cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurement of relative phase diffusion between two Bose-Einstein condensates
Creators: name: Ruostekoski, Janne
name: Walls, Dan F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method of measuring diffusion of the relative phase between two Bose-Einstein condensates occupying different nuclear or spin hyperfine states coupled by a two-photon transition via an intermediate level. Due to the macroscopic quantum coherence the condensates can be decoupled from the electromagnetic fields. The rate of decoherence and the phase collapse may be determined from the occupation of the intermediate level or the absorption of radiation.
description: 4 pages, RevTex, 2 ps figures
Additional file 2 of The gut microbiome and antibiotic resistome of chronic diarrhea rhesus macaques (Macaca mulatta) and its similarity to the human gut microbiome
Creators: name: Yang, Shengzhi
name: Liu, Yu
name: Yang, Nan
name: Lan, Yue
name: Lan, Weiqi
name: Feng, Jinyi
name: Yue, Bisong
name: He, Miao
name: Zhang, Liang
name: Zhang, Anyun
name: Price, Megan
name: Li, Jing
name: Fan, Zhenxin
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. The summary of information of RMs. Table S2. The antibiotic resistant profiles of isolates from RMs
Early Detection of Multiwavelength Blazar Variability
Creators: name: Stolte, Hermann
name: Sinapius, Jonas
name: Sadeh, Iftach
name: Pueschel, Elisa
name: Weidlich, Matthias
name: Berge, David
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Blazars are a subclass of active galactic nuclei with relativistic jets pointing toward the observer. They are notable for their flux variability at all observed wavelengths and timescales. Together with simultaneous measurements at lower energies, the very-high-energy (VHE) emission observed during blazar flares may be used to probe the population of accelerated particles. However, optimally triggering observations of blazar high states can be challenging. Notable examples include identifying a flaring episode in real time and predicting VHE flaring activity based on lower-energy observables. For this purpose, we have developed a novel deep learning analysis framework, based on data-driven anomaly detection techniques. It is capable of detecting various types of anomalies in real-world, multiwavelength light curves, ranging from clear high states to subtle correlations across bands. Based on unsupervised anomaly detection and clustering methods, we differentiate source variability from noisy background activity, without the need for a labeled training data set of flaring states. The framework incorporates measurement uncertainties and is robust given data quality challenges, such as varying cadences and observational gaps. We evaluate our approach using both historical data and simulations of blazar light curves in two energy bands, corresponding to sources observable with the Fermi Large Area Telescope and the upcoming Cherenkov Telescope Array Observatory. In a statistical analysis, we show that our framework can reliably detect known historical flares.
Real-Time Visual Tracking and Identification for a Team of Homogeneous Humanoid Robots
Creators: name: Farazi, Hafez
name: Behnke, Sven
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The use of a team of humanoid robots to collaborate in completing a task is an increasingly important field of research. One of the challenges in achieving collaboration, is mutual identification and tracking of the robots. This work presents a real-time vision-based approach to the detection and tracking of robots of known appearance, based on the images captured by a stationary robot. A Histogram of Oriented Gradients descriptor is used to detect the robots and the robot headings are estimated by a multiclass classifier. The tracked robots report their own heading estimate from magnetometer readings. For tracking, a cost function based on position and heading is applied to each of the tracklets, and a globally optimal labeling of the detected robots is found using the Hungarian algorithm. The complete identification and tracking system was tested using two igus Humanoid Open Platform robots on a soccer field. We expect that a similar system can be used with other humanoid robots, such as Nao and DARwIn-OP
description: 20th RoboCup International Symposium, Leipzig, Germany, 2016
Simulated Transcatheter Aortic Valve Flow- Implications of Elliptical Deployment and Under‐Expansion at the Aortic Annulus.pdf
Creators: name: Sirois, Eric
name: Wenbin Mao
name: Kewei Li
name: Calderan, Joseph
name: Sun, Wei
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 90302 Biomechanical Engineering
subject: FOS: Medical engineering

description: Clinical use of transcatheter aortic valves(TAVs) has been associated with abnormal deployment,including oval deployment and under-expansion whenplaced into calcified aortic annuli. In this study, we performed an integrated computational and experimentalinvestigation to quantify the impact of abnormal deploymentat the aortic annulus on TAV hemodynamics. A size23 mm generic TAV computational model, developed andpublished previously, was subjected to elliptical deploymentat the annulus with eccentricity levels up to 0.68 andto under-expansion of the TAV at the annulus by up to25%. The hemodynamic performance was quantified foreach TAV deployment configuration. TAV opening geometries were fabricated using stereolithography and then subjected to steady forward flow testing in accordancewith ISO-5840. Centerline pressure profiles were compared to validate the computational model. Our findingsshow that slight ellipticity of the TAV may not lead todegeneration of hydrodynamic performance. However,under large ellipticity, increases in transvalvular pressuregradients were observed. Under-expanded deployment hasa much greater negative effect on the TAV hemodynamicscompared with elliptical deployment. The maximum turbulentviscous shear stress (TVSS) values were found to besignificantly larger in under-expanded TAVs. Althoughthe maximum value of TVSS was not large enough tocause hemolysis in all cases, it may cause platelets activation, especially for under-expanded deployments.
