Table of Contents

Contains the table of contents

Table of Contents

Contains the table of contents

Electromagnetic Wave Theory and Applications

Contains reports on eleven research projects.Joint Services Electronics Program (Contract DAAG29-83-K-0003)Joint Services Electronics Program (Contract DAAL03-86-K-0002)National Science Foundation (Grant ECS82-03390)National Science Foundation (Grant ECS85-04381)Schlumberger-Doll Research CenterNational Aeronautics and Space Administration (Contract NAG 5-141)National Aeronautics and Space Administration (Contract NAS 5-26861)National Aeronautics and Space Administration (Contract NAG 5-270)U.S. Navy - Office of Naval Research (Contract N00014-83-K-0258)National Aeronautics and Space Administration (Contract NAG 5-725)International Business Machines, Inc.Lincoln Laborator

Electromagnetic Wave Theory and Applications

Contains reports on twelve research projects.Joint Services Electronics Program (Contract DAALO3-86-K-0002)National Science Foundation (Grant ECS 85-04381)National Aeronautics and Space Administration/Goddard Space Flight Center (Contract NAG5-270)National Aeronautics and Space Administration/Goddard Space Flight Center (Contract NAG5-725)U.S. Navy - Office of Naval Research (Contract N00014-83-K-0258)U.S. Navy - Office of Naval Research (Contract N00014-86-K-0533)U.S. Army - Research Office Durham (Contract DAAG29-85-K-0079)International Business Machines, Inc.National Aeronautics and Space Administration/Goddard Space Flight Center (Contract NAG5-269)Simulation TechnologiesSchlumberger-Doll Researc

Empirical Model of the Inner Magnetosphere H+ Pitch Angle Distributions

An empirical model is presented in order to describe the pitch angle distributions of H+ particles in inner magnetosphere. The data analysis is based on three-year observations made by the AMPTE/CCE/CHEM instrument in the energy range 1-300 keV and in the L-shell range 3-9, using the average proton fluxes with AE < 100 nT. The model consists of a multi-parametric functional form, that depends on pitch angle, energy, L-shell and a few independent factors. The factors are determined for every magnetic local time. This is the first model, able to accurately reproduce the average proton pitch angle distributions in the whole inner magnetosphere, revealing interesting statistical features. Many of these features have been already evidenced by previous studies and can be explained by processes theoretically interpreted. Furthermore, the model outlines some new features never analyzed before

Signal enhancement of surface scattered underwater sound.

http://archive.org/details/signalenhancemen00tou

Wireless: Radio, Revolution, and the Mexican State, 1897-1938

This dissertation explores the interplay of early radio technology and twentieth-century state power in Mexico. It argues that wireless technology was crucial to government attempts at incorporating frontiers, foreign policy, the outcome of the Mexican Revolution, and the formation of the single-party state that ruled from 1929 to 2000. Examining radio development in Mexico is especially useful because political leaders first incorporated the technology immediately preceding a fractious revolution turned civil war. The subsequent dissolution and reconsolidation of the political order shows how wireless technology affected new attempts at state building during the first half of the twentieth century. Initially used as a tool of centralization, trade, and military domination, the Revolution proved that in the hands of insurrectionists and foreigners, radio could also be a tool of decentralization. The Revolution intensified the tendency of leaders to focus on the medium's military potential as warring factions incorporated wireless devices to advance their causes. The destabilizing potential of the technology pushed the victors to pursue a policy of strict surveillance and regulation over radio, provoking heightened attempts at centralization and monopolization. At the exact time that the warfare wound down, advancements in wireless technology gave rise to a more expansive form of communication--broadcasting. Radio was no longer used solely as a point-to-point tool of generals and communications officers; it had become the first electronic form of mass media, a crucial medium for integrating the general population across the national territory by means of generating consent, and at the same moment that a revolutionary government was attempting to consolidate its control militarily and culturally. These coinciding processes helped establish populist politics in Mexico earlier than in other Latin American nations