cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Description of the dynamics of a random chain with rigid constraints in the path integral framework
Creators: name: Ferrari, Franco
name: Paturej, Jaroslaw
name: Vilgis, Thomas A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we discuss the dynamics of a three dimensional chain which is described by generalized nonlinear sigma model The formula of the probability distribution of two topologically entangled chain is provided. The interesting case of a chain which can form only discrete angles with respect to the $z-$axis is also presented.
description: 4 pages. To appear in the proceedings of `Path Integrals - New Trends and Perspectives`, 23-28 September 2007, Dresden, Germany
Economic Policy in the Carter Administration
Creators: name: Meltzer, Allan
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: A new administration, a new Congress and a new corps of economic advisers is commonly the occasion to reconsider the strategy for the future, the successes and failures of the past, and the long-term consequences of current actions« Early impressions are subject to revision, in much the same way that economic statistics are revised, and I hope that my early impression of Carter administration policies will be as incorrect as the forecasts of those who found real meaning in the so-called "pause" last fall.
title: Controlling properties of metamaterials with chiral fields using light and chiral molecules
Creators: name: Kelly, Christopher
Publisher: name: University of Glasgow
Year: 2021

description: Metamaterials have unique and tuneable properties not found in nature, and the ability to control their properties is crucial to their applications. The desired properties can be attained through specific design of their physical structure, but often lack the ability to be dynamically control after being constructed. In this thesis it has been demonstrated that the properties of inorganic metafilms and chiral metamaterials can be manipulated post-fabrication by reversible perturbations from chiral electromagnetic fields and molecules. Such perturbations have been applied to chiral gold metamaterials that exhibit the plasmonic analogue of electromagnetically induced transparency. Circularly polarised light (that is chiral) and chiral molecules have been demonstrated to asymmetrically modify the coupling between electromagnetic modes in these metamaterials by their interactions with chiral nearfields. This experimental observation has then been validated by numerical electromagnetic simulations that replicate the effect, and confirm that asymmetries in the coupling are a result of differing optical chirality densities in the fields depending on the relative handedness of light, chiral nanostructure and chiral molecule. It has then also been shown that simulations can replicate asymmetries resulting from anisotropic chiral biomolecule (protein) layers on the metamaterial surface, by use of an anisotropic chiral response tensor. Luminescence spectroscopy has been used as a probe of changes in chemical symmetries of inorganic metafilms and metamaterials. Europium (III) oxide, Eu2O3, has been used owing to its strong luminescence and the sensitivity of those emissions to the europium symmetry environment. A luminescence microscope has been custom built and tested to optimise luminescence signal and stability. Chiral light interacting with unstructured films chiral nanostructures in the films have been shown to change the relative luminescence intensity of the hypersensitive transition in Eu2O3. A model describing the mechanism of these changes has been proposed involving the exchange of optical chirality between light and the films. From the continuity equation for the conservation of optical chirality density, it has been found that optical chirality from incident fields can be exchanged between materials at their interfaces. This exchange results in a bulk chiral polarisation of ions in the film that changes the electronic symmetry around the Eu3+ ion and its emission intensities. Electromagnetic simulations have validated this hypothesis by demonstrating an exchange of chirality into the film in a three-layer system (air, Eu2O3, polycarbonate).
Technology Implementation Model and Architectural Patterns for CEI Use Cases
Creators: name: Dalla Torre, Gianni
name: Bellussi, Elia
name: Dietrich, Mark
Publisher: name: Zenodo
Year: 2024
Subjects: Cloud
Edge
IoT

description: This white paper presents a technical implementation model and architectural patterns identified for Europe’s Cloud-Edge-IoT (CEI) market. In this white paper, the UNLOCK-CEI team examines each of the Considered Use Cases through a detailed structural analysis methodology. Each use case is categorised according to its possible architectural approaches for implementation, and common service requirements are identified for key architectural patterns. In total the original 63 Use Cases presented in D1.2 have been expanded to a list of 79 Use Cases and Use Case Solutions, which form the “Considered Use Cases” that are the foundation of this analysis.
