Search (87 results, page 1 of 5)

  • × theme_ss:"Datenfernübertragung"
  1. Black, U.: TCP/IP and related protocols (1995) 0.03 
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    Footnote
    Rez. in: Managing information 2(1995) no.4, S.49 (L. Robinson)
  2. Eberl, U.: UMTS++ : Perspektiven (2001) 0.03 
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    Abstract
    In den Forschungslabors reifen bereits Verfahren für kommende Mobilfunkstandards
  3. Petry, W.; Werner, H.-J.: Anwendertraum: Kommunikations- und Retrieval-Software im Vergleich (1993) 0.03 
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    Source
    Cogito. 9(1993) H.2, S.18-22
  4. Duhm, U.: Ring frei zur nächsten Runde (1999) 0.03 
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    Date
    19. 2.1999 20:21:22
  5. Bekavac, B.: Informations- und Kommunikationstechnologien (2004) 0.02 
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    Source
    Grundlagen der praktischen Information und Dokumentation. 5., völlig neu gefaßte Ausgabe. 2 Bde. Hrsg. von R. Kuhlen, Th. Seeger u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried. Bd.1: Handbuch zur Einführung in die Informationswissenschaft und -praxis
  6. SRW/U erleichtert verteilte Datenbankrecherchen (2005) 0.02 
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    Content
    "Seit zwei Jahrzehnten nutzen vor allem Bibliotheksverbünde das Protokoll Z39.50, um ihren Benutzern im Internet die simultane Abfrage mehrerer Datenbanken zu ermöglichen. Jetzt gibt es einen Nachfolger dieses Protokolls, der eine einfachere Implementierung verspricht. Damit ist auch eine größere Verbreitung für die Suche in verteilten Datenbeständen anderer Institutionen, wie z.B. Archiven und Museen, wahrscheinlich. SRW/U (Search and Retrieve Web Service bzw. Search and Retrieve URL Service, www.loc.90v/z3950/agency/zing/srw) wurde von einer an der Library of Congress angesiedelten Initiative entwickelt und beruht auf etablierten Standards wie URI und XML. Die mit SRW und SRU möglichen Abfragen und Ergebnisse unterscheiden sich nur in der Art der Übertragung, verwenden aber beide dieselben Prozeduren. Davon gibt es nur drei: explain, scan und searchRetrieve. Die beiden Erstgenannten dienen dazu, allgemeine Informationen über den Datenanbieter bzw. die verfügbaren Indexe zubekommen. Das Herzstück ist die search-Retrieve-Anweisung. Damit werden Anfragen direkt an die Datenbank gesendet und die Parameter des Suchergebnisses definiert. Verwendet wird dafür die Retrievalsprache CQL (Common Query Language), die simple Freitextsuchen, aber auch mit Boolschen Operatoren verknüpfte Recherchen ermöglicht. Bei SRU werden die Suchbefehle mittels einfacher HTTP GET -Anfragen übermittelt, die Ergebnisse in XML zurückgeliefert. Zur Strukturierung der Daten dienen z.B. Dublin Core, MARC oder EAD. Welches Format von der jeweiligen Datenbank bereitgestellt wird, kann durch die explain-Anweisung ermittelt gebracht werden."
    Object
    SRW/U
  7. UMTS: Mobilfunk der dritten Generation (2001) 0.02 
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    Content
    Enthält die Beiträge: RÖTGER, A.: Die Schritt-Macher; STERBAK, R.: Die Mega-Handys; LANG, M.: Neue Hardware braucht das UMTS-Land; ZÖBELEIN, K.: Dringend gesucht: die Killer-Applikation; OTTEN, D.: Peilstation in der Westentasche; EBERL, U.: UMTS++
  8. Pordesch, U.; Roßnagel, A.: "Offene" Kommunikation : zur Verletzlichkeit des Internet und zur Notwendigkeit neuer Sicherheits- und Schutzstrategien in den virtuellen Welten (1997) 0.02 
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    Abstract
    Während in den 80er und zu Beginn der 90er Jahre Überwachungsverfahren und die Verletzlichkeit der vernetzten Informationsgesellschaft Gegenstand alternativer Technikkritik waren, scheinen die damit verbundenen Gefahren mit der Verbreitung des Internet weitgehend verflogen zu sein. Zumindest findet ein diesbezüglicher Diskurs kaum statt, und auch Kritiker sind zu begeisterten Nutzern geworden. Interessanterweise ist jedoch gerade das Internet ein in mancher Hinsicht unsicheres und datenschutzunfreundlicheres Netz als früher kritisierte Netze und Dienste, wie etwa ISDN oder BTX. Das technische Netzkonzept und die Organisationsform seines Betriebs lassen zentral organisierte Grundschutzkonzepte wirkungslos werden, so daß hier viel vom Selbstschutz der Beteiligten abhängt. Diesen zu stärken, wäre ein wichtiges technologie- und gesellschaftspolitisches Ziel der kommenden Jahre
  9. Berezak-Lazarus, N.: ADSL - Auf der Überholspur durch die Multimedia-Welt (1999) 0.02 
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    Footnote
    Rez. in: Internet Professionell 2000, H.2, S.22
  10. Maier-Rabler, U.: Austrian information highway initiatives in the stage of disillusionment (1996) 0.02 
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    Abstract
    Discusses Austrian government policy on the information superhighway (ISH) since Aug. 94. The Austrian telecommunications infrastructure is far behind the standards of Europe. The Austrain PTT monopoly over the public telecommunications network is an obstacle to development. The rates for data services are still based on copper cable with transmission speeds of 9600 Kbps. Although there are various ISH initiatives in Austria, the gap between vision and reality is large. Describes the initiatives of the Austrian National Host and the Bureau for International Research and Technology Cooperation; the Austrian Platform for Telematic Applications; BNet (Burgenland); Telematik Initiative Wien; TELKIS Telekommunikationsinitiative Steiermark; Datahighway Upper Austria; Vorarlberger Telekommunikations GmbH; Telematik Initiative; Datenbahn Telecom GmbH (Salzburg); Ti-KOM (Tirol) and other initiatives
