cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SeqMIA: Sequential-Metric Based Membership Inference Attack
Creators: name: Li, Hao
name: Li, Zheng
name: Wu, Siyuan
name: Hu, Chengrui
name: Ye, Yutong
name: Zhang, Min
name: Feng, Dengguo
name: Zhang, Yang
Publisher: name: CISPA
Year: 2024

description: Most existing membership inference attacks (MIAs) utilize metrics (e.g., loss) calculated on the model's final state, while recent advanced attacks leverage metrics computed at various stages, including both intermediate and final stages, throughout the model training. Nevertheless, these attacks often process multiple intermediate states of the metric independently, ignoring their time-dependent patterns. Consequently, they struggle to effectively distinguish between members and non-members who exhibit similar metric values, particularly resulting in a high false-positive rate.
In this study, we delve deeper into the new membership signals in the black-box scenario. We identify a new, more integrated membership signal: the Pattern of Metric Sequence, derived from the various stages of model training. We contend that current signals provide only partial perspectives of this new signal: the new one encompasses both the model's multiple intermediate and final states, with a greater emphasis on temporal patterns among them. Building upon this signal, we introduce a novel attack method called Sequential-metric based Membership Inference Attack (SeqMIA). Specifically, we utilize knowledge distillation to obtain a set of distilled models representing various stages of the target model's training. We then assess multiple metrics on these distilled models in chronological order, creating distilled metric sequence. We finally integrate distilled multi-metric sequences as a sequential multiformat and employ an attention-based RNN attack model for inference. Empirical results show SeqMIA outperforms all baselines, especially can achieve an order of magnitude improvement in terms of TPR @ 0.1% FPR. Furthermore, we delve into the reasons why this signal contributes to SeqMIA's high attack performance, and assess various defense mechanisms against SeqMIA.
TkSel
Creators: name: Hernandez, Marceau
Publisher: name: Marceau Hernandez
Year: 2025

description: tksel is a Python package that provides tool to recover videos from TikTok. It is intended to be used on the csvs generated by Minet but will work on any csv with the right columns:

video_id, the id of the video (alias id)

author_id, the id of the author (alias author_unique_id)
High [OIII]/[CII] surface brightness ratios trace early starburst galaxies
Creators: name: Vallini, L.
name: Ferrara, A.
name: Pallottini, A.
name: Carniani, S.
name: Gallerani, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the impact of deviations from the Kennicutt-Schmidt relation (quantified by the `burstiness' parameter $κ_s$), gas metallicity ($Z$), and density ($n$) on the observed [OIII]88$μ$m/[CII]158$μ$m surface brightness ratios ($Σ_{[OIII]}/Σ_{[CII]}$) in nine galaxies at $z\approx6-9$. We first discuss possible biases in the measured $Σ_{[OIII]}/Σ_{[CII]}$ ratios by comparing the data with zoom-in cosmological simulations, and then use a Markov Chain Monte Carlo algorithm to derive the best fit values of ($κ_s, Z, n$). We find that (i) the strongest dependence of $Σ_{[OIII]}/Σ_{[CII]}$ is on $κ_s$; (ii) high ratios identify starburst galaxies with short gas depletion times ($t_{dep}=6-49\,\rm Myr$); (iii) a secondary dependence on density is found, with $Σ_{[OIII]}/Σ_{[CII]}$ anticorrelating with $n$ as a result of the lower [OIII] critical density, (iv) the ratio only weakly depends on $Z$. The nine galaxies are significantly enriched (Z=0.2-0.5 $Z_\odot$), and dense ($n=10^{1-3} {\rm cm}^{-3}$). This lends further support to the starburst scenario in which a rapid enrichment of the interstellar medium is expected.
description: accepted for publication in MNRAS, 12 pages, 8 figures
Interstellar Krypton Abundances: The Detection of Kiloparsec-scale Differences in Galactic Nucleosynthetic History
Creators: name: Cartledge, Stefan I. B.
name: Lauroesch, J. T.
name: Meyer, David M.
name: Sofia, U. J.
name: Clayton, Geoffrey C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of Kr I 1236 line measurements from 50 sight lines in the Hubble Space Telescope Space Telescope Imaging Spectrograph and Goddard High Resolution Spectrograph data archives that have sufficiently high resolution and signal-to-noise ratio to permit reliable krypton-to-hydrogen abundance ratio determinations. The distribution of Kr/H ratios in this sample is consistent with a single value for the ISM within 5900 pc of the Sun, log(Kr/H) = -9.02+/-0.02, apart from a rough annulus from between about 600 and 2500 pc distant. The Kr/H ratio toward stars within this annulus is elevated by approximately 0.11 dex, similar to previously noted elevations of O/H and Cu/H gas-phase abundances beyond about 800 pc. A significant drop in the gas-phase N/O ratio in the same region suggests that this is an artifact of nucleosynthetic history. Since the physical scale of the annulus' inner edge is comparable to the radius of the Gould Belt and the outer limit of heliocentric distances where the D/H abundance ratio is highly variable, these phenomena may be related to the Gould Belt's origins.
description: 32 pages, including 6 figures; accepted by ApJ
The period and amplitude changes of Polaris (alpha UMi) from 2003 to 2007 measured with SMEI
Creators: name: Spreckley, S. A.
