cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 2 of Generation and identification of a conditional knockout allele for the PSMD11 gene in mice
Creators: name: Zhao, Linlin
name: Zhao, Jinming
name: Zhang, Yingying
name: Wang, Lele
name: Zuo, Longyan
name: Niu, Airu
name: Zhang, Wei
name: Xue, Xia
name: Zhao, Suhong
name: Sun, Chao
name: Li, Kailin
name: Wang, Jue
name: Bian, Zhimin
name: Zhao, Xiaogang
name: Saur, Dieter
name: Seidler, Barbara
name: Wang, Chuanxin
name: Qi, Tonggang
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Astronomical and Space Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2.
One-dimensional flat bands and Dirac cones in narrow zigzag dice lattice ribbons
Creators: name: Hao, Lei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that four narrow zigzag dice lattice ribbons, which have the minimal widths among their separate categories, constitute a unique collection of systems to study physics related to one-dimensional Dirac cones and flat bands. In zero magnetic field, all three combinations, including only Dirac cones, only flat bands, coexisting Dirac cones and flat bands, are realized in the low-energy band structures of one or two of the four ribbons. In particular, we identify flat bands and Dirac cones corresponding to the edge states of wide ribbons. In a perpendicular magnetic field that gives half a flux quantum per elementary rhombus, two of the four minimal ribbons have fully pinched spectrum, and dynamical evolutions from initially localized wave packets always lead to compact Aharonov-Bohm (AB) cages. The experimental realizations of these narrow zigzag dice lattice ribbons, and the opportunities of exploring novel single-body and many-body physics therein are discussed.
description: 21 pages, 6 figures
Improving hospital care for patients who use illicit drugs in Vancouver, Canada
Creators: name: Ti, Lianping
Publisher: name: University of British Columbia
Year: 2015

description: Background: People who use illicit drugs (PWUD) experience a number of health-related harms that often lead to frequent hospitalizations. However, there exists little scientific evidence that has explored utilization and retention in hospital care, including leaving hospital against medical advice (AMA), among this population. The objective of this thesis is to provide evidence to improve hospital care for PWUD by first, identifying individual and contextual factors associated with leaving hospital AMA and other hospital-related experiences; and, second, to use these findings to develop and evaluate novel approaches to minimizing the risks and harms that PWUD experience in hospital settings. Methods: This dissertation draws on data collected from two open prospective cohort studies of HIV-positive and HIV-negative PWUD in Vancouver, Canada. These data were confidentially linked to a hospital discharge database as well as comprehensive records of HIV treatment and related clinical outcomes through a clinical monitoring laboratory. A variety of longitudinal and cross-sectional analytic techniques were used to examine the impact of intersecting individual and contextual factors on various hospital service outcomes. Results: This dissertation identified hospitals as a risk environment for PWUD, given the high prevalence of hospital discharge AMA and active illicit drug use in hospitals. The study findings highlighted various risk and protective factors for leaving hospital AMA, and discussed the negative consequences of being denied pain medication on illicit drug use in hospitals. The findings from this dissertation also point to novel strategies that may address these issues, including the implementation of an adult HIV/AIDS integrated health program operating in proximity to a hospital to minimize hospital discharge AMA among HIV-positive PWUD, as well as the potential for an in-hospital supervised injection facility (SIF) to reduce the harms associated with illicit drug use in hospital. Conclusion: Despite this setting of universal access to healthcare, there are individual- and contextual-level factors that play a pivotal role in shaping utilization and retention in hospital care among PWUD. The collective findings of this dissertation offer insights into how integrated harm reduction-based interventions may mitigate the risks associated with leaving hospital AMA and active illicit drug use in hospitals.
AutoCure: Automated Tabular Data Curation Technique for ML Pipelines
Creators: name: Abdelaal, Mohamed
name: Koparde, Rashmi
name: Schoening, Harald
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Machine learning algorithms have become increasingly prevalent in multiple domains, such as autonomous driving, healthcare, and finance. In such domains, data preparation remains a significant challenge in developing accurate models, requiring significant expertise and time investment to search the huge search space of well-suited data curation and transformation tools. To address this challenge, we present AutoCure, a novel and configuration-free data curation pipeline that improves the quality of tabular data. Unlike traditional data curation methods, AutoCure synthetically enhances the density of the clean data fraction through an adaptive ensemble-based error detection method and a data augmentation module. In practice, AutoCure can be integrated with open source tools, e.g., Auto-sklearn, H2O, and TPOT, to promote the democratization of machine learning. As a proof of concept, we provide a comparative evaluation of AutoCure against 28 combinations of traditional data curation tools, demonstrating superior performance and predictive accuracy without user intervention. Our evaluation shows that AutoCure is an effective approach to automating data preparation and improving the accuracy of machine learning models.
