cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 7 of Leveraging gene correlations in single cell transcriptomic data
Creators: name: Silkwood, Kai
name: Dollinger, Emmanuel
name: Gervin, Joshua
name: Atwood, Scott
name: Nie, Qing
name: Lander, Arthur D.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics

description: Additional file 7: Figure S5. Gene communities C, and D from cell cluster 1.2. Genes and links are highlighted as in Fig. S4.
Hamiltonian structure of rational isomonodromic deformation systems
Creators: name: Bertola, M.
name: Harnad, J.
name: Hurtubise, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34M56, 34M56, 37Kxx, 37Jxx, 14Dxx, 35Qxx, 32Sxx

description: The Hamiltonian approach to isomonodromic deformation systems is extended to include generic rational covariant derivative operators on the Riemann sphere with irregular singularities of arbitrary Poincaré rank. The space of rational connections with given pole degrees carries a natural Poisson structure corresponding to the standard classical rational R-matrix structure on the dual space $L^*gl(r)$ of the loop algebra $Lgl(r)$. Nonautonomous isomonodromic counterparts of the isospectral systems generated by spectral invariants are obtained by identifying the deformation parameters as Casimir functions on the phase space. These are shown to coincide with the higher Birkhoff invariants determining the local asymptotics near to irregular singular points, together with the pole loci. Infinitesimal isomonodromic deformations are shown to be generated by the sum of the Hamiltonian vector field and an explicit derivative vector field that is transversal to the symplectic foliation. The Casimir elements serve as coordinates complementing those along the symplectic leaves, extended by the exponents of formal monodromy, defining a local symplectomorphism between them. The explicit derivative vector fields preserve the Poisson structure and define a flat transversal connection, spanning an integrable distribution whose leaves, locally, may be identified as the orbits of a free abelian group. The projection of the infinitesimal isomonodromic deformations vector fields to the quotient manifold under this action gives the commuting Hamiltonian vector fields corresponding to the spectral invariants dual to the Birkhoff invariants and the pole loci.
description: V6. 46 pages. To comply with J. Math. Phys. formatting requirements, the abstract was reduced to one paragraph and the table of contents and highlighting of theorems were removed. Comparison comments were added after Theorems 3.2 and 3.3. The summation limits were made more explicit in eqs. (3.15), (3.17). Ref. [19] was corrected
Néel-XXZ state overlaps: odd particle numbers and Lieb-Liniger scaling limit
Creators: name: Brockmann, Michael
name: De Nardis, Jacopo
name: Wouters, Bram
name: Caux, Jean-Sébastien
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We specialize a recently-proposed determinant formula for the overlap of the zero-momentum Néel state with Bethe states of the spin-1/2 XXZ chain to the case of an odd number of downturned spins, showing that it is still of "Gaudin-like" form, similar to the case of an even number of down spins. We generalize this result to the overlap of $q$-raised Néel states with parity-invariant Bethe states lying in a nonzero magnetization sector. The generalized determinant expression can then be used to derive the corresponding determinants and their prefactors in the scaling limit to the Lieb-Liniger (LL) Bose gas. The odd number of down spins directly translates to an odd number of bosons. We furthermore give a proof that the Néel state has no overlap with non-parity-invariant Bethe states. This is based on a determinant expression for overlaps with general Bethe states that was obtained in the context of the XXZ chain with open boundary conditions. The statement that overlaps with non-parity-invariant Bethe states vanish is still valid in the scaling limit to LL which means that the BEC state has zero overlap with non-parity-invariant LL Bethe states.
description: 21 pages
Testing the Cosmological Principle with CatWISE Quasars: A Bayesian Analysis of the Number-Count Dipole
Creators: name: Dam, Lawrence
name: Lewis, Geraint F.
name: Brewer, Brendon J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Cosmological Principle, that the Universe is homogeneous and isotropic on sufficiently large scales, underpins the standard model of cosmology. However, a recent analysis of 1.36 million infrared-selected quasars has identified a significant tension in the amplitude of the number-count dipole compared to that derived from the CMB, thus challenging the Cosmological Principle. Here we present a Bayesian analysis of the same quasar sample, testing various hypotheses using the Bayesian evidence. We find unambiguous evidence for the presence of a dipole in the distribution of quasars with a direction that is consistent with the dipole identified in the CMB. However, the amplitude of the dipole is found to be 2.7 times larger than that expected from the conventional kinematic explanation of the CMB dipole, with a statistical significance of $5.7σ$. To compare these results with theoretical expectations, we sharpen the $Λ$CDM predictions for the probability distribution of the amplitude, taking into account a number of observational and theoretical systematics. In particular, we show that the presence of the Galactic plane mask causes a considerable loss of dipole signal due to a leakage of power into higher multipoles, exacerbating the discrepancy in the amplitude. By contrast, we show using probabilistic arguments that the source evolution of quasars improves the discrepancy, but only mildly so. These results support the original findings of an anomalously large quasar dipole, independent of the statistical methodology used.
description: 15 pages, 7 figures; accepted for publication in MNRAS
MPEC 2023-G26 : 2023 GD
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 GD

