Miracle-dz/UniFAR-FTUs huggingface dataset:
PSR J2030+3641: RADIO DISCOVERY AND GAMMA-RAY STUDY OF A MIDDLE-AGED PULSAR IN THE NOW IDENTIFIED FERMI-LAT SOURCE 1FGL J2030.0+3641

In a radio search with the Green Bank Telescope of three unidentified low Galactic latitude Fermi Large Area Telescope (LAT) sources, we have discovered the middle-aged pulsar J2030+3641 associated with 1FGL J2030.0+3641 (2FGL J2030.0+3640). Following the detection of gamma-ray pulsations using a radio ephemeris, we have obtained a phase-coherent timing solution based on gamma-ray and radio pulse arrival times which spans the entire Fermi mission. With a rotation period of 0.2 s, a spin-down luminosity of 3 × 1034 erg s−1, and a characteristic age of 0.5 Myr, PSR J2030+3641 is a middle-aged neutron star with spin parameters similar to those of the exceedingly gamma-ray-bright and radio-undetected Geminga. Its gamma-ray flux is 1% that of Geminga, primarily because of its much larger distance, as suggested by the large integrated column density of free electrons, DM = 246 pc cm−3. We fit the gamma-ray light curve, along with limited radio polarimetric constraints, to four geometrical models of magnetospheric emission, and while none of the fits have high significance some are encouraging and suggest that further refinements of these models may be worthwhile. We argue that not many more non-millisecond radio pulsars may be detected along the Galactic plane that are responsible for LAT sources, but that modified methods to search for gamma-ray pulsations should be productive—PSR J2030+3641 would have been found blindly in gamma rays if only ≳ 0.8 GeV photons had been considered, owing to its relatively flat spectrum and location in a region of high soft background.
Gribov horizon and spontaneous BRST symmetry breaking

An equivalent formulation of the Gribov-Zwanziger theory accounting for the gauge fixing ambiguity in the Landau gauge is presented. The resulting action is constrained by a Slavnov-Taylor identity stemming from a nilpotent exact Becchi-Rouet-Stora-Tyutin (BRST) invariance which is spontaneously broken due to the presence of the Gribov horizon. This spontaneous symmetry breaking can be described in a purely algebraic way through the introduction of a pair of auxiliary fields which give rise to a set of linearly broken Ward identities. The Goldstone sector turns out to be decoupled. The underlying exact nilpotent BRST invariance allows us to employ BRST cohomology tools within the Gribov horizon to identify renormalizable extensions of gauge invariant operators. Using a simple toy model and appropriate Dirac bracket quantization, we discuss the time evolution invariance of the operator cohomology. We further comment on the unitarity issue in a confining theory, and stress that BRST cohomology alone is not sufficient to ensure unitarity, a fact that, although well known, is frequently ignored.
Look More Than Once: An Accurate Detector for Text of Arbitrary Shapes

Previous scene text detection methods have progressed substantially over the past years. However, limited by the receptive field of CNNs and the simple representations like rectangle bounding box or quadrangle adopted to describe text, previous methods may fall short when dealing with more challenging text instances, such as extremely long text and arbitrarily shaped text. To address these two problems, we present a novel text detector namely LOMO, which localizes the text progressively for multiple times (or in other word, LOok More than Once). LOMO consists of a direct regressor (DR), an iterative refinement module (IRM) and a shape expression module (SEM). At first, text proposals in the form of quadrangle are generated by DR branch. Next, IRM progressively perceives the entire long text by iterative refinement based on the extracted feature blocks of preliminary proposals. Finally, a SEM is introduced to reconstruct more precise representation of irregular text by considering the geometry properties of text instance, including text region, text center line and border offsets. The state-of-the-art results on several public benchmarks including ICDAR2017-RCTW, SCUT-CTW1500, Total-Text, ICDAR2015 and ICDAR17-MLT confirm the striking robustness and effectiveness of LOMO.
Expansion of the conditional probability function in a network with nearest-neighbour degree correlations

A useful property of a network that can be used to characterize many systems is the degree distribution. However, many complex networks exhibit higher--order degree correlations that must be studied through other means, such as clustering coefficients, the Newman r factor, and the average nearest neighbour degree (ANND). In this paper we develop an expansion of the conditional probability that can be used to parameterize such degree correlations. The measures of degree correlations associated with this expansion can be used to signal the presence of non--linear correlations.
OHMIC DISSIPATION IN THE ATMOSPHERES OF HOT JUPITERS

