cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Russian Twitter Election Interference 2015-2018
Creators: name: Borycz, Joshua
Publisher: name: figshare
Year: 2019
Subjects: subject: Anthropology
subject: FOS: Sociology

description: The data in this assignment is a collection of tweets that were determined to come from the Internet Research Agency, which is a Russian troll farm that sought to interfere in the United States presidential election in 2016. The dataset contains the tweets of approximately 2,848 twitter accounts that were gathered by researchers at Clemson University and a total of 2,973,371 tweets. The subset of the data that I focused on in this work are the tweets from those twitter accounts that are related through Granger causality throughout 2016. The accounts were selected by performing Granger analyses on all pairs of twitter accounts based on tweets from 2016 and extracting those accounts that had p-values of less than 0.05. The final data set contained 253,509 tweets from 10 twitter accounts.
Path integral action of a particle with the generalized uncertainty principle and correspondence with noncommutativity
Creators: name: Gangopadhyay, Sunandan
name: Bhattacharyya, Sukanta
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The existence of an observer independent minimum length scale can lead to the modification of the Heisenberg uncertainty principle to the generalized uncertainty principle. This in turn would be responsible for the modification of the Hamiltonian describing a non-relativistic particle moving in the presence of an arbitrary potential. In this work we carry out a path integral formulation to compute the transition amplitude for this particle. The formalism yields the action of such a particle in an arbitrary potential. Interestingly, the action indicates that there is an upper bound to the velocity that a particle can have which depends on the generalized uncertainty principle parameter. We then compute explicitly the propagator of a free particle and particle moving in a harmonic oscilltor potential using the path integral representation of the transition amplitude. We observe that there exists a curious connection between the transition amplitude of the free particle in the generalized uncertainty priciple framework with the corresponding result in noncommutative space found from the path integral formulation in \cite{sgprl}. From the harmonic oscillator result for the transition amplitude, we calculate the ground state energy of the harmonic oscillator. The result shows that the ground state energy of the harmonic oscillator in the framework of the Heisenberg uncertainty principle gets augmented by the presence of the generalized uncertainty principle and also depends on the mass of the particle. We also demonstrate that the result agrees with that obatined using the operatorial approach.
description: 7 pages Latex, comments are welcome
Polaron picture of the two-photon quantum Rabi model
Creators: name: Cong, Lei
name: Sun, Xi-Mei
name: Liu, Maoxin
name: Ying, Zu-Jian
name: Luo, Hong-Gang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We employ a polaron picture to investigate the properties of the two-photon quantum Rabi model (QRM), which describes a two-level or spin-half system coupled with a single bosonic mode by a two-photon process. In the polaron picture, the coupling in the two-photon process leads to spin-related asymmetry so that the original single bosonic mode splits into two separated frequency modes for the opposite spins, which correspond to two \textit{bare} polarons. Furthermore, the tunneling causes these two bare polarons to exchange their components with each other, thus leading to additional \textit{induced} polarons. According to this picture, the variational ground-state wave function of the two-photon QRM can be correctly constructed, with the ground-state energy and other physical observables in good agreement with the exact numerics in all the coupling regimes. Furthermore, generalization to multiple induced polarons involving higher orders in the tunneling effect provides a systematic way to yield a rapid convergence in accuracy even around the difficult spectral collapse point. In addition, the polaron picture provides a distinctive understanding of the spectral collapse behavior, that is about the existence of discrete energy levels apart from the collapsed spectrum at the spectral collapse point. This work illustrates that the polaron picture is helpful to capture the key physics in this nonlinear light-matter interaction model and indicates that this method can be applicable to more complicated QRM-related models.
Tunneling in $Λ$ Decaying Cosmologies and the Cosmological Constant Problem
Creators: name: Jafarizadeh, M. A.
name: Darabi, F.
name: Rezaei-Aghdam, A.
name: Rastegar, A. R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The tunneling rate, with exact prefactor, is calculated to first order in $\hbar$ for an empty closed Friedmann-Robertson-Walker (FRW) universe with decaying cosmological term $Λ\sim R^{-m}$ ($R$ is the scale factor and $m$ is a parameter $0\leq m \leq 2$). This model is equivalent to a cosmology with the equation of state $p_χ=(m/3 -1)ρ_χ$. The calculations are performed by applying the dilute-instanton approximation on the corresponding Duru-Kleinert path integral. It is shown that the highest tunneling rate occurs for $m=2$ corresponding to the cosmic string matter universe. The obtained most probable cosmological term, like one obtained by Strominger, accounts for a possible solution to the cosmological constant problem.
