50,941 results on '"Miklós A"'
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2. The reduction of working time: definitions and measurement methods
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Bence Lukács and Miklós Antal
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Working hours ,paid work ,unpaid work ,working time indicator ,four-day workweek ,post-growth ,Social sciences (General) ,H1-99 - Abstract
Working time reduction (WTR) is a promising policy to enhance well-being in rich countries and an important topic in discourses on a new social vision. Numerous small-scale WTR trials are either underway or planned in various contexts. Properly measuring changes in working time is necessary to evaluate these trials, but challenges abound. Traditional definitions and measurement methods may not work for fragmented, creative, and location-independent jobs. The primary aim of this article is to review relevant work-time definitions and data-collection methods, discuss their complexities, and summarize the implications for WTR research. We reviewed 243 articles and categorize indicators currently used in the literature by relying on 45 methodological studies to identify the main challenges and potential solutions. We conclude that the most dominant definitions and methods, notably usual weekly hours measured by worker surveys, are losing relevance and credibility in many contexts. With the rise of indicators focused on actual hours and measured by time diaries, work grids, interviews, automatic measurements, and time-sampling, we foresee the emergence of non-comparable, job-specific work-time indicators. We propose a new time-sampling approach to deal with some of the least measurable jobs.
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- 2022
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3. Spectroscopic evidence for engineered hadronic bound state formation in repulsive fermionic SU(N) Hubbard systems
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Miklós Antal Werner, Cătălin Paşcu Moca, Márton Kormos, Örs Legeza, Balázs Dóra, and Gergely Zaránd
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Physics ,QC1-999 - Abstract
Particle formation represents a central theme in various branches of physics, often associated to confinement. Here we show that dynamical hadron formation can be spectroscopically detected in an ultracold atomic setting within the most paradigmatic and simplest model of condensed matter physics, the repulsive SU(N) Hubbard model. By starting from an appropriately engineered high-energy initial state of the strongly interacting SU(3) Hubbard model, doublons (mesons) and trions (barions) naturally emerge during time evolution and thermalize to a negative temperature quantum gas, as demonstrated by extensive one-dimensional simulations and exact diagonalization calculations. For strong interactions, trions become heavy and attract each other strongly. Their residual interaction with doublons generates doublon diffusion, as captured by the evolution of the equal time density correlation function. Although our numerical calculations are performed on one-dimensional chains, many of our conclusions extend to a large variety of initial conditions and hold for other spatial dimensions and all SU(N>2) Hubbard models.
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- 2023
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4. With Nanoplasmonics towards Fusion
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Tamás Sándor Biró, Norbert Kroó, László Pál Csernai, Miklós Veres, Márk Aladi, István Papp, Miklós Ákos Kedves, Judit Kámán, Ágnes Nagyné Szokol, Roman Holomb, István Rigó, Attila Bonyár, Alexandra Borók, Shireen Zangana, Rebeka Kovács, Nóra Tarpataki, Mária Csete, András Szenes, Dávid Vass, Emese Tóth, Gábor Galbács, and Melinda Szalóki
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fusion ,plasmonics ,nanotechnology ,energy production ,Elementary particle physics ,QC793-793.5 - Abstract
A status report is presented about the Nanoplasmonic Laser Induced Fusion Experiment (NAPLIFE). The goal is to investigate and verify plasmonically enhanced phenomena on the surfaces of nanoantennas embedded in a polymer target at laser intensities up to a few times 1016 W/cm2 and pulse durations of 40–120 fs. The first results on enhanced crater formation for Au-doped polymer targets are shown, and SERS signals typical for CD2 and ND bound vibrations are cited. Trials to detect D/H ratio by means of LIBS measurments are reported. Plasmonics has the potential to work at these intensities, enhancing the energy and deuterium production, due to thus far unknown mechanisms.
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- 2023
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5. Efficient computation of cumulant evolution and full counting statistics: application to infinite temperature quantum spin chains
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Valli, Angelo, Moca, Cătălin Paşcu, Werner, Miklós Antal, Kormos, Márton, Krajnik, Žiga, Prosen, Tomaž, and Zaránd, Gergely
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Condensed Matter - Statistical Mechanics ,Quantum Physics - Abstract
We propose a numerical method to efficiently compute quantum generating functions (QGF) for a wide class of observables in one-dimensional quantum systems at high temperature. We obtain high-accuracy estimates for the cumulants and reconstruct full counting statistics from the QGF. We demonstrate its potential on spin $S=1/2$ anisotropic Heisenberg chain, where we can reach time scales hitherto inaccessible to state-of-the-art classical and quantum simulations. Our results challenge the conjecture of the Kardar--Parisi--Zhang universality for isotropic integrable quantum spin chains., Comment: 7 pages, 3 figures plus Supporting Information
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- 2024
6. pyPCG: A Python Toolbox Specialized for Phonocardiography Analysis
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Müller, Kristóf, Hatvani, Janka, Koller, Miklós, and Goda, Márton Áron
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Electrical Engineering and Systems Science - Signal Processing - Abstract
Phonocardiography has recently gained popularity in low-cost and remote monitoring, including passive fetal heart monitoring. Development for methods which analyse phonocardiographical data try to capitalize on this opportunity, and in recent years a multitude of such algorithms and models have been published. Although there is little to no standardization in these published algorithms and multiple parts of these models have to be reimplemented on a case-by-case basis. Datasets containing heart sound recordings also lack standardization in both data storage and labeling, especially in fetal phonocardiography. We are presenting a toolbox that can serve as a basis for a future standard framework for heart sound analysis. This toolbox contains some of the most widely used processing steps, and with these, complex analysis processes can be created. These functions can be individually tested. Due to the interdependence of the steps, we validated the current segmentation stage using a manually labeled fetal phonocardiogram dataset comprising 50 one-minute abdominal PCG recordings, which include 6,758 S1 and 6,729 S2 labels. Our results were compared to other common and available segmentation methods, peak detection with the Neurokit2 library, and the Hidden Semi-Markov Model by Springer et al. With a 30 ms tolerance our best model achieved a 97.1% F1 score and 10.8 +/- 7.9 ms mean absolute error for S1 detection. This detection accuracy outperformed all tested methods. With this a more accurate S2 detection method can be created as a multi-step process. After an accurate segmentation the extracted features should be representative of the selected segments, which allows for more accurate statistics or classification models. The toolbox contains functions for both feature extraction and statistics creation which are compatible with the previous steps., Comment: 25 pages, 11 figures, submitted to Open Source and Validated Computational Tools for Physiological Time Series Analysis, for associated program documentation, see https://pypcg-toolbox.readthedocs.io/en/latest/
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- 2024
7. B-colorings of planar and outerplanar graphs
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Martin, Ryan R., Ruszinkó, Miklós, and Sárközy, Gábor N.
