cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
First measurement of low intensity fast neutron background from rock at the Boulby Underground Laboratory
Creators: name: Tziaferi, E.
name: Carson, M. J.
name: Kudryavtsev, V. A.
name: Lerner, R.
name: Lightfoot, P. K.
name: Paling, S. M.
name: Robinson, M.
name: Spooner, N. J. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A technique to measure low intensity fast neutron flux has been developed. The design, calibrations, procedure for data analysis and interpretation of the results are discussed in detail. The technique has been applied to measure the neutron background from rock at the Boulby Underground Laboratory, a site used for dark matter and other experiments, requiring shielding from cosmic ray muons. The experiment was performed using a liquid scintillation detector. A 6.1 litre volume stainless steel cell was filled with an in-house made liquid scintillator loaded with Gd to enhance neutron capture. A two-pulse signature (proton recoils followed by gammas from neutron capture) was used to identify the neutron events from much larger gamma background from PMTs. Suppression of gammas from the rock was achieved by surrounding the detector with high-purity lead and copper. Calibrations of the detector were performed with various gamma and neutron sources. Special care was taken to eliminate PMT afterpulses and correlated background events from the delayed coincidences of two pulses in the Bi-Po decay chain. A four month run revealed a neutron-induced event rate of 1.84 +- 0.65 (stat.) events/day. Monte Carlo simulations based on the GEANT4 toolkit were carried out to estimate the efficiency of the detector and the energy spectra of the expected proton recoils. From comparison of the measured rate with Monte Carlo simulations the flux of fast neutrons from rock was estimated as (1.72 +- 0.61 (stat.) +- 0.38 (syst.))*10^(-6) cm^(-2) s^(-1) above 0.5 MeV.
description: 37 pages, 24 figures, to be published in Astroparticle Physics
Constraining the optical depth of galaxies and velocity bias with cross-correlation between kinetic Sunyaev-Zeldovich effect and peculiar velocity field
Creators: name: Ma, Yin-Zhe
name: Gong, Guo-Dong
name: Sui, Ning
name: He, Ping
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We calculate the cross-correlation function $\langle (ΔT/T)(\mathbf{v}\cdot \mathbf{n}/σ_{v}) \rangle$ between the kinetic Sunyaev-Zeldovich (kSZ) effect and the reconstructed peculiar velocity field using linear perturbation theory, to constrain the optical depth $τ$ and peculiar velocity bias of central galaxies with Planck data. We vary the optical depth $τ$ and the velocity bias function $b_{v}(k)=1+b(k/k_{0})^{n}$, and fit the model to the data, with and without varying the calibration parameter $y_{0}$ that controls the vertical shift of the correlation function. By constructing a likelihood function and constraining $τ$, $b$ and $n$ parameters, we find that the quadratic power-law model of velocity bias $b_{v}(k)=1+b(k/k_{0})^{2}$ provides the best-fit to the data. The best-fit values are $τ=(1.18 \pm 0.24) \times 10^{-4}$, $b=-0.84^{+0.16}_{-0.20}$ and $y_{0}=(12.39^{+3.65}_{-3.66})\times 10^{-9}$ ($68\%$ confidence level). The probability of $b>0$ is only $3.12 \times 10^{-8}$ for the parameter $b$, which clearly suggests a detection of scale-dependent velocity bias. The fitting results indicate that the large-scale ($k \leq 0.1\,h\,{\rm Mpc}^{-1}$) velocity bias is unity, while on small scales the bias tends to become negative. The value of $τ$ is consistent with the stellar mass--halo mass and optical depth relation proposed in the previous literatures, and the negative velocity bias on small scales is consistent with the peak background-split theory. Our method provides a direct tool to study the gaseous and kinematic properties of galaxies.
description: 13 pages, 13 figures, 3 tables
Additional file 1 of An integrated model for prognosis in vulvar squamous cell carcinoma
Creators: name: Zhang, Tao
name: Zhu, Yingfan
name: Luo, Jie
name: Li, Juanqing
name: Niu, Shuang
name: Chen, Hao
name: Zhou, Feng
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplementary Material 1
Deep borehole disposal of nuclear waste: US perspective
Creators: name: Brady, Patrick V.
name: Freeze, Geoffrey A.
name: Kuhlman, Kristopher L.
name: Hardin, Ernest L.
name: Sassani, David C.
