cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nitrate Pollution Control Policy and Its Impact on Farms' Performance: A Nonparametric Approach
Creators: name: Piot-Lepetit, Isabelle
name: Le Moing, Monique
name: Piot-Lepetit, Isabelle
name: Le Moing, Monique
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: Environmental regulations
subject: Manure management
subject: pig farming
subject: Data Envelopment Analysis

description: The purpose of this paper is to develop models with an individual and a collective management of the European Nitrate directive. The objective is to compare productive efficiency of farms under the two regimes. First, we develop a model that explicitly integrate the individual constraint on organic manure spreading. The individual threshold is introduced as a productive right. Then, we develop a framework that allows for modelling exchange of productive rights among producers. The simulation of a management of the spreading constrainst on organic manure at the regional level give an estimate of the potential gains that can be realised by allowing a collective maagement of the European environmental regulation. Models are based on a nonparametric frontier approach (Data Envelopment Analysis). An illustration is provided on a sample of farms from the French pig sector. Results highlights gains that would have been made if collective management had been allowed instead of an individual regulation as stated in the Nitrate directive.
Mesoptychia heterocolpos L. Soderstr. et Vana, Phytotaxa
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Jungermanniaceae
Mesoptychia
Mesoptychia heterocolpos

description: Mesoptychia heterocolpos (Thed. ex Hartm.) L.Söderstr. et Váňa,
Phytotaxa 65: 53, 2012 (see Váňa et al. 2012e). BASIONYM: Jungermannia heterocolpos Thed. ex Hartm., Handb. Skand. Fl., ed. 3: 328, 1838 (see Hartman 1838).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 71, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
The Fibonacci quasicrystal: case study of hidden dimensions and multifractality
Creators: name: Jagannathan, Anuradha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The distinctive electronic properties of quasicrystals stem from their long range structural order, with invariance under rotations and under discrete scale change, but without translational invariance. d-dimensional quasicrystals can be described in terms of lattices of higher dimension $D>d$, and many of their properties can be simply derived from analyses that take into account the extra "hidden" dimensions. In particular, as recent theoretical and experimental studies have shown, quasicrystals can have topological properties inherited from the parent crystals. These properties are discussed here for the simplest of quasicrystals, the 1D Fibonacci chain. The Fibonacci noninteracting tight-binding Hamiltonians are characterized by multifractality of spectrum and states, which is manifested in many of its physical properties, notably in transport. Perturbations due to disorder and re-entrance phenomena are described, along with the crossover to strong Anderson localization. Perturbations due to boundary conditions also give information on the spatial and topological electronic properties, as is shown for the superconducting proximity effect. Related models including phonon and mixed Fibonacci models are discussed, as well as generalizations to other quasiperiodic chains and higher dimensional extensions. Interacting quasiperiodic systems and the case for many body localization are briefly discussed. Some experimental realizations of the 1D quasicrystal and their potential applications are described.
description: Revised reformatted version with new figures (48 pages, 45 figures) to be published in Reviews of Modern Physics
Reduced Deadtime and Higher Rate Photon-Counting Detection using a Multiplexed Detector Array
Creators: name: Castelletto, S.
name: Degiovanni, I. P.
name: Schettini, V.
name: Migdall, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the effects of detector deadtime. The method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct input light to live detectors. Our calculations and models highlight the advantages of the technique. In particular, using this scheme, a group of N detectors provides an improvement in operation rate that can exceed the improvement that would be obtained by a single detector with deadtime reduced by 1/N, even if it were feasible to produce a single detector with such a large improvement in deadtime. We model the system for continuous and pulsed light sources, both of which are important for quantum metrology and quantum key distribution applications.
description: 6 figures
Bittlinger, Arnold: Das Abendmahl im Neuen Testament und in der frühen Kirche
Creators: name: Schmidt-Lauber, Hans-Christoph
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 20 Nr. 3 (1971): Ökumenische Rundschau, Band 20, Heft 3
Asymmetry, Risk, and Correlation Dynamics in the U.S. Fiber Market
Creators: name: Fadiga, Mohamadou L.
