cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Recent X-Recent X-ray observations of the symbiotic star AG Peg: do they signify Colliding Stellar Winds?
Creators: name: Zhekov, Svetozar A.
name: Tomov, Toma
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an analysis of recent X-ray observations of the symbiotic star AG Peg. The X-ray emission of AG Peg as observed with Swift in 2015 shows considerable variability on time scale of days as variability on shorter time scales might be present as well. Analysis of the X-ray spectra obtained in 2013 and 2015 confirms that AG Peg is an X-ray source of class $β$ of the X-ray sources amongst the symbiotic stars. The X-ray emission of AG Peg as observed with ROSAT (1993 June) might well originate from colliding stellar winds (CSW) in binary system. On the other hand, the characteristics of the X-ray emission of AG Peg in 2013 and 2015 (Swift) are hard to accommodate in the framework of the CSW picture. Analysis of the light curves in 2015 shows that the power spectrum of the X-ray variability in AG Peg resembles that of the flicker noise (or flickering) being typical for accretion processes in astronomical objects. This is a sign that CSWs did not play a key role for the X-ray emission from AG Peg in 2013-2015 and a different mechanism (probably accretion) is also getting into play.
description: Accepted for publication in MNRAS; 11 pages, 8 figires, 2 tables
The effect of cosmic web filaments on the properties of groups and their central galaxies
Creators: name: Poudel, Anup
name: Heinämäki, Pekka
name: Tempel, Elmo
name: Einasto, Maret
name: Lietzen, Heidi
name: Nurmi, Pasi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The nature versus nurture scenario in galaxy and group evolution is a long-standing problem not yet fully understood on cosmological scales. We study the properties of groups and their central galaxies in different large-scale environments defined by the luminosity density field and the cosmic web filaments. We use the luminosity density field constructed using 8 Mpc/h smoothing to characterize the large-scale environments and the Bisous model to extract the filamentary structures in different large-scale environments. We find differences in the properties of central galaxies and their groups in and outside of filaments at fixed halo and large-scale environments. In high-density environments, the group mass function has higher number densities in filaments compared to that outside of filaments towards the massive end. The relation is opposite in low-density environments. At fixed group mass and large-scale luminosity density, groups in filaments are slightly more luminous and their central galaxies have redder colors, higher stellar masses, and lower specific star formation rates than those outside of filaments. However, the differences in central galaxy and group properties in and outside of filaments are not clear in some group mass bins. We show that the differences in central galaxy properties are due to the higher abundances of elliptical galaxies in filaments. Filamentary structures in the cosmic web are not simply visual associations of galaxies, but rather play an important role in shaping the properties of groups and their central galaxies. The differences in central galaxy and group properties in and outside of cosmic web filaments are not simple effects related to large-scale environmental density. The results point towards an efficient mechanism in cosmic web filaments which quench star formation and transform central galaxy morphology from late to early types.
description: 18 pages, 9 figures, Accepted for publication in Astronomy & Astrophysics (A&A)
Measurement of the in-plane thermal conductivity by steady-state infrared thermography
Creators: name: Greppmair, Anton
name: Stoib, Benedikt
name: Saxena, Nitin
name: Gerstberger, Caroline
name: Müller-Buschbaum, Peter
name: Stutzmann, Martin
name: Brandt, Martin S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We demonstrate a simple and quick method for the measurement of the in-plane thermal conductance of thin films via steady-state IR thermography. The films are suspended above a hole in an opaque substrate and heated by a homogeneous visible light source. The temperature distribution of the thin films is captured via infrared microscopy and fitted to the analytical expression obtained for the specific hole geometry in order to obtain the in-plane thermal conductivity. For thin films of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate post-treated with ethylene glycol and of polyimide we find conductivities of 1.0 W/mK and 0.4 W/mK at room temperature, respectively. These results are in very good agreement with literature values, validating the method developed.
Critical Current Oscillations of Josephson Junctions Containing PdFe Nanomagnets
Creators: name: Glick, Joseph A.
name: Loloee, Reza
name: Pratt,, W. P.
name: Birge, Norman O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Josephson junctions with ferromagnetic layers are vital elements in a new class of cryogenic memory devices. One style of memory device contains a spin valve with one "hard" magnetic layer and one "soft" layer. To achieve low switching fields, it is advantageous for the soft layer to have low magnetization and low magnetocrystalline anisotropy. A candidate class of materials that fulfills these criteria is the Pd$_{1-x}$Fe$_{x}$ alloy system with low Fe concentrations. We present studies of micron-scale elliptically-shaped Josephson junctions containing Pd$_{97}$Fe$_{3}$ layers of varying thickness. By applying an external magnetic field, the critical current of the junctions are found to follow characteristic Fraunhofer patterns. The maximum value of the critical current, extracted from the Fraunhofer patterns, oscillates as a function of the ferromagnetic barrier thickness, indicating transitions in the phase difference across the junction between values of zero and $π$.
