152 research outputs found

    Negotiating Networked Learning Relationships with Augmentation Technologies: Smart Education, Data Analytics, and Human-autonomy Teaming

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    The hosts of this round table discussion, members of the Building Digital Literacy (BDL) research cluster of the Digital Life Institute (www.digitallife.org), adopt a critical disposition (NLEC, 2021a, 2021b) toward emerging augmentation technologies that sit at the core of networked learning. Augmentation technologies, such as wearable devices that extend human senses, augment creative abilities, or overcome physical limitations (Pederson & Hill, 2021), represent the engine that drives the next generation of networked learning. As emerging augmentation technologies, use of data analytics, and “smart” technologies proliferate, we see the critical need for research, presentation, and discussion of the implications for networked learning. This round table invites conversation about the role of artificial intelligence, big data, and learning analytics in networked learning

    Widespread glacial erosion on the Scandinavian passive margin

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    The topography in Scandinavia features enigmatic high-elevation low-relief plateau regions dissected by deep valleys and fjords. These plateau regions have long been interpreted as relict landforms of a preglacial origin, whereas recent studies suggest they have been modified significantly by glacial and periglacial denudation. We used late Pliocene–Quaternary source-to-sink analyses to untangle this scientific conundrum. We compared glacier-derived offshore sediment volumes with estimates of erosion in onshore valleys and fjords and on the inner shelf. Our results suggest that onshore valley and fjord erosion falls 61%–66% short of the offshore sink volume. Erosion on the inner shelf cannot accommodate this mismatch, implying that the entire Scandinavian landscape and adjacent shelf have experienced significant glacial erosion.publishedVersio

    Three-dimensional Ultrasound Volume Measurements in an Aortic Aneurysm Model

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    Measuring the aneurysm sac’s size is vital in postoperative surveillance following endovascular treatment of aortic aneurysms.  A three-dimensional ultrasound technique may enable accurate volume measurements.  However, there is no validation of any commercially   available electro-mechanical 3D ultrasound equipment or of the software used when measuring the volume of the aortic aneurysm sac. This investigation used a phantom model to study a three-dimensional ultrasound technique on aortic aneurysm sac volume measurements.  High volume measurement accuracy indicates that this method may be useful for postoperative surveillance following endovascular aortic aneurysm operations.  These results must be confirmed in clinical studies

    On Planning of FTTH Access Networks with and without Redundancy

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    Abstract. This paper presents a planning analysis of FTTH access network with and without redundancy. Traditionally, access networks are planned only without redundancy, which is mainly due to lowering the cost of deployment. As fiber optics provide a huge amount of capacity, more and more services are being offered on a single fiber connection. Therefore, as a single point of failure in fiber connection can cause multiple service deprivation, redundancy is very crucial. In this work, an automated planning model was used to test different scenarios of implementation. Cost estimation is presented in terms of digging and amount of fiber used. Three topologies, including the traditional one "tree topology", were tested with a combination of various passive optical technologies
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