This study is devoted to seismic collapse safety analysis of performance based optimally seismic designed steel chevron braced frame structures. An efficient meta-heuristic algorithm namely, center of mass optimization is utilized to achieve the seismic optimization process. The seismic collapse performance of the optimally designed steel chevron braced frames is assessed by performing incremen...

Automated monitoring of power systems has become an imperative due to two major developments that characterize the 21 st century electricity grid: a) large scale deployment of intelligent electronic devices (IEDs) has created huge amount of data recorder either continuously or at the time when IED recording is triggered by an event such as disturbance or fault, and b) the power system loading h...

This white paper focuses on the feasibility of the Institute of Medicine’s (IOM) recommendation to support a national cardiac arrest registry. A functional national cardiac arrest registry provides necessary research data to EMS and hospitals for improving cardiac arrest survival rates. This white paper contends the IOM recommendation falls short in considering the issues needed to ensure the s...

This survey was conducted in Al-Kalakla Fishery (KF) and Jabel Awlia Dam Fishery (JADF) in the White Nile River, Khartoum state to identify the selective and non-selective fishing gear. The results showed the selective fishing gear represented by gill-nets and seine nets (beach nets) in both fisheries with clear variation in use. In KF, fixed nets were dominant (56%) in fishing and followed by ...

Construction and operation of the Three Gorges Dam (TGD) has significantly altered the downstream hydrological regime along the Yangtze River, which has in turn affected the environment, biodiversity and morphological configuration, and human development. The ecological and environmental systems of the middle and lower Yangtze River have been affected adversely, with the ecosystems of Poyang La...

plan irregularity causes local damages being concentrated in the irregular buildings. progressive collapse is also the collapse of a large portion or whole building due to the local damages in the structure. the effect of irregularity on the progressive collapse potential of the buildings is investigated in this study. this is carried out by progressive collapse evaluation of the asymmetric mid...

Operators can be poor monitors of automation if they are engaged concurrently in other tasks. However, in previous studies of this phenomenon the automated task was always presented in the periphery, away from the primary manual tasks that were centrally displayed. In this study we examined whether centrally locating an automated task would boost monitoring performance during a flight-simulati...

Recently the design flows of many dams have been re-evaluated, resulting in spills often larger than the original ones. In many cases, occurrence of revised flows would result in dam overtopping because of insufficient storage and spillway capacity of reservoirs. Embankment dams whilst common are more likely to fail than other dam types when overtopped in an uncontrolled manner because of breac...

For over five years, Piute Dam in the Sevier River Basin of Utah has been equipped with an automatic gate to regulate releases into the downstream irrigation delivery system. This system has allowed the water commissioner to remotely set the desired flow target. The gate then automatically adjusts itself to provide the specified outflow. Although this has been very convenient, the determination...

This study aims at quantifying the influence on the traversability of road network of road network caused by building collapse in earthquake. To this end, an analysis method on post-earthquake traversability of road network considering building collapse is proposed. First, the time-history analysis of seismic response based on the multi-degree of freedom (MDOF) model is performed for regional b...