cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conformal and covariant Z4 formulation of the Einstein equations: strongly hyperbolic first-order reduction and solution with discontinuous Galerkin schemes
Creators: name: Dumbser, Michael
name: Guercilena, Federico
name: Koeppel, Sven
name: Rezzolla, Luciano
name: Zanotti, Olindo
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a strongly hyperbolic first-order formulation of the Einstein equations based on the conformal and covariant Z4 system (CCZ4) with constraint-violation damping, which we refer to as FO-CCZ4. As CCZ4, this formulation combines the advantages of a conformal and traceless formulation, with the suppression of constraint violations given by the damping terms, but being first order in time and space, it is particularly suited for a discontinuous Galerkin (DG) implementation. The strongly hyperbolic first-order formulation has been obtained by making careful use of first and second-order ordering constraints. A proof of strong hyperbolicity is given for a selected choice of standard gauges via an analytical computation of the entire eigenstructure of the FO-CCZ4 system. The resulting governing partial differential equations system is written in non-conservative form and requires the evolution of 58 unknowns. A key feature of our formulation is that the first-order CCZ4 system decouples into a set of pure ordinary differential equations and a reduced hyperbolic system of partial differential equations that contains only linearly degenerate fields. We implement FO-CCZ4 in a high-order path-conservative arbitrary-high-order-method-using-derivatives (ADER)-DG scheme with adaptive mesh refinement and local time-stepping, supplemented with a third-order ADER-WENO subcell finite-volume limiter in order to deal with singularities arising with black holes. We validate the correctness of the formulation through a series of standard tests in vacuum, performed in one, two and three spatial dimensions, and also present preliminary results on the evolution of binary black-hole systems. To the best of our knowledge, these are the first successful three-dimensional simulations of moving punctures carried out with high-order DG schemes using a first-order formulation of the Einstein equations.
description: 27 pages, 8 figures; v2 matches version published in PRD. Discussion improved and proof of strong hyperbolicity is now given for standard gauges
MeerKAT view of the diffuse radio sources in Abell 3667 and their interactions with the thermal plasma
Creators: name: de Gasperin, F.
name: Rudnick, L.
name: Finoguenov, A.
name: Wittor, D.
name: Akamatsu, H.
name: Bruggen, M.
name: Chibueze, J. O.
name: Clarke, T. E.
name: Cotton, W.
name: Cuciti, V.
name: Dominguez-Fernandez, P.
name: Knowles, K.
name: O'Sullivan, S. P.
name: Sebokolodi, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: During their lifetime, galaxy clusters grow through the accretion of matter from the filaments of the large scale structure and from mergers with other clusters. These mergers release a large amount of energy into the intracluster medium (ICM) through merger shocks and turbulence. These phenomena are associated with the formation of radio sources known as radio relics and radio halos, respectively. Radio relics and halos are unique proxies to study the complex properties of these dynamically active regions of clusters and in general the micro physics of the ICM. Abell 3667 is a spectacular examples of a merging system hosting a large pair of radio relics. Due to its proximity (z=0.0553) and large mass, the system enables the study of these sources to a uniquely high level of detail. We observed Abell 3667 with MeerKAT as part of the MeerKAT Galaxy Cluster Legacy Survey. We used these data to study the large scale emission of the cluster, including its polarisation and spectral properties. We present the most detailed view of the radio relic system in Abell 3667 to date, with a resolution reaching 3 kpc. The relics are filled with a network of filaments with different spectral and polarisation properties that are likely associated with multiple regions of particle acceleration and local enhancements of the magnetic field. Conversely, the magnetic field in the space between filaments has strengths close to that expected in unperturbed regions at the same cluster-centric distance. Comparisons with MHD simulations supports the idea of filaments as multiple acceleration sites. Our observations also confirm the presence of an elongated radio halo, developed in the wake of the bullet-like sub-cluster that merged from the South-East. Finally, we associate the process of magnetic draping to a thin polarised radio source surrounding the remnant of the bullet's cool core.
description: 28 pages, 30 figures, accepted A&A
Beyond Point Masses. III. Detecting Haumea's Nonspherical Gravitational Field
Creators: name: Proudfoot, Benjamin C. N.
name: Ragozzine, Darin A.
name: Giforos, William
name: Grundy, Will M.
