The articles in this volume are selected from the contributions to two international conferences. Authors and teams tackle general economic approaches and developments with respect to new concepts for the production possibility frontier, the connection of development and exports diversification and improvements to the business process. Other contributors address economic sustainability with respect to an institutional path to sustainable growth, available financial instruments, behavioral models of economic expectations, solutions for waste treatment as well as to technological aspects related to security, privacy and IT governance. Finally, a third group of authors discusses health policy in the EU and postsecondary education in Bulgaria as aspects of public welfare.

Jürgen Plöhn is Professor of Economics and Politics at EBC University of Applied Sciences Hamburg and Professor of Political Science at Martin-Luther-University Halle. George Chobanov is Professor emeritus at Sofia University St. Kliment Ohridski and former Dean of the Faculty of Economics and Business Administration.