cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microbially-induced phosphate starvation response in Arabidopsis thaliana is regulated systemically
Creators: name: Shen, Julia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Plants respond to limiting concentrations of inorganic phosphate (Pi) in the environment by
activating a phosphate starvation response (PSR). PSR encompasses a complex array of
transcriptional responses, manifested in morphological, developmental, and physiological
changes. As PSR was originally described under sterile conditions, the relevance of these
findings to realistic environmental conditions is unknown because plant roots are intimately
associated with microbial communities. These communities and their interactions with the plant
can range from competition to cooperation depending, among other factors, on the nutrient
content of the surrounding soil. In order to study the interplay between induction of PSR and
plant-microbe interactions under limiting Pi conditions, we used a ‘split-root’ assay in which
Arabidopsis thaliana roots were divided across two sides of an agar plate differing in Pi
concentrations and in the inoculation of a 35-member synthetic bacterial community (SynCom).
The induction of PSR in the plant was measured using a reporter system that expresses
β-glucuronidase (GUS) under the control of the IPS1 promoter, which is strongly induced at low
Pi. We found that high Pi in one compartment repressed bacterially-induced PSR in the adjacent
low Pi compartment, indicating that regulation of signaling in bacterially-triggered PSR is
systemic. PSR induced by bacteria has common regulatory and signaling elements with the
canonical PSR that occurs in sterile conditions, and could serve as a model for studying the
mechanisms of PSR induction in nature. Plants grown with bacteria increased Pi accumulation in
Pi-replete media compared to plants grown in sterile conditions. We observed clear bacterial
community shifts between the plant and the agar, and several strains significantly changed in
relative abundance in response to direct and plant-mediated effects of Pi concentration,
suggesting that systemic PSR-related signals are both induced by bacteria and affect them.
$d$-wave superconductivity as a model for diborides apart MgB$_2$
Creators: name: Talantsev, E. F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, Pei et al. (arXiv2105.13250) reported that ambient pressure $β$-MoB$_2$ exhibits a phase transition to $α$-MoB$_2$ (space group: $P6/mmm$) at pressure P~70 GPa and this high-pressure phase is a high-temperature superconductor exhibited $T_c=32 K$ at P~110 GPa. Despite $α$-MoB$_2$ has the same crystalline structure as ambient pressure MgB$_2$2 and the $T_c$'s of $α$-MoB$_2$ and MgB$_2$ are very close, the first principles calculations showed that in $α$-MoB$_2$ the states near the Fermi level, $ε_F$, are dominated by the $d$-electrons of Mo atoms, while in MgB$_2$ the $p$-orbitals of boron atomic sheets dominantly contribute to the states near the $ε_F$. More recently, Hire et al. (arXiv2212.14869) reported that the $P6/mmm$-phase can be stabilized at ambient pressure in $Nb_{1-x}Mo_{x}B_{2}$ solid solutions, and these ternary alloys exhibit $T_c=8 K$. In addition, Pei et al. (Sci. China-Phys. Mech. Astron. 65, 287412 (2022)) showed that compressed WB$_2$ exhibits $T_c=15 K$ at P~121 GPa. Here, we analyzed experimental data reported for $P6/mmm$-phases of $Nb_{1-x}Mo_{x}B_{2}$ (x = 0.25; 1.0) and highly-compressed WB$_2$, and showed that these three phases exhibit $d$-wave superconductivity. We also deduced the gap-to-transition temperature ratio for these three phases. We found that $Nb_{0.75}Mo_{0.25}B_{2}$ exhibits high strength of nonadiabaticity, which is quantified by the ratio of $T_θ/T_F=3.5$, which is by one order of magnitude exceeds the ratio in MgB$_2$, $α$-MoB$_2$, WB$_2$, pnictides, cuprates, and highly-compressed hydrides.
description: 23 pages, 9 figures
From Festival Screens to Comment Feeds: Tracing the Narratives of Vaccine Conversations
Creators: name: Feng, Anne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Vaccine hesitancy is as old as the vaccine itself, yet this issue has been historically difficult for public health measures to effectively address, particularly after the advent of Web 2.0. The most recent wave of vaccine hesitancy comes from a purported link between the measles, mumps, and rubella vaccine and autism, and has led to the release of a documentary-style film entitled "Vaxxed: from Cover-Up to Catastrophe" in 2016. To better understand vaccine rhetoric and its implications for informing future interventions, this project uses a novel analytic framework that identifies key narratives of vaccine hesitancy and traces the ways that they are subsequently disrupted or bolstered in vaccine conversations. Specifically, the narratives of conspiracy, injustice, victimization, and enlightenment that are presented in "Vaxxed" are followed as they are rebutted in mainstream newspaper articles, and then further evoked or contested in the comment sections that follow. Ultimately, this project suggests that public health, physician, and layperson efforts that take into account the sophistication of vaccine skeptic epistemologies and knowledge are better able to disrupt the central narrative of enlightenment to reduce the spread of vaccine hesitancy. Furthermore, increased autistic representation on platforms that engage with the vaccine conversation could undermine victimization narratives and ensure pro-vaccine discourse that respects people with autism.
