cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Submillimeter polarisation and magnetic field properties in the envelopes of proto-planetary nebulae CRL 618 and OH 231.8+4.2
Creators: name: Sabin, L.
name: Zhang, Q.
name: Zijlstra, A. A.
name: Patel, N. A.
name: Vázquez, R.
name: Zauderer, B. A.
name: Contreras, M. E.
name: Guillén, P. F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have carried out continuum and line polarisation observations of two Proto-planetary nebulae (PPNe), CRL 618 and OH 231.8+4.2, using the Submillimeter Array (SMA) in its compact configuration. The frequency range of observations, 330-345 GHz, includes the CO(J=3-2) line emission. CRL 618 and OH 231.8+4.2 show quadrupolar and bipolar optical lobes, respectively, surrounded by a dusty envelope reminiscent of their AGB phase. We report a detection of dust continuum polarised emission in both PPNe above 4 sigma but no molecular line polarisation detection above a 3 sigma limit. OH 231.8+4.2 is slightly more polarised on average than CRL 618 with a mean fractional polarisation of 4.3 and 0.3 per cent, respectively. This agrees with the previous finding that silicate dust shows higher polarisation than carbonaceous dust. In both objects, an anti-correlation between the fractional polarisation and the intensity is observed. Neither PPNe show a well defined toroidal equatorial field, rather the field is generally well aligned and organised along the polar direction. This is clearly seen in CRL 618 while in the case of OH 231.8+4.2, the geometry indicates an X-shaped structure coinciding overall with a dipole/polar configuration. However in the later case, the presence of a fragmented and weak toroidal field should not be discarded. Finally, in both PPNe, we observed that the well organised magnetic field is parallel with the major axis of the 12CO outflow. This alignment could indicate the presence of a magnetic outflow launching mechanism. Based on our new high resolution data we propose two scenarios to explain the evolution of the magnetic field in evolved stars.
description: 11 pages, 8 figures and 1 table. Accepted for publication in the Monthly Notices of the Royal Astronomical Society
NOEMA spatially resolved view of the multi-phase outflow in IRAS17020+4544: a shocked wind in action?
Creators: name: Longinotti, Anna Lia
name: Salomé, Quentin
name: Feruglio, Chiara
name: Krongold, Yair
name: García-Burillo, Santiago
name: Giroletti, Marcello
name: Panessa, Francesca
name: Stanghellini, Carlo
name: Vega, Olga
name: Patiño-Álvarez, Victor Manuel
name: Chavushyan, Vahram
name: Elías-Chavez, Mauricio
name: Robleto-Orús, Aitor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Narrow Line Seyfert 1 Galaxy IRAS17020+4544 is one of the few AGN where a galaxy-scale energy-conserving outflow was revealed. This paper reports on NOEMA observations addressed to constrain the spatial scale of the CO emission in outflow. The molecular outflowing gas is resolved in five components tracing approaching and receding gas, all located at a distance of 2-3~kpc on the West and East side of the active nucleus. This high velocity gas (up to v_out=~1900 km/s) is not coincident with the rotation pattern of the CO gas in the host galaxy disk. The estimated mass outflow rate shows that with a global mass output of $\dot{M}_{H_2}$=~139$\pm$20$~M_\odot$~yr$^{-1}$, this powerful galaxy-scale outflow is consistent with the wind conserving its energy, and with a momentum rate boost of a factor of ~30 compared to the momentum rate of the nuclear X-ray wind. Preliminary results from ancillary X-ray (Chandra) and radio images (e-MERLIN) are reported. While the nature of the radio source is not conclusive, the Chandra image may tentatively trace extended emission, as expected by an expanding bubble of hot X-ray gas. The outcome of the NOEMA analysis and of past and ongoing publications dedicated to the description of the outflow multi-band phenomenology in IRAS17020+4544 concur to provide compelling reasons to postulate that an outflow shocking with the galaxy interstellar medium is driving the multi-phase wind in this peculiar AGN.
description: Accepted for publication on MNRAS, 17 pages, 7 figures
title: From Accession to Access: A Born-Digital Materials Case Study
Creators: name: Shein, Cyndi
Publisher: name: Utah State University
Year: 2020

description: Between 2011 and 2013 the Getty Institutional Records and Archives made its first foray into the comprehensive ingest, arrangement, description, and delivery of unique born-digital material when it received oral history interviews generated by some of the Pacific Standard Time: Art in L.A. project partners. This case study touches upon the challenges and affordances inherent to this hybrid collection of audiovisual recordings, digital mixed-media files, and analog transcripts. It describes the Archives’ efforts to develop a basic processing workflow that applies the resource-management strategy commonly known as “MPLP” in a digital environment, while striving to safeguard the integrity and authenticity of the files, adhere to professional standards, and uphold fundamental archival principles. The study describes the resulting workflow and highlights a few of the inexpensive technologies that were successfully employed to automate or expedite steps in the processing of content that was transferred via easily-accessible media and consisted of current file formats.
