TABLE OF CONTENTS Personnel xiv Publications and Reports xviii Introduction GENERAL PHYSICS I. Molecular Beams Calculation of the Cross Section for He3-Roton Scattering in Superfluid Helium II. Microwave Spectroscopy Work Completed Electrical Noise in Superconducting Films III. Radio Astronomy Studies of Water-Vapor Microwave Emission from Infrared Stars IV. Solid-State Microwave Electronics Low-Noise Intermediate -Frequency Amplifiers for 55-GHz Radiometers V, Gravitation Research Balloon Measurements of Far Infrared Background Radiation Electromagnetically Coupled Broadband Gravitational Antenna VI. Electrodynamics of Media Short Pulses Produced by Cavity Dumping of a CO Excited Atmospheric (TEA) Laser Prediction of Gain in CO 2 2 Transversely TEA Lasers PLASMA DYNAMICS VII. Plasmas and Controlled Nuclear Fusion Feedback Stabilization Investigation of a Plasma Gun High-Temperature Plasma Physics Plasma Instabilities Driven by a DC Electric Field QPR No. 105 iii CONTENTS VIII. Applied Plasma Research 105 Active Plasma Systems 105 Effect of Obliqueness between Density Gradient and Magnetic Field on Resonance Cones near the Lower Hybrid Resonance 105 Impedance of Electrostatic Plasma 109 Couplers in an Inhomogeneous Plasma Effects in Solids 112 Nonlinear Plasma Effects in Interactions with Acoustic Waves COMMUNICATION IX. X. SCIENCES AND ENGINEERING Speech Communication 119 MITSYN: A Graphical Notation and System for the Interactive Computer-Aided Specification and Realization of Music and Speech Synthesis and Other (Digital) Signal Processing 123 Speech Analysis by Linear Prediction 133 Linguistics Cognitive Information Processing New High- Speed Multiplier Design XII. XIII. 119 Speech Sound Categorization within Sets by Children How to Apply Phonological Rules XI. 112 Communications Biophysics 143 143 147 147 153 Contourographic Display in Incorporating Hidden Lines 153 Digital Matched Filter for Electrocardiograms 155 Vectorcardiographic Display and Measurement System 159 Cryoprotective Action of Dimethyl Sulphoxide (DMSO) on Homarus Axons 162 Signal Processing 169 Recent Advances in the Theory of Reconstructing Multidimensional Signals from Projections 169 Transient Response of a Varactor-Controlled Oscillator 183 Model for Low-Frequency Atmospheric Noise 186 Author Index QPR No. 105 195