cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Dissemination of cholangiocarcinoma as pulmonary tumour embolism
Creators: name: González, Celia
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Chest imaging
subject: Pulmonary vessels
subject: CT
subject: Clinical Case

description: Clinical History: A 65-year-old man with stable non-small cell lung cancer presented a hepatic mass during the follow-up. The biopsy revealed cholangiocarcinoma. In the following controls, the patient presented filling defects in pulmonary artery branches and pulmonary thromboembolism was diagnosed, the patient being asymptomatic. The patient received chemotherapy and anticoagulation. In subsequent controls, the lesions in the pulmonary arteries increased and changed morphology.

description: 65 years, male
CA-SBA-1036: Archaeological Site Record for CA-SBA-1036
Creators: name: Kekich, Jessica
Year: 2001
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: United States of America (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/384/united-states-of-america-country
subject: North America (Continent)
valueUri: https://core.tdar.org/browse/geographic-keyword/2890/north-america-continent
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory

description: This document is the archaeological site record for CA-SBA-1036.
Integrable Superhierarchy of Discretized 2d Supergravity
Creators: name: Itoyama, H.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The hierarchical nonlinear super-differential equations are identified which describe universal behavior of the discretized model of $2d$ supergravity recently proposed. This is done by first taking a double scaling limit of the super Virasoro constraints ( at finite $N$) of the model and by rederiving it from the $\tilde{G}_{-1/2}$ constraint and the two reduction of the super KP hierarchy discussed. The double-scaled constraints are found to be described by a twisted scalar and a Ramond fermion.
description: 10 pages, Latex
CA-SBA-1037: Archaeological Site Record for CA-SBA-1037
Creators: name: Kekich, Jessica
Year: 2001
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: United States of America (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/384/united-states-of-america-country
subject: North America (Continent)
valueUri: https://core.tdar.org/browse/geographic-keyword/2890/north-america-continent
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory

description: This document is the archaeological site record for CA-SBA-1037.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Cart. 188 (11 H 73), f. 0079v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0079v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0079v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Quantum transport in a normal metal/odd-frequency superconductor junction
Creators: name: Linder, Jacob
name: Yokoyama, Takehito
name: Tanaka, Yukio
name: Asano, Yasuhiro
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recent experimental results indicate the possible realization of a bulk odd-frequency superconducting state in the compounds CeCu$_2$Si$_2$, and CeRhIn$_5$. Motivated by this, we present a study of the quantum transport properties of a normal metal/odd-frequency superconductor junctions in a search for probes to unveil the odd-frequency symmetry. From the Eliashberg equations, we perform a quasiclassical approximation to account for the transport formalism of an odd-frequency superconductor with the Keldysh formalism. Specifically, we consider the tunneling charge conductance and tunneling thermal conductance. We find qualitatively distinct behaviour in the odd-frequency case as compared to the conventional even-frequency case, in both the electrical and thermal current. This serves as a useful tool to identify the possible existence of a bulk odd-frequency superconducting state.
description: 7 pages, 3 figures. Accepted for publication in Physical Review B
Production of Titanium Metal by an Electrochemical Molten Salt Process
Creators: name: Fatollahi-Fard, Farzin
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering

description: Titanium production is a long and complicated process. What we often consider to be the standard method of primary titanium production (the Kroll process), involves many complex steps both before and after to make a useful product from titanium ore. Thus new methods of titanium production, especially electrochemical processes, which can utilize less-processed feedstocks have the potential to be both cheaper and less energy intensive than current titanium production processes. This project is investigating the use of lower-grade titanium ores with the electrochemical MER process for making titanium via a molten salt process. The experimental work carried out has investigated making the MER process feedstock (titanium oxycarbide) with natural titanium ores|such as rutile and ilmenite|and new ways of using the MER electrochemical reactor to \upgrade" titanium ores or the titanium oxycarbide feedstock. It is feasible to use the existing MER electrochemical reactor to both purify the titanium oxycarbide feedstock and produce titanium metal.
Warm CO gas generated by possible turbulent shocks in a low-mass star-forming dense core in Taurus
Creators: name: Tokuda, Kazuki
name: Onishi, Toshikazu
name: Saigo, Kazuya
name: Matsumoto, Tomoaki
name: Inoue, Tsuyoshi
name: Inutsuka, Shu-ichiro
name: Fukui, Yasuo
name: Machida, Masahiro N.
name: Tomida, Kengo
name: Hosokawa, Takashi
name: Kawamura, Akiko
name: Tachihara, Kengo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report ALMA Cycle 3 observations in CO isotopes toward a dense core, MC27/L1521F in Taurus, which is considered to be at an early stage of multiple star formation in a turbulent environment. Although most of the high-density parts of this core are considered to be as cold as $\sim$10 K, high-angular resolution ($\sim$20 au) observations in $^{12}$CO ($J$ = 3--2) revealed complex warm ($>$15--60 K) filamentary/clumpy structures with the sizes from a few tens of au to $\sim$1,000 au. The interferometric observations of $^{13}$CO and C$^{18}$O show that the densest part with arc-like morphologies associated with the previously identified protostar and condensations are slightly redshifted from the systemic velocity of the core. We suggest that the warm CO clouds may be consequences of shock heating induced by interactions among the different density/velocity components that originated from the turbulent motions in the core. However, such a small-scale and fast turbulent motion does not correspond to a simple extension of the line-width-size relation (i.e., Larson'{}s law), and thus the actual origin remains to be studied. The high-angular resolution CO observations are expected to be essential in detecting small-scale turbulent motions in dense cores and to investigate protostar formation therein.
description: 17 pages, 6 figures, accepted for publication in ApJ
Intelligibility and First Passage Times In Complex Urban Networks
Creators: name: Blanchard, Ph.
name: Volchenkov, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Topology of urban environments can be represented by means of graphs. We explore the graph representations of several compact urban patterns by random walks. The expected time of recurrence and the expected first passage time to a node scales apparently linearly in all urban patterns we have studied In space syntax theory, a positive relation between the local property of a node (qualified by connectivity or by the recurrence time) and the global property of the node (estimated in our approach by the first passage time to it) is known as intelligibility. Our approach based on random walks allows to extend the notion of intelligibility onto the entire domain of complex networks and graph theory.
description: 19 pages, 4 figures, English UK, the Harvard style references
title: ADCO, Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.3 (2e moitié XIIIe siècle), Cart. 168 (11 H 66), f. 0146r
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2010
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.3 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 168 (11 H 66), f. 0146r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.3 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 168 (11 H 66), f. 0146r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Additional file 1 of Down-regulation of OsMYB103L distinctively alters beta-1,4-glucan polymerization and cellulose microfibers assembly for enhanced biomass enzymatic saccharification in rice
Creators: name: Wu, Leiming
name: Zhang, Mingliang
name: Zhang, Ran
name: Yu, Haizhong
name: Wang, Hailang
name: Li, Jingyang
name: Wang, Youmei
name: Hu, Zhen
name: Wang, Yanting
name: Luo, Zi
name: Li, Lin
name: Wang, Lingqiang
name: Peng, Liangcai
name: Xia, Tao
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1: Figure S1. Analysis of agronomic traits of myb103 mutant and OsMYB103L-RNAi transgenic plant. A Stem strength, B plant height, C lodging index and D 1000-Grain weight of myb103 mutant and OsMYB103L-RNAi transgenic plant (RNAi-1) compared with WT. **As significant differences between myb103 and RNAi-1 with WT at p < 0.01 (n = 10). Figure S2. Quantitative measurement of cell wall thickness by transmission electron microscopy in myb103 mutant and OsMYB103L-RNAi transgenic plant. * and ** As significant differences between myb103 and RNAi-1 with WT at p < 0.05 and 0.01 (n=3), respectively. Figure S3. Fourier transform infrared spectroscopic profiling of mature straws of the myb103 mutant and OsMYB103L-RNAi-1 transgenic line. Figure S4. Peak enrichment of OsCESA4, OsCESA7 and OsCESA9 by OsMYB103L through DAP-seq analysis. Figure S5. Subcellular localization and transactivation analysis of OsMYB103L. A Subcellular localization of OsMYB103L in tobacco. B Transcription activation analysis of OsMYB103L in yeast.
JAMIYATIMIZDA TA'LIM-TARBIYA JARAYONLARI VA BUNDA AYOLLARNING MUHIM OʻRINLARI
Creators: name: Valiyev, Bexruzjon
name: Xashimxodjayeva, Manzura
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqolada bugungi kundagi ta’lim-tarbiya jarayonida ayollarimizning oʻrni va shu masalaga oid dolzarb muammolar keltirilib oʻtilgan. Muammolarning asl sabablari atroflicha oʻrganib chiqishlikka nafaqat harakat qilingan hattoki sabablarga yechimlar ham taqdim etildi. Masalani oʻrganish faoliyatida bir qancha olim va olimalarning ham fikrlariga urgʻu berildi va ularning nazariyalari tushunarli va sodda qilib ochib berildi.
Electron--Vibron Interactions and Berry Phases in Charged Buckminsterfullerene: Part I
Creators: name: Auerbach, Assa
name: Manini, Nicola
name: Tosatti, Erio
