Murphy, Anthony(University College Dublin. School of Economics, 1994-07)
A convenient artifical regression based LM test of non-normality in the probit model is derived using a Gram Charlier type A alternative. The test is simply derived and may be extended to the bivariate probit case. The ...
Murphy, Anthony(University College Dublin. School of Economics, 1994-12)
Lagrange Multiplier tests for omitted variables , heteroscedasticity, incorrect functional form and asymmetry in the ordered logit model may be readily calculated using an artificial regression. The proposed artificial ...
Murphy, Anthony(University College Dublin. School of Economics, 1994-10)
Lagrange Multiplier (LM) tests for omitted variables, heteroscedasticity, incorrect functional form, and non-normality in the ordered probit model may be readily calculated using an artificial regression. The proposed ...
Murphy, Anthony(University College Dublin. School of Economics, 1994-11)
A simple artificial regression based on Lagrange Multiplier (LM) test for zero correlation in the censored bivariate probit model is derived. The outer product gradient form of the LM test is not used so the proposed test ...
Traffic loading crossing a bridge is simulated to analyse the correlation between the worst static
and dynamic load case. The worst static cases are obtained through a Monte-Carlo simulation
using weigh-in-motion (WIM) ...
Denny, Kevin(University College Dublin. School of EconomicsUniversity College Dublin. Geary Institute, 2009-07)
I show a simple back-of-the-envelope method for calculating marginal effects in binary
choice and count data models. The approach suggested here focuses attention on
marginal effects at different points in the distribution ...
We demonstrate a table-top broadband emission water window source based on laser-produced high-Z plasmas. Resonance emission from multiply charged ions merges to produce intense unresolved transition arrays in the 2 to 4 ...
At a time when entrance to and residence in western states is a scarce resource, a high proportion of legal immigration is based on family reunion. It has recently been suggested that, rather than giving priority to family ...
Although the land area dedicated to the production of hardy ornamental nursery stock (HONS) is relatively small, the sector places considerable demands on water supplies: production is largely in pots with limited water-holding ...