description: 5 pages, 5 figures
Exact results for polaron and molecule in one-dimensional spin-1/2 Fermi gas
Creators: name: Mao, Runxin
name: Guan, X. W.
name: Wu, Biao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Using exact Bethe ansatz (BA) solutions, we show that a spin-down fermion immersed into a fully polarized spin-up Fermi sea with a weak attraction is dressed by the surrounding spin-up fermions to form the one-dimensional analog of a polaron. As the attraction becomes strong, the spin-down fermion binds with one spin-up fermion to form a tightly bound molecule. Throughout the whole interaction regime, a crossover from the polaron to a molecule state is fully demonstrated through exact results of the excitation spectrum, the effective mass, binding energy and kinetic energy. Furthermore, a clear distinction between the polaron and molecule is conceived by the probability distribution, single particle reduced density matrix and density-density correlations, which are calculated directly from the Bethe ansatz wave function. Such a polaron-molecule crossover presents a universal nature of an impurity immersed into a fermionic medium with an attraction in one dimension.
description: 11 pages, 7 figures
Observations of Ellerman bomb emission features in He I D3 and He I 10830 Å
Creators: name: Libbrecht, Tine
name: Joshi, Jayant
name: Rodríguez, Jaime de la Cruz
name: Leenaarts, Jorrit
name: Ramos, Andrés Asensio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Ellerman bombs (EBs) are short-lived emission features, characterized by extended wing emission in hydrogen Balmer lines. Until now, no distinct signature of EBs has been found in the He I 10830 Å line, and conclusive observations of EBs in He I D 3 have never been reported. Aims. We aim to study the signature of EBs in neutral helium triplet lines. Methods. The observations consist of 10 consecutive SST/TRIPPEL raster scans close to the limb, featuring the H$β$, He I D3 and He I 10830 Å spectral regions. We also obtained raster scans with IRIS and make use of the SDO/AIA 1700 Å channel. We use Hazel to invert the neutral helium triplet lines. Results. Three EBs in our data show distinct emission signatures in neutral helium triplet lines, most prominently visible in the He I D3 line. The helium lines have two components: a broad and blue-shifted emission component associated with the EB, and a narrower absorption component formed in the overlying chromosphere. One of the EBs in our data shows evidence of strong velocity gradients in its emission component. The emission component of the other two EBs could be fitted using a constant slab. Our analysis hints towards thermal Doppler motions having a large contribution to the broadening for helium and IRIS lines. We conclude that the EBs must have high temperatures to exhibit emission signals in neutral helium triplet lines. An order of magnitude estimate places our observed EBs in the range of $T\sim 2\cdot 10^4-10^5$ K.
description: 15 pages, 14 figures
Circular and Linear Photogalvanic Effects in Type-II GaSb/InAs Quantum Well Structures in the Inverted Regime
Creators: name: Plank, H.
name: Tarasenko, S. A.
name: Hummel, T.
name: Knebl, G.
name: Pfeffer, P.
name: Kamp, M.
name: Höfling, S.
name: Ganichev, S. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the observation of photogalvanic effects induced by terahertz radiation in type-II GaSb/InAs quantum wells with inverted band order. Photocurrents are excited at oblique incidence of radiation and consists of several contributions varying differently with the change of the radiation polarization state; the one driven by the helicity and the other one driven by the linearly polarization of radiation are of comparable magnitudes. Experimental and theoretical analyses reveal that the photocurrent is dominated by the circular and linear photogalvanic effects in a system with a dominant structure inversion asymmetry. A microscopic theory developed in the framework of the Boltzmann equation of motion considers both photogalvanic effects and describes well all the experimental findings.
Statistical Treatment of Beam Position Monitor Data
Creators: name: Reiter, Andreas
name: Singh, Rahul
name: Chorniy, Oleksandr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We review beam position monitors adopting the perspective of an analogue-to- digital converter in a sampling data acquisition system. From a statistical treatment of independent data samples we derive basic formulae of position uncertainty for beam position monitors. Uncertainty estimates only rely on a few simple model parameters and have been calculated for two "practical" signal shapes, a square pulse and a triangular pulse. The analysis has been carried out for three approaches: the established signal integration and root-sum-square ap- proaches, and a least-square fit for the models of direct proportion and straight-line. The latter approach has not been reported in the literature so far. The straight-line fit provides the most robust estimator since it does not require baseline restoration, it is immune to signal offsets, and its standard deviation is smallest. Consequently, of the analysed estimators it promises the highest fidelity of results. The fit approach represents a simple, natural way to analyse beam position monitor data which can be easily implemented in hardware and offers potential for new applications.
