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This paper explores the use of Web 2.0 technologies for collaborative learning in a higher education context. A review of the literature exploring the strengths and weaknesses of Web 2.0 technology is presented, and a conceptual model of a Web 2.0 community of inquiry is introduced. Two Australian case studies are described, with an ex-poste evaluation of(More)
Working with three domain specialists we investigate human-centered approaches to geovisualization following an ISO13407 taxonomy covering context of use, requirements and early stages of design. Our case study, undertaken over three years, draws attention to repeating trends: that generic approaches fail to elicit adequate requirements for geovis(More)
Stable localised roll structures have been observed in many physical problems and model equations, notably in the 1D Swift–Hohenberg equation. Reflection-symmetric localised rolls are often found to lie on two " snaking " solution branches, so that the spatial width of the localised rolls increases when moving along each branch. Recent numerical results by(More)
Collaborative virtual environments (CVEs) are a promising technology enabling remote participants to share a common place through three-dimensional graphical scenes. Within the COVEN project (Normand, 1999), we have run prolonged series of Internet trials that have allowed us to gather valuable data to formulate us-ability guidelines and networking(More)
In this paper, we describe formations, a means for the explicit support of groups and group effects in Collaborative Virtual Environments (CVEs). Being part of a formation affects a participant's experience of a virtual environment. We introduce a framework that defines the components of a formation, including an object of interest, members, non-members and(More)
Fuzzy Cognitive Mapping (FCM) is a widely used participatory modelling methodology in which stakeholders collaboratively develop a 'cognitive map' (a weighted, directed graph), representing the perceived causal structure of their system. This can be directly transformed by a workshop facilitator into simple mathematical models to be interrogated by(More)
Our understanding of the molecular structure and function in the budding yeast, Saccharomyces cerevisiae, surpasses that of all other eukaryotic cells. However, the fundamental properties of the complex processes and their control systems have been difficult to reconstruct from detailed dissection of their molecular components. Spontaneous oscillatory(More)
—Power regulators and converters impose high requirements on the latency and resilience of their control circuitry. In this paper we design a speed-independent multiphase buck controller based on a novel lazy token ring architecture, that allows overlapping the charging cycles of multiple phases as well as simultaneous activation of all phases to handle the(More)