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CSPP 2020 Presidential Election Survey
No full textThe CSPP 2020 Presidential Election Survey was a three-wave panel study of political attitudes during the 2020 Presidential election. The survey interviewed a national sample of American adults. Major topics include COVID-19, sexism, and identity.Center for the Study of Political PsychologyCollege of Liberal Arts at the University of MinnesotaUniversity of Minnesota FoundationGoren, Paul; Borgida, Eugene; Vraga, Emily; Lavine, Howard; Wright, Ezekiel; Kim, Minyoung; Lunz Trujillo, Kristin; Madzelan, Molly; Bu, Wen; Crowley, Zack; Thomas, Penny; Barrett, Caitlyn. (2025). CSPP 2020 Presidential Election Survey. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/9xx6-ae95
Minutes: Liberal Education Subcommittee, March 5, 2025
No full textUniversity of Minnesota Duluth. Liberal Education Subcommittee. (2025). Minutes: Liberal Education Subcommittee, March 5, 2025. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/272760
Freedom Deferred: Structural Barriers to Black Men’s Rehabilitation and Racial Justice After Incarceration
No full textThis paper examines the incarceration and rehabilitation experiences of Black men in the United States, emphasizing how systemic racism and historical criminalization continue to shape modern carceral practices. Drawing on interdisciplinary sources, the paper traces the continuity of racialized punishment from the slavery era to today’s mass incarceration and post-release surveillance. The findings reveal that U.S. prisons often prioritize punitive control over meaningful rehabilitation, reinforcing cycles of trauma, exclusion, and recidivism. Despite the policy analysis, legislative action remains insufficient. This research calls for a shift toward policies rooted in racial equity and healing. Three key recommendations are offered: implement culturally competent, trauma-informed rehabilitation programming; enact Clean Slate and Ban-the-Box laws with automatic expungement; and abolish electronic monitoring as a standard condition of release. These reforms aim to challenge the structural conditions that dehumanize Black men and promote a justice system that supports restoration and reintegration.Paisley, Nataya Jenay. (2025). Freedom Deferred: Structural Barriers to Black Men’s Rehabilitation and Racial Justice After Incarceration. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/272539
Comparison of the Wavelength Dependence of Probe Compounds Used for the Quantification of Hydroxyl Radical Production from Sodium Nitrite
No full textFaculty Advisor: William ArnoldThe principal objective of this experiment is to determine which probe compound, pCBA, benzene, or methanol, should be used when measuring the production of hydroxyl radical from sodium nitrite at various wavelengths of light. This topic is being investigated as accurate quantification of hydroxyl radical at varying spatial-temporal and climatic conditions, as modeled by the varying wavelengths of light, is important for understanding biogeochemical processes and pollutant dynamics. Three probe compounds (pCBA, benzene, and methanol) were combined with sodium nitrite, a known hydroxyl radical sensitizer, and exposed to LED light at varying wavelengths (255, 275, 295, 308, and 365 nm). The quantum yields of hydroxyl radical were determined by normalizing hydroxyl radical production by light intensity and the light absorption of sodium nitrite at the different wavelengths. The best probe at each wavelength is that which is most selective for the hydroxyl radical, measured by the smallest quantum yield. It was found that methanol is the only probe compound that is suitable for all the wavelengths studied. It was also the most selective probe compound, consistently measuring the lowest quantum yields for hydroxyl radical production.This research was supported by the Undergraduate Research Opportunities Program (UROP).Jeske, Sarah. (2025). Comparison of the Wavelength Dependence of Probe Compounds Used for the Quantification of Hydroxyl Radical Production from Sodium Nitrite. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/271280
Susana Pelayo-Woodward (2025-04-16)
No full textApril 16th, 2025; 12:00 - 1:00 PM; Kathryn A. Martin Library, Fourth Floor RotundaSusana Pelayo-Woodward is the Director of the Office of Diversity & Inclusion and the Women's Resource and Action Center at the University of Minnesota Duluth. In this role, Susana supports the University's commitment to inclusivity, equity, and social justice. Beyond her formal title, Susana is an advocate, feminist, and ally. Join us for a discussion on the history and significant role of UMD's Multicultural Center and Office of Diversity & Inclusion, and how they work to foster an inclusive campus atmosphere where every student feels welcomed and supported.University Honors, University Honors Student Association, Kathryn A. Martin LibraryUniversity of Minnesota Duluth. University Honors. (2025). Susana Pelayo-Woodward (2025-04-16). Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/272232
Relationships between mental toughness, perceived stress and cortisol in novice marathoners
No full textUniversity of Minnesota M.S. thesis. May 2025. Major: Kinesiology. Advisor: Christopher Lundstrom. 1 computer file (PDF); iv, 122 pages.Marathon performance depends on physical and psychological preparation. Although mental toughness (MT) can facilitate endurance performance, its relationship with physiological stress and training behaviors during marathon training remains unclear. Thus, this study examined relationships between MT, stress, and performance in novice marathoners.Participants (N=28; 15F) provided saliva samples and completed the Mental Toughness Index (MTI) and Perceived Stress Scale (PSS) three times (baseline, midpoint, and morning of the marathon). Training behaviors (minutes running, days running) were recorded throughout training, and aerobic measures were assessed via 2-mile time trials and VO2max. Mental skills training (MST; e.g., positive self-talk, imagery, attentional focus) took place via online lectures and was practiced during group runs. Mixed models examined relationships between variables across time, while regression models assessed predictors of marathon performance and injury (i.e., injured, not injured) risk factors.