name: Misra, Sukant K.
name: Fadiga, Mohamadou L.
name: Misra, Sukant K.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Risk and Uncertainty
subject: Cotton
subject: volatility
subject: asymmetry
subject: multivariate conditional correlations
subject: optimal

description: This study looked at the dynamics of conditional correlations and hedging strategies in the US main cotton producing regions. A two-step procedure was utilized to model, estimate, and analyze volatility, conditional correlations, and the optimal hedge ratios using spot prices in the Delta, Southeast, Southern Plains, and the Southwest regions and the New York commodity exchanges December futures contracts. The results indicate that volatilities in most of the regions are asymmetric and persistent. The derived conditional correlations and the optimal hedging ratios are dynamic although they do not have unit root. Moreover, the changes in agricultural policies altered the dynamics of correlations and producers' hedging strategies in the Delta, Southeast, and Southern Plains regions.
The Impact of Energy Feedback on Quasar Evolution and Black Hole Demographics
Creators: name: Vittorini, V.
name: Shankar, F.
name: Cavaliere, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate how accretion episodes onto massive black holes power quasars and AGN while they accumulate mass into the holes. We compute both the trend and the stochastic component to the trigger of the accretion events, as provided by structure buildup after the hierarchical paradigm. We base on host galaxy evolution proceeding from the protogalactic era at redshifts z > 2.5 dominated by major merging events in high density regions, to the subsequent era marked by galaxy-galaxy interactions in newly forming groups. These dynamical events perturb the gravitational equilibrium of the gas reservoir in the hosts, and trigger recurrent accretion episodes controlled by energy feedback from the very source emission onto the surrounding gas. Depletion of the latter by these events (adding to quiescent star formation) concurs with the slowing down of the clustering to cause a fast drop of the activity in dense regions. Meanwhile, in the "field" later and rarer events are triggered by interactions of still gas-rich galaxies, and eventually by captures of dwarf satellite galaxies; these are also included in our analytic model. Thus we compute the quasar and AGN luminosity functions; we find these to brighten and rise from z ~ 6 to z ~ 2.5, and then toward z ~ 0 to dim and fall somewhat, in detailed agreement with the observations. We predict that for z < 2.5 the mass distribution of the holes progressively rises and shifts rightwards; we compare our results with the local data. We also find that downward of z ~ 2.5 the Eddington ratios related to emitting, most massive holes drift below unity on average, with a widening scatter; meanwhile, some smaller holes flare up closer to the Eddington limit.
description: 15 pages + 7 figures; accepted on MNRAS
Energy budget and the gravitational wave spectra beyond the bag model
Creators: name: Wang, Xiao
name: Huang, Fa Peng
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The energy budget of cosmological first-order phase transition is essential for the gravitational wave spectra. Most of the previous studies are based on the bag model with same sound velocity in the symmetric and broken phase. We study the energy budget and the corresponding gravitational wave spectra beyond the bag model, where the sound velocities could be different in the symmetric and broken phase. Taking the Higgs sextic effective model as a representative model, we calculate the sound velocities in different phase, the gravitational wave spectra and the signal-to-noise ratio for different combinations of phase transition parameters beyond the bag model. We compare these new results with the ones obtained from the bag model.The proper sound velocities and phase transition parameters at the appropriate temperature are important to obtain more precise predictions.
