cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hardcore bosons in a zig-zag optical superlattice
Creators: name: Dhar, Arya
name: Mishra, Tapan
name: Pai, Ramesh V.
name: Mukerjee, Subroto
name: Das, B. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study a system of hard-core bosons at half-filling in a one-dimensional optical superlattice. The bosons are allowed to hop to nearest and next-nearest neighbor sites producing a zig-zag geometry and we obtain the ground state phase diagram as a function of microscopic parameters using the finite-size density matrix renormalization group (FS-DMRG) method. Depending on the sign of the next-nearest neighbor hopping and the strength of the superlattice potential the system exhibits three different phases, namely the bond-order (BO) solid, the superlattice induced Mott insulator (SLMI) and the superfluid (SF) phase. When the signs of both hopping amplitudes are the same (the "unfrustrated" case), the system undergoes a transition from the SF to the SLMI at a non-zero value of the superlattice potential. On the other hand, when the two amplitudes differ in sign (the "frustrated" case), the SF is unstable to switching on a superlattice potential and also exists only up to a finite value of the next nearest neighbor hopping. This part of the phase diagram is dominated by the BO phase which breaks translation symmetry spontaneously even in the absence of the superlattice potential and can thus be characterized by a bond order parameter. The transition from BO to SLMI appears to be first order.
description: 6 pages, 11 figures
Complex geometry of moment-angle manifolds
Creators: name: Panov, Taras
name: Ustinovsky, Yuri
name: Verbitsky, Misha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Moment-angle manifolds provide a wide class of examples of non-Kaehler compact complex manifolds. A complex moment-angle manifold Z is constructed via certain combinatorial data, called a complete simplicial fan. In the case of rational fans, the manifold Z is the total space of a holomorphic bundle over a toric variety with fibres compact complex tori. In general, a complex moment-angle manifold Z is equipped with a canonical holomorphic foliation F which is equivariant with respect to the (C*)^m-action. Examples of moment-angle manifolds include Hopf manifolds of Vaisman type, Calabi-Eckmann manifolds, and their deformations. We construct transversely Kaehler metrics on moment-angle manifolds, under some restriction on the combinatorial data. We prove that any Kaehler submanifold (or, more generally, a Fujiki class C subvariety) in such a moment-angle manifold is contained in a leaf of the foliation F. For a generic moment-angle manifold Z in its combinatorial class, we prove that all subvarieties are moment-angle manifolds of smaller dimension. This implies, in particular, that the algebraic dimension of Z is zero.
description: 24 pages, LaTeX, minor changes in version 3
Two new quaternary copper bismuth sulfide halides: CuBi2S3Cl and CuBi2S3Br as candidates for copper ion conductivity
Creators: name: Remy-Speckmann, Ina
name: Bredow, Thomas
name: Lerch, Martin
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: bismuth
subject: copper
subject: mechanochemical synthesis
subject: quantum-chemical calculations
subject: Rietveld refinement
subject: sulfide halide

description: Two new copper bismuth sulfide halides, CuBi2S3Cl and CuBi2S3Br, were synthesized by a two-step process of ball milling followed by annealing. Both compounds are obtained as dark grey powders and crystallize in the monoclinic space group C2/m with lattice parameters a = 12.9458(11) Å, b = 3.9845(3) Å, c = 9.1024(8) Å and β = 91.150(3)° for the sulfide chloride and a = 13.3498(8) Å, b = 4.1092(2) Å, c = 9.4173(6) Å and β = 90.322(4)° for the sulfide bromide. Also known for related compounds, the copper atoms are strongly disordered. Quantum-chemical calculations suggest that modelling the structure with fixed copper positions does not satisfactorily describe all structural features, which insinuates copper ion mobility at elevated temperatures.
Trends in Ultracool Dwarf Magnetism. I. X-Ray Suppression and Radio Enhancement
Creators: name: Williams, P. K. G.
name: Cook, B. A.
name: Berger, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Although ultracool dwarfs (UCDs) are now known to generate and dissipate strong magnetic fields, a clear understanding of the underlying dynamo is still lacking. We have performed X-ray and radio observations of seven UCDs in a narrow range of spectral type (M6.5-M9.5) but spanning a wide range of projected rotational velocities (v sin i ~ 3-40 km/s). We have also analyzed unpublished archival Chandra observations of four additional objects. All of the newly-observed targets are detected in the X-ray, while only one is detected in the radio, with the remainder having sensitive upper limits. We present a database of UCDs with both radio and X-ray measurements and consider the data in light of the so-called Güdel-Benz relation (GBR) between magnetic activity in these bands. Some UCDs have very bright radio emission and faint X-ray emission compared to what would be expected for rapid rotators, while others show opposite behavior. We show that UCDs would still be radio-over-luminous relative to the GBR even if their X-ray emission were at standard rapid-rotator "saturation" levels. Recent results from Zeeman-Doppler imaging and geodynamo simulations suggest that rapidly-rotating UCDs may harbor a bistable dynamo that supports either a stronger, axisymmetric magnetic field or a weaker, non-axisymmetric field. We suggest that the data can be explained in a scenario in which strong-field objects obey the GBR while weak-field objects are radio-over-luminous and X-ray-under-luminous, possibly because of a population of gyrosynchrotron-emitting coronal electrons that is continuously replenished by low-energy reconnection events.