The Euclidean Algorithm for Generalized Minimum Distance Decoding of Reed-Solomon Codes
Creators: name: Kampf, Sabine
name: Bossert, Martin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper presents a method to merge Generalized Minimum Distance decoding of Reed-Solomon codes with the extended Euclidean algorithm. By merge, we mean that the steps taken to perform the Generalized Minimum Distance decoding are similar to those performed by the extended Euclidean algorithm. The resulting algorithm has a complexity of O(n^2).
Neutral Order Parameters in Metallic Criticality in d=2+1 from a Hairy Electron Star
Creators: name: Edalati, Mohammad
name: Lo, Ka Wai
name: Phillips, Philip W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use holography to study the spontaneous condensation of a neutral order parameter in a (2+1)-dimensional field theory at zero-temperature and finite density, dual to the electron star background of Hartnoll and Tavanfar. An appealing feature of this field theory is the emergence of an IR Lifshitz fixed-point with a finite dynamical critical exponent $z$, which is due to the strong interaction between critical bosonic degrees of freedom and a finite density of fermions (metallic quantum criticality). We show that under some circumstances the electron star background develops a neutral scalar hair whose holographic interpretation is that the boundary field theory undergoes a quantum phase transition, with a Berezinski-Kosterlitz-Thouless character, to a phase with a neutral order parameter. Including the backreaction of the bulk neutral scalar on the background, we argue that the two phases across the quantum critical point have different $z$, a novelty that exists in certain quantum phase transitions in condensed matter systems. We also analyze the system at finite temperature and find that the phase transition becomes, as expected, second-order. Embedding the neutral scalar into a higher form, a variety of interesting phases could potentially be realized for the boundary field theory. Examples which are of particular interest to condensed matter physics include an antiferromagnetic phase where a vector condenses and break the spin symmetry, a quadrupole nematic phase which involves the condensation of a symmetric traceless tensor breaking rotational symmetry, or different phases of a system with competing order parameters.
description: 16pages, 10 figures
Exceptional points treatment of cavity spectroscopies
Creators: name: Mukamel, Shaul
name: Li, Anqi
name: Galperin, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The infrared response of a system of two vibrational modes in a cavity is calculated by an effective non-Hermitian Hamiltonian derived by employing the nonequilibrium Green's functions (NEGF) formalism. Degeneracies of the Hamiltonian (exceptional points, EP) widely employed in theoretical analysis of optical cavity spectroscopies are used in an approximate treatment and compared with the full NEGF. Qualitative limitations of the EP treatment are explained by examining the approximations employed in the calculation.
description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 158, 154106 (2023) and may be found at https://doi.org/10.1063/5.0142022 Copyright (2023) Authors. This article is distributed under a Creative Commons Attribution (CC BY) License
MOESM26 of siRNAs regulate DNA methylation and interfere with gene and lncRNA expression in the heterozygous polyploid switchgrass
Creators: name: Yan, Haidong
name: Bombarely, Aureliano
name: Xu, Bin
name: Frazier, Taylor
name: Wang, Chengran
name: Chen, Peilin
name: Chen, Jing
name: Hasing, Tomas
name: Cui, Chenming
name: Zhang, Xinquan
name: Zhao, Bingyu
name: Huang, Linkai
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Plant Biology

description: Additional file 26: Table S15. Regression analysis and 10-fold cross-validation between DNA methylation and lncRNA expression based on zero hurdle model.
Constructing a Model Transport Equation for a Massless Bose Gas and its Analytic Solution
Creators: name: Latyshev, A. V.
name: Yushkanov, A. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81, 81V80, 81V99

description: A model kinetic equation is constructed for the transport of a massless Bose gas. This equation is applied to solution of the boundary value problem for the transport of radiation in the half-space occupied by a dispersive medium that is in local thermal equilibrium with the radiation. It is shown that the difference in temperature between the dispersive medium and the incident radiation depends substantially on the character of the scattering properties of the particles of the medium.