Doping Dependence of the Electronic Structure of Ba_{1-x}K_{x}BiO_{3} Studied by X-Ray Absorption Spectroscopy
Creators: name: Kobayashi, K.
name: Mizokawa, T.
name: Ino, A.
name: Matsuno, J.
name: Fujimori, A.
name: Samata, H.
name: Mishiro, A.
name: Nagata, Y.
name: de Groot, F. M. F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have performed x-ray absorption spectroscopy (XAS) and x-ray photoemission spectroscopy (XPS) studies of single crystal Ba_{1-x}K_{x}BiO_{3} (BKBO) covering the whole composition range $0 \leq x \leq 0.60$. Several features in the oxygen 1\textit{s} core XAS spectra show systematic changes with $x$. Spectral weight around the absorption threshold increases with hole doping and shows a finite jump between $x=0.30$ and 0.40, which signals the metal-insulator transition. We have compared the obtained results with band-structure calculations. Comparison with the XAS results of BaPb_{1-x}Bi_{x}O_{3} has revealed quite different doping dependences between BKBO and BPBO. We have also observed systematic core-level shifts in the XPS spectra as well as in the XAS threshold as functions of $x$, which can be attributed to a chemical potential shift accompanying the hole doping. The observed chemical potential shift is found to be slower than that predicted by the rigid band model based on the band-structure calculations.
description: 8 pages, 8 figures included
Stochastic control stabilizing unstable or chaotic maps
Creators: name: Braverman, Elena
name: Rodkina, Alexandra
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 39A50, 37H10, 93D15, 39A30

description: The paper considers a stabilizing stochastic control which can be applied to a variety of unstable and even chaotic maps. Compared to previous methods introducing control by noise, we relax assumptions on the class of maps, as well as consider a wider range of parameters for the same maps. This approach allows to stabilize unstable and chaotic maps by noise. The interplay between the map properties and the allowed neighbourhood where a solution can start to be stabilized is explored: as instability of the original map increases, the interval of allowed initial conditions narrows. A directed stochastic control aiming at getting to the target neighbourhood almost sure is combined with a controlling noise. Simulations illustrate that for a variety of problems, an appropriate bounded noise can stabilize an unstable positive equilibrium, without a limitation on the initial value.
description: 28 pages, 7 figures
Deliverable 2.2b Recommendations on IWG9 R&I activites: Focus on CO2 Capture, Target 6
Creators: name: Brunsvold, Amy
Publisher: name: Zenodo
Year: 2025

description: This report presents recommendations on advancing the next generation of CO₂ capture technologies in line with recent policy developments, including the Net Zero Industry Act (NZIA) and the Industrial Carbon Management Strategy (ICMS).
Normal and lateral Casimir-Lifshitz forces between a nanoparticle and a graphene grating
Creators: name: Luo, Minggang
name: Jeyar, Youssef
name: Guizal, Brahim
name: Antezza, Mauro
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the normal and lateral components of the Casimir-Lifshitz (CL) force between a nanoparticle and 1D graphene grating deposited on a fused silica slab. For this purpose, the scattering matrix approach together with the Fourier modal method augmented with local basis functions are used. We find that, by covering a fused silica slab by a graphene grating, the spectrum of the normal CL force at small frequencies is increased by about 100% for a grating filling fraction of 0.5, and even more when the slab is completely covered. The typically employed additive approximation (the weighted average of the force with and without the graphene coating) cannot provide any information on the lateral CL force, and, as we show, cannot provide accurate estimation for the normal CL force. When the nanoparticle is laterally shifted ($x_A$), the normal CL force is modulated and remains attractive. On the contrary, the lateral CL force changes sign twice in each period, showing a series of alternating stable and unstable lateral equilibrium positions, occurring in the graphene strips and of the grating slits regions, respectively. Finally, we show that the lateral shift effect is sensitive to the geometric factor $d/D$ ($d$ is the separation distance, and $D$ is the grating period). We identify two clear regions: a region ($d/D<1.0$) where the lateral shift significantly affects the CL energy, and a region ($d/D \geq 1.0$) where this effect is negligible, with a crossover at $d\approx D$. Our predictions can have relevant implications to experiments and applications of the CL normal and lateral forces acting on nanoparticles interacting with structured objects at the nano/micro scale, and are also directly valid for atoms close to these nanostructures.
