cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 3 of Establishing extended pluripotent stem cells from human urine cells
Creators: name: Hao, Chunfang
name: Chu, Shilong
name: Quan, Xiongzhi
name: Zhou, Tiancheng
name: Shi, Junjie
name: Huang, Xiaofen
name: Wu, Guangming
name: Tortorella, Micky Daniel
name: Pei, Duanqing
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 3: Figure S3. The process of integration-free iPSCs induction from human urine-derived cells. A The process of human urine cells was inducted to be iPSCs. pEP4 EO2S ET2Kand pCEP4-miR302-367were electroporated into human urine cells, and the process of cell shape changing. B The monoclonal hUC-iPSCs by 4I induction medium and karyotype analysis. C The monoclonal hUC-iPSCs by R5 induction medium and karyotype analysis. Scale bar: 100 μm.
Discrete Gauging in Coulomb branches of Three Dimensional $\mathcal{N}=4$ Supersymmetric Gauge Theories
Creators: name: Hanany, Amihay
name: Zajac, Anton
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper tests a conjecture on discrete non-Abelian gauging of 3d $\mathcal{N} = 4$ supersymmetric quiver gauge theories. Given a parent quiver with a bouquet of $n$ nodes of rank $1$, invariant under a discrete $S_n$ global symmetry, one can construct a daughter quiver where the bouquet is substituted by a single adjoint $n$ node. Based on the main conjecture in this paper, the daughter quiver corresponds to a theory where the $S_n$ discrete global symmetry is gauged and the new Coulomb branch is a non-Abelian orbifold of the parent Coulomb branch. We demonstrate and test the conjecture for three simply laced families of bouquet quivers and a non-simply laced bouquet quiver with $C_2$ factor in the global symmetry.
description: 51 pages, 38 figures
Formation of Low-Mass X-Ray Binaries. II. Common Envelope Evolution of Primordial Binaries with Extreme Mass Ratios
Creators: name: Kalogera, Vassiliki
name: Webbink, Ronald F.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the formation of low-mass X-ray binaries (LMXBs) through helium star supernovae in binary systems that have each emerged from a common-envelope phase. LMXB progenitors must satisfy a large number of evolutionary and structural constraints, which imposed under the assumption of a symmetric supernova explosion, prohibit the formation of short-period LMXBs transferring mass at sub-Eddington rates through any channel in which the intermediate progenitor of the neutron star is not completely degenerate. Barring accretion-induced collapse, the existence of such systems therefore requires that natal kicks be imparted to neutron stars. We use an analytical method to synthesize the distribution of nascent LMXBs over donor masses and orbital periods, and evaluate their birth rate and systemic velocity dispersion. Within the limitations imposed by observational incompleteness and selection effects, and our neglect of secular evolution in the LMXB state, we compare our results with observations. However, our principal objective is to evaluate how basic model parameters influence these results. We conclude that the characteristics of newborn LMXBs are primarily determined by age and stability constraints and the efficiency of magnetic braking, and are largely independent of the primordial binary population and the evolutionary history of LMXB progenitors (except for extreme values of the average kick magnitude or of the common-envelope ejection efficiency). Theoretical estimates of total LMXB birth rates are not credible, since they strongly depend on the observationally indeterminate frequency of primordial binaries with extreme mass ratios in long-period orbits.
description: 31 pages, AASTeX, 14 Figures, 2 Tables, to be published in ApJ
Investigation of semiconductor-metal heteronanostructured assemblies and their photoelectrochemical properties
Creators: name: Schlenkrich, Jakob Cornelius
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2024
Subjects: subject: photocatalysis
subject: semiconductor-metal hybrid
subject: nanoparticle-based gel
subject: photoelectrochemistry
subject: Photokatalyse
subject: Halbleiter-Metal Hybrid
subject: Nanopartikel-bastierte Gele
subject: Photoelektrochemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: To reduce carbon dioxide emissions in energy consumption, there is a need to employ renewable energy carriers with no carbon footprint. Heterogeneous catalysts accelerate chemical reactions or facilitate energetically unfavorable ones to produce such renewable energy carriers. Hydrogen, a promissing primary energy carrier, demands energy for its production, which could be sourced from electric or solar energy via electrolyzers or photocatalysts, respectively. This study focused on synthesizing and characterizing novel nanoparticle-based photocatalytic materials, utilizing CdSe and CdS semiconductors in various forms alongside metal cocatalysts. These nanoparticles can form three-dimensional porous gel-like networks, constructed through shock-freezing or chemical destabilization methods. Photoelectrochemical investigations emphasize the importance of homogeneous metal-semiconductor contact and distributed metal domains for efficient charge carrier separation. Furthermore, the effectiveness of semiconductor and semiconductor-metal hybrid gel structures in photocatalytic hydrogen production is demonstrated. Nanoparticles embedded in hydrogels facilitate efficient photocatalysis, ensuring diffusion within the network without requiring colloidal stability. Platinum as a cocatalyst significantly enhances hydrogen production rates. Moreover, the limiting factors in semiconductor-metal hybrid networks appear to be diffusion within the network or the catalytic reaction itself rather than semiconductor-metal electron transfer. Fine-tuning the distribution of metal domains is crucial for optimizing properties tailored to photocatalytic applications.
