Mobile devices proved to be disruptive for businesses. Installing, accessing and buying a new application become easy. Application marketplaces called Application Stores provides security (due to certification process imposed to developers), accessibility, application lifecycle serving as a...

In practice, there is a massive time lag between data loss and its cause identification. The existing techniques perform it comprehensively, but they consume too much time, so there is a need for fast and reliable methods. The article’s purpose is to develop a rapid methodology to assess the...

This paper proposes a test for whether data are over-represented in a given production zone, i.e. a subset of a production possibility set which has been estimated using the non-parametric Data Envelopment Analysis (DEA) approach. A binomial test is used that relates the number of observations...

Die Informationsflut, die dem Entscheidungsträger im Internet aber auch in internen Quellen begegnet, lässt sich nur schwer bewältigen, Daher ist die verfügbare Menge der Informationen zunächst in interessante und uninteressante Informationen zu unterteilen. Dem Entscheidungsträger sind...

We propose a straightforward approach to obtain a more efficient estimate of the integrated variance of an asset through a cross-sectional combination with a futures contract written on it. Our method constructs a variance-preserving series with reduced noise size as a linear combination of the...

Goal: This research aims to seek evidence of inconsistencies or signs of fraud or other financial crimes in the assets declared by candidates for political office by applying the Newcomb-Benford Law (NB).Theoretical foundation: The mainly empirical research is based on the ability of asset...

Multiple agent-based models (ABM) on social-ecological systems exist in parallel investigating similar research questions. However, the choice of a particular human decision model is often not sufficiently empirically or theoretically substantiated in the model documentation. Furthermore, model...

Dynamic modeling has long been a valuable tool to support the analysis of ecological and economic systems, particularly their equilibrium properties and responses to internal or external forcing. Few studies so far, however, use modeling to address processes of change over time in coupled...

Galileo suggested that what is not measurable be made measurable. It is this principle which underscores an unwritten law of both the sciences and the social sciences that it is better to measure than not to measure. But, the assumption of measurability is rarely considered. In this paper, we...

The book has been compiled from selected papers, presented at the 5th International Scientific Conference “e-Governance”, held within the Days of Science of the Technical University-Sofia in June 2013. It highlights latest research achievements and practical solutions obtained in the field...