closer to closing this gap on this problem with our new defence system called Pre- Decision, Advance Decision, Learning System (ENDER). In our previous experiments using our Cloud Protector, we were successful at detecting and mitigate 91% with a 9% false positive of HX-DoS attack traffic. In this paper, ENDER was able to improve upon this result by being trained and tested on the same data, but with a greater result of 99% detection and 1% false positive.

Web 2.0 for networked learning : from collaboration to shared cognition and knowledge networking

This poster presents research-in-progress into the educational affordances of so-called Web 2.0 sites, services, with a particular emphasis on those applications that involve forms of shared human-machine cognition and that promote public knowledge networking. This research involves reviewing many hundreds of Web 2.0 tools and selecting approximately 50 for further analysis and exploration as learning applications. In doing so, the research will generate examples of unusual affordances provided by Web 2.0; it will also present a more structured categorisation of the kinds of uses and benefits of these tools. This approach is valuable because much current research and analysis of the impact of Web 2.0 on education, particularly higher education, has emphasised a relatively limited array of tools – principally blogs, wikis and social networking services – that offer educators and students opportunities for student-led collaborative work. Such opportunities involve strong emphasis on constructivist pedagogy: students’ interactions with each other, mediated via the Internet, are viewed as the positive benefit which networked learning can provide. However, Web 2.0 is far more than just collaboration, and associated shared self-expression. In particular, Web 2.0 includes many examples of services that take one form of input from a user and, rather than just sharing it with others, enable the transformation of that input into different forms, either as visualisations, maps, or other re-representations. Web 2.0 is also starting to see the development of knowledge-work engines that embody the concept of shared cognition, in which the service and the user cooperate in the production of some final knowledge output or which present to users knowledge that has already been processed more extensively than through simple searching. Web 2.0 is also closely associated with the idea that knowledge work is now networked and distributed; it involves users appropriating, creating and sharing knowledge products in a very public way, far beyond the narrow ‘audience’ of a particular course or program of study. The research presented in this poster will provide, firstly, examples of the Web 2.0 tools which emphasise these additional ways of exploiting the Internet for networked learning; secondly, the research will provide a first iteration of the overarching structure of categories and classifications which can be used to assess any proposed Web 2.0 application in terms of its affordances for learning as knowledge networking. By understanding these technologies, truly collaborative networked learning can be developed that blends with the emerging cultures of online behaviour increasingly common to contemporary student populations.

Online peer mentoring with pre-service teachers : a learning experience

In 2010, 34 pre-service teachers at Deakin University were invited to use Web 2.0 technologies to support practicum in rural and regional schools. Students in their final year of the Bachelor of Education Primary course were given access to an online forum, a ‗ning‘, to facilitate development of mentoring relationships within a community of peers. Access to the ning was presented as an optional extra available only to students undertaking their professional experience in rural and regional settings. Based on the work of Le Cornu (2005), mentoring was framed as a collaborative and collegial arrangement through which participants could hone the interpersonal and critical reflection skills crucial to practicum. A ning was selected as it: 1) allowed the creation of a closed, protected social network with customised options, and 2) requires little technological skills and investment of time from participants in terms of setting up a profile and participating in the online community. These features seemed to make it an ideal platform for pre-service teachers to analyse and reflect on professional experience. However, the small pre-service cohort did not choose to access the site. This unexpected outcome seems to challenge contemporary discourses about the current generation‘s attitudes to web based technology. It also highlights the importance of coupling use of template-based online tools, such as the ning, with awareness of Bourdieu‘s (1977) social capital to ensure uptake. In capturing the learnings from the project and systematically reviewing relevant literature, this paper provides a set of recommendations for conceptualising and engaging pre-service teachers in the use of online forums.

Resisting web proxy-based HTTP attacks by temporal and spatial locality behavior

A novel server-side defense scheme is proposed to resist the Web proxy-based distributed denial of service attack. The approach utilizes the temporal and spatial locality to extract the behavior features of the proxy-to-server traffic, which makes the scheme independent of the traffic intensity and frequently varying Web contents. A nonlinear mapping function is introduced to protect weak signals from the interference of infrequent large values. Then, a new hidden semi-Markov model parameterized by Gaussian-mixture and Gamma distributions is proposed to describe the time-varying traffic behavior of Web proxies. The new method reduces the number of parameters to be estimated, and can characterize the dynamic evolution of the proxy-to-server traffic rather than the static statistics. Two diagnosis approaches at different scales are introduced to meet the requirement of both fine-grained and coarse-grained detection. Soft control is a novel attack response method proposed in this work. It converts a suspicious traffic into a relatively normal one by behavior reshaping rather than rudely discarding. This measure can protect the quality of services of legitimate users. The experiments confirm the effectiveness of the proposed scheme.

Reasons for using web-based counselling among family and friends impacted by problem gambling

Despite the range of free services available in Australia, few family and friends of people with problem gambling access them. Over recent years, the Australian gambling help service system has expanded to include web-based counselling. Family and friends make up approximately 15% of people accessing this new modality, however little is known of the reasons for choosing this form of assistance over other interventions. This research aimed to understand the reasons family and friends choose to use single-session web-based counselling over other modes (i.e., face-to-face and telephone), as well as why they would recommend it to other affected people.

The study involved 63 participants (70% intimate partners, 13% children, 6% friends, 5% parents, 6% other family members) who completed openended questions on reasons for using and recommending web-based counselling, with over three-quarters of the sample seeking help for the first time.

A descriptive content analysis revealed multiple overlapping themes, including ease of access (41.3% of reasons for choosing), privacy and anonymity (17.5%), and a preference for the characteristics inherent in the therapeutic medium (23.8%). We also found webbased counselling provided a pathway into services (11.1%) and that the intervention provided was viewed as helpful and a reason for recommendation (34.9% of reasons for recommending).

This research provides important new information on the help seeking preferences of family and friends. Future research is required to understand the relationship between reasons for use, help-seeking preferences and the effectiveness of single-session web-based counselling for people affected by problem gambling.

Web-based counseling for problem gambling: exploring motivations and recommendations

Background:

Yahoo! A mobile news service is a bold move

The investment in Katie Couric and senior reporters from The New York Times signals that Yahoo wants to move into Web TV and mobile video content in an effort to take on the the giants of American network and cable television, and perhaps even Netflix, which is rumoured to also be looking at an Australian launch next yea

Australian pre-service secondary teacher education courses : challenges and Dilemmas

Getting everyone on the same page : A staff focus group study for library web site redesign

Purpose - Using staff focus groups in the redevelopment of a library web site deploys their knowledge of user navigation issues and search strategies and addresses the unique needs of library staff. This paper seeks to describe the process of planning, recruiting, and conducting staff focus groups and provide a discussion of lessons learned. Design/methodology/approach - A committee of professionals and non-professionals from the University of Calgary Library conducted a series of five focus groups with library staff. The goals were to determine their content and service priorities for the redesigned library web site, and also to ensure that staff was included in the redesign process. Findings - This paper makes recommendations for library staff focus group interviewing, including planning, formulating questions, recruitment, conducting sessions, and analysis and reporting. Practical implications - Focus group interviews can be effectively conducted in-house, with careful planning and adherence to established guidelines. Focus groups are a very useful method for gathering staff input for web site redesign or any other library-planning project. Originality/value - This paper will be useful to librarians interested in assessing staff needs and priorities through focus group interviews. The paper fills a void in the library literature regarding the use of library staff as both focus group leaders and participants.