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Abstract: For an arbitrary normed space ${\mathcal X}$ over a field ${\mathbb F} \in \{ {\mathbb R}, {\mathbb C} \}$, we define the directed graph $\Gamma({\mathcal X})$ induced by Birkhoff-James orthogonality on the projective space ${\mathbb P}({\mathcal X})$, and also its nonprojective counterpart $\Gamma_0({\mathcal X})$. We show that, in finite-dimensional normed spaces, $\Gamma({\mathcal X})$ carries all the information about the dimension, smooth points, and norm's maximal faces. It also allows to determine whether the norm is a supremum norm or not, and thus classifies finite-dimensional abelian $C^\ast$-algebras among other normed spaces. We further establish the necessary and sufficient conditions under which the graph $\Gamma_0(\mathcal{R})$ of a (real or complex) Radon plane ${\mathcal R}$ is isomorphic to the graph $\Gamma_0({\mathbb F}^2, \|\cdot\|_2)$ of the two-dimensional Hilbert space and construct examples of such nonsmooth Radon planes.
Keywords: normed spaces, Birkhoff-James orthogonality, orthodigraph, dimension, smoothness, rotundness, Radon plane
Published in DiRROS: 20.03.2025; Views: 155; Downloads: 201
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Published in DiRROS: 20.03.2025; Views: 137; Downloads: 177
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Abstract: Peer victimization and anxiety are consistently positively correlated, though the longitudinal relationship remains inconsistent. Previous research often failed to ac count for the reciprocal relationship between traditional and cyber victimization, with limited evidence of the influence of broader societal factors. Thus, the present study aimed to longitudinally examine the relationship between victimization, cyber victimization, and anxiety within the specific context of the COVID-19 pandemic during one school year (2021/22), employing both the cross-lagged panel model and the random-intercept cross-lagged panel model. The study included 1766 stu dents (58.5% females; Mage= 15.33; SD = 1.20) from lower- and upper-secondary schools in Slovenia who participated in three time-points with approximately 8 weeks apart, with T1 occurring before school closures, T2 during school closures (which lasted 17–21 weeks), and T3 after school closures. Findings revealed that the relationship between anxiety and victimization changed across the school year. The results of the cross-lagged panel model indicated that traditional victimization in T1 positively predicted anxiety in T2, and anxiety in T2 positively predicted traditional victimization in T3. Cyber victimization at T2 predicted lower anxiety at T3. The results of the random-intercept cross-lagged panel model showed that t the within-person level, students experiencing more cyber victimization than ex pected reported greater subsequent victimization, especially after school closures. The study provides insights into the dynamics of the relationship between peer victimization and anxiety during a specific period of school closure. The findings do not fully align with any single theoretical model, highlighting the complexity of these interactions in the pandemic context. This study underscores the need to con sider broader socio-environmental factors in understanding the relationship between peer relationships and psychosocial outcomes.
Keywords: victimization, cyber victimization, enxiety, middle adolescents, longitudinal studies, school closure
Published in DiRROS: 20.03.2025; Views: 119; Downloads: 33
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Abstract: V monografiji Fenomenološka psihopatologija in fenomenologija zlorabe se Zmago Švajncer Vrečko loteva dveh različnih področij, in sicer: fenomenološke psihopatologije, ki se osredotoča na dismorfno telesno motnjo, in fenomenologije zlorabe, ki jo zasnuje zlasti v povezavi z dementnimi osebami in duhovno zlorabo. Obe temi povezuje poskus, da bi v interdisciplinarni pristop vključili filozofsko perspektivo, ki v prevladujočih psiholoških obravnavah običajno ni upoštevana. Pri obeh temah monografije se srečujemo z nujnostjo, da psihologija in psihiatrija razširita svoj empirično znanstveni pristop s poglobljenim razmislekom, kako razumeti človeka v raznolikosti njegovih razsežnosti. Avtor v drugem delu ugotavlja, da se v odnosu do dementnih oseb premalo upošteva prvoosebno izkustvo, kar povečuje možnost zlorab njihovega dostojanstva. Podobno kot fenomenološki pristop k telesu je potreben fenomenološki pristop k duhovnosti. Ideje so podkrepljene s spoznanji, do katerih je avtor prišel pri svojem terapevtskem delu po inovativni metodi relacijske družinske terapije. V teme, ki jih večinoma obvladajo empirične znanosti, vnese avtor globlji filozofski oz. fenomenološki razmislek, ki bi omogočil resnično interdisciplinarnost. Monografija pomembno prispeva k napredku interdisciplinarnega študija relacijsko družinske paradigme, psihologije, psihiatrije, fenomenologije utelešenosti, fenomenološke psihopatologije, filozofije duhovnosti, estetike, teologije in okoljske etike.
Keywords: fenomenologija, zlorabe, psihopatologija
Published in DiRROS: 19.03.2025; Views: 147; Downloads: 48
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Abstract: The Collective Article %New Mediterranean Biodiversity Records% of the Mediterranean Marine Science journal offers the means to publish biodiversity records in the Mediterranean Sea. The current article is divided in two parts, for records of native and alien species respectively. The new records of native species include: the neon flying squid Ommastrephes bartramii in Capri Island, Thyrrenian Sea; the bigeye thresher shark Alopias superciliosus in the Adriatic Sea; a juvenile basking shark Cetorhinus maximus caught off Piran (northern Adriatic); the deep-sea Messina rockfish Scorpaenodes arenai in the National Marine Park of Zakynthos (East Ionian Sea, Greece); and the oceanic puffer Lagocephalus lagocephalus in the Adriatic Sea. The new records of alien species include: the red algae Antithamnionella elegans and Palisada maris-rubri, found for the first time in Israel and Greece respectively; the green alga Codium parvulum reported from Turkey (Aegean Sea); the first record of the alien sea urchin Diadema setosum in Greece; the nudibranch Goniobranchus annulatus reported from South-Eastern Aegean Sea (Greece); the opisthobranch Melibe viridis found in Lebanon; the new records of the blue spotted cornetfish Fistularia commersonii in the Alicante coast (Eastern Spain); the alien fish Siganus luridus and Siganus rivulatus in Lipsi Island, Dodecanese (Greece); the first record of Stephanolepis diaspros from the Egadi Islands Marine Protected Area (western Sicily); a northward expansion of the alien pufferfish Torquigener flavimaculosus along the southeastern Aegean coasts of Turkey; and data on the occurrence of the Lessepsian immigrants Alepes djedaba, Lagocephalus sceleratus and Fistularia commersonii in Zakynthos Island (SE Ionian Sea, Greece).
Published in DiRROS: 19.03.2025; Views: 126; Downloads: 231
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