This paper explores the existence and importance of financing constraints for R&D investments in large EU and US manufacturing companies over the 2000-2007 period. The main results obtained by estimating error-correction equations suggest that the sensitivity of R&D investments to cash flow...

When analyzing panel data using regression models, it is often reasonable to allow for time-varying covariate effects. We propose a novel approach to modelling timevarying coefficients in panel data regressions, which is based on penalized regression techniques. To illustrate the usefulness of...

Using telematics data, we study the relationship between claim frequency and distance driven through different models by observing smooth functions. We used Generalized Additive Models (GAM) for a Poisson distribution, and Generalized Additive Models for Location, Scale, and Shape (GAMLSS) that...

We present a novel two-stage gravity specification with period-varying bilateral trade cost terms. We test our specification to confirm the benchmark result on declining international distance elasticities over time, using two new data sets. Analyzing period-varying bilateral trade cost derived...