cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Long-range correlations and fractal dynamics in C. elegans: changes with aging and stress
Creators: name: Alves, Luiz G. A.
name: Winter, Peter B.
name: Ferreira, Leonardo N.
name: Brielmann, Renée M.
name: Morimoto, Richard I.
name: Amaral, Luís A. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Reduced motor control is one of the most frequent features associated with aging and disease. Nonlinear and fractal analyses have proved to be useful in investigating human physiological alterations with age and disease. Similar findings have not been established for any of the model organisms typically studied by biologists, though. If the physiology of a simpler model organism displays the same characteristics, this fact would open a new research window on the control mechanisms that organisms use to regulate physiological processes during aging and stress. Here, we use a recently introduced animal tracking technology to simultaneously follow tens of Caenorhabdits elegans for several hours and use tools from fractal physiology to quantitatively evaluate the effects of aging and temperature stress on nematode motility. Similarly to human physiological signals, scaling analysis reveals long-range correlations in numerous motility variables, fractal properties in behavioral shifts, and fluctuation dynamics over a wide range of timescales. These properties change as a result of a superposition of age and stress-related adaptive mechanisms that regulate motility.
description: Accepted for publication in Physical Review E
The chirality theorem
Creators: name: Gracia-Bondía, José M.
name: Mund, Jens
name: Várilly, Joseph C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how chirality of the weak interactions stems from string independence in the string-local formalism of quantum field theory.
description: Latex, 31 pages. v2: minor changes, 3 references added, author order now alphabetical. v3: substantial rewrite to improve presentation, conclusions unchanged. v4: minor edits to match published version, one reference added. To appear in Annales Henri Poincar\'e
Unification of Dark Matter - Dark Energy in Generalized Galileon Theories
Creators: name: Koutsoumbas, George
name: Ntrekis, Konstantinos
name: Papantonopoulos, Eleftherios
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a unified description of the dark matter and the dark energy sectors, in the framework of shift-symmetric generalized Galileon theories. Considering a particular combination of terms in the Horndeski Lagrangian in which we have not introduced a cosmological constant or a matter sector, we obtain an effective unified cosmic fluid whose equation of state $w_U$ is zero during the whole matter era, namely from redshifts $z\sim3000$ up to $z\sim2-3$. Then at smaller redshifts it starts decreasing, passing the bound $w_U=-1/3$, which marks the onset of acceleration, at around $z\sim0.5$. At present times it acquires the value $w_U=-0.7$. Finally, it tends toward a de-Sitter phase in the far future. This behaviour is in excellent agreement with observations. Additionally, confrontation with Supernovae type Ia data leads to a very efficient fit. Examining the model at the perturbative level, we show that it is free from pathologies such as ghosts and Laplacian instabilities, at both scalar and tensor sectors, at all times.
description: 15 pages, 6 figures, version published in JCAP
A Generalization of the Doubling Construction for Sums of Squares Identities
Creators: name: Zhang, Chi
name: Huang, Hua-Lin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The doubling construction is a fast and important way to generate new solutions to the Hurwitz problem on sums of squares identities from any known ones. In this short note, we generalize the doubling construction and obtain from any given admissible triple $[r,s,n]$ a series of new ones $[r+ρ(2^{m-1}),2^ms,2^mn]$ for all positive integer $m$, where $ρ$ is the Hurwitz-Radon function.
Supercharacters and the discrete Fourier, cosine, and sine transforms
Creators: name: Garcia, Stephan Ramon
name: Yih, Samuel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Using supercharacter theory, we identify the matrices that are diagonalized by the discrete cosine and discrete sine transforms, respectively. Our method affords a combinatorial interpretation for the matrix entries.
description: 21 pages; to appear in Communications in Algebra
Prior Density Learning in Variational Bayesian Phylogenetic Parameters Inference
Creators: name: Remita, Amine M.
name: Vitae, Golrokh
name: Diallo, Abdoulaye Baniré
Publisher: name: arXiv
Year: 2023
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Machine Learning (cs.LG)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: The advances in variational inference are providing promising paths in Bayesian estimation problems. These advances make variational phylogenetic inference an alternative approach to Markov Chain Monte Carlo methods for approximating the phylogenetic posterior. However, one of the main drawbacks of such approaches is modelling the prior through fixed distributions, which could bias the posterior approximation if they are distant from the current data distribution. In this paper, we propose an approach and an implementation framework to relax the rigidity of the prior densities by learning their parameters using a gradient-based method and a neural network-based parameterization. We applied this approach for branch lengths and evolutionary parameters estimation under several Markov chain substitution models. The results of performed simulations show that the approach is powerful in estimating branch lengths and evolutionary model parameters. They also show that a flexible prior model could provide better results than a predefined prior model. Finally, the results highlight that using neural networks improves the initialization of the optimization of the prior density parameters.