name: MacKinnon, Robert J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Radioactive waste disposal in deep boreholes may be more "ready" than disposal in mined geologic repositories since mankind has greater experience operating small deep holes - boreholes, than big shallow holes - mines. There are several thousand precedents for constructing >2 km deep boreholes and several hundred precedents for disposing long-lived wastes in boreholes. Borehole disposal is likely to be faster, cheaper, and more flexible than mined disposal, while also offering greater long-term isolation. Isolation would rely on the great depth, water density gradients, and reducing conditions to prevent vertical movement of waste up the borehole.
description: 24 pages, 8 figures
Global, finite energy, weak solutions for the NLS with rough, time-dependent magnetic potentials
Creators: name: Antonelli, Paolo
name: Michelangeli, Alessandro
name: Scandone, Raffaele
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the existence of weak solutions in the space of energy for a class of non-linear Schroedinger equations in the presence of a external rough magnetic potential. Under our assumptions it is not possible to study the problem by means of usual arguments like resolvent techniques or Fourier integral operators, for example. We use a parabolic regularization and we solve the approximating Cauchy problem. This is achieved by obtaining suitable smoothing estimates for the dissipative evolution. The total mass and energy bounds allow to extend the solution globally in time. We then infer sufficient compactness properties in order to produce a global-in-time finite energy weak solution to our original problem.
description: Submitted to Zeitschrift f\"ur angewandte Mathematik und Physik
Does Intra-Abdominal Pressure Exhibit Characteristics Similar to Measures of Physical Fitness?
Creators: name: Dietze-Hermosa, Martin Sterling
Publisher: name: University of Utah
Year: 2019
Subjects: Kinesiology

description: Intra-abdominal pressure (IAP) is the pressure within the abdominal cavity. IAP is routinely studied in the field of urogynecology to comprehend its relation to pelvic floor disorders. In contrast to the potential negative role of high IAP on the pelvic floor, IAP is important for various forms of human performance. Given the disparate thoughts on IAP and its impact on pelvic floor health and sport and exercise performance, better understanding the IAP response in women without pelvic floor disorders during physical activity is warranted. In brief, the purpose of the study was to describe IAP responses during a variety of exercises and physical activities in women without a history of pelvic floor disorders. Our primary aim is to calculate the percentage of maximal for a select group of the activities detailed in a previous study, using the IAP during seated ValSalva (VM) as the maximal capacity. A secondary aim is to characterize the relationship between the relative term of percent of maximal for each activity, and maximal IAP. We hypothesize that there will be an inverse relationship between percentage of maximal for each activity and maximal IAP. In total, the data of 55 women were included in the analysis. Women were aged 20-54 (M 30.38 ± SD 9.43 yrs) and had BMI values between 17.7-28.9 (M 22.4 ± SD 2.63 kg/m2). Participants completed a 1-hour exercise protocol in a human performance laboratory. Pearson r correlation results indicate that all relative values (% maximal of seated VM) were significantly and negatively correlated at (p < 0.001) with seated VM IAP, except for seated shoulder press with 6.9 kg (p 0.023) and 9.1 kg (p 0.557). Our findings support the contention that the IAP response to individual, submaximal activities exhibits a similar relationship to maximal capacity as that observed in well-established measures of fitness, such as muscular strength and oxygen consumption. It is imperative that coaches understand the relationship between IAP and higher intensity efforts during training. With this knowledge, strength and conditioning specialists may adjust training practices in order to limit the likelihood of precipitating pelvic floor symptoms in women.
Supersymmetry Breaking and Duality in SU(N)xSU(N-M) Theories
Creators: name: Poppitz, E.
name: Shadmi, Y.
name: Trivedi, S. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a class of N=1 supersymmetric Yang-Mills theories, with gauge group SU(N)xSU(N - M) and fundamental matter content. Duality plays an essential role in analyzing the nonperturbative infrared dynamics of these models. We find that Yukawa couplings drive these theories into the confining phase, and show how the nonperturbative superpotentials arise in the dual picture. We show that the odd-N, M = 2 models with an appropriate tree-level superpotential break supersymmetry.
