cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wigner's Dynamical Transition State Theory in Phase Space: Classical and Quantum
Creators: name: Waalkens, Holger
name: Schubert, Roman
name: Wiggins, Stephen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A quantum version of transition state theory based on a quantum normal form (QNF) expansion about a saddle-centre-...-centre equilibrium point is presented. A general algorithm is provided which allows one to explictly compute QNF to any desired order. This leads to an efficient procedure to compute quantum reaction rates and the associated Gamov-Siegert resonances. In the classical limit the QNF reduces to the classical normal form which leads to the recently developed phase space realisation of Wigner's transition state theory. It is shown that the phase space structures that govern the classical reaction d ynamicsform a skeleton for the quantum scattering and resonance wavefunctions which can also be computed from the QNF. Several examples are worked out explicitly to illustrate the efficiency of the procedure presented.
description: 132 pages, 31 figures, corrected version, Nonlinearity, 21 (2008) R1-R118
Identified particle measurements at large transverse momenta from p+p to Au+Au collisions at RHIC
Creators: name: Hollis, R. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Measurements of various particle species over an extended momentum range provide a sensitive experimental tool for investigating particle production mechanisms in hadronic collisions. Comparison of the spectral shapes from different collision centralities measured with the STAR detector at RHIC allows one to study the interplay of soft and hard particle production for mesons and investigate various baryon-meson effects. Systematic studies of identified particle spectra for various colliding systems and different incident energies provide additional insights toward the interplay between fragmentation and non-fragmentation contributions to the particle production. In these proceedings we present a systematic study of transverse momentum spectra for charged pions, protons and antiprotons from Au+Au and Cu+Cu data at sqrt(s_NN)=200 and 62.4 GeV as a function of collision centrality. We compare those measurements with p+p and d+Au data, investigating the system effects on energy loss.
description: 6 pages, 4 figures, proceedings for the Lake Louise Winter Institute 2007, 19th-24th February 2007, Alberta, Canada
The effects of frictional heating on the thermal, hydrologic, and mechanical response of a fault
Creators: name: Mase, Charles William
Publisher: name: University of British Columbia
Year: 2010

description: The mechanical response of a fault zone during an earthquake may be controlled by the diffusion of excess heat and fluid pressures generated by frictional heating. In this study a numerical model is formulated which incorporates the effects of frictional heating on the thermal, hydrologic, and mechanical response of a small patch of the failure surface. This model is used to examine the parameters that control the fault response, and to determine their critical range of values where thermal pressurization is significant. The problem has two time scales; a characteristic slip duration and a characteristic time for thermal pressurization. The slip duration is set by the fault geometry. The characteristic time for thermal pressurization is set by the slip rate, friction coefficient, and the thermal and hydraulic characteristics of the medium. Results suggest that the fault width, and hydraulic characteristics of the fault zone and adjacent medium are the primary parameters controlling the mechanical response. For narrow zones with a low porous medium compressibility (<10⁻⁹ Pa⁻¹) and permeability (<10⁻¹⁸ m²), frictional heating can cause fluid pressures to approach lithostatic values and the temperature rise to stabilize at a maximum value dependent on the pore-dilatational and transport properties of the porous medium. Moderate slip events where shear strains exceed two cause substantial strain-weakening of the fault and, consequently, large stress drops, accelerations, and displacements. Both the dynamic stress drop and total displacement decrease for zones with larger compressibility, permeability or width. The diffusion of excess pore pressures during the latter stages of slip causes strain hardening and a decline in slip velocity. Whether the patch experiences substantial strain-weakening or acts as a barrier depends on the shear strain across the fault. Thus it is possible for the patch to act as a barrier for small earthquakes but not for large ones. If the compressibility or permeability exceed 10⁻⁸ Pa⁻¹ or 10⁻¹⁴ m², or the shear strain is less than one, then the effects of frictional heating may be negligible and the fault will exhibit no strain-weakening characteristics. Consequently, the patch acts as barrier that halts or resists further fault motion regardless of shear strain. Extrapolation of these results suggests that spatial variations in fault width and hydraulic characteristics will cause a heterogeneous stress drop and fault slip over the failure surface, explaining many of the features of active faulting (e.g., barriers, non uniform slip, rupture stoppage, random ground accelerations, strong motions, and frequency-magnitude relations).
Quantum Heisenberg antiferromagnets in a uniform magnetic field: nonanalytic magnetic field dependence of the magnon spectrum
Creators: name: Kreisel, Andreas
name: Sauli, Francesca
name: Hasselmann, Nils
name: Kopietz, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We reexamine the 1/S-correction to the self-energy of the gapless magnon of a D-dimensional quantum Heisenberg antiferromagnet in a uniform magnetic field h using a hybrid approach between 1/S-expansion and non-linear sigma model, where the Holstein-Primakoff bosons are expressed in terms of Hermitian field operators representing the uniform and the staggered components of the spin-operators [N. Hasselmann and P. Kopietz, Europhys. Lett. {\bf{74}}, 1067 (2006)]. By integrating over the field associated with the uniform spin-fluctuations we obtain the effective action for the staggered spin-fluctuations on the lattice, which contains fluctuations on all length scales and does not have the cutoff ambiguities of the non-linear sigma model. We show that in dimensions D <= 3 the magnetic field dependence of the spin-wave velocity c(h) is non-analytic in h^2, with c(h) - c(0) proportional to h^2 \ln | h | in D=3, and c(h) - c(0) proportional to | h | in D=2. The frequency dependent magnon self-energy is found to exhibit an even more singular magnetic field dependence, implying a strong momentum dependence of the quasi-particle residue of the gapless magnon. We also discuss the problem of spontaneous magnon decay and show that in D > 1 dimensions the damping of magnons with momentum k is proportional to |k|^{2D -1} if spontaneous magnon decay is kinematically allowed.
description: 19 pages, 4 figures
Unlensing HST Observations of the Einstein Ring 1RXS J1131-1231: A Bayesian Analysis
Creators: name: Brewer, Brendon J.
name: Lewis, Geraint F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a source and lens reconstruction for the optical Einstein ring gravitational lens system RXS J1131-1231. We resolve detail in the source, which is the host galaxy of a $z=0.658$ quasar, down to a resolution of 0.045 arc seconds (this is the size of the smallest conclusively resolved structures, rather than the pixel scale), using a Bayesian technique with a realistic model for the prior information. The source reconstruction reveals a substantial amount of complex structure in the host galaxy, which is $\sim$ 8 kpc in extent and contains several bright compact substructures, with the quasar source residing in one of these bright substructures. Additionally, we recover the mass distribution of the lensing galaxy, assuming a simply-parameterised model, using information from both the quasar images and the extended images. This allows a direct comparison of the amount of information about the lens that is provided by the quasar images in comparison to the extended images. In this system, we find that the extended images provide significantly more information about the lens than the quasar images alone, especially if we do not include prior constraints on the central position of the lens.
description: MNRAS accepted
Modules-at-infinity for quantum vertex algebras
Creators: name: Li, Haisheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B69

