cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Apropiación y transformación del territorio en las dinámicas de conformación de asentamientos informales: barrio Compostela y asentamiento informal Altos de Compostela en Usme (Bogotá)
Creators: name: Camacho Ramírez, Lisbeth Yolima
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Ciudades y pueblos
subject: Viviendas
subject: Cultura urbana
subject: Ciudad informal
subject: Asentamientos informales
subject: Apropiación
subject: Transformación territorial
subject: Habitar

description: El objeto del presente proyecto corresponde al análisis de la dinámica de apropiación del territorio del barrio Compostela III y el asentamiento informal Altos de Compostela a partir de las representaciones sociales de sus habitantes en la localidad de Usme, Bogotá. Entendiendo que los fenómenos dentro de los territorios que son definidos a como asentamientos informales se han convertido en un medio importante de acceso a vivienda para las personas que no logran acceder al mercado formal, esto con relación a la escasa oferta de vivienda y los elevados precios de las tierras en Colombia. Se plantea que a partir de la conformación de un Asentamiento Informal se construyen unas representaciones sociales particulares, que en sí mismas permiten ver, explicar y entender lo que se percibe como realidad de los distintos actores barriales que confluyen en el territorio.
description: The object of this project corresponds to the analysis of the dynamics of appropriation of the territory of the neighborhood Compostela III and the informal settlement Altos de Compostela from the social representations of its inhabitants in the town of Usme, Bogotá. Understanding that phenomena within territories that are defined as informal settlements have become an important means of access to housing for people who fail to access the formal market, This relates to the low supply of housing and high land prices in Colombia. It is proposed that from the conformation of an Informal Settlement are built some particular social representations, which in themselves allow to see, explain and understand what is perceived as reality of the different neighborhood actors that converge in the territory.
Lee-Huang-Yang effects in the ultracold mixture of $^{23}$Na and $^{87}$Rb with attractive interspecies interactions
Creators: name: Guo, Zhichao
name: Jia, Fan
name: Li, Lintao
name: Ma, Yinfeng
name: Hutson, Jeremy M.
name: Cui, Xiaoling
name: Wang, Dajun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The beyond-mean-field Lee-Huang-Yang (LHY) correction is ubiquitous in dilute ultracold quantum gases. However, its effects are often elusive due to the typically much larger influence of the mean-field energy. In this work, we study an ultracold mixture of $^{23}$Na and $^{87}$Rb with tunable attractive interspecies interactions. The LHY effects manifest in the formation of self-bound quantum liquid droplets and the expansion dynamics of the gas-phase sample. A liquid-to-gas phase diagram is obtained by measuring the critical atom numbers below which the self-bound behavior disappears. In stark contrast to trapped gas-phase condensates, the gas-phase mixture formed following the liquid-to-gas phase transition shows an anomalous expansion featuring a larger release energy for increasing mean-field attractions.
description: 8 pages, 7 figures
Spectral fluctuations of tridiagonal random matrices from the beta-Hermite ensemble
Creators: name: Male, C.
name: Caer, G. Le
name: Delannay, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A time series delta(n), the fluctuation of the nth unfolded eigenvalue was recently characterized for the classical Gaussian ensembles of NxN random matrices (GOE, GUE, GSE). It is investigated here for the beta-Hermite ensemble as a function of beta (zero or positive) by Monte Carlo simulations. The fluctuation of delta(n) and the autocorrelation function vary logarithmically with n for any beta>0 (1<
description: 35 pages, 10 figures, corresponding author: G. Le Caer
A Comprehensive Survey of Scene Graphs: Generation and Application
Creators: name: Chang, Xiaojun
name: Ren, Pengzhen
name: Xu, Pengfei
name: Li, Zhihui
name: Chen, Xiaojiang
name: Hauptmann, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Scene graph is a structured representation of a scene that can clearly express the objects, attributes, and relationships between objects in the scene. As computer vision technology continues to develop, people are no longer satisfied with simply detecting and recognizing objects in images; instead, people look forward to a higher level of understanding and reasoning about visual scenes. For example, given an image, we want to not only detect and recognize objects in the image, but also know the relationship between objects (visual relationship detection), and generate a text description (image captioning) based on the image content. Alternatively, we might want the machine to tell us what the little girl in the image is doing (Visual Question Answering (VQA)), or even remove the dog from the image and find similar images (image editing and retrieval), etc. These tasks require a higher level of understanding and reasoning for image vision tasks. The scene graph is just such a powerful tool for scene understanding. Therefore, scene graphs have attracted the attention of a large number of researchers, and related research is often cross-modal, complex, and rapidly developing. However, no relatively systematic survey of scene graphs exists at present. To this end, this survey conducts a comprehensive investigation of the current scene graph research. More specifically, we first summarized the general definition of the scene graph, then conducted a comprehensive and systematic discussion on the generation method of the scene graph (SGG) and the SGG with the aid of prior knowledge. We then investigated the main applications of scene graphs and summarized the most commonly used datasets. Finally, we provide some insights into the future development of scene graphs. We believe this will be a very helpful foundation for future research on scene graphs.
