The design of intelligent safety systems and interfaced that allow the reliable products and robust enough for use in security, necessary for the ordinary citizen, has been the subject of much discussion and study by the Brazilian federal Government, before the receipt of relevant sportive events. Sensitive sectors and permanent presence as notable are security and defense in the face of challenges and expectations expected. The challenge for the design of these systems is to develop networks of different protocols that are interoperable and shared. Within this context is that this article seeks to contribute to a globally technologies used in Comparative Public Safety radio communications (APCO-25 System, TETRA and TETRAPOL) showing a real case study with the three communication technologies tests carried out in accordance with the national agency of telecommunications -ANATEL and the Ministry of justice through the National Secretariat of Public Security.
Resenha da obra "O custo-aluno nas unidades de uma Rede Municipal de Educação Básica", de autoria de Jaqueline Aparecida Cardoso, apresentado como dissertação no Programa de Pós-Graduação em Educação da Universidade Federal do Paraná (UFPR), Setor de Educação, em Curitiba, 2018.
Curitiba is a city in south Brazil with an estimated population of 1.8 million inhabitants [3]. The teledensity in this city is over 1.2 cellular for each person and, four players, actually are working with Long Term Evolution (LTE) in the city. However, the quality of the LTE cell coverage has not yet reached the standard of the Third Generation Partnership Project (3GPP) group. Considering the growing demand for better quality of service provided by telecom operators, this study aims to develop a methodology for analyzing the quality of cellular LTE coverage in Curitiba that can easily be extended to any other big city in Brazil, since we consider a dense urban region, in the frequency range of 2600 MHz and a bandwidth of 20 MHz. The methodology includes conducting a proper drive test in a commercial network with the processing of data obtained through the commercial software, as well as developing a spreadsheet to perform a theoretical project for the purpose of comparing and validating the methodology.
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