cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identification of molecular clouds in emission maps: a comparison between methods in the \ce{^{13}CO}/\ce{C^{18}O} ($J=3-2$) Heterodyne Inner Milky Way Plane Survey
Creators: name: Rani, Raffaele
name: Moore, Toby J. T.
name: Eden, David J.
name: Rigby, Andrew J.
name: Duarte-Cabral, Ana
name: Lee, Yueh-Ning
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The growing range of automated algorithms for the identification of molecular clouds and clumps in large observational datasets has prompted the need for the direct comparison of these procedures. However, these methods are complex and testing for biases is often problematic: only a few of them have been applied to the same data set or calibrated against a common standard. We compare the Fellwalker method, a widely used watershed algorithm, to the more recent Spectral Clustering for Interstellar Molecular Emission Segmentation (SCIMES). SCIMES overcomes sensitivity and resolution biases that plague many friends-of-friends algorithms by recasting cloud segmentation as a clustering problem. Considering the \ce{^{13}CO}/\ce{C^{18}O} ($J = 3 - 2$) Heterodyne Inner Milky Way Plane Survey (CHIMPS) and the CO High-Resolution Survey (COHRS), we investigate how these two different approaches influence the final cloud decomposition. Although the two methods produce largely similar statistical results over the CHIMPS dataset, FW appears prone to over-segmentation, especially in crowded fields where gas envelopes around dense cores are identified as adjacent, distinct objects. FW catalogue also includes a number of fragmented clouds that appear as different objects in a line-of-sight projection. In addition, cross-correlating the physical properties of individual sources between catalogues is complicated by different definitions, numerical implementations, and design choices within each method, which make it very difficult to establish a one-to-one correspondence between the sources.
description: accepted MNRAS
Deep Learning-Based Adrenal Gland Volumetry for the Prediction of Diabetes Mellitus: An Observational Study - Supplementary Materials
Creators: name: Ku, Eu Jeong
name: Yoon, Soon Ho
name: Park, Seung Shin
name: Yoon, Ji Won
name: Kim, Jung Hee
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320208
subject: Endocrinology

description: Supplementary Table 1. CT protocols in data for model development and clinical cohortSupplementary Table 2. Performance of the deep learning model for adrenal gland segmentationSupplementary Table 3. Baseline characteristics of the study population (n = 9,708)Supplementary Table 4. Adrenal gland volume (AGV) according to the glycemic status at baselineSupplementary Table 5. Baseline characteristics of subjects without T2D at baseline, stratified by follow-up statusSupplementary Figure 1. Study flowchart. CT, computed tomography; DM, diabetes; SNUH, Seoul National University Hospital.Supplementary Figure 2. Architecture of the deep learning model for adrenal gland segmentationSupplementary Figure 3. Receiver operating characteristics (ROC) curve analysis for predicting type 2 diabetes using AGV. The area under the ROC (AUC) for type 2 diabetes prediction using cut-off values (7.2 cm3 for men and 5.5 cm3 for women) was 0.60 for men and 0.68 for women.
Ring-shaped velocity distribution functions in energy-dispersed structures formed at the boundaries of a proton stream injected into a transverse magnetic field: Test-kinetic results
Creators: name: Voitcu, Gabriel
name: Echim, Marius
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper, we discuss the formation of ring-shaped and gyro-phase restricted velocity distribution functions (VDFs) at the edges of a cloud of protons injected into non-uniform distributions of the electromagnetic field. The velocity distribution function is reconstructed using the forward test-kinetic method. We consider two profiles of the electric field: (1) a non-uniform E-field obtained by solving the Laplace equation consistent with the conservation of the electric drift and (2) a constant and uniform E-field. In both cases, the magnetic field is similar to the solutions obtained for tangential discontinuities. The initial velocity distribution function is Liouville mapped along numerically integrated trajectories. The numerical results show the formation of an energy-dispersed structure due to the energy-dependent displacement of protons towards the edges of the cloud by the gradient-B drift. Another direct effect of the gradient-B drift is the formation of ring-shaped velocity distribution functions within the velocity-dispersed structure. Higher energy particles populate the edges of the proton beam, while smaller energies are located in the core. Non-gyrotropic velocity distribution functions form on the front-side and trailing edge of the cloud; this effect is due to remote sensing of energetic particles with guiding centers inside the beam. The kinetic features revealed by the test-kinetic solutions have features similar to in-situ velocity distribution functions observed by Cluster satellites in the magnetotail, close to the neutral sheet.