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Mathematics - Combinatorics ,05C15, 05C10, 05C35 - Abstract
A coloring of the edges of a graph $G$ in which every $K_{1,2}$ is totally multicolored is known as a proper coloring and a coloring of the edges of $G$ in which every $K_{1,2}$ and every $K_{2,2}$ is totally multicolored is called a B-coloring. In this paper, we establish that a planar graph with maximum degree $\Delta$ can be B-colored with $\max\{2\Delta,32\}$ colors. This is best-possible for large $\Delta$ because $K_{2,\Delta}$ requires $2\Delta$ colors. In addition, there is an example with $\Delta=4$ that requires $12$ colors. We also establish that an outerplanar graph with maximum degree $\Delta$ can be B-colored with $\max\{\Delta,6\}$ colors. This is almost best-possible because $\Delta$ colors are necessary and there is an example with $\Delta=4$ that requires $5$ colors., Comment: 15 pages, 4 figures
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- 2024
8. Proper edge colorings of planar graphs with rainbow $C_4$-s
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Gyárfás, András, Martin, Ryan R., Ruszinkó, Miklós, and Sárközy, Gábor N.
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Mathematics - Combinatorics - Abstract
We call a proper edge coloring of a graph $G$ a B-coloring if every 4-cycle of $G$ is colored with four different colors. Let $q_B(G)$ denote the smallest number of colors needed for a B-coloring of $G$. Motivated by earlier papers on B-colorings, here we consider $q_B(G)$ for planar and outerplanar graphs in terms of the maximum degree $\Delta = \Delta(G)$. We prove that $q_B(G)\le 2\Delta+8$ for planar graphs, $q_B(G)\le 2\Delta$ for bipartite planar graphs and $q_B(G)\le \Delta+1$ for outerplanar graphs with $\Delta \ge 4$. We conjecture that, for $\Delta$ sufficiently large, $q_B(G)\le 2\Delta(G)$ for planar $G$ and $q_B(G)\le \Delta(G)$ for outerplanar $G$., Comment: 15 pages, 4 figures, to appear in Journal of Graph Theory
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- 2024
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9. Septin7 is indispensable for proper skeletal muscle architecture and function
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Mónika Gönczi, Zsolt Ráduly, László Szabó, János Fodor, Andrea Telek, Nóra Dobrosi, Norbert Balogh, Péter Szentesi, Gréta Kis, Miklós Antal, György Trencsenyi, Beatrix Dienes, and László Csernoch
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septins ,cytoskeleton ,skeletal muscle ,mitochondria ,development ,regeneration ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
Today septins are considered as the fourth component of the cytoskeleton, with the Septin7 isoform playing a critical role in the formation of higher-order structures. While its importance has already been confirmed in several intracellular processes of different organs, very little is known about its role in skeletal muscle. Here, using Septin7 conditional knockdown (KD) mouse model, the C2C12 cell line, and enzymatically isolated adult muscle fibers, the organization and localization of septin filaments are revealed, and an ontogenesis-dependent expression of Septin7 is demonstrated. KD mice displayed a characteristic hunchback phenotype with skeletal deformities, reduction in in vivo and in vitro force generation, and disorganized mitochondrial networks. Furthermore, knockout of Septin7 in C2C12 cells resulted in complete loss of cell division while KD cells provided evidence that Septin7 is essential for proper myotube differentiation. These and the transient increase in Septin7 expression following muscle injury suggest that it may be involved in muscle regeneration and development.
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- 2022
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10. 100 ÉVES A DEBRECENI EGYETEM ÁLTALÁNOS ORVOSTUDOMÁNYI KAR ANATÓMIAI, SZÖVET- ÉS FEJLŐDÉSTANI INTÉZETE
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Miklós Antal
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Anatómia Szövet-és Fejlődlstani Intézet Debreceni Egyetem történeti áttekintés kutatás oktatás nevelés ,History of education ,LA5-2396 - Abstract
A Debreceni Egyetem Általános Orvostudományi Kar Anatómiai, Szövet- és Fejlődéstani Intézete, a Debreceni Akadémiai Bizottság Idegtudományi, Sejt- és Fejlődésbiológiai Munkabizottságával közösen ünnepi ülést rendezett az Intézet megalapításának 100 éves évfordulójának tiszteletére. Az ünnepi ülésre a Debreceni Akadémiai Bizottság nagy előadótermében került sor 2021. október 14-én 14:00 órai kezdettel. Dr. Mátyus László, egyetemi tanár, a Debreceni Egyetem Általános Orvostudományi Kar dékánja, és Dr. Reglődi Dóra egyetemi tanár, a Magyar Anatómus Társaság elnöke ünnepi köszöntői után az intézet jelenlegi és volt munkatársai idézték fel az intézet 100 éves történetét, és emlékeztek az intézetben eltöltött évek boldog pillanataira, az intézet inspiráló tudományos atmoszférájára. Az intézet volt munkatársai beszámoltak arról is hogyan alakult az életük, tudományos munkásságuk miután elkerültek az intézetből. A következőkben röviden összefoglalva ismertetjük az ünnepi ülésen elhangzott előadásokat az ülés programjának sorrendjében.
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- 2022
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11. Synaptic Targets of Glycinergic Neurons in Laminae I–III of the Spinal Dorsal Horn
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Camila Oliveira Miranda, Krisztina Hegedüs, Gréta Kis, and Miklós Antal
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glycine ,spinal dorsal horn ,pain processing neural circuits ,transgenic animals ,immunocytochemistry ,in situ hybridization ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
A great deal of evidence supports the inevitable importance of spinal glycinergic inhibition in the development of chronic pain conditions. However, it remains unclear how glycinergic neurons contribute to the formation of spinal neural circuits underlying pain-related information processing. Thus, we intended to explore the synaptic targets of spinal glycinergic neurons in the pain processing region (laminae I–III) of the spinal dorsal horn by combining transgenic technology with immunocytochemistry and in situ hybridization accompanied by light and electron microscopy. First, our results suggest that, in addition to neurons in laminae I–III, glycinergic neurons with cell bodies in lamina IV may contribute substantially to spinal pain processing. On the one hand, we show that glycine transporter 2 immunostained glycinergic axon terminals target almost all types of excitatory and inhibitory interneurons identified by their neuronal markers in laminae I–III. Thus, glycinergic postsynaptic inhibition, including glycinergic inhibition of inhibitory interneurons, must be a common functional mechanism of spinal pain processing. On the other hand, our results demonstrate that glycine transporter 2 containing axon terminals target only specific subsets of axon terminals in laminae I–III, including nonpeptidergic nociceptive C fibers binding IB4 and nonnociceptive myelinated A fibers immunoreactive for type 1 vesicular glutamate transporter, indicating that glycinergic presynaptic inhibition may be important for targeting functionally specific subpopulations of primary afferent inputs.
