Dj david knapp biography definition

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    Retired

    Professor Emeritus - Ph.D., University of California at Berkeley

    Interests

    Cultural Geography; Environmental Resource Management; Landscape Ecology and Biogeography

     

    Biography

    Robin Doughty attended colleges in Italy, England, and the United States. He received a doctorate in Geography from the University of California at Berkeley, and has been a faculty member in the Department of Geography and the Environment at the University of Texas since

    Robin has published ten books and scores of articles on a range of environmentally-related topics, including the nineteenth century feather trade; the recovery of the endangered whooping crane that state nests only in North America; the mockingbird as the State bird, and the armadillo, a relatively newcomer for the US South. 

    Robin has written about man-induced changes in landscapes from the US to Australia, and has recently turned his attention to the oceans. In , Robin authored his tenth book.  Published bygd t

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    Soundtrap usage during COVID A machine-learning approach to assess the effects of the pandemic on online music learning

    Abstract

    The COVID pandemic prompted a sudden rethinking of how music was taught and learned. Prior to the pandemic, the web-based digital audio workstation Soundtrap emerged as a leading platform for creating music online. The present study examined the growth of Soundtrap’s usage during the COVID pandemic. Using machine-learning methods, we analyzed anonymized user uppgifter from Soundtrap’s million educational users in the United States to see if the pandemic affected Soundtrap’s education user base and, if so, to what extent. An exploratory data analysis demonstrated a large increase in Soundtrap’s user base beyond five standard deviations beginning in March A subsequent changepoint analysis identified March 17, , as the day this shift occurred. Finally, we created a SARIMAX model using data prior to March 17 to forecast expected growth. This model was unable to a

  • dj david knapp biography definition

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    Abstract

    Chronic low‐grade inflammation, particularly elevated tumor necrosis factor (TNF) levels, occurs due to advanced age and is associated with greater susceptibility to infection. One reason for this is age‐dependent macrophage dysfunction (ADMD). Herein, we use the adoptive transfer of alveolar macrophages (AM) from aged mice into the airway of young mice to show that inherent age‐related defects in AM were sufficient to increase the susceptibility to Streptococcus pneumoniae, a Gram‐positive bacterium and the leading cause of community‐acquired pneumonia. MAPK phosphorylation arrays using AM lysates from young and aged wild‐type (WT) and TNF knockout (KO) mice revealed multilevel TNF‐mediated suppression of kinase activity in aged mice. RNAseq analyses of AM validated the suppression of MAPK signaling as a consequence of TNF during aging. Two regulatory phosphatases that suppress MAPK signaling, Dusp1 and Ptprs, were confirmed to be upregulated with age and as a resul