Acoustical Behavior of Segmented Ceilings

Acoustical analysis of engagement behavior in children

In this work we analyze the expressive manifestation of a child’s engagement behavior on his speech as well as in the speech of psychologist interacting with the child. Visual cues such as facial gestures and gaze are known to be informative of engagement, but here, we examine the less studied speech cues of the children’s non-verbal vocalizations. We study the spectral, prosodic and duration f...

Ceilings of Monotone Boolean Functions

This paper considers a particular relationship defined over pairs of n-argument monotone Boolean functions. The relationship is of interest since we can show that if ( g, h ) satisfy it then for any n-argument monotone Boolean function f there is a close relationship between the combinational and monotone network complexities of the function (f /\ g) \/ h. We characterise the class of pairs of ...

Studies on the Acoustical Behavior of Seventeen-year Cicadas

Multiple Glass Ceilings

Multiple Glass Ceilings Both vertical (between job levels) and horizontal (within job levels) mobility can be sources of wage growth. We find that the glass ceiling operates at both margins. The unexplained part of the wage gap grows across job levels (glass ceiling at the vertical margin) and across the deciles of the intra-job-level wage distribution (glass ceiling at the horizontal margin). ...

The Economics of Death Ceilings

Incentive design involves a tradeoff between motivating agents and distorting their efforts; for many tasks the distortions are such that flat rewards may be optimal. Yet organizations of all types from school boards to the FBI increasingly utilize rewards based on observable performance metrics. We describe the effects of one such attempt, implemented in 2004, to motivate Chinese bureaucrats t...