Experimental test of photonic entanglement in accelerated reference frames
Creators: name: Fink, Matthias
name: Rodriguez-Aramendia, Ana
name: Handsteiner, Johannes
name: Ziarkash, Abdul
name: Steinlechner, Fabian
name: Scheidl, Thomas
name: Fuentes, Ivette
name: Pienaar, Jacques
name: Ralph, Tim C.
name: Ursin, Rupert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantization of the electromagnetic field has successfully paved the way for the development of the Standard Model of Particle Physics and has established the basis for quantum technologies. Gravity, however, continues to hold out against physicists' efforts of including it into the framework of quantum theory. Experimental techniques in quantum optics have only recently reached the precision and maturity required for the investigation of quantum systems under the influence of gravitational fields. Here, we report on experiments in which a genuine quantum state of an entangled photon pair was exposed to a series of different accelerations. We measure an entanglement witness for $g$ values ranging from 30 mg to up to 30 g - under free-fall as well on a spinning centrifuge - and have thus derived an upper bound on the effects of uniform acceleration on photonic entanglement. Our work represents the first quantum optics experiment in which entanglement is systematically tested in geodesic motion as well as in accelerated reference frames with acceleration a>>g = 9.81 m/s^2.
description: 7 pages, 5 figures
Tumor-activated lymph node fibroblasts suppress T cell function in diffuse large B cell lymphoma.
Creators: name: Apollonio, Benedetta
name: Spada, Filomena
name: Petrov, Nedyalko
name: Cozzetto, Domenico
name: Papazoglou, Despoina
name: Jarvis, Peter
name: Kannambath, Shichina
name: Terranova-Barberio, Manuela
name: Amini, Rose-Marie
name: Enblad, Gunilla
name: Graham, Charlotte
name: Benjamin, Reuben
name: Phillips, Elisabeth
name: Ellis, Richard
name: Nuamah, Rosamond
name: Saqi, Mansoor
name: Calado, Dinis P
name: Rosenquist, Richard
name: Sutton, Lesley A
name: Salisbury, Jon
name: Zacharioudakis, Georgios
name: Vardi, Anna
name: Hagner, Patrick R
name: Gandhi, Anita K
name: Bacac, Marina
name: Claus, Christina
name: Umana, Pablo
name: Jarrett, Ruth F
name: Klein, Christian
name: Deutsch, Alexander
name: Ramsay, Alan G
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: subject: Model organisms
subject: Tumour Biology
subject: Signalling & Oncogenes
subject: Genetics & Genomics
subject: Developmental Biology
subject: Stem Cells
subject: Chemical Biology & High Throughput
subject: Immunology
subject: FOS: Clinical medicine

description: Recent transcriptomic-based analysis of diffuse large B cell lymphoma (DLBCL) has highlighted the clinical relevance of lymph node (LN) fibroblast and tumor-infiltrating lymphocyte (TIL) signatures within the tumor microenvironment (TME). However, the immunomodulatory role of fibroblasts in lymphoma remains unclear. Here, by studying human and mouse DLBCL-LNs, we identify the presence of an aberrantly remodeled fibroblastic reticular cell (FRC) network, expressing elevated fibroblast activated protein (FAP). RNA-sequencing analyses reveal that exposure to DLBCL reprograms key immunoregulatory pathways in FRCs, including a switch from homeostatic to inflammatory chemokine expression and elevated antigen presentation molecules. Functional assays show that DLBCL-activated FRCs (DLBCL-FRCs) hinder optimal TIL and chimeric antigen receptor T cell (CAR-T) migration. Moreover, DLBCL-FRCs inhibited CD8+ TIL cytotoxicity in an antigen-specific manner. Notably, the interrogation of patient LNs with imaging mass cytometry identified distinct environments differing in their CD8+ TIL-FRC composition and spatial organization that associated with survival outcomes. We further demonstrate the potential to target inhibitory FRCs to rejuvenate interacting TILs. Co-treating organotypic cultures with FAP-targeted immunostimulatory drugs and a bispecific antibody (glofitamab) augmented anti-lymphoma TIL cytotoxicity. Together, our study reveals an immunosuppressive role of FRCs in DLBCL, with implications for immune evasion, disease pathogenesis and optimizing immunotherapy for patients.
Constrained N-body problems
Creators: name: Szumiński, Wojciech
name: Przybylska, Maria
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider a problem of mass points interacting gravitationally whose motion is subjected to certain holonomic constraints. The motion of points is restricted to certain curves and surfaces. We illustrate the complicated behaviour of trajectories of these systems using Poincaré cross sections. For some models we prove the non-integrability analysing properties of the differential Galois group of variational equations along certain particular solutions of considered systems. Also some integrable cases are identified.
description: Applied Non-Linear Dynamical Systems, ed. Jan Awrejcewicz, Proceedings in Mathematics, 2014
In The Wild Residual Data Research and Privacy
Creators: name: Glisson, William Bradley
name: Storer, Tim
name: Blyth, Andrew
name: Grispos, George
name: Campbell, Matt
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: As the world becomes increasingly dependent on technology, researchers in both industry and academia endeavor to understand how technology is used, the impact it has on everyday life, the artifact life-cycle and overall integrations of digital information. In doing so, researchers are increasingly gathering 'real-world' or 'in-the-wild' residual data, obtained from a variety of sources, without the explicit consent of the original owners. This data gathering raises significant concerns regarding privacy, ethics and legislation, as well as practical considerations concerning investigator training, data storage, overall security and data disposal. This research surveys recent studies of residual data gathered in-the-wild and analyzes the challenges that were confronted. Amalgamating these insights, the research presents a compendium of practices for addressing the issues that can arise in-the-wild when conducting residual data research. The practices identified in this research can be used to critique current projects and assess the feasibility of proposed future research.