Safe Exploration of State and Action Spaces in Reinforcement Learning
Creators: name: Garcia, Javier
name: Fernandez, Fernando
Publisher: name: arXiv
Year: 2014
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper, we consider the important problem of safe exploration in reinforcement learning. While reinforcement learning is well-suited to domains with complex transition dynamics and high-dimensional state-action spaces, an additional challenge is posed by the need for safe and efficient exploration. Traditional exploration techniques are not particularly useful for solving dangerous tasks, where the trial and error process may lead to the selection of actions whose execution in some states may result in damage to the learning system (or any other system). Consequently, when an agent begins an interaction with a dangerous and high-dimensional state-action space, an important question arises; namely, that of how to avoid (or at least minimize) damage caused by the exploration of the state-action space. We introduce the PI-SRL algorithm which safely improves suboptimal albeit robust behaviors for continuous state and action control tasks and which efficiently learns from the experience gained from the environment. We evaluate the proposed method in four complex tasks: automatic car parking, pole-balancing, helicopter hovering, and business management.
title: Deconstructing the Critical Theory Archive at UCI: An Experiment with EAC-CPF and Linked Open Data
Creators: name: Seltzer, Sara Renée
name: Bisio, Alexandra M
name: Liu, Shu
Publisher: name: Utah State University
Year: 2020

description: The University of California, Irvine (UCI) Libraries has begun a pilot project exploring the use of Encoded Archival Context-Corporate Bodies, Persons, and Families (EAC-CPF) and linked open data to expose contextual information about holdings in UCI's Critical Theory Archive (CTA). The project team has identified a number of goals emphasizing public service, sustainability, and scalable experimentation. This work-in-progress article reports the pilot's background, scope, status through July 2014, and future plans.
Collaborative Primary Care: The impact of Interprofessional Teams on Panel Size: A Rapid Scoping Review
Creators: name: Carter, Cris
name: Jasmeen Dourka
name: McGowan, Jessie
name: Sibley, Lyn
name: Rajendra, Kanya
name: Thelen, Rachel
name: Dipika Neupane
name: Hina Ansari
name: Khan, Paul A.
name: Ivers, Noah
name: Nincic, Vera
name: Thirugnanasampanthar, Sai Surabi
name: Kiran, Tara
name: Tricco, Andrea
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Collaborative primary care
subject: Interprofessional primary care
subject: Interprofessional primary care teams
subject: Knowledge synthesis
subject: Scoping Review
subject: Team-based collaborative primary care

description: The aim of this rapid scoping review is to summarize the literature on the impact of interprofessional primary care team in terms of capacity of most responsible clinician (i.e., family physicians, nurse practitioner, primary care pediatrician, physician assistant and internist) to see more patients.
Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)
Creators: name: Liu, Wei
name: Ofman, Leon
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Global extreme ultraviolet (EUV) waves are spectacular traveling disturbances in the solar corona associated with energetic eruptions such as coronal mass ejections (CMEs) and flares. Over the past 15 years, observations from three generations of space-borne EUV telescopes have shaped our understanding of this phenomenon and at the same time led to controversy about its physical nature. Since its launch in 2010, the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) has observed more than 210 global EUV waves in exquisite detail, thanks to its high spatio-temporal resolution and full-disk, wide-temperature coverage. A combination of statistical analysis of this large sample, 30 some detailed case studies, and data-driven MHD modeling, has been leading their physical interpretations to a convergence, favoring a bimodal composition of an outer, fast-mode magnetosonic wave component and an inner, non-wave CME component. Adding to this multifaceted picture, AIA has also discovered new EUV wave and wave-like phenomena associated with various eruptions, including quasi-periodic fast propagating (QFP) wave trains, magnetic Kelvin-Helmholtz instabilities (KHI) in the corona and associated nonlinear waves, and a variety of mini EUV waves. Seismological applications using such waves are now being actively pursued, especially for the global corona. We review such advances in EUV wave research focusing on recent SDO/AIA observations, their seismological applications, related data analysis techniques, and numerical and analytical models.
