cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discovery of 20 UV Emitting SNRs in M31 with UVIT
Creators: name: Leahy, Denis
name: Monaghan, Christopher
name: Ranasinghe, Sujith
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first catalog of supernova remnants (SNRs) in M31 which exhibit diffuse ultraviolet (UV) emission. UV images of M31 were obtained by the Ultraviolet Imaging Telescope (UVIT) on the AstroSat satellite, and the list of SNRs was obtained from X-ray, optical and radio catalogues of SNRs in M31. We used the UVIT images to find SNRs with diffuse emission, omitting those too contaminated with stellar emission. 20 SNRs in M31 were detected with diffuse UV emission. Fluxes in the UVIT F148W, F169M, F172M, N219M and N279N filters are measured for these SNRs. The luminosities are compared to those computed from the spectra of seven known UV-emitting SNRs in the Milky Way, the LMC, and the SMC. We find similar spectral shapes between the known and the M31 UV-emitting SNRs. The spectral shapes and the diffuse nature of the emission are good evidence that the UV emissions are dominated by line emissions, like known SNRs, and the UV is associated with the SNRs. Models are applied to the 6 SNRs with X-ray spectra. The main difference is that the 2 X-ray/UV SNRs are Type Ia and the 4 X-ray/non-UV SNRs are core-collapse or unknown type. A comparison of M31 SNRs in different wavebands shows that most are detected optically, similar to the case for other nearby galaxies. 19 of the 20 UV-emitting SNRs are detected optically, expected because both UV and optical are from forbidden and recombination lines from shock-ionized gas.
description: 17 pages, 7 figures
Enhanced tripartite interactions in spin-magnon-mechanical hybrid systems
Creators: name: Hei, Xin-Lei
name: Li, Peng-Bo
name: Pan, Xue-Feng
name: Nori, Franco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Coherent tripartite interactions among degrees of freedom of completely different nature are instrumental for quantum information and simulation technologies, but they are generally difficult to realize and remain largely unexplored. Here, we predict a tripartite coupling mechanism in a hybrid setup comprising a single NV center and a micromagnet. We propose to realize direct and strong tripartite interactions among single NV spins, magnons and phonons via modulating the relative motion between the NV center and the micromagnet. Specifically, by introducing a parametric drive (two-phonon drive) to modulate the mechanical motion (such as the center-of-mass motion of a NV spin in diamond trapped in an electrical trap or a levitated micromagnet in a magnetic trap), we can obtain a tunable and strong spin-magnon-phonon coupling at the single quantum level, with up to two orders of magnitude enhancement for the tripartite coupling strength. This enables, for example, tripartite entanglement among solid-state spins, magnons, and mechanical motions in quantum spin-magnonics-mechanics with realistic experimental parameters. This protocol can be readily implemented with the well-developed techniques in ion traps or magnetic traps, and could pave the way for general applications in quantum simulations and information processing based on directly and strongly coupled tripartite systems.
description: To appear in PRL, 9 pages, 4 figures
The IGC Green Team - sustainable actions for greener institutions
Creators: name: C. Campos
name: S. Cardoso
name: C. Carmo
name: A. Confraria
name: R. Esteves
name: I. Geraldes
name: A. Nóvoa
name: P. Palma
name: L. Ruivo
name: E. Tranfield
name: K. Willmann
Publisher: name: Zenodo
Year: 2023
Subjects: Sustainable research
Green practices

description: The IGC Green Team is a grassroots voluntary group started in 2019 whose mission is to promote awareness of sustainable practices in research.
Nucleation and stabilization of carbon-rich structures in interstellar media
Creators: name: Patra, N.
name: Kral, P.
name: Sadeghpour, H. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study conditions under which carbon clusters of different sizes form and stabilize. {We describe an approach to equilibrium by simulating tenuous carbon gas dynamics to long times.} First, we use reactive molecular dynamics simulations to describe the nucleation of long chains, large clusters, and complex cage structures in carbon and hydrogen rich interstellar gas phases. We study how temperature, particle density, presence of hydrogen, and carbon inflow affect the nucleation of molecular moieties with different characteristics, in accordance with astrophysical conditions. We extend the simulations to densities which are orders of magnitude lower than current laboratory densities, to temperatures relevant to circumstellar environments of planetary nebulae, and to longtime (microsecond) formation timescales. We correlate cluster size distributions from dynamical simulations with thermodynamic equilibrium intuitions, where at low temperatures and gas densities, entropy plays a significant role.
description: 5 figures (accepted for ApJ)
Understanding the TeV $γ$-ray emission surrounding the young massive star cluster Westerlund 1
Creators: name: Härer, Lucia K.
