46954 research outputs found
Sort by
“Blackjack” Pershing’s Punitive Expedition
Get PDFIn 1916, General Pershing led a force of American troops into Mexico in response to a raid on Columbus, New Mexico. While unsuccessful in achieving the primary mission, the expedition produced advancements in military transportation and aviation and provided valuable experiences to the next generation of generals which were central to America\u27s success in World War I
KUA1 and ILR3 Interact in _Arabidopsis thaliana_ to Mediate Plant Development
No full textPlant development relies on cell proliferation, elongation, and differentiation to grow into a mature plant that is capable of competing for and procuring resources (Zluhan-Martínez et al., 2021). Plant hormones (phytohormones) including auxin (indole-3-acetic acid/IAA) regulate development and are tightly controlled by many proteins (Asami & Nakagawa, 2018; Claeys et al., 2014; Woodward & Bartel, 2005). One protein, IAA-Leucine Resistant3 (ILR3), is important in regulating IAA response within A. thaliana and represses the expression for different CCC1-like metal transporters (Rampey et al., 2006). By controlling metal transporters ILR3 is able to alter the metal microenvironment and indirectly effect the function of amidohydrolases, key enzymes in the conversion of storage forms of auxin (IAA-conjugates) and free auxin (Rampey et al., 2006). ILR3 is a bHLH-LZ TF and requires hetero- or homodimerization to function. A Yeast-2-Hybrid (Y2H) screen was used to identify possible dimerization partners of ILR3. One interactor identified, KUA1 (At5g47390), was further characterized through a series of directed screens and spotting assays. KUA1 was found to interact with ILR3 but was unable to interact with ilr3-1, supporting the necessity of the c-terminal region of ILR3 for dimerization. KUA1 has also been seen to address ROS homeostasis through regulating peroxidase expression and plants overexpressing KUA1 accumulate IAA (Lu et al., 2014; Kwon et al., 2013). Analysis of KUA1 interactions with ILR3 support KUA1 in playing a role in Fe and ROS levels in development, contributing to the phenotypic results seen in the gain-of-function ilr3-1 mutant (Kwon et al., 2013; Rampey et al., 2006). Furthermore, these results suggest ILR3 and KUA1 could be working in concert by managing Fe and ROS levels, resulting in altered IAA response and thereby plant development. KUA1 was also observed to interact with other bHLH proteins, suggesting a broader role of KUA1 in other plant processes. This study also identified two other proteins, ASIL1 and AR791, that were seen to interact with ILR3 and KUA1 and suggests the possibility of a protein complex in the regulation of free auxin in plant development
Development Under Erasure: Deconstruction in Development Discourse
Get PDFJacques Derrida’s theory of deconstruction has been historically underappreciated in development. Yet Derrida’s critical theory realizes development as an inherently deconstructive field, one which advocates for the Other when disciplines such as economics and international relations overlook them. By examining the history of development through a Derridean lens, we can see how deconstruction was working within some of the development discourse’s prominent shifts leading up to its “impasse” in the 1980s. Heightened critical attention around this time catalyzed a flurry of deconstructive processes in the following years which have reshaped the landscape of development scholarship and practice. The story of the “impasse” itself will serve as a hinge for the essay. After a deconstructive examination of development before and then during the impasse, the essay will consider the deconstructive dynamics that are driving and enlivening five of the (partially) distinguishable post-impasse movements in development. While none of these are perfect or completed, they are structural manifestations of the deconstruction at play in development, and they are moving the field into a closer relationship with its impossible yet necessary goal: to pursue justice for the marginalized. The last of these movements to be analyzed, the “theological turn” in development, undergirds the rest and provides the clearest picture of how deconstruction can help us think constructively about development’s future
A Geographical Lens on Rural Teacher Induction and Retention
Get PDFInduction is a critical phase for early career teachers (ECTs) because it is where they develop their sense of professional identity and often decide whether or not to stay in the profession. Substantial research has reported high rates of rural teacher retention during induction (e.g., Ingersoll & Strong, 2011), but few researchers have examined this pattern through a geographical lens. Rural education theorists Gruenewald (2003) and Reid et al. (2010) suggest that a geographical lens is a useful way to understand the complexities of place and space—particularly rural space. Rooted in their theories, the present study aimed to address the aforementioned research gap by asking, “What does existing literature say about the impact of rural geography on the experiences of teacher induction and retention among early or mid-career teachers?” Using a secondary analysis of primary research, the study found that the two factors with the most frequent impact on induction were small administrative networks and physical distance from amenity-dense areas, while the most significant factor impacting ECTs’ desire to stay was if they were from the community. This dynamic is due to the influence of ECT background on administrative support, community acceptance, and community familiarity. The significant influence of ECT background suggests that the most impactful aspect of rural geography is not inherent to the natural environment, but rather socially constructed by those within the rural spaces. Implications of such findings for induction programming and further research are discussed
Erik Tryggestad
No full texthttps://scholarworks.harding.edu/lectureship-presenters/1440/thumbnail.jp
