Abstract
The convergence of the voice and data worlds is introducing exciting opportunities to companies. As a consequence, Voice over IP (VoIP) technology is attracting increasing attention and interest in the industry. Flexibility and cost efficiency are the key factors luring enterprises to transition to VoIP. However, voice services also introduce a new level of vulnerability to the network. This chapter categorizes and analyzes the most common security threats of a VoIP solution in a corporate environment. Besides that, the authors discuss the most relevant security policies that could have been adopted to mitigate the security vulnerabilities introduced by VoIP. These new policies and practices can have a positive impact on the security of the whole network, not just voice communications.

Abstract

Abstract
Contextual mobile games provide an important opportunity for learning and development by embedding a smooth form of learning in a game. They provide a rich, rewarding, relevant and multifaceted environment in which one can actually put theory into practice in a safe, simulated manner and learn at a far deeper level as a result. They also offer continuous feedback and cooperative team learning in an inquiry-based, authentic environment where players are motivated by rewards and new levels towards achieving game goals. This paper presents a novel development framework and methodology for contextual learning mobile games systems that enables learners to practice and enhance 21st century skills, while generating and playing mobile contextual games. Additionally, we discuss the main results obtained during this Intensive Programme (IP), by looking at the potential of our design approach, the software framework and the learning experience that was afforded to the students.

Abstract

Abstract
Research on scientific production and publications in the field of economics has positively boomed in the last few years. However, hardly any attention has been dedicated to the production of working papers and the consequences they may have within the institutions where they are produced. This paper provides a detailed analysis of the working papers produced and published from an institution that is relatively peripheral in terms of its production of research in economics. It mainly explores the probability of the working papers being published in peer-reviewed journals. Through the use of an extensive series of these working papers, produced between 1985 and the end of 2005, and through the estimation of a logistic regression model, it was concluded that the probability of international publication increases significantly when the working paper is recent and co-written with a researcher from a foreign institution. Such evidence suggests that for success in the 'publish or perish' world of scientific research, one has to be integrated into an international scientific network.

Abstract
Despite connections and common traits between geopolitics and International Business based on geography and location, literature on this matter is scarce. This study aims to contribute to this literature gap, by assessing the importance of Poland's geopolitical factors in FDI location decisions. By applying a hybrid methodology which combines qualitative and quantitative analyses we conclude that there is a connection between Poland's geopolitical factors (stable, variable and interactional) and the volume, origin and distribution of the FDI received.