MT (p=.31) and PSS (p=.97) remained stable throughout training. Cortisol showed an inverted U-shaped pattern with a significant decrease from midpoint to marathon morning (p = .03). MT was significantly and negatively related to perceived stress (β=-.67, p=.001). Time running also positively correlated with MT across all time points (r = .46-.56, p =.025). There were no significant relationships that emerged between MT and aerobic fitness measures or perceived stress and marathon performance (p=.126). The MT-cortisol relationships displayed a pattern shift from negative at baseline and midpoint to positive at marathon morning, though none reached statistical significance. Neither MT nor cortisol significantly predicted injury.
Results indicate structured MST can be integrated into marathon training, with MT showing adaptive relationships with psychological and behavioral outcomes. Greater MT was associated with lower perceived life stress and more time training. While we cannot assume causality, it is plausible that developing MT through targeted MST may enhance training adherence and duration. These findings have practical implications for practitioners working with novice marathoners, indicating that incorporating structured MST alongside physical preparation could help optimize training engagement and psychological readiness.Leija, Antonio. (2025). Relationships between mental toughness, perceived stress and cortisol in novice marathoners. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/275828
Clay Bridge Formation in Porous Microchannels under Evaporation
No full textAll data are provided in TIF format. File names follow the structure clay type_clay concentration_channel pillar size_file content_number. For example, the file name Bentonite_1gL_BP_HP_2 indicates bentonite clay at a concentration of 1 g/L, a big pillar channel (BP), water evaporation on a hot plate (HP), and the second repetition of this condition. If the file corresponds to a time-lapse experiment, the label TL is included, and for small pillar channels the abbreviation SP is used. In the case of time-lapse experiments, all TIF files are provided inside a single zip archive. The dataset also includes specific cases, such as Bacterial accumulation on clay bridge.zip for bacterial accumulation experiments, and Bentonite_30gL_BP_100ppt NaCl_TL.zip for bentonite at 30 g/L with added salt (100 ppt NaCl) in a big pillar channel under time-lapse conditions. Shear rheology data for all tested clays and DI water are provided in the Shear Rheology Data folder as Excel files.This dataset captures the formation of clay bridges in porous microchannels containing two pillar sizes, large and small. Experiments were conducted using two clay types, bentonite and kaolinite, at four concentrations (1, 5, 30, and 60 g/L). For each condition, one time-dependent experiment documented the drying process with images captured at 10-minute intervals, enabling visualization of evaporation dynamics and bridge formation. Two additional replicates were performed under similar conditions on a hot plate, with final clay distribution images acquired using identical microscope settings.
The dataset also includes a salt-modified case, in which 100 ppt NaCl was added to a 30 g/L bentonite suspension prior to drying, to investigate the effect of salinity on bridge morphology. Additionally, one experiment visualizes the attachment of Pseudomonas aeruginosa to bentonite clay bridges, providing insight into microbial–mineral interactions.American Chemical Society: Petroleum Research FundPirdavari, Pooria; Yang, Judy Q. (2025). Clay Bridge Formation in Porous Microchannels under Evaporation. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/9CPE-JF90
Minutes: Senate Library Committee: February 11, 2025
No full textIn these minutes: Library Update; Update on Efforts and Initiatives Surrounding Diversity, Equity, Inclusion, and Accessibility; Technologies and Spaces to Promote Student and Community Engagement; Identify Possible Chairs for 2025-2026University of Minnesota. Senate Library Committee. (2025). Minutes: Senate Library Committee: February 11, 2025. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/273783
Data Repository for Coupled density and inertia effects on solute trapping at fracture intersections: multiscale experiments and pore-scale simulations
No full textThis dataset contains ImageJ macros for image sequence processing, MATLAB scripts for light intensity–concentration calibration, and OpenFOAM case files supporting the experiments and simulations described in the manuscript. The ImageJ macros enable cropping and noise removal of raw image stacks. The MATLAB scripts extract image frames at specified PVI, reproduce the calibration process, and generate depth-averaged concentration profiles using the calibration curve. Preprocessed data are also provided. The OpenFOAM directories include all solver files, meshes, and setup files to simulate coupled density–inertia effects at fracture intersections with the ScalarBoussinesqPimpleFoam solver. Output can be visualized in ParaView or other .vtk-compatible software.Density-driven flow and fluid inertia jointly influence solute transport in fracture networks, with broad implications for hydrogeological and subsurface engineering systems. While their individual effects are well recognized, their combined impact remains underexplored. This study integrates pore-to-network-scale visualization experiments and numerical simulations to investigate the effects of their interplay on solute transport at fracture intersections. At the network scale, 3D flume experiments revealed localized tracer trapping near intersections, driven by density-induced convection and inertia-induced vortices. At the intersection scale, millifluidic experiments and pore-scale simulations elucidated how density contrast, flow imbalance, and fluid inertia govern such solute trapping. Maximum trapping occurs when bottom fracture flow rate is 10% higher, which maximizes mass entry and limits loss. This imbalance promotes vortex retention and prolonged solute residence, producing breakthrough curve tailing. Simulations in rough-walled fractures confirmed these dynamics. The results underscore the critical role of pore-scale processes in governing network-scale transport.National Science Foundation under Grant Nos. EAR-2100493 and CBET-2053413, and American Chemical Society Petroleum Research Fund.Dechdacho, Porraket; Cao, Hongfan; Lee, Sungyon; Kang, Peter K. (2025). Data Repository for Coupled density and inertia effects on solute trapping at fracture intersections: multiscale experiments and pore-scale simulations. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/k7a6-bh02
Minutes: Senate Library Committee: April 15, 2025
No full textIn these minutes: Library Update; Discussion of the Library Website and Search FunctionsUniversity of Minnesota. Senate Library Committee. (2025). Minutes: Senate Library Committee: April 15, 2025. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/273678