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A simple model for electron-vibron interactions on charged buckminsterfullerene C$_{60}^{n-}$, $n=1,\ldots 5$, is solved both at weak and strong couplings. We consider a single $H_g$ vibrational multiplet interacting with $t_{1u}$ electrons. At strong coupling the semiclassical dynamical Jahn-Teller theory is valid. The Jahn-Teller distortions are unimodal for $n$=1,2,4,5 electrons, and bimodal for 3 electrons. The distortions are quantized as rigid body pseudo--rotators which are subject to geometrical Berry phases. These impose ground state degeneracies and dramatically change zero point energies. Exact diagonalization shows that the semiclassical level degeneracies and ordering survive well into the weak coupling regime. At weak coupling, we discover an enhancement factor of $5/2$ for the pair binding energies over their classical values. This has potentially important implications for superconductivity in fullerides, and demonstrates the shortcoming of Migdal--Eliashberg theory for molecular crystals.
description: 29 pages (+7 figures, 3 available upon request), LATEX, report-number: BM5154
Spin-charge separation and many-body localization
Creators: name: Zakrzewski, Jakub
name: Delande, Dominique
Publisher: name: arXiv
Year: 2018
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study many-body localization for a disordered chain of spin 1/2 fermions. In [Phys. Rev. B \textbf{94}, 241104 (2016)], when both down and up components are exposed to the same strong disorder, the authors observe a power law growth of the entanglement entropy that suggests that many-body localization is not complete; the density (charge) degree of freedom is localized, while the spin degree of freedom is apparently delocalized. We show that this power-like behavior is only a transient effect and that, for longer times, the growth is logarithmic in time suggesting that the spin degree of freedom is also localized, so that the system follows the standard many-body localization scenario. We also study the experimentally relevant case of quasiperiodic disorder.
description: version accepted in PRB
$K\toππ$ and $K-π$ Matrix Elements of the Chromomagnetic Operators from Dual QCD
Creators: name: Buras, Andrzej
name: Gerard, Jean-Marc
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform for the first time a direct calculation of on-shell $K\toππ$ hadronic matrix elements of chromomagnetic operators (CMO) in the Standard Model and beyond. To his end, we use the successful Dual QCD (DQCD) approach in which we also consider off-shell $K-π$ matrix elements that allows the comparison with lattice QCD calculations of these matrix elements presented recently by the ETM collaboration. Working in the SU(3) chiral limit, we find for the single $B$ parameter $B_{\rm CMO}=0.33$. Using the numerical results provided by the ETM collaboration we argue that only small corrections beyond that limit are to be expected. Our results are relevant for new physics scenarios in the context of the emerging $ε^\prime/ε$ anomaly strongly indicated within DQCD and supported by RBC-UKQCD lattice collaboration.
description: 14 pages, no figures, clarifications in Section 5.3 added, conclusions unchanged
Motion-based Object Segmentation based on Dense RGB-D Scene Flow
Creators: name: Shao, Lin
name: Shah, Parth
name: Dwaracherla, Vikranth
name: Bohg, Jeannette
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Given two consecutive RGB-D images, we propose a model that estimates a dense 3D motion field, also known as scene flow. We take advantage of the fact that in robot manipulation scenarios, scenes often consist of a set of rigidly moving objects. Our model jointly estimates (i) the segmentation of the scene into an unknown but finite number of objects, (ii) the motion trajectories of these objects and (iii) the object scene flow. We employ an hourglass, deep neural network architecture. In the encoding stage, the RGB and depth images undergo spatial compression and correlation. In the decoding stage, the model outputs three images containing a per-pixel estimate of the corresponding object center as well as object translation and rotation. This forms the basis for inferring the object segmentation and final object scene flow. To evaluate our model, we generated a new and challenging, large-scale, synthetic dataset that is specifically targeted at robotic manipulation: It contains a large number of scenes with a very diverse set of simultaneously moving 3D objects and is recorded with a simulated, static RGB-D camera. In quantitative experiments, we show that we outperform state-of-the-art scene flow and motion-segmentation methods on this data set. In qualitative experiments, we show how our learned model transfers to challenging real-world scenes, visually generating better results than existing methods.
description: Accepted to IEEE Robotics and Automation Letters and selected by IROS'18 Program Committee for presentation at the Conference
Finite and Infinite Symmetries in (2+1)-Dimensional Field Theory
Creators: name: Jackiw, Roman
name: Pi, So-Young
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: These days, Franco Iachello is {\it the\/} eminent practitioner applying classical and finite groups to physics. In this he is following a tradition at Yale, established by the late Feza Gursey, and succeeding Gursey in the Gibbs chair; Gursey in turn, had Pauli as a mentor. Iachello's striking achievement has been to find an actual realization of arcane supersymmetry within mundane adjacent even-odd nuclei. Thus far this is the only {\it physical\/} use of supersymmetry, and its fans surely must be surprised at the venue. Here we describe the role of $SO(2,1)$ conformal symmetry in non-relativistic Chern--Simons theory: how it acts, how it controls the nature of solutions, how it expands to an infinite group on the manifold of static solutions thereby rendering the static problem completely integrable. Since Iachello has also used the $SO(2,1)$ group in various contexts, this essay is presented to him on the occasion of his fiftieth birthday.
description: 23 double-spaced pages
Poisson type conformastat spherically symmetric anisotropic fluid spacetimes
Creators: name: García-Reyes, Gonzalo
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct conformastat spherically symmetric spacetimes representing anisotropic fluid matter distributions from given solutions of the Poisson's equation of Newtonian gravity and its corresponding circular speed profile. As simple examples, we present three families of spherically symmetric spacetimes which we apply in constructing new models of relativistic anisotropic thick spherical shells, and of relativistic galaxy models composite by a central spherical bulge, the thick disk and the dark matter halo, writing in this case the metric in cylindrical coordinates. Moreover, the geodesic motion of test particles in stable circular orbits around such structures is studied. We build anisotropic fluid sources for these spacetimes which satisfy all the energy conditions and the principal stresses are positive quantities (pressure).