On New Conformal Field Theories with Affine Fusion Rules
Creators: name: Gepner, Doron
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Some time ago, conformal data with affine fusion rules were found. Our purpose here is to realize some of these conformal data, using systems of free bosons and parafermions. The so constructed theories have an extended $W$ algebras which are close analogues of affine algebras. Exact character formulae is given, and the realizations are shown to be full fledged unitary conformal field theories.
description: Minor correction in an example and some typos
Displaced Vertices from Hidden Glue
Creators: name: Burdman, Gustavo
name: Lichtenstein, Gabriela
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the phenomenology of glueball production and decay in theories with hidden glue. We focus on the case of folded supersymmetry (FSUSY) , where there is an unbroken $SU(3)$ gauge theory in the absence of light matter, leading to the formation of glueballs. We study their production through the annihilation of folded squarks into hidden gluons at the LHC, and model their fragmentation into glueballs. We obtain the distribution of displaced vertices, which is directly determined by the folded squark mass scale. Although here we specifically apply it to FSUSY, the procedure to model the hidden glue fragmentation into glueballs can be generalized to other similar theories.
description: 18 pages, 8 figures, references added, some clarifications and comments added
Revisiting the Galaxy Shape and Spin Alignments with the Large-Scale Tidal Field: An Effective Practical Model
Creators: name: Lee, Jounghun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: An effective practical model with two characteristic parameters is presented to describe both of the tidally induced shape and spin alignments of the galactic halos with the large-scale tidal fields. We test this model against the numerical results obtained from the Small MultiDark Planck simulation on the galactic mass scale of $0.5\le M/(10^{11}\,h^{-1}\,M_{\odot})\le 50$ at redshift $z=0$. Determining empirically the parameters from the numerical data, we demonstrate how successfully our model describes simultaneously and consistently the amplitudes and behaviors of the probability density functions of three coordinates of the shape and spin vectors in the principal frame of the large scale tidal field. Dividing the samples of the galactic halos into multiple subsamples in four different mass ranges and four different types of the cosmic web, and also varying the smoothing scale of the tidal field from $5\,h^{-1}$Mpc to $10,\ 20,\ 30\,h^{-1}$Mpc, we perform repeatedly the numerical tests with each subsample at each scale. Our model is found to match well the numerical results for all of the cases of the mass range, smoothing scale and web type and to properly capture the scale and web dependence of the spin flip phenomenon.
description: Accepted for publication in ApJ, a couple of mistakes in Section 2.1 as well as all minor typos corrected
MATHICSE Technical Report : Fast and accurate elastic analysis of laminated composite plates via isogeometric collocation and an equilibrium-based stress recovery approach
Creators: name: Patton, Alessia
name: Dufour, John-Eric
name: Antolin Sanchez, Pablo
name: Reali, Alessandro
Publisher: name: Écublens, MATHICSE
Year: 2019

description: A novel approach which combines isogeometric collocation and an equilibriumbased stress recovery technique is applied to analyze laminated composite plates. Isogeometric collocation is an appealing strong form alternative to standard Galerkin approaches, able to achieve high order convergence rates coupled with a significantly reduced computational cost. Laminated composite plates are herein conveniently modeled considering only one element through the thickness with homogenized material properties. This guarantees accurate results in terms of displacements and in-plane stress components. To recover an accurate out-of-plane stress state, equilibrium is imposed in strong form as a post-processing correction step, which requires the shape functions to be highly continuous. This continuity demand is fully granted A novel approach which combines isogeometric collocation and an equilibriumbased stress recovery technique is applied to analyze laminated composite plates. Isogeometric collocation is an appealing strong form alternative to standard Galerkin approaches, able to achieve high order convergence rates coupled with a significantly reduced computational cost. Laminated composite plates are herein conveniently modeled considering only one element through the thickness with homogenized material properties. This guarantees accurate results in terms of displacements and in-plane stress components. To recover an accurate out-of-plane stress state, equilibrium is imposed in strong form as a post-processing correction step, which requires the shape functions to be highly continuous. This continuity demand is fully granted.
MATHICSE Technical Report : On maximum volume submatrices and cross approximation for symmetric semidefinite and diagonally dominant matrices
Creators: name: Cortinovis, Alice
name: Kressner, Daniel
name: Massei, Stefano
Publisher: name: Écublens, MATHICSE
Year: 2019

description: The problem of finding a $k\times k$ submatrix of maximum volume of a matrix A is of interest in a variety of applications. For example, it yields a quasi-best low-rank approximation constructed from the rows and columns of A. We show that such a submatrix can always be chosen to be a principal submatrix if A is symmetric semidefinite or diagonally dominant. Then we analyze the low-rank approximation error returned by a greedy method for volume maximization, cross approximation with complete pivoting. Our bound for general matrices extends an existing result for symmetric semidefinite matrices and yields new error estimates for diagonally dominant matrices. In particular, for doubly diagonally dominant matrices the error is shown to remain within a modest factor of the best approximation error. We also illustrate how the application of our results to cross approximation for functions leads to new and better convergence results.