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- 2023
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12. The Effect of Femtosecond Laser Irradiation and Plasmon Field on the Degree of Conversion of a UDMA-TEGDMA Copolymer Nanocomposite Doped with Gold Nanorods
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Attila Bonyár, Melinda Szalóki, Alexandra Borók, István Rigó, Judit Kámán, Shereen Zangana, Miklós Veres, Péter Rácz, Márk Aladi, Miklós Ákos Kedves, Ágnes Szokol, Péter Petrik, Zsolt Fogarassy, Kolos Molnár, Mária Csete, András Szenes, Emese Tóth, Dávid Vas, István Papp, Gábor Galbács, László P. Csernai, Tamás S. Biró, Norbert Kroó, and NAPLIFE Collaboration
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nanocomposite ,UDMA ,plasmonics ,femtosecond laser ,nanorod ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
In this work, the effects of femtosecond laser irradiation and doping with plasmonic gold nanorods on the degree of conversion (DC) of a urethane dimethacrylate (UDMA)–triethylene glycol dimethacrylate (TEGDMA) nanocomposite were investigated. The UDMA-TEGDMA photopolymer was prepared in a 3:1 weight ratio and doped with dodecanethiol- (DDT) capped gold nanorods of 25 × 75 or 25 × 85 nm nominal diameter and length. It was found that the presence of the gold nanorods alone (without direct plasmonic excitation) can increase the DC of the photopolymer by 6–15%. This increase was found to be similar to what could be achieved with a control heat treatment of 30 min at 180 °C. It was also shown that femtosecond laser impulses (795 nm, 5 mJ pulse energy, 50 fs pulse length, 2.83 Jcm−2 fluence), applied after the photopolymerization under a standard dental curing lamp, can cause a 2–7% increase in the DC of undoped samples, even after thermal pre-treatment. The best DC values (12–15% increase) were obtained with combined nanorod doping and subsequent laser irradiation close to the plasmon resonance peak of the nanorods (760–800 nm), which proves that the excited plasmon field can directly facilitate double bond breakage (without thermoplasmonic effects due to the short pulse length) and increase the crosslink density independently from the initial photopolymerization process.
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- 2022
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13. Asymptotic geometry of non-abelian Hodge theory and Riemann--Hilbert correspondence, rank three $\widetilde{E}_6$ case
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Eper, Miklos and Szabo, Szilard
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Mathematics - Algebraic Geometry ,14H60, 14M35, 53C07, 30E15, 32S40 - Abstract
We prove the Geometric P=W conjecture in rank 3 on the three-punctured sphere. We describe the topology at infinity of the related character variety. We use asymptotic abelianization of harmonic bundles away from the ramification divisor and an equivariant approach near the branch points to find the WKB (also known as Liouville--Green or phase-integral) expansion of the involved maps. We analyze the Stokes phenomenon governing their behavior., Comment: 66 pages, 7 figures; v2: expanded Section 6
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- 2024
14. TU-games with utilities: the prenucleolus and its characterization set
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Dornai, Zsófia and Pintér, Miklós
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Mathematics - Optimization and Control ,91A12 - Abstract
TU-games with utility functions are considered. Generalizations of the prenucleolus, essential coalitions and the core: the u-prenucleolus, u-essential coalitions and the u-core respectively are introduced. We show that u-essential coalitions form a characterisation set for the u-prenucleolus in case of games with nonempty u-core.
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- 2024
15. On the dynamical Lie algebras of quantum approximate optimization algorithms
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Allcock, Jonathan, Santha, Miklos, Yuan, Pei, and Zhang, Shengyu
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Quantum Physics - Abstract
Dynamical Lie algebras (DLAs) have emerged as a valuable tool in the study of parameterized quantum circuits, helping to characterize both their expressiveness and trainability. In particular, the absence or presence of barren plateaus (BPs) -- flat regions in parameter space that prevent the efficient training of variational quantum algorithms -- has recently been shown to be intimately related to quantities derived from the associated DLA. In this work, we investigate DLAs for the quantum approximate optimization algorithm (QAOA), one of the most studied variational quantum algorithms for solving graph MaxCut and other combinatorial optimization problems. While DLAs for QAOA circuits have been studied before, existing results have either been based on numerical evidence, or else correspond to DLA generators specifically chosen to be universal for quantum computation on a subspace of states. We initiate an analytical study of barren plateaus and other statistics of QAOA algorithms, and give bounds on the dimensions of the corresponding DLAs and their centers for general graphs. We then focus on the $n$-vertex cycle and complete graphs. For the cycle graph we give an explicit basis, identify its decomposition into the direct sum of a $2$-dimensional center and a semisimple component isomorphic to $n-1$ copies of $su(2)$. We give an explicit basis for this isomorphism, and a closed-form expression for the variance of the cost function, proving the absence of BPs. For the complete graph we prove that the dimension of the DLA is $O(n^3)$ and give an explicit basis for the DLA.
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- 2024
16. Counting pairs of cycles whose product is a permutation with restricted cycle lengths
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Bona, Miklos and Pittel, Boris
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Mathematics - Combinatorics ,05E10, 60C05 - Abstract
We find exact and asymptotic formulas for the number of pairs $(p,q)$ of $N$-cycles such that the all cycles of the product $p\cdot q$ have lengths from a given integer set. We then apply these results to prove a surprisingly high lower bound for the number of permutations whose block transposition distance from the identity is at least $(n+1)/2$., Comment: 15 pages
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- 2024
17. Polynomial Time Algorithms for Integer Programming and Unbounded Subset Sum in the Total Regime
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Aggarwal, Divesh, Joux, Antoine, Santha, Miklos, and Węgrzycki, Karol
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Computer Science - Data Structures and Algorithms - Abstract
The Unbounded Subset Sum (USS) problem is an NP-hard computational problem where the goal is to decide whether there exist non-negative integers $x_1, \ldots, x_n$ such that $x_1 a_1 + \ldots + x_n a_n = b$, where $a_1 < \cdots < a_n < b$ are distinct positive integers with $\text{gcd}(a_1, \ldots, a_n)$ dividing $b$. The problem can be solved in pseudopolynomial time, while specialized cases, such as when $b$ exceeds the Frobenius number of $a_1, \ldots, a_n$ simplify to a total problem where a solution always exists. This paper explores the concept of totality in USS. The challenge in this setting is to actually find a solution, even though we know its existence is guaranteed. We focus on the instances of USS where solutions are guaranteed for large $b$. We show that when $b$ is slightly greater than the Frobenius number, we can find the solution to USS in polynomial time. We then show how our results extend to Integer Programming with Equalities (ILPE), highlighting conditions under which ILPE becomes total. We investigate the diagonal Frobenius number, which is the appropriate generalization of the Frobenius number to this context. In this setting, we give a polynomial-time algorithm to find a solution of ILPE. The bound obtained from our algorithmic procedure for finding a solution almost matches the recent existential bound of Bach, Eisenbrand, Rothvoss, and Weismantel (2024)., Comment: 12 pages
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- 2024
18. The filter of interpretability types of Hobby-McKenzie varieties is prime