description: 21 pages, 48 figures
Process Design and Modeling of the Horizontal Ribbon Growth Method for Continuous Production of Silicon Wafers
Creators: name: Jiaying  Ke
Publisher: name: Carnegie Mellon University
Year: 2018
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: This thesis contains theoretical development and experimental verification of the Horizontal Ribbon Growth (HRG) method for continuous silicon wafer manufacturing. In the HRG process, heat is removed through the top surface of the molten silicon pool, meanwhile, a thin silicon solid sheet is produced and extracted continuously, in this way minimizing material losses. We assessed three technical issues regarding the design and operation of the proposed process using mathematical modeling approaches: the overall process modeling, corrugated wavy interface, and front wedge formation. A Mathematical field model that governs the mass, momentum and energy balances is developed to provide a platform for alternative cooling/heating setups evaluation, as well as, various candidate process designs. The results of our study showed a relationship between the pulling velocity and the thickness of the ribbon that is qualitatively in agreement with available experimental results. A linear stability theory is used to investigate the wavy instability occurred at the wafer-melt interface. The conditions for the onset of stability were identified theoretically and numerically on the basis of diffusion-convection equations for the thermal, solutal fields coupled with the Navier-Stokes equation describing the flow field in the molten pool near the interface. The interface stability conditions of the system under different operating conditions were examined to establish the optimal range of operation. A cellular automata algorithm is coupled with finite difference scheme to study to evolution of crystallization for the system. The formation of dendrites at the crystal front, non-smooth/unstable solid-liquid interface, and sharp wedge were simulated. We demonstrate a more homogeneous segregation of impurities in the bottom portion of the resulting wafer, while an aggressive cooling rate results in an unsmooth interface formation. Two experimental pilot facilities were developed and utilized to validate theoretical findings and study the scale-up of the proposed process. In particular, an ice machine was built as a prototype to examine the feasibility of the process and test different preliminary design ideas, while a silicon pilot facility is utilized for experimenting with extracting silicon wafers continuously from the melt.
Anisotropy of exchange stiffness based on atomic-scale magnetic properties in rare-earth permanent magnet Nd$_2$Fe$_{14}$B
Creators: name: Toga, Yuta
name: Nishino, Masamichi
name: Miyashita, Seiji
name: Miyake, Takashi
name: Sakuma, Akimasa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We examine the anisotropic properties of the exchange stiffness constant, $\mathcal{A}$, for rare-earth permanent magnet, Nd$_2$Fe$_{14}$B, by connecting analyses with two different scales of length, i.e., Monte Carlo (MC) method with an atomistic spin model and Landau-Lifshitz-Gilbert (LLG) equation with a continuous magnetic model. The atomistic MC simulations are performed on the spin model of Nd$_2$Fe$_{14}$B constructed from ab-initio calculations, and the LLG micromagnetics simulations are performed with the parameters obtained by the MC simulations. We clarify that the amplitude and the thermal property of $\mathcal{A}$ depend on the orientation in the crystal, which are attributed to the layered structure of Nd atoms and weak exchange couplings between Nd and Fe atoms. We also confirm that the anisotropy of $\mathcal{A}$ significantly affects the threshold field for the magnetization reversal (coercivity) given by the depinning process.
description: 11 pages, 10 figures
The orbital relaxation: a possible origin of t-J model with large J
Creators: name: Fortunelli, Alessandro
name: Painelli, Anna
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Whereas the t-J model has gained wide popularity among physicists as a model for high-T_C superconductivity, its physical origin is not at all clear. In this communication we show that the Hubbard model with occupation-dependent hopping (t_1-t_2-t_3-U model), recently proposed to account for the relaxation of doubly-occupied orbitals, reduces, in a physically relevant parameter region, to an effective t-J-t' model with no upper bound on the J/t ratio. Results of exact diagonalization studies on finite size systems demonstrate the equivalence between the t_1-t_2-t_3-U model with intermediate/large U and the t-J-t' model even for very large J/t ratio (up to 16). On the contrary, t-U and t-J models turn out to be equivalent to t-J-t' model only for very small J values (J much smaller than t). Implications of the results on high-T_C superconductivity are briefly discussed.
description: 7 pages, plain Tex version 2.93, 2 figures available upon request via mail/fax (no local report #)
Schwinger model simulations with dynamical overlap fermions
Creators: name: Bietenholz, Wolfgang
name: Shcheredin, Stanislav
name: Volkholz, Jan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present simulation results for the 2-flavour Schwinger model with dynamical overlap fermions. In particular we apply the overlap hypercube operator at seven light fermion masses. In each case we collect sizable statistics in the topological sectors 0 and 1. Since the chiral condensate Sigma vanishes in the chiral limit, we observe densities for the microscopic Dirac spectrum, which have not been addressed yet by Random Matrix Theory (RMT). Nevertheless, by confronting the averages of the lowest eigenvalues in different topological sectors with chiral RMT in unitary ensemble we obtain -- for the very light fermion masses -- values for Sigma that follow closely the analytical predictions in the continuum.
description: 7 pages, poster presented at LATTICE07 (Regensburg)
IN03061 Jētavanārāma Slab Inscription 1 of Mahinda IV
Creators: name: Wickremasinghe, Don Martino de Zilva
Publisher: name: Zenodo
Year: 2019
Subjects: IN03061
Epigraphia Zeylanica
Jētavanārāma
Mahinda IV