Referral trajectories in patients with vertigo, dizziness and balance disorders (VDB) and their impact on mobility, social participation and health-related quality of life – Results from the longitudinal multicenter study MobilE-TRA
Creators: name: Katzenberger, Benedict
name: Grill, Eva
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: care pathway
subject: dizziness
subject: health-related quality of life
subject: MobilE-Net
subject: MobilE-TRA
subject: patient trajectories
subject: vertigo

description: Our study, in an explorative and quantitative approach, will aim at extracting existent referral trajectories of visited physicians in an outpatient setting as well as existent clusters of similar referral trajectories in Germany. We will then examine, which patient characteristics do predict the membership of a certain cluster before we finally will analyze the potential influence of cluster membership on the patient’s mobility, social participation and health-related quality of life..
Structural and biochemical basis of activation of an NLR immune receptor network
Creators: name: Contreras, Mauricio Pablo
name: Selvaraj, Muniyandi
name: Madhuprakash, Jogi
name: Pai, Hsuan
name: Toghani, AmirAli
name: Kourelis, Jiorgos
name: Webster, Michael W
name: Kamoun, Sophien
Publisher: name: Zenodo
Year: 2024

description: This poster was presented at the British Society of Plant Pathology meeting held in Oxford University, UK in September 2024.

Abstract

Plant immune systems utilize intracellular nucleotide-binding domain and leucine-rich repeat (NLR) receptors to perceive and respond to pathogen-secreted proteins, termed effectors. In recent years, pivotal insights into NLR activation mechanisms stemmed from structural studies on the inactive and active Arabidopsis NLR ZAR1. To date, our understanding of NLR structure and function has predominantly been shaped by a limited set of “singleton” NLRs that function individually. Structural and biochemical insights on NLRs that activate immunity by working in higher-order configurations, such as pairs or networks, are lacking. We have leveraged a Nicotiana benthamiana protein purification pipeline, which we termed IP-EM, for accelerated structural biology to obtain structural insights on the NRC network — a hierarchical solanaceous NLR immune receptor network that mediates resistance against diverse pathogens. This network links sensor NLRs and cell-surface receptors to helper NLRs of the NRC clade. We report that, unlike ZAR1, NRC helpers exist as homodimers at resting state. Pathogen perception triggers conformational rearrangements in upstream sensors that allow them to signal via their central nucleotide-binding (NB) domain. The sensor NB domain is perceived by NRC homodimers and ultimately leads to their conversion into hexameric resistosomes. The activated NRC resistosomes then accumulate at the host plasma membrane, separate from the sensors that activated them, to initiate immune signaling. This activation mechanism is, biochemically and structurally distinct from the previously published ZAR1 example, highlighting the need to extend NLR mechanistic frameworks beyond the singleton model. As we uncover more NLR structural and functional diversity, revising the way in which we conceptualize NLRs, their domains and their roles in immune activation is crucial.
Call of Duty Propaganda Warfare: How the World’s Most Popular Video Games Are Being Weaponized By Terrorist Organizations in their Video Propaganda
Creators: name: Blair, Austin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Since the Islamic State burst onto the international scene in June 2014 and declared the reestablishment of the Islamic Caliphate, the group has been the center of attention for much of the counterterrorism world. Of particular import have been the high-end propaganda materials produced by the terrorist organization. Much research has focused on the print operations of the Islamic State, with a particular focus on its magazines Dabiq and Rumiyah. Receiving less attention were both Islamic State videos and those of its terrorist rivals and allies. Within this realm, Islamic State and a regional competitor, al Nusra descendent Ha’yat Taḥrīr al Sham (HTS), both have copied video games into their visual propaganda. This study sought to find out how extensive this motif was in terrorist propaganda.This case study of nearly 1,500 videos from Islamic State and Ha’yat Taḥrīr al Sham illuminates this trend and demonstrates that both groups copy video games prolifically. These groups have used video games as actual content, as inspiration, as source material for narratives and themes. They have hijacked a pastime beloved around the world to target a demographic that is primarily global, young, male, and tech savvy. A self-designed analytical framework reveals these groups’ use of video games has followed certain patterns and trends across time and space. These groups’ use of video games in propaganda has improved in sophistication over time and has come to command a significant share of its video propaganda. Combined with relevant video game statistics and pertinent psychological research, this study paints a portrait not only of the target demographic, but also of why the choice to copy video games is a calculated one for terrorist organizations. In total, analysis reveals that HTS and IS have developed comprehensive schemes to mimic and hijack both video games as a motif and their surrounding culture. Since this is a large file with embedded video clips, the best way to view and read this thesis is to download the zip file and open the HTML file "AGB Thesis Final WEB." Mozilla Firefox has been the best browser for this.
