18062 research outputs found
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Foundations for Multi-Bit-Per-Cell Phase Change Memory Modeling GST Crossbar Arrays
No full textThis project builds a simulation foundation for selective cell heating in a phase-change memory (PCM) crossbar using Ge2Sb2Te5 (GST) as the active material. Using COMSOL Multiphysics® a 3D modeling software, couples Electric Currents, Electric Circuits, Heat Transfer in Solids, and Electromagnetic Heating for the simulation. A parameterized Tungsten (W)/GST-Amorphous/GST-Crystalline(phases) /W embedded in Silica Dioxide (SiO2) and surrounded in Silica Nitride (Si3N4) is validated at the single-cell level and scaled to small GST crossbars A terminal voltage (V_active/V_inactive, or 0 V if unselected) is applied through MOSFET and diode selector elements at the ends of each word line and bit line. These selectors control current flow and confine heating to the targeted cell while minimizing impact on neighboring cells. Simulation results show that milliamp-level current and Joule heating localize to the selected junction, raising its temperature to approximately 325 K, while surrounding cells remain near ambient with minimal thermal crosstalk. These findings confirm effective electrical steering and thermal isolation, providing a validated baseline for extending the platform to include latent-heat and crystallization kinetics, time-dependent pulse trains, and larger arrays aimed at multi-bit-per-cell operation in Artificial Intelligence hardware
The (in)effect of Trump-era anti-immigrant policies and rhetoric on international students: Perceptions of and experiences in US higher education
No full textThis exploratory study investigates international graduate students’ experiences studying in the US during the years of the Trump Administration, its influence on their mental health, and how their experiences have been different since. We surveyed international graduate students at a large public research institution in the Southeastern US who started their degrees in the US between 2017 and 2020, using a mixed-methods approach. The findings reveal that students had a negative perception of Trump Administration policies and rhetoric and were most negatively affected by those relating to visa status during the pandemic, travel bans, and student work authorization (OPT, CPT). Students’ mental health suffered during the years of the Trump Administration yet improved after President Biden was elected, with students anticipating more positive outcomes to come. The findings of this study can inform policy and practice around international graduate student recruitment, institutional services, and mental health support
The Third Goal of Higher Education Internationalization: A Reflective Essay
No full textThe third goal of higher education internationalization is a global education goal of building a more equitable world, after the individual goal of preparing students’ intercultural competence for a global job market and the national goal of gaining a country’s competitiveness in the global knowledge economy. The third goal has not been prioritized in past internationalization practices. This reflective essay hopes to highlight the raw fact that if the third goal is not achieved, the first two goals will be at risk. A global education turn is forced upon us in higher education internationalization. It is imperative for universities to foreground the third goal of internationalization through a focus on educating global citizens. Strengthening global citizenship education is a realistic and tangible action that universities can take to start an ethical turn in higher education internationalization
Investigating the Connection Between Liberal Arts and Sciences Education and Democracy: Representing Marginal Groups
No full textThis study investigates the role of liberal arts and sciences (LAS) education in fostering democratization through the representation of Morocco’s Amazigh community. Drawing on interviews and focus groups with Amazigh students at Al Akhawayn University (AUI), the research employs a qualitative framework to explore themes of linguistic identity, curriculum inclusivity, and institutional support. Findings reveal gaps in cultural representation despite AUI’s commitment to global citizenship, highlighting the need for representative curriculum, cultural programming, and faculty representing that community. The study contributes to comparative higher education by underscoring LAS institutions’ potential to advance democracy through equitable representation of marginalized groups. Recommendations include integrating Amazigh language courses, amplifying cultural events, and addressing systemic barriers to inclusion
UConn-ILCC NMC/Gr Battery Aging Dataset
No full textThis dataset encompasses 44 Panasonic UR18650AA cells cycled under 11 unique conditions until an end-of-life of 65% remaining capacity. Cycling tests were performed under ambient conditions (~22 degrees Celsius) and were interrupted approximately every 3.5 days (~100 cycles, depending on the charge rate, discharge rate, and depth of discharge) to perform a reference performance test (RPT). During the RPT, the cell’s remaining capacity is measured, and 100-second-long, 1C constant-current pulses are conducted at nine states of charge (SOC): 10%, 20%, …, and 90%. The cycling and RPT data are sampled at 1Hz and span over 35 weeks of testing. Additional details on the cycling protocols and RPT diagnostics are provided in Nowacki et al. (DOI to be added soon) and the “README.txt” file attached below
