Ebook > Ciencia > Química > E. Ziegler: Computer in der Chemie (PDF)

E. Ziegler
Computer in der Chemie [PDF ebook]
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Portada de E. Ziegler: Computer in der Chemie (PDF)

1907-66: 3»791»519 1967-71: 1»314»655 (8. Sammelregister) 6»418»796 1972-76: 1»772»194 (9. Sammelregister) { online 1977 -81: 2»201»680 (10. Sammelregister) 1982- : 1»130»267 (bis Bd. 100; 30. 6. 84) Seit 1965 hat CAS 6»699»392 verschiedene chemische Verbindungen registriert (Stand: 30. 6. 84); dazu kommen noch ca. 1, 5 Mill. Verbindungen, die vor 1965 in der Literatur erschienen sind und z. Z. maschinell erfaßt werden [6]. Wie kann man nun diese Informationsmengen noch mit vertretbarem Auf wand bewältigen? Als etwa Mitte des letzten Jahrhunderts die Zahl der Zeit schriften so groß wurde, daß sie vom einzelnen Wissenschaftler nicht mehr überschaubar war, entstanden die ersten Referatezeitschriften [1 a, 7]. Heute reicht dieses Instrument der Information in seiner gedruckten, manuell zu be nutzenden Form nicht mehr aus. Die Verarbeitung und Speicherung von gro ßen Datenmengen mit Computern liegt auf der Hand [8]. Die heute wichtigste Einsatzform des Computers zur gezielten (Wieder)gewinnung von Information (, Retrieval») durch den (End)benutzer ist die , Online-Recherche».

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Idioma Alemán ● Formato PDF ● ISBN 9783642702945 ● Editor E. Ziegler ● Editorial Springer Berlin Heidelberg ● Publicado 2013 ● Descargable 3 veces ● Divisa EUR ● ID 6381142 ● Protección de copia Adobe DRM

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