This paper provides a strategic analysis of the competitiveness of Greek tourism. It illustrates the importance of tourism as an economic activity and analyses the current situation and structural problems of Greece as a destination. Although Greece offers unique nature, culture and heritage, the lack of differentiation of the tourism product as well as competitive disadvantages in marketing an...

Cues that signal the possibility of receiving an electric shock reliably induce defensive activation. To determine whether cues can also easily reverse defensive reactions, a threat reversal paradigm was developed in which a cue signaling threat of shock reversed its meaning across the course of the study. This allowed us to contrast defensive reactions to threat cues that became safe cues, wit...

We consider dynamic scenes consisting of moving points whose motion is constrained to happen in one of a pencil of planes. This is for example the case when rigid objects move independently, but on a common ground plane (each point moves in one of a pencil of planes parallel to the ground plane). We consider stereo pairs of the dynamic scene, taken by a moving stereo system, that allow to obtai...

We summarize the main known properties of factorization-based projective structure from motion, including the basic formulation, depth estimation and how it can sometimes be avoided, and some suggestions about statistical properties.

Recent trend in reducing the size of products has given Micro Electrical Discharge Machining (MEDM) a significant amount of research attention. Due to the high precision, low tolerance and good surface quality that it can deliver, MEDM is potentially an important process for fabrication of micro-tools, micro-components and parts with micro-features. This paper briefs and highlights the various ...

In Plan9 most resources are provided as files, including regular on disk stored files. When the set of files grow, it is important to be able to quickly locate files based on their contents. This paper describes the set of tools documented in tags(1), which provides file indexing and content based searching for Plan 9, using a file system to provide the search interface.

The balance of safety and wellbeing of the public is disturbed by an emergency situation. Emergency responders try to mitigate this danger and restore the balance of public welfare and security during an emergency. This act is termed as emergency response. These emergencies could occur at a national level and hence they can be large and complex which could necessitate in the cooperation of seve...

Studies examining friendships among Mexican-American adolescents have largely focused on their potentially negative influence. The current study examined the extent to which deviant and achievement-oriented friend affiliations are associated with Mexican-American adolescents' school adjustment and also tested whether support from friends and parents moderates these associations. High school stu...