description: 21 pages, REVTEX, The section 3 is considerably completed including some physical mechanisms supporting the time variation of the cosmological constant, added references for the section 3. Accepted to be published in Phys. Rev. D
Characterization of arbitrary-order correlations in quantum baths by weak measurement
Creators: name: Wang, Ping
name: Chen, Chong
name: Peng, Xinhua
name: Wrachtrup, Jorg
name: Liu, Ren-Bao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81-XX

description: Correlations of fluctuations are the driving forces behind the dynamics and thermodynamics in quantum many-body systems. For qubits embedded in a quantum bath, the correlations in the bath are the key to understanding and combating decoherence -a critical issue in quantum information technology. However, there is no systematic method for characterizing the many-body correlations in quantum baths beyond the second order or the Gaussian approximation. Here we present a scheme to characterize the correlations in a quantum bath to arbitrary order. The scheme employs weak measurement of the bath via projective measurement of a central system. The bath correlations, including both the "classical" and the "quantum" parts, can be reconstructed from the correlations of the measurement outputs. The possibility of full characterization of many-body correlations in a quantum bath forms the basis for optimizing quantum control against decoherence in realistic environments, for studying the quantum characteristics of baths, and for quantum sensing of correlated clusters in quantum baths.
Ultrametric Matrices and Representation Theory
Creators: name: Bantay, P.
name: Zala, G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The consequences of replica-symmetry breaking on the structure of ultrametric matrices appearing in the theory of disordered systems is investigated with the help of representation theory, and the results are compared with those obtained by Temesvari, De Dominicis and Kondor.
description: 13 pages, 1 figure (in LaTeX), submitted to J. Phys. A.: Math. Gen
Secure Digital Signal Transmission by Multistep Parameter Modulation and Alternative Driving of Transmitter Variables
Creators: name: Palaniyandi, P.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The idea of secure communication of digital signals via chaos synchronization has been plagued by the possibility of attractor reconstruction by eavesdroppers as pointed out by Perez and Cerdeira. In this Letter, we wish to present a very simple mechanism by which this problem can be overcome, wherein the signal is transmitted via a multistep parameter modulation combined with alternative driving of different transmitter variables, which makes the attractor reconstruction impossible. The method is illustrated by means of the Lorenz system and Chua's circuit as examples.
description: 15 pages, RevTeX, 6 eps figures, To appear in Int. J. Bifurcation and Chaos (July 2001)
Structure of wavefunctions in (1+2)-body random matrix ensembles
Creators: name: Kota, V. K. B.
name: Sahu, R.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Abstrtact: Random matrix ensembles defined by a mean-field one-body plus a chaos generating random two-body interaction (called embedded ensembles of (1+2)-body interactions) predict for wavefunctions, in the chaotic domain, an essentially one parameter Gaussian forms for the energy dependence of the number of principal components NPC and the localization length ${\boldmath $l$}_H$ (defined by information entropy), which are two important measures of chaos in finite interacting many particle systems. Numerical embedded ensemble calculations and nuclear shell model results, for NPC and ${\boldmath $l$}_H$, are compared with the theory. These analysis clearly point out that for realistic finite interacting many particle systems, in the chaotic domain, wavefunction structure is given by (1+2)-body embedded random matrix ensembles.
description: 20 pages, 3 figures (1a-c, 2a-b, 3a-c), prepared for the invited talk given in the international conference on `Perspectives in Theoretical Physics', held at Physical Research Laboratory, Ahmedabad during January 8-12, 2001
title: Innovative Ansätze zur Abfederung des Fachkräftemangels für KMU in Österreich
Creators: name: Weingraber, Wolfgang
Publisher: name: FH CAMPUS 02 (CAMPUS 02 Fachhochschule der Wirtschaft)
Year: 2024
Subjects: subject: 658 Allgemeines Management

description: Das Thema des Fachkräftemangels ist omnipräsent und wird in den nächsten Jahren immer stärkere Auswirkungen auf die österreichische respektive europäische Gesellschaft haben. Die Ursachen dieses Problems sind vielfältig und basieren auf diversen Entwicklungen der vergangenen Jahrzehnte. Gerade kleine Unternehmen und Start-Ups sind davon betroffen, da für das geplante Wachstum dieser Unternehmen oftmals eine Vielzahl an Mitarbeiterinnen und Mitarbeitern in relativ kurzer Zeit benötigt wird, jedoch verhältnismäßig wenig Mittel zur Erwerbung zur Verfügung stehen. Zumeist werden Lösungsansätze gegen den Fachkräftemangel aus Sicht der Personalabteilung oder Geschäftsführung betrachtet. Um entsprechende Methoden zur Abfederung des Problems zu entwickeln, ist es von großer Bedeutung, dass diese Thematik zusätzlich aus anderen Blickwinkeln betrachtet wird. Im Zuge dieser Arbeit werden durch den Einsatz von Innovationsmethoden und Kreativtechniken entsprechende Lösungen entwickelt. Zudem wird anhand einer quantitativen Befragung überprüft, ob die theoretisch aufgestellten Ansätze in der Praxis entsprechenden Zuspruch finden. Als Zielgruppe der Erhebung wird die nächste Generation des Arbeitsmarktes, die Generation Z mit Personen im Alter zwischen 15 und 27 Jahren, gewählt.
