surge is one of the two destructive factors in compressors. surge is the stream instability phenomenon in compressor that imposes severe damages to the compressors. nowadays, suppressingsurge phenomenon is one of the most important issues in oil and gas industries, especially when flow reduction or gas reflux is considered. according to moore-greitzer compressor model, this paper designs an act...

In the aftermath of a natural catastrophe there is an increased demand for skilled reconstruction labor, which leads to significant increases of reconstruction labor wages and hence insured losses. Such inflation effects are referred to as "Demand Surge" effects. It is important for insurance companies to properly account for these effects when calculating insurance premiums and determining the...

BACKGROUND Concern has been raised about the capacity of trauma centers to absorb large numbers of additional patients from mass casualty events. Our objective was to examine the capacity of current centers to handle an increased load from a mass casualty disaster. METHODS This was a cross-sectional study of Level I and II trauma centers. They were contacted by mail and asked to respond to qu...

Big promotions of online retailers in different shopping festivals often lead to an overwhelming demand surge parcel delivery. Besides using its own distribution capacity, usually adopt capacity sharing cope with the surge. Because low cost unmanned distribution, can vehicle (UVD) capability sharing. We examine retailer’s UVD strategies a logistics firm under develop models unilateral and bidir...