name: Stevens, I. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of 4.5 years of high precision (0.1%) space-based photometric measurements of the Cepheid variable Polaris, obtained by the broad band Solar Mass Ejection Imager (SMEI) instrument on board the Coriolis satellite. The data span from April 2003 to October 2007, with a cadence of 101 minutes and a fill factor of 70%. We have measured the mean peak to peak amplitude across the whole set of observations to be 25 mmag. There is, however, a clear trend that the size of the oscillations has been increasing during the observations, with peak to peak variations less than 22 mmag in early 2003, increasing to around 28 mmag by October 2007, suggesting that the peak to peak amplitude is increasing at a rate of 1.39 \pm 0.12 mmag yr^{-1}. Additionally, we have combined our new measurements with archival measurements to measure a rate of period change of 4.90 \pm 0.26 s yr^{-1} over the last 50 years. However, there is some suggestion that the period of Polaris has undergone a recent decline, and combined with the increased amplitude, this could imply evolution away from an overtone pulsation mode into the fundamental or a double pulsation mode depending on the precise mass of Polaris.
description: 6 pages, 7 figures, 2 tables, accepted in MNRAS
Dynamical model of the Milky Way using APOGEE and Gaia data
Creators: name: Nitschai, Maria Selina
name: Eilers, Anna-Christina
name: Neumayer, Nadine
name: Cappellari, Michele
name: Rix, Hans-Walter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We construct a dynamical model of the Milky Way disk from a data set, which combines Gaia EDR3 and APOGEE data throughout Galactocentric radii between $5.0\leq R\leq19.5$ kpc. We make use of the spherically-aligned Jeans Anisotropic Method to model the stellar velocities and their velocity dispersions. Building upon our previous work, our model now is fitted to kinematic maps that have been extended to larger Galactocentric radii due to the expansion of our data set, probing the outer regions of the Galactic disk. Our best-fitting dynamical model suggests a logarithmic density slope of $α_{\rm DM}=-1.602\pm0.079_{\rm syst}$ for the dark matter halo and a dark matter density of $ρ_{\rm DM}(R_{\odot})=(8.92\pm0.56_{\rm syst})\times 10^{-3}$ M$_{\odot}$ pc$^{-3}$ ($0.339\pm0.022_{\rm syst}$ GeV cm$^{3}$). We estimate a circular velocity at the solar radius of $v_{\rm circ}=(234.7\pm1.7_{\rm syst})$ km s$^{-1}$ with a decline towards larger radii. The total mass density is $ρ_{\rm tot}(R_{\odot})$=$(0.0672\pm0.0015_{\rm syst})$ M$_{\odot}$ pc$^{-3}$ with a slope of $α_{\rm tot}$=$-2.367\pm0.047_{\rm syst}$ for $5\leq R\leq19.5$ kpc and the total surface density is $Σ(R{_\odot}, |z|\leq$ 1.1 kpc)=$(55.5\pm1.7_{\rm syst})$ M$_{\odot}$ pc$^{-2}$. While the statistical errors are small, the error budget of the derived quantities is dominated by the 3 to 7 times larger systematic uncertainties. These values are consistent with our previous determination, but systematic uncertainties are reduced due to the extended data set covering a larger spatial extent of the Milky Way disk. Furthermore, we test the influence of non-axisymmetric features on our resulting model and analyze how a flaring disk model would change our findings.
description: 19 pages, 11 figures, accepted for publication in ApJ
СРАВНИТЕЛЬНЫЙ АНАЛИЗ МЕТОДОВ ИНТЕНСИФИКАЦИИ ДОБЫЧИ НЕФТИ В ВЫСОКОПРОНИЦАЕМЫХ ТЕРРИГЕННЫХ КОЛЛЕКТОРАХ ЙЕМЕНА: ГИДРАВЛИЧЕСКИЙ РАЗРЫВ ПЛАСТА, ХИМИЧЕСКИЕ РЕАГЕНТЫ И ТЕРМАЛЬНЫЕ МЕТОДЫ
Creators: name: Аль-Беадуни Абдулкадер Омар
name: Шараф Алдин Моад Али Али Абдулла
name: Саид Али джамил Мохаммед
name: Касем Гассан Касем Али Мохаммед
Publisher: name: Zenodo
Year: 2025
Subjects: Ключевые слова. Интенсификация добычи нефти, высокопроницаемые терригенные коллекторы, гидравлический разрыв пласта, химические реагенты, термальные методы, Йемен, Масила, Сабатейн, Тавила, нефтеотдача.

description: Аннотация. Цель данной работы состоит в комплексном рассмотрении трёх основных способов повышения нефтеотдачи в высокопроницаемых терригенных коллекторах Йемена: гидравлического разрыва пласта, химического воздействия и термальных методов. В тексте излагаются факторы, влияющие на эффективность каждого подхода, приводятся сведения о реализации данных технологий на конкретных месторождениях (Масила, Сабатейн, Тавила и другие), а также обсуждаются экологические, экономические и технические вопросы, возникающие при проведении соответствующих операций. Особое внимание уделяется минеральному составу пород, свойствам нефти и особенностям геологического строения, которые в совокупности определяют целесообразность применения того или иного метода. Приведён сравнительный анализ роста дебита, риска обводнения и влияния на пласт при выборе конкретной технологии. Предлагаются рекомендации по комплексному использованию описанных методов с учётом структуры коллектора, а также коротко рассматриваются перспективы дальнейших исследований, направленных на оптимизацию разработки нефтяных месторождений Йемена. Материал может представлять интерес для исследователей, занятых повышением эффективности нефтедобычи в регионах с высокой проницаемостью терригенных песчаников и сложной геологической обстановкой.
