11,787 research outputs found

    NEW EXPRESSIONS FOR THE COLLECTIVE EXCITATION-SPECTRA IN EVEN-EVEN NUCLEI

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    Physics, MultidisciplinarySCI(E)39ARTICLE151-74

    A metric for rooted trees with unlabeled vertices based on nested parentheses

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    [[abstract]]In this paper, we propose a new metric for rooted trees with unlabeled vertices based on alignments of nested parenthesis strings. We prove that the time complexity for computing this metric is NP-hard and present a 1.5-approximation algorithm for it. (C) 2010 Elsevier B.V. All rights reserved.[[note]]SC

    PiLa-CS Professional Learning Community - Workshop 2 Resources

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    During the Summer of 2021 and 2022, the Participating in Literacies and Computer Science (PiLa-CS) Research Practice Partnership convened and supported a community of practice to learn more about how to enable better CS teaching for emergent bilinguals. These are materials from Workshop 2 of the PLC.Sponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
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