description: 8 pages, 9 figures
Delay Equations and Radiation Damping
Creators: name: Chicone, C.
name: Kopeikin, S. M.
name: Mashhoon, B.
name: Retzloff, D. G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Starting from delay equations that model field retardation effects, we study the origin of runaway modes that appear in the solutions of the classical equations of motion involving the radiation reaction force. When retardation effects are small, we argue that the physically significant solutions belong to the so-called slow manifold of the system and we identify this invariant manifold with the attractor in the state space of the delay equation. We demonstrate via an example that when retardation effects are no longer small, the motion could exhibit bifurcation phenomena that are not contained in the local equations of motion.
description: 15 pages, 1 figure, a paragraph added on page 5; 3 references added
Spatially Resolved [CII] Emission in SPT0346-52: A Hyper-Starburst Galaxy Merger at z~5.7
Creators: name: Litke, Katrina C.
name: Marrone, Daniel P.
name: Spilker, Justin S.
name: Aravena, Manuel
name: Béthermin, Matthieu
name: Chapman, Scott
name: Chen, Chian-Chou
name: de Breuck, Carlos
name: Dong, Chenxing
name: Gonzalez, Anthony
name: Greve, Thomas R.
name: Hayward, Christopher C.
name: Hezaveh, Yashar
name: Jarugula, Sreevani
name: Ma, Jingzhe
name: Morningstar, Warren
name: Narayanan, Desika
name: Phadke, Kedar
name: Reuter, Cassie
name: Vieira, Joaquin
name: Weiß, Axel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: SPT0346-52 is one of the most most luminous and intensely star-forming galaxies in the universe, with L_FIR > 10^13 L_sol and Sigma_SFR ~ 4200 M_sol yr^-1 kpc^-2. In this paper, we present ~0.15'' ALMA observations of the [CII]158micron emission line in this z=5.7 dusty star-forming galaxy. We use a pixellated lensing reconstruction code to spatially and kinematically resolve the source-plane [CII] and rest-frame 158 micron dust continuum structure at ~700 pc (~0.12'') resolution. We discuss the [CII] deficit with a pixellated study of the L_[CII]/L_FIR ratio in the source plane. We find that individual pixels within the galaxy follow the same trend found using unresolved observations of other galaxies, indicating that the deficit arises on scales <700 pc. The lensing reconstruction reveals two spatially and kinematically separated components (~1 kpc and ~500 km s^-1 apart) connected by a bridge of gas. Both components are found to be globally unstable, with Toomre Q instability parameters << 1 everywhere. We argue that SPT0346-52 is undergoing a major merger, which is likely driving the intense and compact star formation.
description: Accepted for publication in ApJ
Additional file 3 of The gut microbiome and antibiotic resistome of chronic diarrhea rhesus macaques (Macaca mulatta) and its similarity to the human gut microbiome
Creators: name: Yang, Shengzhi
name: Liu, Yu
name: Yang, Nan
name: Lan, Yue
name: Lan, Weiqi
name: Feng, Jinyi
name: Yue, Bisong
name: He, Miao
name: Zhang, Liang
name: Zhang, Anyun
name: Price, Megan
name: Li, Jing
name: Fan, Zhenxin
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Figure S1. The gut microbiome of chronic diarrhea RMs and asymptomatic RMs. Figure S2. The functional comparison of gut microbiome. Figure S3. The gut bacterial composition of NHPs and human. Figure S4. The antibiotic resistance in gut microbiome of asymptomatic and chronic diarrhea RMs.
Comparison of Kikuchi Diffraction Geometries in Scanning Electron Microscope
Creators: name: Zhang, Tianbi
name: Berners, Lukas
name: Holzer, Jakub
name: Britton, T. Ben
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Recent advances in scanning electron microscope (SEM) based Kikuchi diffraction have demonstrated the important potential for reflection and transmission methods, like transmission Kikuchi diffraction (TKD) and electron backscatter diffraction (EBSD). Furthermore, with the advent of compact direct electron detectors (DED) it has been possible to place the detector in a variety of configurations within the SEM chamber. This motivates the present work where we explore the similarities and differences of the different geometries that include on-axis TKD & off-axis TKD using electron transparent samples, as well as more conventional EBSD. Furthermore, we compare these with the newest method called "reflection Kikuchi diffraction" RKD where the sample is placed flat in the chamber and the detector is placed below the pole piece. Through remapping collected diffraction patterns, all these methods can be used to generate an experimental "diffraction sphere" that can be used to explore diffraction from any scattering vector from the unit cell, as well as the ability to perform band profile analysis. This diffraction sphere approach enables us to further probe specific differences between the methods, including for example thickness effects in TKD that can result in the generation of diffraction spots, as well as electron scattering path length effects that result in excess and deficiency variations, as well as inversion of bands in experimental patterns.
description: edits after peer review
Hirtella glandulistipula Ducke
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Chrysobalanaceae
Hirtella
Hirtella glandulistipula

description: [285] Hirtella glandulistipula Ducke
 Arch. Jard. Bot. Rio de Janeiro 3: 265 (Ducke 1922).
