Search results for "Residual life"

showing 2 items of 2 documents

Testing mechanical characteristics of chestnut stakes used in bed sills for stream restoration

2017

Using of wood elements for constructing bed sills in Mediterranean streams, where the banks are not protected by tree vegetation, needs an evaluation of biological and mechanical characteristics for evaluating both the wood durability and the effectiveness of the stream restoration project. Very few studies have dealt both with the decay of mechanical characteristics of wood elements employed for stream restoration works and with the changes over time of physical and chemical wood characters. In this paper, for a wood and stone bed sill located in a stream having no shaded banks, the changes of physical and chemical characters detected after 12, 18, 24, 30, 36, 42 and 48 months on chestnut …

Engineering0211 other engineering and technologiesBioengineering02 engineering and technologySTREAMSmechanical propertiesIndustrial and Manufacturing EngineeringBed silllcsh:AgricultureDegradationSillFlexural strength021105 building & constructionmedicineBed sill; Degradation; Destructive testing; Mechanical properties; Residual life; Wood; Bioengineering; Mechanical Engineering; Industrial and Manufacturing EngineeringSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliGeotechnical engineeringlcsh:Agriculture (General)021101 geological & geomatics engineeringgeographygeography.geographical_feature_categorybusiness.industryResidual lifeMechanical Engineeringlcsh:SStiffnessresidual life.Compression (physics)Durabilitylcsh:S1-972WoodDestructive testingCompressive strengthmedicine.symptombusinessStream restorationSettore ICAR/08 - Scienza Delle CostruzioniMechanical propertie
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Generalized Entropies, Variance and Applications

2020

The generalized cumulative residual entropy is a recently defined dispersion measure. In this paper, we obtain some further results for such a measure, in relation to the generalized cumulative residual entropy and the variance of random lifetimes. We show that it has an intimate connection with the non-homogeneous Poisson process. We also get new expressions, bounds and stochastic comparisons involving such measures. Moreover, the dynamic version of the mentioned notions is studied through the residual lifetimes and suitable aging notions. In this framework we achieve some findings of interest in reliability theory, such as a characterization for the exponential distribution, various resul…

Reliability theory62B10Exponential distributionGeneral Physics and AstronomyPoisson processlcsh:Astrophysicsstochastic orders02 engineering and technologyResidualvariance01 natural sciencesArticle62N05010104 statistics & probabilitysymbols.namesakelcsh:QB460-4660202 electrical engineering electronic engineering information engineeringApplied mathematics60E050101 mathematicsgeneralized cumulative entropylcsh:ScienceResidual entropyGeneralized cumulative entropy; Generalized cumulative residual entropy; Variance; Mean residual life; Stochastic ordersMathematics94A17generalized cumulative residual entropymean residual lifelcsh:QC1-999stochastic orders.symbols020201 artificial intelligence & image processinglcsh:Qlcsh:PhysicsEntropy
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