Computers

  2009 AUG 27 - (VerticalNews.com) -- "Recently, automatic vehicle location (AVL) has become more widely used, affordable and popular than ever before. AVL is used for different tracking purposes, especially for those related to tracking one vehicle or a fleet of vehicles," investigators in Jordan report.

  "Tracking system technology was made possible by the integration of three new technologies: navigational technologies such as global positioning system (GPS), database technologies such as geographic information system (GIS) and communication technology such as general packet radio service (GPRS). The proposed software design 'tracking system' is used to pinpoint the position, ground speed and fuel level of a given vehicle. This improves fleet management by making it secure and more efficient. The system has the ability to detect the optimal path between source and destination, depending on many factors such as travel time, jam, topography and number of traffic lights. The authors applied greedy techniques (GT) such as Dijkstra's and Kruskal's algorithms to a graph weight depending on the proposed cost function (CF). The geofencing technique is applied to the system based on real coordinates and grants security and safety to the fleet of vehicles. The designed software offers more flexibility in loading digital maps," wrote O. Aloquili and colleagues, Hashemite University ...read more

  2009 AUG 27 - (VerticalNews.com) -- "Legacy systems often contain several crosscutting concerns that could potentially benefit from an aspect-oriented programming implementation. In this paper, we focus on the problem of aspect identification in existing code," scientists in Trento, Italy report.

  "The main idea is that use-cases can be defined in order to separate the base logics from the crosscutting concerns to be aspectised. The relationship between the execution traces associated with the use-cases and the executed computational units (class methods) is analysed through concept analysis," wrote M. Ceccato and colleagues ...read more

  2009 AUG 27 - (VerticalNews.com) -- According to recent research from Delhi, India, "The choice of the term-weighting technique and the combination of term weights during retrieval is an important aspect of the web information retrieval (WebIR) system. At their heart, most WebIR models utilise some form of term frequency-based term-weighting technique."

  "The notion is that the more often a query term occurs in a document, the more likely it is that the document meets an information need. We examine an alternative. We propose a model, which assesses the presence of a term in a document not by looking at the actual occurrence of that term, but by a set of non-independent supporting terms, that is context. We expound contextual proximity model (CPM), a novel context-based paradigm, which when used as a part of the web retrieval process, will improve retrieval effectiveness in response to a given multi-term input query," wrote M.P.S. Bhatia and colleagues, University of Delhi ...read more