description: 12p., LaTeX; some typos corrected, version to appear in Phys. Lett.B
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0297v
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0297v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0297v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
Non-Markov dynamics and phonon decoherence of a double quantum dot charge qubit
Creators: name: Liang, Xian-Ting
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we investigate decoherence times of a double quantum dot (DQD) charge qubit due to it coupling with acoustic phonon baths. We individually consider the acoustic piezoelectric as well as deformation coupling phonon baths in the qubit environment. The decoherence times are calculated with two kinds of methods. One of them is based on the qusiadiabatic propagator path integral (QUAPI) and the other is based on Bloch equations, and two kinds of results are compared. It is shown that the theoretical decoherence times of the DQD charge qubit are shorter than the experimental reported results. It implies that the phonon couplings to the qubit play a subordinate role, resulting in the decoherence of the qubit.
description: 5 pages, 4 figures
The Mathieu conjecture for $SU(2)$ reduced to an abelian conjecture
Creators: name: Müger, Michael
name: Tuset, Lars
Publisher: name: arXiv
Year: 2022
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22C05

description: We reduce the Mathieu conjecture for $SU(2)$ to a conjecture about moments of Laurent polynomials in two variables with single variable polynomial coefficients.
description: Considerably revised and simplified. Now 5 pages. To appear in Indagationes Mathematicae
Formation and Evolution of Planetary Systems: Cold Outer Disks Associated with Sun-like stars
Creators: name: Kim, Jinyoung Serena
name: Hines, Dean C.
name: Backman, Dana E.
name: Hillenbrand, Lynne A.
name: Meyer, Michael R.
name: Rodmann, Jens
name: Moro-Martin, Amaya
name: Carpenter, John M.
name: Silverstone, Murray D.
name: Bouwman, Jeroen
name: Mamajek, Eric E.
name: Wolf, Sebastian
name: Malhotra, Renu
name: Pascucci, Ilaria
name: Najita, Joan
name: Padgett, Deborah L.
name: Henning, Thomas
name: Brooke, Timothy Y.
name: Cohen, Martin
name: Strom, Stephen E.
name: Stobie, Elizabeth B.
name: Engelbracht, Charles W.
name: Gordon, Karl D.
name: Misselt, Karl
name: Morrison, Jane E.
name: Muzerolle, James
name: Su, Kate Y. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``the Formation and Evolution of Planetary Systems'' (FEPS). We also confirm the presence of debris around two other stars. All the stars exhibit infrared emission in excess of the expected photospheres in the 70 micron band, but are consistent with photospheric emission at <= 33 micron. This restricts the maximum temperature of debris in equilibrium with the stellar radiation to T < 70 K. We find that these sources are relatively old in the FEPS sample, in the age range 0.7 - 3 Gyr. Based on models of the spectral energy distributions, we suggest that these debris systems represent materials generated by collisions of planetesimal belts. We speculate on the nature of these systems through comparisons to our own Kuiper Belt, and on the likely planet(s) responsible for stirring the system and ultimately releasing dust through collisions. We further report observations of a nearby star HD 13974 (d =11 pc) that is indistinguishable from a bare photosphere at both 24 micron and 70 micron. The observations place strong upper limits on the presence of any cold dust in this nearby system (L_IR/L_* < 10^{-5.2}).
description: 31 pages, 9 figures, accepted for publication in ApJ
MPEC 2024-U143 : 2024 UD4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 UD4

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.
Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate Na$_2$IrO$_3$
Creators: name: Moreschini, L.
name: Vecchio, I. Lo
name: Breznay, N. P.
name: Moser, S.
name: Ulstrup, S.
name: Koch, R.
name: Wirjo, J.
name: Jozwiak, C.
name: Kim, K. S.
name: Rotenberg, E.
name: Bostwick, A.
name: Analytis, J. G.
name: Lanzara, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Direct experimental investigations of the low-energy electronic structure of the Na$_2$IrO$_3$ iridate insulator are sparse and draw two conflicting pictures. One relies on flat bands and a clear gap, the other involves dispersive states approaching the Fermi level, pointing to surface metallicity. Here, by a combination of angle-resolved photoemission, photoemission electron microscopy, and x-ray absorption, we show that the correct picture is more complex and involves an anomalous band, arising from charge transfer from Na atoms to Ir-derived states. Bulk quasiparticles do exist, but in one of the two possible surface terminations the charge transfer is smaller and they remain elusive.
