Results 241 to 250 of about 466,237 (288)

Imperfect Synthetic Controls

open access: yesJournal of Applied Econometrics, EarlyView.
ABSTRACT The synthetic control method assumes the existence of a perfect synthetic control, which cannot exist if the outcomes are functions of transitory shocks with nonzero asymptotic variance and may not exist even in expectation for the treated unit. This paper first shows the benefits of estimating synthetic controls for all units.
David Powell
wiley   +1 more source

A Consistent Heteroskedasticity‐Robust LM‐Type Specification Test for Semiparametric Models

open access: yesJournal of Applied Econometrics, EarlyView.
ABSTRACT This article develops a heteroskedasticity‐robust Lagrange Multiplier‐type specification test for semiparametric regression models. The test is able to detect a wide class of deviations from the null hypothesis. The test statistic is based on the estimates from the restricted semiparametric model, can be computed in a regression‐based way, and
Ivan Korolev
wiley   +1 more source

Ionic Liquid-Electrode Interface at Saturation: To Crowd, or Not to Crowd? [PDF]

open access: yesJ Phys Chem Lett
Nguyen BL   +5 more
europepmc   +1 more source

Steady streaming in channels with a porous interior. [PDF]

open access: yesPhys Rev Fluids
Nozaleda GL   +3 more
europepmc   +1 more source

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