MATHICSE Technical Report : Low-rank updates and divide-andconquer methods for quadratic matrix equations
Creators: name: Kressner, Daniel
name: Kürschner, Patrick
name: Massei, Stefano
Publisher: name: Écublens, MATHICSE
Year: 2019

description: In this work, we consider two types of large-scale quadratic matrix equations: Continuous-time algebraic Riccati equations, which play a central role in optimal and robust control, and unilateral quadratic matrix equations, which arise from stochastic processes on 2D lattices and vibrating systems. We propose a simple and fast way to update the solution to such matrix equations under low-rank modifications of the coefficients. Based on this procedure, we develop a divide-and-conquer method for quadratic matrix equations with coefficients that feature a specific type of hierarchical low-rank structure, which includes banded matrices. This generalizes earlier work on linear matrix equations. Numerical experiments indicate the advantages of our newly proposed method versus iterative schemes combined with hierarchical low-rank arithmetic.
MATHICSE Technical Report : Isogeometric Analysis on V-reps: first results
Creators: name: Antolin Sanchez, Pablo
name: Buffa, Annalisa
name: Martinelli, Massimiliano
Publisher: name: Écublens, MATHICSE
Year: 2019

description: Inspired by the introduction of Volumetric Modeling via volumetric representations (V-reps) by Massarwi and Elber in 2016, in this paper we present a novel approach for the construction of isogeometric numerical methods for elliptic PDEs on trimmed geometries, seen as a special class of more general V-reps. We develop tools for approximation and local re-parametrization of trimmed elements for three dimensional problems, and we provide a theoretical framework that fully justify our algorithmic choices. We validate our approach both on two and three dimensional problems, for diffuusion and linear elasticity.
On the Coulomb Effects on the W Line Shape at LEP2
Creators: name: Khoze, V. A.
name: Stirling, W. J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One of the most powerful methods for obtaining a precision measurement of M_W at LEP2 is from direct reconstruction of the invariant mass distribution of W bosons produced in e+e- --> W+W-. We investigate the effects on the W line shape, and in particular on the average invariant mass, of phase-space and first-order Coulomb corrections. The latter are shown to have a non-negligible effect on the reconstructed mass, inducing shifts of order -20 MeV at collision energies above threshold, compared to the Born approximation cross section. The sign and magnitude of the effect can be understood in a simple model calculation in which one of the W bosons is assumed to be stable.
description: 11 pages + 4 uuencoded postscript figures. Figures 1 and 2 were incorrect in the original submission and have now been corrected
Recovering stellar population parameters via two full-spectrum fitting algorithms in the absence of model uncertainties
Creators: name: Ge, Junqiang
name: Yan, Renbin
name: Cappellari, Michele
name: Mao, Shude
name: Li, Hongyu
name: Lu, Youjun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using mock spectra based on Vazdekis/MILES library fitted within the wavelength region 3600-7350Å, we analyze the bias and scatter on the resulting physical parameters induced by the choice of fitting algorithms and observational uncertainties, but avoid effects of those model uncertainties. We consider two full-spectrum fitting codes: pPXF and STARLIGHT, in fitting for stellar population age, metallicity, mass-to-light ratio, and dust extinction. With pPXF we find that both the bias in the population parameters and the scatter in the recovered logarithmic values follows the expected trend. The bias increases for younger ages and systematically makes recovered ages older, $M_*/L_r$ larger and metallicities lower than the true values. For reference, at S/N=30, and for the worst case ($t=10^8$yr), the bias is 0.06 dex in $M_*/L_r$, 0.03 dex in both age and [M/H]. There is no significant dependence on either E(B-V) or the shape of the error spectrum. Moreover, the results are consistent for both our 1-SSP and 2-SSP tests. With the STARLIGHT algorithm, we find trends similar to pPXF, when the input E(B-V)<0.2 mag. However, with larger input E(B-V), the biases of the output parameter do not converge to zero even at the highest S/N and are strongly affected by the shape of the error spectra. This effect is particularly dramatic for youngest age, for which all population parameters can be strongly different from the input values, with significantly underestimated dust extinction and [M/H], and larger ages and $M_*/L_r$. Results degrade when moving from our 1-SSP to the 2-SSP tests. The STARLIGHT convergence to the true values can be improved by increasing Markov Chains and annealing loops to the "slow mode". For the same input spectrum, pPXF is about two order of magnitudes faster than STARLIGHT's "default mode" and about three order of magnitude faster than STARLIGHT's "slow mode".
description: Accepted for publication in MNRAS. 17 pages, 17 figures
The Influence of laser relative intensity noise on space-based heterodyne interferometers - from the LISA Pathfinder to the LISA Mission
Creators: name: Wissel, Lennart
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2024
Subjects: subject: Laser interferometry
subject: Laser Relative Intensity Noise
subject: LISA Pathfinder
subject: LISA
subject: Laser interferometrie
subject: Relatives Laser Intensitaetsrauschen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This thesis investigates the influence of laser relative intensity noise on the phase measurement of heterodyne interferometers, with particular focus on the LISA space mission and noise modeling for its precursor, LISA Pathfinder.