On a Projection Least Squares Estimator for Jump Diffusion Processes
Creators: name: Halconruy, Hélène
name: Marie, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This paper deals with a projection least squares estimator of the drift function of a jump diffusion process $X$ computed from multiple independent copies of $X$ observed on $[0,T]$. Risk bounds are established on this estimator and on an associated adaptive estimator. Finally, some numerical experiments are provided.
description: 19 pages, 3 figures
Measurement of the B+ production cross section in p-pbar collisions at sqrt(s) = 1960 GeV
Creators: name: CDF Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a new measurement of the $B^+$ meson differential cross section $dσ/d p_T$ at $\sqrt{s}=1960$ GeV. The data correspond to an integrated luminosity of 739pb$^{-1}$ collected with the upgraded CDF detector (CDF II) at the Fermilab Tevatron collider. $B^+$ candidates are reconstructed through the decay $B^+ \to J/ψK^+$, with $J/ψ\to μ^+ μ^-$. The integrated cross section for producing $B^+$ mesons with $p_T \geq 6$ GeV/c and $|y| \leq 1$ is measured to be $2.78 \pm 0.24 μ$b
description: 28 pages, 3 tables, 10 figures Submitted to Phys. Rev. D
Ecological and Social Influences on Orangutan Long Call Behavior and Acoustic Variation
Creators: name: Hoepfner, Amanda Rae
Publisher: name: University of Utah
Year: 2019
Subjects: subject: Biology
subject: Physiology
subject: FOS: Biological sciences

description: Vocalizations are used in multiple contexts for widely different functions. However, the vocalizing individual may convey more information than merely the primary context of the vocalization, including caller identity, dominance status, reproductive status, body condition, etc. Decoding these potential signals could be useful as a noninvasive research tool in conservation. We explore this possibility in the long-distance vocalization of the male orangutan, the long call, and address three questions. When do males call? Researchers must first understand the temporal call patterns of the targeted species to know when and how to study the species. By using a passive acoustic monitoring (PAM) system and direct observation, we were able to study in an unbiased manner when flanged male orangutans call. We discovered that the diurnal orangutan calls more frequently at night than during the activity period. What influences the calling behavior of individuals? Understanding if social or environmental factors influence vocal behavior is necessary to be able to disentangle the information content of vocal signals. While multiple social factors, like association with another individual, do result in a higher long call rate of male orangutans, the dominant influence on vocal behavior was food availability. We discuss how local ecology may determine to which degree each factor can influence vocal behavior. How do vocalizations vary over time? Understanding which aspects of the vocalization remain constant and which vary is key to understanding which acoustic features may encode signals that should not change, such as identity, and signals that may change, such as body condition or dominance status. We found that, while there is inter-individual variation, overall the orangutan long call is not stereotyped, and the most easily measured acoustic features do not allow reliable identification of individuals over long time periods. With current rates of deforestation around the world, conservation managers seek a less labor intensive and noninvasive method to monitor habitat condition. If researchers are able to decode acoustic signals, vocal behavior may provide a more sensitive method to monitor populations and, potentially, habitat condition. This research shows for the highly endangered orangutan clear limitations in this approach, but also highlights that habitat condition may be reflected in the calling behavior.
Secure uniform random number extraction via incoherent strategies
Creators: name: Hayashi, Masahito
name: Zhu, Huangjun
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: To guarantee the security of uniform random numbers generated by a quantum random number generator, we study secure extraction of uniform random numbers when the environment of a given quantum state is controlled by the third party, the eavesdropper. Here we restrict our operations to incoherent strategies that are composed of the measurement on the computational basis and incoherent operations (or incoherence-preserving operations). We show that the maximum secure extraction rate is equal to the relative entropy of coherence. By contrast, the coherence of formation gives the extraction rate when a certain constraint is imposed on eavesdropper's operations. The condition under which the two extraction rates coincide is then determined. Furthermore, we find that the exponential decreasing rate of the leaked information is characterized by Rényi relative entropies of coherence. These results clarify the power of incoherent strategies in random number generation, and can be applied to guarantee the quality of random numbers generated by a quantum random number generator.