Heavy Electron doping-induced antiferromagnetic phase as the parent for iron-oxypnictide superconductor LaFeAsO1-xHx
Creators: name: Iimura, Soshi
name: Matsuishi, Satoru
name: Hosono, Hideo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We perform transport measurements and band structure calculations of electron-doped LaFeAsO1-xHx over a wide range of x from 0.01 to 0.66. The T^2 and sqrt(T) dependency of the resistivity are observed at x ~ 0.17 and 0.41, respectively. The sign change of RH without opening of the spin-density-wave gap for 0.45 < x < 0.58 and T < TN as well as the calculated non-nested Fermi surface at x = 0.5 indicate the more localized nature of the AF2 as compared to spin density wave phase at non-doped sample. Considering the results from band calculations and the finite size of Hund' s rule coupling, the change of the normal conducting state with x is reasonably explained by a strong depression of the coherent scale owing to the increased effective Coulomb repulsion in the narrow anti-bonding 3dxy band that approaches the half-filled regime. The following transition from the paramagnet to AF2 is understood as the quenching or ordering of the less-screened spins with a large entropy at low temperature. These results suggest that the normal conducting properties over a wide doping range for the LaFeAsO1-xHx are strongly influenced by the local spins in the incoherent region. Thus, we conclude that the parent phase in LaFeAsO1-xHx is not the spin-density wave but the AF2, which may be primarily responsible for the singular superconducting properties of the 1111 type compared with other iron pnictides.
description: 33 pages, 13 figures, and 1 table including supporting material, Accepted in the Physical Review B
Prevalence and scalable control of localized networks
Creators: name: Duan, Chao
name: Nishikawa, Takashi
name: Motter, Adilson E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: The ability to control network dynamics is essential for ensuring desirable functionality of many technological, biological, and social systems. Such systems often consist of a large number of network elements, and controlling large-scale networks remains challenging because the computation and communication requirements increase prohibitively fast with network size. Here, we introduce a notion of network locality that can be exploited to make the control of networks scalable even when the dynamics are nonlinear. We show that network locality is captured by an information metric and is almost universally observed across real and model networks. In localized networks, the optimal control actions and system responses are both shown to be necessarily concentrated in small neighborhoods induced by the information metric. This allows us to develop localized algorithms for determining network controllability and optimizing the placement of driver nodes. This also allows us to develop a localized algorithm for designing local feedback controllers that approach the performance of the corresponding best global controllers while incurring a computational cost orders-of-magnitude lower. We validate the locality, performance, and efficiency of the algorithms in Kuramoto oscillator networks as well as three large empirical networks: synchronization dynamics in the Eastern U.S. power grid, epidemic spreading mediated by the global air transportation network, and Alzheimer's disease dynamics in a human brain network. Taken together, our results establish that large networks can be controlled with computation and communication costs comparable to those for small networks.
description: Codes are available on GitHub (https://github.com/cduan2020/LocalizedControl/)
A solar twin in the eclipsing binary LL Aqr
Creators: name: Graczyk, D.
name: Smolec, R.
name: Pavlovski, K.
name: Southworth, J.
name: Pietrzynski, G.
name: Maxted, P. F. L.
name: Konorski, P.
name: Gieren, W.
name: Pilecki, B.
name: Taormina, M.
name: Suchomska, K.
name: Karczmarek, P.
name: Gorski, M.
name: Wielgorski, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the course of a project to study eclipsing binary stars in vinicity of the Sun, we found that the cooler component of LL Aqr is a solar twin candidate. This is the first known star with properties of a solar twin existing in a non-interacting eclipsing binary, offering an excellent opportunity to fully characterise its physical properties with very high precision. We used extensive multi-band, archival photometry and the Super-WASP project and high-resolution spectroscopy obtained from the HARPS and CORALIE spectrographs. The spectra of both components were decomposed and a detailed LTE abundance analysis was performed. The light and radial velocity curves were simultanously analysed with the Wilson-Devinney code. The resulting highly precise stellar parameters were used for a detailed comparison with PARSEC, MESA, and GARSTEC stellar evolution models. LL Aqr consists of two main-sequence stars (F9 V + G3 V) with masses of M1 = 1.1949$\pm$0.0007 and M2=1.0337$\pm$0.0007 $M_\odot$, radii R1 = 1.321$\pm$0.006 and R2 = 1.002$\pm$0.005 $R_\odot$, temperatures T1=6080$\pm$45 K and T2=5703$\pm$50 K and solar chemical composition [M/H]=0.02$\pm$0.05 dex. The absolute dimensions, radiative and photometric properties, and atmospheric abundances of the secondary are all fully consistent with being a solar twin. Both stars are cooler by about 3.5 $σ$ or less metal abundant by 5$σ$ than predicted by standard sets of stellar evolution models. When advanced modelling was performed, we found that full agreement with observations can only be obtained for values of the mixing length and envelope overshooting parameters that are hard to accept. The most reasonable and physically justified model fits found with MESA and GARSTEC codes still have discrepancies with observations but only at the level of 1$σ$.
description: Accepted for publication in Astronomy & Astrophysics
Below the iceberg: Low surface brightness astronomy with HST, Euclid, and Roman
Creators: name: Borlaff, Alejandro S.
