cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Disorder-induced topological phase transitions on Lieb lattices
Creators: name: Chen, Rui
name: Xu, Dong-Hui
name: Zhou, Bin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by the very recent experimental realization of electronic Lieb lattices and research interest on topological states of matter, we study the topological phase transitions driven by Anderson disorder on spin-orbit coupled Lieb lattices in the presence of spin-independent and dependent potentials. By combining the numerical transport and self-consistent Born approximation methods, we found that both time-reversal invariant and broken Lieb lattices can host disorder-induced gapful topological phases, including the quantum spin Hall insulator (QSHI) and quantum anomalous Hall insulator (QAHI) phases. For the time-reversal invariant case, this disorder can induce a topological phase transition directly from normal insulator (NI) to the QSHI. While for the time-reversal broken case, the disorder can induce either a QAHI-QSHI phase transition or a NI-QAHI-QSHI phase transition. Remarkably, the time-reversal broken QSHI phase can be induced by Anderson disorder on the spin-orbit coupled Lieb lattices without time-reversal symmetry.
description: accepted for publication in Phys. Rev. B
Aluminium Record Plate
Creators: name: Project Team, Their Finest Hour
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: This record contains a photograph of an item taken along to a Digital Collection Day held at Perton.
title: CtIP and MRN promote non-homologous end-joining of etoposide-induced DNA double-strand breaks in G1
Creators: name: Quennet, Verena
name: Beucher, Andrea
name: Barton, Olivia
name: Takeda, Shunichi
name: Löbrich, Markus
Publisher: name: Oxford University Press
Year: 2022

description: Topoisomerases class II (topoII) cleave and re-ligate the DNA double helix to allow the passage of an intact DNA strand through it. Chemotherapeutic drugs such as etoposide target topoII, interfere with the normal enzymatic cleavage/re-ligation reaction and create a DNA double-strand break (DSB) with the enzyme covalently bound to the 5′-end of the DNA. Such DSBs are repaired by one of the two major DSB repair pathways, non-homologous end-joining (NHEJ) or homologous recombination. However, prior to repair, the covalently bound topoII needs to be removed from the DNA end, a process requiring the MRX complex and ctp1 in fission yeast. CtIP, the mammalian ortholog of ctp1, is known to promote homologous recombination by resecting DSB ends. Here, we show that human cells arrested in G0/G1 repair etoposide-induced DSBs by NHEJ and, surprisingly, require the MRN complex (the ortholog of MRX) and CtIP. CtIP's function for repairing etoposide-induced DSBs by NHEJ in G0/G1 requires the Thr-847 but not the Ser-327 phosphorylation site, both of which are needed for resection during HR. This finding establishes that CtIP promotes NHEJ of etoposide-induced DSBs during G0/G1 phase with an end-processing function that is distinct to its resection function.
Exotics: Heavy Pentaquarks and Tetraquarks
Creators: name: Ali, Ahmed
name: Lange, Jens Sören
name: Stone, Sheldon
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: For many decades after the invention of the quark model in 1964 there was no evidence that hadrons are formed from anything other than the simplest pairings of quarks and antiquarks, mesons being formed of a quark-antiquark pair and baryons from three quarks. In the last decade, however, in an explosion of data from both $e^+e^-$ and hadron colliders, there are many recently observed states that do not fit into this picture. These new particles are called generically "exotics". They can be either mesons or baryons. Remarkably, they all decay into at least one meson formed of either a $c\overline{c}$ or $b\overline{b}$ pair. In this review, after the introduction, we explore each of these new discoveries in detail first from an experimental point of view, then subsequently give a theoretical discussion. These exotics can be explained if the new mesons contain two-quarks and two-antiquarks (tetraquarks), while the baryons contain four-quarks plus an antiquark (pentquarks). The theoretical explanations for these states take three divergent tracks: tightly bound objects, just as in the case of normal hadrons, but with more constituents, or loosely bound "molecules" similar to the deuteron, but formed from two mesons, or a meson or baryon, or more wistfully, they are not multiquark states but appear due to kinematic effects caused by different rescatterings of virtual particles; most of these models have all been post-dictions. Both the tightly and loosely bound models predict the masses and related quantum numbers of new, as yet undiscovered states. Thus, future experimental discoveries are needed along with theoretical advances to elucidate the structure of these new exotic states.
description: Review article to appear in Prog. Part. Nucl. Phys. 109 pages, 55 figures, v2 contains corrections due to reviewers and others comments
Tables S1 - S3 and Text S1 from Limited by the roof of the world: mountain radiations of Apollo swallowtails controlled by diversity-dependence processes
Creators: name: Condamine, Fabien L.
