The study aims to investigate the relationship between R&D spending of twenty-five industrial sub-sectors consisting largest 500 firms Turkey and their financial performances 2013 2019. In this context, effect current lagged on return assets (ROA), equity (ROE), sales (ROS) analyzed with panel data models. As is one first explore at sectoral level in a developing country such as performance, it...

We consider conditions for strict stationarity and ergodicity of a class multivariate BEKK processes $(X_t : t=1,2,\ldots )$ study the tail behavior associated stationary distributions. Specifically, we BEKK-ARCH where innovations are assumed to be Gaussian finite number lagged $X_t$ ’s may load into conditional covariance matrix . By exploiting that have stochastic recurrence equation represen...