Non-linear metric perturbations and production of primordial black holes
Creators: name: Ivanov, P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the simple inflationary model with peculiarity in the form of "plateau" in the inflaton potential. We use the formalism of coarse-grained field to describe the production of metric perturbations $h$ of an arbitrary amplitude and obtain non-Gaussian probability function for such metric perturbations. We associate the spatial regions having large perturbations $h\sim 1$ with the regions going to primordial black holes after inflation. We show that in our model the non-linear effects can lead to overproduction of the primordial black holes.
description: 13 pages, 2 Postscript figures, submitted to Phys. Rev. D
Flat Rotation Curves found in Merging Dusty Starbursts at $z=2.3$ through Tilted-Ring Modeling
Creators: name: Xue, Rui
name: Fu, Hai
name: Isbell, Jacob
name: Ivison, R. J.
name: Cooray, Asantha
name: Oteo, Iván
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The brightest 500$\,μ$m source in the XMM field, HXMM01, is a rare merger of luminous starburst galaxies at $z=2.3$ with a dust-obscured star-formation rate of 2,000$\,M_{\odot}\,{\rm yr}^{-1}$. Here we present high-resolution spectroscopic observations of HXMM01 with the Atacama Large Millimeter/submillimeter Array (ALMA). We detect line emission from ${\rm CO\,{\it J}=7\to6}$, [C I]$\,{{^3P_2}\to{^3P_1}}$, and p-${\rm H_{2}O}\,{2_{11}}\to{2_{02}}$ and continuum emission at $230\,$GHz. At a spatial resolution of 0.2" and a spectral resolution of 40$\,\rm km\,s^{-1}$, the source is resolved into three distinct components, which are spatially and dynamically associated within a projected radius of 20$\,$kpc and a radial velocity range of 2,000$\,\rm km\,s^{-1}$. For two major components, our Bayesian-based tilted-ring modeling of the ALMA spectral cubes shows almost flat rotation curves peaking at $\sim500\,\rm km\,s^{-1}$ at galactocentric distances between 2 and 5$\,$kpc. Each of them has a dynamical mass of $\sim10^{11}\,M_\odot$. The combination of the dynamical masses and the archival ${\rm CO\,{\it J}=1\to0}$ data places strong upper limits on the CO$\to$H$_2$ conversion factor of $α_{\rm CO}\lesssim1.4-2.0\,{M_{\odot}}\,\rm (K\,km\,s^{-1}\,pc^{2})^{-1}$. These limits are significantly below the Galactic inner disk $α_{\rm CO}$ value of $4.3\,{M_{\odot}}\,\rm (K\,km\,s^{-1}\,pc^{2})^{-1}$ but are consistent with those of local starbursts. Therefore, the previously estimated short gas depletion timescale of $\sim200\,$Myr remains unchanged.
description: Accepted for publication in ApJL
Kaon vs. Bottom: Where to look for a general MSSM?
Creators: name: Masiero, A.
name: Vives, O.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze CP violation and Flavor Changing effects in a general Minimal Supersymmetric extension of the Standard Model with arbitrary non-universal soft-breaking terms. We show that, in this conditions, large FCNC effects are naturally expected in the Kaon system, even in the absence of quark-squark flavor misalignment. On the other hand, the B system is only sensitive to new supersymmetric contributions if the non-universality implies, not only different soft term for the three generations but also the presence of a quark-squark misalignment much larger that the corresponding CKM mixing. The only exception to this rule are processes where the chirality changing contributions proportional to tan beta are leading (for instance b -> s gamma).
description: Comment on BaBar-Belle CP asymmetry results, typos corrected and references added. 10 pages, no figures
Shape Synthesis Based on Topology Sensitivity
Creators: name: Capek, Miloslav
name: Jelinek, Lukas
name: Gustafsson, Mats
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A method evaluating the sensitivity of a given parameter to topological changes is proposed within the method of moments paradigm. The basis functions are used as degrees of freedom which, when compared to the classical pixeling technique, provide important advantages, one of them being impedance matrix inversion free evaluation of the sensitivity. The devised procedure utilizes port modes and their superposition which, together with only a single evaluation of all matrix operators, leads to a computationally effective procedure. The proposed method is approximately one hundred times faster than contemporary approaches, which allows the investigation of the sensitivity and the modification of shapes in real-time. The method is compared with known approaches and its validity and effectiveness is verified using a series of examples. The procedure can be implemented in up-to-date EM simulators in a straightforward manner. It is shown that the iterative repetition of the topology sensitivity evaluation can be used for gradient-based topology synthesis. This technique can also be employed as a local step in global optimizers.