name: Reville, Brian
name: Hinton, Jim
name: Mohrmann, Lars
name: Vieu, Thibault
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: Context: Young massive star clusters (YMCs) have come increasingly into the focus of discussions on the origin of galactic cosmic rays (CRs). The proposition of CR acceleration inside superbubbles (SBs) blown by the strong winds of these clusters avoids issues faced by the standard paradigm of acceleration at supernova remnant shocks. Aims: We provide an interpretation of the latest TeV $γ$-ray observations of the region around the YMC Westerlund 1 taken with the High Energy Stereoscopic System (H.E.S.S.) in terms of diffusive shock acceleration at the cluster wind termination shock, taking into account the spectrum and morphology of the emission. As Westerlund 1 is a prototypical example of a YMC, such a study is relevant to the general question about the role of YMCs for the Galactic CR population. Methods: We generate model $γ$-ray spectra, characterise particle propagation inside the SB based on the advection, diffusion, and cooling timescales, and constrain key parameters of the system. We consider hadronic emission from proton-proton interaction and subsequent pion decay and leptonic emission from inverse Compton scattering on all relevant photon fields, including the CMB, diffuse and dust-scattered starlight, and the photon field of Westerlund 1 itself. The effect of the magnetic field on cooling and propagation is discussed. Klein-Nishina effects are found to be important in determining the spectral evolution of the electron population. Results: A leptonic origin of the bulk of the observed $γ$-rays is preferable. The model is energetically plausible, consistent with the presence of a strong shock, and allows for the observed energy-independent morphology. The hadronic model faces two main issues: confinement of particles to the emission region and an unrealistic energy requirement.
description: Accepted for publication in Astronomy & Astrophyics
DIS coefficient functions at four loops in QCD and beyond
Creators: name: Moch, Sven-Olaf
name: Ruijl, Ben
name: Ueda, Takahiro
name: Vermaseren, Jos A. M.
name: Vogt, Andreas
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: strong interaction: coupling constant
threshold: expansion
quantum chromodynamics
strong coupling
deep inelastic scattering
structure function
perturbation theory

description: We report results for the lowest even-$N$ moments of the flavor-nonsinglet structure functions $F_2$ and $F_L$ in QCD at the fourth order in the perturbative expansion in the strong coupling constant $\alpha_s$. Our results are presented in numerical form and we compare them with the leading and subleading terms of the threshold expansion for large values of $N$, which corresponds to the limit $x \to 1$.
Conceptive Artificial Intelligence: Insights from design theory
Creators: name: Kazakci, Akin Osman
Publisher: name: arXiv
Year: 2014
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The current paper offers a perspective on what we term conceptive intelligence - the capacity of an agent to continuously think of new object definitions (tasks, problems, physical systems, etc.) and to look for methods to realize them. The framework, called a Brouwer machine, is inspired by previous research in design theory and modeling, with its roots in the constructivist mathematics of intuitionism. The dual constructivist perspective we describe offers the possibility to create novelty both in terms of the types of objects and the methods for constructing objects. More generally, the theoretical work on which Brouwer machines are based is called imaginative constructivism. Based on the framework and the theory, we discuss many paradigms and techniques omnipresent in AI research and their merits and shortcomings for modeling aspects of design, as described by imaginative constructivism. To demonstrate and explain the type of creative process expressed by the notion of a Brouwer machine, we compare this concept with a system using genetic algorithms for scientific law discovery.
Osteological form - SZ50520 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ50520, female aged 22-28 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'
Early stages of Galilean moon formation in a water-depleted environment
Creators: name: Mousis, Olivier
name: Schneeberger, Antoine
name: Lunine, Jonathan I.
name: Glein, Christopher R.
name: Bouquet, Alexis
name: Vance, Steven D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A key feature of the Galilean satellite system is its monotonic decrease in bulk density with distance from Jupiter, indicating an ice mass fraction that is zero in the innermost moon Io, and about half in the outer moons Ganymede and Callisto. Jupiter formation models, and perhaps the Juno spacecraft water measurements, are consistent with the possibility that the Jovian system may have formed, at least partly, from ice-poor material. And yet, models of the formation of the Galilean satellites usually assume abundant water ice in the system. Here, we investigate the possibility that the Jovian circumplanetary disk was populated with ice-depleted chondritic minerals, including phyllosilicates. We show that the dehydration of such particles and the outward diffusion of the released water vapor allow condensation of significant amounts of ice in the formation region of Ganymede and Callisto in the Jovian circumplanetary disk. Our model predicts that Europa, Ganymede and Callisto should have accreted little if any volatiles other than water ice, in contrast to the comet-like composition of Saturn's moon Enceladus. This mechanism allows for the presence of ice-rich moons in water-depleted formation environments around exoplanets as well.