description: Published version in Physical Review D, 31 pages, 8 figures, 3 tables
Forming merging double compact objects with stable mass transfer
Creators: name: Picco, Annachiara
name: Marchant, Pablo
name: Sana, Hugues
name: Nelemans, Gijs
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Merging double compact objects (CO) represent the inferred sources of every detected gravitational wave (GW) signal, thus modeling their progenitors is important to constrain stellar evolution theory. Stable mass transfer (MT) between a donor star and a black hole is one of the proposed tightening mechanisms to form binary black holes merging within the age of the universe. We aim to assess the potential of stable non conservative mass transfer to produce the pairings of COs: black holes (BHs), neutron stars (NSs) and white dwarfs (WDs). We study the conditions required for mass transfer between a star and a CO to be stable and to lead to merging binary COs. We use published results for the response of the stellar radii to rapid mass loss; coupled with analytical models for orbital evolution, we determine the boundary for unstable MT and the post interaction properties of binaries undergoing stable MT. We investigate the impact of angular momentum loss prescription in the hardening by accounting for isotropic re emission from the accretor vicinity and mass outflow from the Lagrangian point L2. Stable MT in systems with a CO + Roche lobe filling star, in the limit of isotropic re-emission, is shown to be able to form any pair of merging COs apart from WD + BH. Considering mass outflow from L2, the resulting parameter space for GW progenitors is shifted towards smaller initial mass ratios, ruling out the formation of NS + NS while allowing the production of merging WD + BH pairs. We compare our results with single-degenerate binaries and find that conditions for stable MT to operate are present in nature. We show that stable MT in the isotropic re-emission limit can produce merging binary BHs with mass ratios consistent with the majority of inferred sources of the third Gravitational Wave Transient Catalogue. Angular momentum loss from L2 lifts the achievable final mass ratio.
description: 18 pages, 17 figures
Production and Evolution of Perturbations of Sterile Neutrino Dark Matter
Creators: name: Abazajian, Kevork
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Sterile neutrinos, fermions with no standard model couplings [SU(2) singlets], are predicted by most extensions of the standard model, and may be the dark matter. I describe the nonthermal production and linear perturbation evolution in the early universe of this dark matter candidate. I calculate production of sterile neutrino dark matter including effects of Friedmann dynamics dictated by the quark-hadron transition and particle population, the alteration of finite temperature effective mass of active neutrinos due to the presence of thermal leptons, and heating of the coupled species due to the disappearance of degrees of freedom in the plasma. These effects leave the sterile neutrinos with a non-trivial momentum distribution. I also calculate the evolution of sterile neutrino density perturbations in the early universe through the linear regime and provide a fitting function form for the transfer function describing the suppression of small scale fluctuations for this warm dark matter candidate. The results presented here differ quantitatively from previous work due to the inclusion here of the relevant physical effects during the production epoch.
description: v4: matches version in Phys. Rev. D
Fractonic topological phases from coupled wires
Creators: name: Sullivan, Joseph
name: Dua, Arpit
name: Cheng, Meng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In three dimensions, gapped phases can support "fractonic" quasiparticle excitations, which are either completely immobile or can only move within a low-dimensional submanifold, a peculiar topological phenomenon going beyond the conventional framework of topological quantum field theory. In this work we explore fractonic topological phases using three-dimensional coupled wire constructions, which have proven to be a successful tool to realize and characterize topological phases in two dimensions. We find that both gapped and gapless phases with fractonic excitations can emerge from the models. In the gapped case, we argue that fractonic excitations are mobile along the wire direction, but their mobility in the transverse plane is generally reduced. We show that the excitations in general have infinite-order fusion structure, distinct from previously known gapped fracton models. Like the 2D coupled wire constructions, many models exhibit gapless (or even chiral) surface states, which can be described by infinite-component Luttinger liquids. However, the universality class of the surface theory strongly depends on the surface orientation, thus revealing a new type of bulk-boundary correspondence unique to fracton phases.