 HERBARIUM DATA (FG). — A single collection, C. Feuillet et al. 10083 (MO).
INVENTORY DATA (FG). — 1 tree, dbh = 15.8 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 420, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Approaching Union-Management union-management cooperation in mass transit
Creators: name: Smith, Jay A.
name: Jennings, Kenneth M.
name: Traynham, Earle C.
name: Smith, Jay A.
name: Jennings, Kenneth M.
name: Traynham, Earle C.
Publisher: name: Unknown
Year: 1983
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum – 24th – 1983
Simulated XUV Photoelectron Spectra of THz-pumped Liquid Water
Creators: name: Arnold, Caroline
name: Inhester, Ludger
name: Carbajo, Sergio
name: Welsch, Ralph
name: Santra, Robin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Highly intense, sub-picosecond terahertz (THz) pulses can be used to induce ultrafast temperature jumps (T-jumps) in liquid water. A supercritical state of gas-like water with liquid density is established, and the accompanying structural changes are expected to give rise to time-dependent chemical shifts. We investigate the possibility of using extreme ultraviolet (XUV) photoelectron spectroscopy as a probe for ultrafast dynamics induced by sub-picosecond THz pulses of varying intensities and frequencies. To this end, we use ab initio methods to calculate photoionization cross sections and photoelectron energies of (H2O)$_{20}$ clusters embedded in an aqueous environment represented by point charges. The cluster geometries are sampled from ab initio molecular dynamics simulations modeling the THz-water interactions. We find that the peaks in the valence photoelectron spectrum are shifted by up to 0.4 eV after the pump pulse, and that they are broadened with respect to unheated water. The shifts can be connected to structural changes caused by the heating, but due to saturation effects they are not sensitive enough to serve as a thermometer for T-jumped water.
2018-Numerical Parametric Study of Paravalvular Leak Following a Transcatheter Aortic Valve Deployment Into a Patient-Specific Aortic Root.pdf
Creators: name: Wenbin Mao
name: Wang, Qian
name: Susheel Kodali
name: Sun, Wei
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 90302 Biomechanical Engineering
subject: FOS: Medical engineering
subject: 90399 Biomedical Engineering not elsewhere classified

description: Paravalvular leak (PVL) is a relatively frequent complication after transcatheter aortic valve replacement (TAVR) with increased mortality. Currently, there is no effective method to pre-operatively predict and prevent PVL. In this study, we developed a computational model to predict the severity of PVL after TAVR. Nonlinear finite element (FE) method was used to simulate a self-expandable CoreValve deployment into a patient specific aortic root, specified with human material properties of aortic tissues. Subsequently,computational fluid dynamics (CFD) simulations were performed using the post-TAVR geometriesfrom the FE simulation, and a parametric investigation of the impact of the transcatheter aortic valve (TAV) skirt shape, TAV orientation, and deployment height on PVL wasconducted. The predicted PVL was in good agreement with the echocardiography data. Due to the scallop shape of CoreValve skirt, the difference of PVL due to TAV orientation can be as large as 40%. Although the stent thickness is small compared to the aortic annulus size, we found that inappropriate modeling of it can lead to an underestimation of PVL up to 10 ml/beat. Moreover, the deployment height could significantly alter the extent and the distributionof regurgitant jets, which results in a change of leaking volume up to 70%. Further investigation in a large cohort of patients is warranted to verify the accuracy of our model.This study demonstrated that a rigorously developed patient-specific computational model can provide useful insights into underlying mechanisms causing PVL and potentially assist in pre-operative planning for TAVR to minimize PVL.