description: 13 pages, 16 figures, 2 tables
D0-brane description of the charged black hole
Creators: name: Kato, Yuriko
name: Nojiri, Shin'ichi
name: Sugamoto, Akio
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The charged black hole is considered from the viewpoint of D0-brane in the Matrix theory. It can be obtained from the Kaluza-Klein mechanism by boosting the Schwarzschild black hole in a circle, which is the compactified one dimensional space. Especially, how the extremal limit is realized by the Boltzmann gas of D0-brane, has been shown. In the course of our discussion, the Virial theorem for the statistical average plays an important role.
description: LaTeX file, no figure, 8 pages
A tunable mixed feedback oscillator
Creators: name: Che, Weiming
name: Forni, Fulvio
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: The interplay of positive and negative feedback loops on different time scales appears to be a fundamental mechanisms for robust and tunable oscillations in both biological systems and electro-mechanical systems. We develop a detailed analysis of a basic three dimensional Lure model to show how controlled oscillations arise from the tuning of positive and negative feedback strengths. Our analysis is based on dominance theory and confirms, from a system-theoretic perspective, that the mixed feedback is a fundamental enabler of robust oscillations. Our results are not limited to three dimensional systems and extend to larger systems via passivity theory, and to uncertain systems via small gain arguments.
Situational Awareness and Adversarial Machine Learning -- Robots, Manners, and Stress
Creators: name: Anderson, Ross
name: Shumailov, Ilia
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Both humans and animals infer intent -- a dog knows the difference between a kick and a stumble. Over thousands of generations, we have evolved biological and cultural mechanisms to quickly assess the threat posed by another human or an animal, and animals who interact with humans have similar mechanisms. We also have a keen awareness of whether our environment is friendly or hostile. As robots, and other automata that rely on machine learning, become widespread, they will raise similar but more complex questions of signaling and detecting intent. In recent research, we have been exploring how adversarial samples can be detected more easily than they can be blocked, allowing systems to fall back to more cautious modes of operation. The interaction between machine-learning components and service-denial attacks is a fascinating subject that few have studied so far. In short, while classical system resilience may be seen in terms of layered defence and redundancy, that of machine-learning systems may be much more human. Combining the two intelligently could be a new frontier for research, with a focus on situational awareness. We may see new security protocols, as the communication of intent may become more important than the communication of identity not only for the security and safety of interaction between humans and robots, but also between robots and the wider environment. This gives a new and perhaps more realistic angle on both robot ethics and adversarial machine learning.
$U_L(N)\times U_R(N)$-invariant four-fermion interactions and Nambu-Goldstone mechanism at finite temperature
Creators: name: Zhou, Bang-Rong
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a chiral $U_L(N)\times U_R(N)$ fermion model of NJL-form, we prove that, if all the fermions are assumed to have equal masses and equal chemical potentials, then at the finite temperature $T$ below the symmetry restoration temperature $T_c$, there will be $N^2$ massive scalar composite particles and $N^2$ massless pseudoscalar composite particles (Nambu-Goldstone bosons). This shows that the Goldstone Theorem at finite temperature for spontaneous symmetry breaking $U_L(N)\times U_R(N) \to U_{L+R}(N)$ is consistent with the real-time formalism of thermal field theory in this model.
description: 8 pages, Latex, no figures
MATHICSE Technical Report: A non-intrusive multifidelity method for the reduced order modeling of nonlinear problems
Creators: name: Kast, Mariella
name: Guo, Mengwu
name: Hesthaven, Jan S.
Publisher: name: Écublens, MATHICSE
Year: 2019

description: We propose a non-intrusive reduced basis (RB) method for parametrized nonlinear partial differential equations (PDEs) that leverages models of different accuracy. The method extracts parameter locations from a collection of low-fidelity (LF) snapshots for the efficient creation of a high-fidelity (HF) reduced basis and employs multi-fidelity Gaussian process regression (GPR) to approximate the combination coefficients of the reduced basis. LF data is assimilated either via projection onto an LF basis or via an interpolation approach inspired by bifidelity reconstruction. The correlation between HF and LF data is modeled with hyperparameters whose values are automatically determined in the regression step. The proposed methods not only leverage the assimilated LF data to reduce the cost of the offline phase, but also allow for a fast evaluation during the online stage, independent of the computational cost of neither the low- nor the high-fidelity solution. Numerical studies demonstrate the effectiveness of the proposed approach on manufactured examples and problems in nonlinear structural mechanics. Clear benefits of using lower resolution models rather than reduced physics models are observed in both the basis selection and the regression step. An active learning scheme is used for additional snapshot selection at locations with high error. The speed-up in the online evaluation and the high accuracy of extracted quantities of interest makes the multifidelity RB method a powerful tool for outer-loop applications in engineering, as exemplified in uncertainty quantification.