description: 17 pages, 0 figures
K. Alex Müller and his important role in ferroelectricity
Creators: name: Bussmann-Holder, Annette
name: Keller, Hugo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences
subject: J.2
subject: Review

description: In this review we concentrate on the work of K. Alex Müller in connection with his activities on oxide perovskites and ferroelectrics which were central to his research career long before he successfully discovered the first high temperature superconductor (HTSC) together with J. G. Bednorz in 1986. Not accidentally, but taking his long experience in perovskite ferroelectrics into account, the first HTSC was an oxide perovskite which had never been considered before to be superconducting.
description: 8 pages, 4 figures
MOESM25 of siRNAs regulate DNA methylation and interfere with gene and lncRNA expression in the heterozygous polyploid switchgrass
Creators: name: Yan, Haidong
name: Bombarely, Aureliano
name: Xu, Bin
name: Frazier, Taylor
name: Wang, Chengran
name: Chen, Peilin
name: Chen, Jing
name: Hasing, Tomas
name: Cui, Chenming
name: Zhang, Xinquan
name: Zhao, Bingyu
name: Huang, Linkai
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Additional file 25: Table S14. The correlation analysis between methylation levels and lncRNA expression.
Inflation in asymptotically safe f(R) theory
Creators: name: Contillo, Adriano
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the existence of inflationary solutions in a class of renormalization group improved polynomial f(R) theories, which have been studied recently in the context of the asymptotic safety scenario for quantum gravity. These theories seem to possess a nontrivial ultraviolet fixed point, where the dimensionful couplings scale according to their canonical dimensionality. Assuming that the cutoff is proportional to the Hubble parameter, we obtain modified Friedmann equations which admit both power law and exponential solutions. We establish that for sufficiently high order polynomial the solutions are reliable, in the sense that considering still higher order polynomials is very unlikely to change the solution.
description: Presented at 14th Conference on Recent Developments in Gravity: NEB 14, Ioannina, Greece, 8-11 Jun 2010
Reformulating CTR Prediction: Learning Invariant Feature Interactions for Recommendation
Creators: name: Zhang, Yang
name: Shi, Tianhao
name: Feng, Fuli
name: Wang, Wenjie
name: Wang, Dingxian
name: He, Xiangnan
name: Zhang, Yongdong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Click-Through Rate (CTR) prediction plays a core role in recommender systems, serving as the final-stage filter to rank items for a user. The key to addressing the CTR task is learning feature interactions that are useful for prediction, which is typically achieved by fitting historical click data with the Empirical Risk Minimization (ERM) paradigm. Representative methods include Factorization Machines and Deep Interest Network, which have achieved wide success in industrial applications. However, such a manner inevitably learns unstable feature interactions, i.e., the ones that exhibit strong correlations in historical data but generalize poorly for future serving. In this work, we reformulate the CTR task -- instead of pursuing ERM on historical data, we split the historical data chronologically into several periods (a.k.a, environments), aiming to learn feature interactions that are stable across periods. Such feature interactions are supposed to generalize better to predict future behavior data. Nevertheless, a technical challenge is that existing invariant learning solutions like Invariant Risk Minimization are not applicable, since the click data entangles both environment-invariant and environment-specific correlations. To address this dilemma, we propose Disentangled Invariant Learning (DIL) which disentangles feature embeddings to capture the two types of correlations separately. To improve the modeling efficiency, we further design LightDIL which performs the disentanglement at the higher level of the feature field. Extensive experiments demonstrate the effectiveness of DIL in learning stable feature interactions for CTR. We release the code at https://github.com/zyang1580/DIL.
