Results 201 to 210 of about 230,401 (283)

Human movement patterns predict task-unrelated thought. [PDF]

open access: yesPLoS One
Wong AY   +4 more
europepmc   +1 more source

Instrumental variables estimation of large demand systems with an application to fruit and vegetable demand and price index

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This paper derives the asymptotic properties of an iterated three‐stage least squares (I3SLS) estimator and applies it to estimate a Quadratic Almost Ideal Demand (QUAID) system for 47 fruits and vegetables with endogenous prices. We calculate an exact price index from the estimates and compare it with several commonly used price indexes.
Shaonan Wang, Chen Zhen, Peyton Ferrier
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

Count Data Models With Heterogeneous Peer Effects Under Rational Expectations

open access: yesJournal of Applied Econometrics, EarlyView.
ABSTRACT This paper develops a peer effect model for count responses under rational expectations. The model accounts for heterogeneity in peer effects across groups based on observed characteristics. Identification is based on the linear model condition that requires the presence of friends of friends who are not direct friends.
Aristide Houndetoungan
wiley   +1 more source

Development of a step‐gradient simulated moving bed process for the polishing of monoclonal antibodies with anion exchange chromatography

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND In recent years, biopharmaceutical applications in medicine have seen explosive growth and the need for efficient, rapid and inexpensive purification of these targets is the topic of tremendous research and development. The need to improve process efficiency has been an active area of investigation due to the tremendous potential ...
Yasmina MJ Harsy   +5 more
wiley   +1 more source

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