title: Wie die Plattform-Ökonomie Märkte in Besitz nimmt. Zur Bedeutung der Plattform-Ökonomie für die integrierte ländliche Entwicklung
Creators: name: Luley, Horst
Year: 2024

description: Die Digitalwirtschaft entwickelt sich rasant und agiert weltweit. Sie hat Plattformen hervorge-bracht, die sowohl einen neuen Unternehmens-Typ als auch eine veränderte Form der Marktorganisation darstellen. Dadurch werden sich auch in ländlichen Regionen Deutschlands die Beziehungen zwischen den Wirtschaftssubjekten grundlegend verändern. Es stellt sich die Frage, ob und wie die Voraussetzungen für eine Re-Organisation von Wertschöpfungsketten in Richtung „mehr Regionalität“ und „mehr Nachhaltigkeit“ davon betroffen sind. Nachfolgender Beitrag gibt zunächst einen Überblick über die Formen der Digitalwirtschaft und beschreibt die Geschäftsmodelle von Plattform-Unternehmen. Abschließend werden mögliche Auswirkungen auf eine nachhaltige ländliche Entwicklung in Deutschland anhand von zwei Szenarien abgeschätzt.
description: Diskussionspapier-Reihe Nachhaltigkeitstransformation & Nachhaltigkeitstransfer; 13
Near-infrared luminosity function and colours of dwarf galaxies in the Coma Cluster
Creators: name: Mobasher, Bahram
name: Trentham, Neil
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present K-band observations of the low-luminosity galaxies in the Coma cluster, which are responsible for the steep upturn in the optical luminosity function at M_R ~ -16, discovered recently. The main results of this study are (i) The optical$-$near-infrared colours of these galaxies imply that they are dwarf spheroidals. The median M-K colour for galaxies with -19.3 < M_K < -16.3 is 3.6 mag. (ii) The K-band luminosity function in the Coma cluster at the faint-end is not wee constrained, because of the uncertainties due to the field-to-field variance of the background. However, within the estimate large errors, it is consistent with the R-band luminosity function, shifted by $\sim3$ magnitudes. (iii) Many of the cluster dwarfs lie in a region of the B-K vs. B-R colour-colour diagram where background galaxies are rare Local dwarf spheroidal galaxies lie in this region too. This suggests that a better measurement of the K-band cluster luminosity function can be made if the field-to-field variance of the background can be measured as a function of colour. (iv) If we assume that none of the galaxies in the region of the B-K vs. B-R plane given in (iii) in our cluster fields are background, and that all the cluster galaxies with $15.5 < K < 18.5$ lie in this region of the plane, then we measure alpha = -1.41 +/- 0.35 for -19.3 < M_K < -16.3, where alpha is the logarithmic slope of the luminosity function.
description: 6 pages, 8 figs, 2 tabs, MNRAS in press; email: b.mobasher@ic.ac.uk, trentham@ast.cam.ac.uk
Margaret Mead. Quando l’antropologo è una donna, a cura di Silvia Lelli, Edizioni Clichy La Sorbonne, Paris, 2016
Creators: name: Chiappelli, Tiziana
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2019

description: AAVV
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol 4 No 7 (2019)
Engaging Men and Boys in Violence Prevention di Michael Flood, Palgrave Macmillan, New York, 2018
Creators: name: Di Grigoli, Antonio Raimondo
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2019

description: AAVV
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol 4 No 7 (2019)
Model averaging versus model selection: estimating design floods with uncertain river flow data
Creators: name: Kenechukwu Okoli
name: Breinl, Korbinian
name: Brandimarte, Luigia
name: Botto, Anna
name: Volpi, Elena
name: Baldassarre, Giuliano Di
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology

description: This study compares model averaging and model selection methods to estimate design floods, while accounting for the observation error that is typically associated with annual maximum flow data. Model selection refers to methods where a single distribution function is chosen based on prior knowledge or by means of selection criteria. Model averaging refers to methods where the results of multiple distribution functions are combined. Numerical experiments were carried out by generating synthetic data using the Wakeby distribution function as the parent distribution. For this study, comparisons were made in terms of relative error and root mean square error (RMSE) referring to the 1-in-100 year flood. The experiments show that model averaging and model selection methods lead to similar results, especially when short samples are drawn from a highly asymmetric parent. Also, taking an arithmetic average of all design flood estimates gives estimated variances similar to those obtained with more complex weighted model averaging.
MATHICSE Technical Report: Simulation-Based Anomaly Detection and Damage Localization: an Application to Structural Health Monitoring
Creators: name: Bigoni, Caterina
name: Hesthaven, Jan S.
