cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vector-valued L_p convergence of orthogonal series and Lagrange interpolation
Creators: name: König, Hermann
name: Nielsen, Niels J.
Publisher: name: arXiv
Year: 1992
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42C15 (46E40)

description: We give necessary and sufficient conditions for interpolation inequalities of the type considered by Marcinkiewicz and Zygmund to be true in the case of Banach space-valued polynomials and Jacobi weights and nodes. We also study the vector-valued expansion problem of $L_p$-functions in terms of Jacobi polynomials and consider the question of unconditional convergence. The notion of type $p$ with respect to orthonormal systems leads to some characterizations of Hilbert spaces. It is also shown that various vector-valued Jacobi means are equivalent.
Vancouver Island, the settlers and investor's opportunity : fruit growing, poultry raising, mixed farming, timber, coal, iron, marble, copper, building stone, fisheries, deep sea harbors, government land, cheap electric power, water powers, manufactures, ship building. The treasure island, the most equable climate in the world, unequalled living conditions, the sportsman's, tourist's, and automobilist's paradise, that section of Canada richest in natural resources
Creators: name: Vancouver Island Development League. Victoria Branch
Publisher: name: Victoria : [publisher not identified]
Year: 2015

description: "Also: with caption title Vancouver Island, British Columbia, Canada, the land of the heart's desire. [1911?] 32 p. illus. Cover missing from copy seen. Revised, updated and enlarged. Leaf (22 x 14 cm.) laid in, giving information on house domestics and farm help. Also: with cover title Vancouver Island, British Columbia, Canada, the farmer's home; fruit growing, poultry raising . . . [1912?] 40 p. illus., map (on back cover). 24 cm. Caption title: Vancouver Island, British Columbia, Canada, the land of the heart's desire. Revised, updated, and enlarged. Also: with cover title Vancouver Island, British Columbia, Canada, the farmer's home; berry growing, vegetable raising, ... [1913?] 32 p. Revised." -- Edwards, M. H., Lort, J. C. R., & Carmichael, W. J. (1975). A bibliography of British Columbia: Years of growth, 1900-1950. Victoria, BC: University of Victoria, p. 298.
N=2 topological gauge theory, the Euler characteristic of moduli spaces, and the Casson invariant
Creators: name: Blau, Matthias
name: Thompson, George
Publisher: name: arXiv
Year: 1991
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss gauge theory with a topological N=2 symmetry. This theory captures the de Rham complex and Riemannian geometry of some underlying moduli space $\cal M$ and the partition function equals the Euler number of $\cal M$. We explicitly deal with moduli spaces of instantons and of flat connections in two and three dimensions. To motivate our constructions we explain the relation between the Mathai-Quillen formalism and supersymmetric quantum mechanics and introduce a new kind of supersymmetric quantum mechanics based on the Gauss-Codazzi equations. We interpret the gauge theory actions from the Atiyah-Jeffrey point of view and relate them to supersymmetric quantum mechanics on spaces of connections. As a consequence of these considerations we propose the Euler number of the moduli space of flat connections as a generalization to arbitrary three-manifolds of the Casson invariant. We also comment on the possibility of constructing a topological version of the Penner matrix model.
description: 50 p. (with a4.sty: 40 p.)
Prevention of peritoneal adhesions after gynecological surgery : a systematic review
Creators: name: Schäfer, Sebastian Daniel
name: Alkatout, Ibrahim
name: Dornhöfer, Nadja
name: Herrmann, Joerg
name: Klapdor, Rüdiger
name: Meinhold-Heerlein, Ivo
name: Meszaros, Jozsef
name: Mustea, Alexander
name: Oppelt, Peter
name: Wallwiener, Markus
name: Krämer, Bernhard
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Importance: The formation of adhesions after gynecological surgery not only has detrimental impacts on those affected, including pain, obstruction, and infertility, but also imposes a high economic burden on healthcare systems worldwide. Objective: The aim of this review was to evaluate the adhesion prevention potential of all currently available adhesion barriers for gynecological surgery. Evidence acquisition: We systematically searched MEDLINE and CENTRAL databases for randomized controlled trials (RCTs) on the use of adhesion barriers as compared with peritoneal irrigation or no treatment in gynecological surgery. Only RCTs with second-look surgery to evaluate adhesions in the pelvic/abdominal (but not intrauterine) cavity were included. Results: We included 45 RCTs with a total of 4,120 patients examining a total of 10 unique types of barriers in second-look gynecological surgery. While RCTs on oxidized regenerated cellulose (significant improvement in 6 of 14 trials), polyethylene glycol with/without other agents (4/10), hyaluronic acid and hyaluronate + carboxymethylcellulose (7/10), icodextrin (1/3), dextran (0/3), fibrin-containing agents (1/2), expanded polytetrafluoroethylene (1/1), N,O-carboxymethylchitosan (0/1), and modified starch (1/1) overall showed inconsistent findings, results for expanded polytetrafluoroethylene, hyaluronic acid, and modified starch yielded the greatest improvements regarding adhesion reduction at 75%, 0–67%, and 85%, respectively. Conclusions and relevance: Best results for adhesion prevention were reported after applying Gore-Tex Surgical Membrane, hyaluronic acid, and 4DryField®. As Gore-Tex Surgical Membrane is nonabsorbable, it is associated with a greater risk of new adhesion formation due to second-look surgery to remove the product. 4DryField® yielded the greatest improvement in adhesion score compared to all other barrier agents (85%). For better comparability, future studies should use standardized scores and put more emphasis on patient-reported outcome measures, such as pain and infertility.