description: 11+12 pages, 7 figures. (v2) Updated with additional references. v(3) Updated with journal format
Compositions
Creators: name: Bloomfield, Owen Dennis
Publisher: name: University of British Columbia
Year: 2009

description: This paper is a collection of five musical works written between the years 1998 and 2000. A variety of genres are represented which include large and small chamber groups, the orchestra, solo piano and an experimental interdisciplinary theatre piece. Nectar of the Gods is an abstractly programatic work about mental illness, primarily bipolar disorder. It contrasts both linear structures with vertical ones. Borealis is constructed from a single melodic line. It is slightly programatic as well in a depiction of the Northern Canadian boreal forests. Only certain forces of the orchestra are used such as the clarinets, flutes, vibraphone and the string section. Love Song is a small work for two sopranos and harp. Like with Borealis, it is constructed from two melodic lines, one for the harp and another for the voices. The lines here are used heterophonically and disguise the originals. The text is by Cathy Richards and the work is dedicated to my wife Trisha Unwin. Piano Piece uses a South Indian reductive form as its basis. While the length of the overall musical sections remain the same, the events within the sections become shorter resulting in a formal acceleration. Variations on Gestalt is a work for the theatre. The music is an integral part of the action and was written with an extremely loose form. This facilitates a fluid change that may be needed in different productions. The musicians are used as actors themselves along with the main character and the dancer.
Skowronek, Alfons: Sakrament in der evangelischen Theologie der Gegenwart
Creators: name: Valeske, Ulrich
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 20 Nr. 3 (1971): Ökumenische Rundschau, Band 20, Heft 3
Mesoptychia heterocolpos var. arctica L. Soderstr. et Vana, Phytotaxa
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Jungermanniaceae
Mesoptychia
Mesoptychia heterocolpos
Mesoptychia heterocolpos var. arctica (s.w.arnell) l.söderstr. et váňa,

description: Mesoptychia heterocolpos var. arctica (S.W.Arnell) L.Söderstr. et Váňa,
Phytotaxa 65: 53, 2012 (see Váňa et al. 2012e). BASIONYM: Leiocolea arctica S.W.Arnell, Svensk Bot. Tidskr. 44 (2): 374, 1950 (see Arnell 1950).
NOTE: This variety also creates the autonym.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 71, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
HAZARDS OF EXPROPRIATION:TENURE INSECURITY AND INVESTMENT IN RURAL CHINA
Creators: name: Jacoby, Hanan G.
name: Li, Guo
name: Rozelle, Scott
name: Jacoby, Hanan G.
name: Li, Guo
name: Rozelle, Scott
Publisher: name: Unknown
Year: 2002
Subjects: Land Economics/Use

description: This paper uses household data from Northeast China to examine the link between investment and land tenure insecurity induced by China's system of village-level land reallocation. We quantify expropriation risk using a hazard analysis of individual plot tenures and incorporate the predicted "hazards of expropriation" into an empirical analysis of plot-level investment. Our focus is on organic fertilizer use, which has long lasting benefits for soil quality. Although we find that higher expropriation risk significantly reduces application of organic fertilizer, a welfare analysis shows that guaranteeing land tenure in this part of China would yield only minimal efficiency gains.
EHT tests of the strong-field regime of General Relativity
Creators: name: Völkel, Sebastian H.
name: Barausse, Enrico
name: Franchini, Nicola
name: Broderick, Avery E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following up on a recent analysis by Psaltis et al. [Phys. Rev. Lett. 125, 141104 (2020)], we show that the observed shadow size of M87$^*$ can be used to unambiguously and robustly constrain the black hole geometry in the vicinity of the circular photon orbit. Constraints on the post-Newtonian weak-field expansion of the black hole's metric are instead more subtle to obtain and interpret, as they rely on combining the shadow-size measurement with suitable theoretical priors. We provide examples showing that post-Newtonian constraints resulting from shadow-size measurements should be handled with extreme care. We also discuss the similarities and complementarity between the EHT shadow measurements and black-hole gravitational quasi-normal modes.
