More Like this

1. Design Principles for Background Knowledge to Enhance Learning in Citizen Science

   https://doi.org/10.1007/978-3-031-28032-0_43  

   Crowston, K.; Jackson, C.; Corieri, I.; Østerlund, C. (January 2023, Information for a Better World: Normality, Virtuality, Physicality, Inclusivity. iConference 2023. Lecture Notes in Computer Science, vol 13972)

   Sserwanga, I. (Ed.)

   Citizen scientists make valuable contributions to science but need to learn about the data they are working with to be able to perform more advanced tasks. We present a set of design principles for identifying the kinds of background knowledge that are important to support learning at different stages of engagement, drawn from a study of how free/libre open source software developers are guided to create and use documents. Specifically, we suggest that newcomers require help understanding the purpose, form and content of the documents they engage with, while more advanced developers add understanding of information provenance and the boundaries, relevant participants and work processes. We apply those principles in two separate but related studies. In study 1, we analyze the background knowledge presented to volunteers in the Gravity Spy citizen-science project, mapping the resources to the framework and identifying kinds of knowledge that were not initially provided. In study 2, we use the principles proactively to develop design suggestions for Gravity Spy 2.0, which will involve volunteers in analyzing more diverse sources of data. This new project extends the application of the principles by seeking to use them to support understanding of the relationships between documents, not just the documents individually. We conclude by discussing future work, including a planned evaluation of Gravity Spy 2.0 that will provide a further test of the design principles. 

   more » « less
2. ATLAS Run 2 searches for electroweak production of supersymmetric particles interpreted within the pMSSM

   https://doi.org/10.1007/JHEP05(2024)106  

   Aad, G; Abbott, B; Abeling, K; Abicht, N J; Abidi, S H; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, B S; et al (May 2024, Journal of High Energy Physics)

   A<sc>bstract</sc> A summary of the constraints from searches performed by the ATLAS collaboration for the electroweak production of charginos and neutralinos is presented. Results from eight separate ATLAS searches are considered, each using 140 fb⁻¹of proton-proton data at a centre-of-mass energy of$$ \sqrt{s} $$ $\sqrt{s}$= 13 TeV collected at the Large Hadron Collider during its second data-taking run. The results are interpreted in the context of the 19-parameter phenomenological minimal supersymmetric standard model, whereR-parity conservation is assumed and the lightest supersymmetric particle is assumed to be the lightest neutralino. Constraints from previous electroweak, flavour and dark matter related measurements are also considered. The results are presented in terms of constraints on supersymmetric particle masses and are compared with limits from simplified models. Also shown is the impact of ATLAS searches on parameters such as the dark matter relic density and the spin-dependent and spin-independent scattering cross-sections targeted by direct dark matter detection experiments. The Higgs boson andZboson ‘funnel regions’, where a low-mass neutralino would not oversaturate the dark matter relic abundance, are almost completely excluded by the considered constraints. Example spectra for non-excluded supersymmetric models with light charginos and neutralinos are also presented. 

   more » « less
3. Measurements of inclusive and differential cross sections for top quark production in association with a Z boson in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

   https://doi.org/10.1007/JHEP02(2025)177  

   Hayrapetyan, A; Tumasyan, A; Adam, W; Andrejkovic, J W; Bergauer, T; Chatterjee, S; Damanakis, K; Dragicevic, M; Hussain, P S; Jeitler, M; et al (February 2025, Journal of High Energy Physics)

   A<sc>bstract</sc> Measurements are presented of inclusive and differential cross sections for Z boson associated production of top quark pairs ($$ \textrm{t}\overline{\textrm{t}}\textrm{Z} $$ $t\overline{t}Z$) and single top quarks (tZq or tWZ). The data were recorded in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb⁻¹. Events with three or more leptons, electrons or muons, are selected and a multiclass deep neural network is used to separate three event categories, the$$ \textrm{t}\overline{\textrm{t}}\textrm{Z} $$ $t\overline{t}Z$and tWZ processes, the tZq process, and the backgrounds. A profile likelihood approach is used to unfold the differential cross sections, to account for systematic uncertainties, and to determine the correlations between the two signal categories in one global fit. The inclusive cross sections for a dilepton invariant mass between 70 and 110 GeV are measured to be 1.14 ± 0.07 pb for the sum of$$ \textrm{t}\overline{\textrm{t}}\textrm{Z} $$ $t\overline{t}Z$and tWZ, and 0.81 ± 0.10 pb for tZq, in good agreement with theoretical predictions. 

   more » « less
4. Executive Functions: What are they Good for? A Perspective from Intervention Research

   https://doi.org/10.1111/mbe.12371  

   Barnes, Marcia A. (June 2023, Mind, Brain, and Education)

   ABSTRACT Because deficits in executive functions (EFs) characterize most neurodevelopmental disorders, it is appropriate to question the value of EFs for understanding learning disabilities. Two types of studies—those testing whether EFs moderate treatment effects and those testing the direction of effects between EFs and academic skills—are presented to support the idea that EFs are useful for the study of learning disabilities in the context of intervention. Moderator effects in reading and math intervention studies suggest that considering EFs to be properties of not only persons, but also interventions is important for understanding treatment effects and for designing more effective interventions. An experimental study comparing math word problem solving interventions and EF interventions provides evidence for bidirectional development of working memory and math word problem solving. Directions for future experimental research that systematically and more rapidly investigate growth in EFs and academic skills in individuals with learning disabilities are presented. 

   more » « less
5. Efforts to Improve Mathematical Preparation for a Pre-Engineering Program at Tribal Colleges in North Dakota

   Luecke, D.; Allard, A. J.; Parker, M. M.; Vallie, A.; Allery, T. A.; Pieri, R. V. (July 2020, 2020 First-Year Engineering Experience)

   Developmental math preparation is integral in a pre-engineering pathway. This paper analyzes the efforts to improve remedial math passing rates at two tribal colleges in North Dakota participating in a pre-engineering collaborative. Previous work in progress addressed portions of these approaches, but here a more complete set of quantitative data is presented along with further analysis using the theoretical framework of Tribal Critical Race Theory. 

   more » « less