TY - JOUR AU - Waldmann, Urs AU - Chan, Alex Hoi Hang AU - Naik, Hemal AU - Nagy, Máté AU - Couzin, Iain D. AU - Deussen, Oliver AU - Goldluecke, Bastian AU - Kano, Fumihiro TI - 3D-MuPPET: 3D Multi-Pigeon Pose Estimation and Tracking JF - INTERNATIONAL JOURNAL OF COMPUTER VISION J2 - INT J COMPUT VISION VL - 1 PY - 2024 SP - 1 EP - 18 PG - 18 SN - 0920-5691 DO - 10.1007/s11263-024-02074-y UR - https://m2.mtmt.hu/api/publication/34851678 ID - 34851678 AB - Markerless methods for animal posture tracking have been rapidly developing recently, but frameworks and benchmarks for tracking large animal groups in 3D are still lacking. To overcome this gap in the literature, we present 3D-MuPPET, a framework to estimate and track 3D poses of up to 10 pigeons at interactive speed using multiple camera views. We train a pose estimator to infer 2D keypoints and bounding boxes of multiple pigeons, then triangulate the keypoints to 3D. For identity matching of individuals in all views, we first dynamically match 2D detections to global identities in the first frame, then use a 2D tracker to maintain IDs across views in subsequent frames. We achieve comparable accuracy to a state of the art 3D pose estimator in terms of median error and Percentage of Correct Keypoints. Additionally, we benchmark the inference speed of 3D-MuPPET, with up to 9.45 fps in 2D and 1.89 fps in 3D, and perform quantitative tracking evaluation, which yields encouraging results. Finally, we showcase two novel applications for 3D-MuPPET. First, we train a model with data of single pigeons and achieve comparable results in 2D and 3D posture estimation for up to 5 pigeons. Second, we show that 3D-MuPPET also works in outdoors without additional annotations from natural environments. Both use cases simplify the domain shift to new species and environments, largely reducing annotation effort needed for 3D posture tracking. To the best of our knowledge we are the first to present a framework for 2D/3D animal posture and trajectory tracking that works in both indoor and outdoor environments for up to 10 individuals. We hope that the framework can open up new opportunities in studying animal collective behaviour and encourages further developments in 3D multi-animal posture tracking. LA - English DB - MTMT ER - TY - JOUR AU - Slíz, Judit AU - Mádai, Attila AU - Sári, Pál AU - Barta, András AU - Horváth, Gábor TI - Observation of the L5 Kordylewski dust cloud with a portable imaging polarimetric telescope in the Namibian Khomas Highland JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY J2 - MON NOT R ASTRON SOC VL - 530 PY - 2024 IS - 4 SP - 3570 EP - 3577 PG - 8 SN - 0035-8711 DO - 10.1093/mnras/stae1062 UR - https://m2.mtmt.hu/api/publication/34848329 ID - 34848329 AB - The Kordylewski dust clouds (KDCs) around the L5 and L4 Lagrange points of the Earth–Moon system have been first observed by imaging polarimetry in 2017 and 2022 in a Hungarian astronomical observatory. Due to the non-ideal (almost always hazy, aerosol-polluted) astroclimate of Hungary and the extremely low intensity of dust-scattered sunlight, the polarimetric hunt after both KDCs lasted 2–7 yr. Waiting for cloud- and aerosol-free atmosphere and appropriate astronomical conditions (e.g. moonless sky with above-horizon KDC) in our Hungarian observatory takes a long time. Thus, our goal was to build a portable imaging polarimetric, wide field-of-view telescope and use it in the very good astroclimate of the Isabis Astro Lodge in the Khomas Highland of Namibia. Our long term aim is to study the dynamics of KDCs with this instrument in Namibian 1-month astropolarimetric campaigns in the next decade. In this work, we describe our portable imaging polarimetric telescope and present our first KDC observation achieved with it in Namibia during our 4-week astropolarimetric campaign between 2023 July 18 