Hot Jupiter atmospheres exhibit fast, weakly ionized winds. The interaction of these winds with the planetary magnetic field generates drag on the winds and leads to ohmic dissipation of the induced electric currents. We study the magnitude of ohmic dissipation in representative, three-dimensional atmospheric circulation models of the hot Jupiter HD 209458b. We find that ohmic dissipation can reach or exceed 1% of the stellar insolation power in the deepest atmospheric layers, in models with and without dragged winds. Such power, dissipated in the deep atmosphere, appears sufficient to slow down planetary contraction and explain the typically inflated radii of hot Jupiters. This atmospheric scenario does not require a top insulating layer or radial currents that penetrate deep in the planetary interior. Circulation in the deepest atmospheric layers may actually be driven by spatially non-uniform ohmic dissipation. A consistent treatment of magnetic drag and ohmic dissipation is required to further elucidate the consequences of magnetic effects for the atmospheres and the contracting interiors of hot Jupiters.
METHOD DEVELOPMENT AND VALIDATION FOR THE DETERMINATION OF ELEMENTAL IMPURITIES IN MEDROXYPROGESTERONE TABLETS 10mg BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY

The analytical method development and validation of Medroxyprogesterone tablets 10mg summarizes the outcome of the results for content of Cadmium, Lead, Arsenic, Mercury, and Lithium in by ICP-MS1. The test sample was prepared with microwave assisted acid digestion and introduced into optimized instrumental parameters for use of a quadruple based Agilent 7700 inductively coupled plasma mass spectrometry instrument. This method development and validation by ICP-MS to prove that it is Specific, Precise, Accurate, Linear, Robust, Reproducible and Capable of producing reliable results.
Evolution of N/O Abundance Ratios and Ionization Parameters from z~0 to 2 Investigated by the Direct Temperature Method

We present N/O abundance ratios, ionization parameters {$q_{\rm ion}$}, and oxygen abundance O/H for a total of 41 galaxies (11 individual galaxies and a 30-galaxy stack) including {Ly$\alpha$} emitters and Lyman break galaxies at $z\sim 2$, and investigate galaxy evolution from $z\sim 0$ to $2$ in conjunction with 208,529 local SDSS galaxies and 9 green pea galaxies (GPs). In contrast with most of the recent studies, we obtain the N/O ratio, {$q_{\rm ion}$}, and O/H measurements by direct $T_{\rm e}$ methods with {[O\,\textsc{iii}]} $\lambda$4363 and {O\,\textsc{iii}]} $\lambda$1665 lines. Based on these reliable measurements, we find that there exist $z\sim 2$ galaxies with an excess of N/O falling beyond the local average of N/O--O/H relation, while the majority of the $z\sim 2$ galaxies have the N/O ratios nearly comparable with $z\sim 0$ galaxies in the N/O--stellar mass relation. Our galaxies place the upper limit of N/O ratio $\log ({\rm N/O})\le -1.26$ on average, suggesting that the N/O ratio evolves, if at all, by $<0.17$ dex. Exploiting our reliable measurements free from the N/O--{$q_{\rm ion}$}--O/H degeneracies, we identify, for the first time, that $z\sim 2$ galaxies with offsets in the BPT diagram indicate either 1) only an N/O excess, 2) only a {$q_{\rm ion}$} excess, or 3) both N/O and {$q_{\rm ion}$} excesses. We argue that the BPT offsets at $z\sim 2$ are not made by one of 1)--3) galaxy populations alone, but the composite of 1)--3) populations. We confirm that these 1)--3) populations also exist at $z\sim 0$, such as GPs and SDSS low-mass and high-SFR galaxies (LMHSs).
Survey of non-linear hydrodynamic models of type-II Cepheids