Publisher: name: Zenodo
Year: 2023
Subjects: Surveys of Nearby Galaxies

description: Our current view of the universe is tightly limited by the light intensity ranges that we are able to detect. Like icebergs partially afloat, apparently well-defined and non-interacting galaxies such as M31 reveal a myriad of satellites, halos, and tidal tails when observed at surface brightness magnitudes lower than 30 mag arcsec-2. Such structures are not always predicted by current Lambda-CDM models, making deep optical and NIR imaging the next frontier for galaxy evolution and cosmology. Extended low surface brightness sources like outer galactic discs, stellar halos, ultra-diffuse galaxies, or the intracluster light trace provide strong observational tests for cosmology and the structure of Dark Matter. Nevertheless, these features are thousands of times dimmer than the sky background, requiring an unprecedented advance in image processing to push the surface brightness limits to such faint levels. Upcoming observatories like NASA/Nancy Grace Roman or ESA/Euclid have the potential to become major cornerstones for the study of galactic formation and evolution, not only at high redshift but also at the dim and extended envelopes of the objects in the Local Universe. In this contribution, we describe the on-going challenges of deep astronomical imaging of extended sources from space, including segmentation, in-orbit detector calibration, as well stray-light correction. By using specific techniques to minimize unwanted systematic effects, structures can be detected down to ~31 mag arcsec−2 in Hubble Space Telescope images. These new techniques make it possible to reveal the large scale structures that surround the galaxies with the HST, which will be critical for the Euclid/VIS survey (Borlaff et al. 2022, Key Project Publication) and the Wide Field Instrument aboard the Nancy Grace Roman Space Telescope. We demonstrate these methods in a new version of the WFC3/IR Hubble Ultra Deep Field (ABYSS HUDF, Borlaff et al. 2019), which improves the detection of extended stellar halos that were invisible until now, revealing that they were double their size at z=0.6-1.0. This new methodology will be fundamental for future space missions with an extremely wide field of view if we want to exploit their capabilities to their true limit, providing unique datasets to study the traces of cosmological evolution in the local Universe and beyond.
Equivariant Cohomology of the Moduli Space of Genus Three Curves with Symplectic Level Two Structure via Point Counts
Creators: name: Bergvall, Olof
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14H10 (Primary), 11G25 (Secondary)

description: We make cohomological computations related to the moduli space of genus three curves with symplectic level two structure by means of counting points over finite fields. In particular, we determine the cohomology groups of the quartic locus as representations of the symmetric group on seven elements.
description: 48 pages, 9 figures, 6 tables
The ISLAndS project II: The Lifetime Star Formation Histories of Six Andromeda dSphs
Creators: name: Skillman, Evan D.
name: Monelli, Matteo
name: Weisz, Daniel R.
name: Hidalgo, Sebastian L.
name: Aparicio, Antonio
name: Bernard, Edouard J.
name: Boylan-Kolchin, Michael
name: Cassisi, Santi
name: Cole, Andrew A.
name: Dolphin, Andrew E.
name: Ferguson, Henry C.
name: Gallart, Carme
name: Irwin, Mike J.
name: Martin, Nicolas F.
name: Martinez-Vazquez, Clara E.
name: Mayer, Lucio
name: McConnachie, Alan W.
name: McQuinn, Kristen B. W.
name: Navarro, Julio F.
name: Stetson, Peter B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Initial Star formation and Lifetimes of Andromeda Satellites (ISLAndS) project uses Hubble Space Telescope imaging to study a representative sample of six Andromeda dSph satellite companion galaxies. The main goal of the program is to determine whether the star formation histories (SFHs) of the Andromeda dSph satellites demonstrate significant statistical differences from those of the Milky Way, which may be attributable to the different properties of their local environments. Our observations reach the oldest main sequence turn-offs, allowing a time resolution at the oldest ages of ~ 1 Gyr, which is comparable to the best achievable resolution in the MW satellites. We find that the six dSphs present a variety of SFHs that are not strictly correlated with luminosity or present distance from M31. Specifically, we find a significant range in quenching times (lookback times from 9 to 6 Gyr), but with all quenching times more than ~ 6 Gyr ago. In agreement with observations of Milky Way companions of similar mass, there is no evidence of complete quenching of star formation by the cosmic UV background responsible for reionization, but the possibility of a degree of quenching at reionization cannot be ruled out. We do not find significant differences between the SFHs of the three members of the vast, thin plane of satellites and the three off-plane dSphs. The primary difference between the SFHs of the ISLAndS dSphs and Milky Way dSph companions of similar luminosities and host distances is the absence of very late quenching (< 5 Gyr ago) dSphs in the ISLAndS sample. Thus, models that can reproduce satellite populations with and without late quenching satellites will be of extreme interest.
description: 24 pages, 11 figures, 3 tables, submitted to the ApJ
Immunofluorescent Staining of Elastin
Creators: name: Cantor, Jerome
name: Riaz, Muhammad
name: Qyang, Yibing
name: Lee, Seoyeon
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320899
subject: Medical physiology not elsewhere classified

description: Figures showing specificity of elastin immunostaining procedure.