description: Accepted for publication in The Astrophysical Journal Letters
Comparison of some properties of star forming galaxies and active galactic nuclei (AGNs) between two BOSS galaxy samples of SDSS DR9
Creators: name: Deng, Xin-Fa
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the LOWZ and CMASS samples of the ninth data release (DR9) from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS), I investigate properties of star forming galaxies and AGNs. The CMASS sample seriously suffers from the radial selection effect, even within the redshift 0.44
description: 13 pages, 4 figures, accepted by RAA
The helium abundance in the metal-poor globular clusters M30 and NGC6397
Creators: name: Mucciarelli, A.
name: Lovisi, L.
name: Lanzoni, B.
name: Ferraro, F. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the helium abundance of the two metal-poor clusters M30 and NGC6397. Helium estimates have been obtained by using the high-resolution spectrograph FLAMES at the ESO Very Large Telescope and by measuring the HeI line at 4471 A in 24 and 35 horizontal branch stars in M30 and NGC6397, respectively. This sample represents the largest dataset of He abundances collected so far in metal-poor clusters. The He mass fraction turns out to be Y=0.252+-0.003 (sigma=0.021) for M30 and Y=0.241+-0.004 (sigma=0.023) NGC6397. These values are fully compatible with the cosmological abundance, thus suggesting that the horizontal branch stars are not strongly enriched in He. The small spread of the Y distributions are compatible with those expected from the observed main sequence splitting. Finally, we find an hint of a weak anticorrelation between Y and [O/Fe] in NGC6397 in agreement with the prediction that O-poor stars are formed by (He-enriched) gas polluted by the products of hot proton-capture reactions.
description: Accepted for publication by ApJ
A Deep Gaussian Process Model for Seismicity Background Rates
Creators: name: Muir, Jack B.
name: Ross, Zachary E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The spatio-temporal properties of seismicity give us incisive insight into the stress state evolution and fault structures of the crust. Empirical models based on self-exciting point-processes continue to provide an important tool for analyzing seismicity, given the epistemic uncertainty associated with physical models. In particular, the epidemic-type aftershock sequence (ETAS) model acts as a reference model for studying seismicity catalogs. The traditional ETAS model uses simple parametric definitions for the background rate of triggering-independent seismicity. This reduces the effectiveness of the basic ETAS model in modelling the temporally complex seismicity patterns seen in seismic swarms that are dominated by aseismic tectonic processes such as fluid injection rather than aftershock triggering. In order to robustly capture time-varying seismicity rates, we introduce a deep Gaussian process formulation for the background rate as an extension to ETAS. Gaussian processes (GPs) are a robust non-parametric model for function spaces with covariance structure. By conditioning the lengthscale structure of a GP with another GP, we have a deep-GP: a probabilistic, hierarchical model that automatically tunes its structure to match data constraints. We show how the deep-GP-ETAS model can be efficiently sampled by making use of a Metropolis-within-Gibbs scheme, taking advantage of the branching process formulation of ETAS and a stochastic partial differential equation (SPDE) approximation for Matérn GPs. We illustrate our method using synthetic examples, and show that the deep-GP-ETAS model successfully captures multiscale temporal behavior in the background forcing rate of seismicity. We then apply the results to two real-data catalogues: the Ridgecrest, CA July 5 2019 Mw 7.1 event catalogue and the 2016--2019 Cahuilla, CA earthquake swarm.
description: Updated abstract to include more information
Unbounded asymmetry of stretch factors
Creators: name: Dowdall, Spencer
name: Kapovich, Ilya
name: Leininger, Christopher J
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary 20F65, Secondary 57M, 37B, 37E}

description: A result of Handel-Mosher guarantees that the ratio of logarithms of stretch factors of any fully irreducible automorphism of the free group $F_N$ and its inverse is bounded by a constant $C_N$. In this short note we show that this constant $C_N$ cannot be chosen independent of $N$.