NCP: Neural Correspondence Prior for Effective Unsupervised Shape Matching
Creators: name: Attaiki, Souhaib
name: Ovsjanikov, Maks
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We present Neural Correspondence Prior (NCP), a new paradigm for computing correspondences between 3D shapes. Our approach is fully unsupervised and can lead to high-quality correspondences even in challenging cases such as sparse point clouds or non-isometric meshes, where current methods fail. Our first key observation is that, in line with neural priors observed in other domains, recent network architectures on 3D data, even without training, tend to produce pointwise features that induce plausible maps between rigid or non-rigid shapes. Secondly, we show that given a noisy map as input, training a feature extraction network with the input map as supervision tends to remove artifacts from the input and can act as a powerful correspondence denoising mechanism, both between individual pairs and within a collection. With these observations in hand, we propose a two-stage unsupervised paradigm for shape matching by (i) performing unsupervised training by adapting an existing approach to obtain an initial set of noisy matches, and (ii) using these matches to train a network in a supervised manner. We demonstrate that this approach significantly improves the accuracy of the maps, especially when trained within a collection. We show that NCP is data-efficient, fast, and achieves state-of-the-art results on many tasks. Our code can be found online: https://github.com/pvnieo/NCP.
description: NeurIPS 2022, 10 pages, 9 figures
Thermodynamic observables of Mn12-acetate calculated for the full spin-Hamiltonian
Creators: name: Hanebaum, O.
name: Schnack, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: 35 years after its synthesis magnetic observables are calculated for the first time for the molecular nanomagnet Mn12-acetate using a spin-Hamiltonian that contains all spins. Starting from a very advanced DFT parameterization [Phys. Rev. B 89, 214422] we evaluate magnetization and specific heat for this anisotropic system of 12 manganese ions with a staggering Hilbert space dimension of 100,000,000 using the Finite-Temperature Lanczos Method.
description: 6 pages, 7 figures
Stabilized Access to Marginal Knowledge in the Health Professional Classroom
Creators: name: Campbell, Kathryn Laura Gouzoules
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Graduate-level education in the health sciences builds from and is dependent upon knowledge supplied by prerequisite coursework. Such previously learned information may be stored well in memory without being readily accessible for application to facilitate new learning. Stored, but not retrievable information is termed “marginal knowledge”; psychology laboratory research has demonstrated that multiple-choice questions can be used to stabilize access to or “reactivate”  marginal knowledge, even without feedback. Our study assessed whether this phenomenon was reproducible in an authentic classroom setting. One hundred and forty-five student pharmacists enrolled in the first-year Pharmacy Bridging Course (PBC) participated in this study, first completing a pre-course assessment comprising fill-in-the-blank questions about material covered in undergraduate prerequisites, but not to be covered in PBC. Students were then randomized to one of two groups to study three of the six lowest performance topics per the pre-assessment. After one week of PBC, students completed an interim assessment including study questions provided as fill-in-the-blank and then in multiple-choice format, without feedback. At the completion of PBC two weeks later, students repeated the pre-course assessment as a final exam.  The interim multiple-choice test conferred better final exam performance on questions that students did not answer correctly on the pre-test, relative to the control condition (i.e., not taking the interim test; d = 1.03). In addition, the benefit of an interim multiple-choice question was significantly greater when students answered it correctly relative to incorrectly (d = 0.54). Interestingly, even incorrect responses on the interim test conferred a performance advantage over not taking the interim test (d = 0.61). Our study provides initial data to support that a multiple-choice test (even without feedback) in a genuine health professional classroom can produce a sufficient stimulus to stabilize marginal knowledge as demonstrated by improved retrieval of previously assessed material. We also know that this effect persists for at least two weeks as evidenced by the final exam performance; tracking this effect over longer follow-up periods provides an opportunity for further investigation.
Making your blog FAIR
Creators: name: Athanasia Monika Mowinckel
Publisher: name: Zenodo
Year: 2024
Subjects: r
FAIR
Zenodo
DOI
GitHub

description: Dr. Mowinckel's blog: I have subscribed to [Heidi Seibold](https://heidiseibold.com/)'s newsletter for a good while, she has some really great reflections on data, data literacy, programming and open-science. Reading her [August newsletter](https://heidiseibold.ck.page/posts/making-my-newsletter-fair) about making it FAIR ((Findable, Accessible, Interoperable, and Reusable)) she it was really an eye-opener about my own content and archiving it. Reading her [August newsletter](https://heidiseibold.ck.page/posts/making-my-newsletter-fair) about making it FAIR was really an eye-opener about my own content and archiving it. I know there are old links to my posts that are broken. I have used Hugo's internal way of making sure this does not happen, but this needs me to actually remember all links I might have used... I might not have detected all the broken links. And, I might change my home-page url at some point, and that will be really hard to do anything about.
