The most frequently used indicators for the productivity and impact of scientists are total number publication ($N_{pub}$), citations ($N_{cit}$) Hirsch (h) index. Since seminal paper Hirsch, in 2005, it is largely debated whether h index can be considered as an indicator independent $N_{pub}$ $N_{cit}$. Exploiting Paretian form distribution papers authored by a researcher, here we discuss scal...

Bitmap indexes are known as the most effective indexing methods for range queries on append-only data, especially for low cardinality attributes. Recently, bitmap indexes were also shown to be just as effective for high cardinality attributes when certain compression methods are applied. There are many different bitmap indexes in the literature but no definite comparison among them has been mad...

In this paper we provide an overview of recent developments in the methodology for the construction of composite coincident and leading indexes, and apply them to the UK. In particular, we evaluate the relative merits of factor based models and Markov switching specifications for the construction of coincident and leading indexes. For the leading indexes we also evaluate the performance of prob...