8468 research outputs found
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Challenges Threatening the Sustainability of School Meal Programs
No full textThe sustainability of school meal programs is increasingly threatened by procurement challenges, including regulatory constraints, supply chain disruptions, and budgetary pressures. This capstone project examines how values-based procurement (VBP)—which prioritizes local, sustainable, and nutritionally rich food—can be integrated into school meal programs despite these challenges. Worcester Public Schools (WPS) serves as a case study to illustrate the obstacles districts face in implementing VBP and the opportunities available for improving procurement models. Key findings from this research highlight the following: • Regulatory Constraints: Federal procurement policies, while intended to ensure fairness, often create barriers for schools trying to source locally or from small-scale vendors. • Supply Chain Disruptions: Labor shortages and food distribution inefficiencies continue to challenge schools’ ability to maintain consistent meal quality
Insider risk aversion and trade informativeness: evidence from pre-option-grant selling
No full textWe examine whether corporate insiders’ stock sales prior to option grant dates reflect underlying risk preferences and influence the informativeness of their trading. Consistent with previous studies suggesting that insiders increase sales before option grants for risk-aversion purposes, we find that trades by pre-grant sellers are significantly less informative, and that the magnitude of pre-grant selling predicts lower trading profitability. These findings suggest that pre-grant selling behavior serves as a proxy for insiders’ risk aversion and helps explain variation in trading informativeness. © 2025 Elsevier Inc
People gathered outside building during Black Student Union sit-in, February 20, 1969
No full textPhotograph of people gathered outside a Clark University building during the Black Student Union\u27s sit-in on February 20, 1969. Protest signs are also pictured.
All photographs in this collection were digitized between 2022 and 2023.
The photographs in this collection are part of the Photographs and Media record group of Clark University’s Archives & Special Collections.https://commons.clarku.edu/bsu/1009/thumbnail.jp
Clark University President Frederick H. Jackson being interviewed about Black Student Union sit-in, February 20,1969
No full textClark University President Frederick H. Jackson being interviewed about the Black Student Union sit-in on February 20, 1969.
All photographs in this collection were digitized between 2022 and 2023. The photographs in this collection are part of the Photographs and Media record group of Clark University’s Archives & Special Collections.https://commons.clarku.edu/bsu/1006/thumbnail.jp
Black Student Union sponsored performance, circa 1970s-1980s
No full textPhotograph of what is presumably a Black Student Union sponsored performance, circa 1970s-1980s.
All photographs in this collection were digitized between 2022 and 2023. The photographs in this collection are part of the Photographs and Media record group of Clark University’s Archives & Special Collections.https://commons.clarku.edu/bsu/1005/thumbnail.jp
Students at Black Student Union dance [2], 1985
No full textPhotograph of a Black Student Union party, April 1985.
All photographs in this collection were digitized between 2022 and 2023. The photographs in this collection are part of the Photographs and Media record group of Clark University’s Archives & Special Collections.https://commons.clarku.edu/bsu/1003/thumbnail.jp
Students working in laboratory, unknown date
No full textCandid photograph of Clark University students working in a laboratory, date unknown.
All photographs in this collection were digitized between 2022 and 2023. The photographs in this collection are part of the Photographs and Media record group of Clark University’s Archives & Special Collections.https://commons.clarku.edu/classroom/1000/thumbnail.jp
A Pan-Amazonian dataset integrating 20 years of respiratory, cardiovascular, zoonotic and vector-borne disease cases and landscape changes
No full textAs anthropogenic pressures continue to impact the environment, human health is expected to be subsequently affected. This dataset provides a comprehensive view of the trends and burden of infectious diseases, along with environmental metrics, across the Amazon biome between 2000 and 2019. The dataset includes health indicators for respiratory, cardiovascular, and major zoonotic and vector-borne diseases (Chagas disease, hantavirus, cutaneous leishmaniasis, visceral Leishmaniasis, rickettsial diseases, and malaria), compiled as annual case counts at the municipal level. The innovation of this dataset lies in its unprecedented assembly of data for this transboundary biome—much of it requiring ground-level collection beyond available in online repositories. By integrating health and environmental indicators, this dataset offers a unique resource for analyzing the complex relationships between environmental transformations and health outcomes. It supports future research informing evidence-based public health strategies, and conservation efforts to address the interconnected socio-environmental challenges of this cornerstone of planetary health, home to more than 30 million people. © The Author(s) 2025
Bundling architecture in elastic filaments with applied twist
No full textWe investigate the formation of helical multifilament bundles and the torque required to achieve them as a function of applied twist. Hyperelastic filaments with circular cross sections are mounted parallel in a uniform circle onto end-clamps that can move along the twist axis depending on the applied axial load. With increasing twist, the filaments describe a hyperbolic hyperboloid surface before coming into contact in a circle and then packing in a tight helical bundle in the center with increasing twist. While the bundle appears ordered for sufficiently small number of filaments, they are disordered for large enough number of filaments and applied twist. We reveal with x-ray tomography that the packing of the filaments becomes disordered following a radial instability, which leads to a decrease in bundle radius and migration of filaments relative to each other in the bundle. Nonetheless, the helical angle of the filaments in the bundle are found to be essentially constant, resulting in inclination angles which increase with distance from axis of rotation. We develop energy minimization analysis to capture the observed variations in bundle length and torque as a function of number of filaments considering the neo-Hookean nature of the filaments. We show that the bundle geometry and the applied load can be used to describe the nonlinear torque profile measured as a function of twist angle
The Resonant Geometry Field Model: Mapping the Fluid Dynamics of Emotion, Syntax, and Resonance
No full textWe present a minimal field model of communication—resonance geometry—in which 11 core emotions emerge as geometric features of a shared medium rather than as discrete labels. This model extends the Theory of Communication Resonance & Intelligence Tuning (ToCRIT) by translating its qualitative constructs—resonant tethers (connection “wells” between communicators), lucid/drag zones (smooth vs resistant flow of emotion and syntax), and the Cognitive-Emotive Fracture Principle (closeness in syntax or emotion can increase risk of rupture)—into quantifiable field metrics: throughput (), rigidity (ρ), coupling (k), and hemispheric shear (α).
Additional modifiers include a Ranvier–Stokes analogue (continuity punctuated by “node kicks”) and a death-gravity term () capturing salience distortions near conversational endings. Pilot studies reveal that shifts in k and α reliably mark authenticity, rupture, and repair—across public speech, acted grief, and cross-species resonance (e.g., whale vocalizations).
The model offers falsifiable predictions, lightweight measurement protocols, and cross-domain applications—from conversation UX to human–AI attunement. By linking poetic metaphors (wells, rogue waves) to reproducible metrics, resonance geometry operationalizes a fluid-dynamic layer of resonant communication