description: Accepted as a full paper for publication at RECOMB-CG 2023 (LNBI proof version). 15 pages (excluding references), 6 tables and 1 figure
Generating Evidential BEV Maps in Continuous Driving Space
Creators: name: Yuan, Yunshuang
name: Cheng, Hao
name: Yang, Michael Ying
name: Sester, Monika
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Safety is critical for autonomous driving, and one aspect of improving safety is to accurately capture the uncertainties of the perception system, especially knowing the unknown. Different from only providing deterministic or probabilistic results, e.g., probabilistic object detection, that only provide partial information for the perception scenario, we propose a complete probabilistic model named GevBEV. It interprets the 2D driving space as a probabilistic Bird's Eye View (BEV) map with point-based spatial Gaussian distributions, from which one can draw evidence as the parameters for the categorical Dirichlet distribution of any new sample point in the continuous driving space. The experimental results show that GevBEV not only provides more reliable uncertainty quantification but also outperforms the previous works on the benchmarks OPV2V and V2V4Real of BEV map interpretation for cooperative perception in simulated and real-world driving scenarios, respectively. A critical factor in cooperative perception is the data transmission size through the communication channels. GevBEV helps reduce communication overhead by selecting only the most important information to share from the learned uncertainty, reducing the average information communicated by 87% with only a slight performance drop. Our code is published at https://github.com/YuanYunshuang/GevBEV.
Radial Scaling in Inclusive Jet Production at Hadron Colliders
Creators: name: Taylor, Frank E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inclusive jet production in p-p and pbar-p collisions shows many of the same kinematic systematics as observed in single particle inclusive production at much lower energies. In an earlier study (1974) a phenomenology, called radial scaling, was developed for the single particle inclusive cross sections that attempted to capture the essential underlying physics of point-like parton scattering and the fragmentation of partons into hadrons suppressed by the kinematic boundary. The phenomenology was successful in emphasizing the underlying systematics of the inclusive particle productions. Here we demonstrate that inclusive jet production at the LHC in high-energy p-p collisions and at the Tevatron in pbar-p inelastic scattering show similar behavior. The ATLAS inclusive jet production plotted as a function of this scaling variable is studied for sqrt(s) of 2.76, 7 and 13 TeV and is compared to pbar-p inclusive jet production at 1.96 TeV measured at the CDF and D0 at the Tevatron and p-Pb inclusive jet production at the LHC ATLAS at sqrt(sNN) = 5.02 TeV. Inclusive single particle production at FNAL fixed target and ISR energies are compared to inclusive J/Psi production at the LHC measured in ATLAS, CMS and LHCb. Striking common features of the data are discussed.
description: 47 pages, 22 figures, 6 tables. Version 2 - more data added, references enhanced
Constructing a figured world of bilingual education : authoring dreamers and changers with mentor texts, supplemental mentor texts and libritos
Creators: name: Lewis, Brenda Ayala
name: 0000-0003-2855-530X
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Biliteracy
Mentor texts
Figured worlds
Bilingual education
Dual language
Curriculum
Pedagogy
Critical historical thinking
Culturally relevant literature
The continua of biliteracy
Latinidad

description: This qualitative case study investigated how mentor texts can be utilized as a pedagogical approach in bilingual instruction to cultivate biliteracy development in bilingual classrooms. Bilingual scholars must heed the call to action for more qualitative studies that present bilingual teachers’ contributions in the development of biliteracy, bilingualism, and biculturalism via mentor texts as tools for recognizing and affirming biliterate identities, responding to texts by taking a stance, and the re-cognizing of social issues to create alternative figured worlds. Utilizing figured worlds and the continua of biliteracy framework, investigation findings expand upon how emergent bilinguals can draw from all points of the biliteracy continua and dispels the notion that one mentor text is sufficient in students’ making connections between protagonist’s lived experiences and their own. This study emphasizes the need to create libritos for each mentor text to support reflective written responses, and supported students authoring of self as dreamers and changers. Supplemental mentor texts were necessary for student development of voice via in-depth study to contextualize the time-period when the protagonists faced unfair situations. Mentor texts, supplemental mentor texts, and libritos were all necessary in authoring new possibilities. Implications suggest that children’s literature promote students seeing themselves represented in the text. Expanding upon the notion of Latinidad demands critical discussion, analysis, and evaluation of protagonists and lived experiences along with the examination of diverse perspectives. As mediating tools, mentor texts, can be used for planning integrated units of study to cultivate critical thinking and writing about social (in)justice. Libritos and mentor texts offer powerful tools for biliteracy development. Adding a sixth condition to Dorfman and Cappelli’s criteria for mentor texts is recommended, since writing responses add to students’ developing understandings about craft, genre, content, style, technique, modalities, etc. A study of curriculum that creates opportunities for social issues to be utilized as a springboard for bilingual student examination of socio-historical and sociocultural contexts contribute to learning more about responsible citizenry. This can begin an examination of student roles as consumers of text and challenge the dominant narratives of marginalized populations using counternarratives.
Tzeltalia E. Estrada & M. Martinez 1998
Creators: name: Durán, Ramiro Cruz
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Solanales
Solanaceae
Tzeltalia

description: Key to the known species of Tzeltalia (adapted from Martínez & Vargas, 2005).
