Proper traffic control is critical in highway work zone safety. Traffic control devices such as signs, barricades, cones, and plastic safety barrels are often used. Accidents can occur because of improper work zone design, improper work zone housekeeping, and driver negligence. One solution is to automate safety devices. This paper presents a mobile safety barrel robot. The Robotic Safety Barre...

This paper presents a theoretical and practical framework for Informatics research in the area of education. The context for this research is Sweden where schools often have an advanced infrastructure of computers and networks but the use, by teachers, of the technology, is very limited. The reason for this is two highly interrelated issues, first, teachers do not know what to do with the techn...

This report describes the methods and data sources used to estimate ecological parameters and to construct mass-balance models of oceanic ecosystem of the Atlantic using the Ecopath with Ecosim (EwE) software. Six models were constructed representing oceanic ecosystems of the North, Central and South Atlantic for the 1950s and the late 1990s (1997-1998). The first section of this report charact...

This paper would explore the problem of spam. It would explore its nature and also the reasons why it is a security risk. It would also describe some of the techniques that are currently used to deal with spam including basic technical and policy methodology. This paper intends to be a general-information source to the problem of spam and also provides information of where to get more detailed ...