description: 25 pages
A lo San Felipe. Transformación del suelo urbano en el barrio San Felipe en Bogotá (2010-2022)
Creators: name: Ferreira Rincón, Daniel
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Industria cultural - Aspectos sociales
subject: Barrio San Felipe - Aspectos socioeconómicos
subject: Urbanismo - Vida social y costumbres
subject: Suelo urbano
subject: Gentrificación
subject: Industrias culturales
subject: Distrito de arte
subject: San Felipe

description: La creación de un distrito de arte en San Felipe en Bogotá es consecuencia de un proceso de gentrificación de industrias culturales que integra artistas, vecinos, agentes culturales e instituciones públicas transformando los usos del suelo, valorizando sus precios y construyendo nuevas prácticas de habitar el barrio. Consolidando así un nicho de industrias culturales en la ciudad que viene impulsado por agentes culturales y políticas públicas propias del momento, excluyendo de poco a artistas y residentes. Por lo cual entender cómo ha sido este proceso de transformación del suelo urbano en San Felipe durante el periodo 2010-2022 se presenta como el objetivo de la investigación, mediante una metodología empírica y dialéctica, que profundiza en el análisis de los cambios del valor del suelo en sus precios por esta aglomeración de espacios culturales; la mutación de usos del suelo hacia usos comerciales relacionados con este sector económico; y la representación de nuevas prácticas y discursos de habitar San Felipe.
description: The creation of an art district in San Felipe in Bogotá is the consequence of a gentrification process of cultural industries that integrates artists, neighbors, cultural agents, and public institutions, transforming land use, valorizing its prices, and building new practices of inhabiting the neighborhood. Thus, consolidating a niche of cultural industries in the city driven by cultural agents and public policies of the moment, gradually excluding artists and residents. Therefore, understanding how this process of urban land transformation in San Felipe has been during the period 2010-2022 is presented as the objective of the research, through an empirical and dialectical methodology, which delves into the analysis of changes in land value in its prices due to this agglomeration of cultural spaces; the mutation of land uses towards commercial uses related to this economic sector; and the representation of new practices and discourses of inhabiting San Felipe.
Congruence in stable isotope values among two sympatric freshwater mussel species in northern New Zealand streams
Creators: name: Collier, Kevin J.
name: Melchior, Michele
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: We measured δ15N, δ13C, and percent carbon (C) and nitrogen (N) on foot and remaining soft tissue of the two native freshwater mussel species Echyridella aucklandica and E. menziesii (Hyriidae: Unionida) from three Waikato, northern New Zealand, streams to investigate differences among sites, sexes and species. Mean differences in δ15N and δ13C between foot and remaining soft tissue (mainly guts, gills and gonads) were <0.5‰, whereas %C and %N were higher in foot tissue and C:N values were lower. No differences were detected between mussel species, but δ15N and δ13C displayed marked differences among sites for both species, with δ15N variations consistent with the level of catchment land-use intensification. Variation in δ13C and δ15N among replicate mussels was low indicating few individuals are required to precisely characterise isotope signatures of local populations. The lack of evidence of trophic resource partitioning among species, and consistent differences in isotope ratios between sites, suggests that the more widespread and abundant E. menziesii may provide an effective baseline integrator of catchment activities that alter carbon supplies and nitrogen sources.
Angular momentum exchange between coherent light and matter fields
Creators: name: Simula, T. P.
name: Nygaard, N.
name: Hu, S. X.
name: Collins, L. A.
name: Schneider, B. I.
name: Molmer, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Full, three dimensional, time-dependent simulations are presented demonstrating the quantized transfer of angular momentum to a Bose-Einstein condensate from a laser carrying orbital angular momentum in a Laguerre-Gaussian mode. The process is described in terms of coherent Bragg scattering of atoms from a chiral optical lattice. The transfer efficiency and the angular momentum content of the output coupled vortex state are analyzed and compared with a recent experiment.
description: 4 pages, 4 figures
Improving thermodynamic bounds using correlations
Creators: name: Dechant, Andreas
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss how to use correlations between different physical observables to improve recently obtained thermodynamics bounds, notably the fluctuation-response inequality (FRI) and the thermodynamic uncertainty relation (TUR). We show that increasing the number of measured observables will always produce a tighter bound. This tighter bound becomes particularly useful if one of the observables is a conserved quantity, whose expectation is invariant under a given perturbation of the system. For the case of the TUR, we show that this applies to any function of the state of the system. The resulting correlation-TUR takes into account the correlations between a current and a non-current observable, thereby tightening the TUR. We demonstrate our finding on a model of the $\text{F}_1$-ATPase molecular motor, a Markov jump model consisting of two rings and transport through a two-dimensional channel. We find that the correlation-TUR is significantly tighter than the TUR and can be close to an equality even far from equilibrium.