Ecology and Conservation of Large Carnivores in a Human-Dominated Landscape in Eastern Anatolia
Creators: name: Chynoweth, Mark William
Publisher: name: University of Utah
Year: 2019
Subjects: Wildlife Conservation
Wildlife Management
Conservation biology
Middle Eastern Studies

description: Conservation of biodiversity is rapidly changing as a result of increased impact of human activity on the natural world. At the beginning of a new epoch - the Anthropocene - the cumulative effect of population growth and natural resource consumption has left no corner of the planet unaffected by humans. Impacts can be observed on a global scale, such as climate change, ocean acidification, and nitrification and also on a local scale including habitat destruction, community composition, and pollution. These impacts are restructuring ecosystems into novel systems that require creative approaches to conserve ecosystem processes and maintain biodiversity. Large mammalian carnivores represent a clade of organisms that has a varied ability to survive in human dominated landscapes. For my dissertation, I examined community structure, movement, and abundance of brown bears (Ursus arctos arctos), gray wolves (Canis lupus), and Caucasian lynx (Lynx lynx dinniki) in a human dominated landscape in eastern Turkey. From 2013-2016, I surveyed for all medium-large mammal species using remote cameras deployed in a fragmented forest patch near Sarikamiş, Turkey. Occupancy estimates reveal a mammal community dominated by large carnivores, humans and livestock, and lacking a natural prey base. During 2011-2016, I collared 28 bears, 11 wolves and 2 lynx and used species-specific seasonal resource selection functions to assess habitat selection patterns. I found that all three species use of habitat varies between seasons and is strongly linked to elevation and slope. By identifying critical habitat for all three species, I have prioritized a specific area for conservation efforts in the future. To estimate the minimum population size of brown bears in my main study area, during 2013-2015, I used scat detection dogs to collect 1,520 bear scat samples for genetic analysis, and using 8 polymorphic microsatellite loci, I identified 27 unique multilocus genotypes and expected heterozygosity of 0.70 as a proxy of genetic diversity. I also conducted opinion surveys in 2014 and combined results with surveys conducted 2006 and 2010 to understand the perspective of the local community about large carnivores. Lastly, I propose a prioritized list of future conservation plans for large carnivore conservation in the human-dominated landscape of Sarikamiş Forest, eastern Anatolia.
Comparing decay rates for black holes and D-branes
Creators: name: Das, Sumit R.
name: Mathur, Samir D.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the leading order (in coupling) rate of emission of low energy quanta from a slightly nonextremal system of 1 and 5 D-branes. We also compute the classical cross-section, and hence the Hawking emission rate, for low energy scalar quanta for the black hole geometry that corresponds to these branes (at sufficiently strong coupling). These rates are found to agree with each other.
description: harvmac, 17 pages; minor typos and a reference corrected
title: AN, Registre des écrous du Châtelet, Y5266, f. p1000702
Creators: name: Claustre, Julie
name: Nationales, Archives
name: Archives Nationales
name: Claustre, Julie
name: ArchivesNationales/J.CLAUSTRE/H.REGAZZI/2020
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Châtelet
subject: registre

description: Registre des écrous du Châtelet, Archives Nationales, Y5266. Numérisation en mode image.
description: Bibliographic citation: Archives Nationales, Registre des écrous du Châtelet, Y5266, f. p1000702
Automating Dislocation Characterization in 3D Dark Field X-ray Microscopy
Creators: name: Huang, Pin-Hua
name: Coffee, Ryan
name: Dresselhaus-Marais, Leora
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mechanical properties in crystals are strongly correlated to the arrangement of 1D line defects, termed dislocations. Recently, Dark field X-ray Microscopy (DFXM) has emerged as a new tool to image and interpret dislocations within crystals using multidimensional scans. However, the methods required to reconstruct meaningful dislocation information from high-dimensional DFXM scans are still nascent and require significant manual oversight (i.e. \textit{supervision}). In this work, we present a new relatively unsupervised method that extracts dislocation-specific information (features) from a 3D dataset ($x$, $y$, $ϕ$) using Gram-Schmidt orthogonalization to represent the large dataset as an array of 3-component feature vectors for each position, corresponding to the weak-beam conditions and the strong-beam condition. This method offers key opportunities to significantly reduce dataset size while preserving only the crystallographic information that is important for data reconstruction.
