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Author : Gerardus Dingeman Bouw
Publisher :
ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (643 download)
Download or read book An Infrared Spectral Classification System written by Gerardus Dingeman Bouw and published by . This book was released on 1976 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gerardus D. Bouw
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (37 download)
Download or read book An Infrared Spectral Classification Systems written by Gerardus D. Bouw and published by . This book was released on 1973 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard O. Gray
Publisher : Princeton University Press
ISBN 13 : 1400833361
Total Pages : 611 pages
Book Rating : 4.4/5 (8 download)
Download or read book Stellar Spectral Classification written by Richard O. Gray and published by Princeton University Press. This book was released on 2021-06-08 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading experts in the field, Stellar Spectral Classification is the only book to comprehensively discuss both the foundations and most up-to-date techniques of MK and other spectral classification systems. Definitive and encyclopedic, the book introduces the astrophysics of spectroscopy, reviews the entire field of stellar astronomy, and shows how the well-tested methods of spectral classification are a powerful discovery tool for graduate students and researchers working in astronomy and astrophysics. The book begins with a historical survey, followed by chapters discussing the entire range of stellar phenomena, from brown dwarfs to supernovae. The authors account for advances in the field, including the addition of the L and T dwarf classes; the revision of the carbon star, Wolf-Rayet, and white dwarf classification schemes; and the application of neural nets to spectral classification. Copious figures illustrate the morphology of stellar spectra, and the book incorporates recent discoveries from earth-based and satellite data. Many examples of spectra are given in the red, ultraviolet, and infrared regions, as well as in the traditional blue-violet optical region, all of which are useful for researchers identifying stellar and galactic spectra. This essential reference includes a glossary, handy appendixes and tables, an index, and a Web-based resource of spectra. In addition to the authors, the contributors are Adam J. Burgasser, Margaret M. Hanson, J. Davy Kirkpatrick, and Nolan R. Walborn.
Author : Sidney Bailey Parsons
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (35 download)
Download or read book Spectral Classification in the Near Infrared written by Sidney Bailey Parsons and published by . This book was released on 1964 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (946 download)
Download or read book Infrared Spectral Classification with Artificial Neural Networks and Classical Pattern Recognition written by and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared spectroscopy is an important technique for measuring airborne chemicals, for pollution monitoring and to warn of toxic compound releases. Infrared spectroscopy provides both detection and identification of airborne components. Computer-assisted classification tools, including pattern recognition and artificial neural network techniques, have been applied to a collection of infrared spectra of organophosphorus compounds, and these have successfully discriminated commercial pesticide compounds from military nerve agents, precursors, and hydrolysis products. Infrared spectra for previous tests came from a commercial infrared library, with permission, from military laboratories, and from defense contractors. In order to further test such classification tools, additional infrared spectra from the NIST gas-phase infrared library were added to the data set. These additional spectra probed the tendency of the trained classifiers to misidentify unrelated spectra into the trained classes. Infrared spectra used in this effort were gathered from a variety of sources. Different instrument operators collected them at a number of locations, in a variety of spectral data collection designs, and they were delivered in a variety of digital formats. The spectra were treated mathematically to remove artifacts from their collection. Preprocessing techniques used included Fisher weighting and principal component analysis. Classifications were made using the k-nearest neighbor classifier, feed forward neural networks, trained with a variety of techniques, and radial basis function networks. The results from these classification techniques will be reported and compared.
Author :
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (227 download)
Download or read book Instance-Based Classification of Noisy Infrared Spectra written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful systems for classification of real-world data must be tolerant of noise-that is, distortions introduced into the system's model of the real-world domain. Most classification systems are trained on a set of exemplars to identify features of each category and then tested on previously unseen instances. In an instance-based classification system using k-nearest neighbor (k-NN), the training phase is reduced to storing one or more exemplars for each category. During testing, a distance metric is applied to the features of the new instance to determine the k closest exemplars. A voting scheme assigns the category of the modal average to the testing instance. Unlike other methods, k-NN does not try to distinguish between 'relevant' and 'irrelevant' features. Nonetheless, k-NN has been shown to asymptotically approach optimal Bayesian accuracy. This report presents the results of applying k-NN to the problem of classifying chemical agents from noisy infrared absorption spectra (from a suite of chemical agents used elsewhere in the literature). Straightforward nearest-neighbor approaches without editing appear to be tolerant of random noise when the amounts of noise in the training and testing sets are relatively close. Performance of k-NN versus 1-NN approaches can be improved if the training sets are edited so as to exclude degenerate outliers and redundant positive instances.