description: 18 pages, 7 figures
MOESM9 of Potential therapeutic effects of cyanidin-3-O-glucoside on rheumatoid arthritis by relieving inhibition of CD38+ NK cells on Treg cell differentiation
Creators: name: Wang, Hongxing
name: Li, Shutong
name: Zhang, Guoqing
name: Wu, Hui
name: Chang, Xiaotian
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Hematology

description: Additional file 9: Table S4. Cytokine levels (pg/mL) in synovial fibroblast-like cells.
Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
Creators: name: Wang, X. L.
name: Collaboration, Belle
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cross section for e+e- to pi+ pi- psi(2S) between threshold and \sqrt{s}=5.5 GeV is measured using 673 fb^{-1} of data on and off the Υ(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant mass distribution, one at 4361\pm 9\pm 9 MeV/c2 with a width of 74\pm 15\pm 10 MeV/c2, and another at 4664\pm 11\pm 5 MeV/c2 with a width of 48\pm 15\pm 3 MeV/c2, if the mass spectrum is parameterized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.
description: 10 pages, 5 figures, 2 tables, version to appear in Phys. Rev. Lett
Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0
Creators: name: BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 385 fb^-1 of e^+e^- collisions at the CM energies of around 10.6 GeV recorded by the BaBar experiment, we study the amplitudes of the singly Cabibbo-suppressed decay D^0 --> K^- K^+ pi^0. We measure the strong phase difference between the D0bar and D0 decays to the K^*(892)^+ K^- state to be -35.5 +/- 1.9 (stat) +/- 2.2 (syst) degrees, and their amplitude ratio to be 0.599 +/- 0.013 (stat) +/- 0.011 (syst). We observe significant contributions from the Kpi and K^-K^+ scalar and vector amplitudes, and analyze the moments of the cosine of the helicity angle in these systems. We find no evidence for charged, scalar kappa(800) state, nor for higher spin states. We also perform a model-independent partial wave analysis of the K^-K^+ system in a limited mass range around 1 GeV/c^2. We study several models for Kpi S-wave amplitude, and describe which one is favored by our data.
description: 8 pages, 10 postscript figues, submitted to Physical Review D (Rapid Communications)
Semantically Stealthy Adversarial Attacks against Segmentation Models
Creators: name: Chen, Zhenhua
name: Wang, Chuhua
name: Crandall, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Segmentation models have been found to be vulnerable to targeted and non-targeted adversarial attacks. However, the resulting segmentation outputs are often so damaged that it is easy to spot an attack. In this paper, we propose semantically stealthy adversarial attacks which can manipulate targeted labels while preserving non-targeted labels at the same time. One challenge is making semantically meaningful manipulations across datasets and models. Another challenge is avoiding damaging non-targeted labels. To solve these challenges, we consider each input image as prior knowledge to generate perturbations. We also design a special regularizer to help extract features. To evaluate our model's performance, we design three basic attack types, namely `vanishing into the context,' `embedding fake labels,' and `displacing target objects.' Our experiments show that our stealthy adversarial model can attack segmentation models with a relatively high success rate on Cityscapes, Mapillary, and BDD100K. Our framework shows good empirical generalization across datasets and models.
Undeformed (additive) energy conservation law in Doubly Special Relativity
Creators: name: Mandanici, Gianluca
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: All the Doubly Special Relativity (DSR) models studied in literature so far involve a deformation of the energy conservation rule that forces us to release the hypothesis of the additivity of the energy for composite systems. In view of the importance of the issue for a consistent formulation of a DSR statistical mechanics and a DSR thermodynamics, we show that DSR models preserving the usual (i.e. additive) energy conservation rule can be found. These models allow the construction of a DSR-covariant extensive energy. The implications of the analysis for the dynamics of DSR-covariant multiparticle systems are also briefly discussed.
description: 5 pages; A comparison with a previous analysis has been added
Kubo formula for non-Hermitian systems and tachyon optical conductivity
Creators: name: Sticlet, Doru
name: Dóra, Balázs
name: Moca, Cătălin Paşcu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Linear response theory plays a prominent role in various fields of physics and provides us with extensive information about the thermodynamics and dynamics of quantum and classical systems. Here we develop a general theory for the linear response in non-Hermitian systems with non-unitary dynamics and derive a modified Kubo formula for the generalized susceptibility for arbitrary (Hermitian and non-Hermitian) system and perturbation. As an application, we evaluate the dynamical response of a non-Hermitian, one-dimensional Dirac model with imaginary and real masses, perturbed by a time-dependent electric field. The model has a rich phase diagram, and in particular, features a tachyon phase, where excitations travel faster than an effective speed of light. Surprisingly, we find that the dc conductivity of tachyons is finite, and the optical sum rule is exactly satisfied for all masses. Our results highlight the peculiar properties of the Kubo formula for non-Hermitian systems and are applicable for a large variety of settings.