and August 15. We conclude that our portable polarimetric telescope functions well. Using it in Namibia, we corroborated the existence of the L5 KDC, the polarization characteristics (polarization degree and angle) of which refer to an inhomogeneous dust cloud composed of several particle agglomerations that scatter and linearly polarize the illuminating sunlight. LA - English DB - MTMT ER - TY - JOUR AU - Balogh, Gáspár Sámuel AU - Palla, Gergely TI - Intra-community link formation and modularity in ultracold growing hyperbolic networks JF - PHYSICA A - STATISTICAL MECHANICS AND ITS APPLICATIONS J2 - PHYSICA A VL - 642 PY - 2024 PG - 19 SN - 0378-4371 DO - 10.1016/j.physa.2024.129784 UR - https://m2.mtmt.hu/api/publication/34847239 ID - 34847239 LA - English DB - MTMT ER - TY - JOUR AU - Derényi, Imre AU - Demeter, Márton Csaba AU - Pérez-Jiménez, Mario AU - Grajzel, Dániel AU - Szöllősi, Gergely TI - How mutation accumulation depends on the structure of the cell lineage tree JF - PHYSICAL REVIEW E: COVERING STATISTICAL NONLINEAR BIOLOGICAL AND SOFT MATTER PHYSICS (2016-) J2 - PHYSICAL REVIEW E VL - 109 PY - 2024 IS - 4 SN - 2470-0045 DO - 10.1103/PhysRevE.109.044407 UR - https://m2.mtmt.hu/api/publication/34787542 ID - 34787542 LA - English DB - MTMT ER - TY - JOUR AU - Eskandari, Somayeh AU - Koltai, János AU - László, István AU - Kürti, Jenő TI - Molecular Dynamics Study of Nanoribbon Formation by Encapsulating Cyclic Hydrocarbon Molecules inside Single-Walled Carbon Nanotube JF - NANOMATERIALS J2 - NANOMATERIALS-BASEL VL - 14 PY - 2024 IS - 7 PG - 19 SN - 2079-4991 DO - 10.3390/nano14070627 UR - https://m2.mtmt.hu/api/publication/34777533 ID - 34777533 N1 - Export Date: 10 May 2024 AB - Carbon nanotubes filled with organic molecules can serve as chemical nanoreactors. Recent experimental results show that, by introducing cyclic hydrocarbon molecules inside carbon nanotubes, they can be transformed into nanoribbons or inner tubes, depending on the experimental conditions. In this paper, we present our results obtained as a continuation of our previous molecular dynamics simulation work. In our previous work, the initial geometry consisted of independent carbon atoms. Now, as an initial condition, we have placed different molecules inside a carbon nanotube (18,0): C5H5 (fragment of ferrocene), C5, C5+H2; C6H6 (benzene), C6, C6+H2; C20H12 (perylene); and C24H12 (coronene). The simulations were performed using the REBO-II potential of the LAMMPS software package, supplemented with a Lennard-Jones potential between the nanotube wall atoms and the inner atoms. The simulation proved difficult due to the slow dynamics of the H abstraction. However, with a slight modification of the parameterization, it was possible to model the formation of carbon nanoribbons inside the carbon nanotube. LA - English DB - MTMT ER - TY - JOUR AU - Horváth, Lilla AU - Biri-Kovács, Beáta AU - Baranyai, Zsuzsa AU - Stipsicz, Bence András AU - Méhes, Előd AU - Jezsó, Bálint AU - Krátký, Martin AU - Vinšová, Jarmila AU - Bősze, Szilvia TI - New Salicylanilide Derivatives and Their Peptide Conjugates as Anticancer Compounds: Synthesis, Characterization, and In Vitro Effect on Glioblastoma JF - ACS OMEGA J2 - ACS OMEGA VL - 9 PY - 2024 IS - 15 SP - 16927 EP - 16948 PG - 22 SN - 2470-1343 DO - 10.1021/acsomega.3c05727 UR - https://m2.mtmt.hu/api/publication/34777528 ID - 34777528 N1 - Funding Agency and Grant Number: National Research, Development and Innovation Office, Hungary [VEKOP-2.3.3-15-2017-00020, TKP2020-IKA-05]; EFSA-CDN [CZ.02.1.01/0.0/0.0/16_019/0000841]; ERDF; SVV [260 661]; Hungarian Ministry for Innovation and Technology [2018-1.2.1-NKP-2018-00005, 2018-1.2.1-NKP]; National Research, Development and Innovation Office, Hungary (NKFIH); NKFIH [K142904]; New National Excellence Program of the Ministry for Culture and Innovation National