This paper reviews appropriate non-experimental methods and microeconometric models for recovering the returns to education using individual data. Three estimators are considered: matching methods, instrumental variable methods and control function methods. The properties of these methods are investigated for models with multiple treatments and heterogeneous returns. Data from the British 1958 ...

This paper presents efficient dataflow schemes for parallel string matching. Two subproblems known as the exact matching and the k-mismatches problems are covered. Three parallel algorithms based on multiple input (and output) streams are presented. Time complexities of these parallel algorithms are O((n/d)+α), 0 ≤ α ≤ m, where n and m represent lengths of reference and pattern strings (n >> m)...

<p style='text-indent:20px;'>In this paper we study multiple ergodic averages for "good" variable polynomials. In particular, under an additional assumption, show that these converge to the expected limit, making progress related open problem posted by Frantzikinakis ([<xref ref-type="bibr" rid="b13">13</xref>,Problem 10]). These general convergence results imply several exten...

A wavelet-based multiresolution image representation method is developed matching human visual system (HVS) spatial acuity within multiple regions of interest (ROIs). ROIs are maintained at high (original) resolution while peripheral areas are gracefully degraded. Variable resolution images are generated by selectively scaling wavelet (detail) coefficients prior to reconstruction. The technique...

Many species of territorial songbirds exhibit a behavior known as song-type matching, in which a male sings the same song type that his neighbor is singing. Song-type matching is associated with increased aggression, but researchers have not come to a consensus on its adaptive function. Building on studies that identify singing performance as a variable relevant to sexual selection, we hypothes...

Tracking the target that maneuvers at a variable turn rate is a challenging problem. The traditional solution for this problem is the use of the switching multiple models technique, which includes several dynamic models with different turn rates for matching the motion mode of the target at each point in time. However, the actual motion mode of a target at any time may be different from all of ...