Planning an agroforestry project - Zaplanowanie systemu alejowego
Creators: name: Philippe, Van Lerberghe
name: Borek Robert
name: Jędrejek Anna
Publisher: name: Zenodo
Year: 2019
Subjects: Agroforestry project design
planting distance
silvoarable systems
Projekt systemu alejowego
system drzewno-orny
obsada drzew
więźba

description: Istnieje wiele kombinacji rolno-leśnych systemów alejowych, różniących się zagęszczeniem drzew oraz układem sadzenia. Prawie wszystkie z nich są opłacalne, jeśli wysadzono odpowiednie gatunki drzew i roślin uprawnych, dopasowane do lokalnych uwarunkowań środowiskowych. Przed zasadzeniem drzew, należy zdecydować o optymalnej obsadzie początkowej, orientacji rzędów, rozstawie drzew i szerokości międzyrzędzi. Układ drzew nie może utrudniać przejazdu
maszyn rolniczych w międzyrzędziach oraz na granicach pól.
Phylogenetic relationship and characterization of the complete chloroplast genome of Rhododendron przewalskii subsp. przewalskii Maximowicz 1877, an ornamental and medicinal plant in China
Creators: name: Wang, Tao
name: Tang, Chuyu
name: Chen, Jianbo
name: Cao, Zhengfei
name: He, Hui
name: Li, Yuling
name: Li, Xiuzhang
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: As one of the top 10 famous flowers in Chinese tradition, Rhododendron przewalskii subsp. przewalskii known as ‘beauty in flowers,’ which has high ornamental and medicinal value. The complete chloroplast (cp) genome of R. przewalskii subsp. przewalskii was determined in this study. The complete chloroplast genome of R. przewalskii subsp. przewalskii was 201,233 bp in length and contained a large single-copy region (LSC, 108,077 bp), and a small single-copy region (SSC, 2624 bp) and a pair of inverted repeat regions (IRa and IRb, 45,266 bp). A total of 142 functional genes were observed in this cp genome, including 91 protein-coding genes (PCGs), 43 transfer RNA genes (tRNAs), and eight ribosomal RNA genes (rRNAs). The R. przewalskii subsp. przewalskii cp genome has an A + T content of 64.06% and presents a positive AT-skew (0.53%) and a negative GC-skew (−1.56%). The maximum likelihood phylogenetic analysis based on the concatenated nucleotide sequences of 13 PCGs strongly supported the monophyletic relationship of R. przewalskii subsp. przewalskii the clade of R. henanense subsp. lingbaoense. This study provides genomic evidence for the vegetation classification of Rhododendron.
Sub-arcsecond CO(1-0) and CO(2-1) observations of the ultraluminous infrared galaxy IRAS 10190+1322
Creators: name: Gracia-Carpio, J.
name: Planesas, P.
name: Colina, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of high resolution mapping of the CO(1-0) and CO(2-1) emission of the ultraluminous infrared galaxy (ULIRG) IRAS 10190+1322, with the IRAM interferometer, down to an angular resolution of ~0.3 arcsec. This object is composed of two interacting galaxies with a projected nuclear separation of 6 kpc, and was selected to analyze the physical and dynamical properties of the molecular gas in each galaxy in order to study the conditions that lead a galaxy pair to become ultraluminous in the infrared. With the exception of Arp 220, the closest ULIRG, this is the first time that the CO emission is morphologically and kinematically resolved in the two interacting galaxies of a ULIRG system. In one of the galaxies the molecular gas is highly concentrated, distributed in a circumnuclear disk of 1.7 kpc in size. The molecular gas in the presumably less infrared luminous galaxy is distributed in a more extended disk of 7.4 kpc. The molecular gas mass accounts for ~10% of the dynamical mass in each galaxy. Both objects are rich enough in molecular gas, Mgas ~ 4 10^9 Msun, as to experience an infrared ultraluminous phase.
description: 4 pages, 3 figures. Accepted for publication in A&A Letters Special Issue for the new extended configuration of the Plateau de Bure Interferometer
New sensitivity of LHC measurements to Composite Dark Matter Models
Creators: name: Butterworth, J. M.
name: Corpe, L.
name: Kong, X.
name: Kulkarni, S.