description: 11 pages, 6 Postscript figures, to be published in SIGIR2023
Indigenous federations in the Peruvian Amazon : perspectives from the Ashéninka and Yine-Yami peoples
Creators: name: Vasquez Fernandez, Andrea Milagros
Publisher: name: University of British Columbia
Year: 2015

description: The emergence of a globalized model of development in Peru, based on extraction of natural resources, has led to the rise of indigenous movements. One of the strategies to address the negative impacts of public policies created to support this model is through the creation of indigenous federations. Indigenous federations have emerged as a strategy of indigenous peoples to make their voices heard and determine their own future. Scholars, federation representatives, and community members themselves have identified the strengthened relationships between representatives and community members as a major challenge for indigenous movements. The question that frames this study is: how could representation by indigenous federations be improved, from the points of view of indigenous peoples’ epistemologies, ontologies, axiologies, and methodologies? In alliance with six Ashéninka and Yine-Yami indigenous communities and their local federations, we investigate their federational system of self-government. Through innovative and culturally sensitive methods of co-creating knowledge using emancipatory theories, this study addresses two objectives: (1) to identify factors that contribute indigenous federations’ representatives to effectively achieve communities’ objectives; and (2) to articulate recommendations to improve indigenous federations. These two objectives were attained with input from community members and federation representatives. Results show that the principal factors that explain representatives’ sources of capacity to address member communities’ objectives are primarily to establish close interpersonal relationships and to cultivate spiritual, ethical, and moral behaviours between representatives and community members. Five recommendations are identified by Ashéninka and Yine-Yami peoples to enhance their institutions: (1) to define the jurisdiction of the federations; (2) to formalize the federations; (3) to improve the processes of interaction; (4) to strengthen their self-determined indigenous economies; and (5) to increase political participation. The results inform current indigenous politics that aim to have a larger influence on the regional and even national formulation of public policies that impact the Peruvian Amazon. The recognition and practice of a pluri-national state and the need to establish more meaningful indicators of ethno-development are important in the formulation of the factors influencing a positive change and a way to address current and future conflicts around use of natural resources.
A note on the theory of fast money flow dynamics
Creators: name: Sokolov, Andrey
name: Kieu, Tien
name: Melatos, Andrew
Publisher: name: arXiv
Year: 2010
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: The gauge theory of arbitrage was introduced by Ilinski in [arXiv:hep-th/9710148] and applied to fast money flows in [arXiv:cond-mat/9902044]. The theory of fast money flow dynamics attempts to model the evolution of currency exchange rates and stock prices on short, e.g.\ intra-day, time scales. It has been used to explain some of the heuristic trading rules, known as technical analysis, that are used by professional traders in the equity and foreign exchange markets. A critique of some of the underlying assumptions of the gauge theory of arbitrage was presented by Sornette in [arXiv:cond-mat/9804045]. In this paper, we present a critique of the theory of fast money flow dynamics, which was not examined by Sornette. We demonstrate that the choice of the input parameters used in [arXiv:cond-mat/9902044] results in sinusoidal oscillations of the exchange rate, in conflict with the results presented in [arXiv:cond-mat/9902044]. We also find that the dynamics predicted by the theory are generally unstable in most realistic situations, with the exchange rate tending to zero or infinity exponentially.
description: accepted for publication in The European Physical Journal B
Quantum Entanglement on Black Hole Horizons in String Theory and Holography
Creators: name: Dabholkar, Atish
name: Moitra, Upamanyu
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute the exact one-loop partition function of $\mathbb{Z}_N$ orbifolds of Euclidean BTZ black hole with the aim to compute the entanglement entropy of the black hole horizon in string theory as a function of the mass and spin of the black hole and the $\mathrm{AdS}_3$ radius. We analyze the tachyonic contribution to the modular integrand for the partition function known for odd integers $N>1$ and show that it admits an analytic continuation resulting in a finite answer for the modular integral in the physical region $0< N \leq 1$. We discuss the flat space limit and the relevance of this computation for quantum gravity near black hole horizons and holography in relation to the thermal entropy.
description: 28 pages; v2: Published in JHEP, minor improvements
Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect
Creators: name: Liu, Jie
name: Sun, Qing-feng
name: Xie, X. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the figure of merit of a quantum dot (QD) in the Coulomb blockade regime. It is found that the figure of merit $ZT$ may be quite high if only single energy level in the QD is considered. On the other hand, with two or multi energy levels in the QD and without the Coulomb interaction, the $ZT$ is strongly suppressed by the bipolar effect due to small level spacing. However, in the presence of the Coulomb interaction, the effective level spacing is enlarged and the bipolar effect is weakened, resulting in $ZT$ to be considerably high. Thus, it is more likely to find a high efficient thermoelectric QDs with large Coulomb interaction. By using the parameters for a typical QD, the $ZT$ can reach over 5.
description: 6 pages, 4 figures
The Derivative Expansion at Small Mass for the Spinor Effective Action
Creators: name: Dunne, Gerald V.
name: Huet, Adolfo
name: Hur, Jin
name: Min, Hyunsoo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the small mass limit of the one-loop spinor effective action, comparing the derivative expansion approximation with exact numerical results that are obtained from an extension to spinor theories of the partial-wave-cutoff method. In this approach one can compute numerically the renormalized one-loop effective action, for radially separable gauge field background fields in spinor QED. We highlight an important difference between the small mass limit of the derivative expansion approximation for spinor and scalar theories.
description: 16 pp, 6 figures
Additional file 1 of Respiratory infections during lithium and valproate medication: a within-individual prospective study of 50,000 patients with bipolar disorder
Creators: name: Landén, Mikael
name: Larsson, Henrik
name: Lichtenstein, Paul
name: Westin, Johan
name: Song, Jie
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health

description: Additional file 1: Table S1. Characteristics of individuals with bipolar disorder by different treatment.
