In this paper, we propose a varying coefficient panel data model with unobservable multiple interactive fixed effects that are correlated the regressors. We approximate each function by B-spline, and robust nonlinear iteration scheme based on least squares method to estimate functions of interest. also establish asymptotic theory resulting estimators under certain regularity assumptions, includ...

In this research, the demand function of drinkable  water in Qazvin Province was estimated using dynamic and static methods. The required data were collected from the data of the provinces of Qazvin in the time period (1996-2016) and collected by referring to the statistical system of Statistics Center of Iran and the provincial planning and budget organization of Qazvin Province. The explanato...

Does a provider’s technology support strategy influence its buyers’ postadoption IT service use? We study this question in the context of cloud infrastructure services. The provider offers two levels of support, basic and full. Under basic support, the provider handles simple service quality issues. Under full support, the provider also offers education, training, and personalized guidance. Usi...

This article tests whether points in tennis are independent and/or identically distributed (iid). We model the probability of winning a point on service and show that points are neither independent nor identically distributed: winning the previous point has a positive effect on winning the current point, and at ‘important’ points it is more difficult for the server to win the point than at less...

Increasing evidence from the empirical economic and psychological literature suggests that positive and negative well-being are more than opposite ends of the same phenomenon. Two separate measures of the dependent variable may be needed when analyzing the determinants of subjective well-being. We argue that this conclusion reflects in part the use of too restrictive econometric models. A flexi...

This study used panel data models with spatial error correlation to analyze private tree planting in the US South from 1955 to 2003. Controlling for statewide, fixed effects allows us to disentangle the effect of spatial interaction from that of state heterogeneity and omitted variables. The results show that there is significant spatial interdependence among the southern states in private tree...

The commitment to public health insurance for children has increased in recent years, leading to two potentially contradictory concerns for public policy: that expanded availability of public insurance may lead families to decline private insurance for their children and that the additional public coverage may not reach many children without insurance. We use data from the 1987-1993 Surveys of ...

This paper introduces a dynamic panel data model with exogenous variables where the dynamic behavior is allowed to differ between cross-section units. The framework is a mixture model obtained by mixing two regression model with different paramters according to some mixing weights. The parameters in the model are estimated by the method of maximum likelihood, and it is shown that the maximum li...