Two-Jet Hadroproduction as a Measure of the Gluon at Small X
Creators: name: Martin, A. D.
name: Stirling, W. J.
name: Roberts, R. G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the proposal of the CDF collaboration that same-side two-jet production in $p\bar{p}$ collisions may be used to determine the gluon distribution at small $x$.
description: DTP/93/48 RAL-93-047 6 pages + 3 figures(available on request)
The superspace representation of Super Yang-Mills theory on NCG
Creators: name: Shimojo, Masafumi
name: Ishihara, Satoshi
name: Kataoka, Hironobu
name: Matsukawa, Atsuko
name: Sato, Hikaru
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A few years ago, we found the supersymmetric(SUSY) counterpart of the spectral triple which specified noncommutative geometry(NCG). Based on "the triple", we considered the SUSY version of the spectral action principle and had derived the action of super Yang--Mills theory, minimal supersymmetric standard model, and supergravity. In these theories, we used vector notation in order to express a chiral or an anti-chiral matter superfield. We also represented the NCG algebra and the Dirac operator by matrices which operated on the space of matter field. In this paper, we represent the triple in the superspace coordinate system $(x^μ,θ,\barθ)$. We also introduce "extracting operators" and the new definition of the supertrace so that we can also investigate the square of the Dirac operator on the Minkowskian manifold in the superspace. We finally re-construct the super Yang--Mills theory on NCG in the superspace coordinate to which we are familiar to describe SUSY theories.
description: arXiv admin note: text overlap with arXiv:1311.4671
Embeddings built on 19th century newspapers from Finland
Creators: name: Pivovarova, Lidia
name: Zosa, Elaine
name: MArjanen, Jani
Publisher: name: Zenodo
Year: 2019
Subjects: embeddings

description: Embeddins built on 19th century Finnish and Swedish newspapers from Finalnd. Used in the following papers, please cite at least one of them: @inproceedings{pivovarova2019word, title={Word Clustering for Historical Newspapers Analysis}, author={Pivovarova, Lidia and Marjanen, Jani and Zosa, Elaine}, booktitle={Ranlp Workshop on Language technology for Digital Humanities}, year={2019} } @inproceedings{marjanen2019clustering, title={Clustering ideological terms in historical newspaper data with diachronic word embeddings}, author={Marjanen, Jani and Pivovarova, Lidia and Zosa, Elaine and Kurunm{\"a}ki, Jussi}, booktitle={5th International Workshop on Computational History, HistoInformatics 2019}, year={2019}, organization={CEUR-WS} }
description: {"references": ["Pivovarova, Lidia, Jani Marjanen, and Elaine Zosa. \"Word Clustering for Historical Newspapers Analysis.\" Ranlp Workshop on Language technology for Digital Humanities. 2019.", "Marjanen, Jani, et al. \"Clustering ideological terms in historical newspaper data with diachronic word embeddings.\" 5th International Workshop on Computational History, HistoInformatics 2019. CEUR-WS, 2019."]}
Partial wave amplitudes and multiparticle production
Creators: name: Papadopoulos, Costas G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recursion relations for integrals of amplitudes over the phase space, i.e. for partial wave amplitudes, are introduced. In their simplest form these integrals are proportional to the s-wave amplitudes and represent rigorous lower bounds on the total cross sections. The connection with classical field equations in $D$ dimensions is established. Previous results on multiparticle amplitudes are easily reproduced.
description: 7 pages, CERN-TH.6971/93, (typing errors corrected)
Holographic Charged Fluid with Chiral Electric Separation Effect
Creators: name: Bu, Yanyan
name: Cai, Rong-Gen
name: Yang, Qing
name: Zhang, Yun-Long
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Hydrodynamics with both vector and axial currents is under study within a holographic model, consisting of canonical $U(1)_V\times U(1)_A$ gauge fields in an asymptotically AdS$_5$ black brane. When gravitational back-reaction is taken into account, the chiral electric separation effect (CESE), namely the generation of an axial current as the response to an external electric field, is realized naturally. Via fluid/gravity correspondence, all the first order transport coefficients in the hydrodynamic constitutive relations are evaluated analytically: they are functions of vector chemical potential $μ$, axial chemical potential $μ_5$ and the fluid's temperature $T$. Apart from the proportionality factor $μμ_5$, the CESE conductivity is found to be dependent on the dimensionless quantities $μ/T$ and $μ_5/T$ nontrivially. As a complementary study, frequency-dependent transport phenomena are revealed through linear response analysis, demonstrating perfect agreement with the results obtained from fluid/gravity correspondence.
description: 39 pages, 6 figures, 1 table; Matches published version, the main results are summarized in sec 1.1 and we thank the referee for valuable suggestions
Finite size and volume effects in line node semimetals: a first-principles investigation
Creators: name: Narayan, Awadhesh
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We systematically study the bulk and finite size effects on the band structure of prototypical line node materials using density functional theory based computations. For the bulk system, we analyze quantum oscillations with changes in the Fermi surface topology. We show that ultra thin slabs are gapped, with the first signatures of the line node appearing beyond a critical thickness. Further, motivated by possibility of tuning the bulk line node, we find that the line node radius is rather sensitive to bulk volume change. Based on this observation, we propose that application of pressure or suitable substrate engineering can be used as an effective means to control and tune the line node and the accompanying surface drumhead states.
