§16§Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months: This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. I, 1980; some older Volume 27 contains literature published in 1980 and received before August literature whic §16§h was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bouska, Prague, who surveyed journals and publications in Czech and supplied us with abstracts in English. §04§Concordance Relation: ICSU-AB - AAA.- Abbreviations.- Periodicals, Proceedings, Books, Activities.- Applied Mathematics, Physics.- Astronomical Instruments and Techniques.- Positional Astronomy, Celestial Mechanics.- Space Research.- Theoretical Astrophysics.- Sun.- Earth.- Planetary System.- Stars.- Interstellar Matter, Nebulae.- Radio Sources, X-ray Sources, Cosmic Radiation.- Stellar Systems, Galaxy, Extragalactic Objects, Cosmology.- Author Index. §01§Wilfried Hofmann, Universitätsprofessor für Elektrische Maschinen und Antriebe an der TU Dresden lehrt und forscht auf den Gebieten moderner Drehfeldmaschinen, Antriebstechnik, Industrieelektronik und Mechatronik (Magnetlagertechnik) insbesondere für Anwendungen erneuerbarer Energien (Windenergie) und alternativer Antriebe (Hybrid- und Elektroauto). Er ist Mitglied der Sächsischen Akademie der Wissenschaften und Mitglied bzw. Mitherausgeber nahmhafter Fachzeitschriften wie der European Transaction on Electrical Power (Wiley 〓her Archiv für Elektrotechnik (Springer).
