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  • extinction coefficient  (1)
  • hydroecology  (1)
  • paradigm  (1)
  • refractive index  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Agroforestry systems 24 (1993), S. 21-37 
    ISSN: 1572-9680
    Keywords: paradigm ; agroforestry ; science ; epistemology ; economics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Because people need improved agroforestry and because there are perceived limitations in a largely ‘scientific approach’ to agroforestry research and development in the past, an alternative paradigm to gaining knowledge for use in this area is suggested. It is an encompassing approach to gaining knowledge which we call the rationally robust paradigm, RRP. The paradigm has 11 components: 1. Concentrating on site-specific knowledge, often in a geographic information system; 2. being aware of the limited funds to achieve agroforestry objectives; 3. de-emphasizing induction and deduction, and their replacement by or addition of other epistemological bases; 4. accepting lower confidence levels for conclusions and subsequent action; 5. using estimates of median values; 6. using knowledge of the range limits of agroforestry phenomena and factors; 7. giving attention to the system's phenomenon of equifinality and its consequences; 8. de-emphasizing ‘time’ as a factor in system analysis, and replacing it with other system phenomena; 9. using statistical regression techniques but simultaneously seeking to identify and use independent factors (e.g., solar radiation) that function significantly in many models; 10. appropriately using regression techniques emphasizing the use of hypothesized, often-non-linear relationships; and 11. operating in a conceptual clinical milieu. The paradigm is proposed for use throughout agroforestry.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of infrared and millimeter waves 11 (1990), S. 1299-1302 
    ISSN: 1572-9559
    Keywords: Terahertz ; far-infrared ; submillimeter ; spectroscopy ; refractive index ; extinction coefficient ; dielectric constant ; absorption ; Rexolite™
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The far-infrared optical properties of Rexolite™ 1422 were characterized at the University of Lowell Research Foundation using Fourier transform spectroscopy. The spectroscopic transmission measurements were performed on a 0.0236″ thick sample of material over the submillimeter wavelength region from 10 cm−1 to 360 cm−1. Using multiple reflection theory for transmission through an etalon, the frequency dependent complex refractive index of Rexolite™ is reported.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Wetlands ecology and management 4 (1996), S. 15-30 
    ISSN: 1572-9834
    Keywords: production systems ; agroecology ; hydroecology ; hydroperiod ; wetland policy ; sustainable agriculture ; Nigeria ; Sahel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The composition and complex interrelationships among the components of a Sahelian wetland community in Nigeria are described. The hydrology of the wetland is perceived to be the major determinant of the ecological integrity of the area. Ongoing ecological changes started by periodic meteorological droughts and sustained by the effects of large-scale hydro-agricultural projects are described along with their impacts on wildlife habitats and other valuable wetland resources. Establishing national wetland policies that recognize present and potential future values of various wetland types is recommended as an important step toward sustainable conservation of wetland resources in countries of the Sahel.
    Type of Medium: Electronic Resource
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