name: MacDonald, Mariah
name: Oldroyd, William J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The dwarf planet Haumea is one of the most compelling transneptunian objects (TNOs) to study, hosting two small, dynamically interacting satellites, a family of nearby spectrally unique objects, and a ring system. Haumea itself is extremely oblate due to its 3.9 hour rotation period. Understanding the orbits of Haumea's satellites, named Hi'iaka and Namaka, requires detailed modeling of both satellite-satellite gravitational interactions and satellite interactions with Haumea's nonspherical gravitational field (parameterized here as $J_2$). Understanding both of these effects allows for a detailed probe of the satellites' masses and Haumea's $J_2$ and spin pole. Measuring Haumea's $J_2$ provides information about Haumea's interior, possibly determining the extent of past differentation. In an effort to understand the Haumea system, we have performed detailed non-Keplerian orbit fitting of Haumea's satellites using a decade of new ultra-precise observations. Our fits detect Haumea's $J_2$ and spin pole at $\gtrsim2.5σ$ confidence. Degeneracies present in the dynamics prevent us from precisely measuring Haumea's $J_2$ with the current data, but future observations should enable a precise measurement. Our dynamically determined spin pole shows excellent agreement with past results, illustrating the strength of non-Keplerian orbit fitting. We also explore the spin-orbit dynamics of Haumea and its satellites, showing that axial precession of Hi'iaka may be detectable over decadal timescales. Finally, we present an ephemeris of the Haumea system over the coming decade, enabling high-quality observations of Haumea and its satellites for years to come.
description: Accepted for publication in PSJ
Early Stage Malware Prediction Using Recurrent Neural Networks
Creators: name: Rhode, Matilda
name: Burnap, Pete
name: Jones, Kevin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Static malware analysis is well-suited to endpoint anti-virus systems as it can be conducted quickly by examining the features of an executable piece of code and matching it to previously observed malicious code. However, static code analysis can be vulnerable to code obfuscation techniques. Behavioural data collected during file execution is more difficult to obfuscate, but takes a relatively long time to capture - typically up to 5 minutes, meaning the malicious payload has likely already been delivered by the time it is detected. In this paper we investigate the possibility of predicting whether or not an executable is malicious based on a short snapshot of behavioural data. We find that an ensemble of recurrent neural networks are able to predict whether an executable is malicious or benign within the first 5 seconds of execution with 94% accuracy. This is the first time general types of malicious file have been predicted to be malicious during execution rather than using a complete activity log file post-execution, and enables cyber security endpoint protection to be advanced to use behavioural data for blocking malicious payloads rather than detecting them post-execution and having to repair the damage.
Gravitational lensing by a black hole in effective loop quantum gravity
Creators: name: Fu, Qi-Ming
name: Zhang, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is well known that general relativity is an effective theory of gravity at low energy scale, and actually quantum effects cannot be ignored in the strong-field regime. As a strong gravitational object, black hole plays a key role in testing the quantum effects of gravity in the strong-field regime. In this paper, we focus on black hole in effective loop quantum gravity and investigate what the influences are of the quantum effects on the weak and strong bending angles of light rays. We find that this black hole could be a Schwarzschild black hole, a regular black hole, a one-way traversable wormhole, or a two-way traversable wormhole for the different values of the quantum parameter, and the strong bending angle for this compact object exhibits two different divergent behaviors, i.e., the logarithmic divergence and non-logarithmic divergence. There are a series of relativistic images on both sides of the optical axis. Only the outermost one can be resolved as a single image, and all others are packed together at the limiting angular position. It is interesting to note that the angular separation between the outermost relativistic image and the others initially increases and then decreases as the quantum parameter increases, indicating that there is a maximum in the angular separation. The maximum is reached after the black hole becomes a wormhole, which can be taken as a signal for the formation of the wormhole. Moreover, the limiting angular position decreases as the quantum parameter increases but a little bounce occurs after the formation of the wormhole, and the relative magnification in magnitudes first decreases and then increases as the quantum parameter increases.
description: 14 pages, 6 figures; accepted for publication in Physical Review D
Polarization Modes of Gravitational Waves in Palatini Horndeski theory
Creators: name: Dong, Yu-Qi
name: Liu, Yu-Xiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, the polarization modes of gravitational waves in Horndeski gravity are studied under the Palatini formalism. After obtaining the linearized equation of perturbations in Minkowski background, we find that the polarization modes of gravitational waves depend on the selection of the theoretical parameters. The polarization modes can be divided into quite rich cases by parameters. In all cases of parameter selection, there are $+$ and $\times$ modes propagating at the speed of light but no vector modes. The only difference from general relativity is scalar modes, especially the scalar degrees of freedom can be 0, 1 or 2 in different cases. The appropriate parameter cases can be expected to be selected in the detection of gravitational wave polarization modes by Lisa, Taiji and TianQin in the future.
description: 23 pages, 1 figure, 1 table
Well-posedness and Optimal Regularity of Stochastic Evolution Equations with Multiplicative Noises
Creators: name: Hong, Jialin
name: Liu, Zhihui
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H35, 60H15

description: In this paper, we establish the well-posedness and optimal trajectory regularity for the solution of stochastic evolution equations with generalized Lipschitz-type coefficients driven by general multiplicative noises. To ensure the well-posedness of the problem, the linear operator of the equations is only need to be a generator of a $\CC_0$-semigroup and the proposed noises are quite general, which include space-time white noise and rougher noises. When the linear operator generates an analytic $\CC_0$-semigroup, we derive the optimal trajectory regularity of the solution through a generalized criterion of factorization method.
