691. The conjecture on distance-balancedness of generalized Petersen graphs holds when internal edges have jumps $3$ or $4$Gang Ma, JianFeng Wang, Sandi Klavžar, 2025, original scientific article Abstract: A connected graph $G$ with ${\rm diam}(G) \ge \ell$ is $\ell$-distance-balanced if $|W_{xy}|=|W_{yx}|$ for every $x,y\in V(G)$ with $d_{G}(x,y)=\ell$, where $W_{xy}$ is the set of vertices of $G$ that are closer to $x$ than to $y$. Miklavič and Šparl [Discrete Appl. Math. 244 (2018), 143--154] conjectured that if $n > n_k$ where where $n_k = 11$ if $k = 2$, $n_k = (k+1)^2$ if $k$ is odd, and $n_k = k(k +2)$ if $k \ge 4$ is even, then the generalized Petersen graph $GP(n,k)$ is not $\ell$-distance-balanced for any $1\le \ell<{\rm diam}(GP(n,k))$. In the seminal paper, the conjecture was verified for $k=2$. In this paper we prove that the conjecture holds for $k=3$ and for $k=4$.
Keywords: distance-balanced graph, $\ell$-distance-balanced graph, generalized Petersen graph, diameter
Published in DiRROS: 07.11.2025; Views: 180; Downloads: 95
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695. Sistem za ocenjevanje kakovosti izvedbe del v gozdovihDarja Stare, Matevž Triplat, Peter Smolnikar, Vasja Kavčič, Žiga Lukančič, Špela Ščap, Marjan Dolenšek, Jaša Saražin, Gašper Ogrin, Matjaž Dovečar, Nike Krajnc, 2025, not set Keywords: gozdarstvo, izvedba del, kakovost, merila in indikatorji, kontrolni vprašalnik
Published in DiRROS: 06.11.2025; Views: 223; Downloads: 79
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696. Odprta znanost : Mala Loža, Koper, od 29. julija do 18. avgusta 2025 in Gallusovo nabrežje, Ljubljana, od 28. avgusta do 6. oktobra 20252025, exhibition Keywords: odprta znanost, občanska znanost, raziskovalni podatki, podatkovni svetovalec, repozitoriji, projekt SPOZNAJ
Published in DiRROS: 06.11.2025; Views: 291; Downloads: 292
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698. Initial observations on sexual dysfunction as a symptom of chemotherapy-induced peripheral neuropathyNadine Reimer, Dominik Ratiu, Damir Zubac, Helmar C. Lehmann, Freerk T. Baumann, 2023, other scientific articles Abstract: Introduction: Peripheral neuropathy (PNP) in feet and/or hands and sexual dysfunction are common side effects of cancer therapies. In Nadine Reimer1 Dirk Brodesser1 patients with other diseases, there is evidence of an association Dominik Ratiu2 between peripheral nervous system disorders and sexual dysfunction due to the impact of impaired neuronal control on genital organ sensi- Damir Zubac1 tivity. In cancer patient interviews, it has now been observed that PNP Helmar C. Lehmann3 and sexual dysfunction may be related. The aim of the study was to Freerk T. Baumann1 investigate the potential association between PNP, sexual dysfunction, and physical activity behavior. Methods: Ninety-three patients with PNP of the feet and/or hands were interviewed in August/September 2020 in a cross-sectional study re- 1 University of Cologne, Department I of Internal garding medical history, sexual dysfunction and functionality of the genital organs. Medicine, Center for Integrated Oncology Aachen Results: Thirty-one persons who participated in the survey provided Bonn Cologne Dusseldorf, seventeen evaluable questionnaires (four men, thirteen women). Nine University Hospital of women (69%) and three men (75%) reported sensory disorders of the Cologne, Germany genital organs. Three men (75%) had erectile dysfunction. All men who 2 University of Cologne, Clinic had sensory symptoms of the genital organs received chemotherapy, and Polyclinic for Gynecology and Obstetrics, University Hospital Cologne, Germany and one man also received immunotherapy. Eight women were sexually active. Five (63%) of them reported genital organ symptoms and mainly lubrication disorders. Four (80%) of the five sexually inactive women 3 University of Cologne, Clinic reported genital organ symptoms. Eight of the nine women with sensory and Polyclinic for Neurology, University Hospital Cologne, Germany symptoms of the genital organs received chemotherapy, and one woman received immunotherapy. Discussion: Our limited data suggest genital organ sensory symptoms in chemotherapy and immunotherapy patients. Genital organ symptoms do not appear to be directly related to sexual dysfunction, and the association between PNP and genital organ symptoms appears to be more pronounced in sexually inactive women. Chemotherapy could cause sensory symptoms of the genital organs and sexual dysfunction by damaging genital organ nerve fibers. Chemotherapy and anti-hormone therapy (AHT) could trigger a disturbance of the hormone balance, which in turn could be causative for sexual dysfunction. It remains open whether the cause of these disorders is the symptomatology of the genital organs or the altered hormone balance. The significance of the results is limited due to the small number of cases. To our knowledge, this study is the first of its kind in cancer patients and allows a better understanding of the association between PNP, sensory symptoms of the genital organs, and sexual dysfunction. Conclusion: In order to be able to narrow down the cause of these initial observations in cancer patients more precisely, larger studies are needed that can relate the influence of cancer therapy-induced PNP, physical activity level and hormone balance to sensory symptoms of the genital organs and sexual dysfunction. The methodology of further studies should take into account the frequent problem of low response rates in surveys on sexuality.