 1. Calyx distinctly lobed, the lobes (2) 7‒10 mm long.................................................................................................... T. amphitricha
1. Calyx truncate, or if lobed, the lobes 3 mm long or less.
 2. Corolla white, 1.5‒3 cm in diameter; plants of cloud forest............................................................................................. T. calidaria
2. Corolla yellow to greenish-yellow or white-purple, 1‒1.7 cm in diameter; plants of pine or oak forestsor matorral.
 3. Flowers per fascicle(1‒)2‒5; pedicels 5 mm long; calyx terete, 3 cm long; fruit 1 cm in diameter; leaf margin slightly revolute; pine forest; Chiapas................................................................................................................................................................ T. esenbeckii
 3. Flowers per fascicle (4–)6–10(–11); pedicels 10–16 mm long, fruting calyx spheric, 0.45–0.7 cm long; fruit 0.3–0.6 cm in diameter; leaf margin plane; pine or oak forests; Guerrero and Oaxaca......................................................................................... T. graciellae
description: Published as part of Durán, Ramiro Cruz, 2024, Tzeltalia graciellae (Solanaceae), a new species from the states of Guerrero and Oaxaca, Mexico, pp. 188-192 in Phytotaxa 653 (2) on page 191, DOI: 10.11646/phytotaxa.653.2.7, http://zenodo.org/record/13216969
On H-Spaces and a Congruence of Catalan Numbers
Creators: name: Friedmann, Tamar
name: Harper, John R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05A15, 55P45, 05E15, 11A07, 11B50

description: For $p$ an odd prime and $F$ the cyclic group of order $p$, we show that the number of conjugacy classes of embeddings of $F$ in $SU(p)$ such that no element of $F$ has 1 as an eigenvalue is $(1+C_{p-1})/p$, where $C_{p-1}$ is a Catalan number. We prove that the only coset space $SU(p)/F$ that admits a $p$-local $H$-structure is the classical Lie group $PSU(p)$. We also show that $SU(4)/\mathbb Z_3$, where $\mathbb Z_3$ is embedded off the center of $SU(4)$, is a novel example of an $H$-space, even globally. We apply our results to the study of homotopy classes of maps from $BF$ to $BSU(n)$.
description: 14 pages, minor revisions; to appear in Homology, Homotopy and Applications
Data Preservation in High Energy Physics
Creators: name: Basaglia, T.
name: Bellis, M.
name: Blomer, J.
name: Boyd, J.
name: Bozzi, C.
name: Britzger, D.
name: Campana, S.
name: Cartaro, C.
name: Chen, G.
name: Couturier, B.
name: David, G.
name: Diaconu, C.
name: Dobrin, A.
name: Duellmann, D.
name: Ebert, M.
name: Elmer, P.
name: Fernandes, J.
name: Fields, L.
name: Fokianos, P.
name: Ganis, G.
name: Geiser, A.
name: Gheata, M.
name: Lopez, J. B. Gonzalez
name: Hara, T.
name: Heinrich, L.
name: Herner, K.
name: Hildreth, M.
name: Jayatilaka, B.
name: Kado, M.
name: Keeble, O.
name: Kohls, A.
name: Naim, K.
name: Lange, C.
name: Lassila-Perini, K.
name: Levonian, S.
name: Maggi, M.
name: Marshall, Z.
name: Vila, P. Mato
name: Mečionis, A.
name: Morris, A.
name: Piano, S.
name: Potekhin, M.
name: Schröder, M.
name: Schwickerath, U.
name: Sexton-Kennedy, E.
name: Šimko, T.
name: Smith, T.
name: South, D.
name: Verbytskyi, A.
name: Vidal, M.
name: Vivace, A.
name: Wang, L.
name: Watt, G.
name: Wenaus, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Data preservation is a mandatory specification for any present and future experimental facility and it is a cost-effective way of doing fundamental research by exploiting unique data sets in the light of the continuously increasing theoretical understanding. This document summarizes the status of data preservation in high energy physics. The paradigms and the methodological advances are discussed from a perspective of more than ten years of experience with a structured effort at international level. The status and the scientific return related to the preservation of data accumulated at large collider experiments are presented, together with an account of ongoing efforts to ensure long-term analysis capabilities for ongoing and future experiments. Transverse projects aimed at generic solutions, most of which are specifically inspired by open science and FAIR principles, are presented as well. A prospective and an action plan are also indicated.