description: 14 pages, 8 figures. Contribution to special issue of J. Phys. Chem. Solids on spin-orbit materials
Optical vector network analysis of ultra-narrow transitions in $^{166}$Er$^{3+}$:$^7$LiYF$_4$
Creators: name: Kukharchyk, N.
name: Sholokhov, D.
name: Morozov, O.
name: Korableva, S. L.
name: Cole, J. H.
name: Kalachev, A. A.
name: Bushev, P. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present optical vector network analysis (OVNA) of an isotopically purified $^{166}$Er$^{3+}$:$^7$LiYF$_4$ crystal. The OVNA method is based on generation and detection of modulated optical sideband by using a radio-frequency vector network analyzer. This technique is widely used in the field of microwave photonics for the characterization of optical responses of optical devices such as filters and high-Q resonators. However, dense solid-state atomic ensembles induce a large phase shift on one of the optical sidebands which results in the appearance of extra features on the measured transmission response. We present a simple theoretical model which accurately describes the observed spectra and helps to reconstruct the absorption profile of a solid-state atomic ensemble as well as corresponding change of the refractive index in the vicinity of atomic resonances.
description: 4 pages, 5 figures
Strongly Interacting Weyl Semimetals: Stability of the Semimetallic Phase and Emergence of Almost Free Fermions
Creators: name: Carlström, Johan
name: Bergholtz, Emil J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences
subject: 81T80

description: Using a combination of analytical arguments and state-of-the-art diagrammatic Monte Carlo simulations we show that the corrections to the dispersion in interacting Weyl semimetals are determined by the ultraviolet cutoff and the inverse screening length. If both of these are finite, then the diagrammatic series is convergent even in the low-temperature limit, which implies that the semimetallic phase remains stable. Meanwhile, the absence of a UV cutoff or screening results in logarithmic divergences at zero temperature. These results highlight the crucial impact of Coulomb interactions and screening, mediated e.g. trough the presence of parasitic bands, which are ubiquitous effects in real-world materials. Also, despite sizeable corrections from Coulomb forces, the contribution from the frequency dependent part of the self energy remains extremely small, thus giving rise to a system of effectively almost free fermions with a strongly renormalised dispersion.
description: 5 pages, 4 figures
Economic Policy After the 1979 Oil Shock
Creators: name: Meltzer, Allan
Publisher: name: Carnegie Mellon University
Year: 1991
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: If the President and the press accurately reflect current opinion, we are about to make another in the long series of mistakes in economic policy that have produced high inflation, slow growth and low investment. The press interprets every statistic as support for its view that we are in a recession. The President, and the Congressional Budget Office, agree that we are on the verge of recession. The public guessing game has now shifted from whether and when the recession will strike to how long and how deep the recession will be.
Using statistical models to depict the response of multi-timescale drought to forest cover change across climate zones
Creators: name: Li, Yan
name: Huang, Bo
name: Rust, Henning W.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: forest cover change
subject: climate zones
subject: Drought
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: The interaction between forest and climate exhibits regional differences due to a variety of biophysical mechanisms. Observational and modeling studies have investigated the impacts of forested and non-forested areas on a single climate variable, but the influences of forest cover change on a combination of temperature and precipitation (e.g., drought) have not been explored, owing to the complex relationship between drought conditions and forests. In this study, we use historical forest and climate datasets to explore the relationship between forest cover fraction and drought from 1992–2018. A set of linear models and an analysis of variance approach are utilized to investigate the effect of forest cover change, precipitation and temperature on droughts across different timescales and climate zones. Our findings reveal that precipitation is the dominant factor (among the three factors) leading to drought in the equatorial, temperate and snow regions, while temperature controls drought in the arid region. The impact of forest cover changes on droughts varies under different precipitation and temperature quantiles. Precipitation modulates forest cover's impact on long-term drought in the arid region, while temperature modulates the impact of forest cover changes on both short- and long-term drought in the arid region as well as only on long-term drought in the temperate region. Forest cover can also modulate the impacts of precipitation and temperature on drought. High forest cover leads to a combined effect of precipitation and temperature on long-term drought in arid and snow regions, while precipitation is the only dominant factor in low forest cover conditions. In contrast, low forest cover triggers a strong combined effect of precipitation and temperature on drought in the temperate region. Our findings improve the understanding of the interaction between land cover change and the climate system and further assist decision-makers to modulate land management strategies in different regions in light of climate change mitigation and adaptation.
