Volume 43 first presents results of the multi-factor model development for predicting external economic activity of industrial companies as a tool for substantiating effective alternatives for their development. Following this, the authors investigate the behaviour of Federal Reserve chairmen as viewed in terms of the Taylor rule. In particular, we estimate a Taylor rule via an unobserved component model where: inflation and output gaps are obtained via bivariate state space model, the natural interest rate is time-varying and modeled as a random-walk, and inflation and output gap coefficients are modeled as smoothing spline process. The formation of a Mexican megalopolis is explored in an effort to understand the role of its metropolis. In this sense, the analysis focuses on the potential compatibility and interactions between metropolises. In the wake of historical and political events, stakeholder pressure can trigger shareholders to divest from politically incorrect markets with the goal of accomplishing socio-political change. As a comparative study, one paper reviews political divestiture to provide a theoretical framework for divestiture in the age of global warming. Next, this compilation utilises a small-scale econometric model to study the dynamics of the Irish debt-to-gross domestic product ratio. The role of world gross domestic product growth, domestic gross domestic product growth, real effective exchange rate, interest rate and primary balance is analysed in the debt dynamics. The authors offer an elementary microeconomic underpinning for the macroeconomic observation that while the number of workers entering the labour force is increasing, output and wages remain stagnant, and the way forward is technological change. Lastly, via refined equilibrium conditions and assumptions about regular conditional probability measures, a precise random differential equation generating xt for any t ≥ 0 is presented.