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ESTGV - DI - Artigo em ata de evento científico internacional

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http://hdl.handle.net/10400.19/5886

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Browsing ESTGV - DI - Artigo em ata de evento científico internacional by Author "Albuquerque, Daniel"

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  • LowCost system architecture for monitoring environmental parameters in circulating automotive roads
    Publication . Costa, João; Wanzeller, Cristina; Albuquerque, Daniel; Caldeira, Filipe; Tomé, P.; Martins, Pedro
    A qualidade de vida nas cidades é cada vez mais uma preocupação. A análise de parâmetros ambientais é nesta base uma preocupação ao nível das entidades responsáveis pela gestão das cidades. Neste artigo apresenta-se uma arquitetura de um sistema de baixo custo para monitorização de parâmetros ambientais em vias de circulação das cidades. Palavras Chave – Cidades Inteligentes, IoT, Arquitetura de Sistema. Abstract — The quality of life in cities is nowadays a concern. The city management authorities usually are concernd with the environmental parameters. This article presents an architecture of a low-cost system for monitoring environmental parameters in Automotive Roads.
    2019Conference object Restricted access Show more
  • NoSQL Scalability Performance Evaluation over Cassandra
    Publication . Abbasi, Maryam; Sá, Filipe; Albuquerque, Daniel; Wanzeller, Cristina; Caldeira, Filipe; Tomé, P.; Furtado, Pedro; Martins, Pedro
    The implementation of Smart-Cities is growing all over the world. From big cities to small villages, information able to provide a better and efficient urban management is collected from multiple sources (sensors). Such information has to be stored, queried, analyzed and displayed, aiming to contribute to a better quality of life for citizens and also a more sustainable environment. In this context it is important to choose the right database engine for this scenario. NoSQL databases are now generally accepted by the database community to support application niches. They are known for their scalability, simplicity, and key-indexed data storage, thus, allowing an easy data distribution and balancing over several nodes. In this paper a NoSQL engine is tested, Cassandra, which is one of the most scalable, amongst most NoSQL engines and therefore, a candidate for use in our application scenario. The paper focuses on horizontal scalability, which means that, by adding more nodes, it is possible to respond to more requests with the same or better performance, i.e., more nodes mean reduced execution time. Although, adding more computational resources, does not always result in better performance. This work assesses how each workload (e.g., data volume, simultaneous users) influence scalability performance. An overview of the Cassandra database engine is presented in the paper. Following, it will be tested and evaluated using the benchmark Yahoo Cloud Serving Benchmark (YCSB).
    2018-10-25Conference object Restricted access Show more