description: 2 pages
Osteological form - SZ50522 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ50522, female aged 28-35 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'
Data Curation Toolbox: Empowering FAIR Data Sharing via Science Gateways
Creators: name: Honick, Brendan
name: Kenney, Mariah
name: Uranic, Jackie
Publisher: name: Zenodo
Year: 2023
Subjects: Data Curation
FAIR
Data Sharing
Research Data Management
Gateways

description: A paradigm shift in open science is occurring as national funding agencies for scientific research are requiring that researchers guarantee to publish their data in repositories in accordance with the FAIR Principles. Thus, effective data sharing among repositories has become a critical concern for multiple stakeholder groups: scientists sharing data, data curators organizing and coordinating datasets, technologists crafting repository tools (including infrastructure, network, security, graphics, and more), and end users consuming the data. To balance the needs and goals presented by the other stakeholder groups, data curators must be strategic in their role to successfully integrate data and metadata files from various sources and organize them for sharing via science gateways. Data curators ensure that data submissions to repositories adhere to the FAIR Principles, addressing issues that can arise from data or metadata. For instance, curators often encounter a lack of database fields that would allow benchmarking queries and reports to be created. There may also be problems with the data itself, such as incorrect formatting, missing data, duplicate values, etc. Data ingest workflows should be carefully designed to take these types of issues into consideration so they are rectified (or at least minimized) and not exacerbated. The complexity of ingesting datasets requires planning to preserve both data accuracy and incorporation of FAIR standards. Since data curators serve as a connection between technologists and scientists, they are uniquely positioned to offer insight on how to help digital repositories maintain FAIR and open standards. This poster presents a "data curation toolbox," useful tools and tactics that data curators can employ in their professional practice. This toolbox is generalized to allow for reproducibility by curators working on other gateways as well as empowering scientists to perform curation on their own projects.
Harmful entomomofauna of medicinal plants of the Lamiaceae family
Creators: name: Pospelov, S.V.
name: Nechiporenko, N.I.
name: Pospelova, A.D.
name: Kovalenko, N.P.
Publisher: name: Zenodo
Year: 2020
Subjects: medicinal herbs
pests
Lamiacea
Salvia officinalis
Scutellaria baicalensis
Melissa officinalis
Longitarsus lycopi,
Longitarsus lycopi
Chrysolina herbacea
Cassida viridis
Aphis menthae

description: The results of experimental data on the study of pests of medicinal plants of the Lamiaceae family: Mentha piperita, Salvia officinalis, Scutellaria baicalensis, Melissa officinalis are presented. Over the years of research on these crops, 18 species of phytophages of different families were found, among which the specialized pests Longitarsus lycopi Foudr., Chrysolina herbacea Duft., Cassida viridis L. and Aphis menthae Walk, as well as the polyphagous species of bugs and scoops, were dangerous for medicinal plants.
Interactive tree showing the frequency of ethnicity codes in GDPPR mapped from the larger ethnicity source to the most granular
Creators: name: Pineda Moncusi, Marta
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 420302
subject: Digital health
classificationCode: 420299
subject: Epidemiology not elsewhere classified

description: Interactive tree showing the frequency of ethnicity codes in GDPPR mapped from the larger ethnicity source (i.e., 6 high-level ethnic groups), the middle (i.e,19 NHS ethnicity codes) and, to the most granular (i.e., SNOMED-CT concepts).
Environmental dependence of different colors in the CMASS sample of the SDSS DR9
Creators: name: Deng, Xin-Fa
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this study, I investigate the environmental dependence of galaxy colors in the CMASS sample of the Sloan Digital Sky Survey Data Release 9 (SDSS DR9). To decrease the radial selection effect, I divide the CMASS sample into subsamples with a redshift binning size of 0.01 and analyze the environmental dependence of the u-r, u-g, g-r, r-i and i-z colors for these subsamples in each redshift bin. Statistical analysis shows that all the five colors weakly correlate with the local environment, which may mean that the environmental processes responsible for a galaxy's properties proceed slowly over cosmic time.
description: 12 pages, 6 figures, accepted by RAA
Osteological form - SZ50524 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ50524, juvenile aged 7-9 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'
One-dimensional weakly nonlinear model equations for Rossby waves
Creators: name: Henry, David
name: Ivanov, Rossen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: Primary: 35Q35, 35Q51, 35Q53, Secondary: 37K10

description: In this study we explore several possibilities for modelling weakly nonlinear Rossby waves in fluid of constant depth, which propagate predominantly in one direction. The model equations obtained include the BBM equation, as well as the integrable KdV and Degasperis-Procesi equations.
description: 15 pages
Роль апоптоза в патогенезе сахарного диабета 1 типа
Creators: name: Пекарева Елена Владимировна
name: Никонова Татьяна Васильевна
name: Смирнова Ольга Михайловна
Publisher: name: Сахарный диабет
Year: 2010
Subjects: АПОПТОЗ
САХАРНЫЙ ДИАБЕТ 1 ТИПА
FAS
FASL
APOPTOSIS
TYPE 1 DIABETES MELLITUS

description: Сахарный диабет 1 типа (СД1) характеризуется прогрессирующей деструкцией -клеток поджелудочной железы. Ведущая роль в разрушении -клеток при СД1 отводится апоптозу. В данной статье рассмотрены основные пути активации апоптотического процесса, возможная роль апоптоза в регуляции иммунных механизмов, имеющих место в патогенезе СД1.
description: Type 1 diabetes mellitus (DM1) is known to be associated with progressive destruction of pancreatic B-cells. Apoptosis plays the key role in this destructive process. The paper focuses on major mechanisms underlying activation of B-cell apoptosis and its role in regulation of immune processes in patients with DM1.