Superconductivity of Bi-III phase of elemental Bismuth: insights from Muon-Spin Rotation and Density Functional Theory
Creators: name: Khasanov, Rustem
name: Luetkens, Hubertus
name: Morenzoni, Elvezio
name: Simutis, Gediminas
name: Schönecker, Stephan
name: Östlin, Andreas
name: Chioncel, Liviu
name: Amato, Alex
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using muon-spin rotation the pressure-induced superconductivity in the Bi-III phase of elemental Bismuth (transition temperature $T_{\rm c}\simeq7.05$ K) was investigated. The Ginzburg-Landau parameter $κ=λ/ξ=30(6)$ ($λ$ is the magnetic penetration depth, $ξ$ is the coherence length) was estimated which is the highest among single element superconductors. The temperature dependence of the superconducting energy gap [$Δ(T)$] reconstructed from $λ^{-2}(T)$ deviates from the weak-coupled BCS prediction. The coupling strength $2Δ/k_{\rm B}T_{\rm c}\simeq 4.34$ was estimated thus implying that Bi-III stays within the strong coupling regime. The Density Functional Theory calculations suggest that superconductivity in Bi-III could be described within the Eliashberg approach with the characteristic phonon frequency $ω_{\rm ln}\simeq 5.5$ meV. An alternative pairing mechanism to the electron-phonon coupling involves the possibility of Cooper pairing induced by the Fermi surface nesting.
description: 5 pages, 4 figures
title: Verteidigen Sie ihre Forschung
title: diversity ist gut, aber...
titleType: Subtitle
Creators: name: Razinskas, Stefan
name: Hemmersmeier, Jana
name: Schmidtgen, Tom
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Diversität
subject: Teamzusammensetzung
subject: Teamarbeit
subject: 300 Sozialwissenschaften::330 Wirtschaft::331 Arbeitsökonomie

description: Aus der Forschung wissen wir, dass gemischte Teams leistungsstärker sind. Doch ein Experiment zeigt: Das gilt nicht uneingeschränkt. Der Ökonom Stefan Razinskas hat divers zusammengesetzte Teams gegen reine Männer- oder Frauengruppen antreten lassen. Ergebnis: Unter Zeitdruck arbeiten gemischte Teams schlechter. Was heißt das für den Ruf nach mehr Diversität in Unternehmen?
Turbulence Closure for Mixing Length Theories
Creators: name: Jermyn, Adam S.
name: Lesaffre, Pierre
name: Tout, Christopher A.
name: Chitre, Shashikumar M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present an approach to turbulence closure based on mixing length theory with three-dimensional fluctuations against a two-dimensional background. This model is intended to be rapidly computable for implementation in stellar evolution software and to capture a wide range of relevant phenomena with just a single free parameter, namely the mixing length. We incorporate magnetic, rotational, baroclinic and buoyancy effects exactly within the formalism of linear growth theories with nonlinear decay. We treat differential rotation effects perturbatively in the corotating frame using a novel controlled approximation which matches the time evolution of the reference frame to arbitrary order. We then implement this model in an efficient open source code and discuss the resulting turbulent stresses and transport coefficients. We demonstrate that this model exhibits convective, baroclinic and shear instabilities as well as the magnetorotational instability (MRI). It also exhibits non-linear saturation behaviour, and we use this to extract the asymptotic scaling of various transport coefficients in physically interesting limits.