description: Residual Data, In-the-wild, Digital Forensics, Privacy
Modelling supernova nebular lines in 3D with $\texttt{ExTraSS}$
Creators: name: van Baal, Bart
name: Jerkstrand, Anders
name: Wongwathanarat, Annop
name: Janka, Thomas H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present $\texttt{ExTraSS}$ (EXplosive TRAnsient Spectral Simulator), a newly developed code aimed at generating 3D spectra for supernovae in the nebular phase by using modern multi-dimensional explosion models as input. It is well established that supernovae are asymmetric by nature, and that the morphology is encoded in the line profiles during the nebular phase, months after the explosion. In this work, we use $\texttt{ExTraSS}$ to study one such simulation of a $3.3\,M_\odot$ He-core explosion ($M_\text{ejecta}=1.3\,M_\odot$, $E_\text{kin}=1.05\times10^{51}\,$erg) modelled with the $\texttt{Prometheus-HotB}$ code and evolved to the homologous phase. Our code calculates the energy deposition from the radioactive decay of $^{56}$Ni $\rightarrow$ $^{56}$Co $\rightarrow$ $^{56}$Fe and uses this to determine the Non-Local-Thermodynamic-Equilibrium temperature, excitation and ionization structure across the nebula. From the physical condition solutions we generate the emissivities to construct spectra depending on viewing angles. Our results show large variations in the line profiles with viewing angles, as diagnosed by the first three moments of the line profiles; shifts, widths, and skewness. We compare line profiles from different elements, and study the morphology of line-of-sight slices that determine the flux at each part of a line profile. We find that excitation conditions can sometimes make the momentum vector of the ejecta emitting in the excited states significantly different from that of the bulk of the ejecta of the respective element, thus giving blueshifted lines for bulk receding material, and vice versa. We compare the 3.3 $M_\odot$ He-core model to observations of the Type Ib supernova SN 2007Y.
description: 20 pages, 15 Figures 2 Tables. Accepted for publication in MNRAS
From orthosymplectic structure to super topological matter
Creators: name: Drissi, L. B
name: Saidi, E. H
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological supermatter is given by ordinary topological matter constrained by supersymmetry or graded supergroups such as OSP(2N|2N). Using results on super oscillators and lattice QFT$_{d}$, we construct a super tight binding model on hypercubic super lattice with supercharge $ \boldsymbol{Q}=\sum_{\mathbf{k}}\hat{F}_{\mathbf{k}}.\boldsymbol{q}_{\mathbf{k}}.\hat{B}_{\mathbf{k}}$. We first show that the algebraic triplet $(Ω,G,J)$ of super oscillators can be derived from the $OSp(2N|2N)$ supergroup containing the symplectic $Sp(2N)$ and the orthogonal $SO(2N)$ as even subgroups. Then, we apply the obtained result on super oscillating matter to super bands and investigate its topological obstructions protected by TPC symmetries. We also give a classification of the Bose/Fermi coupling matrix $\boldsymbol{q}_{\mathbf{k}}$ in terms of subgroups of $OSp(2N|2N)$\ and show that there are $2P_{N}$ (partition of $N$) classes $\boldsymbol{q}_{\mathbf{k}}$ given by unitary subgroups of $U\left( 2\right) \times U\left( N\right) $. Other features are also given.
description: LaTeX, 74 pages, 7 figures
Building resilient wooded landscapes: How can we support saproxylic invertebrates into the future?
Creators: name: Skipp, Stephanie Katherine
Publisher: name: University of East London
Year: 2023

description: Decaying wood hosts a diverse network of saproxylic invertebrates. These play important roles in forest functioning, including pest control, pollination, and nutrient cycling. However, declines in ancient and veteran trees in UK landscapes threaten saproxylic communities. The present research sought to address this through investigating multiple aspects of saproxylic habitat use and creation. Previous studies of saproxylic invertebrate landscape use have identified scales at which habitat density is most important. However, many of these studies were done in dense woodlands and none have been attempted in the UK. This research sought to fill these knowledge gaps by investigating habitat density scales of importance to invertebrate populations in English open-grown oak landscapes. Flight interception trapping data showed that higher veteran tree densities over a 250 m radius positively correlated with saproxylic community diversity, whilst higher densities over smaller scales support rare species. The second aspect of this research explored beetle boxes as a deadwood habitat creation method. The present research built upon previous studies by investigating a novel ground-level design to replicate basal tree hollows. It also tested the potential of different construction materials and content variations in improving beetle box function. Results showed that plastic beetle boxes contained similar abundances and diversities of deadwood-associated beetles than those made of wood. However, the wood mould in plastic boxes became significantly drier than that in wooden boxes. The addition of poultry faeces to beetle boxes as a source of nitrogen was associated with higher abundances and diversities of some beetle groups. No evidence of the basal hollow specialist, Limoniscus violaceus, was found in beetle boxes; however, more long-term monitoring is needed to thoroughly investigate this. This research also noted the potential for beetle boxes to function as a public engagement tool to promote a widespread appreciation of the importance of deadwood ecosystems.