Publisher: name: Écublens, MATHICSE
Year: 2019

description: We propose a simulation-based decision strategy for the proactive maintenance of complex structures with a particular application to structural health monitoring (SHM). The strategy is based on a data-driven approach which exploits an offine-online decomposition. A synthetic dataset is constructed offine by solving a parametric time-dependent partial differential equation for multiple input parameters, sampled from their probability distributions of natural variation. The collected time-signals, extracted at sensor locations, are used to train classiffiers at such sensor locations, thus constructing multiple databases of healthy configurations. These datasets are then used to train one class Support Vector Machines (OC-SVMs) to detect anomalies. During the online stage, a new measurement, possibly obtained from a damaged configuration, is evaluated using the classiffiers. Information on damage is provided in a hierarchical manner: first, using a binary feedback, the entire structure response is either classifiied as inlier (healthy) or outlier (damaged). Then, for the outliers, we exploit the outputs of multiple classiffiers to retrieve information both on the severity and the spatial location of the damages. Because of the large number of signals needed to construct the datasets offline, a model order reduction strategy is implemented to reduce the computational burden. We apply this strategy to both 2D and 3D problems to mimic the vibrational behavior of complex structures under the effect of an active source and show the effectiveness of the approach for detecting and localizing cracks.
IOT (INTERNET OF THINGS) TEXNOLOGIYALARNING RAQAMLI IQTISODIYOTDAGI O'RNI VA AXAMIYATI
Creators: name: Vasiyeva, Dilfuza
Publisher: name: Zenodo
Year: 2024

description: Bugungi kunda zamonaviy texnologiyalar jamiyatning istiqbolini belgilovchi muhim unsurlardan biriga aylangan va sohaga bo‘lgan talab kun sayin ortib bormoqda. Buning natijasini yon atrofimizdagi innovatsion yechimlar hamda sun’iy intellektlar misolida ko’rishimiz mumkin. Zamonaviy ishlanmalardan biri IoT texnologiyasidir. Har xil qurilmalar turlari Internet orqali turli ilovalar bilan o‘zaro ta’sirlashishadigan har xil tarmoqlar turlarini tashkil qiladi. Bu ilovalar bir necha interfeyslarni tashkil etishi mumkin. Qurilmalar tarmoqlari Internet bilan bog’lanadi, keyin esa tranzit tarmoq orqali ilovalar bilan o’zaro ta’sirlashishadi. Ushbu maqolada eng ommaviy terminlardan biri bo‘lgan - IoT haqida tushuncha va uning zamonaviy texnologik rivojlanishda tutgan o‘rni haqida ma’lumot beriladi.
Chiral Prediction for the $πN$ Scattering Length $a^-$ to Order ${\cal O}(M_π^4)$
Creators: name: Bernard, V.
name: Kaiser, N.
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We evaluate the S-wave pion--nucleon scattering length $a^-$ in the framework of heavy baryon chiral perturbation theory up--to--and--including terms of order $M_π^4$. We show that the order $M_π^4$ piece of the isovector amplitude at threshold, $T^-_{\rm thr}$, vanishes exactly. We predict for the isovector scattering length, $0.088 \, M_{π^+}^{-1} \le a^- \le 0.096 \, M_{π^+}^{-1}$.
description: 5 pp, LaTeX file, 2 figures (appended as separate compressed tar file, amin.uu)
Possible quantum instability of primordial black holes
Creators: name: Elizalde, E.
name: Nojiri, S.
name: Odintsov, S. D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Evidence for the possible existence of a quantum process opposite to the famous Hawking radiation (evaporation) of black holes is presented. This new phenomenon could be very relevant in the case of exotic multiple horizon Nariai black holes and in the context of common grand unified theories. This is clearly manifested in the case of the SO(10) GUT, that is here investigated in detail. The remarkable result is obtained, that anti-evaporation can occur there only in the SUSY version of the theory. It is thus concluded that the existence of primordial black holes in the present Universe might be considered as an evidence for supersymmetry.
description: LaTeX, 7 pages, version to appear in PRD Rapid Communications
Alopecia areata, actualización clínica y terapéutica
Creators: name: Tamayo Mariño, Katiuska
name: Salazar Ramírez, Julio César
name: Ayala Pérez, Pedro Damián
Publisher: name: Zenodo
Year: 2024

description: Introducción: La alopecia areata es una forma típica de pérdida de cabello frecuentemente en parches, aunque puede estar comprometida cualquier región pilosa. Es un trastorno autoinmunitario que afecta a personas con predisposición genética expuestas a algunos desencadenantes ambientales. Objetivo: Compilar información sobre los aspectos más relevantes relacionados con el diagnóstico y terapéutica de la alopecia areata. Método: Se realizó la revisión de la literatura disponible en Scopus, SciElo, Pub Med Central, MedlinePlus, Clinicalkey, LILACS, Orphanet, OMIM, WHO, INFOMED, así como el motor de búsqueda Google Académico. Desarrollo: Partiendo de la historia de la alopecia areata, se procedió a su clasificación, etiología, factores a tener en cuenta para la elección de la terapéutica ideal, pronóstico, particularidades de las terapias que se emplean, pronóstico, educación del paciente y sus familiares. Conclusiones: Conocer una gama amplia de elementos para realizar el diagnóstico de la alopecia areata y opciones para un mejor manejo y en relación con tratamientos disimiles y actualizados, permitirá mejorar la atención de los pacientes afectados.