Music Making to Transgress: A Phenomenology of Transgressive American Music Educators
No full textThis phenomenological case study examined four self-described transgressive music teachers in the United States. Transgressive teachers may be described as those who challenge oppressive structures, both in educational settings and in the broader social context, to support marginalized students. Findings suggest that teacher identity creation and analytic frameworks of oppressive structures shape the elements of their transgressive pedagogies. These findings also suggest varied paths of becoming for transgressive teachers. The researcher concludes with suggestions for further research and implications for current teachers
Investigating the Presence of R-loops at the Centromeres of Drosophila melanogaster
No full textThis study investigates the presence and localization of R-loops at the centromeres of Drosophila melanogaster. R-loops are non-canonical nucleic acid structures that have been implicated in various cellular processes, including genomic instability and accurate chromosome segregation. Although previous research has found R-loops at Drosophila satellite sequences and LTR retrotransposons, their presence and function at the centromeres of a whole organism remain largely unknown. Using IF-FISH (immunofluorescence-fluorescence in situ hybridization), we stained R-loops with the S9.6 antibody. A UAS-rnh1 overexpression line was used to induce the overexpression of RNase H1, an enzyme that resolves R-loops, to confirm the specificity of the S9.6 antibody signal. Our results showed that while inducing rnh1 overexpression did cause a decrease in the frequency of colocalization between S9.6 and CENP-C at all centromeres, this change was only statistically significant for centromere X. Similarly, the decrease in S9.6 and rDNA colocalization was only statistically significant for the X chromosome. The S9.6 signal intensity did not significantly change after induction of rnh1 overexpression. These findings prevent any definitive conclusions regarding the presence of R-loops at Drosophila centromeres
A Systematic Review of Weight Loss Interventions Among Black Postpartum Women
No full textCardiovascular disease is a leading contributor to maternal mortality, which remains disproportionately high among Black women. Obesity and postpartum weight retention exacerbate cardiovascular disease risk and increase the likelihood of complications in future pregnancies. Weight loss during the postpartum period may reduce long-term chronic health risks and mortality for Black women. This systematic review aimed to understand the weight-related health needs of Black postpartum women by evaluating behavioral weight loss interventions within the first year after childbirth. A comprehensive search of the PubMed database identified 3 randomized controlled trials that met inclusion criteria. These studies evaluated home-based programs, mobile health applications, and group-based interventions promoting dietary changes, physical activity, and behavioral support. While the interventions showed promising trends in reducing postpartum weight retention and obesity, none achieved the clinically significant target of 5–10% weight loss from baseline. Greater cultural tailoring and participant engagement were linked to improved outcomes. However, structural challenges such as limited access to care and socioeconomic inequities continue to hinder progress. These findings highlight the need for culturally responsive behavioral interventions that can be widely implemented to support the postpartum health of Black women. Future research should focus on expanding sample sizes and integrating community-driven strategies to enhance both effectiveness and long-term sustainability
The Perceptions of Senior International Officers on Internationalization Strategies at Research Universities
No full textThis dissertation utilized semi-structured interviews with 15 Senior International Officers at U.S. research universities to interrogate three institutional issues: 1) motivations for internationalization, 2) strategies for internationalization, and 3) leadership for internationalization. Through inductive data analysis, the first finding uses globalization theory to explore how SIOs navigate the tension between global collaboration and competition, serving as both mission stewards and strategic advisors within research universities. The second finding utilizes contingency theory to depict how internationalization is a driver of mobility, cross-cultural learning, and global integration, yet often disrupts institutional norms, introduces unfamiliar ideas, and challenges the status quo. The third finding draws upon intellectual leadership theory to detail how SIOs navigate institutional structures, leadership expectations, and external pressure to advance global engagement. Overall, findings underscore the need for adaptive leadership and collaborative governance during a time of significant disruption in U.S. higher education