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Spatial dependence and individual-tree growth models I. Characterising spatial dependence

Fox, J. C.; Bi, H. Q.; Ades, P. K. - 2007

Spatial dependence in individual-tree diameter, and growth model residuals was characterised for an even-aged Eucalyptus pilularis (Smith) experiment in New South Wales,. Australia. The magnitude of spatial dependence changed as the dominance of competitive mechanisms and micro-site influences...

Persistent link: https://www.econbiz.de/10009448357

The Influence of Health on Labor Productivity: An Analysis of European Conscription Data

Knapp, David - 2007

Height has been used in a growing literature as a measure of net nutrition throughout the first 20 years of life. This … adult height over aperiod of 150 years by distributing the measured adult height over the age distribution of the male … population. This calculation creates a measure of the age-distributed height of the laborforce, which then permits an analysis …

Persistent link: https://www.econbiz.de/10009475139

Demystifying the German "Armament Miracle" During World War II. New Insights from the Annual Audits of German Aircraft Producers

Budrass, Lutz; Scherner, Jonas; Streb, Jochen - 2005

Armament minister Albert Speer is usually credited with causing the boom in German armament production after 1941. This paper uses the annual audit reports of the Deutsche Revisions- und Treuhand AG for seven firms which together represented about 50 % of the German aircraft producers. We...

Persistent link: https://www.econbiz.de/10009444172

CAUSAL EFFECT ESTIMATION UNDER LINEAR AND LOG-LINEAR STRUCTURAL NESTED MEAN MODELS IN THE PRESENCE OF UNMEASURED CONFOUNDING

Wang, Chia-Hao - 2010

In randomized clinical trials where the effects of post-randomization factors are of interest, the standard regression analyses are biased due to unmeasured confounding. The instrumental variables (IV; Angrist et al., 1996) and G-estimation procedures under structural nested mean models (SNMMs;...

Persistent link: https://www.econbiz.de/10009439201

Production Contracts and Farm Business Growth and Survival

Key, Nigel D. - 2010

In recent decades there has been a substantial increase in the scale of production and the use of production contracts in the hog sector. This paper explores empirically whether these two phenomena are related by examining whether the use of production contracts has allowed finish hog operations...

Persistent link: https://www.econbiz.de/10009446078

U.S. Alcohol Consumption: Tax Instrumental Variables in Quadratic Almost Ideal Demand (QUAIDS)System

Jithitikulchai, Theepakorn - 2011

Replaced with revised version of poster 08/30/11.

Persistent link: https://www.econbiz.de/10009446993

Understanding the relationship between founder-CEOs and firm performance

Adams, Renee; Heitor, Almeida; Ferreira, Daniel - 2009

We use instrumental variables methods to disentangle the effect of founder–CEOs on performance from the effect of performance on founder–CEO status. Our instruments for founder–CEO status are the proportion of the firm's founders that are dead and the number of people who founded the...

Persistent link: https://www.econbiz.de/10009448159

Wohlstand und Gesundheit : neuere empirische Resultate und theoretische Erklärungsversuche

Hupfeld, Stefan - 2004

Diese Arbeit umfasst eine Darstellung des Grossman-Modells und der Akkumulation von Gesundheitskapital. Es werden ältere empirische Untersuchungen (Wagstaff) vorgestellt und aus methodischer Sicht kritisiert, verbesserte ökonometrische Methoden vorgeschlagen und deren Anwendung in aktuellen...

Persistent link: https://www.econbiz.de/10009471616

Accrual Noise Ratio as a Measure of Accrual Reliability

Njoroge, Kenneth - 2009

I develop an empirical model that estimates a firm-specific accrual noise ratio (ANR), an operational and statistically grounded measure of accrual reliability, and test the measure's construct validity. The model allows accrual reliability to vary across firms, which is particularly important...

Persistent link: https://www.econbiz.de/10009475468

Solving and Testing for Regressor-Error (in)Dependence When no Instrumental Variables are Available: With New Evidence for the Effect of Education on Income

Ebbes, Peter; Wedel, Michel; Böckenholt, Ulf; … - 2005

This paper has two main contributions. Firstly, we introduce a new approach, the latent instrumental variables (LIV) method, to estimate regression coefficients consistently in a simple linear regression model where regressor-error correlations (endogeneity) are likely to be present. The LIV...

Persistent link: https://www.econbiz.de/10009477430