Pseudoscalar U(1) spin liquids in $α$-RuCl$_3$
Creators: name: Villadiego, Inti Sodemann
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A recent experiment has reported oscillations of the thermal conductivity of $α$-RuCl$_3$ driven by an in-plane magnetic field that are reminiscent of the quantum oscillations in metals. At first glance, these observations are consistent with the presence of the long-sought-after spinon Fermi surface state. Strikingly, however, the experiment also reported vanishing thermal Hall conductivity coexisting with the oscillations of the longitudinal one. Such absence of the thermal Hall effect must originate from crystalline symmetries of $α$-RuCl$_3$. But if the system was a traditional spinon fermi surface state, these symmetries would also necessarily prohibit the emergence of a magnetic field acting on the spinons, in stark contradiction with the presence of quantum oscillations in experiments. To reconcile these observations, we introduce a new class of symmetry enriched ``pseudoscalar" U(1) spin liquids in which certain crystalline symmetries act as a particle-hole conjugation on the spinons. The associated pseudoscalar spinon Fermi surface states allow for the coexistence of an emergent Landau quantizing magnetic field while having an exactly zero thermal Hall conductivity. We develop a general theory of these states by constructing Gutzwiller-projected wave-functions and describing how they naturally appear as U(1) spin liquids with a distinctive projective symmetry group implementation of crystalline symmetries in the fermionic parton representation of spins. We propose that the field induced quantum disordered state in $α$-RuCl$_3$ descends from a pseudoscalar spinon fermi surface state that features compensated spinon-particle and spinon-hole pockets possibly located around the $M$ points of its honeycomb Brillouin zone. These points are connected via a wave-vector associated with the emergence of the competing zig-zag antiferromagnetic state.
description: 14 pages, 3 figures. Section II describes general ideas. It can be read independently from the rest of the paper and does not rely on details of $\alpha$-RuCl$_3$
Thermodynamics of Bardeen regular black hole with generalized uncertainty principle
Creators: name: Merriam, Areeba
name: Sarwar, M. Zain
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This study explores the emission of massive charged spin-1 particles from the background of Bardeen regular spacetime by the semi-classical method used to study the Hawking radiation spectrum. We employed the Hamilton-Jacobi method and WKB approximation technique with the suitable form of the wave function to solve the Proca field equation. We calculated the tunneling probability of outgoing spin-1 particles and the corresponding thermodynamic temperature. Furthermore, we obtained the modified thermodynamic quantities like temperature, entropy as well as heat capacity by utilizing the quadratic form of generalized uncertainty principle (GUP) and minimal length. In the end, we investigated the local stability as well as phase transitions of the Bardeen black hole in the context of GUP-modified heat capacity.
description: 13 pages, 4 figures
The effect of Social Power Motives on Collective Action for Women's Rights
Creators: name: Maria Kyriakou
name: Adam Moore
Publisher: name: Zenodo
Year: 2022

description: We evaluated the effects of three social power motives- desire for dominance, prestige and leadership (DoPL)- on protective and feminist collective action for gender equality with the aim to uncover how leading and power-motivated figures behave in regards to gender equality. Feminist action is linked to real progress, whereas protective action maintains the current structure of the social hierarchy. Participants rated their agreement with numerous statements regarding their willingness to engage in collective action, as well as their level of desire for the three power motives in an online survey. Various relevant attitudes, such as benevolent and hostile sexism, sex, feminist identity and social dominance orientation were controlled for in the survey. Multilevel multivariate multiple regression modelling under a Bayesian framework indicated that desire for leadership and prestige trigger a willingness to engage in feminist action, while individuals who desire dominance oppose said action. In addition, we failed to present evidence that any of the three motives predicts protective action. Findings suggest that the motive of dominance obstructs gender equality from progressing, while leadership- and prestige-oriented individuals support movements that confront the current social hierarchy. Future studies are encouraged to replicate our findings in the field.
Self-organized periodicity of protein clusters in growing bacteria
Creators: name: Wang, Hui
name: Wingreen, Ned S.
name: Mukhopadhyay, Ranjan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Cell Behavior (q-bio.CB)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Chemotaxis receptors in E. coli form clusters at the cell poles and also laterally along the cell body, and this clustering plays an important role in signal transduction. Recently, experiments using flourrescence imaging have shown that, during cell growth, lateral clusters form at positions approximately periodically spaced along the cell body. In this paper, we demonstrate within a lattice model that such spatial organization could arise spontaneously from a stochastic nucleation mechanism. The same mechanism may explain the recent observation of periodic aggregates of misfolded proteins in E. coli.