description: Published as letter in Classical and Quantum Gravity, 8 pages, 3 figures
Development of superconducting correlation at low temperatures in the two-dimensional t-J model
Creators: name: Koretsune, Takashi
name: Ogata, Masao
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The equal-time pairing correlation function of the two-dimensional t-J model on a square lattice is studied using a high-temperature expansion method. The sum of the pairing correlation, its spatial dependence, and the correlation length are obtained as functions of temperature down to $T \simeq 0.2 t$. By comparison of single-particle contributions in the correlation functions, we find an effective attractive interaction between quasi-particles in $d_{x^2-y^2}$-wave pairings. It is shown that d-wave correlation grows rapidly at low temperatures for 0.5 < n < 0.9, with n being the electron density. The temperature for this growth is roughly scaled by J/2. This is in sharp contrast to the Hubbard model in a weak or intermediate coupling region, where there is no numerical evidence of superconductivity.
description: 4 pages, 5 figures
Low-energy flavour probes of light vector bosons
Creators: name: Di Luzio, Luca
name: Levati, Gabriele
name: Paradisi, Paride
name: Díaz, Xavier Ponce
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work, we construct the chiral Lagrangian for a light spin-1 boson $X$ possessing both vectorial and axial couplings to the light Standard Model quarks $u, d, s$. We then use it in order to describe the tree-level, model-independent contributions to the $ΔS = 1$ transition $K^\pm \rightarrow π^\pm X$, which is induced by Standard Model charged currents and is possibly enhanced by the emission of a longitudinally polarized $X$ boson. Such a flavour observable is then shown to set the best model-independent bounds on the diagonal axial couplings of $X$ to light quarks in the mass range allowed by the decay kinematics, improving the currently available constraints from beam-dump experiments and collider searches.
description: 8 pages, 2 figures, Proceedings to "Les Rencontres de Physique de la Vall\'ee d'Aoste" (March 5-11, 2023, La Thuile)
HOW ELASTIC IS CALORIE DEMAND? PARAMETRIC, NONPARAMETRIC, AND SEMIPARAMETRIC RESULTS FOR URBAN PAPUA NEW GUINEA
Creators: name: Gibson, John
name: Rozelle, Scott
name: Gibson, John
name: Rozelle, Scott
Publisher: name: Unknown
Year: 2000
Subjects: Food Consumption/Nutrition/Food Safety

description: This paper seeks further evidence on the elasticity of calorie demand with respect to household resources. The case presented is for urban areas of Papua New Guinea, where just over one-half of the population appear to obtain less than the recommended amount of dietary energy. The relationship between per capita calorie consumption and per capita expenditure in urban areas of Papua New Guinea is not consistent with the view that income changes have negligible effects on nutrient intakes. The unconditional calorie demand elasticity is approximately 0.6 for the poorest half of the population, most of whom have less than the recommended 2000 calories per day available to them. Using parametric and semiparametric estimation to control for a wide range of other influences on calorie consumption does not materially reduce the size of the elasticity. Therefore, these results are not supportive of "growth-pessimism" and instead suggest that policies that increase urban household incomes will also act to reduce undernutrition.
Mesoptychia heterocolpos var. harpanthoides L. Soderstr. et Vana, Phytotaxa
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Jungermanniaceae
Mesoptychia
Mesoptychia heterocolpos
Mesoptychia heterocolpos var. harpanthoides (bryhn et kaal.) l.söderstr. et váňa,

description: Mesoptychia heterocolpos var. harpanthoides (Bryhn et Kaal.) L.Söderstr. et Váňa,
Phytotaxa 65: 53, 2012 (see Váňa et al. 2012e). BASIONYM: Lophozia harpanthoides Bryhn et Kaal., Rep. Second Norweg. Arctic Exped. 11: 33, 1906 (see Bryhn 1906).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 71, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
[Brev til DKNVS]
Creators: name: Trampe, Frederik Christoffer
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1812

description: Trampe skriver til VS om Ole Helgesen som ønsker å bryte grødsten i nærheten av Kristianstens festning, Trondheim. Brev fra Trampe og brev fra Helgesen ligger sammen.
