Institutional Repository

The UDSpace Institutional Repository collects and disseminates research material from the University of Delaware.

Faculty, staff, and graduate students who want their research material hosted in UDSpace should contact the University of Delaware Insitutional Repository team at openaccess@udel.edu.
Faculty may use UDSpace to fulfill the University of Delaware Faculty Senate Open Access Resolution, and in many cases may use it to fulfill open access requirements from grant funding agencies.
Departments can use UDSpace to publish or distribute their working papers, technical reports, or other research material.
UDSpace also includes all doctoral dissertations from winter 2014 forward, and all master's theses from fall 2009 forward.

To learn more about UDSpace, and how you can make your research openly accessible to the public, visit our UDSpace Information website.

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Recent Submissions

Understanding Stigma and Stress Among Immigrant Communities: Introduction to the Special Issue
(Translational Issues in Psychological Science, 2026-06-15) Guan, Shu-Sha Angie; Zhou, Jingwen; Williams, LeNisha; Cabrera, Jennifer; Spiker, Rand
After over 50 years of rapid growth, the immigrant population in the United States began to decline in June 2025. Divisive policies that have affected the U.S. immigrant and refugee population have also been a major source of stress for a majority of Americans. The articles in this special issue examine how current events have shaped stigma and stress within immigrant communities. Importantly, they also identify sources of strength and resilience. Collectively, these articles provide evidence for culturally rooted practices and policies that support the over 50 million immigrants living in the United States as well as their children, families, and global counterparts.
2026, 27th Issue, part 2
(Newark, Del.: Chesapeake Pub. Corp., 2026-07-17) Newark post
2026, 26th Issue, part 1
(Newark, Del.: Chesapeake Pub. Corp., 2026-07-17) Newark post
Disorder-enhanced spin Hall effect in Ru-Pt alloy thin films
(Physical Review Applied, 2026-07-10) Bheemarasetty, Vineetha S.; Wang, Xinhao; Shrestha, Shreya; Jungfleisch, Benjamin; Gundlach, Lars; Xiao, John Q.; Xiao, Gang
The search for material systems exhibiting a large spin Hall effect is central to the development of ultrafast, energy-efficient spintronic technologies. We systematically investigate the spin Hall angle (SHA) in Ru-Pt binary alloys using three complementary techniques: spin-torque magneto-optic Kerr effect, spin-torque ferromagnetic resonance, and time-domain terahertz emission spectroscopy. Within the measured composition range, a maximum SHA of 0.158 is observed in Ru38⁢Pt62, representing a 56% enhancement over Pt while maintaining a resistivity below 70 μΩ cm. Notably, these high SHA values are achieved in as-grown sputtered films across the full composition range without the need for complex fabrication procedures or high-temperature annealing. These results establish Ru-Pt as a scalable model alloy system in which composition-driven disorder, together with gradual structural evolution, governs spin-charge conversion, providing a practical pathway for optimizing materials for spin-orbit torque devices.
Overview of the limb injury measurement battery for quality of life (LIMB-QOL)
(Quality of Life Research, 2026-07-04) Tulsky, David S; Tyner, Callie E; Boulton, Aaron J; Kisala, Pamela A; Slotkin, Jerry; Dearth, Christopher L; Childers, W. Lee; Zafonte, Ross; Kalpakjian, Claire; Kingsbury, Trevor; Choi, Seung W; Sherer, Mark; Bartlett, Susan; Tintle, Scott
Purpose The Limb Injury Measurement Battery for Quality of Life (LIMB-QOL) was developed to comprehensively assess patient reported outcomes (PRO) for research and clinical use with individuals who have sustained major extremity trauma and limb loss. Methods A mixed-methods approach was used that included qualitative focus groups with civilians, service members, and clinicians as well as quantitative PRO data collection with individuals with a history of major traumatic limb injury or limb-loss due to such trauma or sudden-onset illness. Individuals with dysvascular and other chronic disease causes were excluded. Qualitative data were collected via focus groups (n = 56 individuals with major extremity trauma; n = 34 clinicians) and cognitive debriefing interviews (n = 41 individuals with major extremity trauma). Quantitative data were obtained through structured phone interviews with a large sample representing the target limb trauma and limb loss population (n = 603). Newly developed item banks were calibrated using graded response model item response theory analysis. Results LIMB-QOL includes 25 measurement scales including 10 new, targeted item banks developed with and for individuals with major limb trauma and 15 existing PRO item banks measuring salient physical, emotional, and social aspects of health-related QOL. Computer adaptive tests and short forms were programmed into the Assessment Center application programming interface and are now available through REDCap and other platforms. Conclusion LIMB-QOL provides a comprehensive and standardized system of PRO assessments for individuals with amputation or limb preservation due to sudden-onset limb injury. Research and clinical applications are discussed.