Ghosts in the machine : student participation and grade attainment in a web-assisted social work course

For many social work educators, the debate about whether social work education should be delivered using online technology has, as a result of institutional imperatives, moved on to how best this can be done. In this article, the process of designing and delivering part of a social work course using asynchronous online discussion is described and reflected upon. Student participation in the online environment is also compared with final course grades and the findings discussed in relation to existing literature. Recommendations for the future delivery of social work courses using online technology emerging from this discussion are offered.

Technology adoption : voices of teaching academics, educational designers and students

This folio presents three studies (a dissertation and two electives) which use qualitative case study methodologies to investigate technology adoption from three perspectives. Central to all three studies is the study context of Monash University. The Dissertation explores adoption of web-based learning and teaching approaches from the perspective of teaching academics as they incorporate these to facilitate their students’ learning. The study investigates teaching academics’ reasons for adopting these new technologies, the factors that influenced their adoption decisions, and the challenges they were confronted with, including the contributing factors that impacted on their adoption decisions. The study shows that while contextual factors such as power and politics of the school, department, faculty and the institution impact on adoption, supportive organisational infrastructures and policy frameworks are necessary to encourage adoption, including wider adoption. In turn, on going staff development, adoption of new work practices and being adaptive to changing work environments are key demands made on teaching academics as a result of adopting web-based teaching approaches. Elective 1, a smaller study, leads on from the dissertation and examines the impact of technology adoption on the evolving role of educational designers. The study identifies the educational designers’ role change in assisting teaching academics to move from more conventional forms of teaching to more technology based learner-centred collaborative models. An important aspect of the study is the managers’ perspectives of this role in a university that has adopted a strong flexible learning and technology policy. The findings show that educational designers now work as project managers in larger teams consisting of a wider range of professionals, their expanded role in introducing technology into learning designs, providing staff development in the area, and giving technical help including advice on copyright and intellectual property issues. Elective 2 explores student readiness to adopt these technologies for learning. The study is designed to achieve an understanding of three broad categories of learners from a first year design unit: (1) South East Asian and East Asian students, (2) all other international students, and (3) local Australian students are studied to examine their readiness for modes of learning that are flexible; their approaches to study in a creative discipline area; and their openness to using technology. Findings of the study are discussed under the key themes – dependence on the teacher and classroom environment, flexible learning and working alone, structure, communication and work patterns. The study concludes by discussing the possible cultural attributes that have an impact on the learning. The three studies found that the institution, its people, structures and processes must all adapt, evolve and grow in order to provide effective, engaging, student-centred web-based learning environments. Students in turn must be enabled to manage their study, make use of the technologies and maximise their learning experience. The findings revealed the stage of technology use reached at Monash University at the time of the study through the voices of the teaching academics, educational designers and students.

Modeling intelligent agents for web-based information gathering

The recent emergence of intelligent agent technology and advances in information gathering have been the important steps forward in efficiently managing and using the vast amount of information now available on the Web to make informed decisions. There are, however, still many problems that need to be overcome in the information gathering research arena to enable the delivery of relevant information required by end users. Good decisions cannot be made without sufficient, timely, and correct information. Traditionally it is said that knowledge is power, however, nowadays sufficient, timely, and correct information is power. So gathering relevant information to meet user information needs is the crucial step for making good decisions. The ideal goal of information gathering is to obtain only the information that users need (no more and no less). However, the volume of information available, diversity formats of information, uncertainties of information, and distributed locations of information (e.g. World Wide Web) hinder the process of gathering the right information to meet the user needs. Specifically, two fundamental issues in regard to efficiency of information gathering are mismatch and overload. The mismatch means some information that meets user needs has not been gathered (or missed out), whereas, the overload means some gathered information is not what users need. Traditional information retrieval has been developed well in the past twenty years. The introduction of the Web has changed people's perceptions of information retrieval. Usually, the task of information retrieval is considered to have the function of leading the user to those documents that are relevant to his/her information needs. The similar function in information retrieval is to filter out the irrelevant documents (or called information filtering). Research into traditional information retrieval has provided many retrieval models and techniques to represent documents and queries. Nowadays, information is becoming highly distributed, and increasingly difficult to gather. On the other hand, people have found a lot of uncertainties that are contained in the user information needs. These motivate the need for research in agent-based information gathering. Agent-based information systems arise at this moment. In these kinds of systems, intelligent agents will get commitments from their users and act on the users behalf to gather the required information. They can easily retrieve the relevant information from highly distributed uncertain environments because of their merits of intelligent, autonomy and distribution. The current research for agent-based information gathering systems is divided into single agent gathering systems, and multi-agent gathering systems. In both research areas, there are still open problems to be solved so that agent-based information gathering systems can retrieve the uncertain information more effectively from the highly distributed environments. The aim of this thesis is to research the theoretical framework for intelligent agents to gather information from the Web. This research integrates the areas of information retrieval and intelligent agents. The specific research areas in this thesis are the development of an information filtering model for single agent systems, and the development of a dynamic belief model for information fusion for multi-agent systems. The research results are also supported by the construction of real information gathering agents (e.g., Job Agent) for the Internet to help users to gather useful information stored in Web sites. In such a framework, information gathering agents have abilities to describe (or learn) the user information needs, and act like users to retrieve, filter, and/or fuse the information. A rough set based information filtering model is developed to address the problem of overload. The new approach allows users to describe their information needs on user concept spaces rather than on document spaces, and it views a user information need as a rough set over the document space. The rough set decision theory is used to classify new documents into three regions: positive region, boundary region, and negative region. Two experiments are presented to verify this model, and it shows that the rough set based model provides an efficient approach to the overload problem. In this research, a dynamic belief model for information fusion in multi-agent environments is also developed. This model has a polynomial time complexity, and it has been proven that the fusion results are belief (mass) functions. By using this model, a collection fusion algorithm for information gathering agents is presented. The difficult problem for this research is the case where collections may be used by more than one agent. This algorithm, however, uses the technique of cooperation between agents, and provides a solution for this difficult problem in distributed information retrieval systems. This thesis presents the solutions to the theoretical problems in agent-based information gathering systems, including information filtering models, agent belief modeling, and collection fusions. It also presents solutions to some of the technical problems in agent-based information systems, such as document classification, the architecture for agent-based information gathering systems, and the decision in multiple agent environments. Such kinds of information gathering agents will gather relevant information from highly distributed uncertain environments.