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Table S1: Current biogeographic and mountain distribution of the genus Parnassius; Table S2: Time-dependent diversification analyses realized with RPANDA; Table S3: Diversity-dependent diversification analyses realized with DDD; Text S1: Simulations with time-dependent and diversity-dependent models
Ultra-spinning exotic compact objects supporting static massless scalar field configurations
Creators: name: Hod, Shahar
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Horizonless spacetimes describing highly compact exotic objects with reflecting (instead of absorbing) surfaces have recently attracted much attention from physicists and mathematicians as possible quantum-gravity alternatives to canonical classical black-hole spacetimes. Interestingly, it has recently been proved that spinning compact objects with angular momenta in the sub-critical regime ${\bar a}\equiv J/M^2\leq1$ are characterized by an infinite countable set of surface radii, $\{r_{\text{c}}({\bar a};n)\}^{n=\infty}_{n=1}$, that can support asymptotically flat static configurations made of massless scalar fields. In the present paper we study analytically the physical properties of ultra-spinning exotic compact objects with dimensionless angular momenta in the complementary regime ${\bar a}>1$. It is proved that ultra-spinning reflecting compact objects with dimensionless angular momenta in the super-critical regime $\sqrt{1-[{{m}/{(l+2)}}]^2}\leq|{\bar a}|^{-1}<1$ are characterized by a finite discrete family of surface radii, $\{r_{\text{c}}({\bar a};n)\}^{n=N_{\text{r}}}_{n=1}$, distributed symmetrically around $r=M$, that can support spatially regular static configurations of massless scalar fields (here the integers $\{l,m\}$ are the harmonic indices of the supported static scalar field modes). Interestingly, the largest supporting surface radius $r^{\text{max}}_{\text{c}}({\bar a})\equiv \text{max}_n\{r_{\text{c}}({\bar a};n)\}$ marks the onset of superradiant instabilities in the composed ultra-spinning-exotic-compact-object-massless-scalar-field system.
description: 13 pages
The superluminous supernova SN 2017egm in the nearby galaxy NGC 3191: a metal-rich environment can support a typical SLSN evolution
Creators: name: Nicholl, Matt
name: Berger, Edo
name: Margutti, Raffaella
name: Blanchard, Peter K.
name: Guillochon, James
name: Leja, Joel
name: Chornock, Ryan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: At redshift z=0.03, the recently-discovered SN 2017egm is the nearest Type I superluminous supernova (SLSN) to date, and first near the center of a massive spiral galaxy (NGC 3191). Using SDSS spectra of NGC 3191, we find a metallicity ~2 Z$_\odot$ at the nucleus and ~1.3 Z$_\odot$ for a star forming region at a radial offset similar to SN 2017egm. Archival radio-to-UV photometry reveals a star-formation rate ~15 M$_\odot$ yr$^{-1}$ (with ~70% dust-obscured), which can account for a Swift X-ray detection, and stellar mass ~$10^{10.7}$ M$_\odot$. We model the early UV-optical light curves with a magnetar central-engine model, using the Bayesian light curve fitting tool MOSFiT. The fits indicate ejecta mass 2-4 M$_\odot$, spin period 4-6 ms, magnetic field (0.7-1.7)$\times 10^{14}$G, and kinetic energy 1-2 $\times10^{51}$ erg. These parameters are consistent with the overall distributions for SLSNe, modeled by Nicholl et al (2017), although the derived mass and spin are towards the low end, possibly indicating enhanced loss of mass and angular momentum before explosion. This has two implications: (i) SLSNe can occur at solar metallicity, although with a low fraction ~10%; and (ii) metallicity has at most a modest effect on their properties. Both conclusions are in line with results for long gamma-ray bursts. Assuming a monotonic rise gives an explosion date MJD $57889\pm1$. However, a short-lived excess in the data relative to the best-fitting models may indicate an early-time `bump'. If confirmed, SN 2017egm would be the first SLSN with a spectrum during the bump-phase; this shows the same O II lines seen at maximum light, which may be an important clue for explaining these bumps.