Identifying Disappearance of a White Dwarf Binary with LISA
Creators: name: Seto, Naoki
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the prospect of identifying a white dwarf binary merger by monitoring disappearance of its nearly monochromatic gravitational wave. For a ten-year operation of the laser interferometer space antenna (LISA), the chance probability of observing such an event is roughly estimated to be 20%. By simply using short-term coherent signal integrations, we might determine the merger time with an accuracy of $\sim $3-10 days. Also considering its expected sky localizability $\sim0.1$-$ 0.01 {\rm deg^2}$, LISA might make an interesting contribution to the multi-messenger study on a merger event.
description: 6 pages, 1 figure
Thinking Critically about Artificial Intelligence and Education
Creators: name: Ación, Laura
name: Benotti, Luciana
name: Ascenzi, Laura
name: Black, Melissa
name: Lefer, Paola Andrea
Publisher: name: Zenodo
Year: 2023
Subjects: Inteligencia artificial
ChatGPT
docencia
pedagogía
enseñanza
Latin America
Teaching
education
Artificial Intelligence

description: In this blog post, we share some critical thoughts and ideas about the potential uses of AI in Education.
Mechanical Novel: Crowdsourcing Complex Work through Reflection and Revision
Creators: name: Kim, Joy
name: Sterman, Sarah
name: Cohen, Allegra Argent Beal
name: Bernstein, Michael S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.3

description: Crowdsourcing systems accomplish large tasks with scale and speed by breaking work down into independent parts. However, many types of complex creative work, such as fiction writing, have remained out of reach for crowds because work is tightly interdependent: changing one part of a story may trigger changes to the overall plot and vice versa. Taking inspiration from how expert authors write, we propose a technique for achieving interdependent complex goals with crowds. With this technique, the crowd loops between reflection, to select a high-level goal, and revision, to decompose that goal into low-level, actionable tasks. We embody this approach in Mechanical Novel, a system that crowdsources short fiction stories on Amazon Mechanical Turk. In a field experiment, Mechanical Novel resulted in higher-quality stories than an iterative crowdsourcing workflow. Our findings suggest that orienting crowd work around high-level goals may enable workers to coordinate their effort to accomplish complex work.
A twisted and precessing Cepheid warp in the outer Milky Way disc
Creators: name: Dehnen, Walter
name: Semczuk, Marcin
name: Schönrich, Ralph
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine the Galactic warp in a sample of all classical Cepheids with Gaia DR3 radial velocity. In each radial bin, we determine (1) the inclined plane normal to the mean orbital angular momentum of the stars and (2) that best fitting their positions. We find no warping inside $R\approx 11$ kpc; for larger $R$ the disc is increasingly inclined, reaching $i\sim 3^{\circ}$ at $R \ge 14$ kpc. With larger $R$ the azimuth of the warp's ascending node shifts from $φ_{\mathrm{lon}}\approx-15^\circ$ at 11 kpc by about $14^{\circ}$/kpc in the direction of Galactic rotation, implying a leading spiral of nodes, the general behaviour of warped galaxies. From the method of fitting planes to the positions we also obtain $\dotφ_{\mathrm{lon}}$ and find prograde precession of $\dotφ_{\mathrm{lon}} \sim 12$ km/s/kpc at 12 kpc decreasing to $\sim 6$ km/s/kpc at 14 kpc and beyond. This would unwind the leading spiral of nodes in $\sim 100$ Myr, suggesting that our instantaneous measurements of $\dotφ_{\mathrm{lon}}$ reflect transient behaviour. This is consistent with existing simulations, which show oscillations in $\dotφ_{\mathrm{lon}}$ overlaying a long-term retrograde differential precession which generates the leading spiral of nodes.
description: 9 pages, accepted for publication in MNRAS
Survey of finiteness results for hyperkähler manifolds
Creators: name: Kamenova, Ljudmila
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53C26, 14E05, 32H35

description: This paper is a survey of finiteness results in hyperkähler geometry. We review some classical theorems by Sullivan, Kollár-Matsusaka, Huybrechts, as well as theorems in the recent literature by Charles, Sawon, and joint results of the author with Verbitsky. We also strengthen a finiteness theorem of the author. These are extended notes of the author's talk during the closing conference of the Simons Semester in the Banach Center in Bȩdlewo, Poland.
description: 12 pages. arXiv admin note: text overlap with arXiv:1509.01897
Fullerenes in the circumstellar medium of Herbig Ae/Be stars: Insights from the Spitzer mid-infrared spectral catalog
Creators: name: Arun, R.