description: The issue of a shortage of skilled workers is ubiquitous and will have an increasingly strong impact on the Austrian and European society in the coming years. The causes of this problem are diverse and based on various developments over the past decades. Small companies and start-ups are particularly affected, as the planned growth of these companies often requires a large number of employees in a relatively short period of time. In addition to that, these companies have comparatively fewer resources for the acquisition of skilled workers. In most cases, solutions to the skilled worker shortage are considered from the perspective of the HR department or management. In order to develop appropriate methods to mitigate the problem, it is very important that this issue is also considered from other perspectives. In the course of this work, appropriate solutions are developed through the use of innovation methods and creative techniques. In addition, a quantitative survey is used to check whether the theoretically established approaches are correspondingly popular in practice. The target group of the survey is the next generation of the labor market, the Generation Z considering people aged between 15 and 27.
Stochastic approach to inflation II: classicality, coarse-graining and noises
Creators: name: Casini, H.
name: Montemayor, R.
name: Sisterna, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we generalize a previously developed semiclassical approach to inflation, devoted to the analysis of the effective dynamics of coarse-grained fields, which are essential to the stochastic approach to inflation. We consider general non-trivial momentum distributions when defining these fields. The use of smooth cutoffs in momentum space avoids highly singular quantum noise correlations and allows us to consider the whole quantum noise sector when analyzing the conditions for the validity of an effective classical dynamical description of the coarse-grained field. We show that the weighting of modes has physical consequences, and thus cannot be considered as a mere mathematical artifact. In particular we discuss the exponential inflationary scenario and show that colored noises appear with cutoff dependent amplitudes.
description: 18 pages, revtex, no figures
Preheating with non-minimally coupled scalar fields in higher-curvature inflation models
Creators: name: Tsujikawa, S.
name: Maeda, K.
name: Torii, T.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In higher-curvature inflation models ($R+α_n R^n$), we study a parametric preheating of a scalar field $χ$ coupled non-minimally to a spacetime curvature $R$ ($ξR χ^2$). In the case of $R^2$-inflation model, efficient preheating becomes possible for rather small values of $ξ$, i.e. $|ξ|< several. Although the maximal fluctuation $\sqrt{< χ^2 >}_{max} \approx 2 \times10^{17}$ GeV for $ξ\approx -4$ is almost the same as the chaotic inflation model with a non-minimally coupled $χ$ field, the growth rate of the fluctuation becomes much larger and efficient preheating is realized. We also investigate preheating for $R^4$ model and find that the maximal fluctuation is $\sqrt{< χ^2 >}_{max} \approx 8 \times 10^{16}$ GeV for $ξ\approx -35$.
description: 31pages, 12figures
Additional file 1 of Reversal of endocrine resistance in breast cancer: interrelationships among 14-3-3ζ, FOXM1, and a gene signature associated with mitosis
Creators: name: Bergamaschi, Anna
name: Christensen, Barbara L
name: Katzenellenbogen, Benita S
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 1
Exact Solution of Two-Species Ballistic Annihilation with General Pair-Reaction Probability
Creators: name: Richardson, M. J. E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The reaction process $A+B->C$ is modelled for ballistic reactants on an infinite line with particle velocities $v_A=c$ and $v_B=-c$ and initially segregated conditions, i.e. all A particles to the left and all B particles to the right of the origin. Previous, models of ballistic annihilation have particles that always react on contact, i.e. pair-reaction probability $p=1$. The evolution of such systems are wholly determined by the initial distribution of particles and therefore do not have a stochastic dynamics. However, in this paper the generalisation is made to $p<1$, allowing particles to pass through each other without necessarily reacting. In this way, the A and B particle domains overlap to form a fluctuating, finite-sized reaction zone where the product C is created. Fluctuations are also included in the currents of A and B particles entering the overlap region, thereby inducing a stochastic motion of the reaction zone as a whole. These two types of fluctuations, in the reactions and particle currents, are characterised by the `intrinsic reaction rate', seen in a single system, and the `extrinsic reaction rate', seen in an average over many systems. The intrinsic and extrinsic behaviours are examined and compared to the case of isotropically diffusing reactants.
description: 22 pages, 2 figures, typos corrected
Additional file 1 of Male prisoners’ experiences of taking part in research about suicide and violence: a mixed methods study
Creators: name: Hemming, Laura
name: Pratt, Daniel
name: Haddock, Gillian
name: Bhatti, Peer
name: Shaw, Jennifer
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 1. Visual Analogue Scale of mood.