Current noise in quantum dot thermoelectric engines
Creators: name: Wozny, Simon
name: Leijnse, Martin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate a thermoelectric heat engine based on a single-level quantum dot, calculating average quantities such as current, heat current, output power, and efficiency, as well as fluctuations (noise). Our theory is based on a diagrammatic expansion of the memory kernel together with counting statistics, and we investigate the effects of strong interactions and next-to-leading order tunneling. Accounting for next-to-leading order tunneling is crucial for a correct description when operating at high power and high efficiency, and in particular affect the qualitative behavior of the Fano factor and efficiency. We compare our results with the so-called thermodynamic uncertainty relations, which provide a lower bound on the fluctuations for a given efficiency. In principle, the conventional thermodynamic uncertainty relations can be violated by the non-Markovian quantum effects originating from next-to-leading order tunneling, providing a type of quantum advantage. However, for the specific heat engine realization we consider here, we find that next-to-leading order tunneling does not lead to such violations, but in fact always pushes the results further away from the bound set by the thermodynamic uncertainty relations.
description: 11 pages, 6 figures
A Consice Medium for industrywide dissemination of railroad fuel savings measures
Creators: name: Saricks, Christopher L.
name: Bertram, Kenneth M.
name: Saricks, Christopher L.
name: Bertram, Kenneth M.
Publisher: name: Unknown
Year: 1983
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum – 24th – 1983
Demonstration of the rail energy cost analysis package: The system perspective (recap 1)
Creators: name: Hargrove, Michael B.
name: Smith, Michael E.
name: Hargrove, Michael B.
name: Smith, Michael E.
Publisher: name: Unknown
Year: 1983
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum – 24th – 1983
Asymptotic symmetries of three dimensional gravity and the membrane paradigm
Creators: name: Carrillo-Gonzalez, Mariana
name: Penna, Robert F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The asymptotic symmetry group of three-dimensional (anti) de Sitter space is the two dimensional conformal group with central charge $c=3\ell/2G$. Usually the asymptotic charge algebra is derived using the symplectic structure of the bulk Einstein equations. Here, we derive the asymptotic charge algebra by a different route. First, we formulate the dynamics of the boundary as a 1+1-dimensional dynamical system. Then we realize the boundary equations of motion as a Hamiltonian system on the dual Lie algebra, $\mathfrak{g}^*$, of the two-dimensional conformal group. Finally, we use the Lie-Poisson bracket on $\mathfrak{g}^*$ to compute the asymptotic charge algebra. This streamlines the derivation of the asymptotic charge algebra because the Lie-Poisson bracket on the boundary is significantly simpler than the symplectic structure derived from the bulk Einstein equations. It also clarifies the analogy between the infinite dimensional symmetries of gravity and fluid dynamics.
description: 15 pages
Time Dependent Effects and Transport Evidence for Phase Separation in La_{0.5}Ca_{0.5}MnO_{3}
Creators: name: Roy, M.
name: Mitchell, J. F.
name: Schiffer, P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The ground state of La_{1-x}Ca_{x}MnO_{3} changes from a ferromagnetic metallic to an antiferromagnetic charge-ordered state as a function of Ca concentration at x ~ 0.50. We present evidence from transport measurements on a sample with x = 0.50 that the two phases can coexist, in agreement with other observations of phase separation in these materials. We also observe that, by applying and then removing a magnetic field to the mainly charge-ordered state at some temperatures, we can "magnetically anneal" the charge order, resulting in a higher zero-field resistivity. We also observe logarithmic time dependence in both resistivity and magnetization after a field sweep at low temperatures.
description: 9 pages, LATEX, 3 postscript figures
Wall friction and Janssen effect in the solidification of suspensions
Creators: name: Saint-Michel, Brice
name: Georgelin, Marc
name: Deville, Sylvain
name: Pocheau, Alain
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We address the mechanical effect of rigid boundaries on freezing suspensions. For this we perform the directional solidification of monodispersed suspensions in thin samples and we document the thickness h of the dense particle layer that builds up at the solidification front. We evidence a change of regime in the evolution of h with the solidification velocity V with, at large velocity, an inverse proportionality and, at low velocity, a much weaker trend. By modelling the force balance in the critical state for particle trapping and the dissipation phenomena in the whole layer, we link the former evolution to viscous dissipation and the latter evolution to solid friction at the rigid sample plates. Solid friction is shown to induce an analog of the Janssen effect on the whole layer. We determine its dependence on the friction coefficient between particles and plates, on the Janssen's redirection coefficient in the particle layer, and on the sample depth. Fits of the resulting relationship to data confirm its relevance at all sample depths and provide quantitative determinations of the main parameters, especially the Janssen's characteristic length and the transition thickness h between the above regimes. Altogether, this study thus clarifies the mechanical implication of boundaries on freezing suspensions and, on a general viewpoint, provides a bridge between the issues of freezing suspensions and of granular materials.
