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  • × theme_ss:"Datenfernübertragung"
  1. Snelson, P.: Relationships between access and use in information systems : remote access to and browsing of online catalogues (1993) 0.03 
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    Abstract
    Examined two groups of online catalogue users segregated by their method of access to the system: terminals in the library or remote workstations. An online survey collected demographic data, perceptions on source and terminal accessibility, and information on usage, task variety and search satisfaction. Transaction logs furnished data on browsing behavious, while interviews of both groups provided additional information about remote use. Results indicate that remote use is comparable to traditional use
    Source
    Integrating technologies - converging professions: proceedings of the 56th Annual Meeting of the American Society for Information Science, Columbus, OH, 24-28 October 1993. Ed.: S. Bonzi
  2. Breaks, M.: SuperJANET : Library and information services over a gigabit network (1994) 0.03 
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    Abstract
    Describes the development of SuperJANET, the new optical fibre network for the UK academic and research community. Considers pilot applications for SuperJANET covering library and non library applications and strategic issues to be met for SuperJANET to become an information superhighway. Gigabyte networks will be 1.000 time faster than JANET and will enable sophisticated image and voice communication. SuperJANET uses synchronous digital hierarchy technology. SuperJANET is being developed and and introduced in a number of phases. Discusses supercomputing, library and information services, and strategic issues. Examines the role of technology and librarians in the development of the virtual library
  3. Matthews, J.R.; Parker, M.R.: Local Area Networks and Wide Area Networks for libraries (1995) 0.02 
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    Date
    30.11.1995 20:53:22
    Source
    Library technology reports. 31(1995) Jan-Feb., S.1-11x
  4. Boss, R.W.: Client/server technology for libraries with a survey of vendor offerings (1994) 0.02 
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    Abstract
    Defines client/server computer architecture and discusses it in the context of library automation. Addresses the following issues: is client/server needed?; the role of the Z39.50 standard; utilizing existing hardware and software; writing specifications; staff requirements; training; and ongoing support. Presents the responses of 30 library automation vendors in the USA to a questionnaire survey regarding present and future applications of client/server technology. Includes a bibliography of materials used in the preparation of the report
    Source
    Library technology reports. 30(1994) no.6, S.681-744
  5. Corey, J.F.: ¬A grant for Z39.50 (1994) 0.02 
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    Abstract
    In Sept. 1990, the US Dept. of Education's Library Technology and Cooperation Grants Program awarded a three-year grant to the Florida Center for Library Automation (FCLA), an agency of the Florida State University System, to develop software adhering to the ANSI Z39.50 Information Retrieval protocol standard. The Z39.50 software was to operate over the OSI communications protocols and be integrated with FCLA's NOTIS system, which is shared by all 9 state universities in Florida. In order to test the correctness of its Z39.50 software, FCLA sought out other library software developers who would be willing to develop Z39.50 systems of their own. As part of this process, FCLA helped to found the Z39.50 Implementor's Group (ZIG), which has since gone on to improve the standard and promote Z39.50 implementations throughout much of the North American library systems marketplace. Early on in the project, it became apparent that TCP/IP would be a more heavily used communication vehicle for Z39.50 messages than OSI. FCLA expanded its design to include TCP/IP and, by the end of the grant in Sept. 1993, will have a working Z39.50 system that can communicate over both OSI and TCP/IP networks
    Source
    Library hi tech. 12(1994) no.1, S.37-47
  6. Boßmeyer, C.: OSI-Anwendungen in Bibliotheken oder Was ein Bibliothekar von OSI wissen sollte (1995) 0.02 
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    Abstract
    Open System Interconnection (OSI) Standard 7498 appeared in 1984. Open systems of PCs and workstations decentralize information processing and divide it between several computers, based on the client-server concept. Relevant terminology is explained, including application protocol, bases of the SR/Z39.50 model, data transmission, search request services, query types, attribute sets, transmission format, transfer syntax, solution models and cooperation between library systems
  7. Scheuerer, J.: Onlinebanking (1997) 0.02 
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    Date
    1. 8.1997 14:03:29
    Source
    Com!. 1997, H.8, S.22-24
  8. Lazinger, S.S.; Peritz, B.C.: Reader use of a nationwide research library network : local OPAC vs. remote files (1991) 0.02 
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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
  9. Reiss, L.K.; Merakos, L.F.: Performance analysis of an adaptive bandwidth reservation scheme for ATM virtual path traffic (1996) 0.02 
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    Date
    2. 8.1996 19:36:29
    Source
    Computer networks and ISDN systems. 28(1996) no.3, S.391-400
  10. Duhm, U.: Ring frei zur nächsten Runde (1999) 0.02 
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    Date
    1. 8.1997 14:03:29
    19. 2.1999 20:21:22
  11. Kalin, S.W.: ¬The searching behavior of remote users : a study of one online public access catalog (OPAC) (1991) 0.01 
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    Abstract
    This study aimed to determine if the searching behaviour of remote users of LIAS, Penn State's online catalogue differed from those using the OPAC within the library. More than 1.000 searches done by remote users (those accessing the system via either dial-access or the university's computer network) were compared to more than 1.000 searches done by in-house users. Each search was duplicated step by step and analysed according to a pre-determined set of criteria. Although few dramatic differences were found between the 2 groups, there were enough subtle differences to generate interest. In general, remote users are the more sophisticated searchers, bearing out the assumption that remote users seem to have a better conceptual knowledge of how an information system should operate. On the other hand, they struggle more with the procedural details of how to use the OPAC. Dial-access users seem to constitute a unique group of users: their searches are often quite different than those done by either network or in-house users