A critical discussion on the $H_0$ tension
Creators: name: Capozziello, Salvatore
name: Sarracino, Giuseppe
name: De Somma, Giulia
Publisher: name: arXiv
Year: 2024
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: A critical discussion on the $H_0$ Hubble constant tension is presented by considering both early and late-type observations. From recent precise measurements, discrepancies emerge when comparing results for some cosmological quantities obtained at different redshifts. We highlight the most relevant measurements of $H_0$ and propose potential ideas to solve its tension. These solutions concern the exploration of new physics beyond the $Λ$CDM model or the evaluation of $H_0$ by other methods. In particular, we focus on the role of the look-back time.
description: 33 pages, 7 figures
Editorial Introduction to the Thematic Series “Diagnosis of Infectious Diseases by Detection of Microbial Pathogens: A Joint Session Between HemoSpec FrameWork 7 Consortium with COST Action BM1401 Raman4Clinics Working Group 2”
Creators: name: Giamarellos-Bourboulis, Evangelos J.
Publisher: name: Adis Journals
Year: 2018
Subjects: subject: Medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Article full text
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Status and Perspectives of Neutrino Physics
Creators: name: Athar, M. Sajjad
name: Barwick, Steven W.
name: Brunner, Thomas
name: Cao, Jun
name: Danilov, Mikhail
name: Inoue, Kunio
name: Kajita, Takaaki
name: Kowalski, Marek
name: Lindner, Manfred
name: Long, Kenneth R.
name: Palanque-Delabrouille, Nathalie
name: Rodejohann, Werner
name: Schellman, Heidi
name: Scholberg, Kate
name: Seo, Seon-Hee
name: Smith, Nigel J. T.
name: Winter, Walter
name: Zeller, Geralyn P.
name: Funchal, Renata Zukanovich
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: This review demonstrates the unique role of the neutrino by discussing in detail the physics of and with neutrinos. We deal with neutrino sources, neutrino oscillations, absolute masses, interactions, the possible existence of sterile neutrinos, and theoretical implications. In addition, synergies of neutrino physics with other research fields are found, and requirements to continue successful neutrino physics in the future, in terms of technological developments and adequate infrastructures, are stressed.
description: 227 pages; this review of the field of neutrino physics emerged from a report written by a panel on the request of IUPAP (International Union of Pure and Applied Physics). The mandate, the panel members and the report can be found on the web page of the panel at ht tps://www.iupapneutrinopanel.org
Accelerated Tidal Circularization Via Resonance Locking in KIC 8164262
Creators: name: Fuller, Jim
name: Hambleton, Kelly
name: Shporer, Avi
name: Isaacson, Howard
name: Thompson, Susan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Tidal dissipation in binary star and planetary systems is poorly understood. Fortunately, eccentric binaries known as heartbeat stars often exhibit tidally excited oscillations, providing observable diagnostics of tidal circularization mechanisms and timescales. We apply tidal theories to observations of the heartbeat star KIC 8164262, which contains an F-type primary in a very eccentric orbit that exhibits a prominent tidally excited oscillation. We demonstrate that the prominent oscillation is unlikely to result from a chance resonance between tidal forcing and a stellar oscillation mode. However, the oscillation has a frequency and amplitude consistent with the prediction of resonance locking, a mechanism in which coupled stellar and orbital evolution maintain a stable resonance between tidal forcing and a stellar oscillation mode. The resonantly excited mode produces efficient tidal dissipation (corresponding to an effective tidal quality factor $Q \sim 5 \times 10^4$), such that tidal orbital decay/circularization proceeds on a stellar evolution time scale.
