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Automated Tree Crown Discrimination Using Three-Dimensional Shape Signatures Derived from LiDAR Point Clouds

Description: Discrimination of different tree crowns based on their 3D shapes is essential for a wide range of forestry applications, and, due to its complexity, is a significant challenge. This study presents a modified 3D shape descriptor for the perception of different tree crown shapes in discrete-return LiDAR point clouds. The proposed methodology comprises of five main components, including definition of a local coordinate system, learning salient points, generation of simulated LiDAR point clouds wit… more
Date: May 2018
Creator: Sadeghinaeenifard, Fariba
Item Type: Refine your search to only Thesis or Dissertation

Rediscovery of the Elements

Description: Interactive DVD documenting the research by Dr. James and Virginia Marshall to trace the history of the elements in the periodic table. It includes biographical information on the scientists who discovered each of the elements, notes about each of the elements with photos, periodic tables, maps and photographs of the cities where elements were discovered, a timeline of discoveries, written articles about the research, and other background documentation.
Date: July 2010
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Item Type: Refine your search to only Website
open access

Great Lakes Restoration Initiative Action Plan

Description: This action plan articulates the most significant ecosystem problems for the Great Lakes, and describes efforts to address them. The five areas are toxic substances, invasive species, health and pollution, wildlife and habitat preservation and restoration, and finally a component that covers accountability and evaluation.
Date: February 21, 2010
Creator: United States. Council on Environmental Quality.
Item Type: Refine your search to only Text
open access

State of the Climate in 2009

Description: This report describes observations of precipitation, temperature, and other climatology metrics from different global regions.
Date: June 2010
Creator: Andt, D. S.; Baringer, M. O.; Johnson, M. R.; Alexander, L. V.; Diamond, H. J.; Fogt, R. L. et al.
Item Type: Refine your search to only Text
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