The impact of topographic attributes on the uneven distribution of seismic response and associated devastation has frequently been observed and documented during seismic events, but has rarely been investigated at a regional scale. Existing numerical and experimental techniques applied to explore the impact of topographic attributes in the aggravation of seismic response, have been limited to i...

Within the past decade, seismic isolation systems have gained rapid popularity in the earthquake resistant design of bridge structures. This popularity has come in response to the inadequacy of earlier seismic design and retrofit methodologies. The mechanical shortcomings and subsequent failure mechanisms associated with the early elastic seismic design philosophy are first presented, followed ...

The field of seismic exploration of the Earth has changed dramatically over the last half a century. The Society of Exploration Geophysicists (SEG) has worked to create standards to store the vast amounts of seismic data in a way that will be portable across computer architectures. However, it has been impossible to predict the needs of the immense range of seismic data acquisition systems. As ...

The influence of seismic loading on segment opening of a shield tunnel was explored using the dynamic finite element method to analyze the distribution of segment opening under multidirectional seismic loading, combined with a typical engineering installation. The calculation of segment opening was deduced from equivalent continuous theory and segment opening was obtained through calculations. ...

9 Two critical items in the energetic budget of a seismic province are the strain rate, which 10 is measured geodetically on the Earth’s surface, and the yearly number of earthquakes 11 exceeding a given magnitude. Our study is based on one of the most complete and recent 12 seismic catalogues of Italian earthquakes and on the strain rate map implied by a multi13 year velocity solution for perm...

We examined tree rings from Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) timbers in the Salt Lake Tabernacle, constructed from 1863–1867 in Salt Lake City, Utah. A seismic upgrade to the Tabernacle initiated in 2005 required the replacement of wooden timbers with steel beams. Our objectives were to 1) determine cutting dates for the timbers to identify logs that may have bee...

A major upgrade of the Global Strain Rate Map, version 2.1, uses far more geodetic data, systematic data processing, more modeled plates and plate boundaries, an improved algorithm, and a finer spatial grid than version 1 (Kreemer et al., 2014). We convert this model to an indefinite-term tectonic forecast of shallow seismicity on a fine global grid, using the assumptions of Bird et al. (2010) ...

The GTF is upgrading its control and data acquisition systems. New computer-based instrumentation and software will soon replace the existing control system used to operate the GTF photoinjector, linac, and associated beamline components. We have also acquired new data and image acquisition instrumentation, including waveform digitizers, framegrabbers, IR and UV cameras, as well as the ancillar...

Part of any self-healing system must be a mechanism that allows the software in the system to be upgraded. It is simply not realistic to assume that there would be no bugs in software nor any need to add new functionality. This paper studies some work that has been done in solving the problems related to the dynamic upgrade (or update) of the software. We assume that the system has to serve the...

A method was developed to increase the throughput of the Hewlett Packard, 98635A floating point processor equipped, model 236C computer. The increase was carried out in three phases each with a clock and or chip change during the modification. Two programs were written to test the results and evaluate the increases in performance made to the computer. The first one shows reduction in processing...