Techniques for Depositing Visible Smoke Trails in the Stratosphere for Measurement of Winds and Turbulence

Techniques for Depositing Visible Smoke Trails in the Stratosphere for Measurement of Winds and Turbulence PDF

Author: William K. Vickery

Publisher:

Published: 1975

Total Pages: 24

ISBN-13:

DOWNLOAD EBOOK →

Air Force Cambridge Research Laboratories conducted two field programs at the White Sands Missile Range to obtain experimental data for the Climatic Impact Assessment Program of the Department of Transportation. These data provide a prediction of the residence time and behavior of exhaust products deposited by supersonic aircraft in the stratosphere. The data were obtained by photographing smoke trails from rockets and aircraft dispensing systems. This report describes the development and flight results of (1) the rocket dispensing system, designed to produce vertical smoke trails over the 12- to 25-km region, and (2) the aircraft dispensing system, designed to produce horizontal trails at 16- and 20-km altitudes.

Measuring and Managing Performance in Organizations

Measuring and Managing Performance in Organizations PDF

Author: Robert Austin

Publisher: Addison-Wesley

Published: 2013-07-15

Total Pages: 286

ISBN-13: 0133488403

DOWNLOAD EBOOK →

This is the digital version of the printed book (Copyright © 1996). Based on an award-winning doctoral thesis at Carnegie Mellon University, Measuring and Managing Performance in Organizations presents a captivating analysis of the perils of performance measurement systems. In the book’s foreword, Peopleware authors Tom DeMarco and Timothy Lister rave, “We believe this is a book that needs to be on the desk of just about anyone who manages anything.” Because people often react with unanticipated sophistication when they are being measured, measurement-based management systems can become dysfunctional, interfering with achievement of intended results. Fortunately, as the author shows, measurement dysfunction follows a pattern that can be identified and avoided. The author’s findings are bolstered by interviews with eight recognized experts in the use of measurement to manage computer software development: David N. Card, of Software Productivity Solutions; Tom DeMarco, of the Atlantic Systems Guild; Capers Jones, of Software Productivity Research; John Musa, of AT&T Bell Laboratories; Daniel J. Paulish, of Siemens Corporate Research; Lawrence H. Putnam, of Quantitative Software Management; E. O. Tilford, Sr., of Fissure; plus the anonymous Expert X. A practical model for analyzing measurement projects solidifies the text–don’t start without it!

Beyond the Visible

Beyond the Visible PDF

Author: Pedro J. Aphalo

Publisher: Helsingin yliopisto

Published: 2012-11-02

Total Pages: 210

ISBN-13: 952108362X

DOWNLOAD EBOOK →

Beyond the Visible: A handbook of best practice in plant UV photobiology presents methods for research on the responses of plants to ultraviolet (UV) radiation. The knowledge needed to make informed decisions about manipulation and quantification of UV radiation is summarized. Practical recommendations for obtaining reliable and relevant data and interpretations are given. The handbook covers research both on terrestrial and aquatic plants and it deals with experimentation on ecological, eco-physiological and physiological questions. The handbook includes 115 figures, mostly in colour, 19 tables and 12 text boxes. It is the result of the activities of COST action FA0906 "UV4growth", and it includes contributions by 17 authors. From the foreword by Dr. Marcel A. K. Jansen: This book ... is an important contribution towards such sound experimental design, promoting both "good practice" in UV-B manipulation, as well as "standardisation" of methodologies. Writing an authoritative book that will steer experimental approaches over the coming years, can not easily be done by an individual, but rather requires the concerted effort of a team of expert scientists. ... This is surely an excellent example of a concerted, Europeanwide activity that will boost the plant UV-B research field in Europe and beyond, for years to come.

Code of Federal Regulations

Code of Federal Regulations PDF

Author:

Publisher:

Published: 1998

Total Pages: 1276

ISBN-13:

DOWNLOAD EBOOK →

Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.

Nulling Interferometers for Space-based High-Contrast Visible Imaging and Measurement of Exoplanetary Environments

Nulling Interferometers for Space-based High-Contrast Visible Imaging and Measurement of Exoplanetary Environments PDF

Author: Brian Hicks

Publisher: Springer Science & Business Media

Published: 2013-10-17

Total Pages: 139

ISBN-13: 1461482119

DOWNLOAD EBOOK →

High-contrast astronomical imaging has progressed significantly in the past decade. Many of these techniques have been laboratory demonstrated to perform at contrast levels adequate for the detection of Solar System-like planets and dust around nearby stars. None of them, however, have been demonstrated in space. The state of the art in high-contrast imaging systems that have been built for space-based observation, the environment best suited for spectroscopic study of exo-Earths, is the nulling interferometer that was flown on the Planetary Imaging Concept Testbed Using a Rocket Experiment (PICTURE). The PICTURE nulling interferometer, built from multiple optical elements, relies on the incorporation of additional dispersive components in order to deliver the broadband performance preferred for faint object imaging. These elements add to the cost, complexity, and misalignment risk of the instrument. The Monolithic Achromatic Nulling Interference Coronagraph (MANIC) Brian Hicks describe in this thesis the first optic of its kind. He has taken the multiple optical element concept described in earlier works from theory to a flyable monolithic optic. Brian has advanced the state of the art in nulling interferometers by improving optical stability and robustness. Following application of the fabrication method described in this work, the design of MANIC also allows for broader band performance at higher contrast than that achieved with the PICTURE nulling interferometer.

Lanterna Rally - Theme by Grace Themes