description: 17 pages, 20 figures, published in MNRAS. Figures 9-19 and C1 and associated text have been updated relative to MNRAS version to reflect minor changes due to corrections to the numerical code. Typographic errors have been corrected in equations 8, 10 and 11 and Figure 1 caption. Figure 3 legend updated to be clearer, and colors have been coordinated between Figures 1-3
The emotional decision maker: Exploring the role of affect in sweet-food choice
Creators: name: Mearns, Stella
Publisher: name: London South Bank University
Year: 2020

description: Obesity is now described as a pandemic (Hu, 2013) and a strong association has been identified between sugar consumption and excessive weight gain (e.g. Te Morenga, Mallard & Mann, 2013). Yet difficulty in establishing the factors driving this relationship leaves a dearth of research investigating causal mechanisms behind this global crisis (Lean, Astrup & Roberts, 2018). Food choice has been linked with cognitive processes involved in decision making (Peters, 2009), which in turn, has been linked with affect, i.e. mood and emotion (Lerner, Li, Valdesolo & Kassam, 2015). The aim of this thesis was therefore to explore the way in which both state and trait affect influence impulsive, sweet food decision making across three studies. As hypothesised and supported by affective regulation theory (Gross, 1998), results showed that as laboratory-induced mood (i.e. state affect) moved from positive to negative, the likelihood of choosing a chocolate reward over a non-food/neutral reward increased. This finding was conclusively evident when controlling for other factors such as chocolate craving in Study 2, ultimately highlighting the complex influence of affect on sweet food choice. Following this initial choice in Studies 1 and 2, subsequent hypotheses concerning impulse and self-control were not wholly supported as participants in both mood conditions were more likely to make impulsive decisions than exercise self-control. While affective regulation theory also explained those in negative moods making impulsive choices, an integrative framework was put forward to explain those in positive moods displaying the same behaviour (Andrade, 2005). In Studies 2 and 3 a willingness-to-pay (WTP) task was included to explore the relationship between state and trait affect and economic decisions concerning chocolate and high-sugar foods. While laboratory-induced mood did not predict WTP prices in Study 2, decreasing positive affectivity (i.e. trait affect) was found to significantly predict higher WTP prices for chocolate and high-sugar items, as hypothesised in Study 3. Reduced positive affectivity has been linked with symptoms of depression (Watson, Clark & Carey, 1988) which, in turn, is associated with an increase in desire for chocolate and sweet foods (Lester & Bernard, 1991). These results therefore provided robust evidence that higher spending for sweet items is connected to the absence of positive affectivity rather than presence of negative affectivity. Finally, increasing chocolate craving was found to significantly predict choices and increasing WTP prices for chocolate items in Studies 2 and 3. The potential parallel between chocolate and substances more commonly associated with addiction is discussed, together with the broad, practical implications of all findings in the context of sweet food choice and obesity.
Associated production of a Kaluza-Klein excitation of a gluon with a t t(bar) pair at the LHC
Creators: name: Guchait, M.
name: Mahmoudi, F.
name: Sridhar, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In Randall-Sundrum models, the Kaluza-Klein (KK) excitations of the gluon, g_{KK} have enhanced couplings to the right-handed quarks. In the absence of a gg g_{KK} coupling in these models, the single production of a g_{KK} from an initial gg state is not possible. The search for other production mechanisms at the LHC, therefore, becomes important. We suggest that the associated production of a g_{KK} with a t t(bar) pair is such a mechanism. Our study shows that through this process the LHC can probe KK gluon masses in the range of 2.8 -- 2.9 TeV.
description: 11 pages, 3 figures
Artworks' Bodies
Creators: name: Andrzejewski, Adam
Publisher: name: The Journal of Somaesthetics
Year: 2019

description: In this paper, I shed some light on specific kind of experiences when the appreciator takes the artwork as having a body. I shall propose a framework which allows to conceptualise artworks’ bodily dimension and which says something nontrivial about artworks and our relationship to them. I argue that some artworks are able to cast a specific sort of aesthetic atmosphere connected with their physical nature as well as appreciator’s somatic consciousness. The existence of such atmospheres might be a reason for shifting our understanding of artworks and human relations to them.
description: The Journal of Somaesthetics, Vol 5 No 1 (2019): BODY FIRST: Somaesthetics and Popular Culture
The $SU(2)$ Global Anomaly Through Level Circling
Creators: name: Axenides, Minos
name: Johansen, A.
name: Nielsen, H. B.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a novel manifestation of the $SU(2)$ global anomaly in an $SU(2)$ gauge theory with an odd number of chiral quark doublets and arbitrary Yukawa couplings. We argue that the massive 4-dim.($D=4$) Euclidean Dirac operator is nonhermitean with its spectrum of eigenvalues $(λ,-λ)$ lying in pairs in the complex plane. Consequently the existence of an odd number of normalizable zero modes of the 5-dim.($D=5$) massive Dirac operator is equivalent to a fermionic level exchange phenomenon, level ``circling'', under continuous topologically nontrivial deformations of the external gauge field. More generally global anomalies are a manifestation of fermionic level ``circling'' in any $SP(2n)$ gauge theory with an odd number of massive fermions in the spinor representation and arbitrary Yukawa couplings.
description: 14 pages, NBI-HE-93-51
Economic policies and actions in the Reagan administration
Creators: name: Meltzer, Allan
Publisher: name: Carnegie Mellon University
Year: 1970
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Discussions of the Reagan administration's economic policy often make the assumption, implicitly perhaps, that the administration came into office with a plan or policy. If we mean by policy what economists usually mean, that there was a specified or planned path, contingent on events—a set of rules or medium-term strategies to guide fiscal and monetary actions—there is little evidence that the administration had an economic policy. This is not simply a failure of the Reagan administration. The same criticism would apply to the fiscal and monetary actions of other administrations for the past twenty years or more.
