A full-scale seven-story reinforced concrete shear wall building structure was tested on the UCSD-NEES shake table in the period October 2005 January 2006. The shake table tests were designed so as to damage the building progressively through several historical seismic motions reproduced on the shake table. A sensitivitybased finite element (FE) model updating method was used to identify damage...

Introduction: In recent years, spacecraft observations of 'medium-sized' asteroids 951 Gaspra, 243 Ida, 253 Mathilde, and most importantly 433 Eros have shown the overriding dominance of impact processes with regard to the structure and appearance of these irregular bodies. In a previous work [1], I investigated the relatively unexplored area of seismic shaking as a cause for the downslope moti...

• High seismic vulnerability of industrial facilities. Seismic performance-based design perspective for Shaking table tests a multi-storey frame structure with process equipment. Interaction between supporting and components. Overconservatism current standards w.r.t. floor spectra predictions. Past earthquakes demonstrated the high facilities equipped complex technologies leading to serious dam...

Muscular strength is an important component of physical fitness and can be improved by using free weights (i.e. barbells, dumbbells), weight machines, elastic bands, or body weight exercises (Stone et al., 2000). A new product in the exercise marketplace which is advertised to increase strength is the Shake Weight ®. The Shake Weight ® is a dumbbell shaped fitness device, sold by Fitness IQ (Vi...

The objective of this study is to develop a set of guidelines and analytical tools for use by practicing engineers to determine the collapse limit state of structures. A program of shake table testing of simple frames through collapse was carried out, and analytical strategies to capture this behavior have been developed and made available on the web via MCEER’s users network. The research perf...

This paper describes an experimental investigation conducted on WRS-BTU seismic isolators that are constituted by a wire rope spring coupled with a ball transfer unit. The device can be considered rigid along the vertical direction while the horizontal stiffness can be independently chosen to shift the natural period away from the period range having the most of earthquake energy. Two kinds of ...

We analyze the correlation eeects in two electron atoms and ions which can be probed in double ionization with high energy photons. We consider total cross sections and diierential cross sections for double ionization by pho-toabsorption and Compton scattering and discuss the shake and non{shake mechanisms which may contribute to these observables. The total cross section for photoabsorption (a...

Shake a bottle of champagne and pop it open. The champagne will shoot out in a mini-eruption. Do the same to a bottle of beer. Beer will ooze out more slowly. If a bottle of champagne or beer is opened without perturbation, there will be no eruption, but bubbles will rise and grow, often in regularly spaced “trains” (FIG. 1). In Guinness beer, bubbles rise more slowly and may even sink. The myr...