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Full-Text Articles in Life Sciences

A Comparison Of The U.S. Air Force Fitness Test And Sister Services' Combat-Oriented Fitness Tests, Thomas E. Worden Mar 2009

A Comparison Of The U.S. Air Force Fitness Test And Sister Services' Combat-Oriented Fitness Tests, Thomas E. Worden

Theses and Dissertations

This research explores how the United States Air Force Physical Fitness Test (AFPFT) events compare to sister-services' physical fitness test events with respect to their predictability of combat capability. Multiple regression tools, non-parametric analyses, and chi2 contingency table hypothesis testing were utilized to test hypotheses about performances and determine associations between involved variables. AFPFT scores had minimal predictability (adj R2 0.2045) [but improved when raw data replaced scoring sheets, pushups have no maximum, and abdominal circumference and age are removed (adj R2 0.7703)]. Higher Body Mass Index (BMI) predicts higher combat capability (p-value 0.0208). The best two-event …


Statistical Approach To The Characterization And Recognition Of Human Gaits, Derrick M. Chelliah Mar 2008

Statistical Approach To The Characterization And Recognition Of Human Gaits, Derrick M. Chelliah

Theses and Dissertations

This thesis addresses the final portion of a complete process for human gait recognition. The thesis takes as input information that has been generated from videotaping walking individuals and converting their gaits into numerical data that measures the locations of various points on the body through time. Beginning with this data, this thesis uses a variety of mathematical and statistical methods to create identifying signatures for each individual and identify them on the basis of that signature. The end goal is to achieve under controlled laboratory conditions human gait recognition, an identification method which does not require contact or cooperation …


Statistical Approach To Background Subtraction For Production Of High-Quality Silhouettes For Human Gait Recognition, Jennifer J. Samler Sep 2006

Statistical Approach To Background Subtraction For Production Of High-Quality Silhouettes For Human Gait Recognition, Jennifer J. Samler

Theses and Dissertations

This thesis uses a background subtraction to produce high-quality silhouettes for use in human identification by human gait recognition, an identification method which does not require contact with an individual and which can be done from a distance. A statistical method which reduces the noise level is employed resulting in cleaner silhouettes which facilitate identification. The thesis starts with gathering video data of individuals walking normally across a background scene. From there the video is converted into a sequence of images that are stored as joint photographic experts group (jpeg) files. The background is subtracted from each image using a …