Author : Carlos Jaschek
Publisher : Cambridge University Press
ISBN 13 : 9780521404211
Total Pages : 446 pages
Book Rating : 4.4/5 (42 download)
Download or read book The Infrared Spectral Region of Stars written by Carlos Jaschek and published by Cambridge University Press. This book was released on 1991-09-19 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a review of the work in progress on the infrared spectral region of stars. The most important previous mission, the Infrared Astronomy Satellite (IRAS) was launched in 1983. Although it was only operating for one year, in that time it surveyed the whole sky for infrared emitters of many different kinds providing a fundamental catalogue of thousands of objects. As a consequence of its success, a new mission to observe the infrared sky is being planned. The Infrared Space Observatory (ISO) is scheduled for a launch in May 1993. It should add substantially to our knowledge of the stars. The volume is based on the proceedings of an international conference held in Montpellier, France. It provided an excellent forum for the experts in the field to get together and evaluate the status of current knowledge and analyse the instrumentation.
Author : Graham R. Hunt
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mid-infrared Spectral Behavior of Igneous Rocks written by Graham R. Hunt and published by . This book was released on 1974 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Midinfrared (6 to 40 micrometers) spectra of igneous rocks and rock-forming minerals are presented. Molecular vibration bands are identified, and the extent of spectral scatter among different samples of the same rock type is illustrated. Conclusions are drawn concerning the extent to which midinfrared spectral behavior of igneous rocks is diagnostic of composition.
Author : CH. Fehrenbach
Publisher : Springer Science & Business Media
ISBN 13 : 9401026270
Total Pages : 318 pages
Book Rating : 4.4/5 (1 download)
Download or read book Spectral Classification and Multicolour Photometry written by CH. Fehrenbach and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr J. Landi Dessy, Director of the Astronomical Observatory, Cordoba, Argentina, invited the International Astronomical Union to hold a Symposium in Cordoba in connection with the celebration of the Centennial of the Cordoba Observatory; the date of foundation is October 24, 1871. He proposed that the Symposium should deal with Spectral Classification and Multicolour Photometry as seven years had elapsed since the Symposium No. 24 in Saltsj6baden, and much development had occurred in the field. The invitation and the proposal were accepted by the IAU, and the Symposium was held in Villa Carlos Paz, near Cordoba, between October 18 and October 24, 1971. It was attended by about 50 scientists representing Argentina, Canada, Chile, Den mark, France, Germany, Italy, Mexico, Sweden, Switzerland, U.K., U.S.A., Vatican City State and Venezuela. The Symposium was divided into four sessions: 1. Classification of slit spectra, 2. Classification of objective-prism spectra, 3. Photometric classification, 4. Catalogues and documentation. It was decided not to include problems of calibration of absolute magnitudes and temperatures of stars but to refer this to a separate symposium. The contents of the present volume follow closely the programmes of the individual sessions of the Symposium. All the participants at the Symposium appreciated the excellent hospitality of their Argentinian hosts and the efficient help given by the staff ofthe Cordoba Observatory.
Author : Daniel Y. Gezari
Publisher :
ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.3/5 (91 download)
Download or read book Catalog of Infrared Observations written by Daniel Y. Gezari and published by . This book was released on 1984 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : João F. Alves
Publisher : Springer
ISBN 13 : 3662402777
Total Pages : 540 pages
Book Rating : 4.6/5 (624 download)
Download or read book The Origins of Stars and Planets: The VLT View written by João F. Alves and published by Springer. This book was released on 2013-12-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many important observational clues about our understanding of how stars and planets form in the interior of molecular clouds have been amassed using recent technological developments. ESO's Very Large Telescope promises to be a major step forward in the investigation of stellar nurseries and infant stars. This volume collects papers from the leaders in this very timely field of astrophysical research. It presents theoretical and a host of observational results and many papers show the plans for future observations.