description: Accepted for publication in ApJL
Electron-positron annihilation into hadrons at the higher-loop levels
Creators: name: Nesterenko, A. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The strong corrections to the R-ratio of electron-positron annihilation into hadrons are studied at the higher-loop levels. Specifically, the essentials of continuation of the spacelike perturbative results into the timelike domain are elucidated. The derivation of a general form of the commonly employed approximate expression for the R-ratio (which constitutes its truncated re-expansion at high energies) is delineated, the appearance of the pertinent $π^2$-terms is expounded, and their basic features are examined. It is demonstrated that the validity range of such approximation is strictly limited to $\sqrt{s}/Λ> \exp(π/2) \simeq 4.81$ and that it converges rather slowly when the energy scale approaches this value. The spectral function required for the proper calculation of the R-ratio is explicitly derived and its properties at the higher-loop levels are studied. The developed method of calculation of the spectral function enables one to obtain the explicit expression for the latter at an arbitrary loop level. By making use of the derived spectral function the proper expression for the R-ratio is calculated up to the five-loop level and its properties are examined. It is shown that the loop convergence of the proper expression for the R-ratio is better than that of its commonly employed approximation. The impact of the omitted higher-order $π^2$-terms on the latter is also discussed.
description: 21 pages, 8 figures, 4 tables
Additional file 1: of Long non-coding RNA UFC1 promotes gastric cancer progression by regulating miR-498/Lin28b
Creators: name: Zhang, Xu
name: Liang, Wei
name: Liu, Jibin
name: Zang, Xueyan
name: Gu, Jianmei
name: Pan, Lei
name: Shi, Hui
name: Fu, Min
name: Huang, Zhenhua
name: Zhang, Yu
name: Qian, Hui
name: Jiang, Pengcheng
name: Xu, Wenrong
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Table S1. The sequences of primers for qRT-PCR. Table S2 The sequences of control and UFC1 shRNAs. Table S3. The association between UFC1 expression levels (–ΔCt) in tumor tissues and the clinicopathological features of gastric cancer patients. Table S4. The correlation between serum UFC1 expression levels (–ΔCt) and the clinicopathological characteristics of gastric cancer patients. Table S5. The correlation between exosomal UFC1 expression levels (–ΔCt) and the clinicopathological parameters of gastric cancer patients. (DOCX 25 kb)
Stationary states of boundary driven exclusion processes with nonreversible boundary dynamics
Creators: name: Erignoux, C.
name: Landim, C.
name: Xu, T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove a law of large numbers for the empirical density of one-dimensional, boundary driven, symmetric exclusion processes with different types of non-reversible dynamics at the boundary. The proofs rely on duality techniques.
Braiding by Majorana Tracking and Long-Range CNOT Gates with Color Codes
Creators: name: Litinski, Daniel
name: von Oppen, Felix
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Color-code quantum computation seamlessly combines Majorana-based hardware with topological error correction. Specifically, as Clifford gates are transversal in two-dimensional color codes, they enable the use of the Majoranas' nonabelian statistics for gate operations at the code level. Here, we discuss the implementation of color codes in arrays of Majorana nanowires that avoid branched networks such as T-junctions, thereby simplifying their realization. We show that, in such implementations, nonabelian statistics can be exploited without ever performing physical braiding operations. Physical braiding operations are replaced by Majorana tracking, an entirely software-based protocol which appropriately updates the Majoranas involved in the color-code stabilizer measurements. This approach minimizes the required hardware operations for single-qubit Clifford gates. For Clifford completeness, we combine color codes with surface codes, and use color-to-surface-code lattice surgery for long-range multi-target CNOT gates which have a time overhead that grows only logarithmically with the physical distance separating control and target qubits. With the addition of magic state distillation, our architecture describes a fault-tolerant universal quantum computer in systems such as networks of tetrons, hexons, or Majorana box qubits, but can also be applied to non-topological qubit platforms.
description: 11 pages, 9 figures
Simulation and analysis of $γ$-Ni cellular growth during laser powder deposition of Ni-based superalloys
Creators: name: Ghosh, Supriyo
name: Ofori-Opoku, Nana
name: Guyer, Jonathan E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cellular or dendritic microstructures that result as a function of additive manufacturing solidification conditions in a Ni-based melt pool are simulated in the present work using three-dimensional phase-field simulations. A macroscopic thermal model is used to obtain the temperature gradient $G$ and the solidification velocity $V$ which are provided as inputs to the phase-field model. We extract the cell spacings, cell core compositions, and cell tip as well as mushy zone temperatures from the simulated microstructures as a function of $V$. Cell spacings are compared with different scaling laws that correlate to the solidification conditions and approximated by $G^{-m}V^{-n}$. Cell core compositions are compared with the analytical solutions of a dendrite growth theory and found to be in good agreement. Through analysis of the mushy zone, we extract a characteristic bridging plane, where the primary $γ$ phase coalesces across the intercellular liquid channels at a $γ$ fraction between 0.6 and 0.7. The temperature and the $γ$ fraction in this plane are found to decrease with increasing $V$. The simulated microstructural features are significant as they can be used as inputs for the simulation of subsequent heat treatment processes.
description: Accepted for Publication in Computational Materials Science on December 16, 2017
Protocols for Implementing Long-term Archival Repositories Services (PILARS)
Creators: name: Foley, Ben
Publisher: name: Zenodo
Year: 2024
Subjects: Tools
Repositories
Identifiers
Infrastructure
Data
Governance
Strategy

description: For long term access to language material, it is important to ensure that data is well described by metadata, identified with persistent identifiers, and that shared services with good governance are in place to store interoperable data. By doing so, data can be findable, and appropriate access controls can be provided.