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Bodor, Bertalan, Gyenizse, Gergő, Maróti, Miklós, and Zádori, László
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Mathematics - Combinatorics ,03C05 08B05 - Abstract
We study the Hobby-McKenzie varieties that constitute a major class investigated thoroughly in the monograph The shape of congruence lattices by Kearnes and Kiss. We obtain new characterizations of the Hobby-McKenzie varieties via compatible reflexive ternary structures. Based on our findings, we prove that in the lattice of interpretability types of varieties, the filter of the interpretability types of Hobby-McKenzie varieties is prime., Comment: arXiv admin note: text overlap with arXiv:2307.12902
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- 2024
19. Exploring the interplay between mass-energy equivalence, interactions and entanglement in an optical lattice clock
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Chu, Anjun, Martínez-Lahuerta, Victor J., Miklos, Maya, Kim, Kyungtae, Zoller, Peter, Hammerer, Klemens, Ye, Jun, and Rey, Ana Maria
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Quantum Physics ,Condensed Matter - Quantum Gases ,General Relativity and Quantum Cosmology ,Physics - Atomic Physics - Abstract
We propose protocols that probe manifestations of the mass-energy equivalence in an optical lattice clock (OLC) interrogated with spin coherent and entangled quantum states. To tune and uniquely distinguish the mass-energy equivalence effects (gravitational redshift and second order Doppler shift) in such setting, we devise a dressing protocol using an additional nuclear spin state. We then analyze the interplay between photon-mediated interactions and gravitational redshift and show that such interplay can lead to entanglement generation and frequency synchronization. In the regime where all atomic spins synchronize, we show the synchronization time depends on the initial entanglement of the state and can be used as a proxy of its metrological gain compared to a classical state. Our work opens new possibilities for exploring the effects of general relativity on quantum coherence and entanglement in OLC experiments., Comment: 7+17 pages, 4+6 figures
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- 2024
20. Global fermionic mode optimization via swap gates
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Friesecke, Gero, Werner, Miklós Antal, Kapás, Kornél, Menczer, Andor, and Legeza, Örs
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Condensed Matter - Strongly Correlated Electrons ,Quantum Physics - Abstract
We propose a general approach to find an optimal representation of a quantum many body wave function for a given error margin via global fermionic mode optimization. The stationary point on a fixed rank matrix product state manifold is obtained via a joint optimization on the Grassman manifold [Phys. Rev. Lett. 117, 210402] together with swap gates controlled permutations. The minimization of the global quantity, the block entropy area, guarantees that the method fulfills all criteria with respect to partial derivatives. Numerical results via large scale density matrix renormalization group simulations on strongly correlated molecular systems and two-dimensional fermionic lattice models are discussed., Comment: 5 pages, 4 figures
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- 2024
21. Fully graphic degree sequences and P-stable degree sequences
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Erdős, Péter L., Miklós, István, and Soukup, Lajos
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Mathematics - Combinatorics ,Computer Science - Discrete Mathematics ,05C99, 05C75 - Abstract
The notion of $P$-stability of an infinite set of degree sequences plays influential role in approximating the permanents, rapidly sampling the realizations of graphic degree sequences, or even studying and improving network privacy. While there exist several known sufficient conditions for $P$-stability, we don't know any useful necessary condition for it. We also do not have good insight of possible structure of $P$-stable degree sequence families. At first we will show that every known infinite $P$-stable degree sequence set, described by inequalities of the parameters $n, c_1, c_2, \Sigma$ (the sequence length, the maximum and minimum degrees and the sum of the degrees) is ,,fully graphic" meaning that every degree sequence from the region with an even degree sum, is graphic. Furthermore, if $\Sigma$ does not occur in the determining inequality, then the notions of $P$-stability and full graphicality will be proved equivalent. In turns, this equality provides a strengthening of the well-known theorem of Jerrum, McKay and Sinclair about $P$-stability, describing the maximal $P$-stable sequence set by $n, c_1, c_2$. Furthermore we conjecture that similar equivalences occur in cases if $\Sigma$ also part of the defining inequality., Comment: 23 pages, 1 figure
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- 2024
22. Beyond Bell sampling: stabilizer state learning and quantum pseudorandomness lower bounds on qudits
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Allcock, Jonathan, Doriguello, Joao F., Ivanyos, Gábor, and Santha, Miklos
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Quantum Physics ,Computer Science - Computational Complexity ,Computer Science - Data Structures and Algorithms - Abstract
Bell sampling is a simple yet powerful measurement primitive that has recently attracted a lot of attention, and has proven to be a valuable tool in studying stabiliser states. Unfortunately, however, it is known that Bell sampling fails when used on qu\emph{d}its of dimension $d>2$. In this paper, we explore and quantify the limitations of Bell sampling on qudits, and propose new quantum algorithms to circumvent the use of Bell sampling in solving two important problems: learning stabiliser states and providing pseudorandomness lower bounds on qudits. More specifically, as our first result, we characterise the output distribution corresponding to Bell sampling on copies of a stabiliser state and show that the output can be uniformly random, and hence reveal no information. As our second result, for $d=p$ prime we devise a quantum algorithm to identify an unknown stabiliser state in $(\mathbb{C}^p)^{\otimes n}$ that uses $O(n)$ copies of the input state and runs in time $O(n^4)$. As our third result, we provide a quantum algorithm that efficiently distinguishes a Haar-random state from a state with non-negligible stabiliser fidelity. As a corollary, any Clifford circuit on qudits of dimension $d$ using $O(\log{n}/\log{d})$ auxiliary non-Clifford single-qudit gates cannot prepare computationally pseudorandom quantum states., Comment: 35 pages
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- 2024
23. Pulsed laser intensity dependence of crater formation and light reflection in the UDMA-TEGDMA copolymer nanocomposite, doped with resonant plasmonic gold nanorods
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Szokol, Ágnes Nagyné, Kámán, Judit, Holomb, Roman, Aladi, Márk, Kedves, Miklós, Ráczkevi, Béla, Rácz, Péter, Bonyár, Attila, Borók, Alexandra, Zangana, Shereen, Szalóki, Melinda, Papp, István, Galbács, Gábor, Biró, Tamás S., Csernai, László P., Kroó, Norbert, Veres, Miklós, and Collaboration, NAPLIFE
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Physics - Optics ,Physics - Plasma Physics - Abstract
Plasmonic nanoparticles embedded into a solid matrix could play crucial role in laser-matter interactions. In this study, excess energy creation was observed during the single-shot irradiation of a polymer matrix containing plasmonic gold nanorods, resonant to the laser wavelength, with a high intensity femtosecond laser pulse. This effect was manifested in a 7-fold rise in the crater volume for a 1.7-fold increase of the laser intensity, and was absent in the pure polymer without the gold doping. It occurred at laser intensities > 1.5 x 1017 W/cm2, being the vanishing threshold of plasma mirror formation, resulting in a more than 80% increase of the amount of laser light entering the target. This threshold was found to be critical for the plasmonic effect of gold nanoantennas tuned to the wavelength of the laser on the crater formation., Comment: 13 pages, 5 figures
