7,660 research outputs found

    UMSL Bulletin 2023-2024

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    The 2023-2024 Bulletin and Course Catalog for the University of Missouri St. Louis.https://irl.umsl.edu/bulletin/1088/thumbnail.jp

    Graduate Catalog of Studies, 2023-2024

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    Proceedings of the 10th International congress on architectural technology (ICAT 2024): architectural technology transformation.

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    The profession of architectural technology is influential in the transformation of the built environment regionally, nationally, and internationally. The congress provides a platform for industry, educators, researchers, and the next generation of built environment students and professionals to showcase where their influence is transforming the built environment through novel ideas, businesses, leadership, innovation, digital transformation, research and development, and sustainable forward-thinking technological and construction assembly design

    Temperature Reduction Technologies Meet Asphalt Pavement: Green and Sustainability

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    This Special Issue, "Temperature Reduction Technologies Meet Asphalt Pavement: Green and Sustainability", covers various subjects related to advanced temperature reduction technologies in bituminous materials. It can help civil engineers and material scientists better identify underlying views for sustainable pavement constructions

    Framework for the design and operations of sustainable on-orbit servicing infrastructures dedicated to geosynchronous satellites

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    After being a concept for decades, the on-orbit servicing industry is finally taking off, with national space agencies and private organizations developing and planning soon-to-be-launched space infrastructures that will revolutionize the way humans operate in space. The advent of this new industry comes at a time when the geosynchronous orbit (GEO) satellite industry faces various pressures whether it be because of ageing fleets or increased competition from nimbler Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) constellations. A new symbiotic relationship is emerging between early OOS players who seek customers and the GEO satellite operators who aim to revive the competitiveness of their fleets. The first OOS infrastructures will be simple ones, involving a few servicers offering a narrow set of services. These servicers will provide services to a few satellites before running out of propellant and getting discarded in a graveyard orbit or into the atmosphere. However, as technology matures and demand for on-orbit services increases, OOS infrastructures will become more versatile and involve additional elements, such as orbital depots, to enable the sustainable operations of a wide variety of servicers. Thus, planning OOS missions will involve not only finding the best route for every single servicer but also optimizing the in-space supply chain of commodities needed to support the long-term operations of the servicers and their client satellites. This dissertation presents an OOS planning framework that simultaneously computes the optimal route of the servicers and plans the in-space supply chain of the supporting commodities. The second chapter gives the background of OOS in GEO and the literature review for OOS planning relevant to the work presented in this thesis. The third chapter presents the mission scenario investigated in this work. The fourth chapter generalizes the Time-Expanded Generalized Multi Commodity Network Flow (TE-GMCNF) model used in recent state-of-the-art space logistics studies to accurately model the operations of the servicers across a network of customer satellites and orbital depots. The Rolling Horizon (RH) approach is adapted to the OOS context to properly model uncertain service demand arising from customer satellites. The fifth chapter generalizes the mathematical formulation at the core of the framework developed in chapter 4 to model all kinds of user-defined trajectories and servicer propulsion technologies, such as high-thrust, low-thrust, and/or multimodal servicers. (Multimodal servicers are defined to be equipped with both high-thrust and low-thrust engines.) An assumption inherent to chapter 4 and chapter 5 is that the nodes of the networks are all co-located along the same orbit. Chapter 6 relaxes this assumption by extending the framework developed in chapter 4 through the computation of the relative dynamics of network nodes distributed across orbits of various shapes and orientations. Thus, chapter 6, unlike chapter 4 and chapter 5, optimizes the operations of OOS infrastructures over a network with time-varying arc costs.Ph.D

    Bayesian Forecasting in Economics and Finance: A Modern Review

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    The Bayesian statistical paradigm provides a principled and coherent approach to probabilistic forecasting. Uncertainty about all unknowns that characterize any forecasting problem -- model, parameters, latent states -- is able to be quantified explicitly, and factored into the forecast distribution via the process of integration or averaging. Allied with the elegance of the method, Bayesian forecasting is now underpinned by the burgeoning field of Bayesian computation, which enables Bayesian forecasts to be produced for virtually any problem, no matter how large, or complex. The current state of play in Bayesian forecasting in economics and finance is the subject of this review. The aim is to provide the reader with an overview of modern approaches to the field, set in some historical context; and with sufficient computational detail given to assist the reader with implementation.Comment: The paper is now published online at: https://doi.org/10.1016/j.ijforecast.2023.05.00