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Additional file 2 of Leveraging gene correlations in single cell transcriptomic data
Creators: name: Silkwood, Kai
name: Dollinger, Emmanuel
name: Gervin, Joshua
name: Atwood, Scott
name: Nie, Qing
name: Lander, Arthur D.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics

description: Additional file 2: Appendix. Mathematical formulae and derivations
SceneGATE: Scene-Graph based co-Attention networks for TExt visual question answering
Creators: name: Cao, Feiqi
name: Luo, Siwen
name: Nunez, Felipe
name: Wen, Zean
name: Poon, Josiah
name: Han, Caren
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Most TextVQA approaches focus on the integration of objects, scene texts and question words by a simple transformer encoder. But this fails to capture the semantic relations between different modalities. The paper proposes a Scene Graph based co-Attention Network (SceneGATE) for TextVQA, which reveals the semantic relations among the objects, Optical Character Recognition (OCR) tokens and the question words. It is achieved by a TextVQA-based scene graph that discovers the underlying semantics of an image. We created a guided-attention module to capture the intra-modal interplay between the language and the vision as a guidance for inter-modal interactions. To make explicit teaching of the relations between the two modalities, we proposed and integrated two attention modules, namely a scene graph-based semantic relation-aware attention and a positional relation-aware attention. We conducted extensive experiments on two benchmark datasets, Text-VQA and ST-VQA. It is shown that our SceneGATE method outperformed existing ones because of the scene graph and its attention modules.
description: Published in Robotics (Q1, SCI indexed Journal): https://www.mdpi.com/2218-6581/12/4/114
Quench-induced delocalization
Creators: name: Doggen, Elmer V. H.
name: Kinnunen, Jami J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the evolution of an initially localized wave packet after a sudden change in the Hamiltonian, i.e.\ a quench. When both bound and scattering eigenstates exist in the post-quench Hamiltonian, one might expect partial delocalization of the wave packet to ensue. Here we show that if the quench consists of a sudden switching-off of short-range inter-particle interactions, then Tan's universal relations guarantee delocalization through the high-momentum tail of the momentum distribution. Furthermore, we consider the influence of the range of the interaction and show how a finite range alters the coupling to highly excited states. We illustrate our results using numerical simulations of externally trapped particles in one dimension. If the external potential is both disordered and correlated, then the interaction quench leads to transport via delocalized states, showing that localization in disordered systems is sensitive to non-adiabatic changes in the interactions between particles.
description: 12 pages, 9 figures
Urdu Fiction Mein Dastaanon ki Riwayat
Creators: name: Dalal, Azmat
Publisher: name: figshare
Year: 2023
Subjects: Creative and professional writing not elsewhere classified