description: 24 pages, 12 figures; ApJ in press; v2: accepted version, including new figure
A reduction of proof complexity to computational complexity for $AC^0[p]$ Frege systems
Creators: name: Krajicek, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: Computational Complexity (cs.CC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 03F20, 68Q17

description: We give a general reduction of lengths-of-proofs lower bounds for constant depth Frege systems in DeMorgan language augmented by a connective counting modulo a prime $p$ (the so called $AC^0[p]$ Frege systems) to computational complexity lower bounds for search tasks involving search trees branching upon values of maps on the vector space of low degree polynomials over the finite filed with $p$ elements.
description: the final version accepted to the Proc.AMS
Impact of nuclear effects on the extraction of neutrino oscillation parameters
Creators: name: Coloma, P.
name: Huber, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the possible impact of nuclear effects and final state interactions on the determination of the oscillation parameters due to mis-reconstruction of non-quasi-elastic events as quasi-elastic events at low energies. We analyze a $ν_μ$ disappearance experiment using a water Čerenkov detector. We find that, if completely ignored in the fit, nuclear effects can induce a significant bias in the determination of atmospheric oscillation parameters, particularly for the atmospheric mixing angle. Even after inclusion of a near detector a bias in the determination of the atmospheric mixing angle comparable to the statistical error remains.
description: 5 pages, 3 figures. Minor changes, references added. Version accepted in Phys. Rev. Lett
Cooperative Relaying in Wireless Networks under Spatially and Temporally Correlated Interference
Creators: name: Crismani, Alessandro
name: Schilcher, Udo
name: Brandner, Günther
name: Toumpis, Stavros
name: Bettstetter, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We analyze the performance of an interference-limited, decode-and-forward, cooperative relaying system that comprises a source, a destination, and $N$ relays, placed arbitrarily on the plane and suffering from interference by a set of interferers placed according to a spatial Poisson process. In each transmission attempt, first the transmitter sends a packet; subsequently, a single one of the relays that received the packet correctly, if such a relay exists, retransmits it. We consider both selection combining and maximal ratio combining at the destination, Rayleigh fading, and interferer mobility. We derive expressions for the probability that a single transmission attempt is successful, as well as for the distribution of the transmission attempts until a packet is transmitted successfully. Results provide design guidelines applicable to a wide range of systems. Overall, the temporal and spatial characteristics of the interference play a significant role in shaping the system performance. Maximal ratio combining is only helpful when relays are close to the destination; in harsh environments, having many relays is especially helpful, and relay placement is critical; the performance improves when interferer mobility increases; and a tradeoff exists between energy efficiency and throughput.
幼儿视网膜单细胞转录组研究
Creators: name: 王浩宇(Haoyu Wang)
Publisher: name: CNGB
Year: 2023
Subjects: Raw sequence reads
Monoisolate

description: 单细胞转录组测序技术作为当下最热门的方向之一，对人类从单细胞水平上理解生物体各组织细胞成分构成以及细胞生理学动态变化都有着重要的作用。随着2016年人类细胞图谱计划的提出，单细胞转录组方向逐渐火热起来。本项目拟利用10X Genomics单细胞转录组技术，对正常幼儿视网膜组织进行单细胞转录组测序，构建出幼儿视网膜的单细胞图谱。
The direct enstrophy cascade of two-dimensional soap film flows
Creators: name: Rivera, Mike
name: Aluie, Hussein
name: Ecke, Robert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We investigate the direct enstrophy cascade of two-dimensional decaying turbulence in a flowing soap film channel. We use a coarse-graining approach that allows us to resolve the nonlinear dynamics and scale-coupling simultaneously in space and in scale. From our data, we verify an exact relation due to Eyink (1995) between traditional 3rd-order structure function and the enstrophy flux obtained by coarse-graining. We also present experimental evidence that enstrophy cascades to smaller (larger) scales with a 60% (40%) probability, in support of theoretical predictions by Merilees & Warn (1975) which appear to be valid in our flow owing to the ergodic nature of turbulence. We conjecture that their kinematic arguments break down in quasi-laminar 2D flows. We find some support for these ideas by using an Eulerian coherent structure identification technique, which allows us to determine the effect of flow topology on the enstrophy cascade. A key finding is that "centers" are inefficient at transferring enstrophy between scales, in contrast to "saddle" regions which transfer enstrophy to small scales with high efficiency.