description: This is a sequel to \cite{li-qva1} and \cite{li-qva2} in a series to study vertex algebra-like structures arising from various algebras such as quantum affine algebras and Yangians. In this paper, we study two versions of the double Yangian $DY_{\hbar}(sl_{2})$, denoted by $DY_{q}(sl_{2})$ and $DY_{q}^{\infty}(sl_{2})$ with $q$ a nonzero complex number. For each nonzero complex number $q$, we construct a quantum vertex algebra $V_{q}$ and prove that every $DY_{q}(sl_{2})$-module is naturally a $V_{q}$-module. We also show that $DY_{q}^{\infty}(sl_{2})$-modules are what we call $V_{q}$-modules-at-infinity. To achieve this goal, we study what we call $§$-local subsets and quasi-local subsets of $\Hom (W,W((x^{-1})))$ for any vector space $W$, and we prove that any $§$-local subset generates a (weak) quantum vertex algebra and that any quasi-local subset generates a vertex algebra with $W$ as a (left) quasi module-at-infinity. Using this result we associate the Lie algebra of pseudo-differential operators on the circle with vertex algebras in terms of quasi modules-at-infinity.
description: Latex, 48 pages
Optimal estimation of entanglement
Creators: name: Genoni, Marco G.
name: Giorda, Paolo
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement does not correspond to any observable and its evaluation always corresponds to an estimation procedure where the amount of entanglement is inferred from the measurements of one or more proper observables. Here we address optimal estimation of entanglement in the framework of local quantum estimation theory and derive the optimal observable in terms of the symmetric logarithmic derivative. We evaluate the quantum Fisher information and, in turn, the ultimate bound to precision for several families of bipartite states, either for qubits or continuous variable systems, and for different measures of entanglement. We found that for discrete variables, entanglement may be efficiently estimated when it is large, whereas the estimation of weakly entangled states is an inherently inefficient procedure. For continuous variable Gaussian systems the effectiveness of entanglement estimation strongly depends on the chosen entanglement measure. Our analysis makes an important point of principle and may be relevant in the design of quantum information protocols based on the entanglement content of quantum states.
description: 9 pages, 2 figures, v2: minor corrections
On the connection between Hamilton and Lagrange formalism in Quantum Field Theory
Creators: name: Villalba-Chavez, Selym
name: Alkofer, Reinhard
name: Schwenzer, Kai
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The connection between the Hamilton and the standard Lagrange formalism is established for a generic Quantum Field Theory with vanishing vacuum expectation values of the fundamental fields. The Effective Actions in both formalisms are the same if and only if the fundamental fields and the momentum fields are related by the stationarity condition. These momentum fields in general differ from the canonical fields as defined via the Effective Action. By means of functional methods a systematic procedure is presented to identify the full correlation functions, which depend on the momentum fields, as functionals of those usually appearing in the standard Lagrange formalism. Whereas Lagrange correlation functions can be decomposed into tree diagrams the decomposition of Hamilton correlation functions involves loop corrections similar to those arising in n-particle effective actions. To demonstrate the method we derive for theories with linearized interactions the propagators of composite auxiliary fields and the ones of the fundamental degrees of freedom. The formalism is then utilized in the case of Coulomb gauge Yang-Mills theory for which the relations between the two-point correlation functions of the transversal and longitudinal components of the conjugate momentum to the ones of the gauge field are given.
description: 25 pages, 24 figures, revised and extended version with an explicit application of the formalism to Coulomb gauge QCD
Critical Behavior in the Gravitational Collapse of a Scalar Field with Angular Momentum in Spherical Symmetry
Creators: name: Olabarrieta, Ignacio
name: Ventrella, Jason F.
name: Choptuik, Matthew W.
name: Unruh, W. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the critical collapse of a massless scalar field with angular momentum in spherical symmetry. In order to mimic the effects of angular momentum we perform a sum of the stress-energy tensors for all the scalar fields with the same eigenvalue, l, of the angular momentum operator and calculate the equations of motion for the radial part of these scalar fields. We have found that the critical solutions for different values of l are discretely self-similar (as in the original l=0 case). The value of the discrete, self-similar period, Delta_l, decreases as l increases in such a way that the critical solution appears to become periodic in the limit. The mass scaling exponent, gamma_l, also decreases with l.
description: 10 pages, 8 figures
Association between young learners' English language performance and teacher proficiency and experience with English
Creators: name: Loder Buechel, Laura
Publisher: name: Zenodo
Year: 2014
Subjects: teacher effectiveness
early foreign language instruction
English language teaching
teacher qualification
teacher training

