The aim of this study is to investigate the problems caused by discharge of polluted air from tunnels into the environment with a specific focus on residential areas. In city tunnels, portal or stacks, pollutant management is a big challenge. Nowadays, air quality management, particularly in urban tunnels, is considered as a part of the ventilation system design. The goal is to see the environm...

The goal of the project is to explore integrated environments allowing the cost-effective deployment of vertical information access portals for specific domains. The project started in January 2010, and will last three years.

Recent studies suggest that the wide variability in type, detail, and reliability of online information motivate expert searchers to develop procedural search knowledge. In contrast to prior research that has focused on finding relevant sources, procedural search knowledge focuses on how to order multiple relevant sources with the goal of retrieving comprehensive information. Because such proce...

Many courtiers around the world have started their e-government programs. E-government portals will be increasingly used by the citizens of many countries to access a set of services. Currently, the use of the e-government portals arises many challenges; one of these challenges is the security issues. E-government portals security is a very important characteristic in which it should be taken i...

This study describes a survey (n=700) carried out in 14 elementary schools in the municipality of Caxias, State of Maranhão, Brazil. The survey was conducted between July and December 2007 in schools from seven neighborhoods on the outskirts of the western part of the municipality, where for the past three years high densities of immature Aedes aegypti mosquitoes have been recorded. The student...