Quantum Affine Algebras and Universal $R$-Matrix with Spectral Parameter
Creators: name: Zhang, Yao-Zhong
name: Gould, Mark D.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using the previous obtained universal $R$-matrix for the quantized nontwisted affine Lie algebras $U_q(A_1^{(1)})$ and $U_q(A_2^{(1)})$, we determine the explicitly spectral-dependent universal $R$-matrix for the corresponding quantum Lie algebras $U_q(A_1)$ and $U_q(A_2)$. As their applications, we reproduce the well-known results in the fundamental representations and we also derive an extreamly explicit formula of the spectral-dependent $R$-matrix for the adjoint representation of $U_q(A_2)$, the simplest non-trival case when the tensor product decomposition of the representation with itself has finite multiplicity.
description: 10 pages
Cyclic variations with twice the accretion disk precession period in the old nova V603 Aquilae
Creators: name: Bruch, Albert
name: Cook, Lewis M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A dense series of long and high time resolution light curves of the old nova V603 Aql, covering 22 nights (19 of which are consecutive), are analyzed in order to identify and characterize variations on the time scale of hours and days. The well known 3.5 hour modulation, observed many times in the past and considered to be due to a long lasting, albeit not entirely stable superhump, is recovered at a period of 0.1453 days and an amplitude of 0.062 mag. Most interesting, however, is the detection of highly significant brightness variations with an amplitude of 0.050 mag and a period of 5.85 days which is to a very high precision equal to twice the beat period between the orbital and the superhump period. The latter is generally interpreted as the precession period of an eccentric accretion disk. The origin of these long term variations remains unknown.
Millisecond Pulsars, TeV Halos, and Implications For The Galactic Center Gamma-Ray Excess
Creators: name: Hooper, Dan
name: Linden, Tim
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Observations by HAWC indicate that many young pulsars (including Geminga and Monogem) are surrounded by spatially extended, multi-TeV emitting regions. It is not currently known, however, whether TeV emission is also produced by recycled, millisecond pulsars (MSPs). In this study, we perform a stacked analysis of 24 MSPs within HAWC's field-of-view, finding between 2.6-3.2 sigma evidence that these sources are, in fact, surrounded by TeV halos. The efficiency with which these MSPs produce TeV halos is similar to that exhibited by young pulsars. This result suggests that several dozen MSPs will ultimately be detectable by HAWC, including many "invisible" pulsars without radio beams oriented in our direction. The TeV halos of unresolved MSPs could also dominate the TeV-scale diffuse emission observed at high galactic latitudes. We also discuss the possibility that TeV and radio observations could be used to constrain the population of MSPs that is present in the inner Milky Way, thereby providing us with a new way to test the hypothesis that MSPs are responsible for the Galactic Center GeV excess.
description: 17 pages, 5 figures
Sums of algebraic trace functions twisted by arithmetic functions
Creators: name: Korolev, M. A.
name: Shparlinski, I. E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11L05, 11T23

description: We obtain new bounds for short sums of isotypic trace functions associated to some sheaf modulo prime $p$ of bounded conductor, twisted by the Mobius function and also by the generalised divisor function. These trace functions include Kloosterman sums and several other classical number theoretic objects. Our bounds are nontrivial for intervals of length at least $p^{1/2+\varepsilon}$ with an arbitrary fixed $\varepsilon >0$, which is shorter than the length at least $p^{3/4+\varepsilon}$ in the case of the Mobius function and at least $p^{2/3+\varepsilon}$ in the case of the divisor function required in recent results of {É}.~Fouvry, E.~Kowalski and P.~Michel (2014) and E.~Kowalski, P. ~Michel and W.~Sawin (2018), respectively.
description: 19 pages, 38 references
Profound sexual dysfunction among patients with hidradenitis suppurativa : a sross-sectional study
Creators: name: Krajewski, Piotr K.