description: 5 pages, 4 figures
A semi-analytic method to compute Feynman integrals applied to four-loop corrections to the $\overline{\rm MS}$-pole quark mass relation
Creators: name: Fael, Matteo
name: Lange, Fabian
name: Schönwald, Kay
name: Steinhauser, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a method to numerically compute multi-loop integrals, depending on one dimensionless parameter $x$ and the dimension $d$, in the whole kinematic range of $x$. The method is based on differential equations, which, however, do not require any special form, and series expansions around singular and regular points. This method provides results well suited for fast numerical evaluation and sufficiently precise for phenomenological applications. We apply the approach to four-loop on-shell integrals and compute the coefficient function of eight colour structures in the relation between the mass of a heavy quark defined in the $\overline{\rm MS}$ and the on-shell scheme allowing for a second non-zero quark mass. We also obtain analytic results for these eight coefficient functions in terms of harmonic polylogarithms and iterated integrals. This allows for a validation of the numerical accuracy.
description: 17 pages
VERITAS Discovery of >200GeV Gamma-ray Emission from the Intermediate-frequency-peaked BL Lac Object W Comae
Creators: name: VERITAS Collaboration
name: Acciari, V. A.
name: Aliu, E.
name: Beilicke, M.
name: Benbow, W.
name: Boettcher, M.
name: Bradbury, S. M.
name: Buckley, J. H.
name: Bugaev, V.
name: Butt, Y.
name: Celik, O.
name: Cesarini, A.
name: Ciupik, L.
name: Chow, Y. C. K.
name: Cogan, P.
name: Colin, P.
name: Cui, W.
name: Daniel, M. K.
name: Ergin, T.
name: Falcone, A. D.
name: Fegan, S. J.
name: Finley, J. P.
name: Finnegan, G.
name: Fortin, P.
name: Fortson, L. F.
name: Furniss, A.
name: Gall, D.
name: Gillanders, G. H.
name: Grube, J.
name: Guenette, R.
name: Gyuk, G.
name: Hanna, D.
name: Hays, E.
name: Holder, J.
name: Horan, D.
name: Hui, C. M.
name: Humensky, T. B.
name: Imran, A.
name: Kaaret, P.
name: Karlsson, N.
name: Kertzman, M.
name: Kieda, D. B.
name: Konopelko, A.
name: Krawczynski, H.
name: Krennrich, F.
name: Lang, M. J.
name: LeBohec, S.
name: Lee, K.
name: Maier, G.
name: McCann, A.
name: McCutcheon, M.
name: Moriarty, P.
name: Mukherjee, R.
name: Nagai, T.
name: Niemiec, J.
name: Ong, R. A.
name: Pandel, D.
name: Perkins, J. S.
name: Petry, D.
name: Pohl, M.
name: Quinn, J.
name: Ragan, K.
name: Reyes, L. C.
name: Reynolds, P. T.
name: Roache, E.
name: Rose, H. J.
name: Schroedter, M.
name: Sembroski, G. H.
name: Smith, A. W.
name: Steele, D.
name: Swordy, S. P.
name: Toner, J. A.
name: Vassiliev, V. V.
name: Wagner, R.
name: Wakely, S. P.
name: Ward, J. E.
name: Weekes, T. C.
name: Weinstein, A.
name: White, R. J.
name: Williams, D. A.
name: Wissel, S. A.
name: Wood, M.
name: Zitzer, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of very high-energy gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae (z=0.102) by VERITAS. The source was observed between January and April 2008. A strong outburst of gamma-ray emission was measured in the middle of March, lasting for only four days. The energy spectrum measured during the two highest flare nights is fit by a power-law and is found to be very steep, with a differential photon spectral index of Gamma = 3.81 +- 0.35_stat +- 0.34_syst. The integral photon flux above 200GeV during those two nights corresponds to roughly 9% of the flux from the Crab Nebula. Quasi-simultaneous Swift observations at X-ray energies were triggered by the VERITAS observations. The spectral energy distribution of the flare data can be described by synchrotron-self-Compton (SSC) or external-Compton (EC) leptonic jet models, with the latter offering a more natural set of parameters to fit the data.
description: 7 pages, 4 figures, accepted by ApJL
Inverse Seesaw, dark matter and the Hubble tension
Creators: name: Fernandez-Martinez, Enrique
name: Pierre, Mathias
name: Pinsard, Emanuelle
name: Rosauro-Alcaraz, Salvador
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the inverse Seesaw scenario for neutrino masses with the approximate Lepton number symmetry broken dynamically by a scalar with Lepton number two. We show that the Majoron associated to the spontaneous symmetry breaking can alleviate the Hubble tension through its contribution to $ΔN_\text{eff}$ and late decays to neutrinos. Among the additional fermionic states required for realizing the inverse Seesaw mechanism, sterile neutrinos at the keV-MeV scale can account for all the dark matter component of the Universe if produced via freeze-in from the decays of heavier degrees of freedom.
description: 22 pages, 2 figures
Giant Chern number of a Weyl nodal surface without upper limit
Creators: name: Ma, Junzhang
name: Zhang, S. -N.
name: Song, J. P.
name: Wu, Q. -S.
name: Ekahana, S. A.
name: Naamneh, M.
name: Radovic, M.
name: Strocov, V. N.
name: Gao, S. -Y.
name: Qian, T.
name: Ding, H.
name: He, K.
name: Manna, K.
name: Felser, C.
name: Plumb, N. C.
name: Yazyev, O. V.
name: Xiong, Y. -M.