Traces of the new $a_0(1780)$ resonance in the $J/ψ\to ϕK^+K^-(K^0\bar{K}^0)$ reaction
Creators: name: Abreu, Luciano M.
name: Wang, Wen-Fei
name: Oset, Eulogio
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the $J/ψ\to ϕK \bar K$ decay, looking for differences in the production rates of $K^+ K^-$ or $K^0 \bar K^0$ in the region of 1700-1800 MeV, where two resonances appear dynamically generated from the vector-vector interaction. Two resonances are known experimentally in that region, the $f_0(1710)$ and a new resonance reported by the BABAR and BESIII collaborations. The $K \bar K$ should be produced with $I=0$ in that reaction, but due to the different $K^{*0}$ and $K^{*+}$ masses some isospin violation appears. Yet, due to the large width of the $K^*$, the violation obtained is very small and the rates of $K^+ K^-$ or $K^0 \bar K^0$ production are equal within $5\%$. However, we also find that due to the step needed to convert two vectors into $K \bar K$, a shape can appear in the $K \bar K$ mass distribution that can mimic the $a_0$ production around the $K^* \bar K^*$ threshold, and is simply a threshold effect.
description: 13 pages; 11 figures
First-principles study of FeSe epitaxial films on SrTiO3
Creators: name: Liu, Kai
name: Gao, Miao
name: Lu, Zhong-Yi
name: Xiang, Tao
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of high temperature superconductivity in FeSe films on SrTiO3 substrate has inspired great experimental and theoretical interests. First-principles density functional theory calculations, which have played an important role in the study of bulk iron-based superconductors, also participate in the investigation of interfacial superconductivity. In this article, we review the calculation results on the electronic and magnetic structures of FeSe epitaxial films, emphasizing on the interplay between different degrees of freedom, such as charge, spin, and lattice vibrations. Furthermore, the comparison between FeSe monolayer and bilayer films on SrTiO3 is discussed.
description: invited review
MPEC 2023-Q103 : 2023 QW3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QW3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Mental Health, Psychosocial Functioning, and Health-Related Quality of Life of Children, Adolescents, and Adults with Bladder Exstrophy, Cloacal Exstrophy, and Epispadias: A Scoping Review Protocol
Creators: name: Baker, Zoë
name: Montano, Zorash
name: Kysh, Lynn
name: Ko, Joan
name: Vasquez, Evalynn
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Medical Specialties
subject: Mental and Social Health
subject: Urology
subject: bladder exstrophy
subject: cloacal exstrophy
subject: epispadias

description: The objective of this scoping review is to summarize the current literature on the mental health status, health-related quality of life, and psychosocial functioning of children, adolescents, and adults diagnosed with bladder exstrophy, cloacal exstrophy, and epispadias. This manuscript provides the protocol for our scoping review.
Thermal Conductivity in the Frustrated Two-Leg Spin-Ladder System BiCu2PO6
Creators: name: Nagasawa, H.
name: Kawamata, T.
name: Naruse, K.
name: Ohno, M.
name: Matsuoka, Y.
name: Sudo, H.
name: Hagiya, Y.
name: Fujita, M.
name: Sasaki, T.
name: Koike, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have measured temperature and magnetic-field dependences of the thermal conductivity of single crystals of the frustrated two-leg spin-ladder system BiCu2PO6 in magnetic fields up to 14 T. It has been found that the temperature dependence of the thermal conductivity along every principal crystallographic axis shows two peaks in zero field but that the magnitude of the thermal conductivity along the b-axis parallel to spin ladders, $κ$b, is significantly larger than those of the thermal conductivity along the a-axis, $κ$a, and along the c-axis, $κ$c, at high temperatures above 7 K. These results suggest that the thermal conductivity due to spins probably exists only in $κ$b. Furthermore, it has been found that both magnetic-field dependences of $κ$a and $κ$b at 3 K show kinks at ~ 7 T and ~ 10 T, where the spin state may change.
description: 4 pages, 2 figures
The t-channel Charged Higgs Production in Single Top Events at LHC
Creators: name: Hashemi, Majid
name: Zebarjad, Seyyed Mohammad
name: Bakhshalizadeh, Hossein
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, the t-channel charged Higgs production at LHC is studied. Production process is a t-channel single top event with charged Higgs exchange. Therefore the signal is similar with Standard Model single top production in terms of the final state. In the first step, the signal cross section is calculated and compared to the other main production processes which are used for a heavy charged Higgs search at LHC, i.e., pp -> tbH- and pp -> H+ -> tb. In the next step, an event generation and analysis is applied on signal and background events, in order to estimate the signal significance. The signal cross section is typically smaller than the associated production (tbH-) and resonance production (tb) by a factor of 10-3 and ranges from 10 fb to 1 fb for charged Higgs mass from 200 to 500 GeV at tanbeta = 50. Due to the small cross section of signal events and large SM background, the signal significance is small even after a dedicated kinematic analysis and selection of events, however, tanbeta values above 120 can be excluded at an integrated luminosity of 3000 fb-1.