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- 2024
24. Zadig, Holmes és Zoltán zászlós, avagy mit bizonyít a nyomozó?
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Miklós Angyal
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kriminalisztika ,nyomozás ,film- és irodalomtörténet ,Political institutions and public administration (General) ,JF20-2112 - Abstract
Visszatérő jogértelmezési kérdés, hogy a bizonyítás csak a bírósági tárgyalás fogalmához köthető-e, avagy abba beletartoznak-e a nyomozati, illetőleg vádszakaszban végrehajtott eljárási cselekmények is. Egyetértek azzal, hogy a kérdésre adott válasz elsősorban a mindenkori büntetőeljárási törvény szabályozási rendszerének a függvénye (Bérces, 2018). Van egy lényegi közös elem ugyanakkor a különböző eljárásokban: a megismerés kívánalma. Ebből viszont az következik, hogy helytelenül vélekedünk a megismerésről, ha azt gondoljuk, hogy – a hatályos Be. értelmezésének megfelelően – a nyomozás szerepe mindösszesen a tények és adatok összegyűjtése, míg maga a bizonyítás a bírói szakban történik. Az emberi megismerés ugyanis alapvetően az érzékelés, az észlelés, az emlékezés, a képzelet és a gondolkodás köré csoportosítható. A gondolkodás pedig magában foglalja az idegrendszeri (és emocionális) folyamatok végeredményeként létrejövő okfejtést, következtetést és döntést is. A jó nyomozó tehát úgy vizsgálódik, úgy kérdez, és úgy elemez, hogy tudja azt, mindannak, amit és ahogyan csinál a végső értelme az, hogy a bírói szakban olyan bizonyíték álljon rendelkezésre, amellyel el lehet oszlatni a kételyeket a büntetőjogilag releváns tények körül. A megismerő tevékenysége tehát, mégha távolról „csak” nyomozati eljárásnak tűnik is, a bizonyítás számos mozzanatát tartalmazza (Tremmel, 2012). A helyes (és persze sok esetben szerencsével is járó) nyomozás amellett, hogy feltárja a múlt valóságát – felkínálva annak minden elemét –, megfelelően alá is támasztja azt, lehetőséget biztosítva arra, hogy a feltárás igazsága – szinte egy az egyben – a megállapított igazság is legyen. A tanulmány célja, hogy a nyomozáshoz és megismeréshez kapcsolódó néhány történelmi, film- és irodalomtörténeti példán keresztül tisztelegjen a 80 éves Tremmel Flórián professzor úr személye, és a témát érintő munkássága előtt.
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- 2021
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25. Tissue Transglutaminase Knock-Out Preadipocytes and Beige Cells of Epididymal Fat Origin Possess Decreased Mitochondrial Functions Required for Thermogenesis
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Kinga Lénárt, Csaba Bankó, Gyula Ujlaki, Szilárd Póliska, Gréta Kis, Éva Csősz, Miklós Antal, Zsolt Bacso, Péter Bai, László Fésüs, and András Mádi
- Subjects
browning ,uncoupling protein-1 ,beige adipocytes ,DIO3 ,SLC25A45 ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Beige adipocytes with thermogenic function are activated during cold exposure in white adipose tissue through the process of browning. These cells, similar to brown adipocytes, dissipate stored chemical energy in the form of heat with the help of uncoupling protein 1 (UCP1). Recently, we have shown that tissue transglutaminase (TG2) knock-out mice have decreased cold tolerance in parallel with lower utilization of their epididymal adipose tissue and reduced browning. To learn more about the thermogenic function of this fat depot, we isolated preadipocytes from the epididymal adipose tissue of wild-type and TG2 knock-out mice and differentiated them in the beige direction. Although differentiation of TG2 knock-out preadipocytes is phenotypically similar to the wild-type cells, the mitochondria of the knock-out beige cells have multiple impairments including an altered electron transport system generating lower electrochemical potential difference, reduced oxygen consumption, lower UCP1 protein content, and a higher portion of fragmented mitochondria. Most of these differences are present in preadipocytes as well, and the differentiation process cannot overcome the functional disadvantages completely. TG2 knock-out beige adipocytes produce more iodothyronine deiodinase 3 (DIO3) which may inactivate thyroid hormones required for the establishment of optimal mitochondrial function. The TG2 knock-out preadipocytes and beige cells are both hypometabolic as compared with the wild-type controls which may also be explained by the lower expression of solute carrier proteins SLC25A45, SLC25A47, and SLC25A42 which transport acylcarnitine, Co-A, and amino acids into the mitochondrial matrix. As a consequence, the mitochondria in TG2 knock-out beige adipocytes probably cannot reach the energy-producing threshold required for normal thermogenic functions, which may contribute to the decreased cold tolerance of TG2 knock-out mice.
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- 2022
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26. Heterozygous Spink1 Deficiency Promotes Trypsin-dependent Chronic Pancreatitis in Mice.
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Demcsák, Alexandra and Sahin-Tóth, Miklós
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Acute Pancreatitis ,Cerulein ,Chronic Pancreatitis ,Trypsin ,Trypsin Inhibitor ,Trypsinogen - Abstract
BACKGROUND & AIMS: Heterozygous SPINK1 mutations are strong risk factors for chronic pancreatitis in humans, yet heterozygous disruption of mouse Spink1 yielded no pancreatic phenotype. To resolve this contradiction, we used CRISPR/Cas9-mediated genome editing to generate heterozygous Spink1-deleted mice (Spink1-KOhet) in the C57BL/6N strain and studied the effect of this allele in trypsin-independent and trypsin-dependent pancreatitis models. METHODS: We investigated severity of acute pancreatitis and progression to chronic pancreatitis in Spink1-KOhet mice after transient (10 injections) and prolonged (2 × 8 injections) cerulein hyperstimulation. We crossed Spink1-KOhet mice with T7D23A and T7D22N,K24R mice that carry strongly autoactivating trypsinogen mutants and exhibit spontaneous chronic pancreatitis. RESULTS: Prolonged but not transient cerulein stimulation resulted in increased intrapancreatic trypsin activity and more severe acute pancreatitis in Spink1-KOhet mice relative to the C57BL/6N control strain. After the acute episode, Spink1-KOhet mice developed progressive disease with chronic pancreatitis-like features, whereas C57BL/6N mice recovered rapidly. Trypsinogen mutant mice carrying the Spink1-KOhet allele exhibited strikingly more severe chronic pancreatitis than the respective parent strains. CONCLUSIONS: Heterozygous Spink1 deficiency caused more severe acute pancreatitis after prolonged cerulein stimulation and promoted chronic pancreatitis after the cerulein-induced acute episode, and in two strains of trypsinogen mutant mice with spontaneous disease. In contrast, acute pancreatitis induced with limited cerulein hyperstimulation was unaffected by heterozygous Spink1 deletion, in agreement with recent observations that trypsin activity does not mediate pathologic responses in this model. Taken together, the findings strongly support the notion that loss-of-function SPINK1 mutations in humans increase chronic pancreatitis risk in a trypsin-dependent manner.
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- 2024
27. Hepatokine ITIH3 protects against hepatic steatosis by downregulating mitochondrial bioenergetics and de novo lipogenesis.
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Sotomayor-Rodriguez, Irene, Rahman, Afra, Péterfy, Miklós, Pajukanta, Päivi, Pihlajamäki, Jussi, Chella Krishnan, Karthickeyan, Talari, Noble, Mattam, Ushodaya, and Kaminska, Dorota
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Biochemistry ,Biological sciences ,Cell biology ,Physiology - Abstract
Recent studies demonstrate that liver secretory proteins, also known as hepatokines, regulate normal development, obesity, and simple steatosis to non-alcoholic steatohepatitis (NASH) progression. Using a panel of ∼100 diverse inbred strains of mice and a cohort of bariatric surgery patients, we found that one such hepatokine, inter-trypsin inhibitor heavy chain 3 (ITIH3), was progressively lower in severe non-alcoholic fatty liver disease (NAFLD) disease states highlighting an inverse relationship between Itih3/ITIH3 expression and NAFLD severity. Follow-up animal and cell culture models demonstrated that hepatic ITIH3 overexpression lowered liver triglyceride and lipid droplet accumulation, respectively. Conversely, ITIH3 knockdown in mice increased the liver triglyceride in two independent NAFLD models. Mechanistically, ITIH3 reduced mitochondrial respiration and this, in turn, reduced liver triglycerides, via downregulated de novo lipogenesis. This was accompanied by increased STAT1 signaling and Stat3 expression, both of which are known to protect against NAFLD/NASH. Our findings indicate hepatokine ITIH3 as a potential biomarker and/or treatment for NAFLD.