name: Shi, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Weyl nodes can be classified into zero-dimensional (0D) Weyl points (WPs), 1D Weyl nodal lines (WNL) and 2D Weyl nodal surfaces (WNS), which possess finite Chern numbers. Up to date, the largest Chern number of WPs identified in Weyl semimetals is 4, which is thought to be a maximal value for linearly crossing points in solids. On the other hand, whether the Chern numbers of nonzero-dimensional linear crossing Weyl nodal objects have one upper limit is still an open question. In this work, combining angle-resolved photoemission spectroscopy with density functional theory calculations, we show that the chiral crystal AlPt hosts a cube-shaped charged Weyl nodal surface which is formed by the linear crossings of two singly-degenerate bands. Different to conventional Weyl nodes, the cube-shaped nodal surface in AlPt is enforced by nonsymmorphic chiral symmetries and time reversal symmetry rather than accidental band crossings, and it possesses a giant Chern number |C| = 26. Moreover, our results and analysis prove that there is no upper limit for the Chern numbers of such kind 2D Weyl nodal object.
description: 22 pages, 3 figures
Deformation measurement by single spherical near-field intensity measurement for large reflector antenna
Creators: name: Ye, Qian
name: Wang, Boyang
name: Yao, Qiang
name: Wang, Jinqing
name: Liu, Qinghui
name: Shen, Zhiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This paper presents a new method to obtain the deformation distribution on the main reflector of an antenna only by measuring the electric intensity on a spherical surface with the focal point as the center of the sphere, regardless of phase. Combining the differential geometry theory with geometric optics method, this paper has derived a deformation-intensity equation to relate the surface deformation to the intensity distribution of a spherical near-field directly. Based on the Finite difference method (FDM) and Gauss-Seidel iteration, deformation has been calculated from intensity simulated by GO and PO method, respectively, with relatively small errors, which prove the effectiveness of the equation proposed in this paper. By means of this method , it is possible to measure the deformation only by scanning the electric intensity of a single hemispherical near-field whose area is only about $1/15$ of the aperture. And the measurement only needs a plane wave at any frequency as the incident wave, which means that both the signals from the outer space satellite and the far-field artificial beacon could be used as the sources. The scanning can be realized no matter what attitude and elevation angle the antenna is in because the size and angle of the hemisphere are changeable.
The Stellar Populations of Starburst Galaxies Through near infrared spectroscopy
Creators: name: Riffel, R.
name: Pastoriza, M. G.
name: Rodriguez-Ardila, A.
name: Maraston, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the central (inner few hundred parsecs) stellar populations of four starburst galaxies (NGC34, NGC1614, NGC3310 and NGC7714) in the near-infrared (NIR), from 0.8 to 2.4microns, by fitting combinations of stellar population models of various ages and metallicities. The NIR spectra of these galaxies feature many absorption lines. For the first time, we fit simultaneously as much as 15 absorption features in the NIR. The observed spectra are best explained by stellar populations containing a sizable amount (20 to 56 % by mass) of ~1Gyr old stellar population with Thermally Pulsing-Asymptotic Giant Branch stars. We found that the metallicity of the stars which dominates the light is solar. Metallicities substantially different from solar give a worse fit. Though the ages and metallicities we estimate using the NIR spectroscopy are in agreement with values from the literature based on the UV/optical, we find older ages and a larger age spread. This may be due to the fact that the optical is mostly sensitive to the last episode of star formation, while the NIR better maintains the record of previous stellar generations. Another interesting result is that the reddening estimated from the whole NIR spectrum is considerably lower than that based on emission lines. Finally, we find a good agreement of the free emission line spectrum with photoionization models, using as input spectral energy distribution the synthetic composite template we derived as best-fit.
description: 11 pages, 7 figures, accepted for publication on MNRAS
Generation mean analysis in azuki bean using matrix algebra method
Creators: name: Weerapun Kunkaew
name: Suthat Julsrigival
name: Chuckree Senthong
name: Dumnern Karladee
Publisher: name: Genetics Society of Thailand
Year: 2008
Subjects: Azuki bean, generation mean analysis, matrix algebra

description: 2, 1, Thai Journal of Genetics
การศึกษาปฏิสัมพันธ์ของโปรตีน Prefoldin กับโปรตีนคัลมอดุลินและโปรตีนคล้ายคัลมอดุลินจากข้าว (Oryza sativa L.) (Interaction  Studies of a Prefoldin with Calmodulin and CML  Proteins from  Rice
(Oryza sativa L.))
Creators: name: จุฑามาศ อนันทยานนท์
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: calcium sensor protein, calmodulin, rice, yeast two-hybrid system

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
การตรวจหาซีโรไทป์ของเชื้อไวรัสเดงกี่จากยุงลายบ้าน (Detection and Serotyping of Dengue Virus in Aedes aegypti)
Creators: name: ฑิฆัมพร สิทธิวิชาภิญโญ
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: dengue virus, Aedes aegypti, serotype, PCR

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
Procedural Text Understanding via Scene-Wise Evolution
Creators: name: Tang, Jialong
name: Lin, Hongyu
name: Liao, Meng
name: Lu, Yaojie
name: Han, Xianpei
name: Sun, Le
name: Xie, Weijian
name: Xu, Jin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Procedural text understanding requires machines to reason about entity states within the dynamical narratives. Current procedural text understanding approaches are commonly \textbf{entity-wise}, which separately track each entity and independently predict different states of each entity. Such an entity-wise paradigm does not consider the interaction between entities and their states. In this paper, we propose a new \textbf{scene-wise} paradigm for procedural text understanding, which jointly tracks states of all entities in a scene-by-scene manner. Based on this paradigm, we propose \textbf{S}cene \textbf{G}raph \textbf{R}easoner (\textbf{SGR}), which introduces a series of dynamically evolving scene graphs to jointly formulate the evolution of entities, states and their associations throughout the narrative. In this way, the deep interactions between all entities and states can be jointly captured and simultaneously derived from scene graphs. Experiments show that SGR not only achieves the new state-of-the-art performance but also significantly accelerates the speed of reasoning.
