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  • 1
    Electronic Resource
    Electronic Resource
    Minimization of load reduction in pipe networks subject to interrupted supply (1975)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 9 (1975), S. 477-483 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The paper considers the question of reduction of loads on a pipe network, which may be necessary as a result of failure in supply or interruption of a pipe. The non-linear relationship between pressure loss and flow along a pipe makes the problem of minimizing the reduction of loads also non-linear. An iterative linear approximation technique is therefore adopted. When the question is formulated as a problem in linear programming, the constraints include nodal pressures as well as loads. It is shown how the number of these constraints may be reduced.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620090214
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Security assessment of gas networks (1977)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 11 (1977), S. 963-973 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A measure of the severity of a pipeline failure is the minimum reduction in load in the network necessary to ensure that no node falls below its minimum pressure. The expected loss of sales is calculated as the product of the minimum reduction in load and the expected duration of the period during which the pipeline will be in the inoperable state, and thus reflects both the severity and the frequency of the failure. Consequently, this index, whose evaluation involves network theory, optimization and probability theory, serves as a measure of the insecurity of the gas network.The security index can be evaluated for all points within a system, providing a basis of comparison between the relative vulnerability of different parts. The relative level of security of different design proposals can also be assessed using this index.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620110605
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Ariel: An information system for AIDS research (1993)
    Springer
    Medical & biological engineering & computing 31 (1993), S. S12 
    Details
    ISSN: 1741-0444
    Keywords: AIDS research ; Databases ; Information systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract An information system has been established at the National Institute for Biological Standards & Control for the exchange of knowledge in AIDS research, particularly in relation to vaccine design. This system, the AIDS information exchange link (Ariel), is designed to act as a central store of relevant information for scientists in the UK and abroad and was set up under the auspices of the Medical Research Council. It holds information on research materials (reagents), on genetic sequences and on projects. Several computers and database systems are involved. Access is obtained through Janet, the UK academic network, or PSS, the British Telecom public network. Both these networks are linked to international network systems, e.g. Internet, Earn, IPSS. Ariel has been in operation for 18 months and is accessed internationally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446644
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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