description: 20 pages, 19 figures. Added a new Fig. 12, added a discussion on ergodicity in relation to the Merilees & Warn predictions, and made minor changes to the presentation
Trends in Ultracool Dwarf Magnetism. II. The Inverse Correlation Between X-ray Activity and Rotation as Evidence for a Bimodal Dynamo
Creators: name: Cook, B. A.
name: Williams, P. K. G.
name: Berger, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of magnetic activity indicators in solar-type stars exhibit a relationship with rotation with an increase until a "saturation" level and a moderate decrease in activity in the very fastest rotators ("supersaturation"). While X-ray data have suggested that this relationship is strongly violated in ultracool dwarfs (UCDs; spectral type >M7), the limited number of X-ray detections has prevented firm conclusions. In this paper, we analyze the X-ray activity-rotation relation in 38 ultracool dwarfs. Our sample represents the largest catalog of X-ray active ultracool dwarfs to date, including seven new and four previously-unpublished Chandra observations presented in a companion paper. We identify a substantial number of rapidly-rotating UCDs with X-ray activity extending two orders of magnitude below the expected saturation level and measure a "supersaturation"-type anticorrelation between rotation and X-ray activity. The scatter in UCD X-ray activity at a fixed rotation is ~3 times larger than that in earlier-type stars. We discuss several mechanisms that have been proposed to explain the data, including centrifugal stripping of the corona, and find them to be inconsistent with the observed trends. Instead, we suggest that an additional parameter correlated with both X-ray activity and rotation is responsible for the observed effects. Building on the results of Zeeman-Doppler imaging of UCD magnetic fields and our companion study of radio/X-ray flux ratios, we argue that this parameter is the magnetic field topology, and that the large scatter in UCD X-ray fluxes reflects the presence of two dynamo modes that produce distinct topologies.
description: 11 pages, 5 figures, 3 tables; ApJ in press
MPEC 2023-M23 : 2023 LH2
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 LH2

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.
Bayesian analyses of multiple random change points in survival models with applications to clinical trials
Creators: name: Xu, Jianbo
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biophysics
Medicine
Biotechnology
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified
Computational Biology

description: Single and multiple random change points (RCPs) in survival analysis have arisen naturally in oncology trials, where the time to hazard rate change differs from one subject to another. Recently, Xu formulated and discovered important properties of these survival models using a frequentist approach, allowing us to estimate the hazard rates, rate parameters of the exponential distributions for the RCPs, expected survival and hazard functions. However, these methods did not provide an estimation of the uncertainty or the confidence intervals for the parameters and their differences or ratios. Therefore, statistical inferences were not able to be drawn on the parameters and their comparisons. To solve this issue, this article implements a Gibbs sampler method to estimate the above parameters and the differences or ratios alongside the 100(1 − α)% highest posterior density (HPD) intervals calculated from Chen–Shao’s algorithm. The estimated rate parameters from the methods in Xu serve as empirical values in the Gibbs sampler method. Thus, formal statistical inferences can now be readily drawn. Simulation studies demonstrate that the proposed methods yield robust estimates, with the samples from the marginal posterior distributions converging rapidly and exhibiting favorable behavior. The 95% HPD intervals also demonstrate excellent coverage probabilities. This proposed method has a multitude of applications in clinical trials such as efficient clinical trial design and sample size adjustment based on the estimated parameter values at interim analyses.
Is modern science evolving in the wrong direction?
Creators: name: Jaffe, Klaus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Digital Libraries (cs.DL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The present politically correct consensus is that increased exchange of scientific insight, knowledge, practitioners and skills at the global level brings significant benefits to all. The quantifiable scientometric changes during the last decade, however, suggest that many areas of knowledge are evolving in the opposite direction. Despite an increase during the last decade of the numbers of journals and academic articles published, increases in the number of citations the published articles receive, and increases in the number of countries participating; important parts of the academic activity are becoming more nationalistic. In addition, international collaboration is decreasing in several subject areas, and in several geographic regions. For example, countries in Asia are becoming scientifically more isolated; and academics working in the humanities in all the regions of the world are very nationalistic and are becoming more so. The precise consequences of this dynamics are difficult to predict, but it certainly will have reverberations beyond academia. The tendency of the humanities to become more provincial will certainly not help in reducing international conflicts arising from poor understanding of cultural differences and of diverging sociopolitical world views. More and better data on these trends should give us a better understanding for eventually improving academic policies worldwide. Keywords: International Collaboration, National, Science, Humanities, Policy
Sparse Packetized Predictive Control for Networked Control over Erasure Channels
Creators: name: Nagahara, Masaaki
name: Quevedo, Daniel E.
name: Ostergaard, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: We study feedback control over erasure channels with packet-dropouts. To achieve robustness with respect to packet-dropouts, the controller transmits data packets containing plant input predictions, which minimize a finite horizon cost function. To reduce the data size of packets, we propose to adopt sparsity-promoting optimizations, namely, ell-1-ell-2 and ell-2-constrained ell-0 optimizations, for which efficient algorithms exist. We derive sufficient conditions on design parameters, which guarantee (practical) stability of the resulting feedback control systems when the number of consecutive packet-dropouts is bounded.