description: Accepted to Solar Physics (Topical Issue, "Exploring the Network of SDO Science")
Anomalies of discrete symmetries in three dimensions and group cohomology
Creators: name: Kapustin, Anton
name: Thorngren, Ryan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study 't Hooft anomalies for a global discrete internal symmetry G. We construct examples of bosonic field theories in three dimensions with a non-vanishing 't Hooft anomaly for a discrete global symmetry. We also construct field theories in three dimensions with a global discrete internal symmetry G_1 x G_2 such that gauging G_1 necessarily breaks G_2 and vice versa. This is analogous to the Adler-Bell-Jackiw axial anomaly in four dimensions and parity anomaly in three dimensions.
description: 4 pages, latex
Osteological form - SZ15557 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 SZ15557, female aged 40-55 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'
Weak lensing peak statistics -- steepness versus height
Creators: name: Li, Ziwei
name: Liu, Xiangkun
name: Fan, Zuhui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In weak-lensing cosmological studies, peak statistics is sensitive to nonlinear structures and thus complementary to cosmic shear two-point correlations. In this paper, we explore a new approach, namely, the peak steepness statistics, with the overall goal to understand the cosmological information embedded there in comparison with the commonly used peak height statistics. We perform the analyses with ray-tracing simulations considering different sets of cosmological parameters $Ω_{\rm m}$ and $σ_8$. A theoretical model to calculate the abundance of high peaks based on steepness is also presented, which can well describe the main trend of the peak distribution from simulations. We employ $Δχ^2$ and Fisher analyses to study the cosmological dependence of the two peak statistics using our limited sets of simulations as well as our theoretical model. Within our considerations without including potential systematic effects, the results show that the steepness statistics tends to have higher sensitivities to the cosmological parameters than the peak height statistics and this advantage is diluted with the increase of the shape noise. Using the theoretical model, we investigate the physical reasons accounting for the different cosmological information embedded in the two statistics. Our analyses indicate that the projection effect from large-scale structures plays an important role to enhance the gain from the steepness statistics. The redshift and cosmology dependence of dark matter halo density profiles also contributes to the differences between the two statistics.
description: 20 pages, 15 figures. Accepted for publication in MNRAS
Early Evolution and 3D Structure of Embedded Star Clusters
Creators: name: Cournoyer-Cloutier, Claude
name: Sills, Alison
name: Harris, William E.
name: Appel, Sabrina M.
name: Lewis, Sean C.
name: Polak, Brooke
name: Tran, Aaron
name: Wilhelm, Martijn J. C.
name: Mac Low, Mordecai-Mark
name: McMillan, Stephen L. W.
name: Zwart, Simon Portegies
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform simulations of star cluster formation to investigate the morphological evolution of embedded star clusters in the earliest stages of their evolution. We conduct our simulations with Torch, which uses the AMUSE framework to couple state-of-the-art stellar dynamics to star formation, radiation, stellar winds, and hydrodynamics in FLASH. We simulate a suite of $10^4$ M$_{\odot}$ clouds at 0.0683 pc resolution for $\sim$ 2 Myr after the onset of star formation, with virial parameters $α$ = 0.8, 2.0, 4.0 and different random samplings of the stellar initial mass function and prescriptions for primordial binaries. Our simulations result in a population of embedded clusters with realistic morphologies (sizes, densities, and ellipticities) that reproduce the known trend of clouds with higher initial $α$ having lower star formation efficiencies. Our key results are as follows: (1) Cluster mass growth is not monotonic, and clusters can lose up to half of their mass while they are embedded. (2) Cluster morphology is not correlated with cluster mass and changes over $\sim$ 0.01 Myr timescales. (3) The morphology of an embedded cluster is not indicative of its long-term evolution but only of its recent history: radius and ellipticity increase sharply when a cluster accretes stars. (4) The dynamical evolution of very young embedded clusters with masses $\lesssim$ 1000 M$_{\odot}$ is dominated by the overall gravitational potential of the star-forming region rather than by internal dynamical processes such as two- or few-body relaxation.
description: 15 pages, 10 figures, to be published in MNRAS
On a superconvergent lattice Boltzmann boundary scheme
Creators: name: Dubois, François
name: Lallemand, Pierre
name: Tekitek, Mohamed Mahdi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In a seminal paper Ginzburg and Adler analyzed the bounce-back boundary conditions for the lattice Boltzmann scheme and showed that it could be made exact to second order for the Poiseuille flow if some expressions depending upon the parameters of the method were satisfied, thus defining so-called "magic parameters". Using the Taylor expansion method that one of us developed, we analyze a series of simple situations (1D and 2D) for diffusion and for linear fluid problems using bounce-back and "anti bounce-back" numerical boundary conditions. The result is that "magic parameters" depend upon the detailed choice of the moments and of their equilibrium values. They may also depend upon the way the flow is driven.
