Does Jeffrey's prior alleviate the incidental parameter problem?

In this article, we present the user-written commands probitfe and logitfe, which fit probit and logit panel-data models with individual and time unobserved effects. Fixed-effects panel-data methods that estimate the unobserved effects can be severely biased because of the incidental parameter problem (Neyman and Scott, 1948, Econometrica 16: 1–32). We tackle this problem using the analytical and jackknife bias corrections derived in Fernández-Val and Weidner (2016, Journal of Econometrics 192: 291–312) for panels where the two dimensions ( N and T) are moderately large. We illustrate the commands with an empirical application to international trade and a Monte Carlo simulation calibrated to this application.

Download Full-text

Horizontal Branch Evolution

International Astronomical Union Colloquium ◽

10.1017/s0252921100011477 ◽

1989 ◽

Vol 111 ◽

pp. 103-119 ◽

Cited By ~ 1

Author(s):

R.T. Rood ◽

D.A. Crocker

Keyword(s):

Horizontal Branch ◽

Significant Progress ◽

Period Shift ◽

Shift Effect ◽

Parameter Problem

AbstractIn 1973 the outstanding problems confronting the theory of horizontal branch evolution were the “second parameter” problem and the Oosterhoff Effect. Despite significant progress, particularly in the observations and in the observation/theory interface, they remain as the outstanding problems of 1988. The Oosterhoff Effect is now discussed primarily in the guise of the Sandage Period Shift Effect. The morphology of the HB seems more complicated than ever. E.g., many clusters show bimodal distributions along the HB. Here we will tentatively consider those to be manifestations of the second parameter problem. We will indicate why we feel that all previously suggested solutions have all been chimeras.

Download Full-text

Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates

Shock and Vibration ◽

10.1155/2002/617913 ◽

2002 ◽

Vol 9 (4-5) ◽

pp. 193-201 ◽

Cited By ~ 7

Author(s):

Sergio Ferreira Bastos ◽

Lavinia Borges ◽

Fernando A. Rochinha

Keyword(s):

Experimental Approach ◽

Natural Frequencies ◽

Free Edge ◽

Free Vibrations ◽

Elastic Parameter ◽

Sandwich Plates ◽

Rectangular Plates ◽

Elastic Parameters ◽

Non Destructive ◽

Parameter Problem

This article deals with the identification of elastic parameters (engineering constants) in sandwich honeycomb orthotropic rectangular plates. A non-destructive method is introduced to identify the elastic parameters through the experimental measurements of natural frequencies of a plate undergoing free vibrations. Four elastic constant are identified. The estimation of the elastic parameter problem is solved by minimizing the differences between the measured and the calculated natural frequencies. The numerical method to calculate the natural frequencies involves the formulation of Rayleigh-Ritz using a series of characteristic orthogonal polynomials to properly model the free edge boundary conditions. The analysis of the results indicates the efficiency of the method.

Download Full-text