name: Strobel-Guht, Alexandra
name: Heise, Marcus
name: [Und Viele Weitere]
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Introduction: Sexual health, a critical aspect of overall well-being, is often compromised in individuals with chronic disorders. Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition that mainly affects intertriginous areas, potentially impacting sexual health as a result of its specific symptoms and psychosocial burden. Methods: This cross-sectional study utilized data from the EpiCAi project, focusing on 199 patients with HS. Participants completed digital questionnaires assessing sexual health via sexspecific instruments: the Female Sexual Function Index (FSFI) for women and the International Index of Erectile Function (IIEF) for men, alongside different psychosocial scales. The disease severity was assessed using the Hurley stage and the Lesion Identification Scheme for Acne Inversa (LISAI). Results: The majority of the participants reported impaired sexual health, with significant clinical sexual dysfunctions noted in 71.8% of women (FSFI score < 26) and erectile dysfunction in 63.8% of men. Sexual dysfunction was associated with several factors, including age, and marital status. Psychosocial factors, notably depression and quality of life, showed strong correlations with sexual health outcomes. Notably, women over 40 and those treated with biologics reported more severe dysfunction, while among men, employment status significantly influenced sexual health. Conclusions: HS profoundly affects the sexual health of both male and female patients, with significant impacts on their quality of life and psychological well-being. The findings underscore the necessity for healthcare providers to address sexual health proactively in the management of HS, considering both physical symptoms and psychosocial impacts. This holistic approach is essential for improving patient outcomes and overall quality of life.
Gauge Field Theories on Riemann Surfaces
Creators: name: Ferrari, Franco
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper the free gauge field theories on a Riemann surface of any genus are quantized in the covariant gauge. The propagators of the gauge fields are explicitly derived and their properties are analysed in details. As an application, the correlation functions of a Yang-Mills field theory with gauge group $SU(N)$ are computed at the lowest order.
description: 22 pages, Plain TeX, to appear in Helv. Phys. Acta
SPONDYLODISKITIS: MODERN APPROACHES TO DIAGNOSIS
Creators: name: Gafarov, Jakhongir
Publisher: name: Zenodo
Year: 2024

description: At the same time, the diagnosis of spondylodiscitis is difficult and often occurs with a significant delay after the appearance of the first symptoms, which is due to the rarity of the disease, the non-specificity of its manifestations , and therefore the lack of disease . awareness of doctors on issues of infectious lesions of the spine. The current problem with determining the etiology of the disease leads to irrational antibiotic therapy, long-term treatment and increased costs. Surgical treatment of spondylodiscitis is delayed due to the lack of strict guidelines. Key words: spondylodiscitis , infection, diagnosis, biopsy, treatment, surgery.
Thirtieth annual report of the Victoria British Columbia Board of Trade : together with various appendices, list of members, office bearers, commercial charges, etc. : October, 1909
Creators: name: Victoria (B.C.). Board Of Trade
Publisher: name: Victoria : Colonist Printing and Publishing Co.
Year: 2015

description: "Vol. 1-22 as Annual report of the British Columbia Board of Trade. Continued as Report of the Victoria Chamber of Commerce. Binder's title: British Columbia Board of Trade. Annual reports. Includes survey of business, fisheries, industries, and agriculture; surveys labour, immigration, trade outlook, and gives tables, statistics, and financial statements in appendices." -- Lowther, B. J., & Laing, M. (1968). A bibliography of British Columbia: Laying the foundations, 1849-1899. Victoria, BC: University of Victoria, p. 69.
Magnetic Field Transfer From A Hidden Sector
Creators: name: Kamada, Kohei
name: Tsai, Yuhsin
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Primordial magnetic fields in the dark sector can be transferred to magnetic fields in the visible sector due to a gauge kinetic mixing term. We show that the transfer occurs when the evolution of magnetic fields is dominated by dissipation due to finite electric conductivity, and does not occur at later times if the magnetic fields evolve according to magnetohydrodynamics scaling laws. The efficiency of the transfer is suppressed by not only the gauge kinetic mixing coupling but also the ratio between the large electric conductivity and the typical momentum of the magnetic fields. We find that the transfer gives nonzero visible magnetic fields today. However, without possible dynamo amplifications, the field transfer is not efficient enough to obtain the intergalactic magnetic fields suggested by the gamma-ray observations, although there are plenty of possibilities for efficient dark magnetogenesis, which are experimentally unconstrained.
description: 26 pages, 2 figures
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 1033
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1033, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1033, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Postnatal development of the mouse larynx (Riede et al., 2020)
Creators: name: Riede, Tobias
name: Coyne, Megan
name: Tafoya, Blake
name: Baab, Karen L.