We present a grid on non-linear convective type-II Cepheid models. The dense model grids are computed for 0. 6M_Sun and a range of metallicities ([Fe/H]=-2.0,-1.5,-1.0), and for 0. 8M_Sun ([Fe/H]=-1.5). Two sets of convective parameters are considered. The models cover the full temperature extent of the classical instability strip, but are limited in luminosity; for the most luminous models violent pulsation leads to the decoupling of the outermost model shell. Hence, our survey reaches only the shortest period RV Tau domain. In the Hertzsprung-Russel diagram we detect two domains in which period doubled pulsation is possible. The first extends through the BL Her domain and low luminosity W Vir domain (pulsation periods ~2-6.5 d). The second domain extends at higher luminosities (W Vir domain; periods >9.5d). Some models within these domains display period-4 pulsation. We also detect very narrow domains (~10 K wide) in which modulation of pulsation is possible. Another interesting phenomenon we detect is double-mode pulsation in the fundamental mode and in the fourth radial overtone. Fourth overtone is a surface mode, trapped in the outer model layers. Single-mode pulsation in the fourth overtone is also possible on the hot side of the classical instability strip. The origin of the above phenomena is discussed. In particular, the role of resonances in driving different pulsation dynamics as well as in shaping the morphology of the radius variation curves is analysed.
EFFICIENT COSMIC RAY ACCELERATION, HYDRODYNAMICS, AND SELF-CONSISTENT THERMAL X-RAY EMISSION APPLIED TO SUPERNOVA REMNANT RX J1713.7–3946

We model the broadband emission from supernova remnant (SNR) RX J1713.7–3946 including, for the first time, a consistent calculation of thermal X-ray emission together with non-thermal emission in a nonlinear diffusive shock acceleration model. Our model tracks the evolution of the SNR including the plasma ionization state between the forward shock and the contact discontinuity. We use a plasma emissivity code to predict the thermal X-ray emission spectrum assuming the initially cold electrons are heated either by Coulomb collisions with the shock-heated protons (the slowest possible heating), or come into instant equilibration with the protons. For either electron heating model, electrons reach ≳107 K rapidly and the X-ray line emission near 1 keV is more than 10 times as luminous as the underlying thermal bremsstrahlung continuum. Since recent Suzaku observations show no detectable line emission, this places strong constraints on the unshocked ambient medium density and on the relativistic electron-to-proton ratio. For the uniform circumstellar medium (CSM) models that we consider, the low densities and high relativistic electron-to-proton ratios required to match the Suzaku X-ray observations definitively rule out pion decay as the emission process producing GeV–TeV photons. We show that leptonic models, where inverse-Compton scattering against the cosmic background radiation dominates the GeV–TeV emission, produce better fits to the broadband thermal and non-thermal observations in a uniform CSM.
ReinBo: Machine Learning pipeline search and configuration with Bayesian Optimization embedded Reinforcement Learning

Machine learning pipeline potentially consists of several stages of operations like data preprocessing, feature engineering and machine learning model training. Each operation has a set of hyper-parameters, which can become irrelevant for the pipeline when the operation is not selected. This gives rise to a hierarchical conditional hyper-parameter space. To optimize this mixed continuous and discrete conditional hierarchical hyper-parameter space, we propose an efficient pipeline search and configuration algorithm which combines the power of Reinforcement Learning and Bayesian Optimization. Empirical results show that our method performs favorably compared to state of the art methods like Auto-sklearn , TPOT, Tree Parzen Window, and Random Search.
New data on Noctuoidea from the Canary Islands, Spain (Lepidoptera: Noctuoidea)

We describe three new species: Zebeeba orzolae Falck & Karsholt, sp. n. (Erebidae: Rivulinae), Nyctobrya vilfredi Falck & Karsholt, sp. n. (Noctuidae: Bryophilinae) and Agrotis corralejoi Falck & Karsholt, sp. n. (Noctuidae: Noctuinae). The unknown female of Mniotype loslobensis (Fischer, Saldaitis & Ivinskis, 2007) (Noctuidae: Hadeninae) and its genitalia are described and illustrated. Twelve species are recorded as new to the fauna of the Canary Islands: Epharmottomena eremophila (Rebel, 1895), Eublemma thermobasis Hampson, 1910, Eublemma candidana (Fabricius, 1794), Araeopteron ecphaea (Hampson, 1914), Gnamptonyx innexa (Walker, 1858) and Rhabdophera acrosticta (Püngeler, 1904) (Erebidae), Nycteola columbana (Turner, 1925) (Nolidae), Amyna axis Guenée, 1852, Polymixis aurora commixta (Rungs, 1943), Nonagria typhae (Thunberg, 1784),Mythimna languida (Walker, 1858) and Leucania zeae (Duponchel, 1828) (Noctuidae). Five species are, because ofdifferent errors, removed from the list of Lepidoptera found in the Canary Islands: Schrankia taenialis (Hübner, [1809]), Cosmia affinis (Linnaeus, 1767), Hecatera sancta (Staudinger, 1859), Agrotis boeticus (Boisduval, 1837)nd A. aistleitneri Behounek & Speidel, 2009. The genus Gerarctia Hampson, 1905 is, based on personal information from H. Hacker, synonymised with Zebeeba Kirby, 1892, syn. n. , and Gerarctia poliotis Hampson, 1905 is transferred to Zebeeba as Z. poliotis (Hampson, 1905), comb. n. DNA barcodes of Caradrina rebeli Staudinger,1901 from different Canary Islands are compared, and it is concluded that the species occurs in two subspecies: C.rebeli rebeli Staudinger, 1901 and C. rebeli lanzarotensis Pinker, 1962.
The VINCIA Antenna Shower for Hadron Colliders