description: 14 pages, 11 figures, Soft Matter 2018
More on scattering processes of dressed particles with a time-dependent mass
Creators: name: Yamada, Yusuke
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the scattering process of a scalar field having a time-dependent mass with another scalar field having a constant mass as a toy model of the scattering problems during preheating after inflation. Despite a general difficulty of analytically solving such models, in our previous work [1], we considered an exactly calculable model of such scattering processes with a time-dependent mass of the form $m^2(t)\supset μ^4t^2$ and the time-dependence never disappears formally. In this work, we discuss another exactly calculable model with a time-dependent mass that has a spike/peak but asymptotes to a constant, which effectively appears in the preheating model of Higgs inflation with a non-minimal coupling. Thanks to the localized time-dependence of the mass, the daughter particle number density behaves in a physically reasonable way contrary to the one in our previous model due to the infinite time-dependent mass in the asymptotic future. On the other hand, we find that the daughter particle experiences the kinematically forbidden process, which is a non-perturbative phenomenon found in our previous work. As in the previous model, the kinematically forbidden process produces daughter particles exponentially more than the parent particle having the time-dependent mass, which never happens for particle decay processes without time-dependent backgrounds. This result supports the existence of such a non-perturbative particle production process in general time-dependent backgrounds.
description: 28 pages, 5 figures
Spatial-Spectral Regularized Local Scaling Cut for Dimensionality Reduction in Hyperspectral Image Classification
Creators: name: Mohanty, Ramanarayan
name: Happy, S L
name: Routray, Aurobinda
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Dimensionality reduction (DR) methods have attracted extensive attention to provide discriminative information and reduce the computational burden of the hyperspectral image (HSI) classification. However, the DR methods face many challenges due to limited training samples with high dimensional spectra. To address this issue, a graph-based spatial and spectral regularized local scaling cut (SSRLSC) for DR of HSI data is proposed. The underlying idea of the proposed method is to utilize the information from both the spectral and spatial domains to achieve better classification accuracy than its spectral domain counterpart. In SSRLSC, a guided filter is initially used to smoothen and homogenize the pixels of the HSI data in order to preserve the pixel consistency. This is followed by generation of between-class and within-class dissimilarity matrices in both spectral and spatial domains by regularized local scaling cut (RLSC) and neighboring pixel local scaling cut (NPLSC) respectively. Finally, we obtain the projection matrix by optimizing the updated spatial-spectral between-class and total-class dissimilarity. The effectiveness of the proposed DR algorithm is illustrated with two popular real-world HSI datasets.
description: arXiv admin note: text overlap with arXiv:1811.08223
2018-New insights into mitral heart valve prolapse after chordae rupture through fluid–structure interaction computational modeling.pdf
Creators: name: Caballero, Andrés
name: Wenbin Mao
name: McKay, Raymond
name: Primiano, Charles
name: Sabet Hashim
name: Sun, Wei
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 90302 Biomechanical Engineering
subject: FOS: Medical engineering

description: Mitral valve (MV) dynamics depends on a force balance across the mitral leaflets, the chordae tendineae, the mitral annulus, the papillary muscles and the adjacent ventricular wall. Chordae rupture disrupts the link between the MV and the left ventricle (LV), causing mitral regurgitation (MR), the most common valvular disease. In this study, a fluid-structure interaction (FSI) modeling framework is implemented to investigate the impact of chordae rupture on the left heart (LH) dynamics and severity of MR. A control and seven chordae rupture LH models were developed to simulate a pathological process in which minimal chordae rupture precedes more extensive chordae rupture. Different non-eccentric and eccentric regurgitant jets were identified during systole. Cardiac efficiency was evaluated by the ratio of external stroke work. MV structural results showed that basal/strut chordae were the major load-bearing chordae. An increased number of ruptured chordae resulted in reduced basal/strut tension, but increased marginal/intermediate load. Chordae rupture in a specific scallop did not necessarily involve an increase in the stress of the entire prolapsed leaflet. This work represents a further step towards patient-specific modeling of pathological LH dynamics, and has the potential to improve our understanding of the biomechanical mechanisms and treatment of primary MR.
Additional file 1 of Transdiagnostic symptom subtypes across autism spectrum disorders and attention deficit hyperactivity disorder: validated by measures of neurocognition and structural connectivity
Creators: name: Zhang, Manxue
name: Huang, Yan
name: Jiao, Jian
name: Yuan, Danfeng
name: Hu, Xiao
name: Yang, Pingyuan
name: Zhang, Rui
name: Wen, Liangjian
name: Situ, Mingjing
name: Cai, Jia
name: Sun, Xueli
name: Guo, Kuifang
name: Huang, Xia
name: Huang, Yi
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Additional file 1.
Hirtella glandulosa Spreng.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Chrysobalanaceae
Hirtella
Hirtella glandulosa

description: [286] Hirtella glandulosa Spreng.
 Neue Entdeck. Pflanzenk. 1: 303 (Sprengel 1820).