The Protocols for Implementing Long-term Archival Repositories Services (PILARS) are a set of protocols to guide the design and implementation of data storage services, aimed at IT practitioners, archivists, librarians, researchers and infrastructure managers. The protocols are intended to be complementary to the existing practices and principles of those disciplines, and support the FAIR and CARE research principles. The PILARS protocols could form the basis for design, evaluation or procurement of archival repository-services, and also allow for data custodians to begin organising data in a format ready for archiving and digital preservation.

The Language Data Commons of Australia (LDaCA) will present PILARS, along with case studies of the preparation of existing collections. One case study is the Batchelor Institute CALL Collection, a nationally significant archive of physical and digital works in and about Indigenous languages, containing thousands of items and representing hundreds of languages. The archive includes texts, audio and video resources, contributed over the past 50 or so years. LDaCA is working with Batchelor Institute to backup and reformat item record information, copying metadata from an ageing database into RO-Crate metadata format, and embedding cultural protocols to ensure long-term and appropriate access to this significant collection.
Exploring the predictability of symmetric texture zeros in quark mass matrices
Creators: name: Verma, Rohit
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The predictability of hierarchical quark mass matrices with symmetrically placed texture zeros is explored in the light of current precision measurements on quark masses and mixing data and interesting phenomenological relations among the quark mass ratios and flavor mixing angles along with CP asymmetry angle $β$ are deduced for different predictive textures within the framework of the Standard Model. It is shown that a single non-trivial phase in these mass matrices is sufficient enough to account for the observed CP-violation in the quark sector. In particular, it is observed that the Cabibbo angle is predominantly determined by the ratio $\sqrt{m_{d}/m_{s}}$ and corrections may also result from $\sqrt{m_{u}/m_{c}}$. Furthermore, $V_{cb}\cong \sqrt{m_d/m_b}$ or $V_{cb}\cong \sqrt{m_c/2m_t}$ along with $V_{ub}\simeq \sqrt{m_u/m_t}$ provide excellent agreements with the current mixing data and $β=-Arg\lbrace V_{td}\rbrace$ may provide a rigorous test at the B-factories for some of these texture zero structures.
description: Accepted in Physical Review D
Additional file 1 of Porous Carbon Substrate Improving the Sensing Performance of Copper Nanoparticles Toward Glucose
Creators: name: Qu, Zewen
name: Li, Shi
name: Feng, Wenshuai
name: Kan, Shuting
name: Gao, Xiaohui
name: Guo, Aimin
name: Li, Hongjian
name: Deng, Lianwen
name: Huang, Shengxiang
name: Zhao, Yan
name: Chen, Wei
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Astronomical and Space Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified

description: Additional file 1. Table S1.the element content in the prepared Cu NP@PC before electrochemical test. Table S2. the element content in the prepared Cu NP@PC after electrochemical test. Figure S3. the amperometric responses of Cu NP@PC upon succesive addition of glucose urine solution in 0.1 M KOH. Figure S4. the results from commercial test paper at the concentration of 2.8 mM.
VISION ASSISTED PICK AND PLACE ROBOTIC ARM
Creators: name: , Nisha
name: Kumar, Dinesh
name: Sekar
name: , Indira
Publisher: name: figshare
Year: 2018
Subjects: subject: 90609 Signal Processing
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents the design of a Vision assisted pick and place robotic Arm. The main objective of the paper is to pick and place an object from one place to other by 2 DOF robotic arm. USB camera is used as a vision sensor to measure the dimensions of the object to be picked. The USB camera collects the image of the object is transferred to the LabVIEW API with image processing toolkits and modules to process the image. The processed dimension of the object is transmitted via RS-232 serial communication to the microcontroller LPC2129. The appropriate PWM signal is generated by LPC2129 respectively to the servomotors. The robotic arm is designed with servomotors. Digital image processing algorithms are implemented to process the image captured by the USB camera to find the exact dimension of the object thereby to assist the robotic arm to finest. NI-IMAQ - Machine vision based functions are implemented and the results are presented.