description: Published in MNRAS Letters. For an interactive 3D model of the system, go to http://www.glowscript.org/#/user/slantburns/folder/Public/program/KIC8164262
title: ADCO, Quatrième cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Cart. 36 (G 128), 31 folios, f. 0060
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Quatrième cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 36 (G 128), 31 folios, f. 0060, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Quatrième cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 36 (G 128), 31 folios, f. 0060, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
One-loop contributions to the decay $H\rightarrow ν_l\barν_lγ$ in standard model revisited
Creators: name: Tran, Dzung Tri
name: Phan, Khiem Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One-loop contributions to the decay $H\rightarrow ν_l\barν_lγ$ with $l=e, μ, τ$ within standard model framework are revisited in this paper. We derive two representations for the form factors in this calculation. As a result, the computations are not only checked numerically by verifying the ultraviolet finiteness of the results but also confirming the ward identity of the amplitude. We find that the results are good stability with varying ultraviolet cutoff parameters as well as satisfy the ward identity. In phenomenological results, all the physical results are examined with the present input parameters. Especially, we study the partial decay widths for the decay channels in both cases of the detected photon and invisible photon. Differential decay widths are also generated as a function of energy of final photon.
description: Talked at 46th Vietnam Conference on Theoretical Physics (VCTP-46)
A new test of $f(R)$ gravity with the cosmological standard rulers in radio quasars
Creators: name: Xu, Tengpeng
name: Cao, Shuo
name: Qi, Jingzhao
name: Biesiada, Marek
name: Zheng, Xiaogang
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: As an important candidate gravity theory alternative to dark energy, a class of $f(R)$ modified gravity, which introduces a perturbation of the Ricci scalar $R$ in the Einstein-Hilbert action, has been extensively applied to cosmology to explain the acceleration of the universe. In this paper, we focus on the recently-released VLBI observations of the compact structure in intermediate-luminosity quasars combined with the angular-diameter-distance measurements from galaxy clusters, which consists of 145 data points performing as individual cosmological standard rulers in the redshift range $0.023\le z\le 2.80$, to investigate observational constraints on two viable models in $f(R)$ theories within the Palatini formalism: $f_1(R)=R-\frac{a}{R^b}$ and $f_2(R)=R-\frac{aR}{R+ab}$. We also combine the individual standard ruler data with the observations of CMB and BAO, which provides stringent constraints. Furthermore, two model diagnostics, $Om(z)$ and statefinder, are also applied to distinguish the two $f(R)$ models and $Λ$CDM model. Our results show that (1) The quasars sample performs very well to place constraints on the two $f(R)$ cosmologies, which indicates its potential to act as a powerful complementary probe to other cosmological standard rulers. (2) The $Λ$CDM model, which corresponds to $b=0$ in the two $f(R)$ cosmologies is still included within $1σ$ range. However, there still exists some possibility that $Λ$CDM may not the best cosmological model preferred by the current high-redshift observations. (3) The information criteria indicate that the cosmological constant model is still the best one, while the $f_1(R)$ model gets the smallest observational support. (4) The $f_2(R)$ model, which evolves quite different from $f_1(R)$ model at early times, still significantly deviates from both $f_1(R)$ and $Λ$CDM model at the present time.
description: 18 pages, 5 figures, accepted for publication in JCAP
Aspergilolide, a steroid lactone produced by an endophytic fungus Aspergillus sp. MBL1612 isolated from Paeonia ostii
Creators: name: Zhang, Pei-Liang
name: Wang, Gang
name: Xu, Feng-Qing
name: Liu, Jin-Song
name: Wang, Ju-Tao
name: Zhang, Rui
name: Liu, Hai-Tao
name: Hu, Jiang-Miao
name: Wang, Guo-Kai
name: Wu, Pei-Yun
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: A new steroid lactone aspergilolide (1), and nine known compounds helvolic acid (2), verruculogen (3), tryprostatin B (4), 13-oxofumitremorgin B (5), fumitremorgin C (6), demethoxy fumitremorgin C (7), terezine D (8), aszonalenin (9), 12, 13-dihydroxy-fumitremorgin C (10) from cultures of the endophytic fungus Aspergillus sp. MBL1612. Their chemical structures were determined by a series of extensive spectroscopic methods. All of the compounds were isolated from this genus for the first time. The cytotoxicity against five human cancer cell lines of new compound were detected.
Spherically Symmetric, Metrically Static, Isolated Systems in Quasi-Metric Gravity
Creators: name: Østvang, Dag
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The gravitational field exterior respectively interior to a spherically symmetric, isolated body made of perfect fluid is examined within the quasi-metric framework (QMF). It is required that the gravitational field is "metrically static", meaning that it is static except for the effects of the global cosmic expansion on the spatial geometry. Dynamical equations for the gravitational field are set up and an exact solution is found for the exterior part. Besides, equations of motion applying to inertial test particles moving in the exterior gravitational field are set up. By construction, the gravitational field of the system is not static with respect to the cosmic expansion. This means that the radius of the source increases and that distances between circular orbits of inertial test particles increase according to the Hubble law. Moreover, it is shown that if this model of an expanding gravitational field is taken to represent the gravitational field of the Sun (or isolated planetary systems), this has no serious consequences for observational aspects of planetary motion. On the contrary some observational facts of the Earth-Moon system are naturally explained within the QMF. Finally, the QMF predicts different secular increases for two different gravitational coupling parameters. But such secular changes are neither present in the Newtonian limit of the quasi-metric equations of motion nor in the Newtonian limit of the quasi-metric field equations valid inside metrically static sources. Thus standard interpretations of space experiments testing the secular variation of G are explicitly theory-dependent and do not apply to the QMF.
