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Creators/Authors contains: "Clarke, Peter"

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  1. The increasing cyber threats to online systems have resulted in the need for a more inclusive approach to educating the broader population on preventative measures to reduce the impact of these threats. It is estimated that the cybercrime cost to the world will be $10.5 trillion annually by 2025. No longer can cybersecurity courses be specialized courses in university curricula, but some of these courses need to become core courses for all students. These courses should not only be tailored for university and college students but also be required to thread the curricula, starting in elementary schools. This paper describes our experiences conducting a collaborative cybersecurity project to increase access to undergraduate cybersecurity education. The project was funded by the NSF and Cyber Florida. The project was a collaboration between two Florida public universities. One university is a large urban Hispanic-Serving Institution. We describe how the Software Engineering and Programming Cyberlearning Environment (SEP-CyLE), in conjunction with other cybersecurity systems, was used to develop basic cybersecurity materials, labs, and activities for undergraduate students and instructors. SEP-CyLE motivates students to learn in an interactive environment where they can provide feedback to their peers while employing three learning and engagement strategies (LESs). These LESs include collaborative learning, gamification, and social interaction. We present the objectives of the project, describe how the objectives were met, briefly describe SEP-CyLE, and provide data showing students’ interactions with SEP-CyLE. The data retrieved from SEP-CyLE provides insight into how the learning environment was used, students’ performance on the learning objects, and the impact of the LESs on students’ overall performance in an introductory cybersecurity course. 
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    Free, publicly-accessible full text available June 22, 2026
  2. Online abuse, a persistent aspect of social platform interactions, impacts user well-being and exposes flaws in platform designs that include insufficient detection efforts and inadequate victim protection measures. Ensuring safety in platform interactions requires the integration of victim perspectives in the design of abuse detection and response systems. In this paper, we conduct surveys (n = 230) and semi-structured interviews (n = 15) with students at a minority-serving institution in the US, to explore their experiences with abuse on a variety of social platforms, their defense strategies, and their recommendations for social platforms to improve abuse responses. We build on study findings to propose design requirements for abuse defense systems and discuss the role of privacy, anonymity, and abuse attribution requirements in their implementation. We introduce ARI, a blueprint for a unified, transparent, and personalized abuse response system for social platforms that sustainably detects abuse by leveraging the expertise of platform users, incentivized with proceeds obtained from abusers. 
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    Free, publicly-accessible full text available March 3, 2026
  3. Abstract. For nearly 3 decades, geodetic Global Navigation Satellite System (GNSS) measurements in Antarctica have provided direct observations of bedrock displacement, which is linked to various geodynamic processes, including plate motion, post-seismic deformation, and glacial isostatic adjustment (GIA). Previous geodynamic studies in Antarctica, especially those pertaining to GIA, have been constrained by the limited availability of GNSS data. This is due to the fact that GNSS data are collected by a wide range of institutions and network operators, with the raw observational data either not publicly available or scattered across various repositories. Further, the metadata necessary for rigorous data processing have often not been available or reliable. Consequently, the potential of GNSS observations for geodynamic studies in Antarctica has not been fully exploited yet. Here, we present consistently processed coordinate time series for GNSS sites in Antarctica and the sub-Antarctic region for the time span from 1995 to 2021. The data set is composed of 286 continuous and episodic sites, with 258 sites having a time span longer than 3 years. The coordinate time series were obtained from a combination of four independent processing solutions using different GNSS software and products, allowing the identification of inconsistencies in individual solutions. From these, we infer a reliable and robust combined solution. A key issue was the thorough reassessment of station metadata to minimise artefacts and biases in the coordinate time series. The resulting data set provides coordinate time series with unprecedented spatiotemporal coverage, promising significant advancements in future geodynamic studies in Antarctica. The data set is freely available at https://doi.org/10.1594/PANGAEA.967515 (Buchta et al., 2024a). 
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    Free, publicly-accessible full text available January 1, 2026
  4. Measurements are presented of the cross-section for the central exclusive production ofJ/\psi\to\mu^+\mu^- J / ψ μ + μ and\psi(2S)\to\mu^+\mu^- ψ ( 2 S ) μ + μ processes in proton-proton collisions at\sqrt{s} = 13 \ \mathrm{TeV} s = 13 T e V with 2016–2018 data. They are performed by requiring both muons to be in the LHCb acceptance (with pseudorapidity2<\eta_{\mu^±} < 4.5 2 < η μ ± < 4.5 ) and mesons in the rapidity range2.0 < y < 4.5 2.0 < y < 4.5 . The integrated cross-section results are\sigma_{J/\psi\to\mu^+\mu^-}(2.0 σ J / ψ μ + μ ( 2.0 < y J / ψ < 4.5 , 2.0 < η μ ± < 4.5 ) = 400 ± 2 ± 5 ± 12 p b , σ ψ ( 2 S ) μ + μ ( 2.0 < y ψ ( 2 S ) < 4.5 , 2.0 < η μ ± < 4.5 ) = 9.40 ± 0.15 ± 0.13 ± 0.27 p b , where the uncertainties are statistical, systematic and due to the luminosity determination. In addition, a measurement of the ratio of\psi(2S) ψ ( 2 S ) andJ/\psi J / ψ cross-sections, at an average photon-proton centre-of-mass energy of1\ \mathrm{TeV} 1 T e V , is performed, giving$ = 0.1763 ± 0.0029 ± 0.0008 ± 0.0039,$$ where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the involved branching fractions. For the first time, the dependence of theJ/\psi$ J / ψ and\psi(2S) ψ ( 2 S ) cross-sections on the total transverse momentum transfer is determined inpp p p collisions and is found consistent with the behaviour observed in electron-proton collisions. 
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    Free, publicly-accessible full text available January 1, 2026