name: Mathew, Blesson
name: Manoj, P.
name: Maheswar, G.
name: Shridharan, B.
name: Kartha, Sreeja S.
name: Narang, Mayank
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This study presents the largest mid-infrared spectral catalog of Herbig Ae/Be stars to date, containing the Spitzer Infrared Spectrograph spectra of 126 stars. Based on the catalog analysis, two prominent infrared vibrational modes of C\textsubscript{60} bands at 17.4 $μm$ and 18.9 $μm$ are detected in the spectra of nine sources, while 7.0 $μm$ feature is identified in the spectra of HD 319896. The spectral index analysis and the comparison of the known sources with C\textsubscript{60} features indicated that there exist two different types of emission classes among the sample of stars. The infrared spectra of six Herbig Ae/Be stars in this study resemble that of reflection nebulae, and their association with previously known reflection nebulae is confirmed. In the case of three Herbig Ae/Be stars we report the tentative evidence of C\textsubscript{60} emission features originating from the circumstellar disk or nearby diffused emission region. The detection fraction of C\textsubscript{60} in the total HAeBe star sample is $\sim$ 7\%, whereas the detection fraction is 30\% for HAeBe stars associated with nebulosity. In the catalog, C\textsubscript{60} is exclusively present in the circumstellar regions of B type Herbig Ae/Be stars, with no evidence of its presence detected in stars with later spectral types. The present study has increased the number of young stellar objects and reflection nebulae detected with C\textsubscript{60} multifold, which can help in understanding the excitation and formation pathway of the species.
description: 14 pages,2 tables, 6 figures, accepted for publication in MNRAS
Evidence for marginal stability in emulsions
Creators: name: Lin, Jie
name: Jorjadze, Ivane
name: Pontani, Lea-Laetitia
name: Wyart, Matthieu
name: Brujic, Jasna
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report the first measurements of the effect of pressure on vibrational modes in emulsions, which serve as a model for soft frictionless spheres at zero temperature. As a function of the applied pressure, we find that the density of states D(omega) exhibits a low-frequency cutoff omega*, which scales linearly with the number of extra contacts per particle dz. Moreover, for omega
Critical Casimir forces from the equation of state of quantum critical systems
Creators: name: Rancon, Adam
name: Henry, Louis-Paul
name: Rose, Félix
name: Cardozo, David Lopes
name: Dupuis, Nicolas
name: Holdsworth, Peter C. W.
name: Roscilde, Tommaso
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The mapping between a classical length and inverse temperature as imaginary time provides a direct equivalence between the Casimir force of a classical system in $D$ dimensions and internal energy of a quantum system in $d$$=$$D$$-$$1$ dimensions. The scaling functions of the critical Casimir force of the classical system with periodic boundaries thus emerge from the analysis of the symmetry related quantum critical point. We show that both non-perturbative renormalization group and quantum Monte Carlo analysis of quantum critical points provide quantitative estimates for the critical Casimir force in the corresponding classical model, giving access to widely different aspect ratios for the geometry of confined systems. In the light of these results we propose protocols for the experimental realization of critical Casimir forces for periodic boundaries through state-of-the-art cold-atom and solid-state experiments.
description: 5+2 pages, 3 figures
Comparative study of forward and backward test-kinetic simulation approaches
Creators: name: Voitcu, Gabriel
name: Echim, Marius
name: Marchand, Richard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper we perform a comparative study of the forward and backward Liouville mapping applied to the modeling of ring-shaped and non-gyrotropic velocity distribution functions of particles injected in a sheared electromagnetic field. The test-kinetic method is used to compute the velocity distribution function in various areas of a proton cloud moving in the vicinity of a region with a sharp transition of the magnetic field and a non-uniform electric field. In the forward approach the velocity distribution function is computed for a two-dimensional spatial bin, while in the backward approach the distribution function is averaged over a spatial bin with the same size as for the forward method and using a two-dimensional trapezoidal integration scheme. It is shown that the two approaches lead to similar results for spatial bins where the velocity distribution function varies smoothly. On the other hand, with bins covering regions of configuration space characterized by sharp spatial gradients of the velocity distribution function, the forward and backward approaches will generally provide different results.