description: 34 pages; v2: connection changed; v3: extended and local conservation laws changed; v4: major revision; v5: accepted for publication in G&C, v6: must have non-universal gravitational coupling; v7: fully coupled theory implemented; v8: fully coupled theory abandoned; v11: inconsistent equation replaced (oh well). arXiv admin note: substantial text overlap with arXiv:gr-qc/0111110
Effects of Cuscuton dynamics on braneworld configurations in the scalar-tensor representation of $f\left(R,T\right)$ gravity
Creators: name: Rosa, João Luís
name: Bazeia, D.
name: Lobão, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we study braneworld configurations in the scalar-tensor representation of the $f\left(R,T\right)$ gravity theory in the presence of a Cuscuton term in the source field matter Lagrangian. We start by deriving the scalar-tensor representation of the theory and obtaining its respective equations of motion. We then introduce the standard metric for a flat braneworld model with one extra dimension for the general case of a $f\left(R,T\right)$ theory and study two different models for the source field. Given the complexity of the field equations, these solutions are obtained numerically. In these cases, the Cuscuton term effectively amplifies the effect, by increasing the height of the stability potential barrier and, consequently, the depth of the minimum of the graviton zero-mode on the brane. Finally, we study the particular cases of $F(R)+T$ and $R+G\left(T\right)$, for which only the scalar fields $φ$ or $ψ$ are present, respectively, and we prove that the presence of the scalar field $φ$ is essential in the development of internal structure on the brane.
description: 13 pages, 13 figures, to appear in EPJC
Integrated cosmological probes: Concordance quantified
Creators: name: Nicola, Andrina
name: Amara, Adam
name: Refregier, Alexandre
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Assessing the consistency of parameter constraints derived from different cosmological probes is an important way to test the validity of the underlying cosmological model. In an earlier work [Nicola et al., 2017], we computed constraints on cosmological parameters for $Λ$CDM from an integrated analysis of CMB temperature anisotropies and CMB lensing from Planck, galaxy clustering and weak lensing from SDSS, weak lensing from DES SV as well as Type Ia supernovae and Hubble parameter measurements. In this work, we extend this analysis and quantify the concordance between the derived constraints and those derived by the Planck Collaboration as well as WMAP9, SPT and ACT. As a measure for consistency, we use the Surprise statistic [Seehars et al., 2014], which is based on the relative entropy. In the framework of a flat $Λ$CDM cosmological model, we find all data sets to be consistent with one another at a level of less than 1$σ$. We highlight that the relative entropy is sensitive to inconsistencies in the models that are used in different parts of the analysis. In particular, inconsistent assumptions for the neutrino mass break its invariance on the parameter choice. When consistent model assumptions are used, the data sets considered in this work all agree with each other and $Λ$CDM, without evidence for tensions.
description: 17 pages, 4 figures, 2 tables, updated following referee's comments, now includes discussion of the Riess et al., 2016 Hubble parameter measurement, matches version accepted by JCAP
BO'LAJAK JURNALISTLARNI KASBIY TAYYORLASH TIZIMIDA JURNALISTIKA PSIXOLOGIYASI
Creators: name: Xidoyatova, Layli
Publisher: name: Zenodo
Year: 2025

description: Maqolada "Jurnalistika psixologiyasi" fanining mazmuni va uslubiy tarkibiy qismlari tahlili keltirilgan. Zamonaviy ijtimoiy-siyosiy vaziyat sharoitida, O‘zbekistonda hukmronlik qilayotgan axborot siyosatini hisobga olgan holda, jurnalist bo'lish jarayonida ushbu fanning dolzarbligi chegaralari ko'rsatilgan. Fanning kognitiv tarkibiy qismlari ko'rib chiqilishi bilan birga ommaviy axborot vositalarining ijtimoiy-psixologik funktsiyalari tahlil etilgan.