Revisiting the Pion Leading-Twist Distribution Amplitude within the QCD Background Field Theory
Creators: name: Zhong, Tao
name: Wu, Xing-Gang
name: Wang, Zhi-Gang
name: Huang, Tao
name: Fu, Hai-Bing
name: Han, Hua-Yong
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the pion leading-twist distribution amplitude (DA) within the framework of SVZ sum rules under the background field theory. To improve the accuracy of the sum rules, we expand both the quark propagator and the vertex $(z\cdot \tensor{D})^n$ of the correlator up to dimension-six operators in the background field theory. The sum rules for the pion DA moments are obtained, in which all condensates up to dimension-six have been taken into consideration. Using the sum rules, we obtain $\left|_{\rm 1\;GeV} = 0.338 \pm 0.032$, $\left|_{\rm 1\;GeV} = 0.211 \pm 0.030$ and $\left|_{\rm 1\;GeV} = 0.163 \pm 0.030$. It is shown that the dimension-six condensates shall provide sizable contributions to the pion DA moments. We show that the first Gegenbauer moment of the pion leading-twist DA is $a^π_2|_{\rm 1\;GeV} = 0.403 \pm 0.093$, which is consistent with those obtained in the literature within errors but prefers a larger central value as indicated by lattice QCD predictions.
description: 13 pages, 7 figures
A note on $L^p$-norms of quasi-modes
Creators: name: Sogge, Christopher D.
name: Zelditch, Steve
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this note we show how improved $L^p$-estimates for certain types of quasi-modes are naturally equaivalent to improved operator norms of spectral projection operators associated to shrinking spectral intervals of the appropriate scale. Using this, one can see that recent estimates that were stated for eigenfunctions also hold for the appropriate types of quasi-modes.
description: 11 pages
Activity and composition of the hyperactive comet 46P/Wirtanen during its close approach in 2018
Creators: name: Moulane, Y.
name: Jehin, E.
name: Manfroid, J.
name: Hutsemékers, D.
name: Opitom, C.
name: Shinnaka, Y.
name: Bodewits, D.
name: Benkhaldoun, Z.
name: Jabiri, A.
name: Hmiddouch, S.
name: Donckt, M. Vander
name: Pozuelos, F. J.
name: Yang, B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Hyperactive comets are a small group of comets whose activity are higher than expected. They seem to emit more water than they should based on the size of their nucleus and comet 46P/Wirtanen is one of them. Investigating its activity and composition evolution could provide clues about its origins and formation region in the Solar nebulae. Given the exceptional close approach in 2018 of comet 46P to the Earth, we aim to study the evolution of its activity and composition as a function of heliocentric distances before and after perihelion. We used both TRAPPIST telescopes to monitor the comet for almost a year with broad-band and narrow-band filters. We derived the production rates of five gaseous species, e.g. OH, NH, CN, C$_3$ and C$_2$, using a Haser model as well as the A($θ$)f$ρ$, dust proxy parameter. The comet was also observed with two optical high resolution spectrographs UVES and ESPRESSO mounted on the 8-m ESO VLT to measure the isotopic ratios of C and N, the oxygen forbidden lines ratios and the NH$_2$ ortho-to-para ratios. We followed during almost a year the rise and decline of the production rates of different species as well as the dust activity of 46P on both pre- and post-perihelion. Relative abundances with respect to CN and OH along the orbit of the comet show constant and symmetric abundance ratios and a typical coma composition. We determined the rotation period of the nucleus using high cadence observations and long series of CN images on several nights, and we obtained a value of (9.18$\pm$0.05) hr at perihelion. Using high resolution spectra of 46P coma, we derived C and N isotopic ratios of 100$\pm$20 and 150$\pm$30 and a green-to-red forbidden oxygen [OI] lines ratio of 0.23$\pm$0.02. We measured a NH$_2$ ortho-to-para ratio of 3.31$\pm$0.03 and derived an ammonia ratio of 1.19$\pm$0.03 corresponding to a spin temperature of 27$\pm$1 K.
description: 10 pages, 10 figures
Plank theorems via successive inradii
Creators: name: Bezdek, Karoly
Publisher: name: arXiv
Year: 2014
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In the 1930's, Tarski introduced his plank problem at a time when the field discrete geometry was about to born. It is quite remarkable that Tarski's question and its variants continue to generate interest in the geometric as well as analytic aspects of coverings by planks in the present time as well. Besides giving a short survey on the status of the affine plank conjecture of Bang (1950) we prove some new partial results for the successive inradii of the convex bodies involved. The underlying geometric structures are successive hyperplane cuts introduced several years ago by Conway and inductive tilings introduced recently by Akopyan and Karasev.
