Reducing cache lookup and publish overhead through locality awareness in P2P web caching

Peer-to-Peer (P2P) Web caching has been a hot research topic in recent years as it can create scalable and robust designs for decentralized Internet-scale applications. However, many P2P Web caching systems suffer expensive overheads such as lookup and publish messages, and lack of locality awareness. In this paper we present the development of a locality aware P2P cache system to overcome these limitations by using routing table locality, aggregation and soft state. The experiments show that our P2P cache system improves the performance of index operations through the reduction of the amount of information processed by nodes, the reduction of the number of index messages sent by nodes, and the improvement of the locality of cache pointers.

Using Web 2.0 applications to deliver innovative services on the internet

The emergence of Web 2.0 has brought about new Web applications being developed. Represented chiefly by Web applications such as YouTube, MySpace, blogs and Google applications, these community-based technologies are changing the way we use the Internet. One interesting result of these innovations is the extensibility of these applications. For example, YouTubepsilas content can be displayed on other Websites and hence, are popularly dasiaextendedpsila to be displayed on individual blogs and other organization Websites. In this paper, we discussed two applications that were a result of extending Google Earth and Google Maps. These two applications illustrate how new solutions can be quickly built from these extensible applications thus suggesting the future of application development, one that is built upon applications rather than object-oriented components.

The research and development of ChemGrid in CGSP

With the rapid development of computing technologies and network technologies, Grid technology has emerged as the solution for high-performance computing. Recently, the grid of orient-services has become a hot issue in this research area. In this paper, we propose an architecture of ChemGrid in CGSP (China Grid Support Platform). The effectiveness of the proposed architecture is demonstrated by an example which is developed as a Web service based on CGSP; the Web service is used for searching elements in the periodic table. An improvement of the user interface for applications is proposed in order to obtain results interactively. Finally, an extension of ChemGrid is discussed in order to integrate different types of resources and provide specialized services.

The use of Web 2.0 Technologies to promote higher order thinking skills

During 2007 several independent Victorian secondary schools participated in a study exploring the ways in which the use of learning technologies can support the development of higher order thinking skills for students. This paper focuses on the use of Information and Communications Technologies (ICT) including Web 2.0 technologies for promoting effective teaching and learning in science. A case study methodology was used to describe how individual teachers used ICT and Web 2.0 in their settings. Data included interviews (focus group and individual), questionnaires, monitoring of teacher and student use of smart tools, analysis of curriculum documents and delivery methods and of student work samples. The evaluation used an interpretive methodology to investigate five research areas: Higher-order thinking, Metacognitive awareness, Team work/collaboration, Affect towards school/learning and Ownership of learning. Three cases are reported on in this paper. Each describes how student engagement and learning increased and how teachers’ attitudes and skills developed. Examples of student and teacher blogs are provided to illustrate how such technologies encourage students and teachers to look beyond text science.

Developing a web-based information resource for palliative care : an action-research inspired approach

Background : General Practitioners and community nurses rely on easily accessible, evidence-based online information to guide practice. To date, the methods that underpin the scoping of user-identified online information needs in palliative care have remained under-explored. This paper describes the benefits and challenges of a collaborative approach involving users and experts that informed the first stage of the development of a palliative care website.

Method : The action research-inspired methodology included a panel assessment of an existing palliative care website based in Victoria, Australia; a pre-development survey (n = 197) scoping potential audiences and palliative care information needs; working parties conducting a needs analysis about necessary information content for a redeveloped website targeting health professionals and caregivers/patients; an iterative evaluation process involving users and experts; as well as a final evaluation survey (n = 166).

Results : Involving users in the identification of content and links for a palliative care website is time-consuming and requires initial resources, strong networking skills and commitment. However, user participation provided crucial information that led to the widened the scope of the website audience and guided the development and testing of the website. The needs analysis underpinning the project suggests that palliative care peak bodies need to address three distinct audiences (clinicians, allied health professionals as well as patients and their caregivers).

Conclusion : Web developers should pay close attention to the content, language, and accessibility needs of these groups. Given the substantial cost associated with the maintenance of authoritative health information sites, the paper proposes a more collaborative development in which users can be engaged in the definition of content to ensure relevance and responsiveness, and to eliminate unnecessary detail. Access to volunteer networks forms an integral part of such an approach.

Introducing a learning repository using a blended professional development approach

This paper outlines the professional development program used to introduce a learning repository at Deakin University. Providing appropriate, timely and effective professional development programs to support academic and other staff is one of the objectives of the Deakin University Teaching and Learning Functional Plan 2008. Our blended program combines web-based and face-to-face training with a wide variety of resources to support staff. Issues noted in the literature relating to the introduction and use of learning repositories informed the planning and development of our program. Challenges and issues we experienced at Deakin are also outlined.