Recursion operator for stationary Nizhnik--Veselov--Novikov equation
Creators: name: Marvan, M.
name: Sergyeyev, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present a new general construction of recursion operator from zero curvature representation. Using it, we find a recursion operator for the stationary Nizhnik--Veselov--Novikov equation and present a few low order symmetries generated with the help of this operator.
description: 6 pages, LaTeX 2e
Animal-based organic nutrition induces comparable fruit quality to that of inorganic fertigation in soilless-grown grape tomato
Creators: name: Lozano-Cavazos, Carlos Javier
name: Valdez-Aguilar, Luis Alonso
name: Ibarra-Jiménez, Luis
name: Ascacio-Valdés, Juan Alberto
name: Benavides-Mendoza, Adalberto
name: Aguilar-González, Cristóbal Noé
name: Guajardo-Ríos, Oscar
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Plant Biology
subject: 60506 Virology

description: The aim of the present study was to determine the effect of animal-based organic nutrition and environmental parameters on tomato fruit quality, as well as to establish relations among colour and morphological values performed by the Tomato Analyzer (TA) software application. Organic tomato fruits produced by three organic nutrient solutions, which consisted of different mixtures of several OMRI certified nitrogen fertilizers and one inorganic nutrient solution (Steiner’s solution) as the control, were evaluated for their polyphenol and carotenoid content. We used Tomato Analyzer (TA) to evaluate fruit size and shape. Moreover, we implemented a digital image analysis tool, Color Test (CT), as part of the TA software application to collect and analyse fruit colour parameters. The application of organic fertilizers positively affected the total hydrolysable and condensed polyphenols of tomato fruits compared to the control. The high air temperature (>30°C) and sub-optimal light intensity negatively affected the carotene content of tomato fruits, as well as their morphological and colour attributes. Plants fed with organic solutions containing ASA + ASB + NK2SO4 showed comparable morphology and fruit colour attributes to those of the control plants that received Steiner’s nutrient solution. The results indicated that the application of organic fertilizers positively affected the total hydrolysable and condensed polyphenols of tomato fruits compared to the control. Plants fed with the Steiner’s nutrient solution exhibited the highest carotenoid content in tomato fruits. Organically produced tomatoes through animal-based fertilizer application displayed similar fruit morphology and colour attributes compared to conventionally produced tomatoes.
Lattice results for the longitudinal spin structure and color forces on quarks in a nucleon
Creators: name: Bürger, S.
name: Wurm, T.
name: Löffler, M.
name: Göckeler, M.
name: Bali, G.
name: Collins, S.
name: Schäfer, A.
name: Sternbeck, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using lattice QCD, we calculate the twist-2 contribution $a_2$ to the third Mellin moment of the spin structure functions $g_1$ and $g_2$ in the nucleon. In addition we evaluate the twist-3 contribution $d_2$. Our computations make use of $N_f=2+1$ gauge field ensembles generated by the Coordinated Lattice Simulations (CLS) effort. Neglecting quark-line disconnected contributions we obtain as our best estimates $a_2^{(p)}= 0.069(17)$, $d_2^{(p)}= 0.0105(68)$ and $a_2^{(n)}= 0.0068(88)$, $d_2^{(n)}= -0.0009(70)$ for the proton and the neutron, respectively, where we use the normalizations given in Eqs. (58) and (59). While the $a_2$ results have been converted to the $\overline{\mathrm{MS}}$ scheme using three-loop perturbation theory, the numbers for $d_2$ are given in the regularization independent momentum subtraction (RI$^\prime$-MOM) scheme, i.e., the conversion has been performed only in tree-level perturbation theory. The $d_2$ results can be interpreted as corresponding to a transverse color Lorentz force on a quark in a transversely polarized proton of size $F^{(u)} = 116(61)$ MeV/fm and $F^{(d)} = -38(66)$ MeV/fm for $u$ and $d$ quarks, respectively. The error estimates quoted include statistical and systematic uncertainties added in quadrature.
description: 17 pages, 8 figures; v2: 1 figure, 1 reference and a few clarifications added, analysis corrected, results slightly changed
Analysis of GRACE range-rate residuals with focus on KBR instrument system noise
Creators: name: Goswami, Sujata
name: Devaraju, Balaji
name: Weigelt, Matthias
name: Mayer-Gürr, Torsten
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the post-fit range-rate residuals after the gravity field parameter estimation from the inter-satellite ranging data of the gravity recovery and climate experiment (GRACE) satellite mission. Of particular interest is the high-frequency spectrum (f gt 20 MHz) which is dominated by the microwave ranging system noise. Such analysis is carried out to understand the yet unsolved discrepancy between the predicted baseline errors and the observed ones. The analysis consists of two parts. First, we present the effects in the signal-to-noise ratio (SNRs) of the k-band ranging system. The SNRs are also affected by the moon intrusions into the star cameras field of view and magnetic torque rod currents in addition to the effects presented by Harvey et al. [2016]. Second, we analyze the range-rate residuals to study the effects of the KBR system noise. The range-rate residuals are dominated by the non-stationary errors in the high-frequency observations. These high-frequency errors in the range-rate residuals are found to be dependent on the temperature and effects of sun intrusion into the star cameras field of view reflected in the SNRs of the K-band phase observations.