The Nature of Starbursts : II. The Duration of Starbursts in Dwarf Galaxies
Creators: name: McQuinn, Kristen B. W.
name: Skillman, Evan D.
name: Cannon, John M.
name: Dalcanton, Julianne
name: Dolphin, Andrew
name: Hidalgo-Rodríguez, Sebastian
name: Holtzman, Jon
name: Stark, David
name: Weisz, Daniel
name: Williams, Benjamin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The starburst phenomenon can shape the evolution of the host galaxy and the surrounding intergalactic medium. The extent of the evolutionary impact is partly determined by the duration of the starburst, which has a direct correlation with both the amount of stellar feedback and the development of galactic winds, particularly for smaller mass dwarf systems. We measure the duration of starbursts in twenty nearby, ongoing, and "fossil" starbursts in dwarf galaxies based on the recent star formation histories derived from resolved stellar population data obtained with the Hubble Space Telescope. Contrary to the shorter times of 3-10 Myr often cited, the starburst durations we measure range from 450 - 650 Myr in fifteen of the dwarf galaxies and up to 1.3 Gyr in four galaxies; these longer durations are comparable to or longer than the dynamical timescales for each system. The same feedback from massive stars that may quench the flickering SF does not disrupt the overall burst event in our sample of galaxies. While five galaxies present fossil bursts, fifteen galaxies show ongoing bursts and thus the final durations may be longer than we report here for these systems. One galaxy shows a burst that has been ongoing for only 20 Myr; we are likely seeing the beginning of a burst event in this system. Using the duration of the starbursts, we calculate that the bursts deposited 10^(53.9)-10^(57.2) ergs of energy into the interstellar medium through stellar winds and supernovae and produced 3%-26% of the host galaxy's mass.
description: 28 pages, 4 figures
Characterization of epithelioid sarcoma using massively parallel DNA and RNA sequencing and in vitro models
Creators: name: Jamshidi, Farzad
Publisher: name: University of British Columbia
Year: 2015

description: Epithelioid sarcoma is a soft tissue tumor with an unusual predilection for the distal extremities in young adults. Despite wide-margin resections the 10-year survival is in the range of 50%. The biology of epithelioid sarcoma remains incompletely understood, but one key feature is the loss of SMARCB1. We use whole genome sequencing of five cases of epithelioid sarcoma matched to normal germline DNA, looking for mutations other than SMARCB1. These index cases are supplemented with three additional tumors and three cell lines that undergo whole transcriptome sequencing and are analyzed for somatic point mutations, copy number changes, translocations, and expression patterns. Unlike the situation in other SMARCB1 inactivated tumors, we find a complex genome with a relatively high mutational burden. However, aberrations of SMARCB1 remain the only consistent mutation. Some cases do not show biallelic DNA-level inactivation of this gene which leads us to examine other possible second-hit silencing mechanisms. With the significance attributed to SMARCB1 loss in the genomic landscape of epithelioid sarcoma, we explore two approaches, namely EZH2 and SMARCA4 inhibitions, to specifically exploit this abnormality and suggest novel therapeutic options.
Meson mass spectrum using the Cayley-Dickson algebra
Creators: name: Kuwata, S.
name: Omoto, A.
name: Ishihara, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: 17B81

description: From an injective map between the mass of the meson 16-plet and the eigenvalue of the right multiplication in the Cayley-Dickson algebra, we obtain the mass formula as 2 m_{D_s} = m_{eta_c} + m_{eta'}, which is in excellent agreement with experiment.
description: 9 pages, 1 figure, to be published in Nuovo Cimento B
The Future of Time: UTC and the Leap Second
Creators: name: Finkleman, David
name: Allen, Steve
name: Seago, John
name: Seaman, Rob
name: Seidelmann, P. Kenneth
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: Before atomic timekeeping, clocks were set to the skies. But starting in 1972, radio signals began broadcasting atomic seconds and leap seconds have occasionally been added to that stream of atomic seconds to keep the signals synchronized with the actual rotation of Earth. Such adjustments were considered necessary because Earth's rotation is less regular than atomic timekeeping. In January 2012, a United Nations-affiliated organization could permanently break this link by redefining Coordinated Universal Time. To understand the importance of this potential change, it's important to understand the history of human timekeeping.