The particular as universal, the real as ideal; the dream of civil society in a cross-cultural perspective
Creators: name: Bayatrizi, Zohreh
Publisher: name: University of British Columbia
Year: 2009

description: For many centuries the dream of civil society has projected what many societies have imagined as their ideal form of social and political life. It has also reflected the real social, economic, and political organisation of life in those societies. In an attempt to explore both of these aspects of the dream of civil society, this work brings together an etymological study of the concept of civil society, a historical analysis of the conditions of its emergence in eighteenth-century Western Europe, and a comparative analysis of its revival in contemporary Iran: as a source of hope and inspiration as well as an indication of changes in the ways in which people relate to each other, to their institutions, and to their history and traditions. The etymological study of the concept of civil society explores how dreams and realities have constantly shaped the meaning of the concept of civil society in several languages, including Greek, later German, English, and Persian. The more detailed studies of the conceptual formation and institutional organisation of civil society in eighteenth-century Western Europe and in contemporary Iran are designed to give a comparative perspective on how a conjuncture of transformations in worldviews, in social and political institutions, and in the configuration of classes can provide for the emergence of a particular concept and practice of civil society that reflect all of these transformations.
Experimental evidence of s-wave superconductivity in bulk CaC$_{6}$
Creators: name: Lamura, G.
name: Aurino, M.
name: Cifariello, G.
name: Di Gennaro, E.
name: Andreone, A.
name: Emery, N.
name: Herold, C.
name: Mareche, J. -F.
name: Lagrange, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The temperature dependence of the in-plane magnetic penetration depth, $λ_{ab}(T)$, has been measured in a c-axis oriented polycrystalline CaC$_{6}$ bulk sample using a high-resolution mutual inductance technique. A clear exponential behavior of $λ_{ab}(T)$ has been observed at low temperatures, strongly suggesting isotropic s-wave pairing. Data fit using the standard BCS theory yields $λ_{ab}(0)=(720\pm 80)$ Angstroem and $Δ(0)=(1.79\pm 0.08)$ meV. The ratio $2Δ(0)/k_{_B}T_{c}=(3.6\pm 0.2)$ gives indication for a conventional weakly coupled superconductor.
description: To appear in Phys. Rev. Lett
New Instances of Quadratic APN Functions
Creators: name: Beierle, Christof
name: Leander, Gregor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In a recent work, Beierle, Brinkmann and Leander presented a recursive tree search for finding APN permutations with linear self-equivalences in small dimensions. In this paper, we describe how this search can be adapted to find many new instances of quadratic APN functions. In particular, we found 12,921 new quadratic APN functions in dimension eight, 35 new quadratic APN functions in dimension nine and five new quadratic APN functions in dimension ten up to CCZ-equivalence. Remarkably, two of the 35 new APN functions in dimension nine are APN permutations. Among the 8-bit APN functions, there are three extended Walsh spectra that do not correspond to any of the previously-known quadratic 8-bit APN functions and, surprisingly, there exist at least four CCZ-inequivalent 8-bit APN functions with linearity $2^7$, i.e., the highest possible non-trivial linearity for quadratic functions in dimension eight.
description: 18 pages. This is the version accepted to IEEE Transactions on Information Theory
Room temperature spin coherence in ZnO
Creators: name: Ghosh, S.
name: Sih, V.
name: Lau, W. H.
name: Awschalom, D. D.
name: Bae, S. -Y.
name: Wang, S.
name: Vaidya, S.
name: Chapline, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Time-resolved optical techniques are used to explore electron spin dynamics in bulk and epilayer samples of n-type ZnO as a function of temperature and magnetic field. The bulk sample yields a spin coherence time T2* of 20 ns at T = 30 K. Epilayer samples, grown by pulsed laser deposition, show a maximum T2* of 2 ns at T = 10 K, with spin precession persisting up to T = 280 K.