The Three Hundred Project: the evolution of physical baryon profiles
Creators: name: Li, Qingyang
name: Cui, Weiguang
name: Yang, Xiaohu
name: Dave, Romeel
name: Rasia, Elena
name: Borgani, Stefano
name: Massimo, Meneghetti
name: Knebe, Alexander
name: Dolag, Klaus
name: Sayers, Jack
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The distribution of baryons provides a significant way to understand the formation of galaxy clusters by revealing the details of its internal structure and changes over time. In this paper, we present theoretical studies on the scaled profiles of physical properties associated with the baryonic components, including gas density, temperature, metallicity, pressure and entropy as well as stellar mass, metallicity and satellite galaxy number density in galaxy clusters from $z=4$ to $z=0$ by tracking their progenitors. These mass-complete simulated galaxy clusters are coming from THE THREE HUNDRED with two runs: GIZMO-SIMBA and Gadget-X. Through comparisons between the two simulations, and with observed profiles which are generally available at low redshift, we find that (1) the agreements between the two runs and observations are mostly at outer radii $r \gtrsim 0.3r_{500}$, in line with the self-similarity assumption. While Gadget-X shows better agreements with the observed gas profiles in the central regions compared to GIZMO-SIMBA; (2) the evolution trends are generally consistent between the two simulations with slightly better consistency at outer radii. In detail, the gas density profile shows less discrepancy than the temperature and entropy profiles at high redshift. The differences in the cluster centre and gas properties imply different behaviours of the AGN models between Gadget-X and GIZMO-SIMBA, with the latter, maybe too strong for this cluster simulation. The high-redshift difference may be caused by the star formation and feedback models or hydrodynamics treatment, which requires observation constraints and understanding.
description: 20 pages, 20 figures, accepted in MNRAS
Nonlinear Jaynes-Cummings model for two interacting two-level atoms
Creators: name: Santos-Sánchez, O. de los
name: González-Gutiérrez, C.
name: Récamier, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we examine a nonlinear version of the Jaynes-Cummings model for two identical two-level atoms allowing for Ising-like and dipole-dipole interplays between them. The model is said to be nonlinear in the sense that it can incorporate both a general intensity-dependent interaction between the atomic system and the cavity field and/or the presence of a nonlinear medium inside the cavity. As an example, we consider a particular type of atom-field coupling based upon the so-called Buck-Sukumar model and a lossless Kerr-like cavity. We describe the possible effects of such features on the evolution of some quantities of current interest, such as atomic excitation, purity, concurrence, the entropy of the field and the evolution of the latter in phase space.
description: 28 pages, 11 figures, accepted for publication in Journal of Physics B
$E=mc^2$ versus Symmetry for Lorentz Covariant Physics
Creators: name: Kong, Otto C. W.
name: Ting, Hock King
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The famous equation $E=mc^2$ is a version of particle mass being essentially the magnitude of the (energy-)momentum four-vector in the setting of `relativistic' dynamics, which can be seen as dictated by the Poincaré symmetry adopted as the relativity symmetry. However, as Einstein himself suggested, the naive notion of momentum as mass times velocity may not be right. The Hamiltonian formulation perspective gives exactly such a setting which in the case of motion of a charged particle under an electromagnetic field actually has the right, canonical, momentum four-vector with an evolving magnitude. The important simple result seems to have missed proper appreciation. In relation to that, we present clear arguments against taking the Poincaré symmetry as the fundamental symmetry behind `relativistic' quantum dynamics, and discuss the proper symmetry theoretical formulation and the necessary picture of the covariant Hamiltonian dynamics with an evolution parameter that is, in general, not a particle proper time. In fact, it is obvious that the action of any position operator of a quantum state violates the on-shell mass condition. The phenomenologically quite successful quantum field theories are `second quantized' versions of `relativistic' quantum mechanics. We present a way for some reconciliation of that with our symmetry picture and discuss implications.
description: 22 pages Revtex, no figure, published version
Alive and kicking: A new QPE phase in GSN 069 revealing a quiescent luminosity threshold for QPEs
Creators: name: Miniutti, G.
name: Giustini, M.
name: Arcodia, R.
name: Saxton, R. D.
name: Chakraborty, J.
name: Read, A. M.
name: Kara, E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: X-ray quasi-periodic eruptions (QPEs) are intense repeating soft X-ray bursts from the nuclei of nearby galaxies. Their physical origin is still largely unconstrained, and several theoretical models have been proposed to date. We present here results from a recent XMM-Newton observation of GSN 069, the galactic nucleus where QPEs were first discovered. After about two years of absence, QPEs have reappeared in GSN 069, and we detect two consecutive QPEs separated by a much shorter recurrence time than ever before. Moreover, their intensities and peak temperatures are remarkably different, a novel addition to the QPE phenomenology. We study the QPE spectral properties from all XMM-Newton observations assuming QPEs to either represent an additional emission component superimposed on that from the disc, or the transient evolution of the disc emission itself. In the former scenario, QPEs are consistent with black-body emission from a region that expands by a factor of 2-3 during the individual QPE evolution with radius of the order of that of the Sun at QPE peak. In the alternative non-additive scenario, QPEs originate from a region with an area 6-30 times smaller than the quiescent state X-ray emission, with the smallest regions corresponding to the hottest and most luminous eruptions. The QPE reappearance reveals that eruptions are only present below a quiescent luminosity threshold corresponding to an Eddington ratio of the order of 0.4 for a one million solar masses black hole. The disappearance of QPEs above threshold is most likely driven by the ratio of QPE to quiescence temperatures approaching unity at high quiescent luminosity, making QPE detection challenging, if not impossible, above threshold. We briefly discuss some of the consequences of our results on the proposed models for the QPE physical origin. [abridged]
description: accepted for publication as A&A Letter
Synchronization of Four Non-identical Local Coupled Phase Oscillators in A Ring: Analytic Determination of The Critical Coupling and Phase Differences
Creators: name: El-Nashar, Hassan F.