description: IEEE Transactions on Automatic Control, Volume 59 (2014), Issue 7 (July) (to appear)
Interplay of force constants in the lattice dynamics of disordered alloys : An ab-initio study
Creators: name: Chouhan, Rajiv K.
name: Alam, Aftab
name: Ghosh, Subhradip
name: Mookerjee, Abhijit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A reliable prediction of interatomic force constants in disordered alloys is an outstanding problem. This is due to the need for a proper treatment of multisite (atleast pair) correlation within a random environment. The situation becomes even more challenging for systems with large difference in atomic size and mass. We propose a systematic density functional theory (DFT) based study to predict the ab-initio force constants in random alloys. The method is based on a marriage between special quasirandom structures (SQS) and the augmented space recursion (ASR) to calculate phonon spectra, density of states (DOS) etc. bcc TaW and fcc NiPt alloys are considered as the two distinct test cases. Ta-Ta (W-W) bond distance in the alloy is predicted to be smaller (larger) than those in pure Ta (W), which, in turn, yields stiffer (softer) force constants for Ta (W). Pt-Pt force constants in the alloy, however, are predicted to be softer compared to Ni-Ni, due to a large bond distance of the former. Our calculated force constants, phonon spectra and DOS are compared with experiments and other theoretical results, wherever available. Correct trend of present results for the two alloys pave a path for further future studies in more complex alloy systems.
Dynamics of Snapping Beams and Jumping Poppers
Creators: name: Pandey, Anupam
name: Moulton, Derek E.
name: Vella, Dominic
name: Holmes, Douglas P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the dynamic snapping instability of elastic beams and shells. Using the Kirchhoff rod and Föppl-von Kármán plate equations, we study the stability, deformation modes, and snap-through dynamics of an elastic arch with clamped boundaries and subject to a concentrated load. For parameters typical of everyday and technological applications of snapping, we show that the stretchability of the arch plays a critical role in determining not only the post-buckling mode of deformation but also the timescale of snapping and the frequency of the arch's vibrations about its final equilibrium state. We show that the growth rate of the snap-through instability and its subsequent ringing frequency can both be interpreted physically as the result of a sound wave in the material propagating over a distance comparable to the length of the arch. Finally, we extend our analysis of the ringing frequency of indented arches to understand the `pop' heard when everted shell structures snap-through to their stable state. Remarkably, we find that not only are the scaling laws for the ringing frequencies in these two scenarios identical but also the respective prefactors are numerically close; this allows us to develop a master curve for the frequency of ringing in snapping beams and shells.
Interaction effects on dynamical localization in driven helium
Creators: name: Jörder, Felix
name: Zimmermann, Klaus
name: Rodriguez, Alberto
name: Buchleitner, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dynamical localization prevents driven atomic systems from fast fragmentation by hampering the excitation process. We present numerical simulations within a collinear model of microwave-driven helium Rydberg atoms and prove that dynamical localization survives the impact of electron-electron interaction, even for doubly excited states in the presence of fast autoionization. We conclude that the effect of electron-electron repulsion on localization can be described by an appropriate rescaling of the atomic level density and of the external field with the strength of the interaction.
description: 5 pages, 4 figures
Robust estimation on a parametric model via testing
Creators: name: Sart, Mathieu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We are interested in the problem of robust parametric estimation of a density from $n$ i.i.d. observations. By using a practice-oriented procedure based on robust tests, we build an estimator for which we establish non-asymptotic risk bounds with respect to the Hellinger distance under mild assumptions on the parametric model. We show that the estimator is robust even for models for which the maximum likelihood method is bound to fail. A numerical simulation illustrates its robustness properties. When the model is true and regular enough, we prove that the estimator is very close to the maximum likelihood one, at least when the number of observations $n$ is large. In particular, it inherits its efficiency. Simulations show that these two estimators are almost equal with large probability, even for small values of $n$ when the model is regular enough and contains the true density.
description: Published at http://dx.doi.org/10.3150/15-BEJ706 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Properties of induced subgraphs of random graphs with given degree sequences
Creators: name: SOUTHWELL, ANGUS JOHN
Publisher: name: Monash University
Year: 2022
Subjects: Combinatorics and discrete mathematics (excl. physical combinatorics)

description: In this thesis we study induced subgraphs of uniformly random graphs with given degree sequences. We study the degree sequence of these subgraphs and use this to study their properties. In particular, we focus on the component structure of this induced subgraph. Under certain restrictions, we characterise the threshold for when induced subgraph is connected, or when the subgraph contains a giant component.