description: داستانیں فکشن کی سب سے اہم کڑی ہے۔ قصہ گوئی ہمارے تہذیب و معاشرے کا ایک اہم حصہ رہے ہیں۔ داستانوں کی خیالی دنیا اکیسویں صدی میں بھی قائم و دائم نظر ۤآتی ہے۔
Digital Pixel Test Structures implemented in a 65 nm CMOS process
Creators: name: Rinella, Gianluca Aglieri
name: Andronic, Anton
name: Antonelli, Matias
name: Aresti, Mauro
name: Baccomi, Roberto
name: Becht, Pascal
name: Beole, Stefania
name: Braach, Justus
name: Buckland, Matthew Daniel
name: Buschmann, Eric
name: Camerini, Paolo
name: Carnesecchi, Francesca
name: Cecconi, Leonardo
name: Charbon, Edoardo
name: Contin, Giacomo
name: Dannheim, Dominik
name: de Melo, Joao
name: Deng, Wenjing
name: di Mauro, Antonello
name: Hasenbichler, Jan
name: Hillemanns, Hartmut
name: Hong, Geun Hee
name: Isakov, Artem
name: Junique, Antoine
name: Kluge, Alex
name: Kotliarov, Artem
name: Křížek, Filip
name: Lautner, Lukas
name: Mager, Magnus
name: Marras, Davide
name: Martinengo, Paolo
name: Masciocchi, Silvia
name: Menzel, Marius Wilm
name: Munker, Magdalena
name: Piro, Francesco
name: Rachevski, Alexandre
name: Rebane, Karoliina
name: Reidt, Felix
name: Russo, Roberto
name: Sanna, Isabella
name: Sarritzu, Valerio
name: Senyukov, Serhiy
name: Snoeys, Walter
name: Sonneveld, Jory
name: Šuljić, Miljenko
name: Svihra, Peter
name: Tiltmann, Nicolas
name: Usai, Gianluca
name: Van Beelen, Jacob Bastiaan
name: Vassilev, Mirella Dimitrova
name: Vernieri, Caterina
name: Villani, Anna
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The ALICE ITS3 (Inner Tracking System 3) upgrade project and the CERN EP R&D on monolithic pixel sensors are investigating the feasibility of the Tower Partners Semiconductor Co. 65 nm process for use in the next generation of vertex detectors. The ITS3 aims to employ wafer-scale Monolithic Active Pixel Sensors thinned down to 20 to 40 um and bent to form truly cylindrical half barrels. Among the first critical steps towards the realisation of this detector is to validate the sensor technology through extensive characterisation both in the laboratory and with in-beam measurements. The Digital Pixel Test Structure (DPTS) is one of the prototypes produced in the first sensor submission in this technology and has undergone a systematic measurement campaign whose details are presented in this article. The results confirm the goals of detection efficiency and non-ionising and ionising radiation hardness up to the expected levels for ALICE ITS3 and also demonstrate operation at +20 C and a detection efficiency of 99% for a DPTS irradiated with a dose of $10^{15}$ 1 MeV n$_{\mathrm{eq}}/$cm$^2$. Furthermore, spatial, timing and energy resolutions were measured at various settings and irradiation levels.
description: v4: Corrected Table 1. v3: Implemented reviewers' comments. v2: Updated threshold calibration method. Implemented colorblind friendly color palette in all figures. Updated references
Status of the Horizon 2020 project on COre monitoring Techniques and EXperimental validation and demonstration (CORTEX)
Creators: name: Demazière, Christophe
Publisher: name: Zenodo
Year: 2018

description: Overall presentation of the CORTEX project.
description: The CORTEX project received funding from the Euratom Research and Training Programme 2014-2018 under grant agreement No 754316.
Enhancing Multi-modal and Multi-hop Question Answering via Structured Knowledge and Unified Retrieval-Generation
Creators: name: Yang, Qian
name: Chen, Qian
name: Wang, Wen
name: Hu, Baotian
name: Zhang, Min
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Multi-modal multi-hop question answering involves answering a question by reasoning over multiple input sources from different modalities. Existing methods often retrieve evidences separately and then use a language model to generate an answer based on the retrieved evidences, and thus do not adequately connect candidates and are unable to model the interdependent relations during retrieval. Moreover, the pipelined approaches of retrieval and generation might result in poor generation performance when retrieval performance is low. To address these issues, we propose a Structured Knowledge and Unified Retrieval-Generation (SKURG) approach. SKURG employs an Entity-centered Fusion Encoder to align sources from different modalities using shared entities. It then uses a unified Retrieval-Generation Decoder to integrate intermediate retrieval results for answer generation and also adaptively determine the number of retrieval steps. Extensive experiments on two representative multi-modal multi-hop QA datasets MultimodalQA and WebQA demonstrate that SKURG outperforms the state-of-the-art models in both source retrieval and answer generation performance with fewer parameters. Our code is available at https://github.com/HITsz-TMG/SKURG.
description: Accepted by ACM Multimedia 2023
Multipartite $d-$level GHZ bases associated with generalized braid matrices
Creators: name: Wang, Gangcheng
name: Sun, Chunfang
name: Wu, Chunfeng
name: Liu, Bo
name: Zhang, Yan
name: Xue, Kang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the generalized braid relation ($d-$level $N-$body braid relation) and its application to quantum entanglement. By means of finite-dimensional representations of Heisenberg-Weyl algebra, a set of $d^{N}\times d^{N}$ unitary matrix representations satisfying the generalized braid relation can be constructed. Such generalized braid matrices can entangle $d-$level $N-$partite quantum states. Acting the generalized braid matrices on the standard basis, one can obtain a set of maximally entangled basis. Further study shows that such entangled basis can be viewed as the $d-$level $N-$partite Greenberger-Horne-Zeilinger (GHZ) basis.
description: 5 pages
Additional file 3 of Leveraging gene correlations in single cell transcriptomic data
Creators: name: Silkwood, Kai
name: Dollinger, Emmanuel
name: Gervin, Joshua
name: Atwood, Scott
name: Nie, Qing
name: Lander, Arthur D.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics

description: Additional file 3: Figure S1. Significance of uncorrected Pearson correlation coefficients, as calculated by BigSur versus the Fisher formula, binned by gene expression. scRNAseq data were as described in Fig. 3. Data points representing pairs of genes were divided into 21 bins based on the mean expression levels of each gene, and the results for each bin were plotted as described in Fig. 3C. The abscissa shows PCCwhile the ordinate gives the negative log10 of p values determined by BigSur, i.e., larger values mean greater statistical significance. Orange and gray shading indicate gene pairs judged significant by BigSur. Blue and orange show gene pairs that would have been judged statistically significant by applying the Fisher formula to the PCC, using the same p-value threshold as used by BigSur. The blue region contains gene pairs judged significant by the Fisher formula only, while the unshaded region shows gene pairs not significant by either method. Numbers in the lower right corner of each panel are the total numbers of possible correlations, statistically significant correlations according to the Fisher formula, and statistically significant correlations according to BigSur.
Performance of Uncoded Implementation of Grover's Algorithm on Today's Quantum Processors
Creators: name: Kaderi, Yunos El
name: Honecker, Andreas
name: Andriyanova, Iryna
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This work tests the performance of Grover's search circuits on some IBM superconducting quantum devices in case of the size of search space $N=2^4$ and $N=2^5$. Ideally, we expect to get an outcome probability distribution that is clearly peaked at the goal (marked) state. However, the quantum circuit executed on real devices is vulnerable to noise which leads to fluctuations in the results. The contributions of the paper are therefore the following: a) it presents two new Grover's search circuits for $N=16$ which were not yet reported in the state of the art; b) it shows performance difference between simulation results and results obtained on real devices; c) it shows the need of adding error-correction on the circuit for $N\ge 2^5$.
description: Submitted to IEEE Information Theory Workshop 2023; 5 pages
Electroweak Symmetry Breaking via QCD
Creators: name: Kubo, Jisuke
name: Lim, Kher Sham
name: Lindner, Manfred
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose a new mechanism to generate the electroweak scale within the framework of QCD, which is extended to include conformally invariant scalar degrees of freedom belonging to a larger irreducible representation of $SU(3)_c$. The electroweak symmetry breaking is triggered dynamically via the Higgs portal by the condensation of the colored scalar field around 1 TeV. The mass of the colored boson is restricted to be 350 GeV $\lesssim m_S\lesssim $ 3 TeV, with the upper bound obtained from perturbative renormalization group evolution. This implies that the colored boson can be produced at LHC. If the colored boson is electrically charged, the branching fraction of the Higgs decaying into two photons can slightly increase, and moreover, it can be produced at future linear colliders. Our idea of non-perturbative EW scale generation can serve as a new starting point for more realistic model building in solving the hierarchy problem.
description: 5 pages, 3 figures. Title changed, references added, matches version published in PRL
Secularly growing loop corrections in strong electric fields
Creators: name: Akhmedov, E. T.
name: Astrakhantsev, N.
name: Popov, F. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate one--loop corrections to the vertexes and propagators of photons and charged particles in the strong electric field backgrounds. We use the Schwinger--Keldysh diagrammatic technique. We observe that photon's Keldysh propagator receives growing with time infrared contribution. As the result, loop corrections are not suppressed in comparison with tree--level contribution. This effect substantially changes the standard picture of the pair production. To sum up leading IR corrections from all loops we consider the infrared limit of the Dyson--Schwinger equations and reduce them to a single kinetic equation.
description: 16 pages, no figures; Minor corrections
Galaxy and Mass Assembly (GAMA): The halo mass of galaxy groups from maximum-likelihood weak lensing
Creators: name: Han, Jiaxin
name: Eke, Vincent R.
name: Frenk, Carlos S.
name: Mandelbaum, Rachel
name: Norberg, Peder
name: Schneider, Michael D.
name: Peacock, John A.
name: Jing, Yipeng
name: Baldry, Ivan
name: Bland-Hawthorn, Joss
name: Brough, Sarah
name: Brown, Michael J. I.
name: Liske, Jochen
name: Loveday, Jon
name: Robotham, Aaron S. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a maximum-likelihood weak lensing analysis of the mass distribution in optically selected spectroscopic Galaxy Groups (G$^3$Cv5) in the Galaxy And Mass Assembly (GAMA) survey, using background Sloan Digital Sky Survey (SDSS) photometric galaxies. The scaling of halo mass, $M_h$, with various group observables is investigated. Our main results are: 1) the measured relations of halo mass with group luminosity, virial volume and central galaxy stellar mass, $M_\star$, agree very well with predictions from mock group catalogues constructed from a GALFORM semi-analytical galaxy formation model implemented in the Millennium $Λ$CDM N-body simulation; 2) the measured relations of halo mass with velocity dispersion and projected half-abundance radius show weak tension with mock predictions, hinting at problems in the mock galaxy dynamics and their small scale distribution; 3) the median $M_h|M_\star$ measured from weak lensing depends more sensitively on the lognormal dispersion in $M_\star$ at fixed $M_h$ than it does on the median $M_\star|M_h$. Our measurements suggest an intrinsic dispersion of $σ_{\log(M_\star)}\sim 0.15$; 4) Comparing our mass estimates with those in the catalogue, we find that the G$^3$Cv5 mass can give biased results when used to select subsets of the group sample. Of the various new halo mass estimators that we calibrate using our weak lensing measurements, group luminosity is the best single-proxy estimator of group mass.
description: MNRAS accepted
Measuring deviations from the Kerr geometry with black hole ringdown
Creators: name: Dey, Kallol
name: Barausse, Enrico
name: Basak, Soumen
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black holes in General Relativity are famously characterized by two "hairs" only, the mass and the spin of the Kerr spacetime. Theories extending General Relativity, however, allow in principle for additional black hole charges, which will generally modify the multipole structure of the Kerr solution. Here, we show that gravitational wave observations of the post-merger ringdown signal from black hole binaries may permit measuring these additional "hairs". We do so by considering spacetime geometries differing from the Kerr one at the level of the quadrupole moment, and computing the differences of their quasinormal mode frequencies from the Kerr ones in the eikonal limit. We then perform a Bayesian analysis with current and future gravitational wave data and compute posterior constraints for the quadrupole deviation away from Kerr. We find that the inclusion of higher modes, which are potentially observable by future detectors, will allow for constraining deviations from the Kerr quadrupole at percent level.
description: 15 pages, 6 figures, matches version published in PRD
MPEC 2023-G27 : 2023 GE
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 GE