description: Elementary school English language teachers in Swiss public schools often undergo criticism due to their supposed lack of English language proficiency though this is only one small part of the full set of skills necessary for certification. This study set out to discover if young learner performance in reading, writing and listening after one or two years of instruction with the same teacher is associated with the teacher’s measured language proficiency, with the teacher’s feelings of improvement, with the teacher’s contact with English outside the classroom as well as with teacher profiles of time spent on reading, writing, speaking and listening skills in the classroom.
 Findings from this study suggest that neither teacher language proficiency nor teacher exposure to English outside of the classroom are determining factors in learner performance in the first two years of English instruction - indeed high levels of teacher proficiency in speaking and grammar here are negatively associated with learner performance. In this study, what positively associates with leaner performance is a teacher’s feeling of continually improving his or her speaking skills and instructional time on certain combinations of language skills. Implications from this research should help improve English language teaching effectiveness by refining priorities in teacher training.
description: +repphzhbib2014F
Results of the IGEC-2 search for gravitational wave bursts during 2005
Creators: name: 2 Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The network of resonant bar detectors of gravitational waves resumed coordinated observations within the International Gravitational Event Collaboration (IGEC-2). Four detectors are taking part in this collaboration: ALLEGRO, AURIGA, EXPLORER and NAUTILUS. We present here the results of the search for gravitational wave bursts over 6 months during 2005, when IGEC-2 was the only gravitational wave observatory in operation. The network data analysis implemented is based on a time coincidence search among AURIGA, EXPLORER and NAUTILUS, keeping the data from ALLEGRO for follow-up studies. With respect to the previous IGEC 1997-2000 observations, the amplitude sensitivity of the detectors to bursts improved by a factor about 3 and the sensitivity bandwidths are wider, so that the data analysis was tuned considering a larger class of detectable waveforms. Thanks to the higher duty cycles of the single detectors, we decided to focus the analysis on three-fold observation, so to ensure the identification of any single candidate of gravitational waves (gw) with high statistical confidence. The achieved false detection rate is as low as 1 per century. No candidates were found.
description: 10 pages, to be submitted to Phys. Rev. D
Exploring upgrade options for the CESSDA Data Catalogue
Creators: name: Dolinar, Maja
name: Moilanen, Katja
name: Tuominen, Markus
name: Beuster, Benjamin
Publisher: name: Zenodo
Year: 2021

description: The CESSDA Data Catalogue (CDC) contains metadata of studies from CESSDA service providers (SPs) and serves as an entry point for search and discovery of European social science data. The CDC has been present in the European research space for several years, but its development has been hampered by metadata harmonisation and technical support issues. The goal of the CDC Upgrade Task group under Agenda 21-24 is to develop a list of recommended features and updates for the next version of CDC, including search and discovery of variable-level information. Based on desk research of available resources, a survey of SPs about needed improvements of the CDC, and an analysis of their variable-level metadata examples, we have developed a list of recommendations for the next CDC release. The challenge is to either build the CDC on the SPs' existing metadata (i.e., primarily DDI Codebook) or to advocate for a metadata upgrade (i.e., DDI Lifecycle, currently used by only a handful of SPs). The result could be limited functionality for end-users who want to search and find variables documented in different languages. The goal of this presentation is to give a first insight into possible future developments of the catalogue.
Two-atom van-der-Waals forces with one atom excited: the identical atoms limit I
Creators: name: Sánchez-Cánovas, J.
name: Donaire, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute the conservative van-der-Waals forces between two atoms, one of which is initially excited, in the limit of identical atoms. Starting with the perturbative calculation of the interaction between two dissimilar atoms, we show that a time-dependent approach in the weak-interaction approximation is essential in considering the identical atoms limit in the perturbative regime. In this limit we find that, at leading order, the van-der-Waals forces are fully-resonant and grow linearly in time, being different upon each atom. The resultant net force upon the two-atom system is related to the directionality of spontaneous emission, which results from the violation of parity symmetry. In contrast to the usual stationary van-der-Waals forces, the time-dependent conservative forces cannot be written as the gradients of the expectation values of the interaction potentials, but as the expectation values of the gradients of the interaction potentials only.
description: 10 pages, 6 figures
SCIENTISTS' OPINIONS ABOUT GENDER THEORY
Creators: name: Khaydarova, Nigora
Publisher: name: Zenodo
Year: 2023