description: IN03061 Jētavanārāma Slab Inscription 1 of Mahinda IV - Transcript and Translation Source: Wickremasinghe, Don Martino de Zilva. (1904-12). ‘No. 19. Jētavanārāma Slab-Inscription (No. 1) of Mahinda IV (circa 1026-1042 A.D.),’ Epigraphia Zeylanica 1, pp. 213-229.
Lettre de Henri-Joseph de Trimond à Jean-François Séguier, 1775-07-06
Creators: name: Trimond, Henri-Joseph de
name: Henri-Joseph De Trimond
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Bibliographie

description: [transcription] Paris, 6 juillet 1775.

Monsieur,

Je suis bien reconnaissant de la bonté que vous avez de me donner de vos nouvelles et de me faire part de vos observations sur mes manuscrits. Je vois qu'il ne sera pas facile d'en tirer un parti bien avantageux et que je n'entends rien à estimer semblables choses. En conséquence voici la résolution définitive que je prends à cet égard. Si quelque personne, libraire ou autre, les ayant vu chez vous, ou, sans les avoir vu, vous en offrait un prix quelconque, je vous prie de m'en avertir afin que je les vende à ce prix si ce prix peut me convenir. Si au contraire le prix ne me convient pas, ou que d'ici la fin de l'année aucun acquéreur ne se présente, je vous prierai de me les envoyer l'hiver prochain, bien entendu cependant que vous n'en ayez plus besoin à cette époque. J'aime mieux les avoir plus tard que de précipiter votre travail.

Il est très possible que quelqu'un les achète sans les voir, tant qu'ils sont entre vos mains, au lieu qu'il me serait impossible de les vendre sans les montrer. Cette réflexion me détermine à leur interdire tout autre voyage que celui de Paris.