Determinants of Agricultural productivity in Uganda
Creators: name: Nakalule, Prossy
name: Nakalule, Prossy
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Production Economics
subject: Agricultural productivity
subject: Determinants

description: This study investigated determinants of agricultural productivity in Uganda using quarterly data for the period 2007 to 2017. Descriptive statistical and econometric methodologies were utilized to analyze the data. The variables that were considered consisted of agricultural productivity, expenditure on capital (including on-farm irrigation and infrastructure), research and development investments in agricultural research, expenditure on extension services and population growth rate. According to the regression results, the determinants of agricultural productivity in Uganda at 5 percent level are; research and development investments in agricultural research, expenditure on extension services and population growth. The study recommends increased investment in Uganda’s agriculture research and development since these are key sources of agriculture productivity growth since this can change the production process by applying innovation, newly achieved scientific and practical knowledge and through management skills.
description: URI: http://hdl.handle.net/10570/8745
A positive-definite form of bounce-averaged quasilinear velocity diffusion for the parallel inhomogeneity in a tokamak
Creators: name: Lee, Jungpyo
name: Smithe, David
name: Wright, John
name: Bonoli, Paul
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this paper, the analytical form of the quasilinear diffusion coefficients is modified from the Kennel-Engelmann diffusion coefficients to guarantee the positive definiteness of its bounce average in a toroidal geometry. By evaluating the parallel inhomogeneity of plasmas and magnetic fields in the trajectory integral, we can ensure the positive definiteness and help illuminate some non-resonant toroidal effects in the quasilinear diffusion. When the correlation length of the plasma-wave interaction is comparable to the magnetic field variation length, the variation becomes important and the parabolic variation at the outer-midplane, the inner-midplane, and trapping tips can be evaluated by Airy functions. The new form allows the coefficients to include both resonant and non-resonant contributions, and the correlations between the consecutive resonances and in many poloidal periods. The positive-definite form is implemented in a wave code TORIC and we present an example for ITER using this form.
description: 21 Pages, 9 figures
The ALP miracle revisited
Creators: name: Daido, Ryuji
name: Takahashi, Fuminobu
name: Yin, Wen
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We revisit the ALP miracle scenario where the inflaton and dark matter are unified by a single axion-like particle (ALP). We first extend our previous analysis on the inflaton dynamics to identify the whole viable parameter space consistent with the CMB observation. Then, we evaluate the relic density of the ALP dark matter by incorporating uncertainties of the model-dependent couplings to the weak gauge bosons as well as the dissipation effect. The preferred ranges of the ALP mass and coupling to photons are found to be $0.01\lesssim m_ϕ\lesssim 1$\,eV and $g_{ϕγγ} = {\cal O}(10^{-11})$\,GeV$^{-1}$, which slightly depend on these uncertainties. Interestingly, the preferred regions are within reach of future solar axion helioscope experiments, IAXO and TASTE, and laser-based stim
description: 26 pages, 8 figures; matched with the published version
Spin Liquid versus Spin Orbit Coupling on the Triangular Lattice
Creators: name: Iaconis, Jason
name: Liu, Chunxiao
name: Halász, Gábor B.
name: Balents, Leon
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, we explore the relationship between strong spin-orbit coupling and spin liquid physics. We study a very general model on the triangular lattice where spin-orbit coupling leads to the presence of highly anisotropic interactions. We use variational Monte Carlo to study both $U(1)$ quantum spin liquid states and ordered ones, via the Gutzwiller projected fermion construction. We thereby obtain the ground state phase diagram in this phase space. We furthermore consider effects beyond the Gutzwiller wavefunctions for the spinon Fermi surface quantum spin liquid, which are of particular importance when spin-orbit coupling is present.
description: 24 pages, 8 figures, Submission to Scipost
The Perception-Distortion Tradeoff
Creators: name: Blau, Yochai
name: Michaeli, Tomer
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image restoration algorithms are typically evaluated by some distortion measure (e.g. PSNR, SSIM, IFC, VIF) or by human opinion scores that quantify perceived perceptual quality. In this paper, we prove mathematically that distortion and perceptual quality are at odds with each other. Specifically, we study the optimal probability for correctly discriminating the outputs of an image restoration algorithm from real images. We show that as the mean distortion decreases, this probability must increase (indicating worse perceptual quality). As opposed to the common belief, this result holds true for any distortion measure, and is not only a problem of the PSNR or SSIM criteria. We also show that generative-adversarial-nets (GANs) provide a principled way to approach the perception-distortion bound. This constitutes theoretical support to their observed success in low-level vision tasks. Based on our analysis, we propose a new methodology for evaluating image restoration methods, and use it to perform an extensive comparison between recent super-resolution algorithms.