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- 2024
28. Solutions to the discrete Pompeiu problem and to the finite Steinhaus tiling problem
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Kiss, Gergely and Laczkovich, Miklós
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Mathematics - Functional Analysis ,Mathematics - Metric Geometry ,Mathematics - Spectral Theory ,30D05, 43A45, 52C99 - Abstract
Let $K$ be a nonempty finite subset of the Euclidean space $\mathbb{R}^k$ $(k\ge 2)$. We prove that if a function $f\colon \mathbb{R}^k\to \mathbb{C}$ is such that the sum of $f$ on every congruent copy of $K$ is zero, then $f$ vanishes everywhere. In fact, a stronger, weighted version is proved. As a corollary we find that every finite subset $K$ of $\mathbb{R}^k$ having at least two elements is a Jackson set; that is, no subset of $\mathbb{R}^k$ intersects every congruent copy of $K$ in exactly one point., Comment: 17 pages
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- 2024
29. Loss-induced quantum information jet in an infinite temperature Hubbard chain
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Penc, Patrik, Moca, Cătălin Paşcu, Legeza, Örs, Prosen, Tomaž, Zaránd, Gergely, and Werner, Miklós Antal
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Statistical Mechanics ,Quantum Physics - Abstract
Information propagation in the one-dimensional infinite temperature Hubbard model with a dissipative particle sink at the end of a semi-infinite chain is studied. In the strongly interacting limit, the two-site mutual information and the operator entanglement entropy exhibit a rich structure with two propagating information fronts and superimposed interference fringes. A classical reversible cellular automaton model quantitatively captures the transport and the slow, classical part of the correlations, but fails to describe the rapidly propagating information jet. The fast quantum jet resembles coherent free particle propagation, with the accompanying long-ranged interference fringes that are exponentially damped by short-ranged spin correlations in the many-body background., Comment: 5 pages, 3 figures, supplemental material included
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- 2024
30. The geopolitics of vaccine media representation in Orbán’s Hungary—an AI-supported sentiment analysis
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Sebők, Miklós, Ring, Orsolya, Kis, Márk György, Bánóczy, Martin Balázs, and Dinnyés, Ágnes
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- 2024
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31. Effects of branched-chain amino acids on changes in body composition during the recovery period following tonsillectomy
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Fritz, Réka, Kiricsi, Ágnes, Csanády, Miklós, and Fritz, Péter
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- 2024
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32. Similar Strains of Coagulase-Negative Staphylococci Found in the Gastrointestinal Tract and Bloodstream of Bacteremic Neonates
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Jennifer O. Adeghate, Emese Juhász, Miklós Á. Iván, Júlia Pongrácz, and Katalin Kristóf
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Infectious and parasitic diseases ,RC109-216 ,Microbiology ,QR1-502 - Abstract
Objectives. Premature neonates are susceptible to opportunistic and nosocomial infections. Efforts have been made to determine whether the neonatal gut microbiome possesses potential for causing bloodstream infections in newborns via microbial translocation from the gastrointestinal tract. We aimed to examine similarities in coagulase-negative staphylococci (CoNS) strains found in the gastrointestinal tract and bloodstream in bacteremic neonates. Methods. CoNS strains isolated from blood cultures and perianal and pharyngeal swab samples of neonates from two neonatal intensive care units were investigated using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and pulsed-field gel electrophoresis. Molecular mass and genetic similarities of CoNS strains were compared. Results. Marked similarity was found in the molecular mass and genetic profile of examined CoNS isolates from blood cultures and perianal/pharyngeal samples. The percentage of neonates developing bacteremia following perianal and pharyngeal colonization by CoNS was significantly higher when compared to those colonized by Enterobacteriales species (p
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- 2020
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33. The ethics of online steering
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Miklós, András and Miklós-Thal, Jeanine
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- 2024
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34. Silencing of Poly(ADP-Ribose) Polymerase-2 Induces Mitochondrial Reactive Species Production and Mitochondrial Fragmentation
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Laura Jankó, Tünde Kovács, Miklós Laczik, Zsanett Sári, Gyula Ujlaki, Gréta Kis, Ibolya Horváth, Miklós Antal, László Vígh, Bálint L. Bálint, Karen Uray, and Péter Bai
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PARP2 ,ARTD2 ,oxidative stress ,mitochondrial biogenesis ,skeletal muscle ,mitochondrial fragmentation ,Cytology ,QH573-671 - Abstract
PARP2 is a DNA repair protein. The deletion of PARP2 induces mitochondrial biogenesis and mitochondrial activity by increasing NAD+ levels and inducing SIRT1 activity. We show that the silencing of PARP2 causes mitochondrial fragmentation in myoblasts. We assessed multiple pathways that can lead to mitochondrial fragmentation and ruled out the involvement of mitophagy, the fusion–fission machinery, SIRT1, and mitochondrial unfolded protein response. Nevertheless, mitochondrial fragmentation was reversed by treatment with strong reductants, such as reduced glutathione (GSH), N-acetyl-cysteine (NAC), and a mitochondria-specific antioxidant MitoTEMPO. The effect of MitoTEMPO on mitochondrial morphology indicates the production of reactive oxygen species of mitochondrial origin. Elimination of reactive oxygen species reversed mitochondrial fragmentation in PARP2-silenced cells.
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- 2021
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35. Towards Optimal Pilot Spacing and Power Control in Multi-Antenna Systems Operating Over Non-Stationary Rician Aging Channels
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Daei, Sajad, Fodor, Gabor, Skoglund, Mikael, and Telek, Miklos
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Electrical Engineering and Systems Science - Signal Processing - Abstract
Several previous works have addressed the inherent trade-off between allocating resources in the power and time domains to pilot and data signals in multiple input multiple output systems over block-fading channels. In particular, when the channel changes rapidly in time, channel aging degrades the performance in terms of spectral efficiency without proper pilot spacing and power control. Despite recognizing non-stationary stochastic processes as more accurate models for time-varying wireless channels, the problem of pilot spacing and power control in multi-antenna systems operating over non-stationary channels is not addressed in the literature. In this paper, we address this gap by introducing a refined first-order autoregressive model that exploits the inherent temporal correlations over non-stationary Rician aging channels. We design a multi-frame structure for data transmission that better reflects the non-stationary fading environment than previously developed single-frame structures. Subsequently, to determine optimal pilot spacing and power control within this multi-frame structure, we develop an optimization framework and an efficient algorithm based on maximizing a deterministic equivalent expression for the spectral efficiency, demonstrating its generality by encompassing previous channel aging results. Our numerical results indicate the efficacy of the proposed method in terms of spectral efficiency gains over the single frame structure.