description: This article deals with related theories of gender studies and linguists, which are the subject of intense debate among contemporary linguistics scholars. Based on the opinion of scientists,  gender differences in speech and language create gender stereotypes that arise from the social roles of men and women and influence the self-determination of a person's gender according to sociocultural principles and norms. The basis for the formation of gender stereotypes is the concepts of femininity and masculinity, which later underwent serious changes, expressing the contradiction between a person's biological sex and the psychological manifestations of gender.
title: Plato on time as a cosmic phenomenon
Creators: name: Lazzarini, Lorenzo
Publisher: name: University of St Andrews
Year: 2020

description: The thesis presents an original interpretation of the account of time in the Timaeus (37c6-39e2), arguing that time in Plato is best conceived of as a cosmic phenomenon. In Part I, my view is contrasted in crucial respects with the consensus reading, that focuses on the metaphysical definition (time is a moving image of eternity, 37d5) and downplays the importance of the cosmos and the planets in the creation of time. I reject the standard reading of αἰών as ‘eternity’ and take it instead as a feature that is essential to the model qua living being. It follows that the creation of time – being the image of αἰών – is essential to the cosmic living being. Time, however, is best defined as a cosmic phenomenon, because it is constituted by the living motion of the cosmos and identified with the visible revolutions of the planets. In the continuation of the thesis, I examine two essential aspects of Plato’s account that need further enquiry – life and structure. In Part II I focus on the semantic history of αἰών and argue that in Plato, αἰών acquires a paradigmatic function in relation to time, while still retaining the core of its traditional meaning as ‘lifespan’. In fact, αἰών and time are both defined by Plato as totalities of life, although αἰών consists in an undivided unity, whereas time is structured in sequences of parts composing a whole. In Part III I focus on how the planets make the periods of the cosmic soul visible and, as a consequence, display the enumerable structure of time. That structure consists in fact in the visible patterns of changing configurations the planets display. In doing so, they mark out sequences of units, whose optimality makes time the best instantiation of number in the physical world.
The VLA-COSMOS Survey: III. Further Catalog Analysis and the Radio Source Counts
Creators: name: Bondi, M.
name: Ciliegi, P.
name: Schinnerer, E.
name: Smolcic, V.
name: Jahnke, K.
name: Carilli, C.
name: Zamorani, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The VLA-COSMOS Large Project has imaged the 2 sq.deg. COSMOS field with a resolution of 1.5 arcsec and a sensitivity of about 11 microJy (1 sigma) yielding to a catalog of about 3600 radio sources. In this paper we present a further analysis of the VLA-COSMOS Large Project catalog of radio sources aimed to: 1) quantify and correct for the effect of bandwidth smearing in the catalog, 2) determine the incompleteness produced by the noise bias and the resolution bias in the new catalog and 3) derive the radio source counts at 1.4 GHz. The effect of bandwidth smearing on the radio sources in the catalog was quantified comparing the peak and total flux densities in the final mosaic and in each of the individual pointings where the source was closest to the center of the field. We find that the peak flux densities in the original VLA-COSMOS Large Project catalog have to be divided by a factor about 0.8 or 0.9, depending on the distance from the mosaic center. The completeness of the radio catalog has been tested using samples of simulated radio sources with different angular size distributions. These simulated sources have been added to the radio image and recovered using the same techniques used to produce the radio catalog. The fraction of missed sources as a function of the total flux density is a direct measure of the incompleteness. Finally, we derived the radio source counts down to 60 microJy with unprecedented good statistics. Comparison to the findings of other surveys shows good agreement in the flux density range 0.06-1 mJy confirming the upturn at about 0.5 mJy and a possible decline of the source counts below about 0.1 mJy.
description: 23 pages, 6 figure. Accepted for publication in Astrophysical Journal
Lightweight self-conjugate nucleus $^{80}$Zr
Creators: name: Hamaker, A.
name: Leistenschneider, E.
name: Jain, R.
name: Bollen, G.
name: Giuliani, S. A.
name: Lund, K.
name: Nazarewicz, W.
name: Neufcourt, L.
name: Nicoloff, C.
name: Puentes, D.
name: Ringle, R.
name: Sumithrarachchi, C. S.
name: Yandow, I. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Protons and neutrons in the atomic nucleus move in shells analogous to the electronic shell structures of atoms. Nuclear shell structure varies across the nuclear landscape due to changes of the nuclear mean field with the number of neutrons $N$ and protons $Z$. These variations can be probed with mass differences. The $N=Z=40$ self-conjugate nucleus $^{80}$Zr is of particular interest as its proton and neutron shell structures are expected to be very similar, and its ground state is highly deformed. In this work, we provide evidence for the existence of a deformed double shell closure in $^{80}$Zr through high precision Penning trap mass measurements of $^{80-83}$Zr. Our new mass values show that $^{80}$Zr is significantly lighter, and thus more bound than previously determined. This can be attributed to the deformed shell closure at $N=Z=40$ and the large Wigner energy. Our statistical Bayesian model mixing analysis employing several global nuclear mass models demonstrates difficulties with reproducing the observed mass anomaly using current theory.
description: 11 pages; 5 figures; submitted version, revised version accepted in Nature Physics pending minor revisions
Data providers package for reporting Pesticide Residues (official data reporting phase) SSD1
Creators: name: European Food Safety Authority
Publisher: name: Zenodo
Year: 2019
Subjects: subject: pesticide residues
subject: monitoring
subject: data collection
subject: Standard Sample Description
subject: MRL
subject: Risk ASsessment
subject: http://id.agrisemantics.org/gacs/C3009
subject: http://id.agrisemantics.org/gacs/C2724
subject: http://id.agrisemantics.org/gacs/C3204
subject: http://id.agrisemantics.org/gacs/C1146
subject: http://id.agrisemantics.org/gacs/C846
subject: http://id.agrisemantics.org/gacs/C1470
subject: http://id.agrisemantics.org/gacs/C16651