Measures of gravitational entropy I. Self-similar spacetimes
Creators: name: Pelavas, Nicos
name: Lake, Kayll
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the possibility that the gravitational contribution to the entropy of a system can be identified with some measure of the Weyl curvature. In this paper we consider homothetically self-similar spacetimes. These are believed to play an important role in describing the asymptotic properties of more general models. By exploiting their symmetry properties we are able to impose significant restrictions on measures of the Weyl curvature which could reflect the gravitational entropy of a system. In particular, we are able to show, by way of a more general relation, that the most widely used "dimensionless" scalar is \textit{not} a candidate for this measure along homothetic trajectories.
description: revtex, minor clarifications, to appear in Physical Review D
Tunnelling with Bianchi IX Instantons
Creators: name: Saffin, P. M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the context of finding the initial conditions of the universe we consider gravitational instantons falling into the Bianchi IX classification. That is, a Euclidean four-manifold with a metric that satisfies Einstein's equations with an induced metric on S^3 submanifolds that is homogeneous but anisotropic. As well as finding regular solutions to the field equations with a tunnelling scalar field, we also look at the case of singular instantons with a view to applying the results to generic potentials. The study is in agreement with the prejudice that instantons with higher symmetry have a lower Euclidean action, even when we consider the singular class of solutions. It is also found that the Euclidean action can diverge for simple potentials, showing that the Hawking Turok instanton had finite action owing to its symmetry.
description: latex, 5 pages, 5 figures. Replacing with the version accepted for Phys. Lett. B, following minor additions
On the derivation of the t-J model: electron spectrum and exchange interactions in narrow energy bands
Creators: name: Irkhin, V. Yu.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A derivation of the t-J model of a highly-correlated solid is given starting from the general many-electron Hamiltonian with account of the non-orthogonality of atomic wave functions. Asymmetry of the Hubbard subbands (i.e. of ``electron'' and ``hole''cases) for a nearly half-filled bare band is demonstrated. The non-orthogonality corrections are shown to lead to occurrence of indirect antiferromagnetic exchange interaction even in the limit of the infinite on-site Coulomb repulsion. Consequences of this treatment for the magnetism formation in narrow energy bands are discussed. Peculiarities of the case of ``frustrated'' lattices, which contain triangles of nearest neighbors, are considered.
description: 4 pages, RevTeX
Additional file 2 of Male prisoners’ experiences of taking part in research about suicide and violence: a mixed methods study
Creators: name: Hemming, Laura
name: Pratt, Daniel
name: Haddock, Gillian
name: Bhatti, Peer
name: Shaw, Jennifer
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 2. List of suggested words.
The Marolf-Ori singularity inside fast spinning black holes
Creators: name: Burko, Lior M.
name: Khanna, Gaurav
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The effective shock wave singularity at the outgoing leg of the inner horizon of a linearly perturbed fast spinning black hole is studied numerically for either scalar field, or vacuum, gravitational perturbations. We demonstrate the occurrence of the Marolf-Ori singularity, including changes of order unity in the scalar field $ϕ$ for the scalar field model, and in the Weyl scalars $ψ_0$ and $ψ_4$ (rescaled appropriately by the horizon function $Δ$) and the Kretschmann curvature scalar $K$ for the vacuum, gravitational perturbations model for both null and timelike geodesic observers. We quantify the shock sharpening effect and show that in all cases its rate agrees with expectations.
