This paper presents the application of least squares support vector machines (LS-SVMs) for automatic detection of alterations in the human electroencephalogram (EEG) activities during hypopnoea episodes. The obstructive sleep apnoea hypopnoea syndrome (OSAH) means ‘‘cessation of breath” during the sleep hours and the sufferers often experience related changes in the electrical activity of the b...

The proposal of the NATM has changed people’s understanding support principle. Therefore, how to improve self-supporting capacity surrounding rock become an important issue in research. Bolts and lining are widely used together various projects because their bearing reinforcement effects line with concept NATM. This paper puts forward a model analyze mechanical behavior deeply buried circular t...

This research work presents a case study of rock mass characterization on diversion tunnels at Diamer Basha Dam, Pakistan. Geological and geotechnical studies were performed to characterize the rock mass along the axis of diversion tunnel. The core specimens retrieved were tested in laboratory and physical and mechanical properties of the rock mass were determined. Detailed discontinuity survey...

When the tunnel passes through slope area, once stability changes or landslide disasters occur, large additional stress, deformation, cracking are easily caused in tunnel, which results high risk to operation. The deformation and failure mode of induced by different types tunnel-related landslides different. However, there is no systematic classification structure systems. By investigating typi...

The stability of tunnel is greatly affected by the changes in volume and strength swelling loess caused humidification. Quantitative reflection influence humidification on mechanical model has important engineering significance for design support structures. Based fact that parameters related to are functions water content, content was introduced into classical surrounding rock–support model, a...

In support of the Columbia Accident Investigation, inviscid computations of the aerodynamic characteristics for various Shuttle Orbiter damage scenarios were performed using the Felisa unstructured CFD solver. Computed delta aerodynamics were compared with the reconstructed delta aerodynamics in order to postulate a progression of damage through the flight trajectory. By performing computations...

Ground movements during tunnel excavation are varied in magnitude and trend depending on several factors including the tunnel geometry, ground conditions, excavation methods, and support measures, etc. There exist several empirical and semi-empirical formulas available for predicting ground movements. These conventional methods, however, do not simultaneously take into consideration all the fac...