MPEC 2023-Q104 : 2023 QX3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QX3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
In-Situ Measurement of Vadose Zone Hydraulic Properties
Creators: name: Hinshaw, Sarah
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: In order to create in situ characteristic curves, the first step is to fully understand each parameter individually. In this study, we analyze infiltration experiments in two different land treatments. We present a method for in-situ estimates of effective hydraulic properties that contribute to characteristic curves by capturing hysteretic soil-water retention properties at the plot scale. We apply this method to two different forest treatments to investigate the impact of land-use disturbances on soil-hydraulic properties. Volumetric water content is monitored in a well-studied catchment over periods of wetting and drying. Time series of water content over wetting and drying periods are compared in two land treatment types in order to make inferences about how disturbance impacts soil’s response to infiltration scenarios. The goal of this effort is to contribute to growing body of research that examines and improves PTFs, which are perhaps more widely used than they ought to be in hydrologic models.
On the magnetic fields of Be/X-ray pulsars in the Small Magellanic Cloud
Creators: name: Ikhsanov, N. R.
name: Mereghetti, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the possibility to explain the properties of the Be/X-ray pulsars observed in the Small Magellanic Cloud within the magnetic levitation accretion scenario. This implies that their X-ray emission is powered by a wind-fed accretion onto a neutron star (NS) which captures matter from a magnetized stellar wind. The NS in this case is accreting matter from a non-keplerian magnetically levitating disc (ML-disc) which is surrounding its magnetosphere. This allows us to explain the observed periods of the pulsars in terms of spin equilibrium without the need of invoking dipole magnetic fields outside the usual range ~ 10^11- 10^13 G inferred from cyclotron features of Galactic high mass X-ray binaries. We find that the equilibrium period of a NS, under certain conditions, depends strongly on the magnetization of the stellar wind of its massive companion and, correspondingly, on the magnetic field of the massive companion itself. This may help to explain why similar NSs in binaries with similar properties rotate with different periods yielding a large scatter of periods of the accretion-powered pulsar observed in SMC and our galaxy.
description: 6 pages, 1 figure, Published in MNRAS 454, 3760-3765 (2015)
Horizontal Wavenumber Spectra of Vertical Vorticity and Horizontal Divergence of Mesoscale Dynamics in the Mesosphere and Lower Thermosphere Using Multistatic Specular Meteor Radar Observations
Creators: name: Poblet, Facundo L.
name: Chau, Jorge L.
name: Conte, J. Federico
name: Avsarkisov, Victor
name: Vierinen, Juha
name: Charuvil Asokan, Harikrishnan
Publisher: name: Malden, Mass. : American Geophysical Union
Year: 2022
Subjects: subject: correlation function
subject: divergence
subject: mesoscales
subject: meteor radar
subject: MLT
subject: vorticity
subject: 530
subject: 550

description: Specular meteor radars (SMRs) have significantly contributed to the understanding of wind dynamics in the mesosphere and lower thermosphere (MLT). We present a method to estimate horizontal correlations of vertical vorticity (Qzz) and horizontal divergence (P) in the MLT, using line-of-sight multistatic SMRs velocities, that consists of three steps. First, we estimate 2D, zonal, and meridional correlation functions of wind fluctuations (with periods less than 4 hr and vertical wavelengths smaller than 4 km) using the wind field correlation function inversion (WCFI) technique. Then, the WCFI's statistical estimates are converted into longitudinal and transverse components. The conversion relation is obtained by considering the rotation about the vertical direction of two velocity vectors, from an east-north-up system to a meteor-pair-dependent cylindrical system. Finally, following a procedure previously applied in the upper troposphere and lower stratosphere to airborne wind measurements, the longitudinal and transverse spatial correlations are fitted, from which Qzz, P, and their spectra are directly estimated. The method is applied to a special Spread spectrum Interferometric Multistatic meteor radar Observing Network data set, obtained over northern Germany for seven days in November 2018. The results show that in a quasi-axisymmetric scenario, P was more than five times larger than Qzz for the horizontal wavelengths range given by ∼50–400 km, indicating a predominance of internal gravity waves over vortical modes of motion as a possible explanation for the MLT mesoscale dynamics during this campaign.
