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The paper extends Lindenmayer systems in a manner suitable for simulating the interaction between a developing plant and its environment. The formalism is illustrated by modeling the response of trees to pruning, which yields synthetic images of sculptured plants found in topiary gardens.
Systems with large amounts of computing power and storage are required to simulate very large neural networks capable of tackling complex control problems and real-time emu-lation of the human sensory, language and reasoning systems. General-purpose parallel computers do not have communications, processor and memory architectures optimized for neural… (More)
Through support from the National Institutes of Health's National Center for Research Resources, the Biomedical Informatics Research Network (BIRN) is pioneering the use of advanced cyberinfrastructure for medical research. By synchronizing developments in advanced wide area networking, distributed computing, distributed database federation, and other… (More)
(BIRN), an infrastructure initiative sponsored by the U.S. National Institutes of Health (NIH), fosters large data-and compute-intensive distributed collaborations in biomedical science with information technology innovations (Grethe et al. 2005; Ellisman and Peltier 2004). 1 Currently, BIRN is composed of a collection of three scientific collaboratories… (More)
Introduction Technologies for Reliable Autonomous Control (TRAC) is a DARPA sponsored effort under the Software Enabled Control (SEC) initiative. The goal of T U C is to develop and demonstrate a fundamentally different approach to controlling uninhabited air vehicles (UAVs) that will enable greater mission capability, higher reliability and safety, and… (More)
Over the past decade, the number of Earth orbiters and deep space probes has grown dramatically and is expected to continue in the future as miniaturization technologies drive spacecraft to become more numerous and more complex. This rate of growth has brought a new focus on autonomous and self-preserving systems that depend on fault diagnosis. Although… (More)
BACKGROUND At present, there is no national population-based retinopathy screening programme for people in Ireland who have diabetes, such as those operating in the UK for over a decade. AIM To evaluate a community-based initiative that utilised existing resources in general practice and community optometry/ophthalmology services to provide screening for… (More)