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Outer partial actions and partial skew group rings
Creators: name: Nystedt, Patrik
name: Öinert, Johan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 16S35, 16W50, 37B05, 16D25, 37B99, 54H15, 54H20

description: We extend the classicial notion of an outer action $α$ of a group $G$ on a unital ring $A$ to the case when $α$ is a partial action on ideals, all of which have local units. We show that if $α$ is an outer partial action of an abelian group $G$, then its associated partial skew group ring $A \star_αG$ is simple if and only if $A$ is $G$-simple. This result is applied to partial skew group rings associated with two different types of partial dynamical systems.
description: 16 pages
Unifying Approaches to Chiral Bosons
Creators: name: Arvanitakis, Alex S.
name: Cole, Lewis T.
name: Hulik, Ondrej
name: Sevrin, Alexander
name: Thompson, Daniel C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Chiral bosons, or self-dual p-form fields, are ubiquitous in string theoretic contexts but are challenging to treat. Lagrangian constructions invariably introduce a complexity be it auxiliary fields or sacrificing Lorentz invariance. In this note we show how to pass between such different approaches to chiral bosons starting from a Chern Simons point of view to recover formulations of Pasti, Sorokin and Tonin and of Mkrtchyan. This leads to a novel generalisation of the latter to include non-Abelian chiral bosons in 2-dimensions, and generalisations to include twisted self-duality which are relevant in T-duality symmetric approaches to string theory. Our approach also shows how global affine symmetries of two- and higher-dimensional chiral bosons emerge from broken Chern-Simons gauge transformations on the boundary.
description: 23 pages. Minor updates, matches published version
GCS-Q: Quantum Graph Coalition Structure Generation
Creators: name: Venkatesh, Supreeth Mysore
name: Macaluso, Antonio
name: Klusch, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The problem of generating an optimal coalition structure for a given coalition game of rational agents is to find a partition that maximizes their social welfare and is known to be NP-hard. This paper proposes GCS-Q, a novel quantum-supported solution for Induced Subgraph Games (ISGs) in coalition structure generation. GCS-Q starts by considering the grand coalition as initial coalition structure and proceeds by iteratively splitting the coalitions into two nonempty subsets to obtain a coalition structure with a higher coalition value. In particular, given an $n$-agent ISG, the GCS-Q solves the optimal split problem $\mathcal{O} (n)$ times using a quantum annealing device, exploring $\mathcal{O}(2^n)$ partitions at each step. We show that GCS-Q outperforms the currently best classical solvers with its runtime in the order of $n^2$ and an expected worst-case approximation ratio of $93\%$ on standard benchmark datasets.
description: 6 pages, 3 figures
MPEC 2023-G28 : 2023 GF
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 GF