Mars Reconnaissance Orbiter Context Camera Updated In-Flight Calibration
Creators: name: Walter, Sebastian H. G.
name: Aye, Klaus-Michael
name: Jaumann, Ralf
name: Postberg, Frank
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: context camera (CTX)
subject: in-flight calibration
subject: flat-field
subject: edge-darkening
subject: vignetting
subject: Mars
subject: 500 Naturwissenschaften und Mathematik::520 Astronomie::520 Astronomie und zugeordnete Wissenschaften

description: The image data of the Context Camera (CTX) of the Mars Reconnaissance Orbiter require a flat-field correction that is currently available as a plain text file in the Planetary Data System “Calib” folders for all CTX Enhanced Data Record releases or automatically implemented as part of the ctxcal application of the Integrated Software for Images and Spectrometers (ISIS). We noticed (a) differences between these two flat-fields and (b) residual edge darkening (vignetting) after applying ctxcal. This work examines in detail the edge-darkening effect over time and creates a new improved flat-field calibration file to be implemented into the ISIS ctxcal application as a new default. We introduce a method to quantify the vignetting effect and its residuals after regular ISIS calibration. With the old calibration, the amount of residual edge-darkening is about eight percent. We prove that the new calibration does remove the effect completely, does not introduce any artifacts and qualitatively and quantitatively validate newly calibrated images. Mosaics produced with images that have been calibrated with our new flatfield show immediately less striping issues, without the application of any standard mosaicking-related tone-matching techniques.
ВЗГЛЯД НА ТВОРЧЕСТВО ЧОЛПОНА
Creators: name: Джаксиликова, Айгерим
Publisher: name: Zenodo
Year: 2024

description: Это в статье Чолпона патриотизм в духе освещенный жизнь и креативность путь, и другой наших писателей и поэтов В Чолпону сообщил мнение о слово запускается.
Influence of post-deposition annealing on the chemical states of crystalline tantalum pentoxide films
Creators: name: Perez, Israel
name: Sosa, Victor
name: Gamboa, Fidel
name: Galindo, Jose Trinidad Elizalde
name: Enriquez-Carrejo, Jose L.
name: Farias, Rurik
name: Gonzalez, Pierre Giovanni Mani
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of post-deposition annealing (for temperatures from 848 K to 1273 K) on the chemical properties of crystalline Ta$_2$O$_5$ films grown on Si(100) substrates by radio frequency magnetron sputtering. The atomic arrangement, as determined by X-ray diffraction, is predominately hexagonal ($δ$-Ta$_2$O$_5$) for the films exposed to heat treatments at 948 K and 1048 K; orthorhombic ($β$-Ta$_2$O$_5$) for samples annealed at 1148 K and 1273 K; and amorphous for samples annealed at temperatures below 948 K. X-ray photoelectron spectroscopy for Ta $4f$ and O $1s$ core-levels were performed to evaluate the chemical properties of all films as a function of annealing temperature. Upon analysis, it is observed the Ta $4f$ spectrum characteristic of Ta in Ta$^{5+}$ and the formation of Ta-oxide phases with oxidation states Ta$^{1+}$, Ta$^{2+}$, Ta$^{3+}$, and Ta$^{4+}$. The study reveals that the increase in annealing temperature increases the percentage of the state Ta$^{5+}$ and the reduction of the others indicating that higher temperatures are more desirable to produce Ta$_2$O$_5$, however, there seems to be an optimal annealing temperature that maximizes the O\% to Ta\% ratio. We found that at 1273 K the ratio slightly reduces suggesting oxygen depletion.
description: 7 pages, 1 table, 6 figures. arXiv admin note: text overlap with arXiv:1804.02067, arXiv:1704.05514
Diamond-$α$ Jensen's Inequality on Time Scales
Creators: name: Ammi, Moulay Rchid Sidi
name: Ferreira, Rui A. C.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15; 39A13

description: The theory and applications of dynamic derivatives on time scales has recently received considerable attention. The primary purpose of this paper is to give basic properties of diamond-$α$ derivatives which are a linear combination of delta and nabla dynamic derivatives on time scales. We prove a generalized version of Jensen's inequality on time scales via the diamond-$α$ integral and present some corollaries, including Hölder's and Minkowski's diamond-$α$ integral inequalities.