Exploratory study into the use of the web as a marketing tool by arts organisations in Vietnam

This paper presents exploratory findings into the use of the web as a marketing tool by arts organisations in Vietnam. The websites of seventeen Vietnamese arts organisations were evaluated to determine current levels of marketing functionality. The findings were analysed from the perspective of the four elements of the marketing mix (price, place, product and promotion). The study found that arts organisations in Vietnam are less sophisticated in using the web as a marketing tool compared with Western counterparts, and that organisation's websites contained basic information catalogues and contact details but limited multimedia functionality. The implications to audience development will be explored through a survey with stakeholders of the seventeen arts organisations in Vietnam as a future research stream.

NB: The terms 'web' and 'Internet' are used interchangeably in this paper.

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.

Lifelong learning, the knowledge economy and professional development

There is increasing rhetoric surrounding the concepts of lifelong learning and the knowledge economy (Peters, 2001); specifically e-learning and web-based learning environments. This paper seeks to explore the journeys of two professionals from two separate disciplines and work environments located in one higher-education institution where there is an increasing push to develop learning materials using online and other e-learning technologies.

With the steady shift from traditional learning, online learning is now playing an integral part of course delivery at the Australian regional university where the authors work. A contextual analysis of online learning within the broader views of the institution provides examples of discourses relating to online environments, knowledge management, and the professional development of the participants.

This discussion draws on the concepts of lifelong learning (Crowley, 2002; Serim & Murray, 2003) and embeds them within an online learning environment. Exploration of the multiple workplace environments within the institution under review demonstrates one way in which educators can embrace and position themselves as they negotiate changing educational discourses.

Examining how teachers use web 2.0 technologies in Science lessons to promote higher order thinking in teaching science

During 2007 several independent Victorian secondary schools participated in a study exploring the ways in which the use of learning technologies can support the development of higher order thinking skills for students. This paper focuses on the use of Information and Communications Technologies (ICT) including Web 2.0 technologies for promoting effective teaching and learning in science. A case study methodology was used to describe how individual teachers used ICT and Web 2.0 in their settings. Data included interviews (focus group and individual), questionnaires, monitoring of teacher and student use of smart tools, analysis of curriculum documents and delivery methods and of student work samples. The evaluation used an interpretive methodology to investigate five research areas'. Higher-order thinking, Metacognitive awareness, Team work/collaboration, Affect towards school/learning and Ownership of learning. Three cases are reported on in this paper. Each describes how student engagement and learning increased and how teachers' attitudes and skills developed. Examples of student and teacher blogs are provided to illustrate how such technologies encourage  students and teachers to look beyond text science.

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.

The use of the web as a marketing tool by selected arts organisations in Vietnam : a preliminary investigation

This paper presents exploratory findings into the use of the web as a marketing tool by arts organisations in Vietnam. The uniform resource locators (URLs) of Vietnamese arts organisations listed in the cultural profiles category of the directory of Vietnamese Cultural Organisations/Departments created by Visiting Arts (UK) for the Ministry of Culture, Sport and Tourism, Vietnam (MCST) (formerly Ministry of Culture and Information – MOCI) were accessed. 17 of these websites were ‘live’ at the time of the study and were evaluated to determine current levels of marketing functionality utilised within the sites. The findings of the evaluation were analysed from the perspective of the four elements of marketing mix (price, place, product and promotion). The study found that all 17 Vietnamese arts organisations analysed were less sophisticated in the usage of the web as a marketing tool compared with their Western counterparts, and that such organisations’ websites contained basic information catalogues and contact details but had limited multimedia functionality. The implications to audience development will be explored further through a survey with stakeholders of the 17 arts organisations in Vietnam as a future research stream.

Helping business leverage web 2.0 to generate social capital

Businesses large and small are keen to leverage Web 2.0 applications to interact with customers, suppliers and other stakeholders. Whilst some have achieved success, others are still struggling to understand the opportunities and threats associated with using Web 2.0 in business. This paper discusses the development of a conceptual framework to help businesses understand how they could leverage Web 2.0 applications to generate social capital. The proposed framework helps businesses (i) identify opportunities to leverage the strengths and features of various Web 2.0 applications, and (ii) develop business strategies for Web 2.0. As a positional paper, it contributes to theory by proposing a systematic and structured approach for understanding how social capital is created, captured, distributed, and consumed online.

Web 2.0 VDS : social networking as a facilitator of design education

In 2009, Deakin University and the Chinese University of Hong Kong trailed the use of Web 2.0 technologies to enhance learning outcomes in a third year architectural design studio that was modelled on the Virtual Design Studios (VDS) of past decades. The studio developed the VDS further by integrating a social learning environment into the blended learning experience. The Web 2.0 VDS utilised the social networking sites Ning.com, YouTube and Skype; various 3D modelling and video- and/or image-processing software; plus chat-software. These were used in combination to deliver lectures, communicate learning goals, disseminate learning resources, submit work, and provide feedback and comments on various design works in assessing students’ outcomes. This paper centres on issues of learning and teaching associated with the development of a Social Network VDS (SNVDS).