54 research outputs found

    A survey of the application of soft computing to investment and financial trading

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    Enabling the Development and Implementation of Digital Twins : Proceedings of the 20th International Conference on Construction Applications of Virtual Reality

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    Welcome to the 20th International Conference on Construction Applications of Virtual Reality (CONVR 2020). This year we are meeting on-line due to the current Coronavirus pandemic. The overarching theme for CONVR2020 is "Enabling the development and implementation of Digital Twins". CONVR is one of the world-leading conferences in the areas of virtual reality, augmented reality and building information modelling. Each year, more than 100 participants from all around the globe meet to discuss and exchange the latest developments and applications of virtual technologies in the architectural, engineering, construction and operation industry (AECO). The conference is also known for having a unique blend of participants from both academia and industry. This year, with all the difficulties of replicating a real face to face meetings, we are carefully planning the conference to ensure that all participants have a perfect experience. We have a group of leading keynote speakers from industry and academia who are covering up to date hot topics and are enthusiastic and keen to share their knowledge with you. CONVR participants are very loyal to the conference and have attended most of the editions over the last eighteen editions. This year we are welcoming numerous first timers and we aim to help them make the most of the conference by introducing them to other participants

    Virtual Models Linked with Physical Components in Construction

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    Aplicação de controladores Fuzzy para o equilíbrio frontal de um veículo de duas rodas

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    O objetivo deste trabalho de conclusão de curso é implementar três diferentes controladores para manter o equilíbrio frontal de um veículo de duas rodas, bem como analisar e confrontar os resultados de cada um deles. Para tal, foi construído um protótipo do veículo em estudo, com unidade de medida inercial (composta por acelerômetros e giroscópios), driver para controle dos motores, bateria para alimentação do veículo, motores DC, placa de desenvolvimento com microcontrolador ATMega 328p e toda a estrutura mecânica necessária. O método de identificação do modelo da planta em estudo foi o de distúrbio em malha fechada, haja vista a instabilidade deste tipo de sistema em malha aberta. Os resultados dos controladores fuzzy mostraram que um aumento no número de regras e faixas para cada variável da lógica refletiu em um melhor desempenho deste tipo controlador para a planta em estudo, no que se refere ao tempo de acomodação, overshoot e erro em regime. Quanto ao controlador Neurofuzzy, pôde-se comprovar uma eficácia no treinamento de sua rede, tanto com dados do PID, quanto com dados do controlador Fuzzy. Além disso, o controlador inteligente demonstrou excelentes resultados na estabilização do veículo.The purpose of this study is to implement three different controllers to maintain the front balance of a two-wheeled vehicle, as well as analyze and compare their results. With this aim, a prototype vehicle was built, with an inertial measurement unit (composed by accelerometers and gyroscopes), driver for motor control, battery for power supply of the vehicle, DC motors, development board with the ATMega 328p microcontroller and all mechanical structure. The method of identification of the model of the plant under study was the closed-loop disturbance, due to the instability of this type system in open-loop. Fuzzy controllers’ results showed that an increase in the number of rules and ranges for each logical variable reflected a better closedloop performance in terms of settling time, overshoot and tracking error. It was proved an efficiency in the training of the Neurofuzzy controller’s network, with both PID’s data and Fuzzy controller’s ones. In addition, the intelligent controller has demonstrated excellent results in stabilizing the vehicle

    The 45th Australasian Universities Building Education Association Conference: Global Challenges in a Disrupted World: Smart, Sustainable and Resilient Approaches in the Built Environment, Conference Proceedings, 23 - 25 November 2022, Western Sydney University, Kingswood Campus, Sydney, Australia

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    This is the proceedings of the 45th Australasian Universities Building Education Association (AUBEA) conference which will be hosted by Western Sydney University in November 2022. The conference is organised by the School of Engineering, Design, and Built Environment in collaboration with the Centre for Smart Modern Construction, Western Sydney University. This year’s conference theme is “Global Challenges in a Disrupted World: Smart, Sustainable and Resilient Approaches in the Built Environment”, and expects to publish over a hundred double-blind peer review papers under the proceedings

    Measuring knowledge sharing processes through social network analysis within construction organisations

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    The construction industry is a knowledge intensive and information dependent industry. Organisations risk losing valuable knowledge, when the employees leave them. Therefore, construction organisations need to nurture opportunities to disseminate knowledge through strengthening knowledge-sharing networks. This study aimed at evaluating the formal and informal knowledge sharing methods in social networks within Australian construction organisations and identifying how knowledge sharing could be improved. Data were collected from two estimating teams in two case studies. The collected data through semi-structured interviews were analysed using UCINET, a Social Network Analysis (SNA) tool, and SNA measures. The findings revealed that one case study consisted of influencers, while the other demonstrated an optimal knowledge sharing structure in both formal and informal knowledge sharing methods. Social networks could vary based on the organisation as well as the individuals’ behaviour. Identifying networks with specific issues and taking steps to strengthen networks will enable to achieve optimum knowledge sharing processes. This research offers knowledge sharing good practices for construction organisations to optimise their knowledge sharing processes

    Proceedings of 31st Annual ARCOM Conference, vol 2

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