Induced Cosmological Anisotropies and CMB Anomalies by a non-Abelian Gauge-Gravity Interaction
Creators: name: Lee, Bum-Hoon
name: Lee, Hocheol
name: Lee, Wonwoo
name: Nilsson, Nils A.
name: Thakur, Somyadip
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a non-abelian cousin of the model presented in \cite{Lee:2022rtz} which induces cosmological anisotropies on top of standard FLRW geometry. This is in some sense doing a cosmological mean field approximation, where the mean field cosmological model under consideration would be the standard FLRW, and the induced anisotropies are small perturbative corrections on top of it. Here we mostly focus on the non-abelian $SU(2)$ gauge fields coupled to the gravity to generate the anisotropies, which can be a viable model for the axion-like particle (ALP) dark sector. The induced anisotropies are consequences of the non-trivial back-reaction of the gauge fields on the gravity sector, and by a clever choice of the parametrization, one can generate the Bianchi model we have studied in this note. We also show that the anisotropies influence the Sachs-Wolfe effect and we discuss the implications.
description: 33 pages, 19 figures; updated references. Accepted for publication in Physics of the Dark Universe
The Effect of the Disorder on the Longitudinal Resistance of a Graphene p-n Junction in Quantum Hall Regime
Creators: name: Chen, Jiang-chai
name: Yeung, T. C. Au
name: Sun, Qing-feng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The longitudinal resistances of a six-terminal graphene p-n junction under a perpendicular magnetic field are investigated. Because of the chirality of the Hall edge states, the longitudinal resistances on top and bottom edges of the graphene ribbon are not equal. In the presence of suitable disorder, the top-edge and bottom-edge resistances well show the plateau structures in the both unipolar and bipolar regimes and the plateau values are determined by the Landau filling factors only. These plateau structures are in excellent agreement with the recent experiment. For the unipolar junction, the resistance plateaus emerge in the absence of impurity and they are destroyed by strong disorder. But for the bipolar junction, the resistances are very large without the plateau structures in the clean junction. The disorder can strongly reduce the resistances and leads the formation of the resistance plateaus, due to the mixture of the Hall edge states in virtue of the disorder. In addition, the size effect of the junction on the resistances is studied and some extra resistance plateaus are found in the long graphene junction case. This is explained by the fact that only part of the edge states participate in the full mixing.
description: 7 pages, 5 figures
Theoretical investigation of magnetoelectric effects in Ba2CoGe2O7
Creators: name: Yamauchi, Kunihiko
name: Barone, Paolo
name: Picozzi, Silvia
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A joint theoretical approach, combining macroscopic symmetry analysis with microscopic methods (density functional theory and model cluster Hamiltonian), is employed to shed light on magnetoelectricity in Ba2CoGe2O7. We show that the recently reported experimental trend of polarization guided by magnetic field can be predicted on the basis of phenomenological Landau theory. From the microscopic side, Ba2CoGe2O7 emerges as a prototype of a class of magnetoelectrics, where the cross coupling between magnetic and dipolar degrees of freedom needs, as main ingredients, the on-site spin-orbit coupling and the spin-dependent O p - Co d hybridization, along with structural constraints related to the noncentrosymmetric structural symmetry and the peculiar configuration of CoO4 tetrahedrons.
description: 5 pages, 4 figures, submitted for publication
title: ‘We’re just talking’: Cultural Representations of Assisted Dying in Contemporary British and American Narratives
Creators: name: Cook, Morven
Publisher: name: University of Liverpool Repository
Year: 2525

description: This thesis examines contemporary British and American narratives to understand how they represent assisted dying and the significance of certain formal, thematic, stylistic, and structural features. Formed around the idea of ‘talking’, this thesis highlights how discourses and narratives shape, and are shaped by, attitudes, behaviours, and practices in the ‘real world.’ The idea of ‘talking’ also works as an organisational concept, with each chapter focused on voice and authorship; reflecting on who is telling the story, whose voices are heard, whose perspectives are privileged, and whose are absent, ignored, and side-lined.