Search-Based Task and Motion Planning for Hybrid Systems: Agile Autonomous Vehicles
Creators: name: Ajanović, Zlatan
name: Regolin, Enrico
name: Shyrokau, Barys
name: Ćatić, Hana
name: Horn, Martin
name: Ferrara, Antonella
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: To achieve optimal robot behavior in dynamic scenarios we need to consider complex dynamics in a predictive manner. In the vehicle dynamics community, it is well know that to achieve time-optimal driving on low surface, the vehicle should utilize drifting. Hence many authors have devised rules to split circuits and employ drifting on some segments. These rules are suboptimal and do not generalize to arbitrary circuit shapes (e.g., S-like curves). So, the question "When to go into which mode and how to drive in it?" remains unanswered. To choose the suitable mode (discrete decision), the algorithm needs information about the feasibility of the continuous motion in that mode. This makes it a class of Task and Motion Planning (TAMP) problems, which are known to be hard to solve optimally in real-time. In the AI planning community, search methods are commonly used. However, they cannot be directly applied to TAMP problems due to the continuous component. Here, we present a search-based method that effectively solves this problem and efficiently searches in a highly dimensional state space with nonlinear and unstable dynamics. The space of the possible trajectories is explored by sampling different combinations of motion primitives guided by the search. Our approach allows to use multiple locally approximated models to generate motion primitives (e.g., learned models of drifting) and effectively simplify the problem without losing accuracy. The algorithm performance is evaluated in simulated driving on a mixed-track with segments of different curvatures (right and left). Our code is available at https://git.io/JenvB
description: Accepted to the journal Engineering Applications of Artificial Intelligence; 19 pages, 18 figures, code: https://git.io/JenvB. arXiv admin note: text overlap with arXiv:1907.07825
Collective Emotions and Social Resilience in the Digital Traces After a Terrorist Attack
Creators: name: Garcia, David
name: Rimé, Bernard
Publisher: name: Open Science Framework
Year: 2022

description: After collective traumas like natural disasters and terrorist attacks, members of concerned communities experience intense emotions and talk profusely about them. While these exchanges resemble simple emotional venting, Durkheim’s theory of emotional effervescence postulates that these collective emotions lead to higher levels of solidarity. We present the first large-scale test of this theory through the longitudinal analysis of digital traces captured in Twitter after the Paris terrorist attacks of November, 2015. We find a collective negative emotional response followed by a marked increase in the use of lexical indicators related to social resilience, in particular social processes, prosocial behavior, and shared values. These lexical indicators were higher in the months following the attacks for the individuals who participated to a higher degree in the collective emotion. Together, our findings support the conclusion that collective traumas can fuel collective emotions that coexist with social resilience processes, as described by Durkheim.
A note on the admissibility of complex BTZ metrics
Creators: name: Basile, Ivano
name: Campoleoni, Andrea
name: Raeymaekers, Joris
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform a nontrivial check of Witten's recently proposed admissibility criterion for complex metrics. We consider the `quasi-Euclidean' metrics obtained from continuing the BTZ class of metrics to imaginary time. Of special interest are the overspinning metrics, which are smooth in this three-dimensional context. Their inclusion as saddle points in the gravitational path integral would lead to puzzling results in conflict with those obtained using other methods. It is therefore encouraging that the admissibility criterion discards them. For completeness, we perform an analysis of smoothness and admissibility for the family of quasi-Euclidean BTZ metrics at all values of the mass and angular momentum.
description: 17 pages, 2 figures. V2: matches published version
THE STUDY STAGES OF THE LIFE AND STATE ACTIVITY OF AMIR TIMUR IN FRANCE IN THE 16TH CENTURY
Creators: name: Israilov, Nodir
Publisher: name: Zenodo
Year: 2024

description: This article highlights the study of Amir Temur’s life and statesmanship in France in the 16th century. Factors that led to the study of Amir Temur’s activities in the field of statehood by orientalists such as Jean Bodin and Louis Le Roy were included in this study.
'Roids and Race: A content analysis of Barry Bonds and Roger Clemens media coverage, 2009-2013
Creators: name: Coley, Benjamin A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: This study is a content analysis comparing the media coverage of Barry Bonds and Roger
Clemens during their respective steroid scandals from 2009-2013. Articles from the New York Times, Wall Street Journal, Los Angeles Times, Chicago Tribune, and USA Today were
examined. The research sought to answer whether there were differences in terms of prominence, racial descriptions, and tone. After five key elements were analyzed – headlines, the article, lead paragraphs, quote selection, and closing paragraphs – it was concluded that the coverage was equitable, with little evidence of discrimination.