description: 14 pages
Surprise(s) in magnets without net moments
Creators: name: Damle, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We are all familiar with ferromagnetic and antiferromagnetic materials, in which the localized ionic moments (in case of ionic insulators) or the electronic spins (in case of metals) go into a long-range ordered state with a net macroscopic moment (in case of ferromagnets) or a net macroscopic sublattice magnetization (in case of antiferromagnets). However this behaviour is far from ubiquitous even in ionic insulators with well-developed local moments. Indeed, there are many ionic insulators in which the dominant interactions between the local moments compete with each other, leading to a cooperative paramagnetic state with no ordering of the moments down to the lowest temperatures accessible to experiments. The physics of such magnets without net moments has some interesting and surprising aspects, which are touched upon in this brief review.
description: arXival version of brief review published in 2009
Irrelevant and independent natural extension for sets of desirable gambles
Creators: name: de Cooman, Gert
name: Miranda, Enrique
Publisher: name: arXiv
Year: 2014
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The results in this paper add useful tools to the theory of sets of desirable gambles, a growing toolbox for reasoning with partial probability assessments. We investigate how to combine a number of marginal coherent sets of desirable gambles into a joint set using the properties of epistemic irrelevance and independence. We provide formulas for the smallest such joint, called their independent natural extension, and study its main properties. The independent natural extension of maximal coherent sets of desirable gambles allows us to define the strong product of sets of desirable gambles. Finally, we explore an easy way to generalise these results to also apply for the conditional versions of epistemic irrelevance and independence. Having such a set of tools that are easily implemented in computer programs is clearly beneficial to fields, like AI, with a clear interest in coherent reasoning under uncertainty using general and robust uncertainty models that require no full specification.
Online risks related to suicidal thoughts: A cross-sectional study with a sample of Italian students. Online risks related to suicidal thoughts
Creators: name: Amendola, Simone
name: Cerutti, Rita
Publisher: name: Psychology Hub
Year: 2023

description: The aims of the present study were to expand scientific evidence on exposure to online risks (i.e., contact and content risks) as well as to analyse associations between exposure to online risks and suicidal thoughts. The sample comprised 141 adolescent students (58.2% males, n= 82) with a mean age of 14.05 years (standard deviation= 1.42). Data were collected using questions adapted from the EU Kids online survey, the Body Investment Scale, the Children Depression Inventory 2 (Short), the Internet Disorder Scale and one item of the Brief Symptom Inventory for suicidal thoughts. Bivariate and multivariable associations were tested to explore the relationships between online risks and the absence/presence of suicidal thoughts. Sixty-five percent of the sample reported at least one online risk. Online risks, in order of frequency, were the following: hate messages (43%), violent images (42%), drug experiences (22%), ways of hurting oneself (21%), committing suicide (16%) and being very thin (15%). One in ten (n= 14) participants experienced suicidal thoughts. Exposure to online content on ways of physically harming oneself, committing suicide, experiences of taking drugs, and increasing number of online risks were associated with suicidal thoughts even when controlling for body investment, symptoms of depression and problematic internet use. Mental health professionals need to carefully investigate the way in which young patients use the Internet, with the awareness that specific online experiences may be indicative of the presence of suicidal thoughts.
description: Psychology Hub, Vol. 40 No. 2 (2023)
Evidence for Coherent Curvature Radiation in PSR J1645$-$0317 with Disordered Distribution of Polarization Position Angle
Creators: name: Mitra, Dipanjan
name: Melikidze, George I.
name: Basu, Rahul
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The diverse polarization properties in pulsars are in conflict with applying a unique emission mechanism to the population. The polarization position angle (PPA) traverse in most pulsars shows a S-shaped curve that can be interpreted using the rotating vector model (RVM) as the radio emission being directed either parallel or perpendicular to the divergent magnetic field lines and argues for a coherent curvature radiation mechanism from charge bunches in a strongly magnetized pair plasma. However, in a subset of pulsars the radio emission is significantly depolarized and the PPA shows a complex pattern which cannot be explained using RVM. We propose that even in such cases the highly polarized time samples in the single pulses should follow the RVM with possibly two parallel tracks separated by 90\degr. We have investigated PSR J1645$-$0317, with complex PPA traverse, and demonstrated for the first time that considering only the highly polarized time samples in the single pulses, the PPA distribution clearly follows the RVM. We conclude that this strongly favour the coherent curvature radiation mechanism to be universally applicable in the pulsar population.