    Southern Adventist University Undergraduate Catalog 2022-2023

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    Southern Adventist University\u27s undergraduate catalog for the academic year 2022-2023.https://knowledge.e.southern.edu/undergrad_catalog/1121/thumbnail.jp

    Integration of BIM in Building Sustainability Assessment methods

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    Tese de doutoramento em Sustentabilidade do Ambiente ConstruídoThe Architecture, Engineering and Construction (AEC) industry is highly responsible for several environmental impacts and worldwide authorities and societies are increasingly looking for more sustainable buildings. Given the ambitious targets of climate neutrality and decarbonisation, there is an urgent need to develop specific strategies to act in the building sector, as it has been recognised as a key industry to reverse environmental impacts. Among the existing tools, Building Sustainability Assessment (BSA) methods stand out as a pathway to evaluate and promote the integration of sustainability principles in buildings. However, such methods often require multi-disciplinary information about the building and significant resources such as time, money, and human labour. Consequently, and in the absence of mandatory legislation, BSA is usually neglected or applied in project later stages just to provide a sustainable evaluation of the building. With the deployment of Building Information Modelling (BIM), the opportunity for BSA to adopt and benefit from BIM functionalities arises. Currently, BIM has not been used comprehensively in the evaluation process of BSA but the potential for process automation and simplification are well known. To effectively integrate BSA into BIM environment, this research aims to develop a BIM integration framework for the Portuguese residential BSA method SBToolPT-H. Moreover, such framework will be materialized by the creation of an enduser BIM-based application – SBToolBIM – which will act as a decision support tool regarding building sustainability for the project's early stages. SBToolBIM will automate and accelerate the assessment of SBToolPTH by reflecting its criteria through computable rules. Results show the attractiveness of SBToolBIM, as well as the possibility to have real-time feedback about the building sustainability level in early project stages, allowing for the introduction and comparison of different sustainability measures with few resources. SBToolBIM has established a novel and common approach which can be used as a systematic framework to apply BIM in other BSA schemes, representing a pathway to reduce the building sector impacts and provide valuable contributes to reach worldwide climate neutrality and decarbonisation targets.A indústria da Arquitetura, Engenharia e Construção (AEC) é responsável por diversos impactes ambientais, levando as autoridades e sociedades mundiais à procura por edifícios mais sustentáveis. Perante os ambiciosos objetivos da neutralidade climática e descarbonização, surge a necessidade de desenvolver estratégias específicas para o setor dos edifícios, dado ser uma indústria chave para a reversão dos referidos impactes. Entre as ferramentas existentes, destacam-se os métodos da avaliação da sustentabilidade de edifícios (BSA, do inglês Building Sustainability Assessment) como forma de avaliar e promover a integração de medidas sustentáveis. No entanto, a sua utilização requer informações multidisciplinares do edifício, bem como recursos significativos, tais como tempo, custos e mão de obra. Consequentemente e na ausência de legislação obrigatória, os BSA são geralmente negligenciados ou aplicados em fases finais de projeto, apenas para identificar o nível de sustentabilidade do edifício. Com a implementação do Building Information Modeling (BIM), surge a oportunidade dos BSA adotarem e beneficiarem das suas funcionalidades. Atualmente, o BIM ainda não é integralmente utilizado no processo de avaliação dos BSA, mas as suas potencialidades para automação e simplificação do processo já foram reconhecidas. De modo a integrar os BSA em ambiente BIM, este trabalho visa desenvolver uma estrutura de integração BIM para o método BSA residencial português SBToolPT-H. A estrutura será materializada através da criação de uma aplicação BIM – SBToolBIM – que irá atuar como uma ferramenta de apoio à decisão em fases iniciais de projeto. O SBToolBIM irá automatizar e acelerar os processos de avaliação da sustentabilidade através do SBToolPT-H, refletindo os seus critérios através de regras computacionais. Os resultados demonstram a utilidade do SBToolBIM, bem como a possibilidade de fornecer feedback em tempo real sobre o nível de sustentabilidade do edifício nas fases iniciais de projeto, permitindo a introdução e a comparação de diferentes medidas de sustentabilidade, utilizando poucos recursos. O SBToolBIM estabelece uma nova abordagem sistemática para aplicação do BIM noutros métodos BSA, representando um caminho para a redução dos impactes do setor e dando valiosas contribuições para alcançar as metas de neutralidade climática e descarbonização.SBToolBIM research was funded by the Portuguese Foundation for Science and Technology (FCT), grant number SFRH/BD/145735/2019
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