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Une étude comparative des différentes approches de sensibilisation aux médias sociaux chez les adolescents
title: Une étude comparative des différentes approches de sensibilisation aux médias sociaux chez les adolescents
titleType: AlternativeTitle
Creators: name: Scalisi, Andrea
Publisher: name: Unknown
Year: 0
Subjects: subject: Médias sociaux
subject: Adolescents
subject: Sensibilisation
subject: Données
subject: Effets
subject: Perception

description: Le but de ce travail est de comparer l’efficacité de deux méthodes de sensibilisation aux médias sociaux chez les adolescents. Chaque méthode fait usage de données, et est testée par le biais d’une intervention d’environ une heure. Un pré-test a lieu une semaine avant l’intervention, un post-test a lieu immédiatement après, et un follow-up a lieu un mois après. Trois classes de 11VG ont donc participé à cette étude : un groupe nommé « externe » pour la première méthode, un groupe nommé « contraste » pour la deuxième méthode et un groupe de contrôle. La première intervention dans le groupe « externe » est purement objective et fait usage de données externes uniquement. Les élèves sont confrontés à des données externes et cherchent des informations dans des articles. L’intervention dans le groupe « contraste » est subjective : les élèves sont amenés à raisonner à l’aide de leurs propres données mises en contraste avec des données externes. Les élèves de ce dernier groupe ne lisent pas d’articles. Les résultats démontrent une augmentation significative du désir de diminuer le temps d’écran pour le groupe « externe », et une augmentation marginale pour le groupe « contraste ». Ce dernier groupe a par ailleurs démontré une diminution significative du temps d’écran, a développé une perception significativement plus pessimiste des effets des réseaux sociaux sur soi-même, mais n’a démontré aucun changement de perception quant aux effets des réseaux sociaux sur les autres personnes. Le groupe « externe » n’a indiqué aucun changement significatif de temps d’écran, a développé une perception significativement plus positive des effets des réseaux sociaux sur les autres personnes, mais n’a démontré aucun changement de perception quant aux effets des réseaux sociaux sur soi-même. A noter que lors des analyses préliminaires, le groupe « contraste » démontrait déjà, dès le pré-test, une plus haute volonté de diminuer son temps d’écran, un moins bon sentiment de contrôle, et un temps d’écran significativement supérieur aux deux autres groupes.
Fully 3D Implementation of the End-to-end Deep Image Prior-based PET Image Reconstruction Using Block Iterative Algorithm
Creators: name: Hashimoto, Fumio
name: Onishi, Yuya
name: Ote, Kibo
name: Tashima, Hideaki
name: Yamaya, Taiga
Publisher: name: arXiv
Year: 2022
Subjects: subject: Medical Physics (physics.med-ph)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Deep image prior (DIP) has recently attracted attention owing to its unsupervised positron emission tomography (PET) image reconstruction, which does not require any prior training dataset. In this paper, we present the first attempt to implement an end-to-end DIP-based fully 3D PET image reconstruction method that incorporates a forward-projection model into a loss function. To implement a practical fully 3D PET image reconstruction, which could not be performed due to a graphics processing unit memory limitation, we modify the DIP optimization to block-iteration and sequentially learn an ordered sequence of block sinograms. Furthermore, the relative difference penalty (RDP) term was added to the loss function to enhance the quantitative PET image accuracy. We evaluated our proposed method using Monte Carlo simulation with [$^{18}$F]FDG PET data of a human brain and a preclinical study on monkey brain [$^{18}$F]FDG PET data. The proposed method was compared with the maximum-likelihood expectation maximization (EM), maximum-a-posterior EM with RDP, and hybrid DIP-based PET reconstruction methods. The simulation results showed that the proposed method improved the PET image quality by reducing statistical noise and preserved a contrast of brain structures and inserted tumor compared with other algorithms. In the preclinical experiment, finer structures and better contrast recovery were obtained by the proposed method. This indicated that the proposed method can produce high-quality images without a prior training dataset. Thus, the proposed method is a key enabling technology for the straightforward and practical implementation of end-to-end DIP-based fully 3D PET image reconstruction.
description: 9 pages, 10 figures
Additional file 8 of Leveraging gene correlations in single cell transcriptomic data
Creators: name: Silkwood, Kai
name: Dollinger, Emmanuel
name: Gervin, Joshua
name: Atwood, Scott
name: Nie, Qing
name: Lander, Arthur D.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics

description: Additional file 8: Figure S6. Gene communities E, F, G and H from cell cluster 1.2. Genes and links are highlighted as in Fig. S4.
A systematic study of finite BRST-BFV transformations in $Sp(2)$-extended generalized Hamiltonian formalism
Creators: name: Batalin, Igor A.
name: Lavrov, Peter M.
name: Tyutin, Igor V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study systematically finite BRST-BFV transformations in $Sp(2)$-extended generalized Hamiltonian formalism. We present explicitly their Jacobians and the form of a solution to the compensation equation determining the functional field dependence of finite Fermionic parameters, necessary to generate arbitrary finite change of gauge-fixing functions in the path integral.
description: 12 pages; published version. arXiv admin note: text overlap with arXiv:1404.4154
FFNeRV: Flow-Guided Frame-Wise Neural Representations for Videos
Creators: name: Lee, Joo Chan
name: Rho, Daniel
name: Ko, Jong Hwan
name: Park, Eunbyung
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Neural fields, also known as coordinate-based or implicit neural representations, have shown a remarkable capability of representing, generating, and manipulating various forms of signals. For video representations, however, mapping pixel-wise coordinates to RGB colors has shown relatively low compression performance and slow convergence and inference speed. Frame-wise video representation, which maps a temporal coordinate to its entire frame, has recently emerged as an alternative method to represent videos, improving compression rates and encoding speed. While promising, it has still failed to reach the performance of state-of-the-art video compression algorithms. In this work, we propose FFNeRV, a novel method for incorporating flow information into frame-wise representations to exploit the temporal redundancy across the frames in videos inspired by the standard video codecs. Furthermore, we introduce a fully convolutional architecture, enabled by one-dimensional temporal grids, improving the continuity of spatial features. Experimental results show that FFNeRV yields the best performance for video compression and frame interpolation among the methods using frame-wise representations or neural fields. To reduce the model size even further, we devise a more compact convolutional architecture using the group and pointwise convolutions. With model compression techniques, including quantization-aware training and entropy coding, FFNeRV outperforms widely-used standard video codecs (H.264 and HEVC) and performs on par with state-of-the-art video compression algorithms.
description: Our project page including code is available at https://maincold2.github.io/ffnerv/
Experimental Quantum Communication Overcomes the Rate-loss Limit without Global Phase Tracking
Creators: name: Zhou, Lai
name: Lin, Jinping
name: Xie, Yuan-Mei
name: Lu, Yu-Shuo
name: Jing, Yumang
name: Yin, Hua-Lei
name: Yuan, Zhiliang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Secure key rate (SKR) of point-point quantum key distribution (QKD) is fundamentally bounded by the rate-loss limit. Recent breakthrough of twin-field (TF) QKD can overcome this limit and enables long distance quantum communication, but its implementation necessitates complex global phase tracking and requires strong phase references which not only add to noise but also reduce the duty cycle for quantum transmission. Here, we resolve these shortcomings, and importantly achieve even higher SKRs than TF-QKD, via implementing an innovative but simpler measurement-device-independent QKD which realizes repeater-like communication through asynchronous coincidence pairing. Over 413 and 508 km optical fibers, we achieve finite-size SKRs of 590.61 and 42.64 bit/s, which are respectively 1.80 and 4.08 times of their corresponding absolute rate limits. Significantly, the SKR at 306 km exceeds 5 kbit/s and meets the bitrate requirement for live one-time-pad encryption of voice communication. Our work will bring forward economical and efficient intercity quantum-secure networks.
description: 29 pages, 10 figures, 3 tables
On the reduction criterion for random quantum states
Creators: name: Jivulescu, Maria Anastasia
name: Lupa, Nicolae
name: Nechita, Ion
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 60B20, 81P45

description: In this paper we study the reduction criterion for detecting entanglement of large dimensional bipartite quantum systems. We first obtain an explicit formula for the moments of a random quantum state to which the reduction criterion has been applied. We show that the empirical eigenvalue distribution of this random matrix converges strongly to a limit that we compute, in three different asymptotic regimes. We then employ tools from free probability to study the asymptotic positivity of the reduction operators. Finally, we compare the reduction criterion with other entanglement criteria, via thresholds.
Additional file 10 of Leveraging gene correlations in single cell transcriptomic data
Creators: name: Silkwood, Kai
name: Dollinger, Emmanuel
name: Gervin, Joshua
name: Atwood, Scott
name: Nie, Qing
name: Lander, Arthur D.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics

description: Additional file 10: Figure S8. Graphical representation of positive correlations among genes significantly upregulated in lung epithelial cells treated with IL13 [76]. Of 419 upregulated genes, 313 form a single connected community in the treated cells, whereas 45 of those correlate in the untreated group. Green lines represent statistically significant positive correlations. Transcription factors are marked with blue text and a yellow box.
Progress on the QCD deconfinement critical point for $N_\text{f}=2$ staggered fermions
Creators: name: Kaiser, Reinhold
name: Philipsen, Owe
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The global center symmetry of quenched QCD at zero baryonic chemical potential is broken spontaneously at a critical temperature $T_c$ leading to a first-order phase transition. Including heavy dynamical quarks breaks the center symmetry explicitly and weakens the first-order phase transition for decreasing quark masses until it turns into a smooth crossover at a $Z(2)$-critical point. We investigate the $Z(2)$-critical quark mass value towards the continuum limit for $N_\text{f}=2$ flavors using lattice QCD in the staggered formulation. As part of a continued study, we present results from Monte-Carlo simulations on $N_τ=8,10$ lattices. Several aspect ratios and quark mass values were simulated in order to obtain the critical mass from a fit of the Polyakov loop to a kurtosis finite size scaling formula. Moreover, the possibility to develop a Ginzburg-Landau effective theory around the $Z(2)$-critical point is explored.
description: 9 pages, 4 figures, contribution to the 39th International Symposium on Lattice Field Theory (LATTICE2022). arXiv admin note: text overlap with arXiv:2212.14451
Emergent Spacetime in Stochastically Evolving Dimensions
Creators: name: Afshordi, Niayesh
name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Changing the dimensionality of the space-time at the smallest and largest distances has manifold theoretical advantages. If the space is lower dimensional in the high energy regime, then there are no ultraviolet divergencies in field theories, it is possible to quantize gravity, and the theory of matter plus gravity is free of divergencies or renormalizable. If the space is higher dimensional at cosmological scales, then some cosmological problems (including the cosmological constant problem) can be attacked from a completely new perspective. In this paper, we construct an explicit model of "evolving dimensions" in which the dimensions open up as the temperature of the universe drops. We adopt the string theory framework in which the dimensions are fields that live on the string worldsheet, and add temperature dependent mass terms for them. At the Big Bang, all the dimensions are very heavy and are not excited. As the universe cools down, dimensions open up one by one. Thus, the dimensionality of the space we live in depends on the energy or temperature that we are probing. In particular, we provide a kinematic Brandenberger-Vafa argument for how a discrete {\it causal set}, and eventually a continuum $(3+1)$-dim spacetime along with Einstein gravity emerge in the Infrared from the worldsheet action. The $(3+1)$-dim Planck mass and the string scale become directly related, {\it without any} compactification. Amongst other predictions, we argue that LHC might be blind to new physics even if it comes at the TeV scale. In contrast, cosmic ray experiments, especially those that can register the very beginning of the shower, and collisions with high multiplicity and density of particles, might be sensitive to the dimensional cross-over.
description: Published in Phys.Lett. B739 (2014) 117-124
Generative Adversarial Classification Network with Application to Network Traffic Classification
Creators: name: Ghanavi, Rozhina
name: Liang, Ben
name: Tizghadam, Ali
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Large datasets in machine learning often contain missing data, which necessitates the imputation of missing data values. In this work, we are motivated by network traffic classification, where traditional data imputation methods do not perform well. We recognize that no existing method directly accounts for classification accuracy during data imputation. Therefore, we propose a joint data imputation and data classification method, termed generative adversarial classification network (GACN), whose architecture contains a generator network, a discriminator network, and a classification network, which are iteratively optimized toward the ultimate objective of classification accuracy. For the scenario where some data samples are unlabeled, we further propose an extension termed semi-supervised GACN (SSGACN), which is able to use the partially labeled data to improve classification accuracy. We conduct experiments with real-world network traffic data traces, which demonstrate that GACN and SS-GACN can more accurately impute data features that are more important for classification, and they outperform existing methods in terms of classification accuracy.
description: 6 pages, 4 figures, 2 tables
Fractionally Integrated VAR Models with a Fractional Lag Operator and Deterministic Trends: Finite Sample Identification and Two-step Estimation
Creators: name: Tschernig, Rolf
name: Weber, Enzo
name: Weigand, Roland
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: fractional integration, long memory, maximum likelihood estimation, fractional lag operator
subject: 330 Wirtschaft
subject: C32
subject: C51

description: Fractionally integrated vector autoregressive models allow to capture persistence in time series data in a very flexible way. Additional flexibility for the short memory properties of the model can be attained by using the fractional lag perator of Johansen (2008) in the vector autoregressive polynomial. However, it also makes maximum likelihood estimation more diffcult. In this paper we first identify parameter settings for univariate and bivariate models that suffer from poor identification in finite samples and may therefore lead to estimation problems. Second, we propose to investigate the extent of poor identification by using expected log-likelihoods and variations thereof which are faster to simulate than multivariate finite sample distributions of parameter estimates. Third, we provide a line of reasoning that explains the finding from several univariate and bivariate simulation examples that the two-step estimator suggested by Tschernig, Weber, and Weigand (2010) can be more robust with respect to estimating the deterministic components than the maximum likelihood estimator.