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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Population and environment 10 (1989), S. 237-244 
    ISSN: 1573-7810
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Sociology
    Notes: Abstract Desertification remains high on the international agenda of critical environmental problems as the decade of the '80's draws to a close. The fact that this subject has attracted renewed high level attention over the past year is a source of considerable encouragement. The "bad news" is that such recognition reflects the failure of the international community to address the desertification problem in a meaningful way over two decades—this despite the considerable enthusiasm, detailed planning and extensive commitments of governments, international bodies and the private sector. While lack of adequate funding is often implicated, reasons for the woeful performance are found elsewhere: an initial underestimation of the depth and tenacity of the problem; the continuing absence of agreement on the dimensions and key indicators of desertification, prerequisites for measuring trends and progress; the erosion of public confidence and government support through failure to publicize and build on the few successes; and widespread civil unrest in many of the affected countries which has thwarted meaningful antidesertification efforts. Prospects for the 1990's depend upon new commitments and follow-through both by governments of affected nations and by the development assistance community. The former must provide a more favorable political and social context for success. This means tackling more aggressively problems of population growth, land tenure, and civil disruption. The donor community, for its part, must overcome the scattering of its intellectual, technological and financial resources, and rebuild its own and others' confidence by demonstrating that the resource base can indeed be stabilized and enhanced at a meaningful scale. Recognition of and commitment to the long-term requirements of antidesertification campaigns are also required of all parties.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of engineering mathematics 21 (1987), S. 167-178 
    ISSN: 1573-2703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Technology
    Notes: Abstract The Orr-Sommerfeld equation is studied using the method of multiple scales. The leading-order uniformly-valid asymptotic solutions are obtained without recourse to heuristic methods for two different types of velocity profiles. Solutions were obtained for arbitrary velocity profiles without inflection or critical points and for profiles with simultaneous inflection and critical points. These are shown to reproduce previously obtained solutions in the inner and outer regions.
    Type of Medium: Electronic Resource
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