CASE STUDY: MODEL FOR ECONOMIC LIFETIME OF PUBLIC CONSTRUCTION MACHINERY WITH ORDINARY LEAST SQUARES REGRESSION AND CROSS VALIDATION TECHNIQUES

Case study: model for economic lifetime of public construction machinery with ordinary least squares regression and cross validation techniques

The behavior of the value of productive assets can be analyzed from different perspectives.Currently, an analysis of the influence of the age of an asset on its asking price through access to a mass information volume, as well as the emergence of new technologies that allow complex computations to be carried out.The core of this work focuses on the

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Experimental investigation on the invert stability of operating railway tunnels with different drainage systems using 3D printing technology

In recent years, the invert anomalies of operating railway tunnels in water-rich areas occur frequently, which greatly affect the transportation capacity of the railway lines.Tunnel drainage system is a crucial factor to ensure the invert stability by regulating the external water pressure (EWP).By means of a three-dimensional (3D) printing model,

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