    Source
    ASIS '91: Systems understanding people. Proc. of the 54th Ann. Meeting of the ASIS, vol.28, Washington, D.C., 27.-31.10.1991. Ed.: J.-M. Griffiths
  12. Holm, L.A.: Connectivity and protocols, the technical side : OSI and TCP/IP, FTP, TELNET, SR, ILL, update (1994) 0.01 
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    Abstract
    Describes a layer model for networks. For each layer, one or more services are defined, and for each service a protocol is specified. 2 OSI application level protocols have been defined for library services: SR and ILL. The underlying layers are supposed to be OSI services, but some implementations are using TCP/IP, and some are using a mixture of OSI and TCP/IP. The systems based directly on TCP/IP can not communicate with those based purely on OSI. Discusses the pros and cons for choosing OSI or TCP/IP. Gateways between the OSI and TCP/IP networks are needed. The ISO protocol SR and the ANSI protocol Z39.50 are both 'search and retrieve' protocols. The SR is almost a subst of Z39.50, but they may become identical in the future. There is only one protocol for interlibrary loan, the ISO ILL protocol. It covers 3 models of interlibrary loan and all services connected with ILL. Other services such as Explain, Scan and Update are presently being discussed in ISO TC 46. Discusses the needs of the library community for network services such as file transfer, remote login, directories and electronic mail
  13. Hinich, M.J.; Molyneux, R.E.: Predicting information flows in network traffic (2003) 0.01 
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    Abstract
    Hinich and Molyneux review the literature of internet measurement and note three results consistently to be found in network traffic studies. These are "self-similarity," "long-range dependence," by which is meant that events in one time are correlated with events in a previous time and remain so through longer time periods than expected, and "heavy tails" by which they mean many small connections with low byte counts and a few long connections with large byte counts. The literature also suggests that conventional time series analysis is not helpful for network analysis. Using a single day's traffic at the Berkeley National Labs web server, cumulated TCP flows were collected, log transforms were used with the adding of .01 to all values allowing log transforms of the zero values, and providing a distribution that overcomes the heavy tail problem. However, Hinich's bicorrelation test for nonlinearity using overlapping moving windows found strong evidence of nonlinear structures. Time series analysis assumes linear systems theory and thus additivity and scalability. Spectral analysis should provide large peaks at the lowest frequencies if long range dependence is present since the power spectrum would go to infinity if the frequency goes to zero. This does not occur and so long range dependence must be questioned, at least until it is determined what effect other OSI layers may have on the TCP data.
    Source
    Journal of the American Society for Information Science and technology. 54(2003) no.2, S.161-168
  14. Kock, M.d.: Remote users of an online public access catalogue (OPAC) (1993) 0.01 
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    Abstract
    Networks allow different users from outside the library to have remote access to library catalogues. These remote users may face problems that differ from the OPAC users' in the library. They may not be comfortable with the computer technology and may not be familiar with the OPAC of the library. Libraries should offer different support services from those provided to on-site users. These users need technical advice as well as special instruction aids and guides to lead them to the information they want to retrieve
    Source
    Electronic library. 11(1993) nos.4/5, S.241-244
  15. Waters, D.: Remote searching of OPACs and the electronic conference (1992) 0.01 
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    Abstract
    Reviews the pros and cons of providing library clients with access to remote OPACs and comments on the use of electronic communications as an alternative to the traditional conference
    Source
    Australian library journal. 41(1992) no.1, S.70-75
  16. ISO reference model for open distributed processing (1995) 0.01 
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    Source
    Computer networks and ISDN systems. 27(1995) no.8, S.1211-1329
  17. Meer, J. de: ¬The ISO reference model for open distributed processing (1995) 0.01 
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    Source
    Computer networks and ISDN systems. 27(1995) no.8, S.1211-1214
  18. Farooqui, K.; Logrippo, L.; Meer, J.de: ¬The ISO reference model for open distributed processing : an introduction (1995) 0.01 
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    Abstract
    The IOS rererence model of open distributed processing (RM-ODP) consists of: an overview of the reference model, the descriptive model, the prescriptive model, and the architectural semantics. They provide the concepts and rules of distributed processing to ensure openness between interacting distributed application components. Openness is a combination of characteristics: accessibility, heterogeneity, autonomy and distribution. The RM-ODP introduces the concept of viewpoint to describe a system from a particular set of concerns, and hence to deal with the complexity of distributed systems. While all the viewpoints are relevant to the description and design of distributed systems, the computational and engineering models are the ones that bear most directly on the design and implementation of distributed systems. From a distributes software engineering point of view, the computational and engineering viewpoints are again the most important; they reflect the software structure of the distributed application most closely. Concentrates on the computational and engineering viewpoints
    Source
    Computer networks and ISDN systems. 27(1995) no.8, S.1215-1229
  19. Ferl, T.E.; Millsap, L.: Remote use of the University of California MELVYL Library System : an online survey (1992) 0.01 
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    Abstract
    This report presents the results of a survey of users who access the University of California's online union catalog, the MELVYL library system, via microcomputers with modems or connections carried through local or wide area networks. The report includes descriptive statistics on user location, status, subject interest, affiliation, in-library versus out-of-library usage patterns, need for assistance, and desire for new features
  20. Denenberg, R.: Data communications and OSI (1990) 0.01 
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    Source
    Library hi tech. 8(1990) no.4, S.15-32

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