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- 2024
36. Three Variations on Money Pump, Common Prior, and Trade
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Hellman, Ziv and Pinter, Miklos
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Economics - Theoretical Economics - Abstract
We consider finite information structures, and quest for the answer of the question: What is the proper definition of prior? In the single player setting we conclude that a probability distribution is a prior if it is disintegrable, because this definition excludes money pump. In the multiplayer setting our analysis does not boil down to one proper notion of common prior (the multiplayer version of prior). The appropriate notion is a choice of the modeller in this setting. We consider three variants of money pump, each "defines" a notion of common prior. Furthermore, we also consider three variants of trade, each correspond to one of the money pump variants, hence to one of the common prior variants.
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- 2024
37. Generalized Kripke's Schema and the Expressive Power of Intuitionistic Real Algebra
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Erdélyi-Szabó, Miklós
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Mathematics - Logic ,03-B20, 03-F25, 03-F35, 03-F60 - Abstract
We introduce a relativized version of random Kripke's schema and show how it may be applied in the investigation of the expressive power of intuitionistic real algebra by interpreting second-order Heyting arithmetic in it., Comment: 7 pages
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- 2024
38. Growth dichotomy for unimodular random rooted trees
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Abert, Miklós, Frączyk, Mikołaj, and Hayes, Ben
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Mathematics - Probability ,Mathematics - Combinatorics ,Mathematics - Dynamical Systems ,37A30, 20F65, 05C81, 60K35 - Abstract
We show that the growth of a unimodular random rooted tree $(T,o)$ of degree bounded by $d$ always exists, assuming its upper growth passes the critical threshold $\sqrt{d-1}$. This complements Timar's work who showed the possible nonexistence of growth below this threshold. The proof goes as follows. By Benjamini-Lyons-Schramm, we can realize $(T,o)$ as the cluster of the root for some invariant percolation on the $d$-regular tree. Then we show that for such a percolation, the limiting exponent with which the lazy random walk returns to the cluster of its starting point always exists. We develop a new method to get this, that we call the 2-3-method, as the usual pointwise ergodic theorems do not seem to work here. We then define and prove the Cohen-Grigorchuk co-growth formula to the invariant percolation setting. This establishes and expresses the growth of the cluster from the limiting exponent, assuming we are above the critical threshold., Comment: 20 pages, 4 figure, subset of the previous version of arXiv:2205.06692 which we are splitting into three papers
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- 2023
39. Superpolynomial period lengths of the winning positions in the subtraction game
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Miklós, István and Post, Logan
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Mathematics - Combinatorics ,05A05, 68R15, 91A46 - Abstract
Given a finite set of positive integers, $A$, and starting with a heap of $n$ chips, Alice and Bob alternate turns and on each turn a player chooses $x\in A$ with $x$ smaller or equal than the current number of chips and subtract $x$ chips from the heap. The game terminates when the current number of chips becomes smaller than $\min\{A\}$ and no moves are possible. The player who makes the last move is the winner. We can define $w^A(n)$ to be $1$ if Alice has a winning strategy with a starting heap of $n$ chips and $0$ if Bob has a winning strategy. By the Pigeonhole Principle, $w^A(n)$ becomes periodic, and it is easy to see that the period length is at most an exponential function of $\max\{A\}$. The typical period length is a linear function of $\max\{A\}$, and it is a long time open question if exponential period length is possible. We consider a slight modification of this game by introducing an initial seed $S$ that tells for the few initial numbers of chips whether the current or the opposite player is the winner. In this paper we show that the initial seed cannot change the period length of $w^A(n)$ if the size of $A$ is $1$ or $2$, but it can change the period length with $|A| \geq 3$. Further, we exhibit a class of sets $A$ of size $3$ and corresponding initial seeds such that the period length becomes a superpolynomial function of $\max\{A\}$., Comment: 36 pages, 8 figures; submitted to Discrete Mathematics
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- 2023
40. The likely maximum size of twin subtrees in a large random tree
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Bona, Miklos, Costin, Ovidiu, and Pittel, Boris
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Mathematics - Combinatorics ,05A05, 05A16, 05A15 - Abstract
We call a pair of vertex-disjoint, induced subtrees of a rooted trees twins if they have the same counts of vertices by out-degrees. The likely maximum size of twins in a uniformly random, rooted Cayley tree of size $n\to\infty$ is studied. It is shown that the expected number of twins of size $(2+\delta)\sqrt{\log n\cdot\log\log n}$ approaches zero, while the expected number of twins of size $(2-\delta)\sqrt{\log n\cdot\log\log n}$ approaches infinity., Comment: 16 pages
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- 2023
41. Dense, irregular, yet always graphic $3$-uniform hypergraph degree sequences
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Li, Runze and Miklos, Istvan
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Mathematics - Combinatorics ,Computer Science - Discrete Mathematics ,05C65, 05C07, 05C85 - Abstract
A $3$-uniform hypergraph is a generalization of simple graphs where each hyperedge is a subset of vertices of size $3$. The degree of a vertex in a hypergraph is the number of hyperedges incident with it. The degree sequence of a hypergraph is the sequence of the degrees of its vertices. The degree sequence problem for $3$-uniform hypergraphs is to decide if a $3$-uniform hypergraph exists with a prescribed degree sequence. Such a hypergraph is called a realization. Recently, Deza \emph{et al.} proved that the degree sequence problem for $3$-uniform hypergraphs is NP-complete. Some special cases are easy; however, polynomial algorithms have been known so far only for some very restricted degree sequences. The main result of our research is the following. If all degrees are between $\frac{2n^2}{63}+O(n)$ and $\frac{5n^2}{63}-O(n)$ in a degree sequence $D$, further, the number of vertices is at least $45$, and the degree sum can be divided by $3$, then $D$ has a $3$-uniform hypergraph realization. Our proof is constructive and in fact, it constructs a hypergraph realization in polynomial time for any degree sequence satisfying the properties mentioned above. To our knowledge, this is the first polynomial running time algorithm to construct a $3$-uniform hypergraph realization of a highly irregular and dense degree sequence.
