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Communications, technical notes, in-house publications, newspaper clippings, organizational charts, catalogs, training manuals, and other materials related to the career of Alan Bagley, primarily at Hewlett-Packard

Papers pertain to his interest and work in engineering and include drawings, notes, publications, correspondence, reports, plans, financial records, manuals, photographs, and patent files. Subjects include helicopters and polycopters, hydroelectric projects (including that of Paradise, California), the Nitrafix Process [recovery of nitrogen from engine exhaust], turbine generators, vehicles and transportation, and Chicago Stock Yards Research Division files. The collection also includes two films ("Tow Test Films" and "Polycopter Indoors & Outdoors").

• An Overview of Meteorological Data Assimilation
• A Review of Methods for Objective Analysis
• Normal Mode Initialization
• Assimilation of Asynoptic Data and the Initialization Problem
• Applications of Estimation Theory to Numerical Weather Prediction
• Convergence of Assimilation Procedures
• Some Climatological and Energy Budget Calculations Using the FGGE III-b Analyses During January 1979
• Appendix Provisional Report on Calculation of Spatial Covariance and Autocorrelation of the Pressure Field
• A. Eliassen.

One of the main reasons we cannot tell what the weather will be tomorrow is that we do not know accurately enough what the weather is today. Mathematically speaking, numerical weather prediction (NWP) is an initial-value problem for a system of nonlinear partial differential equations in which the necessary initial values are known only incompletely and inaccurately. Data at the initial time of a numerical forecast can be supplemented, however, by observations of the atmos phere over a time interval preceding it. New observing systems, in particular polar-orbiting and geostationary satellites, which are providing observations continuously in time, make is absolutely necess ary to find new and more satisfactory methods of assimilating meteorological observations - for the dual purpose of defining atmospheric states and of issuing forecasts from the states thus defined. FUndamental progress in this area has been made in recent years and this book attempts to give a review and some suggestions for further improvements in the field of meteorological data assimila tion methods. The European Centre for Medium Range Weather Forecasts (ECMWF) every year organises seminars for the benefit of meteorologists and geophysicists of the ECMWF Member states. The 1980 Seminar was devoted to data assimilation methods, and this book contains selected lectures from that seminar. The purpose of the seminar was twofold: it was intended to give a basic introduction to the subject, as well as an overview of the latest developments in the field.

• 1. Glass Laser Physics.-
• 2. Optical and Physical Properties of Laser Glasses.-
• 3. Optical-Pump Sources for Nd:Glass Lasers.-
• 4. Amplified Spontaneous Emission and Parasitic Oscillations in Nd:Glass Amplifiers.-
• 5. Amplifiers for High-Peak-Power Nd:Glass Laser Systems.-
• 6. Damage Effects in High-Peak-Power Nd:Glass Laser Systems.-
• 7. Nonlinear Effects in High-Peak-Power Nd:Glass Laser Systems.-
• 8. The Design of High-Peak-Power Nd:Glass Laser Systems.- Acronyms.- References.
• (source: Nielsen Book Data)