Paul Harvey

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Room metaphors have become increasingly popular as a basis for CSCW systems. This paper describes how such metaphors might be extended to support large scale communication through the introduction of a spatial model for meditating conversations in virtual computer spaces. The model is described in terms of an abstract mathematical framework and the paper(More)
We present observations of L1014, a dense core in the Cygnus region previously thought to be starless, but data from the Spitzer Space Telescope shows the presence of an embedded source. We propose a model for this source that includes a cold core, heated by the interstellar radiation field, and a low-luminosity internal source. The low luminosity of the(More)
The c2d Spitzer Legacy project obtained images and photometry with both IRAC and MIPS instruments for five large, nearby molecular clouds. Three of the clouds were also mapped in dust continuum emission at 1.1 mm, and optical spectroscopy has been obtained for some clouds. This paper combines information drawn from studies of individual clouds into a(More)
With the goal to study the physical and chemical evolution of ices in solar-mass systems, a spectral survey is conducted of a sample of 41 low luminosity YSOs (L ∼ 0.1 − 10 L ⊙) using 5–38 µm Spitzer Space Telescope and 3–4 µm ground-based spectra. The sample is complemented with previously published Spitzer spectra of background stars and with ISO spectra(More)
Virtual world metaphors are becoming increasingly popular as a basis for collaborative systems (i.e. Groupware and Computer Supported Cooperative Work). This paper describes how such metaphors might be extended to support communication on a large scale through the introduction of a spatial model for meditating interaction in virtual computer spaces. Key(More)
To support the programming of Wireless Sensor Networks, a number of unconventional programming models have evolved, in particular the event-based model. These models are non-intuitive to programmers due to the introduction of unnecessary, non-intrinsic complexity. Component-based languages like Insense can eliminate much of this unnecessary complexity via(More)
The Insense VM is a specialised Java virtual machine for running Insense programs on wireless sensor nodes. The VM runs on top of InceOS, a purpose-built operating system. A split VM architecture is used, in which Insense programs are compiled to Java classes, then linked and compacted on a more powerful machine into a form suitable for execution by the VM.(More)
GPU and multicore hardware architectures are commonly used in many different application areas to accelerate problem solutions relative to single CPU architectures. The typical approach to accessing these hardware architectures requires embedding logic into the programming language used to construct the application; the two primary forms of embedding are:(More)
A telemedicine system is described for monitoring vital signs and general health indicators of patients with cardiac and diabetic conditions. Telemetry from wireless sensors and readings from other instruments are combined into a comprehensive set of measured patient parameters. Using a combination of mobile device applications and web browser, the data can(More)