name: Mahmoud, M. S.
name: Medhat, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We investigate a system of four nearest neighbour bidirectional coupled phase oscillators of dissimilar initial frequencies in a ring at the changeover into a synchronizing state. There are twenty four permutations upon assigning the initial frequencies to the oscillators. The local interaction between the adjacent coupled phase oscillators introduces details to the synchronization features. Therefore, for the four unalike local coupled oscillators, we classify all possible arrangements into three classes, where each class contains eight configurations. The synchronized state appears at the distinctive coupling when the oscillators transit to synchrony having noticeable characteristics for each class. Also, the unison behaviour emerges when a well-defined phase condition is developed. We utilize this conspicuous phase condition to obtain a mathematical expression predicting the distinguishing coupling for each class once the oscillators have a common frequency. The obtained expression is given in terms of the initial frequencies, at the minute the four local coupled phase oscillators attain the same frequency. The analytic formula of the critical coupling allows us to obtain expressions usable to determine the phase differences at the swop into a synchronization stage.
Beam-Material Interaction
Creators: name: Mokhov, N. V.
name: Cerutti, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Th is paper is motivated by the growing importance of better understanding of the phenomena and consequences of high- intensity energetic particle beam interactions with accelerator, generic target , and detector components. It reviews the principal physical processes of fast-particle interactions with matter, effects in materials under irradiation, materials response, related to component lifetime and performance, simulation techniques, and methods of mitigating the impact of radiation on the components and envir onment in challenging current and future application
description: 28 pages, contribution to the 2014 Joint International Accelerator School: Beam Loss and Accelerator Protection, Newport Beach, CA, USA , 5-14 Nov 2014
ext service now the extend
Creators: name: jan mefgt
Publisher: name: Zenodo
Year: 2022

description: https://mywifiextsetup.helpsite.com/articles/91291-methos-to-setup-mywifiext-netgear-extender-setup
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https://geany.org/p/Hs0W6/
https://paiza.io/projects/nIopmZ_busWvU3XlsV1IsA?language=php
GlobULeS-V. UVIT/AstroSat studies of stellar populations in NGC 362: Detection of Blue Lurkers in a Globular Cluster
Creators: name: Dattatrey, Arvind K.
name: Yadav, R. K. S.
name: Kumawat, Gourav
name: Rani, Sharmila
name: Singh, Gaurav
name: Subramaniam, Annapurni
name: Singh, Ravi S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of four blue lurkers with low and extremely low-mass white dwarf (ELM WDs) companions in the Galactic globular cluster NGC 362 using AstroSat Ultra Violet Imaging Telescope (UVIT). We analyzed the multi-wavelength spectral energy distribution (SED) of FUV-bright MS stars using data from the UVIT, UVOT, GAIA EDR3, and 2.2m ESO/MPI telescopes. Two each of low-mass WDs and ELM WDs are found as companions for the four blue lurkers by the fitting of two-component SED models. The effective temperatures, radii, luminosities, and masses of two low-mass WDs are (35000, 23000) K, (0.04, 0.05) Rsun , (1.45, 0.22) Lsun , and (0.2, 0.2) Msun, while the two ELM WDs are (14750, 14750) K, (0.09, 0.10) Rsun, (0.34, 0.40) Lsun, and (0.18, 0.18) Msun. The position of blue lurkers within the cluster shows that they originated via the Case A/B mass-transfer mechanism in a low-density environment. This is the first detection of blue lurkers with low-mass WDs and ELM WDs as companions in a globular cluster. The companion cooling age is less than 4 Myr, which suggests that they were just recently formed. These binary systems might have originated due to the cluster recent core collapse.
description: 6 pages, 3 figures, 1 table
Saturation scale fluctuations and multi-particle rapidity correlations
Creators: name: Bzdak, Adam
name: Dusling, Kevin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the effect of intrinsic fluctuations of the proton saturation momentum scale on event-by-event rapidity distributions. Saturation scale fluctuations generate an asymmetry in the single particle rapidity distribution in each event resulting in genuine n-particle correlations having a component linear in the rapidities of the produced particles, $y_1\cdots y_n$. We introduce a color domain model that naturally explains the centrality dependence of the two-particle rapidity correlations recently measured by ATLAS while constraining the probability distribution of saturation scale fluctuations in the proton. Predictions for n = 4, 6 and 8 particle correlations find that the four and eight-particle cumulant change sign at an intermediate multiplicity, a signature which could be tested experimentally.