description: Regulation (EC) No 396/2005 on Maximum Residue Levels of pesticides in or on food and feed of plant and animal origin requires the Member States to carry out official controls on pesticide residues in food.  In this framework, EFSA is in charge of collecting and analysing data in order to deliver the annual reports on the results from the national pesticides monitoring activities.

This data providers package provides the data collection configuration and supporting materials for reporting Pesticide Residues in line with the Standard Sample Description version 1 (SSD1). These are to be used for the official data reporting phase.

This package includes:

	The Standard Sample Description Version 1 XSD schema definition for PESTICIDE reporting
	The General and Pesticide Residues SSD1 specific business rules applied for the automatic validation of the submitted datasets
	Two Excel tool for SSD1 XML creation: Excel Tool FLAT and Excel Tool With Methods
	A working example file for each Excel tool
	Guidance on the Excel tool for XML creation

References to the main Standard Sample Description publications are given in the Related Identifiers
description: EU; PDF; data.collection@efsa.europa.eu
Localized and extended patterns in the cubic-quintic Swift-Hohenberg equation on a disk
Creators: name: Verschueren, Nicolas
name: Knobloch, Edgar
name: Uecker, Hannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Axisymmetric and nonaxisymmetric patterns in the cubic-quintic Swift-Hohenberg equation posed on a disk with Neumann boundary conditions are studied via numerical continuation and bifurcation analysis. Axisymmetric localized solutions in the form of spots and rings known from earlier studies persist and snake in the usual fashion until they begin to interact with the boundary. Depending on parameters, including the disk radius, these states may or may not connect to the branch of domain-filling target states. Secondary instabilities of localized axisymmetric states may create multi-arm localized structures that grow and interact with the boundary before broadening into domain filling states. High azimuthal wavenumber wall states referred to as daisy states are also found. Secondary bifurcations from these states include localized daisies, i.e., wall states localized in both radius and angle. Depending on parameters, these states may snake much as in the one-dimensional Swift-Hohenberg equation, or invade the interior of the domain, yielding states referred to as worms, or domain-filling stripes.
Report on the technical requirements for the electrical power measurements and definition of the measurands for nacelle test benches
Creators: name: Dubowik, Alexander
name: Mohns, Enrico
name: Mester, Christian
name: Heller, Marcel
name: Zweiffel, Maximilian
name: Quintanilla Crespo, Juan Manuel
name: Hällström, Jari
name: Weidinger, Paula
Publisher: name: Zenodo
Year: 2021
Subjects: WindEFCY
EMPIR
Horizon2020
19ENG08
Nacelle efficiency
Electrical power measurement
EURAMET