The scalar pion form factor in two-flavor lattice QCD
Creators: name: Gülpers, Vera
name: von Hippel, Georg
name: Wittig, Hartmut
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the scalar form factor of the pion using two dynamical flavors of non-perturbatively $\mathcal{O}(a)$-improved Wilson fermions, including both the connected and the disconnected contribution to the relevant correlation functions. We employ the calculation of all-to-all propagators using stochastic sources and a generalized hopping parameter expansion. From the form factor data at vanishing momentum transfer, $Q^2=0$, and two non-vanishing $Q^2$ we obtain an estimate for the scalar radius $\left^π_{_{\rm S}}$ of the pion at one value of the lattice spacing and for five different pion masses. Using Chiral Perturbation Theory at next-to-leading order, we find $\left^π_{_{\rm S}}=0.635\pm0.016$ fm$^2$ at the physical pion mass (statistical error only). This is in good agreement with the phenomenological estimate from $ππ$-scattering. The inclusion of the disconnected contribution is essential for achieving this level of agreement.
description: 15 pages, 10 pdf figures, uses revtex4-1; version to appear in PRD
Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides
Creators: name: Liu, Yaohua
name: Cuellar, F. A.
name: Sefrioui, Z.
name: Freeland, J. W.
name: Fitzsimmons, M. R.
name: Leon, C.
name: Santamaria, J.
name: Velthuis, S. G. E. te
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a strong effect of interface-induced magnetization on the transport properties of magnetic tunnel junctions consisting of ferromagnetic manganite La$_{0.7}$Ca$_{0.3}$MnO$_{3}$ and insulating cuprate PrBa$_{2}$Cu$_{3}$O$_{7}$. Contrary to the typically observed steady increase of the tunnel magnetoresistance with decreasing temperature, this system exhibits a sudden anomalous decrease at low temperatures. Interestingly, this anomalous behavior can be attributed to the competition between the positive spin polarization of the manganite contacts and the negative spin-filter effect from the interface-induced Cu magnetization.
description: 5 pages, 4 figures, with supplemental materials (2 figures). Physical Review Letters, in press
Figures showing Americans' views about global warming by generation, demographics, and politics from Marlon, J., Neyens, E., Everett-Lane, B., Rosenthal, S., Maibach, E., Leiserowitz, A. (2022). How do climate change views differ by generation? Generations Journal, 46(2), 1-11.
Creators: name: Marlon, Jennifer
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470103
subject: Environmental communication

description: It is often assumed that younger Americans are more engaged with the issue of climate change than older Americans. Nationally representative survey data conducted from April 2020 and September 2021, however, indicate that differences in partisanship and race are more pronounced than differences in age. A notable exception is younger Republicans. Younger Republicans, including Gen Z, Millennials, and Gen X, are more likely than Boomers and older Republicans to think that global warming is happening and caused by human activities, that there is a strong scientific consensus, and to support policies to address it.
A Notion of Robustness for Cyber-Physical Systems
Creators: name: Rungger, Matthias
name: Tabuada, Paulo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: I.2.8; I.2.2

description: Robustness as a system property describes the degree to which a system is able to function correctly in the presence of disturbances, i.e., unforeseen or erroneous inputs. In this paper, we introduce a notion of robustness termed input-output dynamical stability for cyber-physical systems (CPS) which merges existing notions of robustness for continuous systems and discrete systems. The notion captures two intuitive aims of robustness: bounded disturbances have bounded effects and the consequences of a sporadic disturbance disappear over time. We present a design methodology for robust CPS which is based on an abstraction and refinement process. We suggest several novel notions of simulation relations to ensure the soundness of the approach. In addition, we show how such simulation relations can be constructed compositionally. The different concepts and results are illustrated throughout the paper with examples.
ละครวิทยุข้ามสื่อแบบมีส่วนร่วมด้วยการมีปฏิสัมพันธ์ในการสื่อสารแบบกลุ่มผ่านสื่อสังคมออนไลน์ เพื่อส่งเสริมสุขภาพที่ดีของคนทำงานออฟฟิศ
Creators: name: กุลกนิษฐ์ ทองเงา
Publisher: name: สถาบันเทคโนโลยีนวัตกรรมทางการศึกษาและการวิจัยแห่งสุวรรณภูมิ (สนว.)
Year: 2022
Subjects: ละครวิทยุข้ามสื่อแบบมีส่วนร่วม
การปฏิสัมพันธ์ในการสื่อสารแบบกลุ่ม
สื่อสังคมออนไลน์
สุขภาพที่ดีของคนทำงานออฟฟิศ

description: วารสารนวัตกรรมการศึกษาและการวิจัย, 6, 3, 608-623
title: ТИПЫ РЕДАКЦИОННОЙ ПОЛИТИКИ МЕДИА В ОТНОШЕНИИ ФЕМИНИТИВОВ
Creators: name: Кобяков, А.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Автор анализирует особенности влияния различной редакционной политики медиа на выбор лексических средств для номинации женщин. Выделается три основных подхода к использованию существительных мужского и женского рода, выражению семантического значения пола в форме согласуемых слов.
