Education is a well-known driver of (entrepreneurial) income. The measurement of its influence, however, suffers from endogeneity suspicion. For instance, ability and occupational choice are mentioned as driving both the level of (entrepreneurial) income and of education. Using instru-mental variables can provide a way out. However, two questions remain: whether endogeneity is really present an...

This paper considers the nonparametric and semiparametric methods for estimating regression models with continuous endogenous regressors. We list a number of different generalizations of the linear structural equation model, and discuss how three common estimation approaches for linear equations — the “instrumental variables,” “fitted value,” and “control function” approaches — may or may not b...

Manganese oxide catalyst promoted with sodium and supported on silica exhibits fairly good activity and selectivity towards the synthesis of ethylene from methane at the optimum operating conditions. Methane and oxygen were fed into a tubular fixed bed reactor packed with catalyst under atmospheric pressure. The effects of temperature, residence time and feed composition on conversion, selectiv...

The impact of endogeneity and measurement error on the estimated effect of household economic resources on child height is demonstrated. These econometric problems contribute to uncertainty in the literature about the significance of income effects on child health and nutrition. Results are based on a household survey from Papua New Guinea, where repeated within-year observations on households ...

The effect of job satisfaction on organisational commitment has attracted a great deal of interest in the human resource management and organizational psychology literatures. However, much of the empirical work is based on relatively small sample sizes and neglects the possibility of endogeneity of job satisfaction, potentially leading to biased estimates of the effect of job satisfaction on or...

The development of models to understand the behavior of an Urban Transportation System (UTS) as a whole is crucial, not only for the evaluation and exploration of policies to manage the level of pollution and congestion in the cities, but also for solving problems such as the efficient provision of utilities, infrastructure and schools. UTS can be viewed as the result of the interaction of many...

Menteshashvili O, et al. Pulmonary tuberculosis in prisons of the ex-USSR state Georgia: results of a nationwide prevalence survey among sentenced inmates. Antimicrobial prescribing patterns for respiratory diseases including tuberculosis in Russia: a possible role in drug resistance? Jpyridinium chloride is useful for isolation of Mycobacterium tuberculosis from sputa subjected to long-term st...