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Successful Deployment (successful + deployment)

Distribution by Scientific Domains
Medical Sciences50%

Selected Abstracts

A quality-of-service-based framework for creating distributed heterogeneous software components

CONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 12 2002
Rajeev R. Raje
Abstract Component-based software development offers a promising solution for taming the complexity found in today's distributed applications. Today's and future distributed software systems will certainly require combining heterogeneous software components that are geographically dispersed. For the successful deployment of such a software system, it is necessary that its realization, based on assembling heterogeneous components, not only meets the functional requirements, but also satisfies the non-functional criteria such as the desired quality of service (QoS). In this paper, a framework based on the notions of a meta-component model, a generative domain model and QoS parameters is described. A formal specification based on two-level grammar is used to represent these notions in a tightly integrated way so that QoS becomes a part of the generative domain model. A simple case study is described in the context of this framework. Copyright © 2002 John Wiley & Sons, Ltd. [source]

Generation and visualization of large-scale three-dimensional reconstructions from underwater robotic surveys

JOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 1 2010
Matthew Johnson-Roberson
Robust, scalable simultaneous localization and mapping (SLAM) algorithms support the successful deployment of robots in real-world applications. In many cases these platforms deliver vast amounts of sensor data from large-scale, unstructured environments. These data may be difficult to interpret by end users without further processing and suitable visualization tools. We present a robust, automated system for large-scale three-dimensional (3D) reconstruction and visualization that takes stereo imagery from an autonomous underwater vehicle (AUV) and SLAM-based vehicle poses to deliver detailed 3D models of the seafloor in the form of textured polygonal meshes. Our system must cope with thousands of images, lighting conditions that create visual seams when texturing, and possible inconsistencies between stereo meshes arising from errors in calibration, triangulation, and navigation. Our approach breaks down the problem into manageable stages by first estimating local structure and then combining these estimates to recover a composite georeferenced structure using SLAM-based vehicle pose estimates. A texture-mapped surface at multiple scales is then generated that is interactively presented to the user through a visualization engine. We adapt established solutions when possible, with an emphasis on quickly delivering approximate yet visually consistent reconstructions on standard computing hardware. This allows scientists on a research cruise to use our system to design follow-up deployments of the AUV and complementary instruments. To date, this system has been tested on several research cruises in Australian waters and has been used to reliably generate and visualize reconstructions for more than 60 dives covering diverse habitats and representing hundreds of linear kilometers of survey. © 2009 Wiley Periodicals, Inc. [source]

Protected Carotid Stenting in High-Risk Patients: Results of the SpideRX Arm of the Carotid Revascularization with ev3 Arterial Technology Evolution Trial

JOURNAL OF INTERVENTIONAL CARDIOLOGY, Issue 5 2010
ROBERT D. SAFIAN M.D.
Purpose:,A prospective nonrandomized multicenter registry of 160 patients with severe carotid stenosis and high-risk features for carotid endarterectomy was conducted during the 3-month period from March to May 2005. Methods:,Carotid artery stenting (CAS) was performed with the SpideRXÔ Embolic Protection System (ev3, Inc., Plymouth, MN, USA) as part of an investigational device exemption from the Food and Drug Administration. Results:,The primary end-point of major adverse cardiac and cerebrovascular events at 30 days after CAS was observed in nine patients (5.6%), including death in four patients (2.5%), nonfatal stroke in five patients (3.1%), and nonfatal myocardial infarction in one patient (0.6%). A secondary end-point of technical success (defined as successful deployment of all devices, filter retrieval, and final diameter stenosis <50%) was achieved in 156 of 160 patients (97.5%). The only independent predictor of death or stroke at 30 days was baseline stenosis severity (P < 0.05). Conclusion:,CAS with distal embolic protection using the SpideRXÔ Embolic Protection System is a reasonable alternative for revascularization of some high-risk patients with severe carotid stenosis. (J Interven Cardiol 2010;23:491,498) [source]

Decision Support Technology in Knowledge Translation

ACADEMIC EMERGENCY MEDICINE, Issue 11 2007
Brian R. Holroyd MD
Information technologies, and specifically clinical decision support systems (CDSSs), are tools that can support the process of knowledge translation in the delivery of emergency department (ED) care. It is essential that during the implementation process, careful consideration be given to the workflow and culture of the ED environment where the system is to be utilized. Despite significant literature addressing factors contributing to successful deployment of these systems, the process is frequently problematic. Careful research and analysis are essential to evaluate the impact of the CDSS on the delivery of ED care, its influence on the health care providers, and the impact of the CDSS on clinical decision-making processes and information behaviors. The logistical and educational implications of CDSSs in the ED must also be considered. The specialty of emergency medicine must actively collaborate with other stakeholders in the design, implementation, and evaluation of CDSSs that will be utilized during the delivery of care to our patients. [source]