description: 9 pages, 2 figures
VVV-WIT-08: the giant star that blinked
Creators: name: Smith, Leigh C.
name: Koposov, Sergey E.
name: Lucas, Philip W.
name: Sanders, Jason L.
name: Minniti, Dante
name: Udalski, Andrzej
name: Evans, N. Wyn
name: Aguado, David
name: Ivanov, Valentin D.
name: Saito, Roberto K.
name: Fraga, Luciano
name: Pietrukowicz, Pawel
name: Penoyre, Zephyr
name: González-Fernández, Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the serendipitous discovery of a late-type giant star that exhibited a smooth, eclipse-like drop in flux to a depth of 97 per cent. Minimum flux occurred in April 2012 and the total event duration was a few hundred days. Light curves in V, I and K$_s$ from the Optical Gravitational Lensing Experiment and VISTA Variables in the Via Lactea surveys show a remarkably achromatic event. During 17 years of observational coverage of this source only one such event was detected. The physical properties of the giant star itself appear somewhat unusual, which may ultimately provide a clue towards the nature of the system. By modelling the event as an occultation by an object that is elliptical in projection with uniform transparency, we place limits on its physical size and velocity. We find that the occultation is unlikely to be due to a chance alignment with a foreground object. We consider a number of possible candidates for the occulter, which must be optically thick and possess a radius or thickness in excess of 0.25 au. None are completely satisfactory matches to all the data. The duration, depth and relative achromaticity of the dip mark this out as an exceptionally unusual event, whose secret has still not been fully revealed. We find two further candidates in the VVV survey and we suggest that these systems, and two previously known examples, may point to a broad class of long period eclipsing binaries wherein a giant star is occulted by a circumsecondary disc.
description: 18 pages, 11 figures. Accepted for publication in the MNRAS main journal
Note on 2-rational fields
Creators: name: Gras, Georges
name: Jaulent, Jean-François
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R32 11R34 11R37 11R70

description: We compute the Galois group of the maximal 2-ramified and complexified pro-2-extension of any 2-rational number field.
description: This Note is motivated by the paper ``Galois 2-extensions unramified outside 2'' of J. Jossey. We bring into focus some classical technics on abelian $\ell$-ramification which considerably simplify proofs in such subjects; for instance, the main Theorem 2, due to J-F. Jaulent, generalizes the purpose of Jossey's paper
Dynamics of a stretched nonlinear polymer chain
Creators: name: Febbo, M.
name: Milchev, A.
name: Rostiashvili, V.
name: Vilgis, T. A.
name: Dimitrov, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the relaxation dynamics of a coarse-grained polymer chain at different degrees of stretching by both analytical means and numerical simulations. The macromolecule is modelled as a string of beads, connected by anharmonic springs, subject to a tensile force applied at the end monomer of the chain while the other end is fixed at the origin of coordinates. The impact of bond non-linearity on the relaxation dynamics of the polymer at different degrees of stretching is treated analytically within the Gaussian self-consistent approach (GSC) and then compared to simulation results derived from two different methods: Monte-Carlo (MC) and Molecular Dynamics (MD). At low and medium degrees of chain elongation we find good agreement between GSC predictions and the Monte-Carlo simulations. However, for strongly stretched chains the MD method, which takes into account inertial effects, reveals two important aspects of the nonlinear interaction between monomers: (i) a coupling and energy transfer between the damped, oscillatory normal modes of the chain, and (ii) the appearance of non-vanishing contributions of a continuum of frequencies around the characteristic modes in the power spectrum of the normal mode correlation functions.
description: 17 pages, 9 figures
Geometric Approach to Pontryagin's Maximum Principle
Creators: name: Barbero-Liñán, María
name: Muñoz-Lecanda, Miguel C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 34A12, 49J15, 49J30,49K05, 49K15,93C15

description: Since the second half of the 20th century, Pontryagin's Maximum Principle has been widely discussed and used as a method to solve optimal control problems in medicine, robotics, finance, engineering, astronomy. Here, we focus on the proof and on the understanding of this Principle, using as much geometric ideas and geometric tools as possible. This approach provides a better and clearer understanding of the Principle and, in particular, of the role of the abnormal extremals. These extremals are interesting because they do not depend on the cost function, but only on the control system. Moreover, they were discarded as solutions until the nineties, when examples of strict abnormal optimal curves were found. In order to give a detailed exposition of the proof, the paper is mostly self\textendash{}contained, which forces us to consider different areas in mathematics such as algebra, analysis, geometry.