Primordial Magnetic Fields via Spontaneous Breaking of Lorentz Invariance
Creators: name: Bertolami, O.
name: Mota, D. F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Spontaneous breaking of Lorentz invariance compatible with observational limits may realistically take place in the context of string theories, possibly endowing the photon with a mass. In this process the conformal symmetry of the electromagnetic action is broken allowing for the possibility of generating large scale ($\sim Mpc$) magnetic fields within inflationary scenarios. We show that for reheating temperatures safe from the point of view of the gravitino and moduli problem, $T_{RH} \laq 10^{9} GeV$ for $m_{3/2} \approx 1 TeV$, the strength of the generated seed fields is, in our mechanism, consistent with amplification by the galactic dynamo processes and can be even as large as to explain the observed galactic magnetic fields through the collapse of protogalactic clouds.
description: Final version to appear in Physics Letters B
A Phase Space Approach to Gravitational Enropy
Creators: name: Rothman, Tony
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the definition S = ln Omega as a candidate "gravitational entropy" function. We calculate its behavior for gravitationl and density perturbations in closed, open and flat cosmologies and find that in all cases it increases monotonically. Using the formalism to calculate the gravitational entropy produced during inflation gives the canonical answer. We compare the behavior of S with the behavior of the square of the Weyl tensor. Applying the formalism to black holes has proven more problematical.
description: Talk delivered at South African Relativistic Cosmology Symposium, Feb 1999. Some new results over Rothman and Anninos 97. To appear in GRG, 17 pages
Additional file 3 of Male prisoners’ experiences of taking part in research about suicide and violence: a mixed methods study
Creators: name: Hemming, Laura
name: Pratt, Daniel
name: Haddock, Gillian
name: Bhatti, Peer
name: Shaw, Jennifer
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 3. GRIPP2-SF.
Baryon fields with $U_{L}(3)\times U_{R}(3)$ chiral symmetry V: Pion-Nucleon and Kaon-Nucleon $Σ$ Terms
Creators: name: Dmitrasinovic, V.
name: Chen, Hua-Xing
name: Hosaka, Atsushi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have previously calculated the pion-nucleon $Σ_{πN}$ term in the chiral mixing approach with $u,d$ flavors only, and found the lower bound $Σ_{πN} \geq \left(1 + \frac{16}{3} \sin^2 θ\right){3 \over 2} \left(m_{u}^{0} + m_{d}^{0}\right)$. The mixing angle $θ$ can be calculated as $\sin^2θ= \frac{3}{8}\left(g_A^{(0)} + g_A^{(3)}\right)$. With presently accepted values of current quark masses, this leads to $Σ_{πN} \geq 58.0 \pm 4.5 \begin{array}{l} +11.4 \\ -6.5 \end{array}$ MeV, which is in agreement with the values extracted from experiments, and substantially higher than most previous two-flavour calculations. The causes of this enhancement are: 1) the large, ($\frac{16}{3}\simeq 5.3$), purely $SU_L(2) \times SU_R(2)$ algebraic factor, 2) the admixture of the $[(\mathbf{1},\mathbf{\frac12})\oplus (\mathbf{\frac12},\mathbf{1})]$ chiral multiplet component in the nucleon, whose presence has been known for some time, but that had not been properly taken into account, yet. We have now extended these calculations of $Σ_{πN}$ to three light flavours, i.e., to $SU_L(3) \times SU_R(3)$ multiplet mixing. Phenomenology of chiral $SU_L(3) \times SU_R(3)$ multiplet mixing demands the presence of three chiral $SU_L(3) \times SU_R(3)$ multiplets in order to successfully reproduce the baryons' flavor-octet and flavor-singlet axial currents, as well as the baryon anomalous magnetic moments. The physical significance of these results lies in the fact that they show no need for $q^4 {\bar q}$ components, and in particular, no need for an $s \bar s$ component in the nucleon, in order to explain the large "observed" $Σ_{πN}$ value. We also predict the experimentally unknown kaon-nucleon sigma term $Σ_{K N}$.
description: 28 pages, 4 tables, published in PRC
Software Development Effort Estimation Using Regression Fuzzy Models
Creators: name: Nassif, Ali Bou
name: Azzeh, Mohammad
name: Idri, Ali
name: Abran, Alain
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Software effort estimation plays a critical role in project management. Erroneous results may lead to overestimating or underestimating effort, which can have catastrophic consequences on project resources. Machine-learning techniques are increasingly popular in the field. Fuzzy logic models, in particular, are widely used to deal with imprecise and inaccurate data. The main goal of this research was to design and compare three different fuzzy logic models for predicting software estimation effort: Mamdani, Sugeno with constant output and Sugeno with linear output. To assist in the design of the fuzzy logic models, we conducted regression analysis, an approach we call regression fuzzy logic. State-of-the-art and unbiased performance evaluation criteria such as standardized accuracy, effect size and mean balanced relative error were used to evaluate the models, as well as statistical tests. Models were trained and tested using industrial projects from the International Software Benchmarking Standards Group (ISBSG) dataset. Results showed that data heteroscedasticity affected model performance. Fuzzy logic models were found to be very sensitive to outliers. We concluded that when regression analysis was used to design the model, the Sugeno fuzzy inference system with linear output outperformed the other models.