description: CVPR 2018 (long oral presentation), see talk at: https://youtu.be/_aXbGqdEkjk?t=39m43s
FABRICATION AND CHARACTERIZATION OF CONDUCTING POLYMER COMPOSITE
Creators: name: Tomar, Ritu
name: Chirag R Sharma
Publisher: name: figshare
Year: 2018
Subjects: subject: 90609 Signal Processing
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The ion conducting polymer composite specimen has been prepared by using Polyvinyl- pyrrolidone (PVP) and Potassium hydroxide (KOH) using double distilled water as the solvent. The solution cast techniques was used to prepare the specimens. The main objective of the project is to study structural and mechanical properties of the polymer composite specimen. The conductivity and micro structure analysis has been carried out. The results revealed conductivity and hardness of the polymer composite increased with concentration of the KOH salt
title: ADCO, Comptes du Petit-Cîteaux (1477-1491) (11 H 1179), f. 00590
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Comptes du Petit-Cîteaux (1477-1491), Archives départementales de la Côte-d'Or, (11 H 1179). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Comptes du Petit-Cîteaux (1477-1491), Archives départementales de la Côte-d'Or, (11 H 1179), f. 00590, 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
Spin-Orbit Coupling and Electronic Correlations in Sr2RuO4
Creators: name: Kim, Minjae
name: Mravlje, Jernej
name: Ferrero, Michel
name: Parcollet, Olivier
name: Georges, Antoine
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the interplay of spin-orbit coupling (SOC) and electronic correlations in Sr2RuO4 using dynamical mean-field theory. We find that SOC does not affect the correlation-induced renormalizations, which validates the Hund's metal picture of ruthenates even in the presence of the sizable SOC relevant to these materials. Nonetheless, SOC found to change significantly the electronic structure at k-points where a degeneracy applies in its absence. We explain why these two observations are consistent with one another and calculate effects of SOC on the correlated electronic structure. The magnitude of these effects is found to depend on the energy of the quasiparticle state under consideration, leading us to introduce the notion of an "energy-dependent quasiparticle spin-orbit coupling". This notion is generally applicable to all materials in which both the spin-orbit coupling and electronic correlations are sizable.
description: 6 pages, 4 figures
Spatial behavior in a Mott insulator near the voltage-driven resistive transition
Creators: name: Dutta, Arijit
name: Majumdar, Pinaki
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop a real space theory of the voltage bias driven transition from a Mott insulator to a correlated metal. Within our Keldysh mean field approach the problem reduces to a self-consistency scheme for the charge and spin profiles in this open system. We solve this problem for a two dimensional antiferromagnetic Mott insulator at zero temperature. The charge and spin magnitude is uniform over the system at zero bias, but a bias $V$ leads to spatial modulation over a lengthscale $ξ(V)$ near the edges. $ξ(V)$ grows rapidly and becomes comparable to system size as $V$ increases towards a threshold scale $V_c$. The linear response conductance of the insulator is zero with the current being exponentially small for $V \ll V_c$. The current increases rapidly as $V \rightarrow V_c$. Beyond $V_c$, we observe an inhomogeneous low moment antiferromagnetic metal, and at even larger bias a current saturated paramagnetic metal. We suggest an approximate scheme for the spectral features of this nonequilibrium system.
description: 12 pages, 9 figures
Proving Expected Sensitivity of Probabilistic Programs
Creators: name: Barthe, Gilles
name: Espitau, Thomas
name: Grégoire, Benjamin
name: Hsu, Justin
name: Strub, Pierre-Yves
Publisher: name: arXiv
Year: 2017
Subjects: subject: Programming Languages (cs.PL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Program sensitivity, also known as Lipschitz continuity, describes how small changes in a program's input lead to bounded changes in the output. We propose an average notion of program sensitivity for probabilistic programs---expected sensitivity---that averages a distance function over a probabilistic coupling of two output distributions from two similar inputs. By varying the distance, expected sensitivity recovers useful notions of probabilistic function sensitivity, including stability of machine learning algorithms and convergence of Markov chains. Furthermore, expected sensitivity satisfies clean compositional properties and is amenable to formal verification. We develop a relational program logic called $\mathbb{E}$pRHL for proving expected sensitivity properties. Our logic features two key ideas. First, relational pre-conditions and post-conditions are expressed using distances, a real-valued generalization of typical boolean-valued (relational) assertions. Second, judgments are interpreted in terms of expectation coupling, a novel, quantitative generalization of probabilistic couplings which supports compositional reasoning. We demonstrate our logic on examples beyond the reach of prior relational logics. Our main example formalizes uniform stability of the stochastic gradient method. Furthermore, we prove rapid mixing for a probabilistic model of population dynamics. We also extend our logic with a transitivity principle for expectation couplings to capture the path coupling proof technique by Bubley and Dyer, and formalize rapid mixing of the Glauber dynamics from statistical physics.