Decoherence and thermalization of Unruh-DeWitt detector in arbitrary dimensions
Creators: name: Xu, Hao
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the decoherence and thermalization of an Unruh-DeWitt detector linearly coupled to the free massless scalar field in flat spacetime of arbitrary dimensions ($d\geq 2$). The initial state of the detector is chosen to be a pure state consisting of a linear superposition of ground and excited states, and we calculate the time evolution of reduced density matrix of the detector. Using perturbation method, we analytically derive the transition rate of the detector (the rate of change of the diagonal elements in the density matrix) and the decoherence rate (the rate of change of the off-diagonal elements in the density matrix). We find that the results are not the same in odd and even dimensional spacetimes, but the unitarity of the qubit is preserved in both cases. The real part of the decoherence rate is related to the transition rate, while the imaginary part may contain different forms of divergence terms in different dimensions due to the temporal order product operator and the singularities of the Wightman function for quantum field theory. We derive the recurrence formula to obtain the divergence terms in each dimension and analyze the renormalization problem.
description: 20 pages; v2: minor corrections, accepted by JHEP
Anelastic-like nature of the rejuvenation of metallic glasses by cryogenic thermal cycling
Creators: name: Costa, Miguel B.
name: Londoño, Juan J.
name: Blatter, Andreas
name: Hariharan, Avinash
name: Gebert, Annett
name: Carpenter, Michael A.
name: Greer, A. Lindsay
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2022
Subjects: subject: Anelasticity
subject: Bulk metallic glasses
subject: Mechanical properties
subject: Structural relaxation
subject: Thermal cycling
subject: 670

description: Cryogenic thermal cycling (CTC) is an effective treatment for improving the room-temperature plasticity and toughness in metallic glasses. Despite considerable attention to characterizing the effects of CTC, they remain poorly understood. A prominent example is that, contrary to expectation, the stored energy in a metallic glass first rises, and then decreases, as CTC progresses. In this work, CTC is applied to bulk metallic glasses based on Pd, Pt, Ti, or Zr. The effects on calorimetric and mechanical properties are evaluated. Critically, CTC-induced effects, at whatever stage, are found to decay over about one week at room temperature after CTC, returning the properties to those of the as-cast glass. A model is proposed for CTC-induced effects, treating them as analogous to the accumulation of anelastic strain. The implications for analysis of existing data, and for future research on CTC effects, are highlighted.
A Search for Substellar Companions to the Two Nearest Brown Dwarf Systems
Creators: name: Melso, N. D.
name: Kaldon, K. M.
name: Luhman, K. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: WISE J104915.57-531906.1 A+B and WISE J085510.83-071442.5 were recently discovered as the third and fourth closest known systems to the Sun, respectively (2.0 and 2.3 pc). The former consists of a L8+T0.5 binary and the latter is a probable Y dwarf and is the coldest known brown dwarf (~250 K). We present a search for common proper motion companions to these brown dwarfs using multi-epoch mid-infrared images from the Spitzer Space Telescope. We have also obtained near-infrared adaptive optics images of WISE J104915.57-531906.1 A+B with the Very Large Telescope to search for companions at smaller separations than reached by Spitzer. No new companions are detected in either system. At projected separations of 25-420" (50-840 AU) for WISE J104915.57-531906.1 A+B and 4-420" (9-970 AU) for WISE J085510.83-071442.5, the Spitzer images are sensitive to companions with M_4.5<21.6 and 21.9, respectively, which correspond to masses of >=1 M_Jup for ages of >=1 Gyr and temperatures of >=150 K. The detection limit in the adaptive optics images of WISE J104915.57-531906.1 A+B is dH~10 at 3-15" (6-30 AU), or >=7 M_Jup for >=1 Gyr.
description: Astronomical Journal, in press
MPEC 2023-Q105 : 2023 QY3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QY3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Phase Transformation Induced by High Pressure Torsion in the High-Entropy Alloy CrMnFeCoNi
Creators: name: Chulist, Robert
name: Pukenas, Aurimas
name: Chekhonin, Paul
name: Hohenwarter, Anton
name: Pippan, Reinhard
name: Schell, Norbert
name: Skrotzki, Werner
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: high pressure torsion
subject: high-entropy alloy
subject: microstructure
subject: phase transformation
subject: strength
subject: texture
subject: 600

description: The forward and reverse phase transformation from face-centered cubic (fcc) to hexagonal close-packed (hcp) in the equiatomic high-entropy alloy (HEA) CrMnFeCoNi has been investigated with diffraction of high-energy synchrotron radiation. The forward transformation has been induced by high pressure torsion at room and liquid nitrogen temperature by applying different hydrostatic pressures and large shear strains. The volume fraction of hcp phase has been determined by Rietveld analysis after pressure release and heating-up to room temperature as a function of hydrostatic pressure. It increases with pressure and decreasing temperature. Depending on temperature, a certain pressure is necessary to induce the phase transformation. In addition, the onset pressure depends on hydrostaticity; it is lowered by shear stresses. The reverse transformation evolves over a long period of time at ambient conditions due to the destabilization of the hcp phase. The effect of the phase transformation on the microstructure and texture development and corresponding microhardness of the HEA at room temperature is demonstrated. The phase transformation leads to an inhomogeneous microstructure, weakening of the shear texture, and a surprising hardness anomaly. Reasons for the hardness anomaly are discussed in detail.
