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Neural nets for modelling rainfall-runoff transformations (1995)

Lorrai, M. ; Sechi, G. M.

Springer

Water resources management 9 (1995), S. 299-313

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ISSN: 1573-1650

Keywords: hydrology ; rainfall-runoff models ; neural networks

Source: Springer Online Journal Archives 1860-2000

Topics: Architecture, Civil Engineering, Surveying , Geography

Notes: Abstract To obtain river flow data, a neural network (NN) is developed and applied to rainfall-runoff transformation. The NN has been built considering a hidden two layer net and the sigmoidal has been used as a response function. Training is conducted using a back-propagation learning rule. In the input layer, both areal and point data values may be considered. The capability to provide a suitable forecast of river runoff has been examined for the Araxisi watershed in Sardinia. Experiments have been made dividing the total extension of observed data into three ten-year periods, assuming each as a training set, learning the NN and simulating the other two decades over the same period. The obtained model efficiency confirms the capability of this approach to supplying a useful tool in the evaluation of rainfall-runoff transformations.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00872489

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Brain atrophy, peripheral neuropathy and folic acid deficiency (1983)

Monaco, F. ; Sechi, G. P. ; Piras, M. R. ; [et al.]

Springer

Neurological sciences 4 (1983), S. 113-115

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ISSN: 1590-3478

Keywords: peripheral neuropathy ; cerebral atrophy ; folic acid deficiency

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Description / Table of Contents: Sommario Vierte descritto il caso di unapaziente con neuropatia periferica ed atrofia cerebrale, entrambe dovute ad una carenza selettiva di acido folico secondaria a gravi disturbi intestinali. La terapia sostitutiva con folati migliorò il quadro clinico, ematico e neurofisiologico.

Notes: Abstract A woman with peripheral neuropathy and cerebral atrophy, both secondary to a selective folic acid deficiency caused by severe gastrointestinal disturbances, was given folic acid replacement therapy, which improved her clinical, blood and neurophysiological status.