description: 1 Figure, accepted for publication in MNRAS letters
Osteological form - SZ13199 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 SZ13199, male aged 50-70 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) 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'
Time series analysis of bright TESS RRc stars: Additional modes, phase variations and more
Creators: name: Benkő, J. M.
name: Plachy, E.
name: Netzel, H.
name: Bódi, A.
name: Molnár, L.
name: Pál, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using two years of data from the TESS space telescope, we have investigated the time series of 633 overtone pulsating field RR Lyrae (RRc) stars. The majority of stars (82.8 per cent) contain additional frequencies beyond the main pulsation. In addition to the frequencies previously explained by the $\ell = 8$ and $\ell = 9$ non-radial modes, we have identified a group of stars where the additional frequencies may belong to the $\ell = 10$ non-radial modes. We found that stars with no additional frequencies are more common among stars with shorter periods, while stars with longer periods almost always show additional frequencies. The incidence rate and this period distribution both agree well with the predictions of recent theoretical models. The amplitude and phase of additional frequencies are varying in time. The frequencies of different non-radial modes appearing in a given star seem to vary on different timescales. We have determined a 10.4 per cent incidence rate for the Blazhko effect. For several stars we have detected continuous annual-scale phase change without significant amplitude variation. This type of variation offers a plausible explanation for the `phase jump' phenomenon reported in many RRc stars. The main pulsation frequency could show quasi-periodic phase and amplitude fluctuations. This fluctuation is clearly related to additional frequencies present in the star: stars with two non-radial modes show the strongest fluctuations, while stars with no such modes show no fluctuations at all. The summation of the phase fluctuation over time may explain the O-C variations that have long been known for many non-Blazhko RRc stars.
description: 20 pages, 20 figures, accepted for publication in MNRAS
Spitzer View of Massive Star Formation in the Tidally Stripped Magellanic Bridge
Creators: name: Chen, C. -H. Rosie
name: Indebetouw, Remy
name: Muller, Erik
name: Kawamura, Akiko
name: Gordon, Karl D.
name: Sewiło, Marta
name: Whitney, Barbara A.
name: Fukui, Yasuo
name: Madden, Suzanne C.
name: Meade, Marilyn R.
name: Meixner, Margaret
name: Oliveira, Joana M.
name: Robitaille, Thomas P.
name: Seale, Jonathan P.
name: Shiao, Bernie
name: van Loon, Jacco Th.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Magellanic Bridge is the nearest low-metallicity, tidally stripped environment, offering a unique high-resolution view of physical conditions in merging and forming galaxies. In this paper we present analysis of candidate massive young stellar objects (YSOs), i.e., {\it in situ, current} massive star formation (MSF) in the Bridge using {\it Spitzer} mid-IR and complementary optical and near-IR photometry. While we definitely find YSOs in the Bridge, the most massive are $\sim10 M_\odot$, $\ll45 M_\odot$ found in the Large Magellanic Cloud (LMC). The intensity of MSF in the Bridge also appears decreasing, as the most massive YSOs are less massive than those formed in the past. To investigate environmental effects on MSF, we have compared properties of massive YSOs in the Bridge to those in the LMC. First, YSOs in the Bridge are apparently less embedded than in the LMC: 81% of Bridge YSOs show optical counterparts, compared to only 56% of LMC sources with the same range of mass, circumstellar dust mass, and line-of-sight extinction. Circumstellar envelopes are evidently more porous or clumpy in the Bridge's low-metallicity environment. Second, we have used whole samples of YSOs in the LMC and the Bridge to estimate the probability of finding YSOs at a given \hi\ column density, N(HI). We found that the LMC has $\sim3\times$ higher probability than the Bridge for N(HI) $>10\times10^{20}$ cm$^{-2}$, but the trend reverses at lower N(HI). Investigating whether this lower efficiency relative to HI is due to less efficient molecular cloud formation, or less efficient cloud collapse, or both, will require sensitive molecular gas observations.
description: 41 pages, 20 figures, 6 tables; accepted for publication in ApJ; several figures are in low resolution due to the size limit here and a high resolution version can be downloaded via http://www.astro.virginia.edu/~cc5ye/ms_bridge20140215.pdf
Laser Cooling of Nuclear Magnons
Creators: name: Xu, Haowei
name: Wang, Guoqing
name: Li, Changhao
name: Wang, Hua
name: Tang, Hao
name: Barr, Ariel Rebekah
name: Cappellaro, Paola
name: Li, Ju
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: The initialization of nuclear spin to its ground state is challenging due to its small energy scale compared with thermal energy, even at cryogenic temperature. In this Letter, we propose an opto-nuclear quadrupolar effect, whereby two-color optical photons can efficiently interact with nuclear spins. Leveraging such an optical interface, we demonstrate that nuclear magnons, the collective excitations of nuclear spin ensemble, can be cooled down optically. Under feasible experimental conditions, laser cooling can suppress the population and entropy of nuclear magnons by more than two orders of magnitude, which could facilitate the application of nuclear spins in quantum information science.