Research, Development and Innovation Fund [UNKP-22-4]; Doctoral School of Biology, Institute of Biology, Eotvos Lorand University Funding text: The authors are grateful for the support of the National Research, Development and Innovation Office, Hungary (grants: VEKOP-2.3.3-15-2017-00020 and TKP2020-IKA-05). This work was supported by the EFSA-CDN (grant no. CZ.02.1.01/0.0/0.0/16_019/0000841) and cofunded by the ERDF and SVV 260 661. We are grateful for the ELTE Thematic Excellence Programme (Szint+) and the 2018-1.2.1-NKP-2018-00005 project (under the 2018-1.2.1-NKP funding scheme) provided by the Hungarian Ministry for Innovation and Technology and the National Research, Development and Innovation Office, Hungary (NKFIH). We are also grateful for the support of K142904 (PI: SB, NKFIH), and LBH is grateful for the support of the UNKP-22-4 New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research, Development and Innovation Fund. BS is grateful for the support of the Doctoral School of Biology, Institute of Biology, Eotvos Lorand University. LA - English DB - MTMT ER - TY - JOUR AU - Takács, Péter AU - Száz, Dénes AU - Bernáth, Balázs AU - István, Pomozi AU - Horváth, Gábor TI - Polarized light pollution of fixed-tilt photovoltaic solar panels measured by drone-polarimetry and its visual-ecological importance. JF - REMOTE SENSING J2 - REMOTE SENS-BASEL VL - 16 PY - 2024 IS - 3 SP - article 1177 + 17 pages electronic supplement SN - 2072-4292 UR - https://m2.mtmt.hu/api/publication/34761073 ID - 34761073 LA - English DB - MTMT ER - TY - JOUR AU - Asztalos, Bogdán AU - Palla, Gergely AU - Czégel, Dániel TI - Anomalous diffusion analysis of semantic evolution in major Indo-European languages JF - PLOS ONE J2 - PLOS ONE VL - 19 PY - 2024 IS - 3 PG - 18 SN - 1932-6203 DO - 10.1371/journal.pone.0298650 UR - https://m2.mtmt.hu/api/publication/34758328 ID - 34758328 AB - How do words change their meaning? Although semantic evolution is driven by a variety of distinct factors, including linguistic, societal, and technological ones, we find that there is one law that holds universally across five major Indo-European languages: that semantic evolution is subdiffusive. Using an automated pipeline of diachronic distributional semantic embedding that controls for underlying symmetries, we show that words follow stochastic trajectories in meaning space with an anomalous diffusion exponent α = 0.45 ± 0.05 across languages, in contrast with diffusing particles that follow α = 1. Randomization methods indicate that preserving temporal correlations in semantic change directions is necessary to recover strongly subdiffusive behavior; however, correlations in change sizes play an important role too. We furthermore show that strong subdiffusion is a robust phenomenon under a wide variety of choices in data analysis and interpretation, such as the choice of fitting an ensemble average of displacements or averaging best-fit exponents of individual word trajectories. LA - English DB - MTMT ER - TY - JOUR AU - Mezei, Tamás AU - Báskay, J AU - Pollner, Péter AU - Kovács, V AU - Markia, B AU - Nagy, Gábor AU - Bajcsay, András AU - Sipos, László TI - A pineális régió tumorainak idegsebészeti ellátása – irodalmi áttekintés és az OMIII beteganyagának vizsgálata JF - MAGYAR ONKOLÓGIA J2 - MAGYAR ONKOLÓGIA VL - 68 PY - 2024 IS - 1 SP - 27 EP - 35 PG - 9 SN - 0025-0244 UR - https://m2.mtmt.hu/api/publication/34738293 ID - 34738293 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Horváth, Gábor AU - Slíz, Judit AU - Mádai, Attila AU - Sári, Pál AU - Mitró, Ilona TI - Csillagászati mérőkampány Namíbiában. 1. rész: Polarizációs porholdvadászat. JF - TERMÉSZET VILÁGA J2 - TERMÉSZET VILÁGA VL - 155 (3) PY - 2024 SP - 98 EP - 103 + borító belső SN - 0040-3717 UR - https://m2.mtmt.hu/api/publication/34732165 ID - 34732165 LA - Hungarian DB - MTMT ER -