description: This report has been produced within the EMPIR project entitled Traceable Mechanical and Electrical Power Measurement for Efficiency Determination of Wind Turbines or 19ENG08 WindEFCY. More information about this collaborative research project can be found on the project’s website https://www.ptb.de/empir2020/windefcy/home/. This report lists the technical requirements for the electrical power measurements and the definition of the measurands for nacelle test benches.
description: The project 19ENG08 – WindEFCY has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme.
Large Scale Structure Prediction of Near-Stoichiometric Magnesium Oxide Based on a Machine-Learned Interatomic Potential: Novel Crystalline Phases and Oxygen-Vacancy Ordering
Creators: name: Tahmasbi, Hossein
name: Goedecker, Stefan
name: Ghasemi, S. Alireza
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using a fast and accurate neural network potential we are able to systematically explore the energy landscape of large unit cells of bulk magnesium oxide with the minima hopping method. The potential is trained with a focus on the near-stoichiometric compositions, in particular on suboxides, i.e., Mg$_x$O$_{1-x}$ with $0.50
description: 11 pages, 9 figures
Recognizing the Shades of Grey in the Diagnosis of COPD
Creators: name: Neder, J. Alberto
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Recognizing the Shades of Grey in the Diagnosis of COPD
Unparticle physics on direct CP violation
Creators: name: Chen, Chuan-Hung
name: Geng, Chao-Qiang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The effects of the peculiar CP conserving phases in unparticle propagators are explored. We find that the phases have a great impact on CP-violation. We adopt the decays $B_{d}\to π^{+} π^{-}$ and $B_{d}\to \ell^{-}\ell^{+}$ as the illustrators to demonstrate the influences of these phases on the direct CP asymmetries. In particular, we emphasize that unparticle physics is the only model suggested to date that could give the direct CP asymmetries in $B_d\to \ell^{-} \ell^{+}$ as large as 15%. We also point out that the unparticle phases could be probed in $B\to K^* \ell^{+} \ell^{-}$ decays by using T-odd correlations.
description: 4 pages, 3 figures, paper revised, references added, new T-odd observables are introduced, published version
Escherichia coli (Migula, 1895) Castellani & Chalmers
Creators: name: Zhang, Xinhua
name: Teixeira da Silva, Jaime A.
name: Niu, Meiyun
name: Zhang, Ting
name: Liu, Huanfang
name: Zheng, Feng
name: Yuan, Yunfei
name: Li, Yuan
name: Fang, Lin
name: Zeng, Songjun
name: Ma, Guohua
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Bacteria
Proteobacteria
Gammaproteobacteria
Enterobacteriales
Enterobacteriaceae
Escherichia
Escherichia coli

description: 5.5. Expression of recombination SaNES/LIS in E. coli and purification
For heterologous expression, the SaNES/LIS cDNA fragments were amplified using high-fidelity DNA polymerase PrimerStar (Takara Bio Inc.) and cloned into the pET-28a vector at Bam HI and Xho I sites using specific primers (Table 2). The infusion constructs were verified by DNA sequencing at BGI. The recombinant plasmids were then transformed into the E. coli Rossetta 2 (DE3) strain. A single positive colony was incubated overnight at 37 ◦ C and shaken at 200 rpm in Luria-Bertani (LB) liquid medium with 34 μg/ml chloramphenicol and 100 μg/ml kanamycin. Overnight cultures were diluted 1: 100 with LB supplemented with the same antibiotics as described above until an OD 600 between 0.6 and 0.8 was achieved. IPTG was then added to a final concentration of 0.2 mM and the culture was incubated for an additional 24 h at 16 ◦ C and 150 rpm. Cells were harvested by centrifugation at 7000 g and 4 ◦ C for 5 min, and pellets were resuspended in lysis buffer (10 mM imidazole, 300 mM NaCl, 50 mM NaH 2 PO 4, pH 8.0) containing 1 mM PMSF and 0.5 mg /ml lysozyme. The incubated pellets were disrupted by sonication for 30 cycles (pulse on for 5 s, pulse off for 5 s, 30% amplitude) and the lysate was centrifuged at 12,000 rpm for 30 min. Recombinant His-tagged protein was purified by loading the lysate onto Ni-NTA Hispur Resin according to the manufacturer’ s protocol. The eluted proteins were further desalted on a PD-10 desalting column following the method by Jones et al. (2011). Protein concentration was determined by the Bradford (1976) method. SDS-polyacrylamide gel electrophoresis and Coomassie blue staining was used to confirm the presence of purified recombinant proteins.
description: Published as part of Zhang, Xinhua, Teixeira da Silva, Jaime A., Niu, Meiyun, Zhang, Ting, Liu, Huanfang, Zheng, Feng, Yuan, Yunfei, Li, Yuan, Fang, Lin, Zeng, Songjun & Ma, Guohua, 2021, Functional characterization of an Indian sandalwood (Santalum album L.) dual-localized bifunctional nerolidol / linalool synthase gene involved in stress response, pp. 1-12 in Phytochemistry (112610) (112610) 183 on page 10, DOI: 10.1016/j.phytochem.2020.112610, http://zenodo.org/record/8291922
STUDY OF THE PROBLEMS AND BENEFITS OF ARTIFICIAL INTELLIGENCE IN IMPROVING THE TEACHING OF GEOMETRIC AND PROJECTIVE PAINTING
Creators: name: Isakov, Jasurbek
name: Yulbarsov, Fahriddin
Publisher: name: Zenodo
Year: 2023

