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Danych Badawczych
Uniwersytetu Rzeszowskiego

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  • Miniatura
    Item type: Pozycja ,
    Probing GPDs in Exclusive Electroproduction of Dijets Data
    (American Physical Society, 2026-06-08) Chall, Trambak Jyoti; Łuszczak, Marta; Schäfer, Wolfgang; Szczurek, Antoni
    We summarize the formalism for calculating the exclusive dijet production in 𝑒⁢𝑝 →𝑒′⁢𝑗⁢𝑗⁢𝑝 in collinear QCD factorization, using generalized parton distributions as the soft hadronic input modeled in the double distribution approach. We include all leading-order contributions coming from light sea and valence quark exchanges, and gluon exchanges for both light quark-antiquark production and also the heavy 𝑐 ⁢\bar𝑐 final state. We present results for several differential distributions for the cross section evaluated over a broad region of phase space, covering a wide range of inelasticity and photon virtuality. The gluon and sea contributions exhibit similar shapes, whereas the valence contribution, though relatively small, shows a markedly different behavior. The latter becomes particularly noticeable at large 𝑥ℙ, a kinematic region not explored at HERA, but potentially accessible in future measurements at the Electron Ion Collider. This requires further feasibility studies. We also present the azimuthal angle modulation between the leptonic and the outgoing dijet planes for the general case, as well as for the ZEUS kinematic region where we see reasonable agreement with the data for diffractive deep inelastic scattering parameter 𝛽 ≳0.4.
  • Miniatura
    Item type: Pozycja ,
    Complete database of the oak regeneration census performed in 2022-2024 in abandoned agricultural land
    (2026-08) Bobiec, Andrzej
    Complete database of the oak regeneration census performed in 2022-2024 in abandoned agricultural land contains Excel spreadsheet including the cross-checked database of all records (oak seedlings/saplings) with their geographic coordinates. Besides basic biometric parameters (height, diameter of the root collar, diameter at breast hight, sread of crown), the table includes other qualitative traits. There is the box frame in the sheet with variables' definitions (in Polish) - sheet "DbRegAll-NCN". The second sheet "Delta-H" collects the data referring to the saplings' vertical growth rate.
  • Miniatura
    Item type: Pozycja ,
    Appearance Comparison Is the Strongest Independent Correlate of Eating Disorder Risk among Adolescents
    (MDPI, 2026-08-03) Polak-Szczybyło, Ewelina
    Background: Previous studies have demonstrated associations between social media use, body image, and the risk of eating disorders. However, it remains unclear whether these associations are attributable to social media use itself or to processes related to how users perceive and respond to the content encountered on these platforms. Methods: This cross-sectional study included 750 secondary school students aged 17–18 years. Participants completed an author-developed questionnaire assessing social media use, the perceived influence of social media content on body image, and com-parisons of their own body shape with those presented on social media, as well as the Eating Attitudes Test (EAT-26). Results: TikTok was the most frequently used social media platform. An elevated risk of eating disorders (EAT-26 ≥ 20) was identified in 9.7% of participants. Greater perceived influence of social media content on body im-age and more frequent body shape comparisons were independently associated with higher EAT-26 scores and a greater likelihood of scoring ≥20 on the EAT-26. Conclu-sions: Body image-related processes, particularly comparisons of one’s own body shape with those presented on social media, may be more relevant to eating disorder risk than the amount of time spent using social media itself. These findings highlight the importance of preventive interventions focused on media literacy and reducing maladaptive appearance comparisons.
  • Miniatura
    Item type: Pozycja ,
    GIS data related to the study of the grass fire effect on oak regeneration
    (2026-08) Bobiec, Andrzej
    GIS data related to the study of the grass fire effect on oak regeneration with map
  • Miniatura
    Item type: Pozycja ,
    Oak post-fire regeneration dynamics - field data
    (2026-07-29) Bobiec, Andrzej
    Approximately one hectare large lot of the post-agricultural area was subjected to grass burning in March 2026. All young oaks taller than 0.5 were identified and measured in the fire aftermath. For other woody species a simplified assessment was applied. Separate spreadsheets dedicated to oak and other species. Database contains geographic coordinats of trees. Detailed instruction in text boxes.