Security of IoT Device: Perspective Forensic/Anti-Forensic Issues on Invalid Area of NAND Flash Memory
Creators: name: Ahn, Na Young
name: Lee, Dong Hoon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences
subject: 68W20

description: NAND flash memory-based IoT device can potentially still leave behind original personal data in an invalid area even if the data has been deleted. In this paper, we raise the forensic issue of original data remaining in unmanaged blocks caused by NAND flash memory and introduce methods for secure deletion of such data in the invalid area. We also propose a verification technique for secure deletion that is performed based on cell count information, which refers to the difference in bits between personal data and data stored in the block. The pass/fail of the verification technique according to the cell count information is determined in consideration of error correction capabilities. With the forensic issue of de-identification being a vital theme in the big data industry, the threat of serious privacy breaches coupled with our proposal to prevent these attacks will prove to be critical technological necessities in the future.
description: IEEE Access, early published by July 14, 2022
An elementary approach to electromagnetic momentum in matter
Creators: name: Medina, Rodrigo
name: Stephany, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We present an elementary discussion of the momentum transferred to a conducting sheet by an electromagnetic wave propagating in a polarizable medium. We show that conservation of momentum is consistent with Minkowski's expression for the momentum density.
description: 4 pages, 2 figures
Neutrino Mass, Electron Capture and the Shake-off Contributions
Creators: name: Faessler, Amand
name: Gastaldo, Loredana
name: Simkovic, Fedor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electron capture can determine the electron neutrino mass, while the beta decay of Tritium measures the electron antineutrino mass and the neutrinoless double beta decay observes the Majorana neutrino mass. Electron capture e. g. on 163Ho plus bound electron to 163Dy* plus neutrino can determine the electron neutrino mass from the upper end of the decay spectrum of the excited Dy*, which is given by the Q-Value minus the neutrino mass. The Dy* states decay by X-ray and Auger electron emissions. The total decay energy is measured in a bolometer. These excitations have been studied by Robertson and by Faessler et al.. In addition the daughter atom Dy can also be excited by moving in the capture process one electron into the continuum. The escape of these continuum electrons is automatically included in the experimental bolometer spectrum. Recently a method developed by Intemann and Pollock was used by DeRujula and Lusignoli for a rough estimate of this shake-off process for "s" wave electrons in capture on 163Ho. The purpose of the present work is to give a more reliable description of "s" wave shake-off in electron capture on Holmium. For that one needs very accurate atomic wave functions of Ho in its ground state and excited atomic wave functions of Dy* including a description of the continuum electrons. In the present approach the wave functions of Ho and Dy* are determined selfconsistently with the antisymmetrized relativistic Dirac-Hartree-Fock approach. The relativistic continuum electron wave functions for the ionized Dy* are obtained in the corresponding selfconsistent Dirac-Hartree-Fock-Potential. In this improved approach shake-off can hardly be seen after electron capture in 163Ho and thus can probably not affect the determination of the electron neutrino mass.
description: 20 pages, 9 figures
title: Aquisition, Construction and Operation of 25 Offshore Patrol Cutters to support Coast Guard Missions
titleType: AlternativeTitle
title: National Marine Fisheries Service Endangered Species Act Section 7 Biological and Conference Opinion Programmatic Biological and Conference Opinion on Construction and Operation of up to 25 New Offshore Patrol Cutters to Support Coast Guard Missions
Creators: name: United States. National Marine Fisheries Service. Office of Protected Resources
Publisher: name: United States. National Marine Fisheries Service. Office of Protected Resources
Year: 2023

description: OPR-2021-03512
Escape process in systems characterised by stable noises and position-dependent resting times
Creators: name: Srokowski, Tomasz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Stochastic systems characterised by a random driving in a form of the general stable noise are considered. The particle experiences long rests due to the traps the density of which is position-dependent and obeys a power-law form attributed to the underlying self-similar structure. Both one and two dimensional case are analysed. The random walk description involves a position-dependent waiting time distribution. On the other hand, the stochastic dynamics is formulated in terms of the subordination technique where the random time generator is position-dependent. The first passage time problem is addressed by evaluating a first passage time density distribution and an escape rate. The influence of the medium nonhomogeneity on those quantities is demonstrated; moreover, the dependence of the escape rate on the stability index and the memory parameter is evaluated. Results indicate essential differences between the Gaussian case and the case involving Levy flights.