description: 8 pages. arXiv admin note: substantial text overlap with arXiv:0903.4637
Polynomial complexity of polar codes for non-binary alphabets, key agreement and Slepian-Wolf coding
Creators: name: Liu, Jingbo
name: Abbe, Emmanuel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider polar codes for memoryless sources with side information and show that the blocklength, construction, encoding and decoding complexities are bounded by a polynomial of the reciprocal of the gap between the compression rate and the conditional entropy. This extends the recent results of Guruswami and Xia to a slightly more general setting, which in turn can be applied to (1) sources with non-binary alphabets, (2) key generation for discrete and Gaussian sources, and (3) Slepian-Wolf coding and multiple accessing. In each of these cases, the complexity scaling with respect to the number of users is also controlled. In particular, we construct coding schemes for these multi-user information theory problems which achieve optimal rates with an overall polynomial complexity.
description: 6 pages; presented at CISS 2014
High Speed Focal Plane Wavefront Sensing with an Optical Chopper
Creators: name: Gerard, Benjamin L.
name: Dillon, Daren
name: Cetre, Sylvain
name: Jensen-Clem, Rebecca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Focal plane wavefront sensing and control is a critical approach to reducing non-common path errors between the a conventional astronomical adaptive optics (AO) wavefront sensor (WFS) detector and science camera. However, in addition to mitigating non-common path errors, recent focal plane wavefront sensing techniques have been developed to operate at speeds fast enough to enable "multi-WFS" AO, where residual atmospheric errors are further corrected by a focal plane WFS. Although a number of such techniques have been recently developed for coronagraphic imaging, here we present one designed for non-coronagraphic imaging. Utilizing conventional AO system components, this concept additionally requires (1) a detector imaging the focal plane of the WFS light source and (2) a pupil plane optical chopper device that is non-common path to the first WFS and is synchronized to the focal plane imager readout. These minimal hardware requirements enable the temporal amplitude modulation to resolve the sine ambiguity of even wavefront modes for both low, mid, and high wavefront spatial frequencies. Similar capabilities have been demonstrated with classical phase diversity by defocusing the detector, but such techniques are incompatible with simultaneous science observations. This optical chopping technique, however, enables science imaging at up to a 50% duty cycle. We present both simulations and laboratory validation of this concept on SEAL, the Santa Cruz Extreme AO Laboratory testbed.
description: accepted to PASP
STOCHASTIC ANALYSIS OF SITE SOIL PROFILES FUNDAMENTAL.pdf
Creators: name: Golkarfard, Hossein
Publisher: name: figshare
Year: 2020
Subjects: subject: 91402 Geomechanics and Resources Geotechnical Engineering
subject: FOS: Environmental engineering

description: In this paper, an attempt has been made to determine the fundamental period of a real site soil profile in Shiraz City using
approximate methods stochastically. For this purpose, four methods namely: weighted average of velocities of layers, the
sum periods of layers, successive use of the two-layers solution, and an approximate solution with cosine function were
compared to each other based on the obtained reliability indices.
Doping of Bi2Te3 using electron irradiation
Creators: name: Rischau, C. W.
name: Leridon, B.
name: Fauqué, B.
name: Metayer, V.
name: van der Beek, C. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electron irradiation is investigated as a way to dope the topological insulator Bi2Te3. For this, p-type Bi2Te3 single crystals have been irradiated with 2.5 MeV electrons at room temperature and electrical measurements have been performed in-situ as well as ex-situ in magnetic fields up to 14 T. The defects created by irradiation act as electron donors allowing the compensation of the initial hole-type conductivity of the material as well as the conversion of the conductivity from p- to n-type. The changes in carrier concentration are investigated using Hall effect and Shubnikov-de Haas (SdH) oscillations, clearly observable in the p-type samples before irradiation, but also after the irradiation-induced conversion of the conductivity to n-type. The SdH patterns observed for the magnetic field along the trigonal axis can be entirely explained assuming the contribution of only one valence and conduction band, respectively, and Zeeman-splitting of the orbital levels.
description: Final version
Osteological form - SZ30577 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ30577, male aged 25-35 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'
Osteological form - SZ29914 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ29914, female aged 60-80 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'. According to Jense 2018 the individual had multiple dental conditions, but the jaw was not to be found with the rest of the individual when I looked at it.
