This dissertation presents three separate–but related–contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle autonomy, so the emphasis is on automated approaches that can be used in realtime. The three research threads are: i) in situ navigation sensor alignment, ii) dead reckoning t...

This algorithm uses the GPS satellite system for navigation. It is an innovative algorithm, because it employs only the Doppler measurements and starts with a known initial location of the receiver. Initially, this algorithm was developed for fixed point GPS transmitters. In the paper we have successfully attempted to adapt this algorithm for moving satellites. This algorithm appears to perform...

Coronary artery bypass grafting (CABG) is the most commonly performed type of open heart surgery. For an effective revascularisation procedure, the positioning of the bypass graft (distal anastomosis) is of utmost importance. To assist the surgeon in this matter, a surgical navigation system for the open heart has been developed. Prior to surgery, the optimal distal anastomosis site is planned ...

I: Introduction Steve Shafer and Red Whittaker Introduction Accomplishments Personnel Publications 11: NAVLAB: An Autonomous Navigation Testbed K. Dowling, R. Guzikowski, J. Ladd, H. Pangels, J. Singh, and W. Whittaker 111: Vision and Navigation for the Carnegie-Mellon NAVLAB C. Thorpe, M. Heberf, T. Kanade, and S. Shafer IV: The CMU System for Mobile Robot Navigation Y. Goto and A. Stentz 1

this study assessed domestic customers' attitude for website usability and attractiveness in iran petrochemical commercial company (ipcc) in business to business (b2b) market space . a three-phase conceptual scheme for website evaluation is examined based on constructs such as attractiveness, navigation and transaction. a website with aesthetics appeal can help initial attraction, communic...

We identify the key design aspects of a GPS-based system (and in the future, GNSS-based systems) that could contribute to real-time earthquake source determination and tsunami warning systems. Our approach is based on models of both transient and permanent displacement of GPS stations caused by large earthquakes, while considering the effect of GPS errors on inverted earthquake source parameter...

Total hip replacement arthroplasty and hip resurfacing are two of the most successful orthopaedic operations performed worldwide. Critical to the success of these operations is the accurate placement of the components. Correct component alignment reduces mechanical wear and the risk of dislocation. Traditionally, correct component alignment relies on the surgeon referencing from the position of...