Publisher: name: ASHA journals
Year: 2020
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology
subject: Anatomy

description: Purpose: The larynx plays a role in swallowing, respiration, and voice production. All three functions change during ontogeny. We investigated ontogenetic shape changes using a mouse model to inform our understanding of how laryngeal form and function are integrated. We understand the characterization of developmental changes to larynx anatomy as a critical step toward using rodent models to study human vocal communication disorders.Method: Contrast-enhanced micro computed tomography image stacks were used to generate three-dimensional reconstructions of the CD-1 mouse (Mus musculus) laryngeal cartilaginous framework. Then, we quantified size and shape in four age groups: pups, weanlings, young, and old adults using a combination of landmark and linear morphometrics. We analyzed postnatal patterns of growth and shape in the laryngeal skeleton, as well as morphological integration among four laryngeal cartilages using geometric morphometric methods. Acoustic analysis of vocal patterns was employed to investigate morphological and functional integration.Results: Four cartilages scaled with negative allometry on body mass. Additionally, thyroid, arytenoid, and epiglottic cartilages, but not the cricoid cartilage, showed shape change associated with developmental age. A test for modularity between the four cartilages suggests greater independence of thyroid cartilage shape, hinting at the importance of embryological origin during postnatal development. Finally, mean fundamental frequency, but not fundamental frequency range, varied predictably with size.Conclusion: In a mouse model, the four main laryngeal cartilages do not develop uniformly throughout the first 12 months of life. High-dimensional shape analysis effectively quantified variation in shape across development and in relation to size, as well as clarifying patterns of covariation in shape among cartilages and possibly the ventral pouch.
Supplemental Material S1. Methods.
Riede, T., Coyne, M., Tafoya, B., & Baab, K. L. (2020). Postnatal development of the mouse larynx: Negative allometry age-dependent shape changes, morphological integration and a size-dependent spectral feature. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2020_JSLHR-20-00070
Short time-scale optical variability properties of the largest AGN sample observed with Kepler/K2
Creators: name: Aranzana, E.
name: Kording, E.
name: Uttley, P.
name: Scaringi, S.
name: Bloemen, S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first short time-scale ($\sim$hours to days) optical variability study of a large sample of Active Galactic Nuclei (AGN) observed with the Kepler/K2 mission. The sample contains 252 AGN observed over four campaigns with $\sim 30$ minute cadence selected from the Million Quasar Catalogue with R magnitude $< 19$. We performed time series analysis to determine their variability properties by means of the power spectral densities (PSDs) and applied Monte Carlo techniques to find the best model parameters that fit the observed power spectra. A power-law model is sufficient to describe all the PSDs of our sample. A variety of power-law slopes were found indicating that there is not a universal slope for all AGN. We find that the rest-frame amplitude variability in the frequency range of $6\times10^{-6}-10^{-4}$ Hz varies from $1-10$ % with an average of 1.7 %. We explore correlations between the variability amplitude and key parameters of the AGN, finding a significant correlation of rest-frame short-term variability amplitude with redshift. We attribute this effect to the known "bluer when brighter" variability of quasars combined with the fixed bandpass of Kepler data. This study also enables us to distinguish between Seyferts and Blazars and confirm AGN candidates. For our study we have compared results obtained from light curves extracted using different aperture sizes and with and without de-trending. We find that limited de-trending of the optimal photometric precision light curve is the best approach, although some systematic effects still remain present.
description: Published in MNRAS 16 February 2018
Additional file 1: of Comparison of influenza disease burden in older populations of Hong Kong and Brisbane: the impact of influenza and pneumococcal vaccination
Creators: name: Yang, Lin
name: Chan, King
name: Wong, Chit
name: Chiu, Susan
name: Magalhaes, Ricardo
name: Thach, Thuan
name: Peiris, Joseph
name: Clements, Archie
name: Hu, Wenbiao
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Appendix 1. Additional information on data sources and statistical analysis. Appendix 2. Study periods defined for Hong Kong and Brisbane. Appendix 3. Time series plots of weekly numbers of cause-specific mortality data of Hong Kong (black line) and Brisbane (gray line). Appendix 4. Time series plots of weekly numbers of hospital admissions of Hong Kong (black line) and Brisbane (gray line). Hospitalization data of Brisbane are not available in the post-pandemic period. Appendix 5. Time series plots of weekly mean temperature and relative humidity Hong Kong (black line) and Brisbane (gray line). Appendix 6. Annual excess rates of mortality and hospitalizations associated with influenza per 1000,000 population in Hong Kong and Brisbane, 2001â 2012. (DOCX 484 kb)
Matrix models of 2d gravity
Creators: name: Ginsparg, P.