Keywords: peripheral neuropathy, genital organs, sexual disfunction, oncology, exercise therapy, physical activity
Published in DiRROS: 05.11.2025; Views: 190; Downloads: 103
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699. Data from 'Spatiotemporal variability of dendroecological indicators in pedunculate oak (Quercus robur L.) tree-rings across Europe in relation to species distribution models' : version v1.0Andrei Popa, Jernej Jevšenak, Marcin K. Dyderski, Radosław Puchałka, Allan Buras, Ionel Popa, Martin Wilmking, Aleksandra Kalisty, Marcin Jakubowski, Eric Andreas Thurm, 2025, complete scientific database of research data Abstract: Climate is a primary, but non-stationary, driver of tree growth. Climate change is altering the sensitivity of forest growth to water availability and temperature over time. It is considered that pedunculate oak (Quercus robur L.) will cope with the changing climatic conditions in Europe in the near future. However, while species distribution models project expansion zones, they also identify reductions in occurrence at the dry and warm distribution margins. Whereas species distribution models primarily rely on occurrence data, tree rings––given their long-term perspective and their use in empirical models––can provide a mechanistic view of forest growth dynamics, including temporally changing climate responses. Increased climate sensitivity and growth synchrony are key dendroecological indicators of tree stress. Here, we used an unprecedented network of 150 Q. robur sites (over 3,300 trees), covering the full projected range of contracting to persistent areas across Europe, to assess the dendroecological indicators over recent decades in relation to species distribution model predictions. We reveal that oaks in areas projected to experience range contraction exhibited greater sensitivity to current growing season climatic conditions, whereas those in persistence areas responded more strongly to previous season conditions. Growth synchrony among trees was higher in the contraction areas, but showed no significant increasing trend over the last 70 years, as expected from ecotone theory. Temporal shifts in climate sensitivity were stronger for temperature and vapor pressure deficit in the persistence areas, whereas the climatic water balance gained importance in the contraction zones. These findings suggest that Q. robur growth is not yet being severely affected by climate change, and that the species is currently coping well with the climate changes, even in regions with projected range contractions, thereby challenging statistically derived scenarios of range shift based on species distribution models.
Keywords: adaptation, allometry, phloemsieve element, xylem vessel
Published in DiRROS: 04.11.2025; Views: 194; Downloads: 93
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700. Spatiotemporal variability of dendroecological indicators in pedunculate oak (Quercus robur L.) tree-rings across Europe in relation to species distribution modelsAndrei Popa, Jernej Jevšenak, Marcin K. Dyderski, Radosław Puchałka, Allan Buras, Ionel Popa, Martin Wilmking, Aleksandra Kalisty, Catalin Constantin Roibu, Marcin Jakubowski, 2025, original scientific article Abstract: Climate is a primary, but non-stationary, driver of tree growth. Climate change is altering the sensitivity of forest growth to water availability and temperature over time. It is considered that pedunculate oak (Quercus robur L.) will cope with the changing climatic conditions in Europe in the near future. However, while species distribution models project expansion zones, they also identify reductions in occurrence at the dry and warm distribution margins. Whereas species distribution models primarily rely on occurrence data, tree rings—given their long-term perspective and their use in empirical models—can provide a mechanistic view of forest growth dynamics, including temporally changing climate responses. Increased climate sensitivity and growth synchrony are key dendroecological indicators of tree stress. Here, we used an unprecedented network of 150 Q. robur sites (over 3300 trees), covering the full projected range of contracting to persistent areas across Europe, to assess the dendroecological indicators over recent decades in relation to species distribution model predictions. We reveal that oaks in areas projected to experience range contraction exhibited greater sensitivity to current growing season climatic conditions, whereas those in persistence areas responded more strongly to previous season conditions. Growth synchrony among trees was higher in the contraction areas, but showed no significant increasing trend over the last 70 years, as expected from ecotone theory. Temporal shifts in climate sensitivity were stronger for temperature and vapor pressure deficit in the persistence areas, whereas the climatic water balance gained importance in the contraction zones. These findings suggest that Q. robur growth is not yet being severely affected by climate change, and that the species is currently coping well with the climate changes, even in regions with projected range contractions, thereby challenging statistically derived scenarios of range shift based on species distribution models.
Keywords: climate change scenarios, climate–growth relationships, climatic water balance, growth synchrony, range contraction, vapor pressure deficit
Published in DiRROS: 04.11.2025; Views: 215; Downloads: 97
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