Download e-book for kindle: Hydrosystems Engineering Uncertainty Analysis (McGraw-Hill by Yeou-Koung Tung

By Yeou-Koung Tung

ISBN-10: 0071451595

ISBN-13: 9780071451598

ISBN-10: 0071467084

ISBN-13: 9780071467087

Failure of hydrosystems, similar to dams, levees, typhoon sewers, or pollutants keep watch over structures, pose threats to the general public defense and wellbeing and fitness in addition to possibly inflict huge, immense damages on homes and environments. Many disasters of hydrosystems are often attributed by way of the life of assorted uncertainties, together with inherent typical randomness and the shortcoming of entire knowing of concerned geophysical procedures. it's for this reason necessary to systematically quantify the measure of uncertainty for the matter in hand in order that reliability review and risk-based layout of hydrosystems should be made. the normal strategy of frequency research of heavy rainfalls or huge floods reflect on purely component of the uncertainties all for hydrosystem engineering difficulties. during the last twenty years or so, there was a gentle progress at the improvement and alertness of uncertainty research concepts in hydrosystems engineering and different disciplines. the purpose of this e-book is to collect those uncertainty research recommendations in a single ebook and to illustrate their functions and obstacles for a large choice of hydrosystem engineering difficulties.

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Additional resources for Hydrosystems Engineering Uncertainty Analysis (McGraw-Hill Civil Engineering)

Example text

25b), as β0 = E[T { Ft (T )}0 ] = E (T ) = µt = β  e − t /β  ∞ ∞ 3 β1 = E[T { Ft (T )}1 ] = ∫ [t Ft (t )] ft (t ) dt = ∫ [t (1 − e − t/β )]   dt = β 0 0 β 4   From Eq. 29) This expectation is also known as the mean of a random variable. It can be easily seen that the mean of a random variable is the 1st-order L-moment, l1. Geometrically, the mean or expectation of a random variable is the location of the centroid of the PDF or PMF. The second and third integrations in Eq. 29) indicate that the mean of a random variable is the shaded area shown in Fig.

Most commonly, wi(n) = 1/n for all i = 1, 2,. , n. 1 lists the formula in practice for computing some commonly used statistical moments. Two types of product-moments are commonly used: moments about the origin, where xo = 0, and central moments, where xo = mx with mx = E[X ]. The rth-order central moment is denoted as mr = E[(X − mx)r], while the rth-order moment about the origin is denoted as mr′ = E[X r ]. 21) i =0 where Cr ,i = ( ri ) = i! − i )! is a binomial coefficient with ! representing factorial, that is, r!

Rosenblueth, E. (1975). “Point Estimates for Probability Moments,” Proceedings, National Academy of Science, 72(10):3812–3814. Rosenblueth, E. (1981). “Two-Point Estimates in Probabilities,” Applied Mathematical Modelling, 5:329–335. Yen, B. C. -Italy Bilateral Seminar on Urban Storm Drainage, Cagliari, Sardinia, Italy. Yen, B. , and A. H. S. Ang (1971). ” Proceedings of First International Symposium on Stochastic Hydraulics, University of Pittsburgh, C. L. ), 694–701, Pittsburgh, PA. Yen, B. , S.

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Hydrosystems Engineering Uncertainty Analysis (McGraw-Hill Civil Engineering) by Yeou-Koung Tung

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