Operative Wound Infection and Its Prevention

Wound infection following operation continues to plague surgeons despite the advent of antibiotics. It has been my impression that operative wounds are poorly cared for at the time of closure, and that prophylactic antibiotics are used ill-advisedly by many surgeons. The literature relaed to these subjects was reviewed and an experiment designed to test my concepts of more adequate topical wound care and proper use of parenteral antibiotics

Shape Analysis of Flight Trajectories Using Neural Networks

The article of record as published may be found at https://doi.org/10.2514/1.I010923The recent widespread implementation of Automatic Dependent Surveillance–Broadcasting (ADS-B) systems on aircraft allows for improved monitoring and air traffic control management. As part of this monitoring, it is important to be able to detect unusual flight trajectories due to weather events, detection avoidance, aircraft malfunction, or other activities that may signal anomalous behavior. Given the large volume of ADS-B data available from aircraft around the world, the ability to automatically determine the shape of the trajectory and identify anomalous behavior is important to reduce the need for human identification and labeling. A neural network model is developed for multicategory classification of the shape of the trajectory using features derived from a large ADS-B data set such as bearing and curvature. The results suggest promise in differentiating common trajectory shapes using key factors, with the accuracy of the classifier being comparable to human accuracy.Center for Multi-Intelligence Studies, Naval Postgraduate Schoo