Protecting web services from distributed denial of service attacks

The outcome of the research was the development of three network defence systems to protect corporate network infrastructure. The results showed that these defences were able to detect and filter around 94% of the DDoS attack traffic within a matter of seconds.

Reliability of web services

This thesis explores the fault tolerance issues of web services computing and proposes a model for reliability of transaction-oriented web services applications.

Improving nonwoven web quality with a new web scanning device

This thesis presents a novel web scanning device with high processing speed and optical sensitivity and a study of the interrelationships between dimensional parameters and functional properties of nonwovens using such a web scanning device.

Knowledge transfer in enterprise IT support provision using web-based self-service

This research identified critical success factors and a staged model of knowledge transfer in the provision of after-sales information technology support to enterprise customers when Web-based Self-service systems are used. The research highlights the need for a relational, stakeholder-oriented approach that considers stakeholder interactions, knowledge flows, needs and capabilities.

Enhancing clouds, internet-scale distributed systems, using attributed web services

This thesis presents a new framework allowing cloud services to be stateful, cloud resource state and characteristics to be published, and brokering for easy cloud resource discovery and selection to be offered. Using the framework, new technology developed significantly simplifies the discovery, selection and use of clusters on the Internet.

Web-text : perceptions of digital reading skills in the ESL classroom

New strategies required in Web reading and digital writing cause previous notions of literacy to be reshaped and compel teachers to rethink classroom reading practice. The aim of this paper is to compare student perceptions of reading skills needed in the traditional print- text mode with the skills needed to read and gather information on the Web. Do students perceive reading as different on the Web? Are there implications for reading classroom teachers? This research was conducted in a medium-sized suburban government primary school of 580 students from 72 different countries. The participants were 48 students in two grade-six classes, with a focus on 12 English as second language (ESL) students' responses. These students came from Taiwan, China, India, Malaysia, Poland and Bhutan. The study was replicated in an adult ELICOS language centre environment with the authors own class of 18 students from China, Indonesia, Korea, Taiwan, Thailand and Japan. Different student expectations of Web-text compared to paper-text were evident. This research adds to our constantly evolving notions of literacy embracing technology and can be applied to primary, secondary and tertiary levels of ESL teaching practice.

A technology to expose a cluster as a service in a cloud

Clouds refer to computational resources (in particular, clusters) that are accessible as scalable, on demand, pay-as- you-go services provided in the Internet. However, clouds are in their infancy and lack a high level abstraction. Specifically, there is no effective discovery and selection service for clusters and offer little to no ease of use for clients. Here we show a technology that exposes clusters as Web services in the form of a Cluster as a Service for publishing via WSDL, discovering, selecting and using clusters.

Towards web support for tacit knowledge exchanges

Organisations are continually looking for means to stimulate innovation and creativity, within and across working groups, functions and geographical boundaries. One of the ways to achieve this is through tacit knowledge exchanges in the form of sharing and transfer of knowledge by means of narratives, storytelling, reminders, best practices etc. Knowledge is an invaluable part of the shared practices of communities that need, create, adapt, transform, shape and use it. These Communities of Practice (CoPs) are informally created, evolve over time, and socially bind people together that share the same interests and passions. At the same time, organisations are turning more towards information technology and seek ways of leveraging their investments in Web technologies, in particular, to foster knowledge exchanges between individuals and working groups. The Web may be applied in new, innovative ways to draw dispersed community members together virtually and in particular, to promote tacit knowledge exchanges. We argue for a content-rich web environment that combines tools, services and mechanisms tailored towards tacit knowledge exchanges to support the unique work practices and situational knowledge needs of CoPs.

Web usability guidelines for smartphones : a synergic approach

The mobile phones that we carry with us all the time have started becoming increasingly sophisticated and consequently are referred to as “Smartphones”. Smartphones today are extremely powerful and, in addition to making phone calls, are capable of performing a variety of other functions. One very important function is the ability to access the Internet for a wide number of purposes. An obstacle that these users face is that access to the Internet is through a tiny interface, which is in sharp contrast to the typically large, flat-screen monitor. Unfortunately, many websites are neither designed for nor suitable to be accessed from these small devices. With relatively little effort, however, the developers of the websites can make the web interfaces more appropriate for Smartphones and hence accessible to a much larger audience. In this paper, we focus on “web usability”, a term essentially concerned with the ease of accessing and entering information on websites. We compile and synergize several different guidelines with the intent of increasing the web usability of Smartphones.

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.