description: 13 pages, 3 figures
Osteological form - SZ13206 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 SZ13206, femlae aged 22-30 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'
title: “Play to Lead” Board Game as A Potential Intervention to Promote Entrepreneurship Competences and Servant Leadership Skills in European Adolescents
Creators: name: Bonaiuto, Flavia
name: Perucchini, Paola
name: Placidi, Valerio
name: Faggioli, Silvia
name: Barroca, Ana
name: Ferot, Celine
name: Netz, Lea
name: Xie, Mei
name: Bonaiuto, Marino
Publisher: name: Psychology Hub
Year: 2023

description: Gaming has been shown to encourage active learning settings that increase interest and motivation, and develop the awareness of engagement and improve various skills. However, there is a dearth of literature on how to nurture young entrepreneurs or leaders through a game. This study investigates the effects of “Play to Lead”, a self-designed board game, on entrepreneurship competences and servant leadership among compulsory schooling students in four European countries (Denmark, Estonia, Italy, and Portugal). A total of 222 adolescents completed a questionnaire measuring entrepreneurship competences (EntreComp) and servant leadership dimensions before and after playing the game. Paired-samples t-tests were used to compare the scores of the participants before and after the game. Pearson correlation tests were conducted to determine the relationship between participants’ game experience (i.e., “game satisfaction” and “game comprehension”) and their EntreComp and servant leadership scores. The results showed that the servant leadership skill scores of the students did not demonstrate significant improvement, and only three items from EntreComp’s “Ideas and Opportunities” and “Into Action” dimensions exhibited a significant enhancement. Besides, participants reported positive feedback in terms of “game satisfaction” and “game comprehension”, which were related to their EntreComp scores. However, these improvements were also contingent on country and age, highlighting the need for replication in diverse samples of adolescents. Nonetheless, this study is the first to demonstrate the potential of a board game in promoting entrepreneurship competences and servant leadership skills among mandatory schooling adolescents, with important implications for education policymakers and curriculum designers seeking to foster these skills in students.
description: Psychology Hub, Vol. 40 No. 2 (2023)
Two-photon Interface of Nuclear Spins Based on the Opto-Nuclear Quadrupolar Effect
Creators: name: Xu, Haowei
name: Li, Changhao
name: Wang, Guoqing
name: Wang, Hua
name: Tang, Hao
name: Barr, Ariel Rebekah
name: Cappellaro, Paola
name: Li, Ju
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: Photons and nuclear spins are two well-known building blocks in quantum information science and technology. Establishing an efficient interface between optical photons and nuclear spins, while highly desirable for hybridizing these two quantum systems, is challenging because the interactions between nuclear spins and the environment are usually weak in magnitude, and there is also a formidable gap between nuclear spin frequencies and optical frequencies. In this work, we propose an opto-nuclear quadrupolar (ONQ) effect, whereby optical photons can be efficiently coupled to nuclear spins, similar to Raman scattering. Compared to previous works, ancilla electron spins are not required for the ONQ effect. This leads to advantages such as applicability in defect-free nonmagnetic crystals and longer nuclear spin coherence time. In addition, the frequency of the optical photons can be arbitrary, so they can be fine-tuned to minimize the material heating and to match telecom wavelengths for long-distance communications. Using perturbation theory and first-principles calculations, we demonstrate that the ONQ effect is stronger by several orders of magnitude than other nonlinear optical effects that could couple to nuclear spins. Based on this rationale, we propose promising applications of the ONQ effect, including quantum memory, quantum transduction, and materials isotope spectroscopy. We also discuss issues relevant to the experimental demonstration of the ONQ effect.
description: 40 pages, 6 figures
Osteological form - SZ14604 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 SZ14604, male aged 30-40 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'
Study of the Open Clusters in Kepler Prime Field
Creators: name: Karataş, Yüksel
name: Çakmak, Hikmet
name: Oralhan, İnci Akkaya
name: Bonatto, Charles
name: Michel, Raúl
name: Netopil, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed study of NGC 6791, NGC 6811, NGC 6819 and NGC 6866, the four open clusters that are located in the Kepler prime field. We use new CCD UBV(RI)KC photometry, which was combined with Gaia EDR3 photometric/astrometric data, to derive the astrophysical parameters with two independent methods - one of them the fitCMD algorithm. Furthermore, we provide among others estimates of the mass and mass function, the cluster structure, derive the cluster orbits, and discuss the cluster dynamics. All objects belong to the older open cluster population (1-7Gyr), are in an advanced dynamical stage with signs of mass segregation, and are located close to the solar circle, but show a large range in respect of radii, member stars or observed cluster mass (100-2000 Msolar). For the three younger objects we were also able to provide photometric metallicity estimates, which confirms their status as clusters with a roughly solar metallicity. The most outstanding object is clearly NGC 6791, a very old cluster with a high metallicity at a distance of about 4.5 kpc from the Sun. We estimate a probable radial migration by about 7 kpc, resulting in a birth position close to the Galactic center.