description: This paper has been accepted in January 2019 in Computational Intelligence and Neuroscience Journal (In Press)
Bunaeopsis annabellae Lemaire & Rougeot 1975
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Saturniidae
Bunaeopsis
Bunaeopsis annabellae

description: Bunaeopsis annabellae Lemaire & Rougeot, 1975
COMMON NAME(S): Saturniid.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Angola, Namibia, Zambia.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: De Prins & De Prins 2022; Saturniidae of the World 2019.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 148, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
Additional file 2 of Reversal of endocrine resistance in breast cancer: interrelationships among 14-3-3ζ, FOXM1, and a gene signature associated with mitosis
Creators: name: Bergamaschi, Anna
name: Christensen, Barbara L
name: Katzenellenbogen, Benita S
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 2
title: Ästhetische Mammaaugmentation und Lebensqualität
Creators: name: Sarantopoulos, Evangelos
name: Runnebaum, Ingo
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Der Begriff „Lebensqualität“ hat in den letzten Jahren immer mehr an Bedeutung gewonnen. Aufgrund der kontinuierlich steigenden Anzahl von ästhetischen Mammaaugmentationen ist es erforderlich die Lebensqualität nach solchen Operationen zu evaluieren. Methoden:[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
KNOWLEDGE AND PRACTICE OF POST STROKE REHABILITION, STRESS AND BURDEN AMONG CARE GIVERS OF STROKE PATIENTS
Creators: name: Sridevi B
name: Vignesh V
name: Kavitha M
name: Deepika D
Publisher: name: Zenodo
Year: 2024
Subjects: Caregiver, Knowledge, Patient, Practice, Rehabilitation, Post Stoke.

description: Abstract

Background: Stroke is a critical healthcare issue because it is one of the top causes of mortality, disability, and dependence on daily living activities globally. The recovery of stroke patients is greatly aided by home care. Relatives and carers from the patient's family can be crucial in the patient's care. Nevertheless, they lack knowledge and experience regarding how to continue providing the patient with proper care at home after discharge. According to this viewpoint, the researcher believes that teaching others about stroke and the care of stroke patients at home may be very beneficial for both patients and their careers. Materials and Methods: The quantitative approach, descriptive correlational research design was conducted in the patient admitted in Saveetha Medical College and Hospital A total of 60 study participants were recruited by using convenience sampling technique, based on the inclusion criteria, the demographic and clinical data was collected by using a self-structured questionnaire, Psychological distress scale and Zarit scale (caregiver burden scale) was estimated during care taking. Results: The outcome results identified that 31 (51.7%) had inadequate, 26 (43.3%) had moderate adequate and 3 (5%) had adequate the level knowledge and practice of post stroke rehabilitation among care givers. The living condition of care giver and relationship with patient had shown statistically significant association with level of knowledge and practice on post stroke rehabilitation among care givers of patient with stroke p=0. 049. Karl Pearson’s Correlation value of r = 0.913 between stress and burden shows a positive correlation which was found to be statistically significant at p<0.001 level. Conclusion: This study demonstrates and concluded that there is strong relationship between level of knowledge and practice on post stroke rehabilitation, stress, and burden among care givers of patient with stroke. This clearly infers that when stress among caregivers of stroke patients increases then ultimately the burden among caregivers of stroke patients increases.
title: Current Trends in Breast-Reduction – an International Analysis
Creators: name: Broer, Niclas
name: Prantl, Lukas
name: Ninkovic, Milomir
name: Richter, Dirk
name: Ehrl, Denis
name: Rohrich, Rod
name: Heidekrüger, Paul
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Breast reductions and mastopexies continue to rank among the most frequently performed plastic surgical procedures worldwide. However, there exists consensus on several aspects of the procedure, but a plethora of controversies remains. Aim of this study was to compare the most relevant[for full text, please go to the a.m. URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
title: Ist die kombinierte Aspirationslipektomie und subkutane Mastektomie die beste Therapie bei Gynäkomastie?