Pressure-tuning of bond-directional exchange interactions and magnetic frustration in hyperhoneycomb iridate $β$-$\mathrm{Li_2IrO_3}$
Creators: name: Veiga, L. S. I.
name: Etter, M.
name: Glazyrin, K.
name: Sun, F.
name: Escanhoela, C. A.
name: Fabbris, G.
name: Mardegan, J. R. L.
name: Malavi, P. S.
name: Deng, Y.
name: Stavropoulos, P. P.
name: Kee, H. -Y.
name: Yang, W. G.
name: van Veenendaal, M.
name: Schilling, J. S.
name: Takayama, T.
name: Takagi, H.
name: Haskel, D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We explore the response of Ir $5d$ orbitals to pressure in $β$-$\mathrm{Li_2IrO_3}$, a hyperhoneycomb iridate in proximity to a Kitaev quantum spin liquid (QSL) ground state. X-ray absorption spectroscopy reveals a reconstruction of the electronic ground state below 2 GPa, the same pressure range where x-ray magnetic circular dichroism shows an apparent collapse of magnetic order. The electronic reconstruction, which manifests a reduction in the effective spin-orbit (SO) interaction in $5d$ orbitals, pushes $β$-$\mathrm{Li_2IrO_3}$ further away from the pure $J_{\rm eff}=1/2$ limit. Although lattice symmetry is preserved across the electronic transition, x-ray diffraction shows a highly anisotropic compression of the hyperhoneycomb lattice which affects the balance of bond-directional Ir-Ir exchange interactions driven by spin-orbit coupling at Ir sites. An enhancement of symmetric anisotropic exchange over Kitaev and Heisenberg exchange interactions seen in theoretical calculations that use precisely this anisotropic Ir-Ir bond compression provides one possible route to realization of a QSL state in this hyperhoneycomb iridate at high pressures.
Measurements of the suppression and correlations of dijets in Xe+Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the suppression and correlations of dijets is performed using 3 $μ$b$^{-1}$ of Xe+Xe data at $\sqrt{s_{\mathrm{NN}}} = 5.44$ TeV collected with the ATLAS detector at the LHC. Dijets with jets reconstructed using the $R=0.4$ anti-$k_t$ algorithm are measured differentially in jet $p_{\text{T}}$ over the range of 32 GeV to 398 GeV and the centrality of the collisions. Significant dijet momentum imbalance is found in the most central Xe+Xe collisions, which decreases in more peripheral collisions. Results from the measurement of per-pair normalized and absolutely normalized dijet $p_{\text{T}}$ balance are compared with previous Pb+Pb measurements at $\sqrt{s_{\mathrm{NN}}} =5.02$ TeV. The differences between the dijet suppression in Xe+Xe and Pb+Pb are further quantified by the ratio of pair nuclear-modification factors. The results are found to be consistent with those measured in Pb+Pb data when compared in classes of the same event activity and when taking into account the difference between the center-of-mass energies of the initial parton scattering process in Xe+Xe and Pb+Pb collisions. These results should provide input for a better understanding of the role of energy density, system size, path length, and fluctuations in the parton energy loss.
description: 40 pages in total, 8 figures, 3 tables, author list starting in page 23, published in PRC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2018-28/
XY* transition and extraordinary boundary criticality from fractional exciton condensation in quantum Hall bilayer
Creators: name: Zhang, Ya-Hui
name: Zhu, Zheng
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: XY* transitions represent one of the simplest examples of unconventional quantum criticality, in which fractionally charged excitations condense into a superfluid, and display novel features that combine quantum criticality and fractionalization. Nevertheless their experimental realization is challenging. Here we propose to study the XY* transition in quantum Hall bilayers at filling $(ν_1,ν_2)=(\frac{1}{3},\frac{2}{3})$ where the exciton condensate (EC) phase plays the role of the superfluid. Supported by exact diagonalization calculation, we argue that there is a continuous transition between an EC phase at small bilayer separation to a pair of decoupled fractional quantum Hall states, at large separation. The transition is driven by condensation of a fractional exciton, a bound state of Laughlin quasiparticle and quasihole, and is in the XY* universality class. The fractionalization is manifested by unusual properties including a large anomalous exponent and fractional universal conductivity, which can be conveniently measured through inter-layer tunneling and counter-flow transport, respectively. We also show that the edge is likely to realize the newly predicted extra-ordinary boundary criticality. Our work highlights the promise of quantum Hall bilayers as an ideal platform for exploring exotic bulk and boundary critical behaviors, that are amenable to immediate experimental exploration in dual-gated bilayer systems.
description: 5+7 pages; 3 figures; v2: add a section on general Abelian states; also add some references
Stepping Forward with Exoskeletons: Team IHMC's Design and Approach in the 2016 Cybathlon
Creators: name: Griffin, Robert
name: Cobb, Tyson
name: Craig, Travis
name: Daniel, Mark
name: van Dijk, Nick
name: Gines, Jeremy
name: Kramer, Koen
name: Shah, Shriya
name: Siebinga, Olger
name: Smith, Jesper
name: Neuhaus, Peter
Publisher: name: arXiv
Year: 2017
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Exoskeletons are a promising technology that enables individuals with mobility limitations to walk again. As the 2016 Cybathlon illustrated, however, the community has a considerable way to go before exoskeletons have the necessary capabilities to be incorporated into daily life. While most exoskeletons power only hip and knee flexion, Team Institute for Human and Machine Cognition (IHMC) presents a new exoskeleton, Mina v2, which includes a powered ankle dorsi/plantar flexion. As our entry to the 2016 Cybathlon Powered Exoskeleton Competition, Mina v2's performance allowed us to explore the effectiveness of its powered ankle compared to other powered exoskeletons for pilots with paraplegia. We designed our gaits to incorporate powered ankle plantar flexion to help improve mobility, which allowed our pilot to navigate the given Cybathlon tasks quickly, including those that required ascending movements, and reliably achieve average, conservative walking speeds of 1.04 km/h (0.29 m/s). This enabled our team to place second overall in the Powered Exoskeleton Competition in the 2016 Cybathlon.
