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- Summer 2023 Honors College Theses are now publicly available in the repository.
- Arizona Journal of International & Comparative Law, Volume 40 Issue 1 (2023) is now publicly available in the repository.
- The Final Report: The Presidential Advisory Commission on the Future of Agriculture & Food Production in a Drying Climate has been released in the repository. See also: Press release.
- Covenants, Conditions and Restrictions (CCRs) collected from the Pima County Recorders Office by The Mapping Racist Covenants Project are now publicly available in the repository.
- Spring 2023 Honors College Theses are now publicly available in the repository.
- Summer 2023 MS-GIST Reports are now publicly available in the repository.
- you are here: the journal of creative geography is now available in the repository.
- Coyote Papers Volume 25 (2023) is now available in the repository.
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A field–particle correlation analysis of a perpendicular magnetized collisionless shockUsing the field-particle correlation technique, we examine the particle energization in a three-dimensional (one spatial dimension and two velocity dimensions; 1D-2V) continuum Vlasov-Maxwell simulation of a perpendicular magnetized collisionless shock. The combination of the field-particle correlation technique with the high-fidelity representation of the particle distribution function provided by a direct discretization of the Vlasov equation allows us to ascertain the details of the exchange of energy between the electromagnetic fields and the particles in phase space. We identify the velocity-space signatures of shock-drift acceleration of the ions and adiabatic heating of the electrons arising from the perpendicular collisionless shock by constructing a simplified model with the minimum ingredients necessary to produce the observed energization signatures in the self-consistent Vlasov-Maxwell simulation. We are thus able to completely characterize the energy transfer in the perpendicular collisionless shock considered here and provide predictions for the application of the field-particle correlation technique to spacecraft measurements of collisionless shocks.
Episodic Late Cretaceous to Neogene crustal thickness variation in southern TibetRecent advancements in quantitatively estimating the thickness of Earth's crust in the geologic past provide an opportunity to test hypotheses explaining the tectonic evolution of southern Tibet. Outstanding debate on southern Tibet's Cenozoic geological evolution is complicated by poorly understood Mesozoic tectonics. We present new U-Pb geochronology and trace element chemistry of detrital zircon from modern rivers draining the Gangdese Mountains in southern Tibet. Results are similar to recently published quantitative estimates of crustal thickness derived from intermediate-composition whole rock records and show ~30 km of crustal thinning from 90 to 70 Ma followed by thickening to near-modern values from 70 to 40 Ma. These results extend evidence of Late Cretaceous north–south extension along strike to the west by ~200 km, and support a tectonic model in which an east–west striking back-arc basin formed along Eurasia's southern margin during slab rollback, prior to terminal collision of India with Eurasia.
Overcoming Technology Barriers for StudentsThis paper describes efforts at the University of Arizona Libraries (UAL) in Tucson to improve access to the Internet and technology during the COVID-19 pandemic and as the libraries continue to adapt to hybrid instructional modalities. The authors highlight how their institution leveraged campus data and new partnerships to better meet students’ basic technology needs, particularly for first-generation and underrepresented students. While much of this content was previously presented at the 2022 Library Assessment Conference,1 there have been several updates, and more operational information is shared in this article. UAL analyzed anonymized student demographic data, including race and ethnicity, first-generation student status, and Pell grant recipients, to determine how service utilization aligned with the campus population. The libraries established new campus partnerships and are evaluating and refining their approach. This foundational work provided new ideas for ways to reach more students in need and to form additional partnerships with groups on campus.
From study plans to capacity building: a journey towards health equity in cancer survivorshipThis article highlights the importance of pausing and reflecting on one's motivation, capacity, and positionality when engaging in health equity research and encourages researchers to engage in critical self-reflection and contribute to the ongoing dialogue on the ethical conduct of health equity-focused cancer research. In response to the urgent need to address health disparities and improve health equity in cancer survivorship care, the Cancer Prevention and Control Research Network (CPCRN) Survivorship workgroup discussed developing a study focused on understanding how racism impacts patient engagement in cancer survivorship care. However, during the study's development, the workgroup recognized limitations in research team composition and infrastructure. The workgroup engaged in critical self-reflections, individually and collectively, leading to the halting of the research study. Consequently, they redirected their efforts towards strengthening the necessary infrastructure for conducting such research, including diverse investigator representation and equitable partnerships with cancer survivors. The description of this process, along with suggestions for reflection, may be helpful and informative to other researchers and research networks seeking to center marginalized voices and work in partnership to address healthcare and health equity.
Non-target Effects of Insecticides in CottonHandout reviewing 2023 cotton season trials, including a discussion on historical trends in insect control, Plinazolin and Sefina usage in Arizona cotton, ThryvOn cotton research, and early season insect control options. Handout was provided during the field tour during the 13th Annual Central Arizona Farmer Field Day held on November 15, 2023.