name: Thomas, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present sensitivity of LHC differential cross-section measurements to so-called "stealth dark matter" scenarios occurring in an SU(N) dark gauge group, where constituents are charged under the Standard Model and N=2 or 4. The low-energy theory contains mesons which can be produced at the LHC, and a scalar baryon dark matter (DM) candidate which cannot. We evaluate the impact of LHC measurements on the dark meson masses. Using existing lattice results, we then connect the LHC explorations to DM phenomenology, in particular considering direct-detection experiments. We show that current LHC measurements constrain DM masses in the region of 10 TeV. We discuss potential pathways to explore these models further at the LHC.
description: Updated with with journal accepted version. Significant changes to some limit curves, and additional discussion of relic density implications
Additional file 8 of Exosome-mediated miR-144-3p promotes ferroptosis to inhibit osteosarcoma proliferation, migration, and invasion through regulating ZEB1
Creators: name: Jiang, Mingyang
name: Jike, Yiji
name: Liu, Kaicheng
name: Gan, Fu
name: Zhang, Ke
name: Xie, Mingjing
name: Zhang, Junlei
name: Chen, Chuanliang
name: Zou, Xiaochong
name: Jiang, Xiaohong
name: Dai, Yongheng
name: Chen, Weikui
name: Qiu, Yue
name: Bo, Zhandong
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 8: Supplementary Table 1. Primers, antibodies, Lentivirus (LV) and adenovirus (ADV).
Anomalies and the quantum theory of chiral matter on a line
Creators: name: Link, Robert G.
Publisher: name: University of British Columbia
Year: 2010

description: We give a brief review of anomalies in quantum field theory - where they arise, what they imply, and how they have been dealt with in the past. We suggest that theories with a gauge anomaly can be consistently quantized by applying the analogue of Dirac's formalism for classical constrained hamiltonian systems to the quantum theory. This suggestion is implemented for the archetypical chiral Schwinger model. By diagonalizing the hamiltonian, we show that the model is consistent, unitary, and Lorentz invariant. Its vector gauge boson aquires a gauge anomaly generated mass, and the fermionic sector bosonizes. We review the proposals for describing free chiral bosons and show that there are two which are not the same. The bosonization of a Dirac fermion in background gauge and gravitational fields is used to obtain the coupling of these two theories to backgrounds such that they are both the bosonization of a Weyl fermion in the same backgrounds. Nonabelian bosonization of gauged Dirac fermions in curved space has been used to obtain a chiral nonabelian Bose theory which corresponds to gauged Weyl fermions in curved space. This theory is the Siegel WZNW model coupled appropriately to background fields. We perform a canonical quantization of the Siegel WZNW theory using the BRST formalism. We find that by introducing an anomaly cancelling conformal field, it can be quantized for a large class of symmetry groups. For a certain subset of these groups the conformal field vanishes.
Nanospintronics meets relativistic quantum physics: Ubiquity of Zitterbewegung effects
Creators: name: Zülicke, U.
name: Winkler, R.
name: Bolte, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a unified description of zitterbewegung-like phenomena for electron and hole systems showing Rashba spin splitting as well as for electrons in single-layer and bilayer graphene. The former class of systems can be interpreted as "nonrelativistic" whereas the latter are often called "ultrarelativistic" so that our unified description indicates an interesting connection between these two opposite limits.
description: 4 pages, elsart style
Non-thermal breaking of magnetic order via photo-generated spin defects
Creators: name: Pastor, Ernest
name: Moreno-Mencía, David
name: Monti, Maurizio
name: Johnson, Allan S.
name: Fleischmann, Nina
name: Wang, Cuixiang
name: Shi, Youguo
name: Liu, Xuerong
name: Mazzone, Daniel G.
name: Dean, Mark P. M.
name: Wall, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wave-like states upon chemical doping underpins the control of quantum phases. Photo-doping can induce similar transitions on the ultrafast timescale, however the response of the spin system has remained elusive. Here, we use 4D-ultrafast optical spectroscopy to extract quantitative magnetic dynamics in the spin-orbit coupled Mott insulator Sr3Ir2O7. We demonstrate that light can non-thermally melt long-range spin order. At low fluences magnetic order recovers within 1 ps despite demagnetization of roughly 50%. However, high fluences induce a crossover to a long-lived demagnetized state without increasing the lattice temperature. We show that the generation of photo-induced spin defects enables a mechanism that stabilizes the demagnetized state which could help expose new transient phases.
