| Hyperactivated Rabbit Sperm Cell Motility Parameters |
MAR 95 |
39 pages |
| Authors:
B. A. Bodt; R. J. Young; EDGEWOOD RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
 | A variety of statistical procedures was used to analyze the motility parameters of separate populations of hyperactivated and non-hyperactivated rabbit sperm cells. The parameter Wobble (WOB) was the most efficient in classifying hyperactivation. In combination with Curvilinear Velocity (VC), at least 98% of the cells were correctly classified as either hyperactivated or non- hyperactivated. The threshold values for the two motility parameters were specific for the instrument used to measure ... |
|
| Effect of Metals on the Development of Hyperactivated Motility by Rabbit Sperm Cells |
NOV 94 |
61 pages |
| Authors:
R. J. Young; B. A. Bodt; D. H. Heitkamp; EDGEWOOD RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| Rabbit sperm acquire motion patterns mimicking hyperactivated motility upon incubation in medium M. Lead and cadmium, at concentrations present in seminal plasma of men exposed to the metals, prevented development of these motion patterns in a concentration dependent manner. Nonhyperactivated motility was unaffected. Zinc and mercury, at concentrations that did not inhibit motility, decreased the percentage of sperm with motions that mimicked hyperactivated motility over time, but the decrease was ... |
|
| Evaluation of Colorimetric Analysis for Chemical Agent Resistant Coating (CARC) Testing |
FEB 85 |
|
| Authors:
B. A. Bodt; J. Thomas; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
 | The Physical Protection Directorate (PPD) of the Chemical Research and Development Command (CRDC) requested that the Ballistic Research Laboratory (BRL) provide statistical assistance in designing tests to identify sources of variation in agent resistance testing. The first experiment was designed to determine accuracy, precision, and also variation due to operator, produced by the colorimetric analysis of agents. Two agents were considered in the tests, HD and GD. Results showed the ... |
|
| Construction of Approximate Confidence Intervals for Probability-of-Kill via the Bootstrap |
JUL 1984 |
31 pages |
| Authors:
M. S. Taylor; B. A. Bodt; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The bootstrap, a computer-intensive procedure for data analysis, was applied to an estimation problem to enable a statement to be made about the variability inherent in a probability-of-kill estimate P sub k. The bootstrap was applied to a stratified sample rather than a simple random sample and its performance evaluated in this framework, first in an abstract situation where the parameter P sub k was known and then in three ... |
|
| Statistical Modeling of Railroad Safety Performance |
SEP 1983 |
|
| Authors:
B. A. Bodt; J. Thomas; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| In recent years the Department of Transportation and the Association of American Railroads have become concerned over the safety performance of this nation's railroads. Recent statistics showed that the frequency of accidents was alarmingly high. Acting on this concern, the D.O.T. asked the Ballistic Research Laboratory to determine how railroads could be made safer. One approach to this problem would be to develop a mathematical model which would allow a ... |
|
Reports by Author