Relaxation of Pseudo pure states : The Role of Cross-Correlations
Creators: name: Ghosh, Arindam
name: Kumar, Anil
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In Quantum Information Processing by NMR one of the major challenges is relaxation or decoherence. Often it is found that the equilibrium mixed state of a spin system is not suitable as an initial state for computation and a definite initial state is required to be prepared prior to the computation. As these preferred initial states are non-equilibrium states, they are not stationary and are destroyed with time as the spin system relaxes toward its equilibrium, introducing error in computation. Since it is not possible to cut off the relaxation processes completely, attempts are going on to develop alternate strategies like Quantum Error Correction Codes or Noiseless Subsystems. Here we study the relaxation behavior of various Pseudo Pure States and analyze the role of Cross terms between different relaxation processes, known as Cross-correlation. It is found that while cross-correlations accelerate the relaxation of certain pseudo pure states, they retard that of others.
description: 23 pages, 9 figures
IRAS 16293-2422: proper motions, jet precession, the hot core, and the unambiguous detection of infall
Creators: name: Chandler, Claire J.
name: Brogan, Crystal L.
name: Shirley, Yancy L.
name: Loinard, Laurent
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observations of IRAS 16293-2422 using the Submillimeter Array (SMA) at 300 GHz, and the Very Large Array (VLA) at frequencies from 1.5 to 43 GHz. This source was already known to be a binary system with components A and B separated by ~5". The new SMA data now separate source A into two submm continuum components, denoted Aa and Ab. The strongest of these, Aa, peaks between the cm radio sources A1 and A2. Archival VLA data show proper motion of sources A and B of 17 mas/yr, associated with motion of the rho Ophiuchi cloud. We also find relative motion between A1 and A2 which excludes the possibility that they are gravitationally bound. A2 remains stationary relative to source B, and we identify it as the protostar driving the NE-SW CO outflow. A1 is shock-ionized gas where a precessing jet interacts with dense gas. This jet probably drives the E-W CO outflow. The origin of this jet must be located close to A2, and may be the submm source Aa. Thus source A is now shown to comprise three components within 1". Source B, however, is single, exhibits optically-thick dust emission even at 8 GHz, has a high luminosity, and yet shows no sign of outflow, indicating it is probably very young. The SMA spectrum of IRAS 16293-2422 reports the first astronomical identification of many lines at 300 and 310 GHz. The species detected are typical of hot cores, and are mainly associated with source A. We suggest the shock at A1 may explain the enhanced abundances measured, especially of sulphur-bearing molecules. We use the high brightness temperature of the submm dust emission from source B to demonstrate the unambiguous detection of infall by observing redshifted SO (7_7-6_6) absorption against the dust disk.
description: 60 pages, 22 figures, accepted for publication by ApJ
Emergence of Competing Orders and Possible Quantum Spin Liquid in SU(N) Fermions
Creators: name: Yu, Xue-Jia
name: Shi, Shao-Hang
name: Xu, Limei
name: Li, Zi-Xiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the past decades, tremendous efforts have been made towards understanding the exotic physics emerging from competition between various ordering tendencies in strongly correlated systems. Employing state-of-the-art quantum Monte-Carlo simulation, we investigate an interacting SU($N$) fermionic model with varying interaction strength and value of $N$, and unveil the ground-state phase diagram of the model exhibiting a plethora of exotic phases. For small value of $N$, namely $N=2,3$, the ground state is antiferromagnetic (AFM) phase, whereas in the large-$N$ limit, valence bound solid (VBS) order is dominant. For the intermediate value of $N$ such as $N=4$, remarkably, our study reveals distinct VBS orders appear in the weak and strong coupling regimes. More fantastically, the competition between staggered and columnar VBS ordering tendencies gives rise to a Mott insulating phase without spontaneously symmetry breaking (SSB), existing in a large interacting parameter regime, which is consistent with a gapped quantum spin liquid. Our study not only provides a platform to investigate the fundamental physics of quantum many-body systems, but also offers a novel route towards searching for exotic states of matter such as quantum spin liquid in realistic quantum materials.
description: 4.5 pages, 5 figures plus supplementary materials
Radio Evolution of Supernova Remnants Including Non-linear Particle Acceleration: Insights from Hydrodynamic Simulations
Creators: name: Pavlović, Marko Z.