Publisher: name: arXiv
Year: 1991
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: These are introductory lectures for a general audience that give an overview of the subject of matrix models and their application to random surfaces, 2d gravity, and string theory. They are intentionally 1.5 years out of date. 0. Canned Diatribe, Introduction, and Apologies 1. Discretized surfaces, matrix models, and the continuum limit 2. All genus partition functions 3. KdV equations and other models 4. Quick tour of Liouville theory
description: Trieste Lectures (July, 1991), 40pp
The Expanded Exercise Addiction Inventory (EAI-3) : towards reliable and international screening of exercise-related dysfunction
Creators: name: Granziol, Umberto
name: Stoll, Oliver
name: Schipfer, Melanie
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 613

description: Exercise addiction (EA) refers to excessive exercise, lack of control, and health risks. The Exercise Addiction Inventory (EAI) is one of the most widely used tools in its assessment. However, the cross-cultural psychometric properties of the EAI could be improved because it misses three pathological patterns, including guilt, exercise despite injury, and experienced harm. Therefore, the present study tested the psychometric properties of the expanded EAI (EAI-3) in a large international sample. The EAI-3 was administered to 1931 physically active adult exercisers speaking five languages (Chinese, German, Italian, Japanese, and Turkish) and other measures for obsessive-compulsive behavior, eating disorders, and personality traits. The assessment structure and reliability of the EAI-3 were tested with factorial analyses and through measurement invariance across languages and sex. Finally, a cutoff point for dysfunction-proneness was calculated. The EAI-3 comprised two factors, reflecting the positive and pathological sides of exercise. The structure had excellent reliability and goodness-of-fit indices and configural and metric invariances of the scale were supported. However, three items caused violations in scalar invariance. The results of partial measurement invariance testing suggested an adequate fit for the data. Following sensitivity and specificity analysis, the EAI-3’s cutoff score was 34 out of a maximum score of 48. This preliminary study suggests that the EAI-3 is a promising tool for screening EA in an international sample, with a robust and reliable structure comparable across languages and sex. In addition, the proposed cutoff could pave the way toward a consensus on a threshold to screen for EA.
Quantum affine algebras and universal R-matrix with spectral parameter, II
Creators: name: Zhang, Yao-Zhong
name: Gould, Mark D.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper is an extended version of our previous short letter \cite{ZG2} and is attempted to give a detailed account for the results presented in that paper. Let $U_q({\cal G}^{(1)})$ be the quantized nontwisted affine Lie algebra and $U_q({\cal G})$ be the corresponding quantum simple Lie algebra. Using the previous obtained universal $R$-matrix for $U_q(A_1^{(1)})$ and $U_q(A_2^{(1)})$, we determine the explicitly spectral-dependent universal $R$-matrix for $U_q(A_1)$ and $U_q(A_2)$. We apply these spectral-dependent universal $R$-matrix to some concrete representations. We then reproduce the well-known results for the fundamental representations and we are also able to derive for the first time the extreamly explicit and compact formula of the spectral-dependent $R$-matrix for the adjoint representation of $U_q(A_2)$, the simplest nontrival case when the tensor product of the representations is {\em not} multiplicity-free.
description: 22 pages
Towards the Chern-Weil homomormism in non-commutative differential geometry
Creators: name: Cap, Andreas
name: Michor, Peter W.
Publisher: name: arXiv
Year: 1992
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 58B30

description: In this short review article we sketch some developments which should ultimately lead to the analogy of the Chern-Weil homomorphism for principal bundles in the realm of non-commutative differential geometry. Principal bundles there should have Hopf algebras as structure `cogroups'. Since the usual machinery of Lie algebras, connection forms, etc\., just is not available in this setting, we base our approach on the Frölicher--Nijenhuis bracket.
Sub-photospheric fluctuations in magnetized radiative envelopes: contribution from unstable magnetosonic waves
Creators: name: Sen, Koushik
name: Fernández, Rodrigo
name: Socrates, Aristotle
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the excitation of unstable magnetosonic waves in the radiative envelopes of intermediate- and high-mass stars with a magnetic field of ~kG strength. Wind clumping close to the star and microturbulence can often be accounted for when including small-scale, sub-photospheric density or velocity perturbations. Compressional waves - with wavelengths comparable to or shorter than the gas pressure scale height - can be destabilized by the radiative flux in optically-thick media when a magnetic field is present, in a process called the Radiation-Driven Magneto-Acoustic Instability (RMI). The instability does not require radiation or magnetic pressure to dominate over gas pressure, and acts independently of sub-surface convection zones. Here we evaluate the conditions for the RMI to operate on a grid of stellar models covering a mass range $3-40M_\odot$ at solar metallicity. For a uniform 1kG magnetic field, fast magnetosonic modes are unstable down to an optical depth of a few tens, while unstable slow modes extend beyond the depth of the iron convection zone. The qualitative behavior is robust to magnetic field strength variations by a factor of a few. When combining our findings with previous results for the saturation amplitude of the RMI, we predict velocity fluctuations in the range ~0.1-10 km/s. These amplitudes are a monotonically increasing function of the ratio of radiation to gas pressure, or alternatively, of the zero-age main sequence mass.