description: Final version. Minors changes have been made. 56 pages
Electron spin resonance in Kondo systems
Creators: name: Abrahams, Elihu
name: Wölfle, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate the dynamical spin response of Kondo impurity and Kondo lattice systems within a semiphenomenological Fermi liquid description, at low temperatures $T
description: Typos corrected, references updated, minor text changes
Path integral formulation of fractional Brownian motion for general Hurst exponent
Creators: name: Calvo, Ivan
name: Sanchez, Raul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In J. Phys. A: Math. Gen. 28, 4305 (1995), K. L. Sebastian gave a path integral computation of the propagator of subdiffusive fractional Brownian motion (fBm), i.e. fBm with a Hurst or self-similarity exponent $H\in(0,1/2)$. The extension of Sebastian's calculation to superdiffusion, $H\in(1/2,1]$, becomes however quite involved due to the appearance of additional boundary conditions on fractional derivatives of the path. In this paper, we address the construction of the path integral representation in a different fashion, which allows to treat both subdiffusion and superdiffusion on an equal footing. The derivation of the propagator of fBm for general Hurst exponent is then performed in a neat and unified way.
description: 6 pages. Published version
The Landau gauge gluon and ghost propagator in the refined Gribov-Zwanziger framework in 3 dimensions
Creators: name: Dudal, D.
name: Gracey, J. A.
name: Sorella, S. P.
name: Vandersickel, N.
name: Verschelde, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In previous works, we have constructed a refined version of the Gribov-Zwanziger action in 4 dimensions, by taking into account a novel dynamical effect. In this paper, we explore the 3-dimensional case. Analogously as in 4 dimensions, we obtain a ghost propagator behaving like $1/p^2$ in the infrared, while the gluon propagator reaches a finite nonvanishing value at zero momentum. Simultaneously, a clear violation of positivity by the gluon propagator is also found. This behaviour of the propagators turns out be in agreement with the recent numerical simulations.
description: 26 pages, 16 .eps figures. v3: version accepted for publication in Phys Rev D
Multi-component DHOST analysis in galaxy clusters
Creators: name: Laudato, Enrico
name: Salzano, Vincenzo
name: Umetsu, Keiichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Extended Theories of Gravity with additional scalar degrees of freedom have recently acquired increasing interest due to the presence of a screening mechanism that allows suppressing at small scales (e.g., the Solar System scale) every modification restoring General Relativity. In this work, we consider a second-order Extended Theory of Gravity belonging to the family of Degenerate High Order Scalar Tensor theories (DHOST) characterized by a partial breaking of the Vainshtein screening mechanism. We study this model in two different scenarios as a description of dark energy only and as a description of both dark matter and dark energy. Such scenarios have been tested here by analysing a sample of 16 high-mass galaxy clusters targeted by the Cluster Lensing and Supernova survey with Hubble (CLASH) program using two complementary probes, namely X-ray and strong-and-weak gravitational lensing observations. In mass modelling, we adopt a multi-component approach including hot gas and galactic stellar contributions. For the majority of the clusters in our sample, results show mild Bayesian evidence in favour of the DHOST model as a description of dark energy over General Relativity. This model also appears to alleviate the discrepancy present in General Relativity between X-ray hydrostatic and lensing mass estimates. For the second scenario where gravity acts as both dark energy and dark matter due to the partial breaking of the Vainshtein screening mechanism at cluster scales, the model is statistically disfavoured compared to General Relativity.
description: 20 pages, 2 tables, 6 figures. Comments are welcome
Racetrack Inflation and Cosmic Strings
Creators: name: Brax, Philippe
name: van de Bruck, Carsten
name: Davis, Anne-Christine
name: Davis, Stephen C.
name: Jeannerot, Rachel
name: Postma, Marieke
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the coupling of racetrack inflation to matter fields as realised in the D3/D7 brane system. In particular, we investigate the possibility of cosmic string formation in this system. We find that string formation before or at the onset of racetrack inflation is possible, but they are then inflated away. Furthermore, string formation at the end of inflation is prevented by the presence of the moduli sector. As a consequence, no strings survive racetrack inflation.
description: 15 pages, 5 figures
Highest-Resolution Rotation Curve of the Inner Milky Way proving the Galactic Shock Wave
Creators: name: Sofue, Yoshiaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a rotation curve (RC) of the inner Galaxy of the 1st quadrant at $10°\le l \le 50°~ (R=1.3-6.2~{\rm kpc})$ with the highest spatial (2 pc) and velocity (1.3 km/s) resolutions. We used the ${^{12}}$CO(J=1-0)-line survey data observed with the Nobeyama 45-m telescope at an effective angular resolution of $20"$ (originally $15")$, and applied the tangent-velocity method to the longitude-velocity diagrams by employing the Gaussian deconvolution of the individual CO-line profiles. A number of RC bumps, or local variation of rotation velocity, with velocity amplitudes $\pm \sim 9$ km/s and radial scale length $\sim 0.5-1$ kpc are superposed on the mean rotation velocity. The prominent velocity bump and corresponding density variation around $R\sim 4$ kpc in the tangential direction of the Scutum arm (4-kpc molecular arm) is naturally explained by an ordinary galactic shock wave in a spiral arm with small pitch angle, not necessarily requiring a bar-induced strong shock. Tables of RC are available at the PASJ supplementary data site and http://www.ioa.s.u-tokyo.ac.jp/~sofue/h-rot.htm.
description: PASJ Letters accepted, 6 pages, 5 figures
Cross-sections of the sphere and J-theory
Creators: name: Mauro, David J.