A Comparative Study of Solar Active Region 12371 with Data-constrained and Data-driven MHD Simulations
Creators: name: Inoue, Satoshi
name: Hayashi, Keiji
name: Miyoshi, Takahiro
name: Jing, Ju
name: Wang, Haimin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We performed two data-based magnetohydrodynamic (MHD) simulations for solar active region 12371 which produced an M6.5 flare. The first simulation is a full data-driven simulation where the initial condition is given by a nonlinear force-free field (NLFFF). This NLFFF was extrapolated from photospheric magnetograms approximately 1 hour prior to the flare, and then a time-varying photospheric magnetic field is imposed at the bottom surface. The second simulation is also a data-driven simulation, but it stops driving at the bottom before the time of flare onset and then switches to the data-constrained simulation, where the horizontal component of the magnetic field varies according to an induction equation while the normal component is fixed with time. Both simulations lead to an eruption, with both simulations producing highly twisted field lines before the eruption which were not found in the NLFFF alone. After the eruption, the first simulation based on the time-varying photospheric magneitic field, continues to produce sheared field lines after the flare without reproducing phenomena such as post-flare loops. The second simulation reproduces the phenomena associated with flares well. However in this case the evolution of the bottom magnetic field is inconsistent with the evolution of the observed magnetic field. In this letter, we report potential advantages and disadvantages in data-constrained and data-driven MHD simulations that need to be taken into consideration by future studies.
description: Accepted for Publication in The Astrophysical Journal Letters
Jet fragmentation via azimuthal angular correlations of heavy flavor decay electrons in pp, p--Pb, and Pb--Pb collisions using PYTHIA8+Angantyr
Creators: name: Singh, Ravindra
name: Bailung, Yoshini
name: Kundu, Sumit Kumar
name: Roy, Ankhi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Measurements in heavy flavor azimuthal angular correlation provide insight into the production, propagation, and hadronization of heavy flavor jets in ultra-relativistic hadronic and heavy-ion collisions. These measurements across different colliding systems, like p--A and A--A, help us isolate the possible modification in particle production due to cold nuclear matter (CNM) effects and the formation of Quark-Gluon Plasma (QGP), respectively. Jet correlation studies give direct access to the initial parton dynamics produced in these collisions. This article studies the azimuthal angular correlations of electrons from heavy flavor hadron decays in pp, p--Pb, and Pb--Pb collisions at $\sqrt{s_\rm{NN}} =$ 5.02 TeV using PYTHIA8+Angantyr. We study the production of heavy flavor jets with different parton level processes, including multi-parton interactions, different color reconnection prescriptions, and initial and final state radiation processes. In addition, we add the hadron-level processes, i.e., Bose-Einstein and rescattering effects, to quantify the effect due to these processes. The heavy flavor electron correlations are calculated in the different trigger and associated $p_\rm{T}$ intervals to characterize the impact of hard and soft scattering in the various colliding systems. The yields and the sigmas associated with the near-side (NS) and away-side (AS) correlation peaks are calculated and studied as a function of associated $p_\rm{T}^{assoc}$ for different trigger $p_\rm{T}^{e}$ ranges.
CRISM south polar mapping: First Mars year of observations
Creators: name: Brown, Adrian J.
name: Calvin, Wendy M.
name: McGuire, Patrick C.
name: Murchie, Scott L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report on mapping of the south polar region of Mars using data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument. Our observations have led to the following discoveries: 1. Water ice is present in the form of pole-circling clouds originating from the circum-Hellas region, beginning prior to Ls=162 and diminishing markedly at Ls=200-204. 2. It has previously been inferred by temperature measurements(Titus et al., 2003) and CO2-H2O mixture spectral models (Langevin et al., 2007) that surface water ice was present in the Cryptic Region in the final stages of sublimation. The high resolution of CRISM has revealed regions where only water ice is present (not a CO2-H2O ice mixture). This water ice disappears completely by Ls=252 and may be the source of water vapor observed by CRISM in southern latitudes between Ls=240-260 (Smith, et al., this issue). 3. We have estimated surface CO2 ice grain size distributions for the South Pole Residual Cap (SPRC) and the seasonal CO2 ice cap that covers it throughout summer spring and summer. Our analysis suggests that grain sizes peak at Ls=191-199 with an apparent grain size of ~7 +/-1 cm. By the end of the summer period our analysis demonstrates minimum apparent grain sizes of ~5 +/-1 mm predominate in the SPRC. 4. Fine grained CO2 ice condenses from Ls=0-40, and extends symmetrically away from the geographic pole, extending beyond 80 deg S by Ls=4-10. No evidence for unusual CO2 depositional processes in the Cryptic Region is observed up to Ls=16.
