Using state-level variation over time in the top deciles of the income distribution, we observe that nonrich households consume a larger share of their current income when exposed to higher top income levels. We argue that permanent income, wealth effects, or upward local price pressures cannot be the sole explanation for this finding. Instead, we show that the budget shares non-rich households...

Plug-in hybrid electric vehicles (PHEVs) have been touted as a transportation technology with lower fuel costs and emissions impacts than other vehicle types. Most analyses of PHEVs assume that the power system operator can either directly or indirectly control PHEV charging to coordinate it with power system operations. This paper examines the incentives of individual drivers making charging d...

A data warehouse typically is a collection of historical data designed for decision support, so it is updated from the sources periodically, mostly on a daily basis. Today’s business however asks for fresher data. Real-time warehousing is one of the trends to accomplish this, but there are a number of challenges to move towards true real-time. This paper proposes ‘Multi-stage Trickle & flip’ me...