GPS solutions offer direct dynamic monitoring of long-span and tall civil structures. Timely and correct interpretation of the solutions is essential to improved monitoring and reduced number of false alarms. In this article, a new approach has been developed which employs the principal component analysis (PCA) of wavelet transformed GPS solutions to detect out-of-control signals. The methodolo...

the major problem of wind turbines is the great variability of wind power production. the dynamic change of the wind speed returns the quantity of the power injected to networks. therefore, wind–thermal generation scheduling problem plays a key role to implement clean power producers in a competitive environment. in deregulated power systems, the scheduling problem has various objectives than i...

Fixed base structures subjected to earthquake forces are prone various issues, such as the attraction of greater structure, amplified accelerations non-structural components, expensive design for better seismic performance, and so forth. Base isolation applied at foundation vulnerable is a radical bypass from conventional approaches utilized by structural engineers. However, practical implement...

1. introduction zakeri gary (1750) found that earthquake is jolts of some places or significant portions of land to natural causes with big voices like thunder that is often accompanied by an eruption of water, fire, smog or wind. after the earthquake, building efficiency greatly reduces because of the network’s collapse and closing of paths. however, after a catastrophic disaster, communicatio...

Abstract This paper presents the behavior of a 102-year-old truss bridge under wind loading. To examine wind-related responses historical bridge, state-of-the-art and traditional modeling methodologies are employed: machine learning approach called random forest three-dimensional finite element analysis. Upon training validating these methods using experimental data collected from field, member...

Wind turbine structures can be susceptible to damage from earthquake loading due large overturning moments at the foundation level. As wind energy market expands seismically active parts of world, it becomes important evaluate seismic behaviour these structures. Especially, earthquake-induced liquefaction when farms are located on sites with marginal soil conditions such as loose, saturated san...

Understanding how regional climate, and the extremes associated with it, will change over the coming decades is a vital step towards effective local adaptation. The understanding of the vulnerability and risk from severe winds is derived from a number of factors, including the frequency and intensity of the hazard, community exposure and the relationship between gust wind speed and impact/loss ...

introduction natural hazards as recurring phenomenon have always existed in human life and will in the future, too. nowadays natural hazards occur throughout the world, but their impacts have been increasing and are generally much greater in developing countries than in developed ones. earthquake is a kind of natural hazard that has the most damages for humankind. earthquakes pose inevitable ri...