PPGCC - Programa de Pós-graduação em Ciência da Computação
URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/596
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Resultados da Pesquisa
Item A proposal to improve wearables development time and performance : software and hardware approaches.(2019) Amorim, Vicente José Peixoto de; Oliveira, Ricardo Augusto Rabelo; Oliveira, Ricardo Augusto Rabelo; Aquino, André Luiz Lins de; Rodrigues, André Miguel; Ramos Filho, Heitor Soares; Martins, Henrique Resende; Nacif, José Augusto Miranda; Silva, Saul Emanuel DelabridaWearable devices are a trending topic in both commercial and academic areas. Increasing demand for innovation has raised the number of research and products, addressing brandnew challenges, and creating profitable opportunities. Current wearable devices can be employed in solving problems in a wide variety of areas. Such coverage generates a relevant number of requirements and variables that influences solutions performance. It is common to build specific wearable versions to fit each targeting application niche, what requires time and resources. Currently, the related literature does not present ways to treat the hardware/software in a generic way enough to allow both parts reuse. This manuscript presents the proposal of two components focused on hardware/software, respectively, allowing the reuse of di↵erent parts of a wearable solution. A platform for wearables development is outlined as a viable way to recycle an existing organization and architecture. The platform use was proven through the creation of a wearable device that was enabled to be used in di↵erent contexts of the mining industry. In the software side, a development and customization tool for specific operating systems is demonstrated. This tool aims not only to reuse standard software components but also to provide improved performance simultaneously. A real prototype was designed and created as a manner to validate the concepts. In the results, the comparison between the operating system generated by the tool versus a conventional operating system allows quantifying the improvement rate. The former operating system showed approximate performance gains of 100% in processing tasks, 150% in memory consumption and I/O operations, and approximately 20% of reduction in energy consumption. In the end, performance analysis allows inferring that the proposals presented here contribute to this area, easing the development and reuse of wearable solutions as a whole.Item IDEAL-TRAFFIC : a framework for building monitoring systems for intelligent transportation systems.(2012) Silva, Saul Emanuel Delabrida; Pereira Junior, Álvaro Rodrigues; Oliveira, Ricardo Augusto RabeloThe evolution and dissemination of network communication technology and the advanced status of embedded devices encourage the creation of solutions for monitoring cities in various environments. Intelligent Transportation Systems (ITS) is an area that makes use of these technologies, so that end-users can benefit from applications that deliver information in real time. On the other hand, administrating these applications is not a trivial task. Components may fail and invalidate an application. Usually, traffic application's architecture is centralized, fact that increases the cost of maintenance and reduces the flexibility of resources reuse. There are features required on ITS such as adaptability, scalability, heterogeneity, interoperability, openness, accessibility, and flexibility. It was not found on the literature any related work that aims to cover all these features, although some of them are requisites for ITS developed for use in North America and Europe. In this work we present IDEAL-TRAFFIC: a framework based on SOA architecture for building monitoring applications, with the ability to manage the state of the applications. IDEAL-TRAFFIC provides a simple interface that enables system administrators create applications and make them available to end-users. A self-adaptation process is included in the IDEAL-TRAFFIC framework in order to ensure fault tolerance. For the implementation of these features, rules of the application need to be considered and might depend upon the minimum of human intervention, since the framework can use third part systems or legacy systems to retrieve relevant data to continue running an application. In this thesis we have applied the IDEAL-TRAFFIC to two use cases to illustrate its use for ITS. In the first use case, we demonstrate the use of the framework in static nodes. In the second use case, we show how the framework may be integrated with vehicular networks. Three experiments have been launched. In all executions we reproduced the first use case over embedded devices. In order to demonstrate the framework accordance with the main ITS requirements, we illustrate the creation of services using XML SOA files, the communication among devices, the integration of the framework with a legacy system, and the scalability of the system. In all experiments we have obtained the expected results. This fact shows that the IDEAL-TRAFFIC is in accordance with the main ITS requirements. In the experiments launched, it was proved that the use of XML is an effective and efficient alternative, to create applications using services available by several nodes on the network. The proposed process reduces the time of creation of applications.