Publisher: name: University of British Columbia
Year: 2010

description: Let F denote the field R or C. Let 0[sub n,k] denote the manifold of orthonormal k-frames in Fⁿ, where 1 ≤ k ≤ n. We can fibre over 0[sub n,k] by taking the last vector in each k-frame. Here d = 1 or 2, according to whether F equals R or C. A cross-section, S[sup dn-1] →0[sub n,k], assigns to each point u ε S[sup dn-1] an orthonormal k-frame (u₁, u₂, + +, u[sub k-1], u). We wish to determine values for n and k which will guarantee the existence of such a cross-section. In the real case this is the classical vector fields on spheres problem. Atiyah and James prove that the cross-sectioning problem is equivalent to a problem in J-theory. Let J (X) denote the set of equivalence classes of stable fibre homotopic orthogonal sphere bundles over a finte CW-complex X. It is well known that J (X) is a finite abelian group. If α is an F - vector bundle over X, we can associate with it a unique sphere bundle which we will denote by (α). The class of (α) will be denoted by J (α). Let ξ denote the canonical real d-dimensional Hopf line bundle over the F - projective space P[sup k]. The link between cross-sectioning and J-theory can be stated as follows: The Stiefel fibring 0[sub n,k] →S[sup dn-1] admits a cross-section if and only if n is a multiple of the order of J (ξ) in J (P[sup k]). Thus the problem of finding cross-sections has been reduced to determining the J-order of ξ, in J (P[sup k]).
Aspect ratio dependence in magnetorotational instability shearing box simulations
Creators: name: Bodo, G.
name: Mignone, A.
name: Cattaneo, F.
name: Rossi, P.
name: Ferrari, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We study the changes in the properties of turbulence driven by the magnetorotational instability in a shearing box, as the computational domain size in the radial direction is varied relative to the height Methods: We perform 3D simulations in the shearing box approximation, with a net magnetic flux, and we consider computational domains with different aspect ratios Results: We find that in boxes of aspect ratio unity the transport of angular momentum is strongly intermittent and dominated by channel solutions in agreement with previous work. In contrast, in boxes with larger aspect ratio, the channel solutions and the associated intermittent behavior disappear. Conclusions: There is strong evidence that, as the aspect ratio becomes larger, the characteristics of the solution become aspect ratio independent. We conclude that shearing box calculations with aspect ratio unity or near unity may introduce spurious effects.
description: 5 pages, 6 figures, Astronomy and Astrophysics accepted
Kinematics and physical properties of Southern interacting galaxies: the minor merger AM 2306-721
Creators: name: Krabbe, A. C.
name: Pastoriza, M. G.
name: Winge, Claudia
name: Rodrigues, I.
name: Ferreiro, D. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an observational study about the effects of the interactions in the kinematics, stellar population and abundances of the components of the galaxy pair AM2306-721. Rotation curves for the main and companion galaxies were obtained, showing a deprojected velocity amplitude of 175 km/s and 185 km/s, respectively. The interaction between the main and companion galaxies was modeled using numerical N-body/hydrodynamical simulations, with the result indicating that the current stage of the merger would be about 250 Myr after perigalacticum. The spatial variation in the distribution of the stellar population components in both galaxies was analysed by fitting combinations of stellar population models of different age groups. The central region of main galaxy is dominated by an old (5-10 Gyr) population, while significant contributions from a young (200 Myr) and intermediate (1 Gyr) components are found in the disk, being enhanced in the direction of the tidal features. The stellar population of the companion galaxy is overall much younger, being dominated by components with 1 Gyr or less, quite widely spread over the whole disk. Spatial profiles of the oxygen abundance were obtained from the a grid of photoionization models using the R23 line ratio. The disk of the main galaxy shows a clear radial gradient, while the companion galaxy presents an oxygen abundance relatively homogeneous across the disk. The absence of an abundance gradient in the secondary galaxy is interpreted in terms of mixing by gas flows from the outer parts to the center of the galaxy due to the gravitational interaction with the more massive primary.
description: 13 pages, 12 figures, accepted for publication on MNRAS
Nearly itinerant electronic groundstate in the intercalated honeycomb iridate Ag$_3$LiIr$_2$O$_6$
Creators: name: de la Torre, A.
name: Zager, B.
name: Bahrami, F.
name: DiScala, M.
name: Chamorro, J. R.
name: Upton, M. H.
name: Fabbris, G.
name: Haskel, D.
name: Casa, D.
name: McQueen, T. M.
name: Tafti, F.
name: Plumb, K. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use x-ray spectroscopy at Ir L$_3$/L$_2$ absorption edge to study powder samples of the intercalated honeycomb magnet Ag$_3$LiIr$_2$O$_6$. Based on x-ray absorption and resonant inelastic x-ray scattering measurements, and exact diagonalization calculations including next-neighbour Ir-Ir electron hoping integrals, we argue that the intercalation of Ag atoms results in a nearly itinerant electronic structure with enhanced Ir-O hybridization. As a result of the departure from the local relativistic $j_{\rm eff}\! = \!1/2$ state, we find that the relative orbital contribution to the magnetic moment is increased, and the magnetization density is spatially extended and asymmetric. Our results confirm the importance of metal - ligand hybridazation in the magnetism of transition metal oxides and provide empirical guidance for understanding the collective magnetism in intercalated honeycomb iridates.