Je me doutais bien que mon inscription ne serait pas nouvelle pour vous parce qu'il est difficile de vous donner du nouveau en ce genre mais j'aurais été extrêmement content, je l'avoue, de vous procurer une inscription que vous ne connaissiez pas.

J'ai dîné hier avec M. le marquis d'Aubais votre bon ami qui rajeunit. c'est une attaque de goutte qui a enlevé M. Capperonnier. On m'a assuré que depuis dix ans, il ne travaillait pas, c'est ce que j'ai peine à me persuader [fol. 247 v]. Je vous demande la continuation de votre amitié et vous prie d'être bien convaincu que rien n'égale les sentiments d'attachement et de respect que je vous conserverai toujours et avec lesquels j'ai l'honneur d'être,

Monsieur

Votre très humble et très obéissant serviteur.

De Trimond
description: [personnes citées] Charles de Baschi, marquis d' Aubais, Jean Capperonier
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 148_20, fol. 247
Projective normality of nonsingular toric varieties of dimension three
Creators: name: Ogata, Shoetsu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14M25, 52B20

description: We show that if an ample line bundle L on a nonsingular toric 3-fold satisfies h^0(L+2K)=0, then L is normally generated. As an application, we show that the anti-canonical divisor on a nonsingular toric Fano 4-fold is normally generated.
description: 36pages, 17figures
Problems in Discrete Geometry and Extremal Combinatorics
Creators: name: Zilin  Jiang
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: We study several problems in discrete geometry and extremal combinatorics. Discrete geometry studies the combinatorial properties of finite sets of simple geometric objects. One theme of the field is geometric Ramsey theory. Given m geometric objects, we want to select a not too small subset forming a configuration that is “regular” in some sense.
Shedding light on the Type Ia supernova extinction puzzle: dust location found
Creators: name: Bulla, M.
name: Goobar, A.
name: Dhawan, S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The colour evolution of reddened Type Ia supernovae can place strong constraints on the location of dust and help address the question of whether the observed extinction stems from the interstellar medium or from circumstellar material surrounding the progenitor. Here we analyse BV photometry of 48 reddened Type Ia supernovae from the literature and estimate the dust location from their $B-V$ colour evolution. We find a time-variable colour excess $E(B-V)$ for 15 supernovae in our sample and constrain dust to distances between 0.013 and 45 pc ($4\times10^{16}-10^{20}$ cm). For the remaining supernovae, we obtain a constant $E(B-V)$ evolution and place lower limits on the dust distance from the explosion. In all the 48 supernovae, the inferred dust location is compatible with an interstellar origin for the extinction. This is corroborated by the observation that supernovae with relatively nearby dust ($\lesssim$ 1 pc) are located close to the center of their host galaxy, in high-density dusty regions where interactions between the supernova radiation and interstellar clouds close by are likely to occur. For supernovae showing time-variable $E(B-V)$, we identify a potential preference for low $R_\mathrm{V}$ values, unusually strong sodium absorption and blue-shifted and time-variable absorption features. Within the interstellar framework, this brings evidence to a proposed scenario where cloud-cloud collisions induced by the supernova radiation pressure can shift the grain size distribution to smaller values and enhance the abundance of sodium in the gaseous phase.
description: 14 pages, 6 figures, 5 tables; accepted for publication in MNRAS
Gauge Theories for Gravity on a Line
Creators: name: Jackiw, Roman
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Professor M. C. Polivanov and I met only a few times, during my infrequent visits to the-then Soviet Union in the 1970's and 1980's. His hospitality at the Moscow Steclov Institute made the trips a pleasure, while the scientific environment that he provided made them professionally valuable. But it is the human contact that I remember most vividly and shall now miss after his death. At a time when issues of conscience were both pressing for attention and difficult/dangerous to confront, Professor Polivanov made a deep impression with his quiet but adamant commitment to justice. I can only guess at the satisfaction he must have felt when his goal of gaining freedom for Yuri Orlov was attained, and even more so these days when human rights became defensible in his country; it is regrettable that he cannot now enjoy the future that he strived to attain. One of our joint interests was the Liouville theory,$^{1,\,2}$ which in turn can be viewed as a model for gravity in two-dimensional space-time. Some recent developments in this field are here summarized and dedicated to Polivanov's memory, with the hope that he would have enjoyed knowing about them.
description: 17 double-spaced pages
CA-SBA-1565: Archaeological Site Record for CA-SBA-1565
Creators: name: Kekich, Jessica
Year: 2018
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: United States of America (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/384/united-states-of-america-country
subject: North America (Continent)
valueUri: https://core.tdar.org/browse/geographic-keyword/2890/north-america-continent
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory

description: This document is the archaeological site record for CA-SBA-1565.
The $q$-linked complex Minkowski space, its real forms and deformed isometry groups
Creators: name: Fioresi, R.
name: Latini, E.
name: Marrani, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We establish duality between real forms of the quantum deformation of the 4-dimensional orthogonal group studied by Fioresi et al. and the classification work made by Borowiec et al.. Classically these real forms are the isometry groups of $\mathbb{R}^4$ equipped with Euclidean, Kleinian or Lorentzian metric. A general deformation, named $q$-linked, of each of these spaces is then constructed, together with the coaction of the corresponding isometry group.
description: 25 pages, discussion improved, bibliography updated
Problem Representation and Team Mental Model Development in Individual and Team Problem Solving Performance
Creators: name: Wood, Matthew D.
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Teams play an important role in solving today’s complex problems. Disagreement exists about how teams should begin working on these problems to maximize performance. Ideation research encourages team members to produce many solutions to a problem and delay alignment of individual mental models of the problem. Team problem solving research advocates earlier and consistent alignment of individual mental models (team coherence). Problem solving research with individual solvers advocates clarifying and refining requirements for an ill-defined problem (representation construction), often via heuristics such as restating the problem in different ways. The purpose of this dissertation is to compare these different ways of starting on a problem, including the performance outcomes associated with each and the process by which these strategies produce their effect. The process by which teams identified goals for solving a problem was more important than a coherent team mental model for solution quality across two experiments with three-member teams solving case study problems. Experiment 1A & 1B shows that teams who collaborate early on a problem produce better solutions than those who collaborate after a delay. Team coherence is affected by working together with teammates, but does not impact solution quality. Groups of individuals who work alone the entire time (nominal teams) provided interim self-reports of their best solution that were more like their final problem solutions than other groups. In addition, members of interacting teams identify more “best” solutions of a problem when describing the solving process than “nominal” team (three-person aggregates working individually) members. Experiment 2 replicates Experiment 1 findings, and also shows that instructions to restate the problem had a similar positive effect on solution quality as early interaction. Working in isolation with restatement instructions provided comparable results to collaborating with team members. Team coherence, in contrast, was not related to solution quality. Both interaction and restatement improved quality by helping team members to consider alternative problem representations. Consideration of alternatives in turn may inoculate solvers from fixating on their first impressions of a best solution. Implications are discussed in terms of optimizing individual and team problem solving performance on ill-defined tasks.
Dark photon production through positron annihilation in beam-dump experiments
Creators: name: Marsicano, L.
name: Battaglieri, M.
name: Bondi', M.
name: Carvajal, C. D. R.
name: Celentano, A.
name: De Napoli, M.
name: De Vita, R.
name: Nardi, E.
name: Raggi, M.
name: Valente, P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: High energy positron annihilation is a viable mechanism to produce dark photons ($A^\prime$). This reaction plays a significant role in beam-dump experiments using experiments using multi-GeV electron-beams on thick targets by enhancing the sensitivity to $A^\prime$ production. The positrons produced by the electromagnetic shower can produce an $A^\prime$ via non-resonant ($e^+ + e^- \to γ+ A^\prime$) and resonant ($e^+ + e^- \to A^\prime$) annihilation on atomic electrons. For visible decays, the contribution of resonant annihilation results in a larger sensitivity with respect to limits derived by the commonly used $A^\prime$-strahlung in certain kinematic regions. When included in the evaluation of the E137 beam-dump experiment reach, positron annihilation pushes the current limit on $\varepsilon$ downwards by a factor of two in the range 33 MeV/c$^2
description: 9 pages, 7 figures
Electron--Vibron Interactions in Charged Buckminsterfullerene: Pair Energies and Spectra (Part II)
Creators: name: Manini, Nicola
name: Tosatti, Erio
name: Auerbach, Assa
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The ground state energy shifts and excitation spectra of charged buckminsterfullerene C$_{60}^{n-}$, $n=1,\ldots 5$ are calculated. The electron--vibron Hamiltonian of Part I is extended to include all $A_g$ and $H_g$ modes with experimentally determined frequencies and theoretically estimated coupling constants. Complex splitting patterns of $H_g$ vibrational levels are found. Our results are relevant to EPR measurements of spin splittings in C$_{60}^{2-}$ and C$_{60}^{3-}$ in solution. Spectroscopic gas-phase experiments will be of interest for further testing of this theory. As found in Part I, degeneracies in the electron and vibron Hamiltonians give rise to a dynamical Jahn Teller effect, and to a considerable enhancement of the electronic pairing interaction. This helps to overcome repulsive Coulomb interactions and has important implications for superconductivity in K$_3$C$_{60}$ and the insulating state in K$_4$C$_{60}$.
