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  • 1
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    Warsaw, Berlin : De Gruyter Open
    Keywords: hydrology ; hydraulics ; oceanography ; meteorology ; environmental sciences
    Description / Table of Contents: Natural hazards and anthropic activities threaten the human environment. The gathering of field data is needed so as to quantify the impact of such activities. To gather the necessary data researchers nowadays use a great variety of new instruments based on electronics. Yet, the working principles of this new instrumentation might not be well understood by some potential users. All operators of these new tools must gain proper insight so as to be able to judge whether the instrument is selected appropriately and functions adequately. This book attempts to demonstrate some characteristics that are not easy to understand by the uninitiated in the use of electronic instruments. The material presented in this book was prepared with the purpose of reflecting the technological changes that have occurred in environmental modern instrumentation in the last few decades. The book is intended for students of hydrology, hydraulics, oceanography, meteorology and environmental sciences. Basic concepts of electronics, special physics principles and signal processing are introduced in the first chapters in order to enable the reader to follow the topics developed in the book, without any prior knowledge of these matters. The instruments are explained in detail and several examples are introduced to show their measuring limitations. Enough mathematical fundamentals are given to allow the reader to reach a good quantitative knowledge.
    Pages: Online-Ressource (XXI, 433 Seiten)
    ISBN: 9783110401721
    Language: English
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  • 2
    Keywords: astrophysics ; gamma rays ; gamma radiation
    Description / Table of Contents: This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012.The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving our knowledge of the celestial objects, including Earth.The book contains three parts.The first part is titled “Physical bases and new challenges in high resolution imaging“. This part draws a picture of some of the high angular resolution instruments of the near to far future, and of the issues to overcome to make this picture real. It deals with hypertelescopes, optical interferometry, adaptive optics, wavefront coding, and with polychromatic astrophysical models.The point of view of the articles of the second part, titled “Physical models and data processing“ embraces not only the description of data using physical modeling, but also the resulting data processing in radio and optical interferometry, including hypertelescopes.The third part is titled “Statistical models in signal and image processing“. These contributions cover past and recent developments in multiresolution analysis, Bayesian modeling, sparsity, convex optimization and hyperspectral data.While reading, the alert reader will notice that the successful realization of future observation technologies and the best extraction of the astrophysical information encapsulated in their data involve the joint expertise of several research communities. The various articles collected in this book may contribute to such a synergy.
    Pages: Online-Ressource (XXV, 675 Seiten) , Illustrationen, Diagramme
    ISBN: 9782759810024
    Language: English
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  • 3
    Keywords: Universe ; oxygen ; chemical evolution
    Description / Table of Contents: This book, written by a group of specialists in the different areas involved, summarises what we understand of the production and distribution of oxygen, the most abundant metal in the Universe. After presenting the methods of oxygen abundance determination in various media, it traces a panorama of oxygen in the Universe, describes the mechanisms and sites of oxygen production and finally discusses the chemical evolution of oxygen in different galactic and extra galactic contexts. An appendix thoroughly discusses the oxygen atomic data.
    Pages: Online-Ressource (XI, 370 Seiten) , Illustrationen, Diagramme
    ISBN: 9782759807109
    Language: English
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