Creators: name: Allan, Allan A.
name: Berendes, Sebastian
name: Richter, Dirk F.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Wie bei der weiblichen Brust stehen im Falle der Gynäkomastie dem Plastischen Chirurgen mehrere Behandlungsmöglichkeiten zur Auswahl. Je nach Ausprägung des Befunds sowie Wunsch des Patienten, variiert die Therapie von einer einfachen Liposuktion in einem ambulanten Umfeld[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
title: Einfluss verschiedener OP-Techniken auf den Mamillen-Areola-Komplex bei der Therapie der Gynäkomastie
Creators: name: Pfeiler, Peter Paul
name: Luketina, Rosalia
name: Mett, Tobias
name: Könneker, Sören
name: Vogt, Peter
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Bei der Gynäkomastie zeigt sich oftmals ein vergrößerter Mamillen-Areolen-Komplex (MAK). Patienten beklagen neben dem vermehrten Brustdrüsengewebe und Brustvolumen den vergrößerten Mamillen-Areolen-Komplex als äußerlich störend und unästhetisch.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
title: Lipödem: Eine unterdiagnostizierte Krankheit
Creators: name: Stylianaki, Aikaterini
name: Gousopoulos , Epameinondas
name: Felmerer, Gunther
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Das Lipödem ist eine chronische und progrediente Krankheit unbekannter Ätiologie, welche fast ausschließlich Frauen betrifft. Es ist durch die symmetrische subkutane Ablagerung von Fettgewebe in den unteren und oberen Extremitäten gekennzeichnet. Das Lipödem ist [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Universality of correlation functions of hermitian random matrices in an external field
Creators: name: Zinn-Justin, P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The behavior of correlation functions is studied in a class of matrix models characterized by a measure $\exp(-S)$ containing a potential term and an external source term: $S=N\tr(V(M)-MA)$. In the large $N$ limit, the short-distance behavior is found to be identical to the one obtained in previously studied matrix models, thus extending the universality of the level-spacing distribution. The calculation of correlation functions involves (finite $N$) determinant formulae, reducing the problem to the large $N$ asymptotic analysis of a single kernel $K$. This is performed by an appropriate matrix integral formulation of $K$. Multi-matrix generalizations of these results are discussed.
description: 29 pages, TeX
Nonclassical symmetries as special solutions of heir-equations
Creators: name: Nucci, M. C.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In (Nucci M.C. 1994, Physica D 78 p.124), we have found that iterations of the nonclassical symmetries method give rise to new nonlinear equations, which inherit the Lie point symmetry algebra of the given equation. In the present paper, we show that special solutions of the right-order heir-equation correspond to classical and nonclassical symmetries of the original equations. An infinite number of nonlinear equations which possess nonclassical symmetries are derived.
Physical parameters of RR Lyrae stars in NGC 6171
Creators: name: Deras, D.
name: Ferro, A. Arellano
name: Muneer, S.
name: Giridhar, Sunetra
name: Michel, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of VI CCD time-series photometry of the globular cluster NGC 6171. The main goal is to determine individual physical parameters for single-mode RR Lyrae stars present in the field of view of our images, by means of light curve Fourier decomposition and well-established calibrations and zero-points. This leads to the estimation of the mean values of the metallicity and distance for the parental cluster. From the RRab stars we find [Fe/H]ZW = -1.33 +- 0.12 and a distance d = 5.3 +- 0.3 kpc and from the RRc stars we find [Fe/H]ZW = -1.02 +- 0.19 and a distance d = 5.3 +- 0.2 kpc. Independent methods, such as the P-L relations for RRab and SX Phe stars enable the estimation of a weighted average distance to the cluster of 5.4 +- 0.1 kpc. We confirm the amplitude modulations of the Blazhko type of five RRab and the non-membership of V21 to the cluster. The colour-magnitude diagram is consistent with an age of 11 Gyrs. The distribution of RRab and RRc stars seems well segregated around the first overtone red edge of the instability strip. This positions NGC 6171 among OoI type clusters where the pulsating modes are neatly separated in the HB. We report two new irregular variables of the Lb type.
description: 13 pages, 8 figures, accepted on October 4, 2018
Causal Set Dynamics: A Toy Model
Creators: name: Criscuolo, A.
name: Waelbroeck, H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a quantum measure on the power set of non-cyclic oriented graphs of N points, drawing inspiration from 1-dimensional directed percolation. Quantum interference patterns lead to properties which do not appear to have any analogue in classical percolation. Most notably, instead of the single phase transition of classical percolation, the quantum model displays two distinct crossover points. Between these two points, spacetime questions such as "does the network percolate" have no definite or probabilistic answer.
