Author: Dennis E. Smith Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
Statistical impact acceleration injury prediction models are developed for the head/neck segment from data obtained during 68 -G sub x accelerator runs. These runs involved subhuman primates (Rhesus monkeys) with securely restrained torso and unrestrained head. The data was collected by the Naval Biodynamics Laboratory (NBDL) as part of its research effort on acceleration impact injury prevention. Three classes of prediction models are constructed, one based on sled profile variables, another based on head dynamic response variables only, and the third comprised of the combined set of independent variables. The model predictions are compared with the observed results to evaluate performance. (Author).
Author: Dennis E. Smith Publisher: ISBN: Category : Languages : en Pages : 35
Book Description
This report considers the application of an impact acceleration injury prediction model to observed data from a set of twenty-eight -G sub x accelerator runs involving subhuman primates (Rhesus monkeys) with securely restrained torso and unrestrained head. The data was collected by the Naval Aerospace Medical Research Laboratory (NAMRL) Detachment as part of its research effort on acceleration impact injury prevention. Using a common data base, two different models were constructed, one based on sled profile variables and the other based on head dynamic response variables. Although the latter model provided a reasonable fit given the small size of the data set, the other model (based on sled profile variables) resulted in a much better fit. Possible explanations for this seemingly anomalous result are listed and additional accelerator runs are suggested. (Author).
Author: Kevin C. Burns Publisher: ISBN: Category : Languages : en Pages : 20
Book Description
Statistical impact acceleration injury prediction models are developed using data from 23 high-level -G sub X acceleration runs. These runs involve Rhesus monkeys with securely restrained torsos and unrestrained heads. The models are based on peak sled acceleration and initial head conditions. The model predictions are compared with those given in an earlier report based on different data and an estimate of Fisher's information matrix is used to evaluate the relative worth of the two data bases. (Author).
Author: Carl A. Mauro Publisher: ISBN: Category : Languages : en Pages : 48
Book Description
Since 1974, the Naval Biodynamics Laboratory (NBDL) has collected, as part of its research effort on acceleration impact injury prevention, an extensive data base from -G sub x accelerator runs on Rhesus subjects. Over this time period, Desmatics, Inc. has been actively involved in the development of statistically based models to predict injury in Rhesus subjects resulting from indirect head/neck impact acceleration in the -X direction. The objectives of the present technical report are: (1) to summarize, update, and consolidate the Desmatics modeling efforts for fatal injury; (2) to investigate extending the injury prediction models to include nonfatal injury criteria; and (3) to evaluate the accuracy and validity of the prediction models obtained in the modeling efforts.
Author: Dennis E. Smith Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
This technical report describes the construction of impact acceleration injury prediction models from a set of twenty-eight -G sub x accelerator runs involving Rhesus monkeys with securely restrained torso and unrestrained head. Peak torque and force variables measured during these runs were used to predict injury likelihood. The relative contribution of these variables was examined with respect to the original and a modified version of the data set. Two possible prediction models were used to construct two critical envelopes, i.e., those values of the variables for which the predicted probability of injury (or fatality) is less than or equal to some specified probability. The preferred model was identified and discussed. (Author).
Author: Dennis E. Smith Publisher: ISBN: Category : Languages : en Pages : 31
Book Description
This report describes a statistical approach to development of a human impact acceleration injury prediction model based on experimental data obtained from human analogs. Also discussed in the use of preinjury criteria to provide more accurate estimates of model parameters. (Author).
Author: Dennis E. Smith Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
The report describes an ongoing research investigation of statistical aspects underlying development of mathematical models of human impact acceleration dynamic response and injury. Particular attention is paid to the requirements and constraints imposed on human accelerator runs.
Author: Publisher: ISBN: Category : Aviation medicine Languages : en Pages : 344
Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into NASA scientific and technical information system and announced in Scientific and Technical Aerospace Reports (STAR), International Aerospace Abstracts (IAA).
Author: Dennis E. Smith
Author: Dennis E. Smith
Author: Kevin C. Burns
Author: Carl A. Mauro
Author: Dennis E. Smith
Author: Dennis E. Smith
Author: 
Author: Dennis E. Smith
Author: Dennis E. Smith
Author: