A critical issue in the probabilistic framework for performance-based earthquake engineering is the choice of ground motion intensity measure(s). In an effort to identify optimum intensity measure(s), a comprehensive parametric statistical study based on 881 earthquake record components was conducted to identify the correlation between (1) seismological variables (SV’s) and traditional ground m...

Enterprises play an important role in cultivating engineering talents for having following advantages which universities lack: (1) accurately grasp the social demand for engineering talents; (2) have the most advanced manufacturing equipment and techniques; (3) have a group of experienced engineers and technicians; (4) offer real environment of engineering practice and innovation; (5) provide c...

Nonlinear Time History (NTH) analysis is currently the most reliable method for estimating structural behavior. Considerable computational demand and complexity of this method may cause difficulty for its routine practical application. Based on the Methodology of Endurance Time (ET) method, it can estimate the nonlinear response of structures with a much lower computational cost. In this resear...

Current network modeling practices usually assess the network performance at specified time interval, i.e. every 5 or 10 years time horizon. Furthermore, they are usually based on partially predictable data, which are being generated through various stochastic procedures. In this research, a new quantitative based methodology which combines combinatorial optimization modeling and transportation...

In this paper, the mean-centered first-order second-moment FOSM method is employed to perform probabilistic push-over analysis POA of structural and/or soil-structure systems. Approximations of first and second statistical moments FSSMs of engineering demand parameters EDPs of structural and/or geotechnical systems with random material parameters are computed based on finiteelement FE response ...

Colfax, WA, operates an aerated lagoon to achieve compliance with its National Pollutant Discharge Elimination System (NPDES) permit, which currently requires biochemical oxygen demand (BOD) and total suspended solids (TSS) removal. However, ammonia removal may soon be required, and Colfax is considering a nitrifying trickling filter (NTF) that would allow them to also maintain the lagoons. To ...