A novel design of a two-stage nonlinear vibration isolation system, with each stage having a high-static-low-dynamic stiffness (HSLDS), is studied experimentally in this paper. The positive stiffness in each stage is ...

The Department of Transports and Technology of Projects and Processes of the School of Civil Engineering of the University of Cantabria, (Spain) has over 18 years developed and certified rockfall protection and slope ...

The rotor dynamics study is critical in the design of rotating machinery. The dynamic modeling of rotors aims to estimate the operating condition of rotating machinery through the evaluation of parameters related to the ...

The rotor dynamics study is critical in the design of rotating machinery. The dynamic modeling of rotors aims to estimate the operating condition of rotating machinery through the evaluation of parameters related to the ...

In this paper, we propose a new heuristic symbolic tool for unveiling chaotic and stochastic dynamics: the permutation spectrum test. Several numerical examples allow us to confirm the usefulness of the introduced methodology. ...

We derive tests for persistent effects in a general linear dynamic panel data context. Two sources of persistent behavior are considered: time-invariant unobserved factors (captured by an individual random effect) and ...

The design of the techniques and algorithms used by the static, dynamic and interactive security testing tools differ. Therefore, each tool detects to a greater or lesser extent each type of vulnerability for which they ...

The Standard Penetration Test (SPT) is widely used for geotechnical subsurface investigation. It is intended to provide soil properties and foundation design parameters. Schnaid et al. (2009) proposed a rational method to ...