description: This is a preprint of an article whose final and definitive form will appear in the \emph{Journal of Inequalities and Applications}, http://www.hindawi.com/journals/jia/. Accepted 07/April/2008
On Nelson-type Hamiltonians and abstract boundary conditions
Creators: name: Lampart, Jonas
name: Schmidt, Julian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81T10, 81T16, 81Q10

description: We construct Hamiltonians for systems of nonrelativistic particles linearly coupled to massive scalar bosons using abstract boundary conditions. The construction yields an explicit characterisation of the domain of self-adjointness in terms of boundary conditions that relate sectors with different numbers of bosons. We treat both models in which the Hamiltonian may be defined as a form perturbation of the free operator, such as Fröhlich's polaron, and renormalisable models, such as the massive Nelson model.
description: v3 accepted for publication in CMP
Proteins in a shear flow
Creators: name: Szymczak, P.
name: Cieplak, Marek
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The conformational dynamics of a single protein molecule in a shear flow is investigated using Brownian dynamics simulations. A structure-based coarse grained model of a protein is used. We consider two proteins, ubiquitin and integrin, and find that at moderate shear rates they unfold through a sequence of metastable states - a pattern which is distinct from a smooth unraveling found in homopolymers. Full unfolding occurs only at very large shear rates. Furthermore, the hydrodynamic interactions between the amino acids are shown to hinder the shear flow unfolding. The characteristics of the unfolding process depend on whether a protein is anchored or not, and if it is, on the choice of an anchoring point.
description: to be published in J. Chem. Phys
Multiphase Monte Carlo and Molecular Dynamics Simulations of Water and CO2 Intercalation in Montmorillonite and Beidellite
Creators: name: Makaremi, Meysam
name: Jordan, Kenneth
name: Guthrie, George
name: Myshakin, Evgeniy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Multiphase Gibbs ensemble Monte Carlo simulations were carried out to compute the free energy of swelling for Na-montmorillonite and Na-beidellite interacting with CO2 and H2O at pressure and temperature conditions relevant for geological storage aquifers. The calculated swelling free energy curves show stable monolayer and bilayer configurations of the interlayer species for Na-montmorillonite, while only the monolayer structure is found to be stable for Na-beidellite. The calculations show that CO2 is intercalated into hydrated clay phases at concentrations greatly exceeding its solubility in bulk water. This suggests that expandable clay minerals are good candidates for storing carbon dioxide in interlayer regions. For Na-beidellite the CO2 molecule distribution is mainly controlled by the position of the isomorphic substitutions, while for Na-montmorillonite the hydrated sodium ions play an important role in establishing the CO2 distribution.
Metallicity and superconductivity in doped strontium titanate
Creators: name: Collignon, Clément
name: Lin, Xiao
name: Rischau, Carl Willem
name: Fauqué, Benoît
name: Behnia, Kamran
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strontium titanate is a wide-gap semiconductor avoiding a ferroelectric instability thanks to quantum fluctuations. This proximity leads to strong screening of static Coulomb interaction and paves the way for the emergence of a very dilute metal with extremely mobile carriers at liquid-helium temperature. Upon warming, mobility decreases by several orders of magnitude. Yet, metallicity persists above room temperature even when the apparent mean-free-path falls below the electron wavelength. The superconducting instability survives at exceptionally low concentrations and beyond the boundaries of Migdal-Eliashberg approximation. An intimate connection between dilute superconductivity and aborted ferroelectricity is widely suspected. In this review, we will give a brief account of ongoing research on bulk strontium titanate as an insulator, a metal and a superconductor.
description: 14 pages and 6 figures; An invited review article for Annual Reviews of Condensed Matter Physics
Bitcoin Volatility Forecasting with a Glimpse into Buy and Sell Orders
Creators: name: Guo, Tian
name: Bifet, Albert
name: Antulov-Fantulin, Nino
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we study the ability to make the short-term prediction of the exchange price fluctuations towards the United States dollar for the Bitcoin market. We use the data of realized volatility collected from one of the largest Bitcoin digital trading offices in 2016 and 2017 as well as order information. Experiments are performed to evaluate a variety of statistical and machine learning approaches.
description: Full version of the paper published at IEEE International Conference on Data Mining (ICDM), 2018
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0069r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0069r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0069r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Reply to the comment on "Stochastic local operations and classical communication invariant and the residual entanglement for n qubits"
Creators: name: Li, D.