description: 18 pages, 15 figures and 10 tables. Accepted to publish in Monthly Notices of the Royal Astronomical Society
title: Experienced Hopelessness Among Teachers: Examining Different Personal and Professional Variables
Creators: name: Ghasemi, Farshad
name: Mohammadnia, Zhila
name: Gholami, Zahra
Publisher: name: Psychology Hub
Year: 2023

description: This research aimed to examine teachers’ level of experienced hopelessness with different personal and professional characteristics working in private language institutes in Iran. This survey study with a sample of 297 English as a foreign language (EFL) teachers recruited through a convenient sampling method attempted to understand whether there were significant differences in the hopelessness of teachers regarding their demographic characteristics. To this end, participants completed the Personal Information Form and the Beck Hopelessness Scale (BHS) to collect their personal and professional information and determine the level of experienced hopelessness. The results indicated a mild level of hopelessness experienced by the study sample with different levels of experience in the BHS dimensions. Upon further data analysis, we found no significant differences between teachers’ hopelessness level and their gender and education. However, significant results were found for the effects of teacher age, professional experience, and the educational level they serve on the level of experienced hopelessness. More precisely, older teachers with more than 16 years of professional experience who were teaching advanced adult students were more susceptible to experiencing hopelessness than their younger colleagues with less professional experience. Further implications are discussed.
description: Psychology Hub, Vol. 40 No. 2 (2023)
Supplemental Data.docx
Creators: name: Evans, Louise
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Supplemental data showing, quality control metrics for RNA-sequencing libraries, significantly different genes based on discrete analysis of CD247-/- vs CD247+/+, significantly different genes based on continuous analysis of blood pressure after 21-days of high-salt and absolute number of CD3+, CD11bc+ and CD45R+ cells in CD247-/- and CD247+/+ rats.
Osteological form - SZ14571 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 SZxxxxx, femlae aged 50-65 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'
von Neumann indices and classes of positive definite functions
Creators: name: Jorgensen, Palle
name: Tian, Feng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 47L60, 46N30, 46N50, 42C15, 65R10, Secondary 46N20, 22E70, 31A15, 58J65, 81S25

description: With view to applications, we establish a correspondence between two problems: (i) the problem of finding continuous positive definite extensions of functions $F$ which are defined on open bounded domains $Ω$ in $\mathbb{R}$, on the one hand; and (ii) spectral theory for elliptic differential operators acting on $Ω$, (constant coefficients.) A novelty in our approach is the use of a reproducing kernel Hilbert space $\mathscr{H}_{F}$ computed directly from $\left(Ω,F\right)$, as well as algorithms for computing relevant orthonormal bases in $\mathscr{H}_{F}$.
description: 54 pages, 12 figures
Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1-042953 and YY Sex
Creators: name: Rawat, Nikita
name: Pandey, J. C.
name: Joshi, Arti
name: Potter, Stephen B.
name: Hojaev, Alisher S.
name: De Becker, Michaël
name: Rao, Srinivas M
name: Yadava, Umesh
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 our analysis of new and archived observations of two candidate magnetic cataclysmic variables, namely 1RXS J174320.1-042953 and YY Sex. 1RXS J174320.1-042953 was observed in two distinctive high and low states where a phase shift was seen, which could be due to the changes in the shape, size, and (or) location of the accretion region. We find that its orbital X-ray modulations only persist in the soft (0.3-2.0 keV) energy band, which could be attributed to the photoelectric absorption in the accretion flow. The X-ray spectra exhibit a multi-temperature post-shock region where the hard X-rays are absorbed through a thick absorber with an equivalent hydrogen column of $\sim$7.5 $\times$ 10$^{23}$ cm$^{-2}$, which partially covers $\sim$56 per cent of the emission. No soft X-ray excess was found to be present; however, a soft X-ray emission with a blackbody temperature of $\sim$97 eV describes the spectra. Extensive TESS observations of YY Sex allow us to refine its orbital period to 1.5746 $\pm$ 0.0011 h. We did not find any signature of previously reported spin or beat periods in this system. Furthermore, our new polarimetric observations show clear circular polarization modulated on the orbital period only. Finally, both systems show strong Balmer and He II 4686 A$^\circ$ emission lines in the optical spectra, further indicative of their magnetic nature.