Steep-slope Hysteresis-free Negative Capacitance MoS2 Transistors
Creators: name: Si, Mengwei
name: Su, Chun-Jung
name: Jiang, Chunsheng
name: Conrad, Nathan J.
name: Zhou, Hong
name: Maize, Kerry D.
name: Qiu, Gang
name: Wu, Chien-Ting
name: Shakouri, Ali
name: Alam, Muhammad A.
name: Ye, Peide D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The so-called Boltzmann Tyranny defines the fundamental thermionic limit of the subthreshold slope (SS) of a metal-oxide-semiconductor field-effect transistor (MOSFET) at 60 mV/dec at room temperature and, therefore, precludes the lowering of the supply voltage and the overall power consumption. Adding a ferroelectric negative capacitor to the gate stack of a MOSFET may offer a promising solution to bypassing this fundamental barrier. Meanwhile, two-dimensional (2D) semiconductors, such as atomically thin transition metal dichalcogenides (TMDs) due to their low dielectric constant, and ease of integration in a junctionless transistor topology, offer enhanced electrostatic control of the channel. Here, we combine these two advantages and demonstrate for the first time a molybdenum disulfide (MoS2) 2D steep slope transistor with a ferroelectric hafnium zirconium oxide layer (HZO) in the gate dielectric stack. This device exhibits excellent performance in both on- and off-states, with maximum drain current of 510 μA/μm, sub-thermionic subthreshold slope and is essentially hysteresis-free. Negative differential resistance (NDR) was observed at room temperature in the MoS2 negative capacitance field-effect-transistors (NC-FETs) as the result of negative capacitance due to the negative drain-induced-barrier-lowering (DIBL). High on-current induced self-heating effect was also observed and studied.
description: 23 pages, 14 figures
Dialeto caipira na região paulista do Médio Tietê [Caipira dialect in the Médio Tietê region, São Paulo State]
Creators: name: Figueiredo Junior, Selmo Ribeiro
Publisher: name: Zenodo
Year: 2014
Subjects: geolinguistics
"Caipira" dialect
variation

description: [In English below.] A comunicação oral de que este resumo de conferência trata visou a informar o andamento do meu projeto de doutorado à época. O objetivo apresentação foi colher feedback dos pares acerca dele, o qual propunha elaborar um atlas tanto fonético-fonológico quanto semântico-lexical do português falado no Médio Tietê, uma região no interior paulista. Para isso, dez municípios viriam a ser visitados. Na ocasião da comunicação, uma discussão metodológica foi especialmente promovida. Palavras-chave: geolinguística; dialeto caipira; variação. Cite como (ABNT):
 FIGUEIREDO JR., S. R. Dialeto caipira na região paulista do Médio Tietê: projeto de registro de variações fonético-fonológicas e semântico-lexicais. I Simpósio Internacional sobre Linguagem e Cognição (I LINCOG). Anais... In: I SIMPÓSIO INTERNACIONAL SOBRE LINGUAGEM E COGNIÇÃO (I LINCOG). São Paulo: FFLCH/USP, 4 nov. 2014. The presentation this conference abstract is about was aimed at sharing the progress of my PhD project back then in order to obtain peer feedback. Based on geolinguistic principles, the project intended to draw up a linguistic atlas of the variety of Portuguese spoken in the Médio Tietê region, São Paulo State, Brazil. The targeted linguistic levels were phonetic-phonological and semantic-lexical. The network of localities was made up of ten cities where data were collected. The presentation provided an opportunity to discuss methodological issues in particular. Keywords: geolinguistics; “Caipira” dialect; variation. Cite as (APA):
 Figueiredo Jr., S. R. (2014). Dialeto caipira na região paulista do Médio Tietê: projeto de registro de variações fonético-fonológicas e semântico-lexicais [Caipira dialect in the Médio Tietê region, São Paulo State: A project for recording phonetic-phonological and semantic-lexical variations]. Anais de Resumos do I Simpósio Internacional sobre Linguagem e Cognição (I LINCOG), 143-145.
description: It is a conference abstract uploaded to Zenodo.org on June 7, 2022.
