Ciências e Tecnologia | Comunicações em congressos, conferências, seminários/Communications in congresses, conferences, seminars
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Browsing Ciências e Tecnologia | Comunicações em congressos, conferências, seminários/Communications in congresses, conferences, seminars by Sustainable Development Goals (SDG) "11:Cidades e Comunidades Sustentáveis"
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- Context-aware mobile applications in Fog Infrastructure: a literature reviewPublication . Barros, Celestino Lopes de; Rocio, Vitor; Sousa, André; Paredes, HugoToday’s cloud computing techniques are becoming unsustainable for real time applications as very low latency is required with billions of connected devices. New paradigms are arising; the one that offers an integrated solution for extending cloud resources to the edge of the network and addresses current cloud issues is Fog Computing. Performing Fog Computing brings a set of challenges such as: provisioning edge nodes to perform task volumes downloaded from the Cloud; placing task volumes on edge nodes; resource management on edge nodes; need for a new programming model; programming, resource management, data consistency service discovery challenges; privacy and security and improving the quality of service (QoS) and user experience (QoE). This paper aims at introducing the Fog Computing concept and it presents a literature review on the way it is applied: context-sensitive applications and context-sensitive mobile service platforms. The result of the study is presented as the current research challenges for context aware mobile applications in Fog Computing infrastructure.
- A gestão dos resíduos urbanos no município de Teresópolis: uma avaliação socioambientalPublication . Gomes, Natalia; Carapeto, CristinaEm 1987, o Relatório Brundtland apontou a necessidade de promover o crescimento sustentável, uma vez que a escalada populacional e industrial estavam causando enormes desafios ao meio ambiente. A geração de resíduos excedentes no Brasil é reflexo de uma política de alto consumo que esgota os recursos não renováveis, causando desequilíbrios ambientais e problemas associados ao descarte inadequado de resíduos urbanos. Por isso, a busca por soluções adequadas para o tratamento e disposição final dos resíduos é alvo das políticas setoriais no Brasil e no mundo. Em Teresópolis, o Aterro Sanitário da Prata é o local de disposição final dos resíduos sólidos urbanos. Devido às condições precárias e ao mau funcionamento, o Aterro acaba sendo um lixão e, consequentemente, não corresponde à Política Nacional de Resíduos Sólidos, gerando impactos sociais e ambientais. A identificação dos custos socioambientais da gestão do aterro sanitário de Teresópolis e a busca de possíveis soluções para solucionar ou melhorar a situação sanitária atual foram identificadas com uma investigação exploratória e dados de levantamentos juntamente com pesquisa documental e visitas ao local.
- The impact of city form and active modes of transport on urban mobility energy consumptionPublication . Rodrigues, João Coutinho; Monteiro, João Pedro Medina; Sousa, Nuno; Jesus, Eduardo NatividadeThe transport sector is vital in any modern economy, but, during the past century, dependence on vehicles burning petroleum- based fuels has become a defining component of modern societies. Transport share of final global energy consumption is very important - for example, in the EU it accounts for about 32%. On the other hand, sustainable mobility issues, particularly urban mobility, are on the agenda, and it is even predicted that by 2050 there will be no cars running on conventional fuels in cities. The layout, or form of the city has a decisive impact on energy consumption in urban mobility and the modes of transport used. Active modes of transport, in particular, contribute to reduce transport energy requirements, making it important and timely to consider them in city planning. Estimations using computer models of cities implemented in a GIS environment allow the calculation and comparison of transport energy needs associated with different city forms and allow important conclusions to be drawn about the positive impact of adopting active modes of transport. This research presents test energy calculations carried out both for the current configuration of the city of Coimbra, Portugal, using real georeferenced data of buildings, facilities, jobs, transport infrastructure network, etc., and its redraft as other city forms (e.g., garden city, transit-oriented development city, compact city, 15-minutes city, etc.). Results allow conclusions to be drawn about the associated transport energy needs and modal share, and can provide valuable information to decision makers, infrastructure managers, and planners of more sustainable cities. In practice, the study reveals that in cities with planned urbanism, mobility requires significantly less energy.