Методологические основы устойчивого развития логистических цепей грузопотоков: диссертация на соискание ученой степени доктора технических наук. Российский университет транспорта (МИИТ). Москва, 2023. 360 c.
Creators: name: Osintsev, Nikita
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 350999
subject: Transportation, logistics and supply chains not elsewhere classified
classificationCode: 401102
subject: Environmentally sustainable engineering
classificationCode: 350909
subject: Supply chains

description: Целью диссертационной работы является разработка методологических основ устойчивого развития логистических цепей грузопотоков с использованием принципов и инструментов «зелёной» логистики для эффективного продвижения грузопотоков при одновременном снижении негативного воздействия на окружающую среду. Объектом исследования являются логистические цепи грузопотоков. Научная новизна диссертационной работы состоит в разработанной методологии устойчивого развития логистических цепей грузопотоков на основе использования принципов и инструментов «зелёной» логистики. Теоретическая значимость заключается в разработке методологических основ устойчивого развития логистических цепей грузопотоков, включающих в себя принципы и инструменты «зелёной» логистики, комплекс методов и моделей принятия решений на различных уровнях управления логистическими системами, обеспечивающих достижение целей устойчивого развития. Положения, выносимые на защиту: 1. Теоретико-методологические основы устойчивого развития логистических цепей грузопотоков на основе использования принципов, методов и инструментов «зелёной» логистики. 2. Синтезированная система принципов «зелёной» логистики как основа достижения экономических, социальных и экологических целей логистических цепей грузопотоков. 3. Система методов и инструментов «зелёной» логистики как элемент управления логистическими цепями грузопотоков для достижения экономических, социальных и экологических целей. 4. Двухуровневая иерархическая система параметров и показателей логистических потоков для оценки соответствия цепей грузопотоков целям устойчивого развития. 5. Методика определения веса параметров и показателей логистических потоков, основанная на использовании теорий нечётких множеств и серых систем. 6. Методы и методики управления логистическими цепями грузопотоков как комплекс математических и комбинированных многокритериальных моделей принятия решений по оптимизации параметров логистических потоков с использованием инструментов «зелёной» логистики. 7. Методологические основы формирования системы управления логистическими цепями грузопотоков на основе реализации принципов, методов и инструментов «зелёной» логистики в совокупности с многокритериальными моделями принятия решений.
The Type II AGN-host galaxy connection: insights from the VVDS and VIPERS surveys
Creators: name: Vietri, G.
name: Garilli, B.
name: Polletta, M.
name: Bisogni, S.
name: Cassarà, L. P.
name: Franzetti, P.
name: Fumana, M.
name: Gargiulo, A.
name: Maccagni, D.
name: Mancini, C.
name: Scodeggio, M.
name: Fritz, A.
name: Malek, K.
name: Manzoni, G.
name: Pollo, A.
name: Siudek, M.
name: Vergani, D.
name: Zamorani, G.
name: Zanichelli, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of optically-selected Type II AGN at 0.5 < z < 0.9 from the VIPERS and VVDS surveys, to investigate the connection between AGN activity and physical properties of their host galaxies. The host stellar mass is estimated through spectral energy distribution fitting with the CIGALE code, and star formation rates are derived from the [OII]$λ$3727 $Å$ line luminosity. We find that 49% of the AGN host galaxies are on or above the main sequence (MS), 40% lie in the sub-MS locus, and 11% in the quiescent locus. Using the [OIII]$λ$5007 $Å$ line luminosity as a proxy of the AGN power, we find that at fixed AGN power Type II AGN host galaxies show a bimodal behaviour: systems with host galaxy stellar mass <10$^{10}$ M$_{\odot}$, reside along the MS or in the starbursts locus (high-SF Type II AGN), while systems residing in massive host-galaxies (>10$^{10}$ M$_{\odot}$) show a lower level of star formation (low-SF Type II AGN). At all stellar masses, the offset from the MS is positively correlated with the AGN power. We interpret this correlation as evidence of co-evolution between the AGN and the host, possibly due to the availability of cold gas. In the most powerful AGN with host galaxies below the MS we find a hint, though weak, of asymmetry in the [OIII] line profile, likely due to outflowing gas, consistent with a scenario in which AGN feedback removes the available gas and halts the star formation in the most massive hosts.