Statistical field theory with constraints: application to critical Casimir forces in the canonical ensemble
Creators: name: Gross, Markus
name: Gambassi, Andrea
name: Dietrich, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The effect of imposing a constraint on a fluctuating scalar order parameter field in a system of finite volume is studied within statistical field theory. The canonical ensemble, corresponding to a fixed total integrated order parameter, is obtained as a special case of the theory. A perturbative expansion is developed which allows one to systematically determine the constraint-induced finite-volume corrections to the free energy and to correlation functions. In particular, we focus on the Landau-Ginzburg model in a film geometry (i.e., a rectangular parallelepiped with a small aspect ratio) with periodic, Dirichlet, or Neumann boundary conditions in the transverse direction and periodic boundary conditions in the remaining, lateral directions. Within the expansion in terms of $ε=4-d$, where $d$ is the spatial dimension of the bulk, the finite-size contribution to the free energy and the associated critical Casimir force are calculated to leading order in $ε$ and are compared to the corresponding expressions for an unconstrained (grand canonical) system. The constraint restricts the fluctuations within the system and it accordingly modifies the residual finite-size free energy. The resulting Casimir force is shown to depend on whether it is defined by assuming a fixed transverse area or a fixed total volume. In the former case, the constraint is typically found to significantly enhance the attractive character of the force as compared to the grand canonical case. In contrast to the grand canonical Casimir force, which, for supercritical temperatures, vanishes in the limit of thick films, the canonical Casimir force defined for fixed transverse area attains for thick films a negative value for all boundary conditions studied here. Typically, the dependence of the Casimir force both on the temperature- and on the field-like scaling variables is different in the two ensembles.
description: 46 pages, 11 figures
SUNIY INTELLEKT YASHIL IQTISODIYOTNI RIVOJLANTIRISHNING MUHIM YOʻNALISHI SIFATIDA.
Creators: name: Ahmedov, Azimjon
name: Xabibov, Shamshod
name: Mirzayev, Shohijahon
Publisher: name: Zenodo
Year: 2025

description: Sun'iy intellektning global miqyosdagi atrof-muhitga ta'siri hali ham o'rganilmagan. Ushbu tadqiqot 2010 va 2024 yillar davomida global yashil mahsuldorlikni oshirishda sun'iy intellektning murakkab rolini o'rganish uchun muvozanatli panel ma'lumotlar to'plamidan foydalanadi[1].Batafsil vositachilik tahlili shuni ko’rsatadiki, sun'iy intellekt bilvosita qayta tiklanadigan energiyadan foydalanishni ko'paytirish, malakali ishchilarni jalb qilish va fond bozori faoliyatini pasaytirish orqali yashil mahsuldorlikka yordam beradi. Qo'shimcha tahlillar moliyaviy rivojlanish odatda sun'iy intellektning yashil hosildorlikka ijobiy ta'sirini kuchaytirishini tasdiqlaydi. Ushbu natijalar sun'iy intellekt va yashil iqtisodiyot o'rtasidagi o'zaro bog'liqlik haqida qimmatli tushunchalarni taqdim etadi.
On the Performance of Practical Ultra-Dense Networks: The Major and Minor Factors
Creators: name: Ding, Ming
name: Lopez-Perez, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we conduct performance evaluation for Ultra-Dense Networks (UDNs), and identify which modelling factors play major roles and minor roles. From our study, we draw the following conclusions. First, there are 3 factors/models that have a major impact on the performance of UDNs, and they should be considered when performing theoretical analyses: i) a multi-piece path loss model with line-of-sight (LoS) and non-lineof- sight (NLoS) transmissions; ii) a non-zero antenna height difference between base stations (BSs) and user equipments (UEs); iii) a finite BS/UE density. Second, there are 4 factors/models that have a minor impact on the performance of UDNs, i.e., changing the results quantitatively but not qualitatively, and thus their incorporation into theoretical analyses is less urgent: i) a general multi-path fading model based on Rician fading; ii) a correlated shadow fading model; iii) a BS density dependent transmission power; iv) a deterministic BS/user density. Finally, there are 5 factors/models for future study: i) a BS vertical antenna pattern; ii) multi-antenna and/or multi-BS joint transmissions; iii) a proportional fair BS scheduler; iv) a non-uniform distribution of BSs; v) a dynamic time division duplex (TDD) or full duplex (FD) network. Our conclusions can guide researchers to downselect the assumptions in their theoretical analyses, so as to avoid unnecessarily complicated results, while still capturing the fundamentals of UDNs in a meaningful way.
description: Final IEEE version: http://ieeexplore.ieee.org/document/7959926/. arXiv admin note: text overlap with arXiv:1609.07710
Data-driven and Almost Model-independent Reconstruction of Modified Gravity
Creators: name: Mu, Yuhao
name: Li, En-Kun
name: Xu, Lixin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, a modified factor $μ$, which characterizes modified gravity in the linear matter density perturbation theory, is reconstructed in a data-driven and almost model-independent way via Gaussian process by using currently available cosmic observations. Utilizing the Pantheon+ SNe Ia samples, the observed Hubble parameter $H(z)$ and the redshift space distortion $fσ_8(z)$ data points, one finds out a time varying $μ$ at low redshifts. The reconstructed $μ$ implies that more complicated modified gravity beyond the simplest general relativity and the Dvali-Gabadadze-Porrati braneworld model is required.