description: 28 pages incl. 5 figures
Population diversity and epidemiology of Bremia lactucae the cause of lettuce downy mildew
Creators: name: Farmer, Alicia Ann
Publisher: name: The University of St Andrews
Year: 2024
Subjects: Bremia lactucae
Lettuce downy mildew
SSR
Epidemiology
Diagnostics
Plant pathology

description: Bremia lactucae is an obligate biotroph that causes Lettuce Downy Mildew (LDM), a foliar disease of lettuce which negatively affects crop value though reduced yield and quality. Emergence of new strains of B. lactucae that can overcome host resistance or result in reduced sensitivity to fungicide active ingredients is a consistent risk to LDM management and crop production. From the 254 UK samples of B. lactucae collected and genotyped successfully using ten SSR loci, 135 multilocus genotypes were identified. Evidence was found of widespread incidence of heterokaryosis and overwintering clonal lineages. At least one UK isolate was able to overcome each differential line in IBEB differential set-C, of which cv Dandie containing Dm3 was least overcome by isolates tested. Of 15 B. lactucae samples tested with the fungicide active ingredients axoystrobin, mandipropamid and dimethomorph, no fungicide insensitivity was observed. No conclusive evidence of association between genotype to fungicide insensitivity nor virulence was obtained. When trials were inoculated with isolates of various pathogen genotypes, cultivar choice was found to greatly influence the population diversity of B. lactucae, with specific MLLs associated with some of the trial cultivars. The study of aerial dispersal of sporangia using the LAMP assay and aerial samplers found it was predominantly local to infected plants (<5m). DNA of B. lactucae was detected up to 100m from an inoculum source. In commercial environments detection using the LAMP assay was as early as two days before LDM was reported in field, with symptomatic plants observed ~50-80m away from samplers. The UK population of B. lactucae, based on samples collected, is diverse in genotype and phenotype. LDM management should account for the genetic flexibility of B. lactucae heterokaryons, which may contribute to overwintering soil-borne inoculum, and aerial dispersion of sporangia, which transmits the pathogen and can contribute to gene flow.
Dynamical quantum phase transitions in Weyl semimetals
Creators: name: Lahiri, Aritra
name: Bera, Soumya
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The quench dynamics in type-I inversion symmetric Weyl semimetals (WSM) are explored in this work which, due to the form of the Hamiltonian, may be readily extended to two-dimensional Chern insulators. We analyze the role of equilibrium topological properties characterized by the Chern number of the pre-quench ground state in dictating the non-equilibrium dynamics of the system, specifically, the emergence of dynamical quantum phase transitions (DQPT). By investigating the ground state fidelity, it is found that a change in the signed Chern number constitutes a sufficient but not necessary condition for the occurrence of DQPTs. Depending on the ratio of the transverse and longitudinal hopping parameters, DQPTs may also be observed for quenches lying entirely within the initial Chern phase. Additionally, we analyze the zeros of the boundary partition function discovering that while the zeros generally form two-dimensional structures resulting in one-dimensional critical times, infinitesimal quenches may lead to one-dimensional zeros with zero-dimensional critical times provided the quench distance scales appropriately with the system size. This is strikingly manifested in the nature of non-analyticies of the dynamical free energy, revealing a logarithmic singularity. In addition, following recent experimental advances in observing the dynamical Fisher zeros of the Loschmidt overlap amplitude through azimuthal Bloch phase vortices by Bloch-state tomography, we rigorously investigate the same in WSMs. Finally, we establish the relationship between the dimension of the critical times and the presence of dynamical vortices, demonstrating that only one-dimensional critical times arising from two-dimensional manifolds of zeros of the boundary partition function lead to dynamical vortices.
description: 15 pages, 9 figures
Additional file 3 of Reversal of endocrine resistance in breast cancer: interrelationships among 14-3-3ζ, FOXM1, and a gene signature associated with mitosis
Creators: name: Bergamaschi, Anna
name: Christensen, Barbara L
name: Katzenellenbogen, Benita S
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 3
Additional file 5 of Reversal of endocrine resistance in breast cancer: interrelationships among 14-3-3ζ, FOXM1, and a gene signature associated with mitosis
Creators: name: Bergamaschi, Anna
name: Christensen, Barbara L
name: Katzenellenbogen, Benita S
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 5
Physics and Derivatives: Effective-Potential Path-Integral Approximations of Arrow-Debreu Densities
Creators: name: Capriotti, Luca
name: Vaia, Ruggero
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: We show how effective-potential path-integrals methods, stemming on a simple and nice idea originally due to Feynman and successfully employed in Physics for a variety of quantum thermodynamics applications, can be used to develop an accurate and easy-to-compute semi-analytical approximation of transition probabilities and Arrow-Debreu densities for arbitrary diffusions. We illustrate the accuracy of the method by presenting results for the Black-Karasinski and the GARCH linear models, for which the proposed approximation provides remarkably accurate results, even in regimes of high volatility, and for multi-year time horizons. The accuracy and the computational efficiency of the proposed approximation makes it a viable alternative to fully numerical schemes for a variety of derivatives pricing applications.
description: 12 pages, 4 figures