Search for Baryonic Resonances Decaying to Xi pi in Deep-Inelastic Scattering at HERA
Creators: name: H1 Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for narrow baryonic resonances decaying into Xi- pi- or Xi- pi+ and their antiparticles is carried out with the H1 detector using deep inelastic scattering events at HERA in the range of negative photon four-momentum transfer squared 2 < Q^2 < 100 GeV^2. No signal is observed for a new baryonic state in the mass range 1600 - 2300 MeV in either the doubly charged or the neutral decay channels. The known baryon Xi0 is observed through its decay mode into Xi- pi+. Upper limits are given on the ratio of the production rates of new baryonic states, such as the hypothetical pentaquark states Xi^{--}_{5q} or Xi^{0}_{5q}, relative to the Xi0 baryon state.
description: 15 pages, 4 figures
Comment on "Time Step Sensitivity of Nonlinear Atmospheric Models: Numerical Convergence, Truncation Error Growth, and Ensemble Design" Teixeira et al. (2007)
Creators: name: Yao, Lun-Shin
name: Hughes, Dan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Comment on "Time Step Sensitivity of Nonlinear Atmospheric Models: Numerical Convergence, Truncation Error Growth, and Ensemble Design" Teixeira et al.
description: 3 pages
Characterization of the complete chloroplast genome of Cynanchum acutum subsp. sibiricum (Apocynaceae)
Creators: name: Zhang, Erdong
name: Liu, Yi
name: Wang, Yan
name: Zhang, Xuedan
name: Wei, Yuqing
name: Zhang, Lei
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: In this study, we assembled the complete chloroplast (cp) genome of Cynanchum acutum subsp. sibiricum using high-throughput Illumina sequencing reads. The resulting chloroplast genome assembly displayed a typical quadripartite structure with a total length of 158,283 bp, which contained a pair of inverted repeat regions (IRs) of 24,459 bp. These two IRs were separated by a large single-copy region (LSC) and a small single-copy region (SSC) of 89,424 bp and 19,941 bp in length, respectively. The C. acutum subsp. sibiricum cp genome contained 130 genes, and its overall GC content was 37.87%. Phylogenetic analysis among C. acutum subsp. sibiricum and nine other Cynanchum species demonstrated that C. acutum subsp. sibiricum was closely related to C. chinense. The C. acutum subsp. sibiricum cp genome presented in this study lays a good foundation for further genetic and genomic studies of the Cynanchum as well as Apocynaceae.
The Sextet Arcs: a Strongly Lensed Lyman Break Galaxy in the ACS Spectroscopic Galaxy Survey towards Abell 1689
Creators: name: Frye, B. L.
name: Coe, D.
name: Bowen, D. V.
name: Benitez, N.
name: Broadhurst, T.
name: Guhathakurta, P.
name: Illingworth, G.
name: Menanteau, F.
name: Sharon, K.
name: Lupton, R.
name: Meylan, G.
name: Zekser, K.
name: Meurer, G.
name: Hurley, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of the HST Advanced Camera for Surveys spectroscopic ground-based redshift survey in the field of A1689. We measure 98 redshifts, increasing the number of spectroscopically confirmed objects by sixfold. We present two spectra from this catalog of the Sextet Arcs, images which arise from a strongly-lensed Lyman Break Galaxy (LBG) at a redshift of z=3.038. Gravitational lensing by the cluster magnifies its flux by a factor of ~16 and produces six separate images with a total r-band magnitude of r_625=21.7. The two spectra, each of which represents emission from different regions of the LBG, show H I and interstellar metal absorption lines at the systemic redshift. Significant variations are seen in Ly-alpha profile across a single galaxy, ranging from strong absorption to a combination of emission plus absorption. A spectrum of a third image close to the brightest arc shows Ly-alpha emission at the same redshift as the LBG, arising from either another spatially distinct region of the galaxy, or from a companion galaxy close to the LBG. Taken as a group, the Ly-alpha equivalent width in these three spectra decreases with increasing equivalent width of the strongest interstellar absorption lines. We discuss how these variations can be used to understand the physical conditions in the LBG. Intrinsically, this LBG is faint, ~0.1L*, and forming stars at a modest rate, ~4 solar masses per year. We also detect absorption line systems toward the Sextet Arcs at z=2.873 and z=2.534. The latter system is seen across two of our spectra.
description: Accepted for publication in ApJ
Promontory induced tidal mixing in a narrow channel : effects on nutrient concentrations, primary productivity and zooplankton standing stock
Creators: name: St. John, Michael A.