We summarise the main features of VINCIA's antenna-based treatment of QCD initial- and finalstate showers, which includes iterated tree-level matrix-element corrections and automated evaluations of perturbative shower uncertainties. The latter are computed on the fly and are cast as a set of alternative weights for each generated event. The resulting algorithm has been made publicly available as a plug-in to the PYTHIA 8 event generator.
SELECTION EFFECTS ON THE OBSERVED REDSHIFT DEPENDENCE OF GAMMA-RAY BURST JET OPENING ANGLES

An apparent redshift dependence of the jet opening angles (θj) of gamma-ray bursts (GRBs) is observed from the current GRB sample. We investigate whether this dependence can be explained with instrumental selection effects and observational biases by a bootstrapping method. Assuming that (1) the GRB rate follows the star formation history and the cosmic metallicity history and (2) the intrinsic distributions of the jet-corrected luminosity (Lγ) and θj are a Gaussian or a power-law function, we generate a mock Swift/Burst Alert Telescope (BAT) sample by considering various instrumental selection effects, including the flux threshold and the trigger probability of BAT, the probabilities of a GRB jet pointing to the instrument solid angle, and the probability of redshift measurement. Our results reproduce the observed θj − z dependence well. We find that in the case of Lγ∝θ2j good consistency between the mock and observed samples can be obtained, indicating that both Lγ and θj are degenerate for a flux-limited sample. The parameter set (Lγ, θj) = (4.9 × 1049 erg s−1, 0.054 rad) gives the best consistency for the current Swift GRB sample. Considering the beaming effect, the derived intrinsic local GRB rate is accordingly 2.85 × 102 Gpc−3 yr−1, inferring that ∼0.59% of Type Ib/c supernovae may be accompanied by a GRB.
SCALING OF COMPRESSIBLE MAGNETOHYDRODYNAMIC TURBULENCE IN THE FAST SOLAR WIND

The role of compressible fluctuations in the energy cascade of fast solar wind turbulence is studied using a reduced form of an exact law derived recently for compressible isothermal magnetohydrodynamics and in situ observations from the THEMIS B/ARTEMIS P1 spacecraft. A statistical survey of the data revealed a turbulent energy cascade over a range of two decades of scales that is broader than the previous estimates made from an exact incompressible law. A term-by-term analysis of the compressible model reveals new insight into the role played by the compressible fluctuations in the energy cascade. The compressible fluctuations are shown to amplify by two to four times the turbulent cascade rate with respect to the incompressible model in of the analyzed samples. This new estimated cascade rate is shown to provide the adequate energy dissipation required to account for the local heating of the non-adiabatic solar wind.
The Egyptian Labour Market, Determinants of Employment and Wage Estimation

This study empirically evaluates the factors influencing employment in Egypt by using the recently published cross-sectional Egyptian Labour Force Survey, 2019. The logistic regression analysis revealed that being older, male, married, and living in a rural region increased the probability of an individual being employed. Contrary to the assumption of the human capital theory, the attainment of all education levels appeared to reduce the likelihood of attaining employment in the Egyptian labour market. Moreover, the multiple linear regression reveals significant factors influencing wage estimation in the Egyptian labour market. Some of those factors were related to individual characteristics, while others related to employer characteristics, emphasising the critical role of both sides of the labour market in estimating wages. However, other socioeconomic factors should be determined in order to increase the overall model interpretation.
ACCELERATION OF ULTRA-HIGH-ENERGY COSMIC RAYS IN THE COLLIDING SHELLS OF BLAZARS AND GAMMA-RAY BURSTS: CONSTRAINTS FROM THE FERMI GAMMA-RAY SPACE TELESCOPE

