Search (62 results, page 1 of 4)

  • × theme_ss:"Datenfernübertragung"
  1. Otten, D.: Peilstation in der Westentasche (2001) 0.04 
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    Abstract
    Von der Lokalisierung eines Unfalls bis zur Restaurantempfehlung - Handy-Ortung soll es möglich machen
    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.84-86
  2. Eberl, U.: UMTS++ : Perspektiven (2001) 0.04 
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    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.87-88
  3. Lang, M.: Neue Hardware braucht das UMTS-Land : Infrastruktur (2001) 0.04 
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    Abstract
    Nur ein kleiner Teil der vorhandenen Mobilfunknetze lässt sich für UMTS nutzen. Insbesondere die Basisstationen erfordern eine völlig neue Hardware
    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.81-82
  4. Sterbak, R.: ¬Die Mega-Handys : Endgeräte (2001) 0.04 
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    Abstract
    Das Versprechen der grenzenlosen Datenfreiheit kann nur erfüllen, wer dazu geeignete Handys, Displays und Software auf den Markt bringt
    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.79-80
  5. Rötger, A.: ¬Die Schrittmacher : Standards (2001) 0.04 
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    Abstract
    In drei Stufen soll der Mobilfunk schneller werden, den vorläufig krönenden Abschluss bietet der Standard UMTS. In drei Schritten von GSM zu UMTS
    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.76-78
  6. Cerf, V.G.: Netztechnik (1995) 0.04 
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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
    Series
    Spektrum der Wissenschaft; Dossier 1
  7. Pelton, J.N.: Telekommunikationssysteme des nächsten Jahrhunderts (1998) 0.04 
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    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 1998, H.6, S.62-67
  8. Zöbelein, K.: Dringend gesucht : die Killer-Applikation (2001) 0.04 
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    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.82-84
  9. Gellert, H.: Kundenfreundliche Datenautobahn (1995) 0.03 
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    Spektrum der Wissenschaft; Dossier 1
  10. UMTS: Mobilfunk der dritten Generation (2001) 0.03 
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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++
    Date
    31.12.1996 19:29:41
    Source
    Spektrum der Wissenschaft. 2001, H.10, S.76-88
  11. Birman, K.P.; Renesse, R. van: Software für zuverlässige Netzwerke (1999) 0.02 
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    Series
    Spektrum der Wissenschaft; Dossier 99/2
  12. Beth, T.: Sichere offene Datennetze (1995) 0.02 
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    Source
    Spektrum der Wissenschaft. 1995, H.5, S.46-55
  13. Duhm, U.: Ring frei zur nächsten Runde (1999) 0.02 
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    Abstract
    Surfen wird 1999 preiswert wie nie. Erstmals profitieren auch die Internet-Surfer vom Wettbewerb der Telefongesellschaften. Doch längst nicht alle Angebote halten, was sie auf den ersten Blick versprechen
    Content
    Preisvergleich der Internet-Provider
    Date
    1. 8.1997 14:03:29
    19. 2.1999 20:21:22
  14. 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."
    Source
    Information - Wissenschaft und Praxis. 56(2005) H.5/6, S.274
  15. Kniszewski, P.: T-Online hat die Nase vorn (1997) 0.02 
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    Abstract
    Ein großer Sprung vorwärts: bei der Geschwindigkeit hängt der neue PPP-Internetzugang von T-Online (Version 2.0) die Konkurrenz ab. Com! hat T-Online, AOL und Compuserve getestet
    Date
    1. 8.1997 14:03:29
  16. Ball, R.; Peters, M.: Datennetze in einem Forschungszentrum : Das INTRANET der Zentralbibliothek des Forschungszentrums Jülich (1998) 0.02 
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    Abstract
    Überblick über die Datennetze im Forschungszentrum Jülich. Im Mittelpunkt steht dabei der Zusammenhang zwischen den speziellen Anforderungen und Anwendungen eines zentralen Informationsdienstleisters (Zentralbibliothek) und der daraus resultierenden Gestaltung und Strukturierung der Datennetze. Es wird gezeigt, daß die zukünftige Netzlast der Informationsgesellschaft im Zeitalter von Multimedia nur mit modernster Lichtwellenleitertechnik zu bewältigen ist
    Date
    29. 8.2000 12:00:46
  17. Vom Postwagen zum Communicator : Eine kleine Geschichte der Kommunikation (2002) 0.01 
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    Abstract
    Die technische Entwicklung hat dazu geführt, dass man die gegenwärtige Zeit auch gerne als Zeitalter der Kommunikation bezeichnet. Von den ersten Informations-Fernübertragungen per Rauchzeichen bis zur globalen Videotelefonie ist ein langer Weg, der die sog. Globalisierung erst ermöglichte. Im folgenden sollen einige stationen Revue passiert werden lassen. Jedoch ist Kommunikation nicht nur elektronischer Datentransfer, wie der anschließende Beitrag verdeutlicht
    Date
    29. 1.1997 18:49:05
  18. Petry, W.: Datenreisen billiger : wie man Telekommunikationskosten sparen kann (1994) 0.01 
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    Abstract
    Beschreibung der neuen Gebührenstrukturen im Datex-Bereich seit 1.8.94
    Source
    Cogito. 10(1994) H.4, S.17-22
  19. Pordesch, U.; Roßnagel, A.: "Offene" Kommunikation : zur Verletzlichkeit des Internet und zur Notwendigkeit neuer Sicherheits- und Schutzstrategien in den virtuellen Welten (1997) 0.01 
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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
    Date
    29. 1.1997 18:49:05
  20. Kropp, H.: DFÜ: sämtliche Einsatzmöglichkeiten der Fernsprech- und Datexdienste : aktuelles Nachschlagewerk mit Musterlösungen für die rationelle Nutzung der Postdienste und Erfahrungsberichte aus der Praxis (1988) 0.01 
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