Publisher: name: University of British Columbia
Year: 2010

description: Horizontal mapping, aerial photography, and current meter deployment have been used to identify a tidally induced mixing event about a promontory in the Strait of Georgia, British Columbia, Canada. Mixing plumes were observed to commence, downstream of Shingle Spit during ebb tides when the mean velocity for the water column reached a minimum of 12.7 cm.s⁻¹. Mixing plumes on ebb tides, were characterized by increased surface salinities as well as increased nitrate + nitrite and phosphate concentrations. Increases in concentrations of nitrate + nitrite of 2.6 μg at .1⁻¹ and phosphate of 0.45 μg at.1⁻¹ were observed in the euphotic zone associated with the mixing plumes. Nutrient additions were correlated to an increase in primary production of 13.8 mg C.m⁻³ in the mixed water as determined by the uptake of ¹⁴CO₃²⁻. Estimates of total volume of upwelling during the stratified months of June and July 1986 were performed allowing an estimation of the net flux of new nutrients into the euphotic zone during this period. The total increase in primary production due to mixing occurring downstream of Shingle Spit was determined experimentally to range between 910 and 2.2x10⁴ kg of "new production" compared to the Redfield stoichiometric estimate of from 1.4x10³ to 3.0x10⁴ kg of "new production" during June and July, 1986. Measurements of net flow in Lambert Channel allowed determination of the destination of the increases in primary production. It is suggested that utilization of increases in primary production caused increases in the zooplankton standing stock in the region south of Lambert Channel and Hornby Island. Gut contents of adult Qncorhynchus kisutch caught in the region contained zooplankton groups which were components of the increase of zooplankton standing stock. The presence of these zooplankton groups in the gut contents suggests utilization of the increases in zooplankton standing stock by predators further up the food chain.
Transient Charging and Discharging of Spin-polarized Electrons in a Quantum Dot
Creators: name: Souza, F. M.
name: Leao, S. A.
name: Gester, R. M.
name: Jauho, A. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study spin-polarized transient transport in a quantum dot coupled to two ferromagnetic leads subjected to a rectangular bias voltage pulse. Time-dependent spin-resolved currents, occupations, spin accumulation, and tunneling magnetoresistance (TMR) are calculated using both nonequilibrium Green function and master equation techniques. Both parallel and antiparallel leads' magnetization alignments are analyzed. Our main findings are: a dynamical spin accumulation that changes sign in time, a short-lived pulse of spin polarized current in the emitter lead (but not in the collector lead), and a dynamical TMR that develops negative values in the transient regime. We also observe that the intra-dot Coulomb interaction can enhance even further the negative values of the TMR.
description: 7 pages, 6 figures. Typos corrections corresponding to the published version
Spin projected unrestricted Hartree-Fock ground states for harmonic quantum dots
Creators: name: De Giovannini, U.
name: Cavaliere, F.
name: Cenni, R.
name: Sassetti, M.
name: Kramer, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report results for the ground state energies and wave functions obtained by projecting spatially unrestricted Hartree Fock states to eigenstates of the total spin and the angular momentum for harmonic quantum dots with $N\leq 12$ interacting electrons including a magnetic field states with the correct spatial and spin symmetries have lower energies than those obtained by the unrestricted method. The chemical potential as a function of a perpendicular magnetic field is obtained. Signature of an intrinsic spin blockade effect is found.
description: 12 pages, 5 tables, 10 figures, submitted to Phys. Rev. B
Triangular pair density wave in confined superfluid $^3$He
Creators: name: Yapa, Pramodh Senarath
name: Boyack, Rufus
name: Maciejko, Joseph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent advances in experiment and theory suggest that superfluid $^3$He under planar confinement may form a pair density wave (PDW) whereby superfluid and crystalline orders coexist. While a natural candidate for this phase is a unidirectional stripe phase predicted by Vorontsov and Sauls in 2007, recent nuclear magnetic resonance measurements of the superfluid order parameter rather suggest a two-dimensional PDW with noncollinear wavevectors, of possibly square or hexagonal symmetry. In this Letter, we present a general mechanism by which a PDW with the symmetry of a triangular lattice can be stabilized, based on a superfluid generalization of Landau's theory of the liquid-solid transition. A soft-mode instability at finite wavevector within the translationally invariant planar-distorted B phase triggers a transition from uniform superfluid to PDW that is first order due to a cubic term generally present in the PDW free-energy functional. This cubic term also lifts the degeneracy of possible PDW states in favor of those for which wavevectors add to zero in triangles, which in two dimensions uniquely selects the triangular lattice.
description: main text: 6 pages, 4 figures; supplemental material: 17 pages, 1 figure, 9 animated plots (see ancillary files). v2: published version
Inclusive cross section and double helicity asymmetry for π^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
Creators: name: PHENIX Collaboration
name: Adare, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The PHENIX experiment presents results from the RHIC 2005 run with polarized proton collisions at sqrt(s)=200 GeV, for inclusive π^0 production at mid-rapidity. Unpolarized cross section results are given for transverse momenta p_T=0.5 to 20 GeV/c, extending the range of published data to both lower and higher p_T. The cross section is described well for p_T < 1 GeV/c by an exponential in p_T, and, for p_T > 2 GeV/c, by perturbative QCD. Double helicity asymmetries A_LL are presented based on a factor of five improvement in uncertainties as compared to previously published results, due to both an improved beam polarization of 50%, and to higher integrated luminosity. These measurements are sensitive to the gluon polarization in the proton, and exclude maximal values for the gluon polarization.