description: 14 pages, 3 figures
Efficient Generator of Mathematical Expressions for Symbolic Regression
Creators: name: Mežnar, Sebastian
name: Džeroski, Sašo
name: Todorovski, Ljupčo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.0; I.2.6

description: We propose an approach to symbolic regression based on a novel variational autoencoder for generating hierarchical structures, HVAE. It combines simple atomic units with shared weights to recursively encode and decode the individual nodes in the hierarchy. Encoding is performed bottom-up and decoding top-down. We empirically show that HVAE can be trained efficiently with small corpora of mathematical expressions and can accurately encode expressions into a smooth low-dimensional latent space. The latter can be efficiently explored with various optimization methods to address the task of symbolic regression. Indeed, random search through the latent space of HVAE performs better than random search through expressions generated by manually crafted probabilistic grammars for mathematical expressions. Finally, EDHiE system for symbolic regression, which applies an evolutionary algorithm to the latent space of HVAE, reconstructs equations from a standard symbolic regression benchmark better than a state-of-the-art system based on a similar combination of deep learning and evolutionary algorithms.ž
description: 35 pages, 11 tables, 7 multi-part figures, Machine learning (Springer) and journal track of ECML/PKDD 2023
How many dissenters does it take to disorder a flock?
Creators: name: Yllanes, D.
name: Leoni, M.
name: Marchetti, M. C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We consider the effect of introducing a small number of non-aligning agents in a well-formed flock. To this end, we modify a minimal model of active Brownian particles with purely repulsive (excluded volume) forces to introduce an alignment interaction that will be experienced by all the particles except for a small minority of "dissenters". We find that even a very small fraction of dissenters disrupts the flocking state. Strikingly, these motile dissenters are much more effective than an equal number of static obstacles in breaking up the flock. For the studied system sizes we obtain clear evidence of scale invariance at the flocking-disorder transition point and the system can be effectively described with a finite-size scaling formalism. We develop a continuum model for the system which reveals that dissenters act like annealed noise on aligners, with a noise strength that grows with the persistence of the dissenters' dynamics.
description: 22 pages, 8 figures. Version accepted for publication in New Journal of Physics
The Finsler spacetime condition for (α,β)-metrics and their isometries
Creators: name: Voicu, Nicoleta
name: Friedl-Szász, Annamária
name: Popovici-Popescu, Elena
name: Pfeifer, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For the general class of pseudo-Finsler spaces with $(α,β)$-metrics, we establish necessary and sufficient conditions such that these admit a Finsler spacetime structure. This means that the fundamental tensor has Lorentzian signature on a conic subbundle of the tangent bundle and thus the existence of a cone of future pointing timelike vectors is ensured. The identified $(α,β)$-Finsler spacetimes are candidates for applications in gravitational physics. Moreover, we completely determine the relation between the isometries of an $(α,β)$-metric and the isometries of the underlying pseudo-Riemannian metric $a$; in particular, we list all $(α,β)$-metrics which admit isometries that are not isometries of $a$.
description: 25 pages
Tail recursion transformation for invertible functions
Creators: name: Kristensen, Joachim Tilsted
name: Kaarsgaard, Robin
name: Thomsen, Michael Kirkedal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Tail recursive functions allow for a wider range of optimisations than general recursive functions. For this reason, much research has gone into the transformation and optimisation of this family of functions, in particular those written in continuation passing style (CPS). Though the CPS transformation, capable of transforming any recursive function to an equivalent tail recursive one, is deeply problematic in the context of reversible programming (as it relies on troublesome features such as higher-order functions), we argue that relaxing (local) reversibility to (global) invertibility drastically improves the situation. On this basis, we present an algorithm for tail recursion conversion specifically for invertible functions. The key insight is that functions introduced by program transformations that preserve invertibility, need only be invertible in the context in which the functions subject of transformation calls them. We show how a bespoke data type, corresponding to such a context, can be used to transform invertible recursive functions into a pair of tail recursive function acting on this context, in a way where calls are highlighted, and from which a tail recursive inverse can be straightforwardly extracted.
description: Submitted to 15th Conference on Reversible Computation, 2023
Improved Guarantees for Vertex Sparsification in Planar Graphs
Creators: name: Goranci, Gramoz
name: Henzinger, Monika
name: Peng, Pan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: G.2.2; F.2.2

description: Graph Sparsification aims at compressing large graphs into smaller ones while preserving important characteristics of the input graph. In this work we study Vertex Sparsifiers, i.e., sparsifiers whose goal is to reduce the number of vertices. We focus on the following notions: (1) Given a digraph $G=(V,E)$ and terminal vertices $K \subset V$ with $|K| = k$, a (vertex) reachability sparsifier of $G$ is a digraph $H=(V_H,E_H)$, $K \subset V_H$ that preserves all reachability information among terminal pairs. In this work we introduce the notion of reachability-preserving minors (RPMs) , i.e., we require $H$ to be a minor of $G$. We show any directed graph $G$ admits a RPM $H$ of size $O(k^3)$, and if $G$ is planar, then the size of $H$ improves to $O(k^{2} \log k)$. We complement our upper-bound by showing that there exists an infinite family of grids such that any RPM must have $Ω(k^{2})$ vertices. (2) Given a weighted undirected graph $G=(V,E)$ and terminal vertices $K$ with $|K|=k$, an exact (vertex) cut sparsifier of $G$ is a graph $H$ with $K \subset V_H$ that preserves the value of minimum-cuts separating any bipartition of $K$. We show that planar graphs with all the $k$ terminals lying on the same face admit exact cut sparsifiers of size $O(k^{2})$ that are also planar. Our result extends to flow and distance sparsifiers. It improves the previous best-known bound of $O(k^22^{2k})$ for cut and flow sparsifiers by an exponential factor, and matches an $Ω(k^2)$ lower-bound for this class of graphs.
