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  • Body length  (1)
  • Design process  (1)
  • 1995-1999  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Understanding conceptual electronic design using protocol analysis (1998)
    Springer
    Research in engineering design 10 (1998), S. 129-140 
    Details
    ISSN: 1435-6066
    Keywords: Design process ; Design protocols ; Design research ; Function-behaviour-structure model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Many theories about the process, of design have been derived from prescriptive or descriptive analysis. There have been few attempts to empirically test these theories. Protocol analysis facilitates detailed inspection of the design process allowing design task analysis across the temporal dimension. Some hypotheses about the design process, derived from the literature, are objectively tested using results obtained from protocol analyses of various electronics designers engaged in conceptual design. Support for the hypotheses is found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01607155
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of temperature on maturation threshold body-length in Daphnia magna (1996)
    Springer
    Oecologia 108 (1996), S. 627-630 
    Details
    ISSN: 1432-1939
    Keywords: Daphnia magna ; Temperature ; Food supply ; Maturation ; Threshold ; Body length
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Aquatic invertebrates are usually larger at maturity when water temperatures are lower. For the freshwater cladoceran Daphnia, it has been suggested that a threshold size must be attained to initiate maturation, which results two instars later in the deposition of eggs into the brood chamber. This threshold size is believed to temperature on maturation threshold body-length in Daphnia magna. Daphnids were raised from birth to maturity under three constant-temperature regimes (12°C, 16°C, 22°C), and two food-level conditions. Animals were measured daily, and a body-length based maturation threshold determined for each individual. We demonstrate that mean maturation threshold length is negatively correlated with ambient water temperature. Further, daphnids with a larger threshold length tended to be larger at maturity. A maturation threshold linked to body length suggests that reduced variation in size at maturity is adaptive, even at the cost of additional variation in instar number or age at maturity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00329035
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