title: ADCO, Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0124
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0124, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0124, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Saint-Seine
description: Provenance: http://www.wikidata.org/entity/Q2820709
Low-Scale Axion from Large Extra Dimensions
Creators: name: Ma, Ernest
name: Raidal, Martti
name: Sarkar, Utpal
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mass of the axion and its decay rate are known to depend only on the scale of Peccei-Quinn symmetry breaking, which is constrained by astrophysics and cosmology to be between $10^9$ and $10^{12}$ GeV. We propose a new mechanism such that this effective scale is preserved and yet the fundamental breaking scale of $U(1)_{PQ}$ is very small (a kind of inverse seesaw) in the context of large extra dimensions with an anomalous U(1) gauge symmetry in our brane. Unlike any other (invisible) axion model, there are now possible collider signatures in this scenario.
description: 11 pages, no figure
The discovery of very red counterparts to faint X-ray sources
Creators: name: Newsam, A. M.
name: McHardy, I. M.
name: Jones, L. R.
name: Mason, K. O.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present deep K-band imaging at the positions of four very faint X-ray sources found in the UK ROSAT Deep Survey to have no optical counterpart brighter than R~23. Likely identifications are found within the ROSAT error circle in all four fields with R-K colours of between 3.2 +/- 0.4 and 6.4 +/- 0.6. From a consideration of the R-K colours and X-ray to optical luminosity ratios of the candidate identifications, we tentatively classify two of the X-ray sources as very distant (z ~ 1) clusters of galaxies, one as a narrow emission line galaxy and one as an obscured QSO.
description: 7 pages, LaTeX, 7 figures (1 postscript file each). Uses mn.sty and epsf.sty. Accepted by MNRAS. For more information see http://www.astro.soton.ac.uk/~amn/UKdeep
Generalisations of the Coleman-Thun mechanism and boundary reflection factors
Creators: name: Dorey, Patrick
name: Tateo, Roberto
name: Watts, Gerard
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We make a complete pole analysis of the reflection factors of the boundary scaling Lee-Yang model. In the process we uncover a number of previously unremarked mechanisms for the generation of simple poles in boundary reflection factors, which have implications for attempts to close the boundary bootstrap in more general models. We also explain how different boundary conditions can sometimes share the same fundamental reflection factor, by relating the phenomenon to potential ambiguities in the interpretation of certain poles. In the case discussed, this ambiguity can be lifted by specifying the sign of a bulk-boundary coupling. While the recipe we employ for the association of poles with general on-shell diagrams is empirically correct, we stress that a justification on the basis of more fundamental principles remains a challenge for future work.
description: 12 pages, Latex 2e, 10 figures, uses epsf, amssymb, cite
Super Eightbrane in Superspace
Creators: name: Nishino, Hitoshi
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a superspace formulation for super eightbrane theory based on massive type IIA supergravity in ten-dimensions. Remarkably, in addition to the 10-form superfield strength originally needed for super eightbrane, we also need an `over-ranked' 11-form superfield strength $H_{A_1... A_{11}}$ with identically vanishing purely bosonic component, in order to satisfy all the Bianchi identities. As a natural super p-brane formulation for the 11-form superfield strength, we present a super ninebrane action on 10-dimensional super-worldvolume invariant under a local fermionic $\k$-symmetry. We also show that we can formulate such a superspace with an `over-ranked' superfield strength also in eleven-dimensions, and possibly in other lower dimensions as well.
description: 14 pages, latex, minor corrections for expressions, typos, updated references, etc
Selection rules in three-body B decay from factorization
Creators: name: Suzuki, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Extending the dynamics underlying the factorization calculation of two-body decays, we propose simple selection rules for nonresonant three-body B decays. We predict, for instance, that in the Dalitz plot of B^0-->D^0-barπ^+π^-, practically no events should be found in the corner of E(π^+) < Λ_{QCD} as compared with the corner of E(π^-) < Λ_{QCD}. We also predict that there should be very few three-body decay events with a soft meson resonance and two energetic mesons or meson resonances. The selection rules are quite different from the soft pion theorem, since they apply to different kinematical regions. For B^0 -->D^0-barπ^+π^-, the latter predicts that the decay matrix element vanishes in the zero-four-momentum limit of π^+ instead of π^-. Since this marked difference from the soft pion theorem is directly related to the issue of short-distance QCD dominance in the FSI of two-body B decays, experimental test of the selection rules will shed light on strong interaction dynamics of B decay.
description: 12 pages in REVTEX including 3 eps figures