Regression models for panel data are increasingly widely used in socio-economic studies because they consider the relationship between many objects over time; thus can better measure unobservable effects. This study aims to test Okun's law on economic growth rate and unemployment two groups of countries (developed developing). The was conducted period 2008–2019 using a number static dynamic reg...

This paper examines the relationship between insurance market development and economic growth in EU member states period 1998-2018. Our results indicate that there is no causality premium per capita GDP case of 11 out 23 analysed countries, including four countries classified as emerging markets. However, panel data covering all we determined a two-way growth. In short run, has positive signifi...

There are many papers related to stability, some on suppression or on stabilization are one type of them. Functional differential systems are common and important in practice. They are special situations of neutral differential systems and generalization of ordinary differential systems. We discussed conditions on suppression on functional system with Markovian switching in our previous work: “...

The world is currently facing a critical environmental crisis, and the shift toward renewable energy sources has become increasingly urgent [...]

With this Special Focus, we would like to highlight the structuring of environment provided with a solid surface. While in laboratory, often use liquid cultures, many organisms, nobably from soil, usually are living more structured environment. But also creeks, lake sediments, or surfaces stream ocean provide structure, and covered biofilms. In order reach such surface, motility is required. An...

Code to recognise and hence solve the second-order linear ODEs that define the special functions of mathematical physics is being developed for the Reduce ODE solver. It allows an arbitrary, possibly symbolic, affine transformation of the independent variable. At first sight, the problem appears to be one of pattern matching or table look-up, but simple special-purpose code written for each cla...