  11. Fernengel, U.; Flögel, E.; Roberts, S.D.: Datenübertragung mit Heim- und Personal Computern : MODEM und Hacker Handbuch (1992) 0.02 
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  12. Glas, J.; Grimm, U.: TCP/IP Software (1994) 0.02 
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  13. Cerf, V.G.: Netztechnik (1995) 0.01 
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    Abstract
    Da der Computer mittlerweile in fast alle Lebenesbereiche eindringt und immer neue Anwendungen für die Verarbeitung digitalisierter Informationen erschlossen werden, schwillt der Strom des Datenverkehrs zwischen Rechnern unterschiedlichster Art immens an. Ihn auch zukünftig zu bewältigen, bedarf es besserer Verbindungswege
    Pages
    S.22-31
  14. Spanik, C.; Rügheimer, H,: DFÜ & BTX (1994) 0.01 
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    Issue
    Erw. u. aktualisierte Neuaufl.
  15. Jasper, D.: Alles über Online (1996) 0.01 
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    Theme
    Grundlagen u. Einführungen: Allgemeine Literatur
  16. Welzel, P.: Datenfernübertragung : einführende Grundlagen zur Kommunikation offener Systeme (1993) 0.01 
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    Issue
    3., überarb. u. erw. Aufl.
  17. Peters, T.A.: ¬The online catalog : A critical examination of public use (1991) 0.01 
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    COMPASS
    Information retrieval / Use of / On-line computers
    Footnote
    Rez. in: College and research libraries 52(1991) S.590-591 (F. Wilson); Journal of academic librarianship 18(1992) no.1, S-40-42 (M.D. Behr)
    Subject
    Information retrieval / Use of / On-line computers
  18. Moen, W.: Information retrieval protocols : Z39.50 and Search & Retrieve via URL (2009) 0.01 
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    Abstract
    Information retrieval (IR) protocols support effective and interoperable intersystem search and retrieval. Although intersystem search methods have been envisioned and under development since the 1970s, it was the Z39.50 IR protocol, first released in 1988, that demonstrated real-world possibilities for such search and retrieval. As the networked information environment changed with the emergence of the World Wide Web, the need for standard IR protocols did not disappear, and one can argue the need is even more compelling given both the visible and invisible Web. A new protocol, based on the experience from Z39.50 but simpler and more comprehensible than Z39.50, is now being used for Web search and retrieval. Search and retrieve via URL (SRU) uses Web technologies and standards resulting in a Web friendly protocol that provides standard search access to existing Z39.50 resources and a wide-range of new non-catalog digital resources. This entry provides both an overview of the two protocols and technical details to understand both. A brief discussion of IR and communications protocols provides background to the specifics of these two IR protocols. Although communication protocols are by their nature technical specifications, this entry focuses on an overview of the functions and capabilities of the protocols. It uses technical concepts and terminology from the protocols to help explain how the protocols work but limits discussion of technical details.
  19. Lazinger, S.S.; Peritz, B.C.: Reader use of a nationwide research library network : local OPAC vs. remote files (1991) 0.01 
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    Abstract
    The primary objective of the present study was to exmine whether readers conducting bibliographic searches in ALEPH - Israel's research library network - tend to search only within the OPAC of the library within which they are working or whether they access the remote OPACs of other libraries. The ALEPH network has a dezentralized database. Therefore, it was possible to examine this question because each library has its own access code and each database can be searched separately. The data were collected by means of a one-page questionnaire lefr beside each terminal in the library of the Graduate School of Library and Archive Studies of the Hebrew University of Jerusalem during an entire academic years. results of analysis of the data collected in this survey are presented in 6 tables
    Date
    22. 2.1999 13:06:18
  20. Gottswinter, E.; Mönnich, M.W.: Brücken bauen zwischen EDV-Systemen : Einführung in die SR-Normen (1994) 0.01 
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    Abstract
    Explains the basic principles of the ISO Search and Retrieve (SR) standard which facilitates the searching and retrieval of data from computers via electronic networks regardless of the hardware and software used. Provides an introduction to SR and addresses the parameters of SR servies. Abstract Syntax Notation 1 and the preliminary implementation of an SR Update Service in the KARIN cataloguing system

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