description: 10 pages, 7 figures
title: Deer-Iron Cattle and Horse Allotment
titleType: AlternativeTitle
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson–Stevens Fishery Conservation and Management Act Essential Fish Habitat the Salmon–Challis National Forest Deer–Iron Cattle and Horse Allotment. Iron Creek-Salmon River 1706020302; Hat Creek-Salmon River 1716020301; Twelvemile-Salmon River 1716020303; and Upper Panther Creek 1716020309; Lemhi County, Idaho
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2023

description: WCRO-2023-00117
On the full dispersion Kadomtsev-Petviashvili equations for dispersive elastic waves
Creators: name: Erbay, H. A.
name: Erbay, S.
name: Erkip, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 35Q74, 74J35, 74B20

description: Full dispersive models of water waves, such as the Whitham equation and the full dispersion Kadomtsev-Petviashvili (KP) equation, are interesting from both the physical and mathematical points of view. This paper studies analogous full dispersive KP models of nonlinear elastic waves propagating in a nonlocal elastic medium. In particular we consider anti-plane shear elastic waves which are assumed to be small-amplitude long waves. We propose two different full dispersive extensions of the KP equation in the case of cubic nonlinearity and "negative dispersion". One of them is called the Whitham-type full dispersion KP equation and the other one is called the BBM-type full dispersion KP equation. Most of the existing KP-type equations in the literature are particular cases of our full dispersion KP equations. We also introduce the simplified models of the new proposed full dispersion KP equations by approximating the operators in the equations. We show that the line solitary wave solution of a simplified form of the Whitham-type full dispersion KP equation is linearly unstable to long-wavelength transverse disturbances if the propagation speed of the line solitary wave is greater than a certain value. A similar analysis for a simplified form of the BBM-type full dispersion KP equation does not provide a linear instability assessment.
description: 15 pages
Rosenbluth separation of the $π^0$ electroproduction cross section
Creators: name: Defurne, M.
name: Mazouz, M.
name: Albataineh, H.
name: Allada, K.
name: Aniol, K. A.
name: Bellini, V.
name: Benali, M.
name: Boeglin, W.
name: Bertin, P.
name: Brossard, M.
name: Camsonne, A.
name: Canan, M.
name: Chandavar, S.
name: Chen, C.
name: Chen, J. -P.
name: de Jager, C. W.
name: de Leo, R.
name: Desnault, C.
name: Deur, A.
name: Fassi, L. El
name: Ent, R.
name: Flay, D.
name: Friend, M.
name: Fuchey, E.
name: Frullani, S.
name: Garibaldi, F.
name: Gaskell, D.
name: Giusa, A.
name: Glamazdin, O.
name: Golge, S.
name: Gomez, J.
name: Hansen, O.
name: Higinbotham, D.
name: Holmstrom, T.
name: Horn, T.
name: Huang, J.
name: Huang, M.
name: Hyde, C. E.
name: Iqbal, S.
name: Itard, F.
name: Kang, H.
name: Kelleher, A.
name: Keppel, C.
name: Koirala, S.
name: Korover, I.
name: LeRose, J. J.
name: Lindgren, R.
name: Long, E.
name: Magne, M.
name: Mammei, J.
name: Margaziotis, D. J.
name: Markowitz, P.
name: Jimenez-Arguello, A. Marti
name: Meddi, F.
name: Meekins, D.
name: Michaels, R.
name: Mihovilovic, M.
name: Camacho, C. Munoz
name: Nadel-Turonski, P.
name: Nuruzzaman, N.
name: Paremuzyan, R.
name: Puckett, A.
name: Punjabi, V.
name: Qiang, Y.
name: Rakhman, A.
name: Rashad, M. N. H.
name: Riordan, S.
name: Roche, J.
name: Russo, G.
name: Sabati, F.
name: Saenboonruang, K.
name: Saha, A.
name: Sawatzky, B.
name: Selvy, L.
name: Shahinyan, A.
name: Sirca, S.
name: Solvignon, P.
name: Sperduto, M. L.
name: Subedi, R.
name: Sulkosky, V.
name: Sutera, C.
name: Tobias, W. A.
name: Urciuoli, G. M.
name: Wang, D.
name: Wojtsekhowski, B.
name: Yao, H.
name: Ye, Z.
name: Zafar, A.
name: Zhan, X.
name: Zhang, J.
name: Zhao, B.
name: Zhao, Z.
name: Zheng, X.
name: Zhu, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present deeply virtual $π^0$ electroproduction cross-section measurements at $x_B$=0.36 and three different $Q^2$--values ranging from 1.5 to 2 GeV$^2$, obtained from experiment E07-007 that ran in the Hall A at Jefferson Lab. The Rosenbluth technique was used to separate the longitudinal and transverse responses. Results demonstrate that the cross section is dominated by its transverse component, and thus is far from the asymptotic limit predicted by perturbative Quantum Chromodynamics. An indication of a non-zero longitudinal contribution is provided by the interference term $σ_{LT}$ also measured. Results are compared with several models based on the leading twist approach of Generalized Parton Distributions (GPDs). In particular, a fair agreement is obtained with models where the scattering amplitude is described by a convolution of chiral-odd (transversity) GPDs of the nucleon with the twist-3 pion distribution amplitude. Therefore, neutral pion electroproduction may offer the exciting possibility of accessing transversity GPDs through experiment.