description: Artificial intelligence (AI) is revolutionizing numerous sectors, and education is no exception. This article aims to discuss the problem and advantages associated with employing AI in teaching geometric and projective painting. Traditional teaching methods often face challenges in providing personalized guidance, feedback, and individualized instruction, which hampers students' acquisition of spatial visualization skills. Leveraging AI technologies such as machine learning and computer vision, teachers can now augment their roles by utilizing innovative tools that support differentiated instruction, automated evaluation, and benefit students with tailored learning experiences.
Forecasting election results by studying brand importance in online news
Creators: name: Colladon, A. Fronzetti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: H.0; J.4; I.2.7

description: This study uses the semantic brand score, a novel measure of brand importance in big textual data, to forecast elections based on online news. About 35,000 online news articles were transformed into networks of co-occurring words and analyzed by combining methods and tools from social network analysis and text mining. Forecasts made for four voting events in Italy provided consistent results across different voting systems: a general election, a referendum, and a municipal election in two rounds. This work contributes to the research on electoral forecasting by focusing on predictions based on online big data; it offers new perspectives regarding the textual analysis of online news through a methodology which is relatively fast and easy to apply. This study also suggests the existence of a link between the brand importance of political candidates and parties and electoral results.
The Relationship Between Women's Perceptions of the Campus Environment and Self-Esteem as Moderated by Women's Identity Attitudes
Creators: name: Ossana, Shelly Lynne
Publisher: name: Digital Repository at the University of Maryland
Year: 1986

description: An examination of the relationships among undergraduate
women's self-esteem, perceptions of the campus environment, and
women's identity attitudes (i.e., attitudes about, and
identification with, women and the sociopolitical issues unique
to women) was conducted. 649 female undergraduates, freshman
through seniors, were surveyed in classes at the University of
Maryland, College Park campus. Results indicated that Encounter
(characterized by rejection of previously held stereotypical
views about women and heightened awareness about the sociopolitical
issues unique to women) and Immersion-Emersion
(characterized by active rejection of male supremacist values and
beliefs) attitudes were positively related to perceptions of
gender bias in the campus environment and inversely related to
self-esteem. Internalization (chararacterized by acceptance and
pride in one's women's identity) attitudes were inversely related
to perceptions of environmental gender bias and positively
related to self-esteem. Perceptions of gender bias were
inversely related to self-esteem, indicating that the more
negatively one viewed oneself the more likely one was to perceive
the campus environment as biased, or conversely that the more
positively one viewed oneself the less likely one was to perceive
inequities reflecting gender bias in the campus environment.
Implications for counseling and future research are discussed.
Efficient enzymatic degradation of poly(ε-caprolactone) by a commercial lipase
Creators: name: Romano, Angela
name: Rosato, Antonella
name: Totaro, Grazia
name: Zanaroli, Giulio
name: Celli, Annamaria
name: Sisti, Laura
Publisher: name: Zenodo
Year: 2021

description: The production and use of plastics have been growing in the past decades. Most of these plastics are fossil fuel-based and non-degradable, thus they accumulate in the environment causing severe problems. The use of plastic-degrading enzymes in the treatment of plastic waste, thus the use of biodegradable polymers has gained growing attention in different fields, including packaging, agriculture and medicine. Aliphatic polyesters are the most promising biodegradable plastics because of their high susceptibility to the attack of hydrolytic enzymes and of many microorganisms naturally occurring in the environment. Among them, poly(ε-caprolactone) (PCL) is a semicrystalline aliphatic polyester, widely used in biomedical and packaging applications, because of its biocompatibility and biodegradability. This study investigates the degradation mechanism of two commercial PCL with different molecular weights (150*103 and 215*103 g/mol) by a commercial lipase from Candida sp. (CALB). The degradation mechanism is studied through weight loss measurements of polyester films combined to other analyses (i.e., GPC, 1H NMR and DSC) performed on the residual solids after incubation with the enzyme, in order to understand molecular and chemical modifications induced by lipase. Moreover, a cleaving action mode for the enzyme (endo- and/or exo-type) on both PCL was also proposed based on the identification and quantification, via GPC, 1H NMR and HPLC-RID analyses, of residual oligomers and monomers released as degradation products in the liquid fraction. Results showed that lipase CALB degrade the polymers homogeneously from the surface through an erosion mechanism, with an exo-type cleaving action mode, and the degradation rate is slower with a higher molecular weight.
description: {"references": ["Liu, M., Zhang, T., Long, L., Zhang, R., & Ding, S. (2019). Efficient enzymatic degradation of poly (\u025b-caprolactone) by an engineered bifunctional lipase-cutinase. Polymer Degradation and Stability, 160, 120-125.", "Lim, H. A., Raku, T., & Tokiwa, Y. (2005). Hydrolysis of polyesters by serine proteases. Biotechnology letters, 27(7), 459-464."]}
Vortical Effects for Free Fermions on Anti-De Sitter Space-Time
Creators: name: Ambrus, Victor E.
name: Winstanley, Elizabeth
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Here, we study a quantum fermion field in rigid rotation at finite temperature on anti-de Sitter space. We assume that the rotation rate $Ω$ is smaller than the inverse radius of curvature $\ell ^{-1}$, so that there is no speed of light surface and the static (maximally-symmetric) and rotating vacua coincide. This assumption enables us to follow a geometric approach employing a closed-form expression for the vacuum two-point function, which can then be used to compute thermal expectation values (t.e.v.s). In the high temperature regime, we find a perfect analogy with known results on Minkowski space-time, uncovering curvature effects in the form of extra terms involving the Ricci scalar $R$. The axial vortical effect is validated and the axial flux through two-dimensional slices is found to escape to infinity for massless fermions, while for massive fermions, it is completely converted into the pseudoscalar density $-i {\bar ψ} γ^5 ψ$. Finally, we discuss volumetric properties such as the total scalar condensate and the total energy within the space-time and show that they diverge as $[1 - \ell^2 Ω^2]^{-1}$ in the limit $Ω\rightarrow \ell ^{-1}$.
description: 54 pages, 10 figures
Studio del meccanismo di degradazione enzimatica di poliesteri commerciali
Creators: name: Romano, Angela
name: Rosato, Antonella
name: Totaro, Grazia
name: Celli, Annamaria
name: Sisti, Laura
name: Zanaroli, Giulio
Publisher: name: Zenodo
Year: 2021