A Particle-Water Based Model for Water Retention Hysteresis
Creators: name: Gan, Yixiang
name: Maggi, Federico
name: Buscarnera, Giuseppe
name: Einav, Itai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A particle-water discrete element based approach to describe water movement in partially saturated granular media is presented and tested. Water potential is governed by both capillary bridges, dominant at low saturations, and the pressure of entrapped air, dominant at high saturations. The approach captures the hysteresis of water retention during wetting and drainage by introducing the local evolution of liquid-solid contact angles at the level of pores and grains. Extensive comparisons against experimental data are presented. While these are made without the involvement of any fitting parameters, the method demonstrates relative high success by achieving a correlation coefficient of at least 82%, and mostly above 90%. For the tested materials with relatively mono-disperse grain size, the hysteresis of water retention during cycles of wetting and drainage has been shown to arise from the dynamics of solid-liquid contact angles as a function of local liquid volume changes.
description: 10 pages, 8 figures
สหกรณ์สีขาวด้วยธรรมาภิบาลเพื่อสร้างความเชื่อมั่นในระบบสหกรณ์ในยุคความปกติถัดไป
Creators: name: กฤษฎา ฉิมพลีวัฒน์
Publisher: name: สถาบันเทคโนโลยีนวัตกรรมทางการศึกษาและการวิจัยแห่งสุวรรณภูมิ (สนว.)
Year: 2022
Subjects: สหกรณ์
สหกรณ์สีขาว
ธรรมาภิบาล
ความเชื่อมั่นในระบบสหกรณ์

description: วารสารนวัตกรรมการศึกษาและการวิจัย, 3, 6, 624-636
Alliance and psychological distress RI-CLPM
Creators: name: Hirshberg, Matthew J
name: Davidson, Richard
name: Goldberg, Simon
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences

description: This registration provides data, analysis code, and materials associated with the following publication: Goldberg, S. B., Jiwani, Z., Bolt, D. M., Riordan, K. M., Davidson, R. J., & Hirshberg, M. J. (in press). Evidence for bidirectional, cross-lagged associations between alliance and psychological distress in an unguided mobile health intervention. Clinical Psychological Science.
ACADEMIC INERTIA, SELF-DETERMINED MOTIVATIONS, AND ACADEMIC ENGAGEMENT: A VALIDATION OF PSYCHOLOGICAL MOMENTUM THEORY
Creators: name: Li, Tao
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Educational psychology

description: The notion of momentum has received significant attention from sports psychologists. Recently, however, some researchers have introduced it to educational contexts and developed a psychological momentum perspective toward academic motivations. Different from other motivation theories, the psychological momentum theory mainly builds on Newtonian physics. It stresses the analogy between physical concepts (mass, inertia, and momentum) and psychological processes. While such a background brings several novel and appealing insights into academic motivations, as the theory is still new to the field, more validation work, such as those exploring its convergence and divergence with other established theories, is needed. Using self-determination theory as a complementary theory, the current study explored the convergence between the two theories by examining the association between self-determined motivations and two states of academic inertia (i.e., low-momentum state inertia [LMSI] and high momentum state inertia [HMSI]). The study also examined the two theories’ divergence by investigating how the two states of inertia predict academic engagement over and above self-determined motivations. Two hundred and six undergraduate students from a Midwestern university participated in this study. Regarding convergence, results provided mixed support for the hypothesis. No significant association was obtained between HMSI and all motivations; however, LMSI was negatively associated with intrinsic motivation and the relatively autonomy index but positively associated with amotivation (all to a weak-to-moderate extent). Regarding divergence, results demonstrated that inertia explained a moderate-yet-meaningful amount of variation in academic engagement, even after self-determined motivations are controlled for. Taken together, the results suggested the promise of PMT as a motivation theory. Based on the findings, implications and limitations of the study were further discussed.
 
Electromagnetic M1 transition strengths from inelastic proton scattering: The cases of 48Ca and 208Pb
Creators: name: Birkhan, J.
name: Matsubara, H.
name: von Neumann-Cosel, P.
name: Pietralla, N.
name: Ponomarev, V. Yu.
name: Richter, A.
name: Tamii, A.
name: Wambach, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Inelastic proton scattering at energies of a few hundred MeV and extreme forward angles selectively excites the isovector spin-flip M1 (IVSM1) resonance. A method based on isospin symmetry is presented to extract its electromagnetic transition strength from the (p,p') cross sections. It is applied to 48Ca, a key case for an interpretation of the quenching phenomenon of the spin-isospin response, and leads to a M1 strength consistent with an older (e,e') experiment excluding the almost two times larger value from a recent (γ,n) experiment. Good agreement with electromagnetic probes is observed in 208Pb suggesting the possibility to extract systematic information on the IVSM1 resonance in heavy nuclei.