description: Accepted by MNRAS
Canonical Quantization of the Maxwell-Chern-Simons Theory in the Coulomb Gauge
Creators: name: Devecchi, F. P.
name: Fleck, M.
name: Girotti, H. O.
name: Gomes, M.
name: da Silva, A. J.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Maxwell-Chern-Simons theory is canonically quantized in the Coulomb gauge by using the Dirac bracket quantization procedure. The determination of the Coulomb gauge polarization vector turns out to be intrincate. A set of quantum Poincaré densities obeying the Dirac-Schwinger algebra, and, therefore, free of anomalies, is constructed. The peculiar analytical structure of the polarization vector is shown to be at the root for the existence of spin of the massive gauge quanta.The Coulomb gauge Feynman rules are used to compute the Möller scattering amplitude in the lowest order of perturbation theory. The result coincides with that obtained by using covariant Feynman rules. This proof of equivalence is, afterwards, extended to all orders of perturbation theory. The so called infrared safe photon propagator emerges as an effective propagator which allows for replacing all the terms in the interaction Hamiltonian of the Coulomb gauge by the standard field-current minimal interaction Hamiltonian.
description: 21 pages, typeset in REVTEX, figures not included
Prediction of resistance to bevacizumab plus FOLFOX in metastatic colorectal cancer : results of the prospective multicenter PERMAD trial
Creators: name: Seufferlein, Thomas
name: Büchner-Steudel, Petra
name: [Und Viele Weitere]
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Background: Anti-vascular endothelial growth factor (VEGF) monoclonal antibodies (mAbs) are widely used for tumor treatment, including metastatic colorectal cancer (mCRC). So far, there are no biomarkers that reliably predict resistance to anti-VEGF mAbs like bevacizumab. A biomarker-guided strategy for early and accurate assessment of resistance could avoid the use of non-effective treatment and improve patient outcomes. We hypothesized that repeated analysis of multiple cytokines and angiogenic growth factors (CAFs) before and during treatment using machine learning could provide an accurate and earlier, i.e., 100 days before conventional radiologic staging, prediction of resistance to first-line mCRC treatment with FOLFOX plus bevacizumab. Patients and methods: 15 German and Austrian centers prospectively recruited 50 mCRC patients receiving FOLFOX plus bevacizumab as first-line treatment. Plasma samples were collected every two weeks until radiologic progression (RECIST 1.1) as determined by CT scans performed every 2 months. 102 pre-selected CAFs were centrally analyzed using a cytokine multiplex assay (Luminex, Myriad RBM). Results: Using random forests, we developed a predictive machine learning model that discriminated between the situations of “no progress within 100 days before radiological progress” and “progress within 100 days before radiological progress”. We could further identify a combination of ten out of the 102 CAF markers, which fulfilled this task with 78.2% accuracy, 71.8% sensitivity, and 82.5% specificity. Conclusions: We identified a CAF marker combination that indicates treatment resistance to FOLFOX plus bevacizumab in patients with mCRC within 100 days prior to radiologic progress.
Positive charges promote the recognition of proteins by the chaperone SlyD from Escherichia coli
Creators: name: Lindemeier, Daniel
name: Graubner, Wenke
name: Mehner-Breitfeld, Denise
name: Malešević, Miroslav
name: Brüser, Thomas
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 572

description: SlyD is a widely-occurring prokaryotic FKBP-family prolyl isomerase with an additional chaperone domain. Often, such as in Escherichia coli, a third domain is found at its C-terminus that binds nickel and provides it for nickel-enzyme biogenesis. SlyD has been found to bind signal peptides of proteins that are translocated by the Tat pathway, a system for the transport of folded proteins across membranes. Using peptide arrays to analyze these signal peptide interactions, we found that SlyD interacted only with positively charged peptides, with a preference for arginines over lysines, and large hydrophobic residues enhanced binding. Especially a twin-arginine motif was recognized, a pair of highly conserved arginines adjacent to a stretch of hydrophobic residues. Using isothermal titration calorimetry (ITC) with purified SlyD and a signal peptide-containing model Tat substrate, we could show that the wild type twin-arginine signal peptide was bound with higher affinity than an RR>KK mutated variant, confirming that positive charges are recognized by SlyD, with a preference of arginines over lysines. The specific role of negative charges of the chaperone domain surface and of hydrophobic residues in the chaperone active site was further analyzed by ITC of mutated SlyD variants. Our data show that the supposed key hydrophobic residues of the active site are indeed crucial for binding, and that binding is influenced by negative charges on the chaperone domain. Recognition of positive charges is likely achieved by a large negatively charged surface region of the chaperone domain, which is highly conserved although individual positions are variable.