description: 31 pages, 8 figures, 1 table
Healing Touch: Hermeneutics of Trauma and Recovery
Creators: name: Kearney, Richard
Publisher: name: Journal of Applied Hermeneutics
Year: 2020

description: This is an edited, abridged, and revised version of a chapter written by Richard Kearney which will appear in his forthcoming book Touch: Recovering Our Most Vital Sense to be published by Columbia University Press in 2021. The chapter in the book contains many extensions, footnotes, and references that do not appear in this paper. Many thanks to Professor Kearney for his permission to print a version of this chapter in the Journal of Applied Hermeneutics. Keywords: touch, trauma, healing, carnal hermeneutics
description: Journal of Applied Hermeneutics, 2020: 2020
Influence of the magnetic field topology in the evolution of small-scale two-fluid jets in the solar atmosphere
Creators: name: Díaz-Figueroa, E. E.
name: de Parga, G. Ares
name: González-Avilés, J. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform a series of numerical simulations to recreate small-scale two-fluid jets using the JOANNA code, considering the magnetohydrodynamics of two fluids (ions + electrons and neutral particles). We first excite the jets in a uniform magnetic field by using velocity pulse perturbations located at $y_{0}=$1.3, 1.5, and 1.8 Mm, considering the base of the photosphere at $y=0$ Mm. Then, we repeat the excitation of the jets in a magnetic field that mimics a flux tube. Mainly, the jets excited at the upper chromosphere ($y\sim1.8$ Mm) reach lower heights than those excited at the lower chromosphere ($y\sim1.3$ Mm); this is due to the higher initial vertical location because of the lesser amount of plasma dragging. In both scenarios, the dynamics of the neutral particles and ions show similar behavior; however, we can still identify some differences in the velocity drift, which in our simulations is of the order of $10^{-3}$ km s$^{-1}$ at the tips of the jets once they reached their maximum heights. Also, we estimate the heat generation due to the friction between ions and neutrals ($Q^{in}_{i,n}$), which is of the order of $0.002-0.06$ W m$^{-3}$; however it is small to contribute to the heating of the surroundings of the solar corona. The jets in the two magnetic environments do not show substantial differences other than a slight variation in the maximum heights reached, particularly in the uniform magnetic field scenario. Finally, the maximum heights reached by the three different jets are in the range of some morphological parameters corresponding to macrospicules, Type I spicules, and Type II spicules.
description: 15 pages, 6 figures. Accepted for publication in Physics
SysCID map: a computational knowledge repository for rheumatoid arthritis, systemic lupus erythematosus and inflammatory bowel disease
Creators: name: Acencio, Marcio Luis
name: Ostaszewski, Marek
name: Gu, Wei
name: Satagopam, Venkata
name: Schneider. Reinhard
Publisher: name: Zenodo
Year: 2020

description: Chronic inflammatory diseases (CID) is a group of incurable immune system disorders for which no effective treatment options are currently available. Three autoimmune conditions, namely, rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and inflammatory bowel disease (IBD) are the major forms of CID with a prevalence of over 10% in Europe. Considering this high prevalence and the associated medical and societal burdens, establishing effective treatments for these CID-related conditions is urgently required. However, RA, SLE and IBD all emerge from a complex interplay among proteins, small chemical compounds, environmental factors and a myriad of different types of cells which makes the process of identifying successful druggable targets a formidable challenge for the CID research community. This challenge could be overcome by systems biology approaches as these approaches interrogate complex biological systems through large-scale quantification of numerous biomolecules. Thus, with the aim of facilitating the utilisation of systems biology approaches for the prediction of new druggable targets or even the discovery of new pathways, we built a map, the SysCID map, that encompasses the major molecular and cellular events involved in the onset and progression of RA, SLE and IBD. Encoded in a CellDesigner’s SBML format, the SysCID map contains 1027 reactions and 693 bioentities manually collected from 303 publications. All entities and reactions are well-annotated according to the standards provided by the Minimal Information Requested In the Annotation of Models (MIRIAM). The SysCID map is expected to be both a standardised knowledge repository for the CID research community as well as a hypothesis-generating resource for new discoveries concerning RA, SLE and IBD.
Osteological form - SZ50003 from St. Nicholas Church, Oslo
Creators: name: Schiøtz, Sara Georgine Fløien
Publisher: name: figshare
Year: 2022
Subjects: subject: 210102 Archaeological Science
subject: FOS: History and archaeology
subject: Archaeology

description: Osteological form of the individual SZ50003, undetermined sex aged 25-32 years, from St. Nicholas Church, Oslo. The form is made up of attachments from Buikstra and Ubelaker's Standards from 1994. The age and sex estimates are from the osteological report (Osteologisk analyse av skjelettmaterialet fra Nikolaikirkens kirkegård, NIKU oppdragsrapport 160/2016, by Jensen, Anne Østegaard in 2018) It was used as 'raw data' for my master's thesis 'Paleopathology and Health in Medieval Oslo'