Laurence J. Edwards

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The Autonomy and Robotics Area (ARA) at NASA Ames Research Center has investigated the use of various types of Virtual Reality-based operator interfaces to remotely control complex robotic mechanisms. In this paper, we describe the major accomplishments and technology applications of the ARA in this area, and highlight the advantages and issues related to(More)
BACKGROUND AND PURPOSE We sought to improve the reliability of the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) classification of stroke subtype for retrospective use in clinical, health services, and quality of care outcome studies. The TOAST investigators devised a series of 11 definitions to classify patients with ischemic stroke into 5 major(More)
In Summer 2007, we field-tested a robotic survey system at Haughton Crater (Devon Island, Canada). Two NASA Ames K10 planetary rovers performed systematic surveys of several simulated lunar sites, including a roughly 700m x 700m region called Drill Hill. The rovers carried a 3D scanning lidar for topog-raphic mapping and ground penetrating radar to map(More)
Th17 cells are a highly pro-inflammatory T-helper cell subset characterised by the expression of IL17. They have been implicated in a variety of allergic and autoimmune conditions. T-regulatory (Treg) cells, a subset of CD4 cells which express Foxp3, CD25, IL10 and TGFβ, can suppress the activity of Th17 cells. In this study, we show that the circulating(More)
BACKGROUND Cystic fibrosis is a monogenic disease that deranges multiple systems of ion transport in the airways, culminating in chronic infection and destruction of the lung. The introduction of a normal copy of the cystic fibrosis transmembrane conductance regulator (CFTR) gene into the airway epithelium through gene transfer is an attractive approach to(More)
This paper describes the K9 rover operations at the Jet Propulsion Laboratory (JPL) during a dual-rover field experiment involving the NASA Ames Research Center's K9 rover and JPL's FIDO rover in May of 2000. We will describe the use of various ground tools used for sequence generation and the onboard conditional executive.
Since 2004, NASA has been working to return to the Moon. In contrast to the Apollo missions, two key objectives of the current exploration program are to establish surface infrastructure and an outpost. Achieving these objectives will enable long-duration stays and long-distance exploration of the Moon. To do this, robotic systems will be needed to perform(More)
OBJECTIVES The authors report the results of a prospective, placebo-controlled, randomized study to evaluate the effectiveness of 3,4-diaminopyridine (DAP) in patients with Lambert-Eaton myasthenic syndrome (LEMS) and to determine the acute and long-term side effects of DAP. METHODS Twenty-six patients with LEMS completed a two-arm parallel treatment(More)
Introduction: The Mars Orbital Laser Altimeter (MOLA) has significantly advanced the study of the Martian surface by providing geologists with a highly accurate elevation map of the entire planet [1]. However , its limited resolution (463m/pixel at the equator) and localized interpolation artifacts have rendered it insufficient for detailed studies of(More)
Modern NASA planetary exploration missions employ complex systems of hardware and software managed by large teams of engineers and scientists in order to study remote environments. The most complex and successful of these recent projects is the Mars Exploration Rover mission. The Computational Sciences Division at NASA Ames Research Center delivered a 3D(More)