On Sinking and Swimming

Sinking, Swimming, or Learning to Swim in Medicare Part D.

Under Medicare Part D, senior citizens choose prescription drug insurance offered by numerous private insurers. We examine nonpoor enrollees' actions in 2006 and 2007 using panel data. Our sample reduced overspending by $298 on average, with gains by 81 percent of them. The greatest improvements were by those who overspent most in 2006 and by those who switched plans. Decisions to switch depend...

Sinking or Swimming in the Sea of Data

on semihypergroups and hypergroups

in this thesis, first the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a $(l,gamma)$-associated hypersemigroup $(h, ast)$ derived from some family of $lesssim$-preordered semigroups to be a hypergroup, are given. second, by proving the fact that the concrete categories, semihypergroups and hypergroups have not free objects we will introduce t...

Plankton sinking and turbulence

To overcome sinking, plankton have devised various types of strategies. One is swimming, that is, an active, energy-consuming self-propulsion than can oppose gravitational sinking. Other phytoplankters can modify their buoyancy, becoming, at least for some time, positively buoyant. Others can exploit the turbulence in the mixed layer, using it to stay suspended for longer times. This latter opt...

Sinking treasure

social engagements. With the Bologna system, everything is fitted to match a 40 hour per week work schedule for the entire year allowing only for 6 weeks of holiday and one week of illness. Many students are now protesting against this reduction of university to a school-like system. Students also protested against tuition fees, which have been introduced only recently in a break with a long tr...