description: 12 pages, 5 figures
Substantial reduction of write-error rate for voltage-controlled magnetoresistive random access memory by in-plane demagnetizing field and voltage-induced negative out-of-plane anisotropy field
Creators: name: Matsumoto, Rie
name: Yuasa, Shiniji
name: Imamura, Hiroshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Voltage-controlled magnetoresistive random access memory (VC-MRAM) based on voltage-induced dynamic switching in magnetic tunnel junctions (MTJs) is a promising ultimate non-volatile memory with ultralow power consumption. However, the dynamic switching in a conventional MTJ is accompanied by a relatively high write error rate (WER), hindering the reliable operation of VC-MRAM. Here, we propose a reliable writing scheme using the in-plane demagnetizing field (IDF) and voltage-induced negative out-of-plane anisotropy field (NOAF). Numerical simulations based on macrospin model demonstrate that the voltage-induced NOAF modifies the switching dynamics and increases the torque due to the IDF, thereby reducing the switching time. The IDF and voltage-induced NOAF also reduce the mean energy difference between the magnetization direction at the end of the pulse and the equilibrium direction. As a result, an appropriate combination of the IDF and voltage-induced NOAF reduces the WER by one order of magnitude compared with that of the dynamic switching in a conventional MTJ.
The Second Arecibo Search for 5 GHz Radio Flares from Ultracool Dwarfs
Creators: name: Route, Matthew
name: Wolszczan, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We describe our second installment of the 4.75 GHz survey of ultracool dwarfs (UCDs) conducted with the Arecibo radio telescope, which has observed 27 such objects and resulted in the detection of sporadic flaring from the T6 dwarf, WISEPC J112254.73+255021.5. We also present follow up observations of the first radio-emitting T dwarf, 2MASS J10475385+2124234, a tentatively identified radio emitting L1 dwarf, 2MASS J1439284+192915, and the known radio-flaring source, 2MASS J13142039+132011 AB. Our new data indicate that 2MASS J1439284+192915 is not a radio flaring source. The overall detection rate of our unbiased survey for radio-flaring UCDs is ~5% for new sources, with a detection rate for each spectral class of ~5-10%. Evidently, radio luminosity of the UCDs does not appear to monotonically decline with spectral type from M7 dwarfs to giant planets, in contradiction to theories of the magnetic field generation and internal structure of these objects. Along with other, recently published results, our data exemplify the unique value of using radio surveys to reveal and study properties of substellar magnetic activity.
description: Accepted to ApJ; 14 pages, 4 figures
QUESTIONNAIRES FOR PROTOCOL ON TO STUDY THE IMPACT OF IMPLEMENTATION OF NABH STANDARDS AMONG HEALTH CARE WORKERS IN TERTIARY CARE HOSPITAL, MAHARASHTRA.
Creators: name: Kanyal, Deepika
Publisher: name: Zenodo
Year: 2023

description: QUESTIONNAIRES FOR PROTOCOL ON TO STUDY THE IMPACT OF IMPLEMENTATION OF NABH STANDARDS AMONG HEALTH CARE WORKERS IN TERTIARY CARE HOSPITAL, MAHARASHTRA.
Sustained super-Eddington accretion around neutron stars & black holes
Creators: name: Ghodla, Sohan
name: Eldridge, J. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recently, it was shown that the formation of a photon-trapping surface might not be sufficient to ensure unimpeded super-Eddington (SE) accretion. In light of this finding, here we derive a condition such that sustained and unimpeded SE accretion could be achieved in optically thick slim accretion disks surrounding neutron stars (NSs) and black holes (BHs). For this, we calculate a semi-analytic approximation of the self-similar global radial velocity expression for an advection-dominated flow. Neglecting the influence of relativistic jets on the accretion flow, we find that for Eddington fraction $\dot{m} \gtrsim 1.5 (ε/0.1)^{3/5}$ ($ε$ being the accretion efficiency) sustained SE accretion might be possible in slim disks around BHs irrespective of their spin. The same condition holds for NSs when $ε> 0.03$. The presence of a surface magnetic field might truncate the disk at the magnetosphere of the NS, resulting in lower efficiencies and consequently changing the condition to $\dot{m} > 0.013 ε^{-19/31}$. Our approach suggests that sustained SE accretion might almost always be possible around NSs and BHs hosting accretion disks.
description: 7 pages, 4 Figures. Matches published version
Bounds for radii of starlikeness and convexity of some special functions
Creators: name: Aktaş, İbrahim
name: Baricz, Árpád
name: Orhan, Halit
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 30C45, 30C15, 33C10

description: In this paper we consider some normalized Bessel, Struve and Lommel functions of the first kind, and by using the Euler-Rayleigh inequalities for the first positive zeros of combination of special functions we obtain tight lower and upper bounds for the radii of starlikeness of these functions. By considering two different normalization of Bessel and Struve functions we give some inequalities for the radii of convexity of the same functions. On the other hand, we show that the radii of univalence of some normalized Struve and Lommel functions are exactly the radii of starlikeness of the same functions. In addition, by using some ideas of Ismail and Muldoon we present some new lower and upper bounds for the zeros of derivatives of some normalized Struve and Lommel functions. The Laguerre-Pólya class of real entire functions plays an important role in our study.
description: 13 pages