The Penrose process, superradiance and ergoregion instabilities
Creators: name: Vicente, Rodrigo
name: Cardoso, Vitor
name: Lopes, Jorge C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Superradiant scattering is a radiation enhancement process that takes place in many contexts, and which has recently found exciting applications in astro and particle physics. In the framework of curved spacetime physics, it has been associated with the classical Penrose process for particles. Superradiance is usually also associated with bosonic fields around geometries with ergoregions and horizons. These notions are in clear tension however: the Penrose process occurs for horizonless geometries, and particles are composed of fermions. Here, we resolve the tension in its different aspects, by showing that (i) superradiance occurs for self-interacting fermions on flat spacetime; (ii) superradiance occurs also for horizonless geometries, where it leads to an ergoregion instability. Ultracompact, horizonless geometries will usually respond with echoes of growing amplitude, until rotational (or electrostatic) energy is extracted from the object; (iii) the Fourier-domain analysis leads to absence of superradiance when horizons are not present. We elucidate why this analysis fails to give meaningful results; (iv) finally, we show that superradiant, ergoregion instabilities have a particle analog of similar growth timescales and which can power the formation of a structure outside a compact, rotating star.
description: 20 pages, accepted for publication in PRD
N=2 Superstrings with (1,2m) Spacetime Signature
Creators: name: Lu, H.
name: Pope, C. N.
name: Wang, X. J.
name: Xu, K. W.
Publisher: name: arXiv
Year: 1991
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the $N=2$ superstring in $d=2D\ge6$ real dimensions, with criticality achieved by including background charges in the two real time directions, exhibits a ``coordinate-freezing'' phenomenon, whereby the momentum in one of the two time directions is constrained to take a specific value for each physical state. This effectively removes this time direction as a physical coordinate, leaving the theory with $(1,d-2)$ real spacetime signature. Norm calculations for low-lying physical states suggest that the theory is ghost free.
description: 8 pages
Report on the library of the Legislative Assembly for year 1909
Creators: name: Provincial Archives Of British Columbia
Publisher: name: Victoria : R. Wolfenden
Year: 2015

description: "The reports for 1893/94-1909 include the Archives under the heading, 'Northwest collection.' The Provincial Archives became separate from the Provincial Library in 1908, and published reports separately in 1910 and 1913. The report for 1921 was entitled Report of the Provincial Library and Archives. Reports were printed for the years 1893/94, 1895, 1896,1897, 1898, 1899-1900, 1900-1901, 1902-1903, 1907, 1909, 1910, 1913, with 1921 being a joint report. Most reports are also in the Clerk's papers, and those for 1910, 1913 and 1921 are also in the Sessional papers of British Columbia. See especially following reports which contain material not published elsewhere: 1900-1901, Appendix 4: 'Titles of works relating to the history and discovery of British Columbia and the North-west portion of America'; 1910, Appendix A: 'Papers relating to Vancouver Island,' 'Papers relating to the colony of British Columbia,' and 'Papers relating to the province of British Columbia.' Appendix B contains important letters, transcripts and miscellaneous papers. 1913, section 2: 'Papers relating to the colonization of Vancouver Island,' with letters by Lieut. Adam Dundas, Sir George Simpson, Charles Enderby, James E. Fitzgerald, W. Colquhoun Grant, Right Rev. Modeste Demers, James Douglas and David Thompson. The same section has a 'Report on Vancouver Island.'" -- Lowther, B. J., & Laing, M. (1968). A bibliography of British Columbia: Laying the foundations, 1849-1899. Victoria, BC: University of Victoria, p. 122.
Model-Building for Fractional Superstrings
Creators: name: Dienes, Keith R.
name: Tye, S. -H. Henry
Publisher: name: arXiv
Year: 1991
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Fractional superstrings are recently-proposed generalizations of the traditional superstrings and heterotic strings. They have critical spacetime dimensions which are less than ten, and in this paper we investigate model-building for the heterotic versions of these new theories. We concentrate on the cases with critical spacetime dimensions four and six, and find that a correspondence can be drawn between the new fractional superstring models and a special subset of the traditional heterotic string models. This allows us to generate the partition functions of the new models, and demonstrate that their number is indeed relatively limited. It also appears that these strings have uniquely natural compactifications to lower dimensions. In particular, the fractional superstring with critical dimension six has a natural interpretation in four-dimensional spacetime.
description: (Paper is between 70-80 pages, depending on fonts used. A macro is enclosed for printing in a two-page landscape format to halve the total number of printed pages.)