Good reductions of Shimura varieties of Hodge type in arbitrary unramified mixed characteristic. Part I
Creators: name: Vasiu, Adrian
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G10, 11G18, 14F30, 14G35, 14G40, 14K10, 14J10

description: We prove the existence of good smooth integral models of Shimura varieties of Hodge type in arbitrary unramified mixed characteristic $(0,p)$. As a first application we provide a smooth solution (answer) to a conjecture (question) of Langlands for Shimura varieties of Hodge type. As a second application we prove the existence in arbitrary unramified mixed characteristic $(0,p)$ of integral canonical models of projective Shimura varieties of Hodge type with respect to h--hyperspecial subgroups as pro-étale covers of Néron models; this forms progress towards the proof of conjectures of Milne and Reimann. Though the second application was known before in some cases, its proof is new and more of a principle.
description: 87 pages. Final version, to appear in Mathematische Nachrichten (most alignment issues kept loose to match with the layout of the journal)
Climate dynamics and fluid mechanics: Natural variability and related uncertainties
Creators: name: Ghil, Michael
name: Chekroun, Mickaël D.
name: Simonnet, Eric
Publisher: name: arXiv
Year: 2010
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37B55, 37G15, 34F05, 34C37, 34D30, 37C20, 37C15, 37C29, 37E10, 37E45, 34D08, 37D20, 76U05, 35Q35, 86A05, 86-06

description: The purpose of this review-and-research paper is twofold: (i) to review the role played in climate dynamics by fluid-dynamical models; and (ii) to contribute to the understanding and reduction of the uncertainties in future climate-change projections. To illustrate the first point, we focus on the large-scale, wind-driven flow of the mid-latitude oceans which contribute in a crucial way to Earth's climate, and to changes therein. We study the low-frequency variability (LFV) of the wind-driven, double-gyre circulation in mid-latitude ocean basins, via the bifurcation sequence that leads from steady states through periodic solutions and on to the chaotic, irregular flows documented in the observations. This sequence involves local, pitchfork and Hopf bifurcations, as well as global, homoclinic ones. The natural climate variability induced by the LFV of the ocean circulation is but one of the causes of uncertainties in climate projections. Another major cause of such uncertainties could reside in the structural instability in the topological sense, of the equations governing climate dynamics, including but not restricted to those of atmospheric and ocean dynamics. We propose a novel approach to understand, and possibly reduce, these uncertainties, based on the concepts and methods of random dynamical systems theory. As a very first step, we study the effect of noise on the topological classes of the Arnol'd family of circle maps, a paradigmatic model of frequency locking as occurring in the nonlinear interactions between the El Nino-Southern Oscillations (ENSO) and the seasonal cycle. It is shown that the maps' fine-grained resonant landscape is smoothed by the noise, thus permitting their coarse-grained classification. This result is consistent with stabilizing effects of stochastic parametrization obtained in modeling of ENSO phenomenon via some general circulation models.
description: Invited survey paper for Special Issue on The Euler Equations: 250 Years On, in Physica D: Nonlinear phenomena
Additional file 2 of Family-based improvement for health literacy among the Yi nationality (FAMILY) in Liangshan: protocol of an open cohort stepped wedge cluster randomized controlled trial
Creators: name: Hu, Lin
name: Zhu, Wenhui
name: Yu, Jie
name: Chen, Ying
name: Yan, Jingmin
name: Liao, Qiang
name: Zhang, Tao
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 2: SPIRIT checklist.
Theorems on ground-state phase transitions in Kohn-Sham models given by the Coulomb density functional
Creators: name: Kusakabe, Koichi
name: Maruyama, Isao
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Some theorems on derivatives of the Coulomb density functional with respect to the coupling constant $λ$ are given. Consider an electron density $n_{GS}({\bf r})$ given by a ground state. A model Fermion system with the reduced coupling constant, $λ<1$, is defined to reproduce $n_{GS}({\bf r})$ and the ground state energy. Fixing the charge density, possible phase transitions as level crossings detected in a value of the reduced density functional happen only at discrete points along the $λ$ axis. If the density is $v$-representable also for $λ<1$, accumulation of phase transition points is forbidden when $λ\rightarrow 1$. Relevance of the theorems for the multi-reference density functional theory is discussed.
description: 19 pages
Commuting differential operators of rank 2 with polynomial coefficients
Creators: name: Oganesyan, Vardan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we study self-adjoint commuting ordinary differential operators with polynomial coefficients. These operators define commutative subalgebras of the first Weyl algebra. We find new examples of commuting operators of rank 2.