description: 375 authors, 7 pages, 3 figures. Submitted to Phys. Rev. D, Rapid Communications. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
QCD analysis of diffractive phenomena
Creators: name: Schoeffel, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The most important results on subnuclear diffractive phenomena obtained at HERA and Tevtaron are reviewed and new issues in nucleon tomography are discussed. Some challenges for understanding diffraction at the LHC, including the discovering of the Higgs boson, are outlined.
description: 9 pages, 10 figures, proceedings of the conference PHYSICS IN COLLISION, Annecy, France, 26 - 29 june 2007
Storing images in warm atomic vapor
Creators: name: Shuker, M.
name: Firstenberg, O.
name: Pugatch, R.
name: Ron, A.
name: Davidson, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Reversible and coherent storage of light in atomic medium is a key-stone of future quantum information applications. In this work, arbitrary two-dimensional images are slowed and stored in warm atomic vapor for up to 30 $μ$s, utilizing electromagnetically induced transparency. Both the intensity and the phase patterns of the optical field are maintained. The main limitation on the storage resolution and duration is found to be the diffusion of atoms. A techniqueanalogous to phase-shift lithography is employed to diminish the effect of diffusion on the visibility of the reconstructed image.
EasyFL: A Low-code Federated Learning Platform For Dummies
Creators: name: Zhuang, Weiming
name: Gan, Xin
name: Wen, Yonggang
name: Zhang, Shuai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Academia and industry have developed several platforms to support the popular privacy-preserving distributed learning method -- Federated Learning (FL). However, these platforms are complex to use and require a deep understanding of FL, which imposes high barriers to entry for beginners, limits the productivity of researchers, and compromises deployment efficiency. In this paper, we propose the first low-code FL platform, EasyFL, to enable users with various levels of expertise to experiment and prototype FL applications with little coding. We achieve this goal while ensuring great flexibility and extensibility for customization by unifying simple API design, modular design, and granular training flow abstraction. With only a few lines of code, EasyFL empowers them with many out-of-the-box functionalities to accelerate experimentation and deployment. These practical functionalities are heterogeneity simulation, comprehensive tracking, distributed training optimization, and seamless deployment. They are proposed based on challenges identified in the proposed FL life cycle. Compared with other platforms, EasyFL not only requires just three lines of code (at least 10x lesser) to build a vanilla FL application but also incurs lower training overhead. Besides, our evaluations demonstrate that EasyFL expedites distributed training by 1.5x. It also improves the efficiency of deployment. We believe that EasyFL will increase the productivity of researchers and democratize FL to wider audiences.
Investigations of the Non-Linear LMC Cepheid Period-Luminosity Relation with Testimator and Schwarz Information Criterion Methods
Creators: name: Kanbur, S. M.
name: Ngeow, C.
name: Nanthakumar, A.
name: Stevens, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the linearity versus non-linearity of the Large Magellanic Cloud (LMC) Cepheid period-luminosity (P-L) relation using two statistical approaches not previously applied to this problem: the testimator method and the Schwarz Information Criterion (SIC). The testimator method is extended to multiple stages for the first time, shown to be unbiased and the variance of the estimated slope can be proved to be smaller than the standard slope estimated from linear regression theory. The Schwarz Information Criterion (also known as the Bayesian Information Criterion) is more conservative than the Akaike Information Criterion and tends to choose lower order models. By using simulated data sets, we verify that these statistical techniques can be used to detect intrinsically linear and/or non-linear P-L relations. These methods are then applied to independent LMC Cepheid data sets from the OGLE project and the MACHO project, respectively. Our results imply that there is a change of slope in longer period ranges for all of the data sets. This strongly supports previous results, obtained from independent statistical tests, that the observed LMC P-L relation is non-linear with a break period at/around 10 days.
description: 9 pages, 5 figures and 3 tables, PASP accepted
A note on the k-tuple domination number of graphs
Creators: name: Martinez, Abel Cabrera
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: O5C69

description: In a graph $G$, a vertex dominates itself and its neighbours. A set $D\subseteq V(G)$ is said to be a $k$-tuple dominating set of $G$ if $D$ dominates every vertex of $G$ at least $k$ times. The minimum cardinality among all $k$-tuple dominating sets is the $k$-tuple domination number of $G$. In this paper, we provide new bounds on this parameter. Some of these bounds generalize other ones that have been given for the case $k=2$. In addition, we improve two well-known lower bounds on the $k$-tuple domination number.