John Morrell

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The Segway Robotic Mobility Platform (RMP) is a new mobile robotic platform based on the self-balancing Segway Human Transporter (HT). The Segway RMP is faster, cheaper, and more agile than existing comparable platforms. It is also rugged, has a small footprint, a zero turning radius, and yet can carry a greater payload. The new geometry of the platform(More)
Since 1994 Econnect has, in conjunction with Northern Electric PLC, investigated the use of consumer load control as a new and innovative method to actively regulate distribution system voltage when affected by the operation of embedded generators [1],[2]. There are a number of issues that can limit the installed capacity of embedded generators; these are(More)
In this paper, we describe the design and evaluation of a vibrotactile driver's seat that is used to display spatial information during two driving tasks. Many studies have recently shown the effectiveness of haptic and vibrotactile feedback to augment collision warning systems in automobiles. Simultaneously, driver distraction and situational awareness(More)
In this paper we present an energy-based algorithm to minimize limit cycles in dynamically balancing wheeled inverted pendulum (IP) machines. Because the algorithm is not based on absolute values of parameters, the performance is robust and accounts for mechanical reconfiguration and wear. The effects of phenomena such as drive-train friction, rolling(More)
With the plethora of haptic devices that are commercially available today, the question often arises: what device is “good enough” for a given application? Since haptics technology is being increasingly used for different applications such as computer games, surgical simulators, mobile phones etc., there is a clear need to understand hardware(More)
PURPOSE To compare the clinical outcomes in overweight women with those of a group of normal-weight women 4 to 11 years after arthroscopic debridement of the knee. METHODS A questionnaire containing the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), the short form health survey SF-36, and a survey regarding satisfaction with(More)
Mycobacteriophages infect members of the Mycobacterium genus in the phylum Actinobacteria and exhibit remarkable diversity. Genome analysis groups the thousands of known mycobacteriophages into clusters, of which the B1 subcluster is currently the third most populous. We report the complete genome sequences of five additional members of the B1 subcluster.
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