name: Urošević, Dejan
name: Arbutina, Bojan
name: Orlando, Salvatore
name: Maxted, Nigel
name: Filipović, Miroslav D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a model for the radio evolution of supernova remnants (SNRs) obtained by using three-dimensional (3D) hydrodynamic simulations, coupled with nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. We model the radio evolution of SNRs on a global level, by performing simulations for wide range of the relevant physical parameters, such as the ambient density, the supernova (SN) explosion energy, the acceleration efficiency and the magnetic field amplification (MFA) efficiency. We attribute the observed spread of radio surface brightnesses for corresponding SNR diameters to the spread of these parameters. In addition to our simulations of type Ia SNRs, we also considered SNR radio evolution in denser, nonuniform circumstellar environment, modified by the progenitor star wind. These simulations start with the mass of the ejecta substantially higher than in the case of a type Ia SN and presumably lower shock speed. The magnetic field is understandably seen as very important for the radio evolution of SNRs. In terms of MFA, we include both resonant and non-resonant modes in our large scale simulations, by implementing models obtained from first-principles, particle-in-cell (PIC) simulations and non-linear magnetohydrodynamical (MHD) simulations. We test the quality and reliability of our models on a sample consisting of Galactic and extragalactic SNRs. Our simulations give $Σ-D$ slopes between -4 and -6 for the full Sedov regime. Recent empirical slopes obtained for the Galactic samples are around -5, while for the extragalactic samples are around -4.
description: 17 pages, 6 figures, 1 table, corrected typos, added new references and conclusions, 2 new coauthors, accepted for publication in ApJ
Random subspaces for encryption based on a private shared Cartesian frame
Creators: name: Bartlett, Stephen D.
name: Hayden, Patrick
name: Spekkens, Robert W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A private shared Cartesian frame is a novel form of private shared correlation that allows for both private classical and quantum communication. Cryptography using a private shared Cartesian frame has the remarkable property that asymptotically, if perfect privacy is demanded, the private classical capacity is three times the private quantum capacity. We demonstrate that if the requirement for perfect privacy is relaxed, then it is possible to use the properties of random subspaces to nearly triple the private quantum capacity, almost closing the gap between the private classical and quantum capacities.
description: 9 pages, published version
title: 01_1565
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
NSF #1724845 CIF21 DIBBs: PD: Building High-Availability Data Capabilities in Data-Centric Cyberinfrastructure
Creators: name: Haiying Shen
Publisher: name: figshare
Year: 2018
Subjects: subject: Distributed Computing
subject: FOS: Computer and information sciences
subject: 80501 Distributed and Grid Systems

description: This project supports data-related analysis in a wide range of science and engineering applications. It will contribute to the development of scalable data-centric cyberinfrastructure capabilities, to accelerate interdisciplinary and collaborative research. The exascale file system will serve as catalyst for research in data storage architectures, and will enable new data-focused services and capabilities that advance scientific discoveries, collaborations, and innovations. The project addresses a major data challenge common to a range of communities such as social science, economics, and bioengineering, and will provide thorough training and collaborative research opportunities for project participants.Both high performance computing (HPC) clusters and Hadoop clusters use file systems. A Hadoop cluster uses the Hadoop Distributed File System (HDFS) that resides on compute nodes, while an HPC cluster usually uses a remote storage system. Despite years of efforts on research and application development on HPC and Hadoop clusters, the file systems in both types of clusters still face a formidable challenge, that of achieving exascale computing capabilities. The centralized data indexing in HDFS and HPC storage architectures cannot provide high scalability and reliability, and both HDFS and HPC storage architectures have shortcomings such as single point of failure and insufficiently efficient data access. This project builds scalable high-availability data capabilities in data-centric cyberinfrastructure to overcome the shortcomings and create a highly scalable file system with new techniques for distributed load balancing, data replication and consistency maintenance.
Measurement of $\psip$ Radiative Decays
Creators: name: Ablikim, M.
name: Bai, J. Z.
name: Ban, Y.
name: collaboration, BES
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 14 million psi(2S) events accumulated at the BESII detector, we report first measurements of branching fractions or upper limits for psi(2S) decays into gamma ppbar, gamma 2(pi^+pi^-), gamma K_s K^-pi^++c.c., gamma K^+ K^- pi^+pi^-, gamma K^{*0} K^- pi^+ +c.c., gamma K^{*0}\bar K^{*0}, gamma pi^+pi^- p pbar, gamma 2(K^+K^-), gamma 3(pi^+pi^-), and gamma 2(pi^+pi^-)K^+K^- with the invariant mass of hadrons below 2.9GeV/c^2. We also report branching fractions of psi(2S) decays into 2(pi^+pi^-) pi^0, omega pi^+pi^-, omega f_2(1270), b_1^\pm pi^\mp, and pi^0 2(pi^+pi^-) K^+K^-.
description: 5 pages, 4 figures
Quantum corrections of Abelian Duality Transformations
Creators: name: Balog, J.
name: Forgács, P.
name: Horváth, Z.
