Modern historical vexillology of pre-Modern epoches deals mostly not with real banners but with their descriptions or images. This is why one should apply also for this disciplin (now breacking out from museums) all methods of historical source criticism. The main task of vexillology consists not just in describing its objects but in studying specific features of cultural interrelations designated by banners. The article traces, how European vexillological traditions have been formed in late Antiquity and throughout Middle Ages.
We address the external effects on public sector efficiency measures acquired using Data Envelopment Analysis. We use the health care system in Russian regions in 2011 to evaluate modern approaches to accounting for external effects. We propose a promising method of correcting DEA efficiency measures. Despite the multiple advantages DEA offers, the usage of this approach carries with it a number of methodological difficulties. Accounting for multiple factors of efficiency calls for more complex methods, among which the most promising are DMU clustering and calculating local production possibility frontiers. Using regression models for estimate correction requires further study due to possible systematic errors during estimation. A mixture of data correction and DMU clustering together with multi-stage DEA seems most promising at the moment. Analyzing several stages of transforming society’s resources into social welfare will allow for picking out the weak points in a state agency’s work.