Additional file 2: of Long non-coding RNA UFC1 promotes gastric cancer progression by regulating miR-498/Lin28b
Creators: name: Zhang, Xu
name: Liang, Wei
name: Liu, Jibin
name: Zang, Xueyan
name: Gu, Jianmei
name: Pan, Lei
name: Shi, Hui
name: Fu, Min
name: Huang, Zhenhua
name: Zhang, Yu
name: Qian, Hui
name: Jiang, Pengcheng
name: Xu, Wenrong
Publisher: name: figshare
Year: 2018
Subjects: Biochemistry
Medicine
Cell Biology
Molecular Biology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology
Cancer

description: Figure S1. UFC1 knockdown inhibits gastric cancer cell proliferation, migration and invasion. Figure S2. UFC1 overexpression enhances gastric cancer cell proliferation, migration and invasion. Figure S3. Bioinformatic prediction of UFC1-binding miRNAs and target genes of miR-498. Figure S4. Relative expression levels of miR-498 and Lin-28b in gastric cancer cells and gastric cancer tissues. Figure S5. UFC1 overexpression antagonizes miR-498-medited inhibition of gastric cancer cell proliferation, migration and invasion. Figure S6. Lin28b knockdown inhibits gastric cancer cell proliferation, migration and invasion. Figure S7. Lin28b overexpression promotes gastric cancer cell proliferation, migration and invasion. Figure S8. UFC1 promotes gastric cancer cell proliferation, migration and invasion via the upregulation of Lin28b. (DOCX 19 kb)
Anchor Key Ring
Creators: name: Project Team, Their Finest Hour
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: This item is an anchor keyring. Sidney was in the RAF in WW2 - he spoke Danish and German, in RAF as a PT Instructor. Whilst serving on the Shetland Islands he was a translator. He was given the key ring by either a RM or sailor, after one of the voyages across.
CANCELLED - Draft Plan Field Study Chornobyl Exclusion Zone
Creators: name: van Eerten, Darcy
Publisher: name: Zenodo
Year: 2022

description: As of 24th February 2022, Russian forces occupy the Chornobyl Exclusion Zone (CEZ), cancelling the field study proposed in this draft document with immediate effect. It is with the deepest regret that we witness the unfolding events in Ukraine, and navigate the consequences for scientific research. We thank our colleagues, Mr. Sergiy Dubchak, and the SSE Ecocenter, for their support in previous expeditions to the CEZ, and lending their expertise and advice for this project. This is a draft document that had only been partially reviewed at the time of cancellation and was still subject to approval by all parties. However, the work done to prepare for this project may still be of value in the future, whether the LISA 4 Society project can find an alternative sampling location, or another project is able to go the CEZ at a later date. What is certain is that the legacy of Chornobyl remains relevant to this day, and open scientific research plays an important role in untangling that legacy.