description: Extended abstract appeared in proceedings of ESA 2017
Reentrant Phase Diagram of $\rm{Yb_2Ti_2O_7}$ in $\langle 111 \rangle$ Magnetic Field
Creators: name: Scheie, A.
name: Kindervater, J.
name: Säubert, S.
name: Duvinage, C.
name: Pfleiderer, C.
name: Changlani, H. J.
name: Zhang, S.
name: Harriger, L.
name: Arpino, K.
name: Koohpayeh, S. M.
name: Tchernyshyov, O.
name: Broholm, C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a magnetic phase diagram of rare-earth pyrochlore $\rm{Yb_2Ti_2O_7}$ in a $\langle 111 \rangle$ magnetic field. Using heat capacity, magnetization, and neutron scattering data, we show an unusual field-dependence of a first-order phase boundary, wherein a small applied field increases the ordering temperature. The zero-field ground state has ferromagnetic domains, while the spins polarize along $\langle 111 \rangle$ above 0.65T. A classical Monte Carlo analysis of published Hamiltonians does account for the critical field in the low T limit. However, this analysis fails to account for the large bulge in the reentrant phase diagram, suggesting that either long-range interactions or quantum fluctuations govern low field properties.
description: 5 pages, 5 pages supplementary information
A regularized second-order correlation method from Green's function theory
Creators: name: Coveney, Christopher J. N.
name: Tew, David P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scalable single-particle framework to treat electronic correlation in molecules and materials motivated by Green's function theory. We derive a size-extensive Brillouin-Wigner perturbation theory from the single-particle Green's function by introducing the Goldstone self-energy. This new ground state correlation energy, referred to as Quasi-Particle MP2 theory (QPMP2), avoids the characteristic divergences present in both second-order Møller-Plesset perturbation theory and Coupled Cluster Singles and Doubles within the strongly correlated regime. We show that the exact ground state energy and properties of the Hubbard dimer are reproduced by QPMP2 and demonstrate the advantages of the approach for the six-, eight- and ten-site Hubbard models where the metal-to-insulator transition is qualitatively reproduced, contrasting with the complete failure of traditional methods. We apply this formalism to characteristic strongly correlated molecular systems and show that QPMP2 provides an efficient, size-consistent regularization of MP2.
Gluon Spectrum in Quark-Gluon Plasma under Strong Magnetic Fields
Creators: name: Hattori, Koichi
name: Satow, Daisuke
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We obtain the general expression of the gluon propagator at finite temperature ($T$) and in a magnetic field ($B$), for the case that the four transverse tensor structures appear in the gluon self-energy. By using this expression and a specific form of the one-loop gluon self-energy in the lowest Landau level approximation, we analyze the gluon spectrum in the strong magnetic field limit. As a result, we find that there exist two collective excitations of which the energies are of the order of $p\sim gT$ with $g$ being the coupling constant. One of the two excitations enjoys properties quite different from those of the collective excitations at $B=0$ which have been discussed by using the hard thermal loop approximation. We also discuss the static and dynamical screening effects, which are expected to be important for computation of transport coefficients in strong magnetic fields.
description: 12 pages, 8 figures; v2: Sec. II largely modified so that we do not make general discussion assuming general tenor structure for gluon self-energy. Discussion on running coupling added in Sec. III; v3: abstract modified
Why Do Facial Deepfake Detectors Fail?
Creators: name: Le, Binh
name: Tariq, Shahroz
name: Abuadbba, Alsharif
name: Moore, Kristen
name: Woo, Simon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent rapid advancements in deepfake technology have allowed the creation of highly realistic fake media, such as video, image, and audio. These materials pose significant challenges to human authentication, such as impersonation, misinformation, or even a threat to national security. To keep pace with these rapid advancements, several deepfake detection algorithms have been proposed, leading to an ongoing arms race between deepfake creators and deepfake detectors. Nevertheless, these detectors are often unreliable and frequently fail to detect deepfakes. This study highlights the challenges they face in detecting deepfakes, including (1) the pre-processing pipeline of artifacts and (2) the fact that generators of new, unseen deepfake samples have not been considered when building the defense models. Our work sheds light on the need for further research and development in this field to create more robust and reliable detectors.
description: 5 pages, ACM ASIACCS 2023