Adaptive processing for LANDSAT data

Analytical and test results on the use of adaptive processing on LANDSAT data are presented. The Kalman filter was used as a framework to contain different adapting techniques. When LANDSAT MSS data were used all of the modifications made to the Kalman filter performed the functions for which they were designed. It was found that adaptive processing could provide compensation for incorrect signature means, within limits. However, if the data were such that poor classification accuracy would be obtained when the correct means were used, then adaptive processing would not improve the accuracy and might well lower it even further

Discrimination techniques employing both reflective and thermal multispectral signals

Recent improvements in remote sensor technology carry implications for data processing. Multispectral line scanners now exist that can collect data simultaneously and in registration in multiple channels at both reflective and thermal (emissive) wavelengths. Progress in dealing with two resultant recognition processing problems is discussed: (1) More channels mean higher processing costs; to combat these costs, a new and faster procedure for selecting subsets of channels has been developed. (2) Differences between thermal and reflective characteristics influence recognition processing; to illustrate the magnitude of these differences, some explanatory calculations are presented. Also introduced, is a different way to process multispectral scanner data, namely, radiation balance mapping and related procedures. Techniques and potentials are discussed and examples presented

Adaptive Leadership Practices: High School Leadership in Maine During the COVID-19 Crisis

This research focuses on leadership decisions by high school administrators in Maine in response to school closures and subsequent reopening plans due the Covid-19 pandemic. The purpose of this study was to learn the degree to which adaptive leadership was used as a leadership approach in response to a unique, complex and dynamic set of challenges, and to discover how the theories of constructive development influenced administrators’ comfort with adaptive work. Adaptive leadership is identified as the focus for this study based on the unprecedented magnitude of adaptive challenges caused by the Covid-19 pandemic for school systems throughout the state of Maine. High schools were intentionally chosen as the environment for inquiry due to organizational dynamics this study identifies as a barrier to adaptive leadership (Bowles & Gintis, 1978). To understand how high school administrators led during the Covid-19 crisis, the researcher interviewed fourteen principals throughout Maine using a two-part interview protocol. The first part focused on the administrator’s professional history and development as a school leader, while the second part was conducted to better understand how administrators implemented collaborative and adaptive leadership strategies from the months of March 2020 to the reopening of schools. Interviews were transcribed and coded for emerging themes related to adaptive leadership and cognitive development theory

Information extraction techniques for multispectral scanner data

The applicability of recognition-processing procedures for multispectral scanner data from areas and conditions used for programming the recognition computers to other data from different areas viewed under different measurement conditions was studied. The reflective spectral region approximately 0.3 to 3.0 micrometers is considered. A potential application of such techniques is in conducting area surveys. Work in three general areas is reported: (1) Nature of sources of systematic variation in multispectral scanner radiation signals, (2) An investigation of various techniques for overcoming systematic variations in scanner data; (3) The use of decision rules based upon empirical distributions of scanner signals rather than upon the usually assumed multivariate normal (Gaussian) signal distributions

Flight investigation of the VFR and IFR landing approach characteristics and terminal area airspace requirements for a light STOL airplane

A flight research program was conducted to determine the terminal area instrument flight capabilities of a light STOL airplane. Simulated (hooded) instrument landing approaches were made using steep single-segment and two-segment glide slopes. A brief investigation was also made of the visual flight terminal area capabilities of the aircraft. The results indicated that the airplane could be flown on a 7 deg glide-slope ILS-type approach in still air with an adequate 3 deg margin for downward correction