description: La produzione e il consumo di plastica sono largamente cresciuti negli ultimi decenni. La maggior parte di queste plastiche derivano da fonti fossili e non sono degradabili, per cui tendono ad accumularsi nell’ambiente. L’uso di enzimi e di plastiche biodegradabili per il trattamento di rifiuti plastici si sta sviluppando in diversi settori, quali packaging, agricoltura e medicina. Tra le plastiche biodegradabili, i poliesteri alifatici risultano essere i più suscettibili all’attacco di enzimi idrolitici e microrganismi. Questo studio indaga la degradazione enzimatica di due polimeri commerciali biodegradabili, i.e. poli(butilene succinato-co-adipato) (PBSA) e poli(ε-caprolattone) (PCL) e il meccanismo d’azione degli enzimi cutinasi da Fusarium solani e lipasi da Alcaligene sp. (QLM). Il PBSA è un poliestere alifatico che deriva da fonti rinnovabili. Si tratta di un copolimero semicristallino del poli(butilene succinato) (PBS), con l’acido adipico come co-monomero. L’alta biodegradabilità deriva dalla bassa cristallinità e dalla maggiore flessibilità delle catene polimeriche rispetto al PBS. Il PCL è un poliestere alifatico semicristallino che deriva da fonti fossili. È largamente utilizzato nel settore biomedico e nel packaging per via della sua biodegradabilità e biocompatibilità. Lo studio del meccanismo di degradazione enzimatica di questi due polimeri può essere utile nella gestione dei rifiuti plastici, e nella formulazione di nuovi materiali plastici biodegradabili.
description: {"references": ["Liu, M., Zhang, T., Long, L., Zhang, R., & Ding, S. (2019). Efficient enzymatic degradation of poly (\u025b-caprolactone) by an engineered bifunctional lipase-cutinase. Polymer Degradation and Stability, 160, 120-125.", "Lim, H. A., Raku, T., & Tokiwa, Y. (2005). Hydrolysis of polyesters by serine proteases. Biotechnology letters, 27(7), 459-464."]}
Invariants of genus 2 mutants
Creators: name: Morton, H. R.
name: Ryder, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: Pairs of genus 2 mutant knots can have different Homfly polynomials, for example some 3-string satellites of Conway mutant pairs. We give examples which have different Kauffman 3-variable polynomials, answering a question raised by Dunfield et al in their study of genus 2 mutants. While pairs of genus 2 mutant knots have the same Jones polynomial, given from the Homfly polynomial by setting v=s^2, we give examples whose Homfly polynomials differ when v=s^3. We also give examples which differ in a Vassiliev invariant of degree 7, in contrast to satellites of Conway mutant knots.
description: 16 pages, 20 figures
Computation of unirational fields (extended abstract)
Creators: name: Gutierrez, Jaime
name: Sevilla, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Symbolic Computation (cs.SC)
subject: Commutative Algebra (math.AC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.1.1; I.1.2

description: In this paper we present an algorithm for computing all algebraic intermediate subfields in a separably generated unirational field extension (which in particular includes the zero characteristic case). One of the main tools is Groebner bases theory. Our algorithm also requires computing computing primitive elements and factoring over algebraic extensions. Moreover, the method can be extended to finitely generated K-algebras.
description: 6 pages, 2 images (pictures of authors)
Heavy baryon properties with NLO accuracy in perturbative QCD
Creators: name: Groote, S.
name: Körner, J. G.
name: Pivovarov, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an analysis of the static properties of heavy baryons at next-to-leading order in the perurbative expansion of QCD. We obtain analytical next-to-leading order three-loop results for the two-point correlators of baryonic currents with one finite mass quark field for a variety of quantum numbers of the baryonic currents. We consider both the massless limit and the HQET limit of the correlator as special cases of the general finite mass formula and find agreement with previous results. We present closed form expressions for the moments of the spectral density. We determine the residues of physical baryon states using sum rule techniques.
description: 43 pages in LaTeX, including 3 figures