Cooper-pair splitting in two parallel InAs nanowires
Creators: name: Baba, Shoji
name: Jünger, Christian
name: Matsuo, Sadashige
name: Baumgartner, Andreas
name: Sato, Yosuke
name: Kamata, Hiroshi
name: Li, Kan
name: Jeppesen, Sören
name: Samuelson, Lars
name: Xu, Hongqi
name: Schönenberger, Christian
name: Tarucha, Seigo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the fabrication and electrical characterization of an InAs double - nanowire (NW) device consisting of two closely placed parallel NWs coupled to a common superconducting electrode on one side and individual normal metal leads on the other. In this new type of device we detect Cooper-pair splitting (CPS) with a sizeable efficiency of correlated currents in both NWs. In contrast to earlier experiments, where CPS was realized in a single NW, demonstrating an intrawire electron pairing mediated by the superconductor (SC), our experiment demonstrates an inter- wire interaction mediated by the common SC. The latter is the key for the realization of zero-magnetic field Majorana bound states, or Parafermions; in NWs and therefore constitutes a milestone towards topological superconductivity. In addition, we observe transport resonances that occur only in the superconducting state, which we tentatively attribute to Andreev Bound states and/or Yu-Shiba resonances that form in the proximitized section of one NW.
Angiodysplasia Detection and Localization Using Deep Convolutional Neural Networks
Creators: name: Shvets, Alexey
name: Iglovikov, Vladimir
name: Rakhlin, Alexander
name: Kalinin, Alexandr A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Accurate detection and localization for angiodysplasia lesions is an important problem in early stage diagnostics of gastrointestinal bleeding and anemia. Gold-standard for angiodysplasia detection and localization is performed using wireless capsule endoscopy. This pill-like device is able to produce thousand of high enough resolution images during one passage through gastrointestinal tract. In this paper we present our winning solution for MICCAI 2017 Endoscopic Vision SubChallenge: Angiodysplasia Detection and Localization its further improvements over the state-of-the-art results using several novel deep neural network architectures. It address the binary segmentation problem, where every pixel in an image is labeled as an angiodysplasia lesions or background. Then, we analyze connected component of each predicted mask. Based on the analysis we developed a classifier that predict angiodysplasia lesions (binary variable) and a detector for their localization (center of a component). In this setting, our approach outperforms other methods in every task subcategory for angiodysplasia detection and localization thereby providing state-of-the-art results for these problems. The source code for our solution is made publicly available at https://github.com/ternaus/angiodysplasia-segmentatio
description: 12 pages, 6 figures
Hydraulic resistance in open-channel flows over self-affine rough beds
Creators: name: Stewart, Mark T.
name: Cameron, Stuart M.
name: Nikora, Vladimir I.
name: Zampiron, Andrea
name: Marusic, Ivan
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Hematology

description: Knowledge of hydraulic resistance of single-valued self-affine fractal surfaces remains very limited. To advance this area, a set of experiments have been conducted in two separate open-channel flumes to investigate the effects of the spectral structure of bed roughness on the drag at the bed. Three self-affine fractal roughness patterns, based on a simple but realistic three-range spectral model, have been investigated with spectral scaling exponents of −1, −5/3 and −3, respectively. The different widths of the flumes and a range of flow depths also afforded an opportunity to consider effects of the flow aspect ratio and relative submergence. The results show that with all else equal the friction factor increases as the spectral exponent decreases. In addition, the relationship between the spectral exponent and effective slope of the roughness is demonstrated, for the first time. Aspect ratio effects on the friction factor within the studied range were found to be negligible.
Resolution Convergence in Cosmological Hydrodynamical Simulations Using Adaptive Mesh Refinement
Creators: name: Snaith, Owain N.
name: Park, Changbom
name: Kim, Juhan
name: Rosdahl, Joakim
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have explored the evolution of gas distributions from cosmological simulations carried out using the RAMSES adaptive mesh refinement (AMR) code, to explore the effects of resolution on cosmological hydrodynamical simulations. It is vital to understand the effect of both the resolution of initial conditions and the final resolution of the simulation. Lower initial resolution simulations tend to produce smaller numbers of low mass structures. This will strongly affect the assembly history of objects, and has the same effect of simulating different cosmologies. The resolution of initial conditions is an important factor in simulations, even with a fixed maximum spatial resolution. The power spectrum of gas in simulations using AMR diverges strongly from the fixed grid approach - with more power on small scales in the AMR simulations - even at fixed physical resolution and also produces offsets in the star formation at specific epochs. This is because before certain times the upper grid levels are held back to maintain approximately fixed physical resolution, and to mimic the natural evolution of dark matter only simulations. Although the impact of hold back falls with increasing spatial and initial-condition resolutions, the offsets in the star formation remain down to a spatial resolution of 1 kpc. These offsets are of order of 10-20%, which is below the uncertainty in the implemented physics but are expected to affect the detailed properties of galaxies. We have implemented a new grid-hold-back approach to minimize the impact of hold back on the star formation rate.
description: 23 pages, 22 figures, 1 table, accepted for publication in MNRAS