description: Accepted for publication in A&A
Reducibility of zero curvature representations with application to recursion operators
Creators: name: Marvan, Michal
Publisher: name: arXiv
Year: 2003
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present a criterion of reducibility of a zero curvature representation to a solvable subalgebra, hence to a chain of conservation laws. Namely, we show that reducibility is equivalent to the existence of a section of the generalized Riccati covering. Results are applied to conversion between Guthrie's and Olver's form of recursion operators.
description: 26 pages, uses nath.sty
Light-by-light scattering in Double-Logarithmic Approximation
Creators: name: Ermolaev, B. I.
name: Troyan, S. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the present paper we consider the elastic 2 -> 2 -scattering of virtual photons at high energies in the forward kinematics at zero and non-zero values of t. Accounting for both gluon and quark double-logarithmic (DL) contributions to all orders in the QCD coupling, we obtain explicit expressions for amplitudes of this process in Double-Logarithmic Approximation (DLA). First we keep the QCD coupling fixed and then account for running coupling effects. Applying the saddle-point method to the obtained expressions for the scattering amplitude, we calculate the high-energy asymptotics of the amplitude, which proved to be of the Regge form. The Reggeon bears the vacuum quantum numbers and therefore it is a new, DL contribution to Pomeron. Comparison of the DL Pomeron to the BFKL Pomeron shows that contribution of the DL Pomeron to the high-energy asymptotics is of the same order as contribution of the BFKL Pomeron, so the DL Pomeron should be taken into account together with the BFKL Pomeron. We estimate the applicability region for the asymptotics of the light-by-light scattering amplitude, where the the DL Pomeron can reliably represent the parent amplitude.
description: 16 pages, 4 figures. Multiple errors are corrected, 2 figs are added, comparizon to BFKL is done in more detail
Nonequilibrium effects of reactive flow based on gas kinetic theory
Creators: name: Su, Xianli
name: Lin, Chuandong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: How to accurately probe chemically reactive flows with essential thermodynamic nonequilibrium effects is an open issue. Via the Chapman-Enskog analysis, the local nonequilibrium particle velocity distribution function is derived from the gas kinetic theory. It is demonstrated theoretically and numerically that the distribution function depends on the physical quantities and derivatives, and is independent of the chemical reactions directly. Based on the simulation results of the discrete Boltzmann model, the departure between equilibrium and nonequilibrium distribution functions is obtained and analyzed around the detonation wave. Besides, it has been verified for the first time that the kinetic moments calculated by summations of the discrete distribution functions are close to those calculated by integrals of their original forms.
Lettre de Jules François Paul de Fauris de Saint-Vincent à Jean-François Séguier, 1783-12-18
Creators: name: Fauris de Saint-Vincent, Jules François Paul de
name: De Fauris De Saint-Vincent, Jules François Paul
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Antiquités (général)
Numismatique
Santé

description: [transcription] A Aix ce 18 décembre 1783

Permettez-moi , Monsieur, de vous demander des nouvelles de votre santé, vous devez connaître l'intérêt bien tendre que je prends. Il est inutile de vous dire que je fais les voeux les plus empressés pour vous. J'ai voulu vous les faire parvenir avant que vous receviez ceux de la foire. Mes sentiments pour vous m'évitent certainement que vous daignez les distinguer.

J'ai reçu depuis peu du Levant une médaille de bronze d'Othon assez bien conservée, elle tient le milieu entre le moyen et le petit bronze. Elle a tous les caractères des médailles égyptienne. Le côté de la tête a la légende ordinaire. On voit au revers Hercule portant sur le bras gauche la dépouille du lion de Némée. Il manque à la légende quelques lettres que je ne scai pas suppléer. Voici celles qu'on voit très distinctement ΟΠΟΥ/ΟC ... ΚΛA CΕPΑΠ/ IΩM.

Je crois qu'elle n'a jamais été publiée. Je n'ai même rien trouver dans les livres que j'ai consulter qui y eut du rapport. J'ose vous attester son antiquité elle me paraît hors de tout soupçon. J'ose vous demander de me donner quelque éclaircissement sur cette médaille. Je n'ai jamais eu recours à vos lumières que je n'aiereçu de vous les réponses les plus satisfaisantes. Il ne me reste que de vous faire me excuses de la liberté que je prends de vous importuner en toute occasion, et de vous assurer des sentiments sincères et respectueux avec lesquels j'ai l'honneur d'être Monsieur

Votre très humble et très obéissant serviteur

Saint Vincens
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 149_4, fol. 183
Differential invariants of generic hyperbolic Monge--Ampère equations
Creators: name: Marvan, Michal
name: Vinogradov, Alexandre M.
name: Yumaguzhin, Valery A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper basic differential invariants of generic hyperbolic Monge--Ampère equations with respect to contact transformations are constructed and the equivalence problem for these equations is solved.
description: 25 pages