Critical urban events take places at a random way and they need to be dealt with by public authorities quickly to maintain the proper operation of cities. The main challenges for an efficient handling fall in the random nature of the event, and in the speed and accuracy of its notification to the authority. The pervasiveness of vehicles in the cities, and their communication and monitoring capabilities, allow VANETs to support the dissemination and handling of such events. Thus, this work proposes MINUET, a dynamic system to support the monitoring and dissemination of urban events, which operates in a VANET. It uses a cooperative-based strategy where vehicles dynamically coordinate the monitoring and dissemination of events in real time by the means of clusters. A performance comparative analysis in NS3 with a target tracking approach shows the efficiency of MINUET regarding the real-time monitoring, the dissemination of urban event data and data availability at the destination in dense and sparse networks.

Eventos urbanos emergenciais ocorrem de forma aleatória e precisam ser tratados por entidades competentes para manter o bom funcionamento das cidades. Os principais desafios para um tratamento eficiente recaem justamente na aleatoriedade no tempo ou no espaço, e na rapidez e acurácia da comunicação da ocorrência do evento à uma entidade responsável, sendo este último desafio agravado pelo fato desta comunicação depender de intervenção humana. A onipresença de veículos em ambientes urbanos, sua capacidade de comunicação e monitoramento, possibilitam o uso de VANETs como meio de auxílio para disseminação e tratamento destes eventos. Assim, este artigo propõe MINUET, um sistema de monitoramento e disseminação de eventos urbanos, que atua em uma rede veicular não estruturada. Ele é baseado em uma estratégia cooperativa, onde veículos coordenam dinamicamente o monitoramento e a disseminação de múltiplos eventos em tempo real através de agrupamentos. Resultados no NS3 mostram o desempenho do MINUET na detecção, monitoramento e disseminação em tempo real de eventos em zonas urbanas.

Tooling is a primary target for current additive manufacturing (AM), or 3D printing, technology because of its rapid prototyping capabilities. Molds of many sizes and shapes have been produced for a variety of industries. However, large tooling remained out of reach until the development of large-scale composite AM manufacturing processes like the Big Area Additive Manufacturing (BAAM) system. The Department of Energy’s Oak Ridge National Laboratory (ORNL) worked with TPI Composites to use the BAAM system to fabricate a wind turbine blade mold. The fabricated wind turbine blade mold was produced in 16 additively manufactured sections, was 13 meters long, had heating channels integrated into the design, and was mounted into a steel frame post fabrication. This research effort serves as a case study to examine the technological impacts of AM on wind turbine blade tooling and evaluate the efficacy of this approach in utility scale wind turbine manufacturing.