 Hirtella damaziana Beauverd, Bull. Herb. Boissier, sér. 2, 7: 706 (Beauverd 1907).
 Hirtella hookeri Pilg., Notizbl. Königl. Bot. Gart. Berlin 6: 139 [20 Mar. 1914] (Pilger 1914).
 Hirtella velutina Pilg., Notizbl. Königl. Bot. Gart. Berlin 6: 141 [20 Mar. 1914] (Pilger 1914).
 Hirtella wachenheimii Benoist, Bull. Mus. Natl. Hist. Nat. 29: 595 (Benoist 1923).
VERNACULAR NAMES. — Pa: bukutru-gateu-seinõ • Wp: ɨwɨkwisĩ, mukwisĩ• Nt: kookoo, nengee udu • Cr: golèt-blan • Fr: gaulette blanche • Br: vermelhão.
 HERBARIUM DATA (FG). — 33 collections at CAY. Sel. exs.: G. Wachenheim 372 (holotype of Hirtella wachenheimii: P [P00741073]; iso-, K [K000220855], P [P00741074, P00741075]).
 INVENTORY DATA (FG). — 117 trees in 73 plots; Fmax = 1.1 %; dbhinv = 59.7 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 420, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Cosmologically viable generalized Einstein-Aether theories
Creators: name: Trinh, Damien
name: Pace, Francesco
name: Battye, Richard A.
name: Bolliet, Boris
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate generalized Einstein-Aether theories that are compatible with the Planck Cosmic Microwave Background (CMB) temperature anisotropy, polarisation, and lensing data. For a given dark energy equation of state, $w_{\rm de}$, we formulate a designer approach and we investigate their impact on the CMB temperature anisotropy and matter power spectra. We use the Equation of State approach to parametrize the perturbations and find that this approach is particularly useful in identifying the most suitable and numerically efficient parameters to explore in a Markov chain Monte Carlo (MCMC) analysis. We find the data constrains models with $w_{\rm de} = -1$ to be compatible with $Λ$CDM. For $w_{\rm de} \not= -1$ models, which avoid the gravitational waves constraint through the entropy perturbation, we constrain $w_{\rm de}$ to be $w_{\rm de } = -1.06^{+0.08}_{-0.03}$ (CMB) and $w_{\rm de } =-1.04^{+0.05}_{-0.02}$ (CMB+Lensing) at $68\%$C.L., and find that these models can be different from $Λ$CDM and still be compatible with the data. We also find that these models can ameliorate some anomalies in $Λ$CDM when confronted with data, such as the low-$\ell$ and high-$k$ power in the CMB temperature anisotropy and matter power spectra respectively, but not simultaneously. We also investigate the anomalous lensing amplitude, quantified by $A_{\rm lens}$, and find that that for $w_{\rm de} = -1$ models, $A_{\rm lens} = 1.15^{+0.07}_{-0.08}$ (CMB) and $A_{\rm lens} = 1.12\pm0.05$ (CMB+Lensing) at $68\%$C.L. $\sim$ 2$σ$ larger than expected, similar to previous analyses of $Λ$CDM.
description: 20 pages, 9 figures, 4 tables. Public version of the code will be released upon acceptance by PRD
Spectrophotometric Determination of Alkaline Phosphatase in Serum by A Copper Prussian Blue Analog as A Novel Polyphenol Oxidase-Like Nanozyme
Creators: name: Cheng, Qi
name: Zhang, Ling
name: Lei, Lulu
name: Huang, Hui
name: Li, Yongxin
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified

description: Nanomaterials with natural enzyme-like activities have attracted widespread interest and hence their development is significant. Here, a copper Prussian blue analogue named Cu-HCF was prepared and its polyphenol oxidase (PPO)-like activity was investigated for the first time. Cu-HCF nanozyme showed nearly 7-fold higher substrate affinity than natural PPO and was more stable under alkaline conditions, high temperature, high salt concentrations, and long-time storage. The catalytic activity of Cu-HCF nanozyme was reduced by pyrophosphate (PPi). Alkaline phosphatase (ALP) hydrolyzed PPi to orthophosphate (Pi) and hence the PPO-like activity of Cu-HCF nanozyme was restored. A method was therefore developed for selective determination of the ALP activity. The linear range was from 1 to 50 mU/mL with a limit of detection (LOD) of 0.35 mU/mL. This approach was validated in human serum samples, showing its potential in diagnostic applications.