description: Submitted to Physical Review Letters
ExoMol molecular line lists - XVII The rotation-vibration spectrum of hot SO$_3$
Creators: name: Underwood, Daniel S.
name: Yurchenko, Sergei N.
name: Tennyson, Jonathan
name: Al-Refaie, Ahmed F.
name: Clausen, Sønnik
name: Fateev, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Sulphur trioxide (SO$_3$) is a trace species in the atmospheres of the Earth and Venus, as well as well as being an industrial product and an environmental pollutant. A variational line list for $^{32}$S$^{16}$O$_{3}$, named UYT2, is presented containing 21 billion vibration-rotation transitions. UYT2 can be used to model infrared spectra of SO$_3$ at wavelengths longwards of 2 $μ$m ($ν< 5000$ cm$^{-1}$) for temperatures up to 800 K. Infrared absorption cross sections are also recorded at 300 and 500 C are used to validate the UYT2 line list. The intensities in UYT2 are scaled to match the measured cross sections. The line list is made available in electronic form as supplementary data to this article and at \url{www.exomol.com}.
description: 15 pages, 10 figures, 9 tables MNRAS submitted
Chaotic lensing around boson stars and Kerr black holes with scalar hair
Creators: name: Cunha, P. V. P.
name: Grover, J.
name: Herdeiro, C.
name: Radu, E.
name: Runarsson, H.
name: Wittig, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a recent letter, arXiv:1509.00021, it was shown that the lensing of light around rotating boson stars and Kerr black holes with scalar hair can exhibit chaotic patterns. Since no separation of variables is known (or expected) for geodesic motion on these backgrounds, we examine the 2D effective potentials for photon trajectories, to obtain a deeper understanding of this phenomenon. We find that the emergence of stable light rings on the background spacetimes, allows the formation of "pockets" in one of the effective potentials, for open sets of impact parameters, leading to an effective trapping of some trajectories, dubbed quasi-bound orbits. We conclude that pocket formation induces chaotic scattering, although not all chaotic orbits are associated to pockets. These and other features are illustrated in a gallery of examples, obtained with a new ray-tracing code, PYHOLE, which includes tools for a simple, simultaneous visualization of the effective potential together with the spacetime trajectory, for any given point in a lensing image. An analysis of photon orbits allows us to further establish a positive correlation between photon orbits in chaotic regions and those with more than one turning point in the radial direction; we recall that the latter is not possible around Kerr black holes. Moreover, we observe that the existence of several light rings around a horizon (several fundamental orbits, including a stable one), is a central ingredient for the existence of multiple shadows of a single hairy black hole. We also exhibit the lensing and shadows by Kerr black holes with scalar hair, observed away from the equatorial plane, obtained with PYHOLE.
description: 43 pages, 22 figures
Thesis on Identifying International Business Strategies of PRAN-RFL Group in India
Creators: name: AMRAN MOJUMDER FAHAD
Publisher: name: Zenodo
Year: 2023
Subjects: PRAN-RFL Group, International Business

description: PRAN-RFL group has been operating in Bangladesh as one of the most profitable companies for many years, and it has been a pioneer in the agro-processed industry because, during that time, there were few companies that were catering to this industry. Their motto is to generate employment and acquire dignity and self-respect for Bangladeshi competitors. Its mission and vision are to eliminate poverty and develop the agricultural sector in Bangladesh. PRAN-RFL group is also one of the most successful companies in Bangladesh in penetrating the global market successfully. PRAN is operating its business in the dynamic global market where PRAN products are regularly being exported and have had some great success. PRAN products are exported to around 145 countries with the aim of joining the global business and creating a strong entity for Bangladesh on the world’s economic map. The Indian market is one of the largest markets for the export of PRAN products, and PRAN has created a strong entity in the Indian market for several years. This report focuses on PRAN’s international business and PRAN’s international strategies to become the country’s largest exporter to the Indian market. Also, several issues are highlighted in this report regarding how PRAN operates in dynamic markets like India. A detailed analysis of the group is done to give a clear picture of where PRAN stands and how it can overcome its weaknesses by combining its strengths and opportunities.
