The impacts of coastal erosion are expected to increase through the present century, and beyond, as accelerating global mean sea-level rise begins to enhance or dominate local shoreline dynamics. In many cases, beach (and shoreline) response to sea-level rise will not be limited to passive inundation, but may be amplified or moderated by sediment redistribution between the beach and the broader...

By John B. Taylor Stanford University January 2008 Ten years ago macroeconomists began noticing and studying a remarkable change in the performance of the U.S. economy. The economy had become much more stable than in the past. The change appeared to occur some fifteen years earlier, in the early 1980s. Not only had inflation and interest rates and their volatilities diminished compared with the...

Using the 2006 and 2010 Health and Retirement Study, we explore how the recent recession impacted the wealth holding and retirement plans of older households in the United States. Of particular interest to us is whether the impact on household asset ownership, asset wealth and household retirement behavior varied with the nativity of the household and its standing in the wealth distribution pri...

[1] The method of recession analysis proposed by Brutsaert and Nieber (1977) remains one of the few analytical tools for estimating aquifer hydraulic parameters at the field scale and beyond. In the method, the recession hydrograph is examined as dQ/dt = f(Q), where Q is aquifer discharge and f is an arbitrary function. The observed function f is parameterized through analytical solutions to th...

A classification system facilitates the communication and understanding of common standardized identification of the nature of cases, helps in diagnosis, prognosis and finally suitable treatment plan for the condition. Gingival recession, a common condition leading to exposure of root surfaces, is seen in both dentally aware population and those with limited access to dental care. There are sev...

The protective amniotic sac that is covering the foetus plays a very pivotal role in many aspects .The material which was once thought to be discarded during the delivery of the baby has now found immense applications for regeneration and revitalization of devitalized tissues. The amniotic membrane can be processed and the dehydrated amnion allograft can be used for ocular transplants, treatmen...

We consider the problem of determining whether or not a convex function f(x) is bounded below over R. Our focus is on investigating the properties of the vectors in the cone of recession 0f of f(x) which are related to the unboundedness of the function.

In an important paper, Burer [2] recently showed how to reformulate general mixed-binary quadratic optimization problems (QPs) into copositive programs where a linear functional is minimized over a linearly constrained subset of the cone of completely positive matrices. In this note we interpret the implication from a topological point of view, showing that the Minkowski sum of the lifted feasi...

Dynamic latent factors estimated from panels of macroeconomic indicators are used to predict future NBER recession dates. Three monthly macro factors are considered: (1) a bond and exchange rates factor extracted from 22 financial time series; (2) a stock market factor extracted from 4 stock market indicators; (3) a real factor extracted from 4 macroeconomic time series. Three main results emer...

Unemployment is strongly associated with mortality on the individual level. The reasons for this association are not fully established. The authors estimated the effects of unemployment and workplace downsizing on mortality during periods of low (1989) and high (1994) unemployment in Finland. They used prospective population registration data containing detailed socioeconomic and demographic in...