description: 16 pages, 12 figures, and 7 tables (accepted for publication in MNRAS)
The spectra of IceCube Neutrino (SIN) candidate sources -- III. Optical spectroscopy and source characterization of the full sample
Creators: name: Paiano, Simona
name: Falomo, Renato
name: Treves, Aldo
name: Padovani, Paolo
name: Giommi, Paolo
name: Scarpa, Riccardo
name: Bisogni, Susanna
name: Marini, Ester
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A correlation between astrophysical high-energy neutrinos and blazars has been suggested by various authors. In particular, a likely association between IceCube events and intermediate and high-energy peaked BL Lac objects has led to a sample of 47 objects having a high probability of being neutrino sources. In the first paper of this series we reported optical spectroscopy of 17 objects, which together with data taken from the literature covered 80 per cent of the sample. Here we present spectroscopy obtained at large aperture telescopes of a further 17 objects (plus four additional targets), which completes the sample coverage. For twelve objects we are able to determine the redshift (0.07 < z <1.6), while for the others we set a lower limit on it, based on either the robust detection of intervening absorption systems or on an estimation derived from the absence of spectral signatures of the host galaxy. With these new data we expand and reinforce the main results of our previous papers, namely the fact that in terms of their broad-band properties our sources appear to be indistinguishable from the rest of the blazar population and the relatively large (>34 per cent and possibly as high as 80 per cent) fraction of masquerading BL Lac objects, for which the low equivalent width of the emission lines is due to the brightness of the boosted continuum, rather than being an intrinsic property, in our sample.
description: Accepted for publication in MNRAS. 21 pages, 7 Figures, 10 Tables
Discovery of optical emission associated with the supernova remnant G107.5-1.5
Creators: name: Bakis, Hicran
name: Bulut, Gunay
name: Bakis, Volkan
name: Sano, Hidetoshi
name: Sezer, Aytap
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: We present the first results from an imaging and a spectroscopic survey of the optical emission associated with supernova remnant (SNR) G107.5$-$1.5. We discovered optical diffuse and filamentary emission from G107.5$-$1.5 using the 1.5-m and 1-m telescopes. The optical emission from the North East (NE) and North West (NW) regions show the diffuse structure, while the South East (SE) and East (E) regions show filamentary structure. From long-slit spectra, we found [SII]/H$α$ $>$ 0.5 for the SE and E regions, which supports the origin of the emission being from shock-heated gas. The average [SII]/H$α$ ratio is found to be $\sim$0.4 and $\sim$0.3 for the NW and NE regions, respectively, indicating that the optical emission is coming from ionized gas in an HII region. From the ratios of [SII]$λλ$ 6716/6731, we estimate an average electron density of $\sim$2400 cm$^{-3}$ for the NW region, which can be attributed to the dense ionized gas. The average [SII]$λλ$ 6716/6731 ratios are $\sim$1.25 and $\sim$1.15 for the SE and E regions, respectively, which are indicative of low electron density.
description: 12 pages, 11 figures; Accepted for publication in MNRAS
title: Review of Through the Archival Looking Glass: A Reader on Diversity and Inclusion
Creators: name: Bisio, Alexandra M.
Publisher: name: Utah State University
Year: 2020

description: Though the Archival Looking Glass: A Reader on Diversity and Inclusion, edited by Mary A. Caldera and Kathryn M. Neal, brings together a series of essays that challenge the reader to think critically about archival practice and education, evaluate the current demographics of the profession, and actively battle the silences left by history.
Giant zero field cooled spontaneous exchange bias effect in phase separated La1.5Sr0.5CoMnO6
Creators: name: Murthy, J. Krishna
name: Venimadhav, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a giant zero field cooled exchange bias (ZEB) effect (~0.65 T) in La1.5Sr0.5CoMnO6 sample. Magnetic study has revealed a reentrant spin glass ~90 K, phase separation to spin glass and ferromagnetic phases below 50 K and canted antiferromagnetic transition ~10 K. A small conventional exchange bias (CEB) is established with the advent of spontaneous phase separation down to 10 K. Giant ZEB and enhanced CEB effects are found only below 10 K and are attributed to the large unidirectional anisotropy at the interface of isothermally field induced ferromagnetic phase and canted antiferromagnetic background.
description: 15 pgs