name: Palla, L.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A modification of the Abelian Duality transformations is proposed guaranteeing that a (not necessarily conformally invariant) $σ$-model be quantum equivalent (at least up to two loops in perturbation theory) to its dual. This requires a somewhat non standard perturbative treatment of the {\sl dual} $σ$-model. Explicit formulae of the modified duality transformation are presented for a special class of block diagonal purely metric $σ$-models.
description: Latex 11 pages; remarks on a free model and references added
Stackelberg Meta-Learning for Strategic Guidance in Multi-Robot Trajectory Planning
Creators: name: Zhao, Yuhan
name: Zhu, Quanyan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Trajectory guidance requires a leader robotic agent to assist a follower robotic agent to cooperatively reach the target destination. However, planning cooperation becomes difficult when the leader serves a family of different followers and has incomplete information about the followers. There is a need for learning and fast adaptation of different cooperation plans. We develop a Stackelberg meta-learning approach to address this challenge. We first formulate the guided trajectory planning problem as a dynamic Stackelberg game to capture the leader-follower interactions. Then, we leverage meta-learning to develop cooperative strategies for different followers. The leader learns a meta-best-response model from a prescribed set of followers. When a specific follower initiates a guidance query, the leader quickly adapts to the follower-specific model with a small amount of learning data and uses it to perform trajectory guidance. We use simulations to elaborate that our method provides a better generalization and adaptation performance on learning followers' behavior than other learning approaches. The value and the effectiveness of guidance are also demonstrated by the comparison with zero guidance scenarios.
Luminosity and mass limits for the progenitor of the type Ic supernova 2004gt in NGC 4038
Creators: name: Maund, Justyn R.
name: Smartt, Stephen
name: Schweizer, Francois
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report our attempts to locate the progenitor of the type Ic SN 2004gt in NGC 4038. We use high resolution HST ACS images of SN 2004gt and have compared them with deep pre-explosion HST WFPC2 F336W, F439W, F555W and F814W images. We identify the SN location on the pre-explosion frames with an accuracy of 5mas. We show that the progenitor is below the detection thresholds of all the pre-explosion images. These detection limits are used to place luminosity and mass limits on the progenitor, by comparing them with stellar evolution tracks on the Hertzsprung-Russell diagram. The progenitor of SN 2004gt seems to be restricted to a low-luminosity high-temperature star, either a single WC star with initial mass $>40M_{\odot}$ or a low mass star in a binary. The pre-explosion data cannot distinguish between the two scenarios.
description: ApJL accepted - 12 pages, 2 figures -minor changes due to referee's comments
title: 03_0038
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Simple bots breed social punishment in humans
Creators: name: Shen, Chen
name: He, Zhixue
name: Shi, Lei
name: Wang, Zhen
name: Tanimoto, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Costly punishment has been suggested as a key mechanism for stabilizing cooperation in one-shot games. However, recent studies have revealed that the effectiveness of costly punishment can be diminished by second-order free riders (i.e., cooperators who never punish defectors) and antisocial punishers (i.e., defectors who punish cooperators). In a two-stage prisoner's dilemma game, players not only need to choose between cooperation and defection in the first stage, but also need to decide whether to punish their opponent in the second stage. Here, we extend the theory of punishment in one-shot games by introducing simple bots, who consistently choose prosocial punishment and do not change their actions over time. We find that this simple extension of the game allows prosocial punishment to dominate in well-mixed and networked populations, and that the minimum fraction of bots required for the dominance of prosocial punishment monotonically increases with increasing dilemma strength. Furthermore, if humans possess a learning bias toward a "copy the majority" rule or if bots are present at higher degree nodes in scale-free networks, the fully dominance of prosocial punishment is still possible at a high dilemma strength. These results indicate that introducing bots can be a significant factor in establishing prosocial punishment. We therefore, provide a novel explanation for the evolution of prosocial punishment, and note that the contrasting results that emerge from the introduction of different types of bots also imply that the design of the bots matters.
description: 12 pages, 4 figures
Outcomes and safety of parenteral nutrition in pediatric patients at King Chulalongkorn Memorial Hospital
Creators: name: Suree Nimitwongsin
name: Sopida Chansurai
name: Achiraya Buddhanoy
name: Nucha Amornrattanachareon
name: Sirinuch Chomtho
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2020
Subjects: Parenteral nutrition, pediatric

description: Chulalongkorn Medical Bulletin, 2, 1, 067-077