Fermi Gamma-ray Space Telescope measurements of spectra, variability timescales, and maximum photon energies give lower limits to the apparent jet powers and, through γγ opacity arguments, the bulk Lorentz factors of relativistic jets. The maximum cosmic-ray particle energy is limited by these two quantities in Fermi acceleration scenarios. Recent data are used to constrain the maximum energies of cosmic-ray protons and Fe nuclei accelerated in colliding shells of gamma-ray bursts (GRBs) and blazars. The Fermi results indicate that Fe rather than protons are more likely to be accelerated to ultra-high energies in active galactic nuclei (AGNs), whereas powerful GRBs can accelerate both protons and Fe to ≳1020 eV. Emissivity of nonthermal radiation from radio galaxies and blazars is estimated from the First Fermi AGN Catalog, and shown to favor BL Lac objects and FR1 radio galaxies over flat spectrum radio quasars, FR2 radio galaxies, and long-duration GRBs as the sources of ultra-high-energy cosmic rays.
A streaming feature-based compression method for data from instrumented infrastructure

An increasing amount of civil engineering applications are utilising data acquired from infrastructure instrumented with sensing devices. This data has an important role in monitoring the response of these structures to excitation, and evaluating structural health. In this paper we seek to monitor pedestrian-events (such as a person walking) on a footbridge using strain and acceleration data. The rate of this data acquisition and the number of sensing devices make the storage and analysis of this data a computational challenge. We introduce a streaming method to compress the sensor data, whilst preserving key patterns and features (unique to different sensor types) corresponding to pedestrian-events. Numerical demonstrations of the methodology on data obtained from strain sensors and accelerometers on the pedestrian footbridge are provided to show the trade-off between compression and accuracy during and in-between periods of pedestrian-events.
A survey for hot central stars of planetary nebulae - I. Methods and first results

We present the results of initial spectrographic followup with the Very Large Telescope (UT3, Melipal) for $K_s \ge 14$ Galactic plane CIV emission-line candidates in the near-infrared (NIR). These 7 faint stars all display prominent HeI and CIV emission lines characteristic of a carbon-rich Wolf-Rayet star. They have NIR colours which are much too blue to be those of distant, classical WR stars. The magnitudes and colours are compatible with those expected for central stars of planetary nebulae, and are likely to come from massive progenitor populations, and themselves be more massive than any sample of planetary nebulae known. Our survey has identified thousands of such candidates.
Convergence of maximum bisection ratio of sparse random graphs

We consider sequences of large sparse random graphs whose degree distribution approaches a limit with finite mean. This model includes both the random regular graphs and the Erd\"os-Renyi graphs of constant average degree. We prove that the maximum bisection ratio of such a graph sequence converges almost surely to a deterministic limit. We extend this result to so-called 2-spin spin glasses in the paramagnetic to ferromagnetic regime. Our work generalizes the graph interpolation method to some non-additive graph parameters.
Optical polarimetric study of open clusters: distribution of interstellar matter towards NGC 654

ABSTRACT We present new B,V and R linear polarimetric observations for 61 starstowards the region of the young open cluster NGC 654. In this study we foundevidence for the presence of at least two layers of dust along the line of sight tothe cluster. The distances to the two dust layers are estimated to be ∼ 200 pcand ∼ 1 kpc which are located much closer to the Sun than the cluster (∼ 2.4kpc). Both the dust layers have their local magnetic ﬁeld orientation nearlyparallel to the direction of the Galactic plane. The foreground dust layer isfound to have a ring morphology with the central hole coinciding with thecenter of the cluster. The foreground dust grains are suggested to be mainlyresponsible for both the observed diﬀerential reddening and the polarizationtowards the cluster.Keywords: polarization-dust, extinction-openclustersandassociations:individual:NGC 654 1 INTRODUCTIONThe wavelength dependence of interstellar extinction and polarization provides constraintson the characteristics of interstellar grains. Interstellar polarization strongly varies withwavelength (Serkowski, Mathewson & Ford 1975; Wilking et al. 1980). In particular, thewavelength of maximum interstellar polarization (λ