In public sector procurement, social welfare often depends on the time taken to complete the contract. A leading … departments have introduced innovative contracting methods based on scoring auctions that give contractors explicit time …

National Time Accounting is a way of measuring society's well-being, based on time use. Its explicit form is the U …-index, for quot;unpleasantquot; or quot;undesirablequot;, which measures the proportion of time an individual spends in an … for the unemployed; is U-shaped in age and un-trended over time in the USA although they are trended up in a number of EU …

When economic activity is concentrated over space or over time, it is more efficient. Most production occurs in … thick-market efficiencies that encourage the concentration of activity in certain time periods may be internal to the firm … of the effects. The firm should martial all its forces from time to time in bursts of activity. When thick-market effects …

The history of Daylight Saving Time (DST) has been long and controversial. Throughout its implementation during World …

confirm that the cost of intertemporally substituting activities is increasing over time: when alerts are issued on two …, reset these costs. Our findings imply that a time-varying decision rule that accounts for multiple day air quality forecasts …

The canonical difference-in-differences (DD) model contains two time periods, “pre” and “post”, and two groups … effects change over time. I propose a new balance test derived from a unified definition of common trends. I show how to … time fixed effects, control for unit-specific time trends, or exploit a third difference …