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DTSTART;TZID=America/Los_Angeles:20250915T100000
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DTSTAMP:20260426T021522
CREATED:20250905T070000Z
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SUMMARY:Van Duker\, N. (AM) - A Random Choice Hybrid Method for Resolving Shock Placement Errors in 1D Relativistic Hydrodynamics with Transverse Velocities
DESCRIPTION:This report presents a one-dimensional Random Choice-based hybrid method for simulating special relativistic hydrodynamics (SRHD) flow problems. The proposed scheme combines a high-order accurate method and a random choice method\, selectively applying the first to smooth flows and the second to shocks and discontinuities. This hybrid approach addresses the issue of incorrect wave placements in the presence of significant transverse velocity\, commonly encountered in one-dimensional SRHD shock tube tests. In support of this development\, we present a modified shock/contact detection switch\, specifically tuned for relativistic flows. We find that our method improves both the accuracy and computational performance when compared against existing methods on a well-known family of pathological shock tube problems. Our analysis of these pathological problems provides a path forward for further improving existing higher-dimensional methods. \nEvent Host: Nathan Van Duker\, Ph.D Student\, Applied Mathematics \nAdvisor: Dongwook Lee
URL:https://events.ucsc.edu/event/van-duker-n-am-a-random-choice-hybrid-method-for-resolving-shock-placement-errors-in-1d-relativistic-hydrodynamics-with-transverse-velocities/
LOCATION:Engineering 2\, Engineering 2 1156 High Street\, Santa Cruz\, CA\, 95064
GEO:37.0009723;-122.0632371
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DTSTART;TZID=America/Los_Angeles:20250915T143000
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SUMMARY:Lei\, K. (CM) - Designing for meaningful large-scale online communication\, connection\, and collective insight
DESCRIPTION:Digital technologies have made large-scale online interaction a central part of how people communicate\, connect\, and work together. Yet scaling often comes at the cost of depth\, and interactions can become superficial and chaotic\, drifting away from the richer interactional contexts of small-scale or in-person settings that support trust and meaningful exchange\, and that make it possible for participants to respond to and build constructively on one another’s ideas. Although recent advances such as large language models have opened new possibilities for shaping online interaction\, there has been relatively little exploration of how to design interaction mechanisms that take advantage of large-scale engagement while fostering interactions that are engaged\, authentic\, connected\, and generative. \nIn this dissertation\, I explore how large-scale online systems can be designed to support engaged and meaningful interaction at scale from three distinct angles: 1) creating few-to-many conversation structures that enable broad participation while maintaining coherence and a high level of engagement; 2) fostering authentic self-expression in ways that build connection; and 3) designing mechanisms that allow participants to interpret and constructively build on one another’s contributions to generate collective insight. I begin by designing a chat-based interface that organizes conversations through multi-person conversational units\, enabling one or a few mentors to effectively mentor a large-group of students. I then examine how to design a gratitude-focused online community that supports authentic and positive expressions of gratitude\, cultivating positive cycles of reflection and connection. Finally\, I introduce a large language model–powered survey platform that blends qualitative depth\, quantitative structure\, and collaborative interaction\, enabling respondents to engage with and build on each other’s ideas while providing survey creators with richer and more interpretable results. My work demonstrates how technological affordances and large-scale participation can be combined to create interaction mechanisms that support the move from isolated contributions toward shared understanding\, offering unique forms of engagement that small-scale or in-person settings cannot provide. \nEvent Host: Kehua Lei\, Ph.D. Candidate\, Computational Media  \nAdvisor: David Lee
URL:https://events.ucsc.edu/event/lei-k-cm-designing-for-meaningful-large-scale-online-communication-connection-and-collective-insight/
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DTSTART;TZID=America/Los_Angeles:20250915T170000
DTEND;TZID=America/Los_Angeles:20250915T170000
DTSTAMP:20260426T021522
CREATED:20250514T070000Z
LAST-MODIFIED:20250925T231311Z
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SUMMARY:Communicating Climate Solutions Symposium
DESCRIPTION:Timely\, effective and culturally appropriate communication is needed to encourage development and adoption of sustainable climate actions that mitigate the impacts of climate change. Toward this effort\, our symposium will bring together journalists\, researchers\, community leaders\, local officials and politicians to identify opportunities and best practices for developing and communicating climate change solutions with diverse communities. Our goal is to build networks\, share knowledge\, and broaden opportunities for effective climate solution communication through a California lens. This event is free for students but space is limited. \nHosted by the UCSC Science Communication Program and the UCSC Center for Coastal Climate Resilience
URL:https://events.ucsc.edu/event/communicating-climate-solutions-symposium/
LOCATION:Seymour Marine Discovery Center\, 100 McAllister Way\, Santa Cruz\, CA\, 95060
CATEGORIES:Lectures & Presentations
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