Spiritual Resistance:  The Submission and Defiance of Evangelical Slaves in the Antebellum South
Creators: name: Parrish, Jackson
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: This project details how slaves living in the Antebellum American South gained exposure to evangelical Christianity, made it their own, and elected to resist or remain submissive because of their faith.
Thermal Conductivity in the Triangular-Lattice Antiferromagnet Ba3CoSb2O9
Creators: name: Naruse, K.
name: Kawamata, T.
name: Ohno, M.
name: Matsuoka, Y.
name: Sudo, H.
name: Nagasawa, H.
name: Hagiya, Y.
name: Sasaki, T.
name: Koike, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have measured the thermal conductivity in the ab-plane, $κ$ab, and along the c-axis, $κ$c, of single crystals of the S = 1/2 triangular-lattice antiferromagnet Ba3CoSb2O9 in zero field and magnetic fields. In zero field, it has been found that both $κ$ab and $κ$c show a similar broad peak around 40 K, suggesting that the thermal conductivity due to phonons is dominant in this compound and that the mean free path of phonons is suppressed so much by strong magnetic-fluctuations due to the magnetic frustration. It has also been found that both $κ$ab and $κ$c show a kink at the antiferromagnetic transition temperature TN. In magnetic fields parallel to the ab-plane up to 14 T, magnetic-field dependences of both $κ$ab and $κ$c at temperatures below and above TN have been found to be understood taking into account the phonon-magnon scattering in the so-called 120$°$ structure phase and the up-up-down (UUD) phase, while the minima of $κ$ab and $κ$c observed in the middle of the UUD phase have not been understood. This suggests the occurrence of some change of the magnetic state in the middle of the UUD phase.
description: 5 pages, 3 figures
PT and PG with Israeli Arab and Jewish students
Creators: name: Ashur, Yarden
name: Eyal, Tal
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Arts and Humanities

description: In this study, Jewish and Arab participants (predictors) will be asked to choose a number of items they would like to ask another person (the target) in order to more accurately predict his/her responses to a series of political statements. In light of previous studies in which participants chose to ask only a third of the questions, we would like to investigate the reasons for the number of questions they choose.
Evaluating the feasibility and acceptability of an adapted fencing intervention in breast cancer surgery post-operative care: the RIPOSTE pilot randomized trial
Creators: name: Hasnaoui, Sabrine
name: Van Hoye, Aurélie
name: Soudant, Marc
name: Rotonda, Christine
name: Freitas, Andréia Carvalho de
name: Peiffert, Didier
name: Delattre, Cécile
name: Raft, Julien
name: Temperelli, Margaux
name: Allado, Edem
name: Hily, Oriane
name: Chenuel, Bruno
name: Hornus-Dragne, Dominique
name: Omorou, Abdou Y.
name: Poussel, Mathias
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Background: Adapted physical activity programs have shown promising results in reducing the physical, social and psychological side effects associated with breast cancer, but the extent to which they can be effectively adopted, implemented and maintained is unclear. The aim of this study is to use the framework to guide the planning and evaluation of programs according to the 5 following keys: Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) framework to evaluate a fencing program under the French acronym RIPOSTE (Reconstruction, Image de soi, Posture, Oncologie, Santé, Thérapie, Escrime) literally in English (Reconstruction, Self-Image, Posture, Oncology, Health, Therapy, Fencing). This program is an innovative intervention focused on improving the quality of life (QoL) of breast cancer surgery patients through fencing.
Methods: A convergent mixed methods pilot study was conducted to preliminary evaluate the different RE-AIM dimension of the pilot program. Twenty-four participants who have just undergone surgery for invasive breast cancer were randomly allocated in two groups: one group started immediately after their inclusion (Early RIPOSTE group) and the other started 3 months following their inclusion (Delayed RIPOSTE group). Participants answered a questionnaire at inclusion and at the end of the program on QoL, shoulder functional capacity, fatigue, anxiety-depression and physical activity.
Results: RIPOSTE program was able to reach mainly young and dynamic participants, attracted by the originality of fencing and keen to improve their physical condition. Regarding effectiveness, our results suggest a trend to the improvement of QoL, shoulder functional capacity, fatigue and anxiety-depression state, even without any significant differences between the Early RIPOSTE group and the Delayed RIPOSTE group.
Discussions: The cooperation, exchanges and cohesion within the group greatly facilitated the adoption of the program, whereas interruptions during school vacations were the main barriers. The intervention was moderately well implemented and adherence to the protocol was suitable.
Conclusion: RIPOSTE is an acceptable and effective program for involving breast cancer survivors in physical activity, that needs to be tested at a larger scale to investigate its effectiveness, but has the potential to be transferred and scaled up worldwid