description: 12 pages
Habitat use and connectivity for Canada lynx in the North Cascade Mountains, Washington
Creators: name: Vanbianchi, Carmen Marie
Publisher: name: University of British Columbia
Year: 2015

description: Canada lynx (Lynx canadensis) populations in the contiguous US comprise the southern extent of lynx range. Lynx were federally listed as Threatened in 2000, and they survive in sub-boreal forests of lower habitat quality than in the core of lynx range in Canada and Alaska. Southern lynx habitat is fragmented by topography, and increasingly by human impacts. Wildfires, which are projected to increase in frequency, size and intensity under climate change, also fragment southern lynx habitat. I used Global Positioning System radio-collar data from 17 lynx in the North Cascade Mountains of Washington collected during 2007 through 2013 to explore southern lynx habitat use in a fragmented landscape impacted by fire. I used Random Forest models to analyze core hunting, resting, and denning habitat, and the habitats lynx select while traveling between patches of core habitat. I also describe lynx use in new and old burns. Finally, based on the core and travel habitat models, I used Least Cost Path modelling to map connectivity linkages for lynx in the North Cascades. While selecting core habitat, lynx used spruce (Picea engelmannii)-fir (Abies lasiocarpa), lodgepole pine (Pinus contorta), and mixed sub-boreal-Douglas fir (Pseudotsuga menziesii) forests, and avoided dry forests and forest openings including new burns. While selecting travel habitat, lynx used a wider range of habitats, including new burns where fire skips and residual trees offered cover. In newly burned areas, lynx used areas near the burn perimeter, fire skips, and residual live trees, but avoided severely burned areas. In old burns, lynx used areas where cool and moist microclimates encouraged dense vegetative growth, regardless of the regenerating forest type or burn severity. My connectivity model reveals important linkages for lynx, connecting areas of currently occupied lynx habitat divided by the Methow Valley and by the 2006 Tripod Burn. The model also revealed linkages connecting currently occupied areas to areas historically occupied by lynx south of Lake Chelan.
WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System
Creators: name: Gelino, Christopher R.
name: Kirkpatrick, J. Davy
name: Cushing, Michael C.
name: Eisenhardt, Peter R.
name: Griffith, Roger L.
name: Mainzer, Amanda K.
name: Marsh, Kenneth A.
name: Skrutskie, Michael F.
name: Wright, Edward L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The multiplicity properties of brown dwarfs are critical empirical constraints for formation theories, while multiples themselves provide unique opportunities to test evolutionary and atmospheric models and examine empirical trends. Studies using high-resolution imaging can not only uncover faint companions, but they can also be used to determine dynamical masses through long-term monitoring of binary systems. We have begun a search for the coolest brown dwarfs using preliminary processing of data from the Wide-field Infrared Survey Explorer (WISE) and have confirmed many of the candidates as late-type T dwarfs. In order to search for companions to these objects, we are conducting observations using the Laser Guide Star Adaptive Optics system on Keck II. Here we present the first results of that search, including a T5 binary with nearly equal mass components and a faint companion to a T8.5 dwarf with an estimated spectral type of T9.
description: 22 pages, 8 figures, accepted for publication in AJ
Common eigenfunctions of commuting differential operators of rank 2
Creators: name: Oganesyan, Vardan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we find coomon eigenfunctions of commuting differential operators of rank 2 with polynomial coefficients in some partial cases.
description: 6 pages
Explicit characterization of some commuting differential operators of rank 2
Creators: name: Oganesyan, Vardan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper we consider differential opeartor L=d^4_x + u(x). We find the commutativity condition for operator L with a differential operator M of order 4g+2, where L and M are operators of rank 2. Some examples are constructed. These examples don't commute with differential opeartors of odd order.
Stabilized Radiation Pressure Dominated Ion Acceleration from Thin-foil Targets
Creators: name: Chen, Min
name: Kumar, Naveen
name: Pukhov, Alexander
Publisher: name: arXiv
Year: 2010
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We study transverse and longitudinal electron heating effects on the target stability and the ion spectra in the radiation pressure dominated regime of ion acceleration by means of multi dimensional particle-in-cell (PIC) simulations. Efficient ion acceleration occurs when the longitudinal electron temperature is kept as low as possible. However, tailoring of the transverse electron temperature is required in view of suppressing the transverse instability, which can keep the target structure intact for longer duration during the acceleration stage. We suggest using the surface erosion of the target to increase the transverse temperature, which improves both the final peak energy and the spectral quality of the ions in comparison with a normal flat target.
description: 5 pages, 3 pictures