David Karl

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We compare the performance of five indices of retinal vessel tortuosity against sampling rates of vessel centerlines. We consider distance measure, tortuosity density, two curvature-based measures, and a recently introduced slope-chain coding for general curves, never before assessed comparatively with retinal vessels. To enable replication of our results,(More)
Preface In your hands you hold the result of three years of hard labor in the science mine, materialized in this PhD dissertation. i Acknowledgements Many people have helped and supported me to get where I am today. A big thanks goes to my extended family-especially my mother Lena and my father Håkan-and to all my friends, of course. Mads Nielsen, for(More)
2 Preface The Hawaii Ocean Time-series (HOT) project has been making repeated observations of the hydrography, chemistry, and biology at a station north of Hawaii since October 1988, with the objective of describing the oceanography at a site representative of the central north Pacific Ocean. Cruises are made approximately once a month to the HOT deep-water(More)
ii We certify that we have read this thesis and that, in our opinion, it is satisfactory in scope and quality as a thesis for the degree of Master of Science in Oceanography.
  • Luis Tupas, Fernando Santiago-Mandujano, Dale Hebel, Eric Firing, Frederick Bingham, Roger Lukas +1 other
  • 1999
Preface Scientists working within the Hawaii Ocean Time-series (HOT) project have been making repeated observations of the hydrography, chemistry and biology at a station north of Oahu, Hawaii since October 1988. The objective of this research is to provide a comprehensive description of the ocean at a site representative of the central North Pacific(More)
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