description: 6 pages, 4 figures
Luminosity Spectrum Reconstruction at Linear Colliders
Creators: name: Poss, Stéphane
name: Sailer, André
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A good knowledge of the luminosity spectrum is mandatory for many measurements at future e+e- colliders. As the beam-parameters determining the luminosity spectrum cannot be measured precisely, the luminosity spectrum has to be measured through a gauge process with the detector. The measured distributions, used to reconstruct the spectrum, depend on Initial State Radiation, cross-section, and Final State Radiation. To extract the basic luminosity spectrum, a parametric model of the luminosity spectrum is created, in this case the spectrum at the 3 TeV Compact Linear Collider (CLIC). The model is used within a reweighting technique to extract the luminosity spectrum from measured Bhabha event observables, taking all relevant effects into account. The centre-of-mass energy spectrum is reconstructed within 5% over the full validity range of the model. The reconstructed spectrum does not result in a significant bias or systematic uncertainty in the exemplary physics benchmark process of smuon pair production.
description: Version accepted by EPJC. Minor changes
A temporal steering inequality
Creators: name: Chen, Yueh-Nan
name: Li, Che-Ming
name: Lambert, Neill
name: Chen, Shin-Liang
name: Ota, Yukihiro
name: Chen, Guang-Yin
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum steering is the ability to remotely prepare different quantum states by using entangled pairs as a resource. Very recently, the concept of steering has been quantified with the use of inequalities, leading to substantial applications in quantum information and communication science. Here, we highlight that there exists a natural temporal analogue of the steering inequality when considering measurements on a single object at different times. We give non-trivial operational meaning to violations of this temporal inequality by showing that it is connected to the security bound in the BB84 protocol and thus may have applications in quantum communication.
description: 8 pages, 5 figures, to appear in PRA
title: Urartian linchpins, Urartian copper alloys. Considering the analysis of corroded »bronze« finds
Creators: name: Ankner, Dietrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Aus zwei urartäischen Tempelschätzen des 9./8. Jahrhunderts v. Chr. wurden 43 vermeintliche »Bronzen« an einem Messpunkt analysiert. Es traten nicht zu erwartende Zinkanteile bis zu 8 % auf, weitere elf Achsnägel wiesen partiell Zink auf. Analysen an mehreren Messpunkten korrodierter Objekte führten zu
deutlich verschiedenen Ergebnissen – bei Untersuchungen an korrodierten Oberflächen sind immer nur angenäherte Resultate zu erwarten. Der urartäische Handwerker verwendete für besondere Zwecke häufig spezielle Legierungen. So enthalten Möbelbauteile fast immer Zink, Gefäße hingegen nicht. Urartäische Kupferlegierungen sind häufig stark legiert: Neben dem üblichen Zinn treten oft Arsen und Antimon sowie das »neue« Zink auf. Die Legierungen werden in Bezug gesetzt zu den im östlichen Anatolien vorkommenden Kupfererzen. Eine erstaunliche Experimentierfreude und Geschicklichkeit der urartäischen Metallurgen fällt ins Auge.
description: 43 presumed »bronze« finds from two Urartian temple treasures of the 9th / 8th century BC were analysed from one point of measurement. Unexpectedly, proportions of up to 8 % zinc were found, a further eleven linchpins contained zinc in part. Moreover, analyses of several measurements on a single corroded object
led to plainly different results. Thus, investigations of corroded finds always yield only approximate results. The Urartian craftsmen often used special alloys for particular purposes. Thus, parts of furniture almost always contain zinc, vessels on the other hand do not. Urartian copper alloys are often very mixed: apart
from the usual tin, there often occur arsenic and antimony, as well as the »new« zinc. The alloys correspond to the copper-ores occurring in eastern Anatolia. One can recognize an amazing enthusiasm for experimentation and skill on the part of the Urartian metal-workers.
title: The La Tène period cemetery of Kutná Hora-Karlov (okr. Kutná Hora / CZ). A rescue excavation from 1988-1989
Creators: name: Valentová, Jarmila
name: Sankot, Pavel
Publisher: name: University Library Heidelberg
Year: 2013

description: Das latènezeitliche Gräberfeld in der Vorstadt Karlov in Kutná Hora befindet sich in einem Gebiet, in dem ältere Grabbefunde relativ dicht entlang der Flüsse Vrchlice und Klejnárka konzentriert sind. Mit seinen 49, ursprünglich wahrscheinlich etwa 55 Bestattungen, ist das fast vollständig ausgegrabene Areal ein Modell für die damaligen Gräberfelder. Gemäß den anthropologischen Analysen überwiegen die Gräber Erwachsener, darunter solche mit Waffen sowie reich ausgestattete Frauengräber. Diese datieren ab der Phase Lt B1bc, die Waffengräber treten verstärkt in Stufe Lt B2 auf. Aufgegeben wurde das Gräberfeld vor dem Beginn der Stufe Lt C1. Neben der Erfassung von Funden und Befunden sowie von Hinweisen auf die Be handlung
der Beigaben und Gräber ermöglichte es die Untersuchung dieses Fundorts auch, neue Erkennt nisse über die Entwicklung der Struktur des eigentlichen Gräberfeldes und die Mechanismen der Anwen dung heimischer sowie exogener Elemente zu gewinnen, die mit der Dynamik der damaligen historischen Entwicklung zusammenhängen. Dabei werden die Ergebnisse der archäologischen Analysen mit tels moderner Metho den der Erforschung des anthropologischen Materials mittels Isotopenanalysen überprüft und ergänzt werden.