Photophoresis on particles hotter/colder than the ambient gas for the entire range of pressures
Creators: name: Loesche, Christoph
name: Husmann, Tim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Small, illuminated aerosol particles embedded in a gas experience a photophoretic force. Most approximations assume the mean particle surface temperature to be effectively the gas temperature. This might not always be the case. If the particle temperature or the thermal radiation field strongly differs from the gas temperature (optically thin gases), given approximations for the free molecule regime overestimate the photophoretic force by an order of magnitude on average and for individual configurations up to three magnitudes. We apply the radiative equilibrium condition from the previous paper (Paper 1) -- where photophoresis in the free molecular flow regime was treated -- to the slip flow regime. The slip-flow model accounts for thermal creep, frictional and thermal stress gas slippage and temperature jump at the gas-particle interface. In the limiting case for vanishing Knudsen numbers -- the continuum limit -- our derived formula has a mean error of only 4 \% compared to numerical values. Eventually, we propose an equation for photophoretic forces for all Knudsen numbers following the basic idea from Rohatschek by interpolating between the free molecular flow and the continuum limit.
A Hybrid Approach to Word Sense Disambiguation Combining Supervised and Unsupervised Learning
Creators: name: Pal, Alok Ranjan
name: Kundu, Anirban
name: Singh, Abhay
name: Shekhar, Raj
name: Sinha, Kunal
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this paper, we are going to find meaning of words based on distinct situations. Word Sense Disambiguation is used to find meaning of words based on live contexts using supervised and unsupervised approaches. Unsupervised approaches use online dictionary for learning, and supervised approaches use manual learning sets. Hand tagged data are populated which might not be effective and sufficient for learning procedure. This limitation of information is main flaw of the supervised approach. Our proposed approach focuses to overcome the limitation using learning set which is enriched in dynamic way maintaining new data. Trivial filtering method is utilized to achieve appropriate training data. We introduce a mixed methodology having Modified Lesk approach and Bag-of-Words having enriched bags using learning methods. Our approach establishes the superiority over individual Modified Lesk and Bag-of-Words approaches based on experimentation.
description: 13 pages in International Journal of Artificial Intelligence & Applications (IJAIA), Vol. 4, No. 4, July 2013
Peter Bergmann on Observables in Hamiltonian General Relativity: A Historical-Critical Investigation
Creators: name: Pitts, J. Brian
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The problem of observables and their supposed lack of change has been significant in Hamiltonian quantum gravity since the 1950s. This paper considers the unrecognized variety of ideas about observables in the thought of Peter Bergmann, who invented observables. Whereas initially he required a constrained Hamiltonian formalism to be mathematically equivalent to the Lagrangian, in 1953 Bergmann and Schiller introduced a novel postulate, motivated by facilitating quantum gravity: observables were _invariant_ under transformations generated by _each individual_ first-class constraint. While modern works rely on Bergmann's authority and sometimes speak of "Bergmann observables," he had much to say about observables, plausible but not all consistent or remembered. At times he required observables to be locally defined (not changeless and global); at times he wanted them independent of the Hamiltonian formalism (not essentially involving separate first-class constraints). But typically he took observables to have vanishing Poisson bracket with each first-class constraint, purportedly justified by electrodynamics. He expected observables to be analogous to the transverse true degrees of freedom of electromagnetism. Hence there is no coherent concept of observables which he reliably endorsed. A revised definition of observables that satisfies the requirement that equivalent theories should have equivalent observables using the Rosenfeld-Anderson-Bergmann-Castellani gauge generator $G$, a tuned sum of first-class constraints that changes the canonical action $\int dt(p\dot{q}-H)$ by a boundary term. Bootstrapping from theory formulations with no first-class constraints, the "external" coordinate symmetry of GR calls for covariance ($4$-dimensional Lie derivative), not invariance ($0$ Poisson bracket), under $G$ (not each first-class constraint).
Dynamics of active liquid interfaces
Creators: name: Adkins, Raymond
name: Kolvin, Itamar
name: You, Zhihong
name: Witthaus, Sven
name: Marchetti, M. Cristina
name: Dogic, Zvonimir
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Controlling interfaces of phase separating fluid mixtures is key to creating diverse functional soft materials. Traditionally, this is accomplished with surface-modifying chemical agents. Using experiment and theory, we study how mechanical activity shapes soft interfaces that separate an active and a passive fluid. Chaotic flows in the active fluid give rise to giant interfacial fluctuations and non-inertial propagating active waves. At high activities, stresses disrupt interface continuity and drive droplet generation, producing an emulsion-like active state comprised of finite-sized droplets. When in contact with a solid boundary, active interfaces exhibit non-equilibrium wetting transitions, wherein the fluid climbs the wall against gravity. These results demonstrate the promise of mechanically driven interfaces for creating a new class of soft active matter.
description: 62 pages, 5 figures, 13 supplementary figures
title: Outfall Replacement (NWS-2022-32; City of Sultan)
titleType: AlternativeTitle
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the City of Sultan’s Wastewater Treatment Plant Outfall Replacement Project, Snohomish County, Washington (USACE No. NWS-2022-32; HUC: 171100090603 – McCoy Creek-Skykomish River)
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2023

description: WCRO-2022-01769