Atlas fotográfico para busqueda de supernovas: Declinations -200 to +200
Title | Atlas fotográfico para busqueda de supernovas: Declinations -200 to +200 PDF eBook |
Author | Manuel López Alvarez |
Publisher | |
Pages | 444 |
Release | 1990 |
Genre | Galaxies |
ISBN |
Atlas fotográfico para busqueda de supernovas: Declinación, -200 a -900
Title | Atlas fotográfico para busqueda de supernovas: Declinación, -200 a -900 PDF eBook |
Author | Manuel López Alvarez |
Publisher | |
Pages | 202 |
Release | 1987 |
Genre | Galaxies |
ISBN |
Atlas fotográfico para busqueda de supernovas
Title | Atlas fotográfico para busqueda de supernovas PDF eBook |
Author | Manuel López Alvarez |
Publisher | |
Pages | 236 |
Release | 1987 |
Genre | Galaxies |
ISBN |
Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention
Title | Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention PDF eBook |
Author | Clive L. N. Ruggles |
Publisher | Ocarina Books |
Pages | 298 |
Release | 2012 |
Genre | History |
ISBN |
This Thematic Study is a joint venture between ICOMOS, the advisory body to UNESCO on cultural sites, and the International Astronomical Union. It presents an overall vision on astronomical heritage, attempts to identify what constitutes "outstanding universal significance to humankind" in relation to astronomy, and identifies broad issues that could arise in the assessment of cultural properties relating to astronomy. This is the first Thematic Study in any field of science heritage. It is elaborated using examples of properties from around the world, including some already on the World Heritage List or national Tentative Lists. The subject matter ranges from early prehistory to modern astrophysics and space heritage, and also prominently includes dark sky issues and modern observatory sites. An e-version of the Thematic Study was published in June 2010 in time to be presented to the 2010 meeting of UNESCO's World Heritage Committee, where it was duly approved. It has been circulated officially by the WHC to all of UNESCO's National Commissions. This full-colour paperback edition with some updates, and reformatted to new ICOMOS standards, was published in 2011 and is now offered for public sale.
Highlights of Spanish Astrophysics V
Title | Highlights of Spanish Astrophysics V PDF eBook |
Author | Jose M. Diego |
Publisher | Springer Science & Business Media |
Pages | 466 |
Release | 2010-03-18 |
Genre | Science |
ISBN | 3642112501 |
Astronomy is a scienti?c discipline that has developed a rapid and impressive growth in Spain. Thirty years ago, Spain occupied a purely anecdotal presence in the international context, but today it occupies the eighth position in the world in publication of astronomical articles, and, among other successes, owns and op- ates ninety per cent of the world’s largest optical telescope GTC (Gran Telescopio Canarias). The Eighth Scienti?c Meeting of the Spanish Astronomical Society (Sociedad Espanol ̃ a de Astronom ́ a, SEA), held in Santander in July 7–11 2008, whose p- ceedings are in your hands, clearly shows the enthusiasm, motivation and quality of the present Spanish astronomical community. The event brought together 322 participants, who represent almost 50% of Spanish professional astronomers. This percentage, together with the continuously increasing, with respect to previous SEA meetings, number of oral presentations and poster contributions (179 and 127 respectively), con?rms that the SEA conferences have become a point of reference to assess the interests and achievements of astrophysical research in Spain. The most important and current topics of modern Astrophysics were taken into accountat thepreliminarymeeting,aswell as the numberandqualityofparticipants and their contributions, to select the invited speakers and oral contributors. We took a week to enjoy the high quality contributions submitted by Spanish astronomers to the Scienti?c Organizing Committee. The selection was dif?cult. We wish to acknowledge the gentle advice and commitment of the SOC members.
Developing Basic Space Science World-Wide
Title | Developing Basic Space Science World-Wide PDF eBook |
Author | Willem Wamsteker |
Publisher | Springer Science & Business Media |
Pages | 483 |
Release | 2005-12-28 |
Genre | Science |
ISBN | 140202519X |
? J. Andersen Niels Bohr Institute for Astronomy Physics and Geophysics Astronomical Observatory Copenhagen [email protected] The development of astronomy worldwide begins at the roots: Already from childhood, humans of all nations and civilizations seem to share an innate fascination with the sky. Yet, people in different regions of the world have vastly different possibilities for pursuing this interest. In wealthy, industrialised societies the way is open to a school or higher education in science, possibly leading to a career in astronomy or basic or applied space science for the benefit of the country as well as the individual. In other regions, neither the financial nor the trained human resources are sufficient to offer that avenue to the future of the young generation, or those intellectual resources to the development of their country. This book addresses ways and means by which these obstacles can be, if not fully overcome, then at least significantly reduced.
Reflectionless Filters
Title | Reflectionless Filters PDF eBook |
Author | Matthew A. Morgan |
Publisher | Artech House |
Pages | 277 |
Release | 2017-01-31 |
Genre | Technology & Engineering |
ISBN | 1630814059 |
This invaluable resource introduces progressive techniques for the creation of sophisticated reflectionless filter topologies that have identically zero reflection coefficient at all frequencies. Practical implementations are discussed along with their advantages when compared to classical absorptive filters and their benefits in real-world systems such as up/down converters, multiplier chains, broadband amplifiers, analog-to-digital converters, and time-domain applications. This book offers insight into the innovative process of developing reflectionless filters from first principles using both lumped elements and transmission lines. Tools for the creation of reflectionless multiplexers, matched sloped equalizers, and advanced, high-order, and nonplanar topologies are also presented.