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- 2023
42. Two dimensional quantum lattice models via mode optimized hybrid CPU-GPU density matrix renormalization group method
- Author
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Menczer, Andor, Kapás, Kornél, Werner, Miklós Antal, and Legeza, Örs
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Physics - Computational Physics ,Quantum Physics - Abstract
We present a hybrid numerical approach to simulate quantum many body problems on two spatial dimensional quantum lattice models via the non-Abelian ab initio version of the density matrix renormalization group method on state-of-the-art high performance computing infrastructures. We demonstrate for the two dimensional spinless fermion model and for the Hubbard model on torus geometry that altogether several orders of magnitude in computational time can be saved by performing calculations on an optimized basis and by utilizing hybrid CPU-multiGPU parallelization. At least an order of magnitude reduction in computational complexity results from mode optimization, while a further order of reduction in wall time is achieved by massive parallelization. Our results are measured directly in FLOP and seconds. A detailed scaling analysis of the obtained performance as a function of matrix ranks and as a function of system size up to $12\times 12$ lattice topology is discussed. Our CPU-multiGPU model also tremendously accelerates the calculation of the one- and two-particle reduced density matrices, which can be used to construct various order parameters and trace quantum phase transitions with high fidelity., Comment: 12 pages, 11 figures
- Published
- 2023
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43. Modelling daily mobility using mobile data traffic at fine spatiotemporal scale
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Christidis, Panayotis, Gonzalo, Maria Vega, and Radics, Miklos
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Computer Science - Machine Learning ,Statistics - Machine Learning - Abstract
We applied a data-driven approach that explores the usability of the NetMob 2023 dataset in modelling mobility patterns within an urban context. We combined the data with a highly suitable external source, the ENACT dataset, which provides a 1 km x 1km grid with estimates of the day and night population across Europe. We developed three sets of XGBoost models that predict the population in each 100m x 100m grid cell used in NetMob2023 based on the mobile data traffic of the 68 online services covered in the dataset, using the ENACT values as ground truth. The results suggest that the NetMob 2023 data can be useful for the estimation of the day and night population and grid cell level and can explain part of the dynamics of urban mobility., Comment: NetMob 2023 Conference
- Published
- 2023
44. Extended edge modes and disorder preservation of a symmetry-protected topological phase out-of-equilibrium
- Author
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Lane, Thomas L. M., Horváth, Miklós, and Patrick, Kristian
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Statistical Mechanics - Abstract
The time evolution of topological systems is an active area of interest due to their expected applications in fault-tolerant quantum computing. Here, we analyze the dynamics of a non-interacting spinless fermion chain in its topological phase, quenched out-of-equilibrium by a Hamiltonian belonging to the same symmetry class. Due to particle-hole symmetry, the bulk properties of the system remain intact throughout its evolution. However, the boundary properties may be drastically altered, with the initially localized Majorana edge modes extending across the chain. Up to a timescale $t^*$, identified by area-law behavior of the entanglement entropy, these extended edge modes are an example of exotic effects in topological systems out-of-equilibrium. Further, whilst local disorder can be utilized to preserve localization and increase $t^*$, we still identify non-trivial dynamics in the Majorana polarization and Loschmidt echo., Comment: 5+6 pages, 3+1 figures. Revised explanation for the regime for which our analysis is applicable, including updated figures and reference list
- Published
- 2023
45. Interleukin-1 receptor type 1 is overexpressed in neurons but not in glial cells within the rat superficial spinal dorsal horn in complete Freund adjuvant-induced inflammatory pain
- Author
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Krisztina Holló, László Ducza, Zoltán Hegyi, Klaudia Dócs, Krisztina Hegedűs, Erzsébet Bakk, Ildikó Papp, Gréta Kis, Zoltán Mészár, Zsuzsanna Bardóczi, and Miklós Antal
- Subjects
IL-1R1 ,Superficial spinal dorsal horn ,Rodents ,Inflammatory pain evoked by CFA injection ,Immunohistochemistry ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background All known biological functions of the pro-inflammatory cytokine interleukin-1β (IL-1β) are mediated by type 1 interleukin receptor (IL-1R1). IL-1β–IL-1R1 signaling modulates various neuronal functions including spinal pain processing. Although the role of IL-1β in pain processing is generally accepted, there is a discussion in the literature whether IL-1β exerts its effect on spinal pain processing by activating neuronal or glial IL-1R1. To contribute to this debate, here we investigated the expression and cellular distribution of IL-1R1 in the superficial spinal dorsal horn in control animals and also in inflammatory pain. Methods Experiments were performed on rats and wild type as well as IL-1R1-deficient mice. Inflammatory pain was evoked by unilateral intraplantar injection of complete Freund adjuvant (CFA). The nociceptive responsiveness of control and CFA-treated animals were tested daily for withdrawal responses to mechanical and thermal stimuli before and after CFA injection. Changes in the expression of 48 selected genes/mRNAs and in the quantity of IL-1R1 protein during the first 3 days after CFA injection were measured with the TaqMan low-density array method and Western blot analysis, respectively. The cellular localization of IL-1R1 protein was investigated with single and double staining immunocytochemical methods. Results We found a six times and two times increase in IL-1R1 mRNA and protein levels, respectively, in the dorsal horn of CFA-injected animals 3 days after CFA injection, at the time of the summit of mechanical and thermal allodynia. Studying the cellular distribution of IL-1R1, we found an abundant expression of IL-1R1 on the somatodendritic compartment of neurons and an enrichment of the receptor in the postsynaptic membranes of some excitatory synapses. In contrast to the robust neuronal localization, we observed only a moderate expression of IL-1R1 on astrocytes and a negligible one on microglial cells. CFA injection into the hind paw caused a remarkable increase in the expression of IL-1R1 in neurons, but did not alter the glial expression of the receptor. Conclusion The results suggest that IL-1β exerts its effect on spinal pain processing primarily through neuronal IL-1R1, but it can also interact in some extent with IL-1R1 expressed by astrocytes.
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- 2017
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46. A kriminalisztikai gondolkodás – újratöltve
- Author
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Miklós Angyal
- Subjects
kriminalisztika ,bűncselekmények ,kompetencia ,Political institutions and public administration (General) ,JF20-2112 - Abstract
A szerző értékelést ad a bűncselekményekhez szükséges kompetenciák vizsgálatáról.
- Published
- 2019
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47. Examination of the Correlation Between Ethical Attitudes and Dark Triad Personality Traits Among University Students
- Author
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Edit Barizsné Hadházi, Roland Filep, Péter Miklós Komíves, András István Kun, Mária Ujhelyi, and Krisztina Dajnoki
- Abstract
The purpose of the present paper is to examine the relationship between the ethical attitudes of university students and their Dark Triad personality traits. Research has suggested that the juvenile attitudes of people predict their later behaviour. Therefore, it is worth exploring this area for future aspects. Both topics are at the center of research, both individually and in terms of the correlations between them. In the present paper, we examined the relationship between ethical attitudes and the Dark Triad personality traits through questionnaires used in international research with background variables. We found that the most unethical behaviour is 'Divulging confidential information,' 'Passing blame for your errors to an innocent co-worker,' and 'Claiming credit for someone else's work.' The least unethical behaviour is 'Eating snacks while at your workstation'. Factor analysis and linear regression analysis were used. Despite our expectations, the revealed relationships between ethical attitudes and Dark Triad personality traits were not clearly positive. According to the regression model, the dark triad personality score is lower if the respondent is female, studies at the commerce-marketing major, and has higher values at the following factors: 'physiological unethicalness', 'overcharge', and 'other ethical attitudes' factors.
- Published
- 2023
48. The Likely Maximum Size of Twin Subtrees in a Large Random Tree
- Author
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Bóna, Miklós, Costin, Ovidiu, and Pittel, Boris
- Published
- 2024
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49. Computed tomography as distortion mitigation method for selective laser sintering mass production
- Author
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Marczis, Attila, Odrobina, Miklós, and Drégelyi-Kiss, Ágota
- Published
- 2024
- Full Text
- View/download PDF
50. Multi-baiting YATLORf sex pheromone traps to optimize click beetle (Agriotes spp., Coleoptera: Elateridae) monitoring for low-cost IPM of wireworms
- Author
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Furlan, Lorenzo, Bona, Stefano, and Tóth, Miklós
- Published
- 2024
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