the southern shores of caspian sea is subjected to several atmospheric factors due to its geographical position. north atlantic oscillation(nao) one of the effective phenomenon's affects the most part of hemisphere included caspian sea. in this research negative and positive phases of nao considered with variability of temperature and precipitation of southern shores of caspian sea in a 30...

Service discovery is an essential component for distributed mobile applications in vehicular communication systems. While there have been numerous service discovery protocols, applications for vehicular communication systems pose additional requirements: discover services according to geographical position inside dynamic mobile environments. In this article, we propose a geographical location a...

Because of the expansion of geo-positioning tools and the democratization of geographical information, the amount of geo-localized data that is available around the world keeps increasing. So, the ability to efficiently retrieve informations in function of their geographical facet is an important issue. In addition to individual properties such as position and shape, spatial relations between o...

Due to the fact that mobile devices are in widespread use, many applications including Location Based Services (LBS) had been involved to deliver relevant information to customers anywhere at any time and thus based on their profile and geographical position. However, with the increasing number of geographical data and distributed geospatial applications with heterogeneous databases, many probl...

Is the use of an online course delivery format, when compared with the more traditional face-to-face format, good or bad in the context of university education? Those who subscribe to the no-significant-difference perspective argue that online delivery is good, because it allows students with time and geographic distance constraints to obtain the education that they need, with no significant ne...

Point of Departure " First Law of Geography " : " Everything is related to everything else, but near things are more related than distant things. " — Waldo Tobler, 1970 Fundamental Dialectological Postulate: " Geographically proximate varieties tend to be more similar than distant ones. " — Nerbonne & Kleiweg, 2007 Tested on different types of data (surveys, corpora) Several kinds of geograph...

Among the various facets of Information Retrieval in textual data, the search for information located in space and time constitutes a full research field. Indeed, it requires, for indexing as for retrieval, specific linguistic analyses and resources. The present paper roots in the GéoSem project, whose aim is to develop advanced, semantic-based methods for geographical documents retrieval. Toda...

Recent years have witnessed an increasing availability of heterogeneous sensor networks that consist of a large number of resource constrained nodes (sensors) and a small number of powerful resource rich nodes (actors). Such heterogeneous Wireless Sensor Actor Network (WSANs) offer improvement of sensor networks' capacity/coverage, energy conservation and network lifetime. This paper investigat...

Traffic safety is a very important issue in modern society and the last couple of years researchers have started looking at telecommunication solutions to enhance traffic safety. More specifically researchers are looking at emergency alert services, enabling cars to warn eachother for incidents (slippery road, accident, . . . ). Existing forwarding protocols for vehicular networks often use an ...

Measuring how much cybercrime exists is typically done by first defining cybercrime and then quantifying how many cases fit that definition. The drawback is that definitions vary across countries and many cybercrimes are recorded as traditional crimes. An alternative is to keep traditional definitions of crime and quantify the amount of associated information and communication technologies (ICT...