97 research outputs found

    Machine learning based anomaly detection for industry 4.0 systems.

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    223 p.This thesis studies anomaly detection in industrial systems using technologies from the Fourth Industrial Revolution (4IR), such as the Internet of Things, Artificial Intelligence, 3D Printing, and Augmented Reality. The goal is to provide tools that can be used in real-world scenarios to detect system anomalies, intending to improve production and maintenance processes. The thesis investigates the applicability and implementation of 4IR technology architectures, AI-driven machine learning systems, and advanced visualization tools to support decision-making based on the detection of anomalies. The work covers a range of topics, including the conception of a 4IR system based on a generic architecture, the design of a data acquisition system for analysis and modelling, the creation of ensemble supervised and semi-supervised models for anomaly detection, the detection of anomalies through frequency analysis, and the visualization of associated data using Visual Analytics. The results show that the proposed methodology for integrating anomaly detection systems in new or existing industries is valid and that combining 4IR architectures, ensemble machine learning models, and Visual Analytics tools significantly enhances theanomaly detection processes for industrial systems. Furthermore, the thesis presents a guiding framework for data engineers and end-users

    FROM RECHARGE TO REEF: ASSESSING THE SOURCES, QUANTITY, AND TRANSPORT OF GROUNDWATER ON TUTUILA ISLAND, AMERICAN SAMOA

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    Ph.D.Ph.D. Thesis. University of Hawaiʻi at Mānoa 201

    Sustainable Solutions for Wearable Technologies:Mapping the Product Development Life Cycle

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    Wearable technologies involve the integration of technology into clothing or accessories to bring new functionalities for people on the move. Many examples of wearables are emerging, from simple fitness tracking watches to electronics deeply embedded into garments for multi-touch sensing and control for personal music players. Without careful development, wearables can have a negative impact on the environment due to increased production of electronic components, increased e-waste from abandoned devices, and increased energy usage. We examine environmental sustainability issues through a review of recent research and cases across three broad areas including the fashion industry, information and communications technology (ICT), and wearable technologies. In the analysis, we examine stages in the product life cycle and identify the unique issues for each sector, including the extraction of materials, production process, distribution of products, use, and disposal of products that have reached the end of their life. The findings are gathered as implications for design so that researchers, educators, designers, developers, and product managers will gain an overview of the issues related to environmental sustainability. Related examples of products and prototypes are provided to enable informed choices during the design and development of wearables that are more environmentally sustainable

    Coastal Environments

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    In recent years, coastal environments have drawn an increasing awareness globally, regionally, or locally as in many coastal regions, the rapid industrial, urban, and agricultural development has caused dramatic land use and land cover (LULC) changes and various water pollution events in coastal environments. These environmental consequences of human activities exacerbate the effects of regional and global climate change on the hydrological cycle between the land and ocean, and these effects are frequently hazardous or destructive to coastal regions around the world. Remote sensing and geographic information systems (GIS) technologies are thoroughly adopted and applied to monitor the dynamic change of coastal environments, such as coastal LULC, water quality, and marine ecosystem

    Toxic Cyanobacteria in Water

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    Sustainable Business, Management, and Economics

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    Frontiers in Sustainability (FinS) is an edited book series by MDPI. It serves as a transdisciplinary and multistakeholder platform for regional and global sustainability issues. Here, we understand transdisciplinarity as a collaboration between researchers from different disciplines to conceptualize, study, and derive solutions to sustainability-relevant problems that may be relevant to stakeholder practices and outcomes beyond academia. FinS promotes debates within and between academic disciplines, especially the natural sciences, engineering and technology, and the social sciences, and it seeks to publish academically relevant exchanges between academia, intergovernmental and non-governmental organizations, politics, and business. FinS also publishes manuscripts that do not fit the conventional journal format. Apart from theoretical or empirical papers on sustainability, contributions may include tentative policy or position papers, important research updates, opinion pieces, focused literature reviews, descriptions of relevant research or government programs, and other original and creative contributions relating to sustainability. All manuscripts are peer-reviewed. Those accepted for publication in FinS appear as a hardcopy, as well as online as open access articles. FinS is linked to the World Sustainability Forum. However, submissions from authors who did not present their work at one of the Forum events are also considered for publication

    Science-based restoration monitoring of coastal habitats, Volume Two: Tools for monitoring coastal habitats

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    Healthy coastal habitats are not only important ecologically; they also support healthy coastal communities and improve the quality of people’s lives. Despite their many benefits and values, coastal habitats have been systematically modified, degraded, and destroyed throughout the United States and its protectorates beginning with European colonization in the 1600’s (Dahl 1990). As a result, many coastal habitats around the United States are in desperate need of restoration. The monitoring of restoration projects, the focus of this document, is necessary to ensure that restoration efforts are successful, to further the science, and to increase the efficiency of future restoration efforts

    Water Quality in the West

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    Under the Western Water Policy Review Act of 1992 (P.L. 102-575, Title XXX), Congress directed the President to undertake a comprehensive review of Federal activities in the 19 Western States that directly or indirectly affect the allocation and use of water resources, whether surface or subsurface, and to submit a report of findings to the congressional committees having jurisdiction over Federal Water Programs
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