description: 3 pages, 3 figures
On correlation functions in models related to the Temperley-Lieb algebra
Creators: name: Fukai, Kohei
name: Kleinemühl, Raphael
name: Pozsgay, Balázs
name: Vernier, Eric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We deal with quantum spin chains whose Hamiltonian arises from a representation of the Temperley-Lieb algebra, and we consider the mean values of those local operators which are generated by the Temperley-Lieb algebra. We present two key conjectures which relate these mean values to existing literature about factorized correlation functions in the XXZ spin chain. The first conjecture states that the finite volume mean values of the current and generalized current operators are given by the same simple formulas as in the case of the XXZ chain. The second conjecture states that the mean values of products of Temperley-Lieb generators can be factorized: they can expressed as sums of products of current mean values, such that the coefficients in the factorization depend neither on the eigenstate in question, nor on the selected representation of the algebra. The coefficients can be extracted from existing work on factorized correlation functions in the XXZ model. The conjectures should hold for all eigenstates that are non-degenerate with respect to the local charges of the models. We consider concrete representations, where we check the conjectures: the so-called golden chain, the $Q$-state Potts model, and the trace representation. We also explain how to derive the generalized current operators from concrete expressions for the local charges.
description: 32 pages, v2: references added, and a minor addition in Sec. 5.2, v3: one references and some additional explanations added
TRADE REMEDY LAWS AND NAFTA AGRICULTURAL TRADE
Creators: name: Gunning-Trant, Caroline
name: Carter, Colin A.
name: Gunning-Trant, Caroline
name: Carter, Colin A.
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: Trade remedy law is viewed as a major vehicle for protection in U.S. agriculture. The objective of this paper is to summarize the use of trade remedy law by U.S. agriculture and to highlight examples of where the use of these laws conflicts with free trade agreements such as NAFTA. Empirical evidence is presented of the effects of U.S. trade remedy laws on agricultural imports. We find evidence that is consistent with trade diversion on positive rulings and an "investigation effect" on negative rulings.
title: Η συρρίκνωση των δαπανών υγείας στην Ελλάδα κατά την περίοδο της κρίσης: η περίπτωση του Πανεπιστημιακού Γενικού Νοσοκομείου «Αττικόν»
title: The contraction in health expenditure in Greece during the crisis period: the case of the University General Hospital "Attikon"
titleType: AlternativeTitle
Creators: name: Χρουσή, Ευτυχία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Οικονομικές κρίσεις
Πρόγραμμα δημοσιονομικής προσαρμογής
Δημόσιες δαπάνες υγείας
Δημόσιες δαπάνες
Διαρθρωτικές μεταρρυθμίσεις
Συρρίκνωση δαπανών
Προϋπολογισμός

description: Η Ελλάδα κατά το έτος 2009, υπέστη μια από τις σοβαρότερες κρίσεις χρέους στην ιστορία της και αναγκάστηκε το 2010 να υπογράψει Πρόγραμμα Δημοσιονομικής Προσαρμογής με το Διεθνές Νομισματικό Ταμείο (ΔΝΤ), την Ευρωπαϊκή Επιτροπή και την Ευρωπαϊκή Κεντρική Τράπεζα (ΕΚΤ) με σκοπό την δανειοδότησή της. Το πρόγραμμα χρηματοδότησης ή διάσωσης απαιτούσε την υλοποίηση μιας σειράς μέτρων δημοσιονομικού χαρακτήρα. Σκοπός των μέτρων ήταν η μείωση των δημοσίων δαπανών μέσω διαρθρωτικών μεταρρυθμίσεων στον δημόσιο τομέα. Η παρούσα έρευνα είχε στόχο να διερευνήσει