Regulation of Neuroblastoma Malignant Properties by Pannexin 1 Channels: Role of Post-Translational Modifications and Mutations
Creators: name: Holland, Stephen Henry
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: Neuroblastoma
Pannexin 1
Post-Translational Modification
Glycosylation
Phosphorylation
Cancer

description: Neuroblastoma (NB) is the most common extracranial solid tumour in childhood. NB is thought to arise from the failed differentiation of neural crest progenitor cells that would normally form tissues of the adrenal gland and sympathetic nervous system. These neural crest progenitors then uncontrollably proliferate forming a tumour. Despite aggressive surgery and chemotherapy, the cure rate of high-risk NB patients remains below 30%. Our laboratory has shown that human NB tumour specimens and high-risk patient derived cell lines express pannexin 1 (PANX1), and that treatment with the PANX1 channel blockers carbenoxolone or probenecid constitute reduce NB progression in vitro and in vivo. PANX1 is a glycoprotein that forms single membrane channels best known to serve as conduits for ATP release. Interestingly, while PANX1 was also detected in control neurons by western blotting, its banding pattern was strikingly different as a band at around 50 kDa was found in all NB cell lines, but not in neurons. Using shRNA targeting PANX1 and deglycosylation enzymes, I have shown that this band corresponds to a PANX1 glycosylated species. PANX1 has been reported to be phosphorylated in NB at amino acid Y10. PANX1 is also predicted to be glycosylated at N255. In order to study the role of these post-translational modifications, myc-tagged Y10F and N255A PANX1 mutants were engineered by site-directed mutagenesis. Immunolocalization and cell surface biotinylation assays suggest that the localization both mutants at the cell surface is reduced compared to that of myc-PANX1. Dye uptake assays revealed that myc-Y10F has significantly reduced channel activity. Expression of myc-Y10F and myc-N255A in NB cells inhibited cell proliferation and decreased metastatic potential in vitro. Further analysis of NB tumour specimens revealed that there is a missense mutation in PANX1 resulting in the formation of truncated peptide (amino acid 1-99). Interestingly, I have found that when co-expressed with myc-PANX1, PANX11-99, reduced PANX1 channel activity. Taken together, these findings indicate that phosphorylation on Y10 and glycosylation on N255 regulate PANX1 channel activity and exacerbate NB malignancy, while the expression of PANX11-99 in NB may be beneficial.
Life in Letters - The Women at Home
Creators: name: Project Team, Their Finest Hour
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Three letters were written in October 1940 by Elizabeth Sharr to her grandson and his wife. Her name was Lily but always called Jean to avoid confusion with another family member. Signed Grandma and Dad. Although "Dad" was in fact Ken's grandfather. She describes their lucky escape when their house was bombed and most of its contents destroyed. Unusually they had gone to visit their son because West Ham, where they live, was heavily bombed and they couldn't sleep because of the noise. After their house was destroyed, they moved in with their son and other relatives until they died, never having their own home again. These letters describe the above.Seven letters were written by Amelia Phillips to her daughter Lily and son-in-law Ken from August to October 1940. They detail her everyday life in Walworth during the Blitz. She describes how she copes with the bombing, on one occasion sleeping under the Kitchen table. Also, how houses around her were bombed and destroyed. She talks about events concerning all her children (she had eight living at this time) as had been passed on through the family grapevine. Some letters were signed by Mother and Nellie. Nellie being the unmarried daughter who lived at home and worked in the NAAFI.
The Fierz convergence criterion: a controlled approach to strongly-interacting systems with small embedded clusters
Creators: name: Ayral, Thomas
name: Vucicevic, Jaksa
name: Parcollet, Olivier
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an embedded-cluster method, based on the TRILEX formalism. It turns the Fierz ambiguity, inherent to approaches based on a bosonic decoupling of local fermionic interactions, into a convergence criterion. It is based on the approximation of the three-leg vertex by a coarse-grained vertex computed by solving a self-consistently determined multi-site effective impurity model. The computed self-energies are, by construction, continuous functions of momentum. We show that, in three interaction and doping regimes of parameters of the two-dimensional Hubbard model, self-energies obtained with clusters of size four only are very close to numerically exact benchmark results. We show that the Fierz parameter, which parametrizes the freedom in the Hubbard-Stratonovich decoupling, can be used as a quality control parameter. By contrast, the $GW$+extended dynamical mean field theory approximation with four cluster sites is shown to yield good results only in the weak-coupling regime and for a particular decoupling. Finally, we show that the vertex has spatially nonlocal components only at low Matsubara frequencies.
description: 16 pages
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0233
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
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0233, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0233, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
General treatment of quantum and classical spinning particles in external fields
Creators: name: Obukhov, Yuri N.
name: Silenko, Alexander J.
name: Teryaev, Oleg V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop the general theory of spinning particles with electric and magnetic dipole moments moving in arbitrary electromagnetic, inertial and gravitational fields. Both the quantum-mechanical and classical dynamics is investigated. We start from the covariant Dirac equation extended to a spin-${\frac 12}$ fermion with anomalous magnetic and electric dipole moments and then perform the relativistic Foldy-Wouthuysen transformation. This transformation allows us to obtain the quantum-mechanical equations of motion for the physical operators in the Schrödinger form and to establish the classical limit of relativistic quantum mechanics. The results obtained are then compared to the general classical description of the spinning particle interacting with electromagnetic, inertial and gravitational fields. The complete agreement between the quantum mechanics and the classical theory is proven in the general case. As an application of the results obtained, we consider the dynamics of a spinning particle in a gravitational wave and analyze the prospects of using the magnetic resonance setup to find possible manifestations of the gravitational wave on spin.
description: 38 pages, Revtex, minor changes