8,210 research outputs found
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Lyceum: internet voice groupware for distance learning
This paper describes the design, implementation and deployment of Lyceum, a groupware system providing students and tutors with real time voice conferencing and visual workspace tools, over the standard internet. Lyceum uses a Java client/server architecture to tackle a formidable set of networking requirements: multi-way voice communication with synchronous shared displays, scalable to hundreds of simultaneous users, running over normal modem connections via unknown internet service providers, on home PCs. Additionally, the design had to support multiple courses with different requirements. We describe the interdisciplinary requirements analysis, and iterative design process, by which an academic course team was able to specify and evaluate prototypes. We present the systemĂs architecture, describe the technical successes and failures from LyceumĂs first large scale deployment, and summarise its affordances for interaction and learning
Exploring the importance of reflection in the control room
While currently difficult to measure or explicitly design for, evidence suggests that providing people
with opportunities to reflect on experience must be recognized and valued during safety-critical
work. We provide an insight into reflection as a mechanism that can help to maintain both individual
and team goals. In the control room, reflection can be task-based, critical for the 'smooth' day-to-day
operational performance of a socio-technical system, or can foster learning and organisational change
by enabling new understandings gained from experience. In this position paper we argue that
technology should be designed to support the reflective capacity of people. There are many
interaction designs and artefacts that aim to support problem-solving, but very few that support
self-reflection and group reflection. Traditional paradigms for safety-critical systems have focussed
on ensuring the functional correctness of designs, minimising the time to complete tasks, etc. Work
in the area of user experience design may be of increasing relevance when generating artefacts that
aim to encourage reflection
Numerical study of circle fractal grid perforated plate as a turbulent generator in combustion chamber
Fractal grids can be used to design turbulent flows with low power losses and high
turbulence intensities for intense yet economic mixing over a region of designed length and
location. The introducing circle grid perforated plate is the main aim of this present paper. In this
numerical work, we want to ascertain a new approach in turbulence generators on the structure of
premixes flames using perforated plate fractal-grids pattern. In this paper, we compared circle grid
perforated plate by varies using its diameters, spacing and number of holes on the plate. The result
showed good perceptivity of the fractal generated turbulence and the fractal flow physics. The
turbulent intensity can be increased by a grid with higher blockage ratio
A Flexible Framework for Collaborative Visualization Applications Using Java Spaces
The complexity of modern tasks is rising along with the level of technology. Two techniques commonly used to deal with complexity are collaboration and information visualization. Recently, computer networks have arisen as a powerful means of collaboration, and many new technologies are being developed to better utilize them. Among the newer, more promising of these technologies is Sun Microsystems\u27 JavaSpaces ™, a high-level network programming API. This thesis describes a tool for developing collaborative visualization software using JavaSpaces-an application framework and accompanying toolkit. In addition to a detailed description of the framework, the thesis also describes an application implemented using the framework, discusses the benefits of development under the framework, evaluates the performance of JavaSpaces in the context of the framework, and addresses the issue of network bandwidth limitations, which are a concern when developing visualizations that deal with large data sets
TechNews digests: Jan - Nov 2008
TechNews is a technology, news and analysis service aimed at anyone in the education sector keen to stay informed about technology developments, trends and issues. TechNews focuses on emerging technologies and other technology news. TechNews service : digests september 2004 till May 2010 Analysis pieces and News combined publish every 2 to 3 month
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