name: Li, X.
name: Huang, H.
name: Li, X.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have reviewed the comment in [3], posted on arXiv.org concerning our recent work in [1]. We reply to the comment in this paper.
description: 3 pages, no figures
Economic Input–Output Models for Environmental Life-Cycle Assessment
Creators: name: Hendrickson, Chris
name: Arpad  Horvath
name: Joshi, Satish
name: Lave, Lester B
Publisher: name: Carnegie Mellon University
Year: 1967
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Process and product models are commonly used for performing life-cycle assessments (LCAs) of the environmental impacts of materials and products through different stages of fabrication, use, and end-of-life options. In this article, we show that these models can be represented as process flow diagrams or as matrices of process interactions. In either representation, the inventory of environmental emissions and resources used is comparable, provided the process models are proportional in nature (any increase in product output produces a corresponding environmental burden). Matrix representations are advantageous if application cost, feedback flow, or speed of analysis is important. They are also useful in conjunction with comprehensive, general equilibrium models in which the system boundary of the problem (e.g., an LCA of a product) being analyzed is on the level of the national economy.
Event-triggered Learning for Resource-efficient Networked Control
Creators: name: Solowjow, Friedrich
name: Baumann, Dominik
name: Garcke, Jochen
name: Trimpe, Sebastian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Common event-triggered state estimation (ETSE) algorithms save communication in networked control systems by predicting agents' behavior, and transmitting updates only when the predictions deviate significantly. The effectiveness in reducing communication thus heavily depends on the quality of the dynamics models used to predict the agents' states or measurements. Event-triggered learning is proposed herein as a novel concept to further reduce communication: whenever poor communication performance is detected, an identification experiment is triggered and an improved prediction model learned from data. Effective learning triggers are obtained by comparing the actual communication rate with the one that is expected based on the current model. By analyzing statistical properties of the inter-communication times and leveraging powerful convergence results, the proposed trigger is proven to limit learning experiments to the necessary instants. Numerical and physical experiments demonstrate that event-triggered learning improves robustness toward changing environments and yields lower communication rates than common ETSE.
description: 7 pages, 4 figures, to appear in the 2018 American Control Conference (ACC)
Formation, fractionation and excitation of carbon monoxide in diffuse clouds
Creators: name: Liszt, H. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: Our aims are threefold: a) To compare the $uv$ and mm-wave results; b) to interpret 13CO and 12CO abundances in terms of the physical processes which separately and jointly determine them; c) to interpret observed J=1-0 rotational excitation and line brightness in terms of ambient gas properties. Methods: A simple phenomenological model of CO formation as the immediate descendant of quiescently-recombining HCO+ is used to study the accumulation, fractionation and rotational excitation of CO in more explicit and detailed models of H2-bearing diffuse/H I clouds Results: The variation of N(CO) with N(H2) is explained by quiescent recombination of a steady fraction n(HCO+)/n(H2) = 2 x 10^{-9}. Observed N(12CO))/N(13CO) ratios generally do not require a special chemistry but result from competing processes and do not provide much insight into the local gas properties, especially the temperature. J=1-0 CO line brightnesses directly represent N(CO), not N(H2), so the CO-H2 conversion factor varies widely; it attains typical values at N(12CO) \la 10^{16}cm^{-2}. Models of CO rotational excitation account for the line brightnesses and CO-H2 conversion factors but readily reproduce the observed excitation temperatures and optical depths of the rotational transitions only if excitation by H-atoms is weak -- as seems to be the case for the very most recent calculations of these excitation rates.
description: 11 pages, 6 figures, A&A 2007 or 2008 (in press)
Signature of edge states in resonant wave scattering
Creators: name: Xu, H. S.
name: Zhang, K. L.
name: Jin, L.
name: Song, Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Particle beam scattering is a conventional technique for detecting the nature of matter. We studied the scattering problem of a cluster connected to multiple leads. We established the connection between the eigenstate of the topological scattering center and the transmission and reflection amplitudes for the resonant scattering process. We discovered that as an application, this approach enables the detection of the edge state in the band gap for both Hermitian and non-Hermitian systems and the identification of the topology of a system. We investigated two types of Su-Schrieffer-Heeger chains as examples. In addition, we proposed a dynamic scheme through an evanescently coupled-waveguide array to detect the edge state on the basis of measured transmission intensity. Numerical simulation revealed that pattern visibility can be the signature of the edge states.
description: 10 pages, 7 figures