description: The La Tène period cemetery in the suburb of Karlov in Kutná Hora lies in a region, in which older burial features are quite intensively concentrated along the rivers Vrchlice and Klejnárka. With its 49 from originally around 55 burials the almost fully excavated area can act as a model for contemporary cemeteries. According to the anthropological analyses the graves of adults dominate, including some with weapons and richly furnished female burials. These date from phase Lt B1b-c onwards, the weapon graves occur more intensively in phase Lt B2. The cemetery was abandoned before the beginning of phase Lt C1. Apart from documenting the finds and features, as well as signs of the treatment of the grave-goods and the graves, the investigation of this find-spot also allows one to gain new knowledge on the development of the structure of the cemetery itself and the mechanisms of employing native and foreign elements associated with the dynamics of the contemporary historical development. Thereby the results of the archaeological analyses should be checked and supplemented using modern methods of investigating the anthropological material by stable isotope analysis.
A cognitive behavioral therapy intervention to reduce fear of hypoglycemia in young adults with type 1 diabetes (FREE): study protocol for a randomized controlled trial
Creators: name: Martyn-Nemeth, Pamela
name: Duffecy, Jennifer
name: Quinn, Lauretta
name: Park, Chang
name: Mihailescu, Dan
name: Penckofer, Sue
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: BACKGROUND: In persons with type 1 diabetes (T1D), hypoglycemia is the major limiting factor in achieving optimal glycemic control. All persons with T1D are at risk for hypoglycemia (blood glucose level < 70 mg/dl), which is life-threatening and accompanied by serious physical and psychological symptoms, resulting in profound fear of hypoglycemia (FOH) and reduced quality of life. Young adults with T1D are at risk for FOH and have worse glycemic control and self-management behavior than other age groups with T1D. FOH also results in increased glycemic variability (GV). A major gap exists in how to manage FOH. Our overall objective is to reduce FOH and improve diabetes self-management, glycemic control, and GV in young adults with T1D to reduce or delay diabetes complications and improve quality of life. We aim to (1) determine the feasibility and acceptability of an eight-week cognitive behavioral therapy (CBT)-based Fear Reduction Efficacy Evaluation (FREE) intervention in young adults with T1D who experience FOH; and (2) determine the impact of the FREE intervention, compared to an attention control group, on the outcomes FOH, self-management, glycemic control (A1C), and glycemic variability (continuous glucose monitoring recordings). METHODS/DESIGN: A randomized controlled trial in 50 young adults aged 18 to 35 years with T1D will be used. Eligible subjects will be randomized to the intervention program (Fear Reduction Efficacy Evaluation [FREE]) or attention control group. A one-week run-in phase is planned, with baseline measures of FOH, self-management behavior, A1C, and real-time continuous glucose monitoring recordings (RT-CGM) to calculate GV for both groups. The intervention group will participate in eight weekly individual one-hour sessions using CBT and exposure treatment for specific fears. RT-CGM and a daily FOH diary will be used as feedback cues as part of the FREE program. The attention control group will participate in eight weekly individual one-hour diabetes self-management education (DSME) sessions and wear a RT-CGM device (to measure GV only) over 8 weeks. At completion, FOH will be measured, and RT-CGM recordings will be analyzed to determine differences between the FREE and control groups. DISCUSSION: Findings from this proposed pilot study will serve as the foundation for a larger trial to reduce FOH and improve self-management, glycemic control, and GV. TRIAL REGISTRATION: ClinicalTrials.gov: A cognitive behavioral therapy (CBT) intervention to reduce fear of hypoglycemia in type 1 diabetes, NCT03549104. Registered June 7, 2018.
Cosmological Parameter Estimation with Large Scale Structure Observations
Creators: name: Di Dio, Enea
name: Montanari, Francesco
name: Durrer, Ruth
name: Lesgourgues, Julien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift dependent angular power spectra of galaxy number counts, $C_\ell(z_1,z_2)$, calculated with all relativistic corrections at first order in perturbation theory. We pay special attention to the redshift dependence of the non-linearity scale and present Fisher matrix forecasts for Euclid-like and DES-like galaxy surveys. We compare the standard $P(k)$ analysis with the new $C_\ell(z_1,z_2)$ method. We show that for surveys with photometric redshifts the new analysis performs significantly better than the $P(k)$ analysis. For spectroscopic redshifts, however, the large number of redshift bins which would be needed to fully profit from the redshift information, is severely limited by shot noise. We also identify surveys which can measure the lensing contribution and we study the monopole, $C_0(z_1,z_2)$.
description: 26 pages, 11 figures; few typos in published version corrected