description: 28 pages (+3 ps figures), LATEX, report-number: BM5155
Quantized Rabi Oscillations and Circular Dichroism in Quantum Hall Systems
Creators: name: Tran, Duc Thanh
name: Cooper, Nigel R.
name: Goldman, Nathan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dissipative response of a quantum system upon a time-dependent drive can be exploited as a probe of its geometric and topological properties. In this work, we explore the implications of such phenomena in the context of two-dimensional gases subjected to a uniform magnetic field. It is shown that a filled Landau level exhibits a quantized circular dichroism, which can be traced back to its underlying non-trivial topology. Based on selection rules, we find that this quantized circular dichroism can be suitably described in terms of Rabi oscillations, whose frequencies satisfy simple quantization laws. Moreover, we discuss how these quantized dissipative responses can be probed locally, both in the bulk and at the boundaries of the quantum Hall system. This work suggests alternative forms of topological probes in quantum systems based on circular dichroism.
description: 7 pages, including 3 figures and Appendix
On the renormalization group flow of f(R)-gravity
Creators: name: Machado, Pedro F.
name: Saueressig, Frank
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the functional renormalization group equation for quantum gravity to construct a non-perturbative flow equation for modified gravity theories of the form $S = \int d^dx \sqrt{g} f(R)$. Based on this equation we show that certain gravitational interactions monomials can be consistently decoupled from the renormalization group (RG) flow and reproduce recent results on the asymptotic safety conjecture. The non-perturbative RG flow of non-local extensions of the Einstein-Hilbert truncation including $\int d^dx \sqrt{g} \ln(R)$ and $\int d^dx \sqrt{g} R^{-n}$ interactions is investigated in detail. The inclusion of such interactions resolves the infrared singularities plaguing the RG trajectories with positive cosmological constant in previous truncations. In particular, in some $R^{-n}$-truncations all physical trajectories emanate from a Non-Gaussian (UV) fixed point and are well-defined on all RG scales. The RG flow of the $\ln(R)$-truncation contains an infrared attractor which drives a positive cosmological constant to zero dynamically.
description: 55 pages, 7 figures, typos corrected, references added, version to appear in Phys. Rev. D
Probing the Phase Behavior of Complex Fluids Using Microliter Droplet Reactors
Creators: name: Nelson, Christopher William
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Microfluidic droplet-based techniques allow for the formation of extremely uniform emulsions with precise control over the contents of each phase. In this thesis, we exploit these small scale fluid manipulation techniques to study several related phenomena in the area of complex fluids engineering: phase separation and dewetting in three-phase liquid systems, partitioning of high value nanomaterials, and the coalescence and creaming of dilute oil-in-water emulsions. Phase separation occurs, for example, in aqueous systems composed of two or more dissimilar polymers. Using a model system composed of polyethylene glycol, dextran, and water, we study dehydration-driven wetting transitions in a microfluidic array-type device, and then use this technique to estimate the very low interfacial tension between the aqueous phases as a function of polymer concentration. Next, we scale up the droplet-based fluid handling techniques to develop a millifluidic platform for screening the effect of water clarifiers on the stability of dilute crude-oil-in-water emulsions. Finally, the tools and techniques previously developed are adapted and extended to study aqueous two phase extraction, which has recently emerged as a promising technique for sorting synthetic nanomaterials such as single walled carbon nanotubes. The partition coefficient of a nanotube depends on many system parameters, including the presence and concentration of surfactants and salts, and the properties of the phase forming polymers. Knowledge of these relationships provides insight into the fundamental processes governing partitioning and are required for rational design of large scale separation processes. We demonstrate that a microliter scale droplet-based fluid handling approach coupled with inline absorption spectroscopy can facilitate the identification and optimization of the critical parameters for aqueous two phase extraction of carbon nanotubes. The primary contribution of this thesis is a set of robust tools and techniques to quickly, and with high compositional resolution, quantify phenomena such as phase change and partitioning in complex fluid systems.