نتایج جستجو برای: c25

تعداد نتایج: 671  

2012
Yingying Dong Arthur Lewbel

This paper provides a few variants of a simple estimator for binary choice models with endogenous or mismeasured regressors, or with heteroskedastic errors, or with panel fixed effects. Unlike control function methods, which are generally only valid when endogenous regressors are continuous, the estimators proposed here can be used with limited, censored, continuous, or discrete endogenous regr...

2004
Marius Brülhart Robert J. R. Elliott Joanne Lindley

We re-examine the relationship between intra-industry trade and labour reallocation, using individual-level data on manufacturing worker moves in the United Kingdom. The contribution of this analysis is twofold. First, we estimate the impact of intra-industry trade on worker moves between occupations as well as between industries. Second, we run individual-level regressions that allow us to con...

2000
B. M. S. van Praag

This paper has a twofold objective. First, we develop a new method to assess the monetary value for individuals of external effects. The method makes use of an ordinal index of life satisfaction as scored by individual respondents who are subjected in varying intensity to the external effect. Our second objective is to assess, with this method, to what extent noise nuisance effects around Amste...

1997
Louis Lévy-Garboua Claude Montmarquette

We emphasize the major influences of experienced utility gaps or regret, i.e. the difference between what happened and what might have happened, on job satisfaction. The main prediction that we test is that job satisfaction correlates with the wage gaps experienced in the past and present, holding other job-related satisfactions constant, with the possible exception of young workers. We further...

2009
Fredrik Carlsson Peter Martinsson Alpaslan Akay

The Effect of Power Outages and Cheap Talk on Willingness to Pay to Reduce Outages Using an open-ended contingent valuation survey, we analyze how (i) experience of a power outage due to one of the worst storms ever to hit Sweden and (ii) a cheap talk script affect respondents’ WTP to avoid power outages. Experience significantly increases and a cheap talk script decreases the proportion of res...

2005
Johannes Schwarze Rainer Winkelmann Guido Heineck Rafael Lalive Gert G. Wagner Joachim Wolff Christoph Wunder

Much progress has been made in recent years on developing and applying a direct measure of utility using survey questions on subjective well-being. In this paper we explore whether this new type of measurement can be fruitfully applied to the study of interdependent utility in general, and altruism between parents and children in particular. We introduce an appropriate econometric methodology a...

2005
Riccardo Scarpa Mara Thiene

Rock climbers are likely to exhibit preference heterogeneity dictating the way with which such sport is practiced. This has a reflection on the population’s structure of recreational values of rock-climbing destinations, their attributes, and to land management policies. We test this hypothesis on a panel of destination choices by a sample of members of the Italian Alpine Club. Using a latent-c...

2005
Azeem M. Shaikh Edward Vytlacil

This paper considers the evaluation of the average treatment effect of a binary endogenous regressor on a binary outcome when one imposes a threshold crossing model on both the endogenous regressor and the outcome variable but without imposing parametric functional form or distributional assumptions. Without parametric restrictions, the average effect of the binary endogenous variable is not ge...

2002
Shakeeb Khan Arthur Lewbel Songnian Chen

This paper provides a root-n consistent, asymptotically normal weighted least squares estimator of the coefficients in a truncated regression model. The distribution of the errors is unknown and permits general forms of unknown heteroskedasticity. Also provided is an instrumental variables based two stage least squares estimator for this model, which can be used when some regressors are endogen...

Journal: :Journal of lipid research 1963
C C SWEELEY

Isolation of pure sphingomyelin from human plasma on a preparative scale is described. Analyses of fatty acids by gas-liquid chromatography on two polar polyester columns indicate the presence of all evenand odd-carbon, saturated fatty acids from CU to C25 and most of the corresponding monoenoic acids as well. Palmitic acid is the predominant component; seven of the acids constitute over 90% of...

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