The International Commercial aircraft market: Challenges and opportunities for the 1980s
Creators: name: Philips, Laurence T.
name: O'Connell, K. Michael
name: Philips, Laurence T.
name: O'Connell, K. Michael
Publisher: name: Unknown
Year: 1983
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum – 24th – 1983
Dispersion relation for hadronic light-by-light scattering: subleading contributions
Creators: name: Hoferichter, Martin
name: Stoffer, Peter
name: Zillinger, Maximilian
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we present an evaluation of subleading effects in the hadronic light-by-light contribution to the anomalous magnetic moment of the muon. Using a recently derived optimized basis, we first study the matching of axial-vector contributions to short-distance constraints at the level of the scalar basis functions, finding that also the tails of the pseudoscalar poles and tensor mesons play a role. We then develop a matching strategy that allows for a combined evaluation of axial-vector and short-distance constraints, supplemented by an estimate of tensor-meson contributions based on simplified assumptions for their transition form factors. Uncertainties are primarily propagated from the axial-vector transition form factors and the variation of the matching scale, but we also consider estimates of the low-energy effect of hadronic states not explicitly included. In total, we obtain $a_μ^\text{HLbL}\big|_\text{subleading}=33.2(7.2)\times 10^{-11}$, which in combination with previously evaluated contributions in the dispersive approach leads to $a_μ^\text{HLbL}\big|_\text{total}=101.9(7.9)\times 10^{-11}$.
description: 28 pages, 7 figures; journal version
Appearance of new lines and change in line shape in the IR spectrum of a NaV_2O_5 single crystal at the spin-Peierls transition
Creators: name: Popova, M. N.
name: Sushkov, A. B.
name: Vasil'ev, A. N.
name: Isobe, M.
name: Ueda, Yu.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the first observation of new lines in the infrared spectrum of a crystal due to unit-cell doubling at the spin-Peierls transition (in NaV_2O_5). The change in the shape of the spectral lines at the spin-Peierls transition is recorded for the first time. A contour characteristic of a Fano resonance is observed above the transition temperature Tsp and the standard symmetric contour is observed below Tsp. We attribute this effect to the opening of a gap in the magnetic-excitation spectrum at the spin-Peierls transition.
description: RevTex, 4 pages, 3 figures
Motor Carrier strategic planning: Price and the monosonistic shipper
Creators: name: Davis, Grant M.
name: Dillard, John E.
name: Cunningham, William
name: Davis, Grant M.
name: Dillard, John E.
name: Cunningham, William
Publisher: name: Unknown
Year: 1983
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum – 24th – 1983
Detecting imbalanced financial markets through time-varying optimization and nonlinear functionals
Creators: name: James, Nick
name: Menzies, Max
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business

description: This paper studies the time-varying structure of the equity market with respect to market capitalization. First, we analyze the distribution of the 100 largest companies' market capitalizations over time, in terms of inequality, concentration at the top, and overall discrepancies in the distribution between different times. In the next section, we introduce a mathematical framework of linear and nonlinear functionals of time-varying portfolios. We apply this to study the market capitalization exposure and spread of optimal portfolios chosen by a Sharpe optimization procedure. These methods could be more widely used to study various measures of optimal portfolios and measure different aspects of market exposure while holding portfolios selected by an optimization routine that changes over time.
description: Accepted manuscript. Minor edits since v1. Equal contribution
Hirtella hispidula Miq.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Chrysobalanaceae
Hirtella
Hirtella hispidula

description: [287] Hirtella hispidula Miq.
 Stirp. Surinam.Select.: 27 [“1850” publ. Mar. 1851] (Miquel 1851).
 Hirtella egensis Fritsch, Ann. K. K. Naturhist. Hofmus. 5: 10 (Fritsch 1890), “ Egensis ”.
 Hirtella subsetosa Fanshawe & Maguire, Bull. Torrey Bot. Club 75 (4): 381 [Jul.-Aug. 1948] (Fanshawe & Maguire 1948).
VERNACULAR NAMES. — Pa: ahavuiye • Wn: kulunë ki.
 HERBARIUM DATA (FG). — 45 collections at CAY. Sel. exs.: J.-F. Molino et al. 1661.
INVENTORY DATA (FG). — 37 trees in 17 plots; Fmax = 1.4 %; dbhinv = 21.2 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 420, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Inhomogeneous transformations in a gauged twistor formulation of a massive particle
Creators: name: Deguchi, Shinichi
name: Okano, Satoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we show that the mass-shell constraints in the gauged twistor formulation of a massive particle given in [Deguchi and Okano, Phys. Rev. D 93, 045016 (2016) [Erratum 93, 089906(E) (2016)]] are incorporated in an action automatically by extending the local $U(2)$ transformation to its inhomogeneous extension denoted by $IU(2)$. Therefore, it turns out that all the necessary constraints are incorporated into an action by virtue of the local $IU(2)$ symmetry of the system.
description: 12 pages, no figures, v2: minor correction, v3: published version