Author : Brian C. Smith
Publisher : CRC Press
ISBN 13 : 1351438379
Total Pages : 286 pages
Book Rating : 4.3/5 (514 download)
Download or read book Infrared Spectral Interpretation written by Brian C. Smith and published by CRC Press. This book was released on 2018-02-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This author's second volume introduces basic principles of interpreting infrared spectral data, teaching its readers to make sense of the data coming from an infrared spectrometer. Contents include spectra and diagnostic bands for the more common functional groups as well as chapters on polyester spectra and interpretation aids. Discussions include: Science of infrared interpretation Light and molecular vibrations How and why molecules absorb infrared radiation Peak heights, intensities, and widths Hydrocarbons, carbonyl groups, and molecules with C-N bonds Polymers and inorganic molecules The use of atlases, library searching, spectral subtraction, and the Internet in augmenting interpretation Each chapter presents an introduction to the nomenclature and structure of a specific functional group and proceeds with the important diagnostic bands for each group. Infrared Spectral Interpretation serves both novices and experienced practitioners in this field. The author maintains a website and blog with supplemental material. His training course schedule is also available online.
Author : Marek Fidali
Publisher : Infinite Study
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4./5 ( download)
Download or read book Method of classification of global machine conditions based on spectral features of infrared images and classifiers fusion written by Marek Fidali and published by Infinite Study. This book was released on with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes an original method of global machine condition assessment for infrared condition monitoring and diagnostics systems. This method integrates two approaches: the first is processing and analysis of infrared images in the frequency domain by the use of 2D Fourier transform and a set of F-image features, the second uses fusion of classification results obtained independently for F-image features. To find the best condition assessment solution, the two different types of classifiers, k-nearest neighbours and support vector machine, as well as data fusion method based on Dezert–Smarandache theory have been investigated. This method has been verified using infrared images recorded during experiments performed on the laboratory model of rotating machinery. The results obtained during the research confirm that the method could be successfully used for the identification of operational conditions that are difficult to be recognised.
Author : Louis-François Pau
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 294 pages
Book Rating : 4.:/5 (318 download)
Download or read book An Introduction to Infrared Image Acquisition and Classification Systems written by Louis-François Pau and published by John Wiley & Sons. This book was released on 1983-11-21 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an integrated introduction to infrared sensors, propagation, imaging systems, source simulation, image analysis and feature extraction, design and measurement, and hardware considerations. Stresses the main design rules and concepts for infrared image acquisition and infrared source classification systems. .
Author : Daniel Y. Gezari
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.F/5 ( download)
Download or read book Catalog of Infrared Observations: Appendixes written by Daniel Y. Gezari and published by . This book was released on 1987 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans Ulrich Käufl
Publisher : Springer Science & Business Media
ISBN 13 : 9783540252566
Total Pages : 588 pages
Book Rating : 4.2/5 (525 download)
Download or read book High Resolution Infrared Spectroscopy in Astronomy written by Hans Ulrich Käufl and published by Springer Science & Business Media. This book was released on 2005-07-18 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two specialized new instruments for ESO's VLT, VISIR and CRIRES, spawned the idea for this workshop. CRIRES is a dedicated very high resolution infrared spectrograph; VISIR features a high resolution spectroscopic mode. Together, the instruments combine the sensitivity of an 8m-telescope with the now well-established reliability of VLT-facility instruments. High resolution here means that lines in cool stellar atmospheres and HII-regions can be resolved. The astrophysical topics discussed in this rather specialized workshop range from the inner solar system to active galactic nuclei. There are many possibilities for new discoveries with these instruments, but the unique capability, which becomes available through high-resolution infrared spectroscopy, is the observation of molecular rotational-vibrational transitions in many astrophysical environments. Particularly interesting and surprising in this context, many papers on modeling and laboratory spectroscopy at the workshop appear to indicate that astronomical observations are lagging a bit behind in this field. The papers are an interesting mix of reports from existing high resolution facilities, reports on modeling efforts of synthetic spectra and reports on laboratory spectra. In this sense, a fruitful exchange between molecular physics and astronomy was again accomplished and is documented in this volume.
Author : Ian S. Glass
Publisher : Cambridge University Press
ISBN 13 : 9780521633857
Total Pages : 200 pages
Book Rating : 4.6/5 (338 download)
Download or read book Handbook of Infrared Astronomy written by Ian S. Glass and published by Cambridge University Press. This book was released on 1999-08-13 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear and concise practical handbook on all aspects of infrared astronomy, for graduate students, researchers and keen amateurs.