την συρρίκνωση των δαπανών υγείας στην Ελλάδα κατά την περίοδο της κρίσης εστιάζοντας στην περίπτωση του Πανεπιστημιακού Γενικού Νοσοκομείου «Αττικόν». Διεξήχθη πρωτογενής ποσοτική έρευνα σε 86 άτομα που κατέχουν θέση ευθύνης στη Νοσηλευτική Υπηρεσία του Νοσοκομείου. Η επιλογή του συγκεκριμένου δείγματος πραγματοποιήθηκε προκειμένου να συνδυαστεί η μείωση του Προϋπολογισμού με την αποτελεσματικότητα του Νοσοκομείου και να αναδειχτεί η σπουδαιότητα της έρευνας. Η επεξεργασία των στοιχείων πραγματοποιήθηκε μέσω του προγράμματος SPSS. Σύμφωνα με τα αποτελέσματα της έρευνας οι γυναίκες, ηλικίας από 56 έως 67 ετών, που εργάζονται σε θέση ευθύνης στο ΠΓΝ Αττικόν πάνω από 16 έτη και που δεν έχουν υπηρετήσει σε θέση ευθύνης σε άλλο νοσοκομείο υποστηρίζουν σε υψηλότερο βαθμό πως η κυβέρνηση πρέπει να προχωρήσει άμεσα στην πρόσληψη μόνιμου προσωπικού για την βελτίωση της αποδοτικότητας του νοσοκομείου. Ακόμη, οι κάτοχοι μεταπτυχιακού ή διδακτορικού τίτλου συμφωνούν περισσότερο με τη μείωση του προϋπολογισμού και πως υπήρξαν περιπτώσεις που δεν διέθεταν τα απαραίτητα υλικά λόγω έλλειψης τους. Παρατηρήθηκε επίσης πως οι απόφοιτοι δευτεροβάθμιας ή τριτοβάθμιας εκπαίδευσης και όσοι δεν έχουν υπηρετήσει σε θέση ευθύνης σε άλλο νοσοκομείο παρουσιάζουν υψηλότερου βαθμού ικανοποίηση από την αποδοτικότητα των παρεχόμενων υπηρεσιών υγείας που προσφέρει το νοσοκομείο ΠΓΝ Αττικόν. Τέλος, έγινε σαφές πως όσο περισσότερο συμφωνούν οι ερωτηθέντες με τη μείωση που πραγματοποιήθηκε στους προϋπολογισμούς των νοσοκομείων, τόσο πιο σύμφωνοι είναι πως υπήρξαν περιπτώσεις όπου ζητήθηκε από τον ασθενή να αγοράσει υλικά λόγω έλλειψης τους και πως υπήρξαν εξυβρίσεις-καταγγελίες ασθενών λόγω της έλλειψης αυτής.
Cosmic rays, lithium abundance and excess entropy in galaxy clusters
Creators: name: Nath, Biman B.
name: Madau, Piero
name: Silk, Joseph
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the production of $^6$Li in spallation reactions by cosmic rays in order to explain the observed abundance in halo metal-poor stars. We show that heating of ambient gas by cosmic rays is an inevitable consequence of this process, and estimate the energy input required to reproduce the observed abundance of $^6$Li/H$\sim 10^{-11}$ to be of order a few hundred eV per particle. We draw attention to the possibility that this could explain the excess entropy in gas in galaxy groups and clusters. The evolution of $^6$Li and the accompanying heating of gas is calculated for structures collapsing at the present epoch with injection of cosmic rays at high redshift. We determine the energy required to explain the abundance of $^6$Li at $z \sim 2$ corresponding to the formation epoch of halo metal-poor stars, and also an increased entropy level of $\sim 300$ keV cm$^2$ necessary to explain X-ray observations of clusters. The energy budget for this process is consistent with the expected energy output of radio-loud AGNs, and the diffusion length scale of cosmic-ray protons responsible for heating is comparable to the size of regions with excess entropy. We also discuss the constraints imposed by the extragalactic gamma-ray background.
description: 5 pages, 1 Figure, Accepted for publication in MNRAS (Letters)
Quantum toroidal algebras and solvable structures in gauge/string theory
Creators: name: Matsuo, Yutaka
name: Nawata, Satoshi
name: Noshita, Go
name: Zhu, Rui-Dong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This is a review article on the quantum toroidal algebras, focusing on their roles in various solvable structures of 2d conformal field theory, supersymmetric gauge theory, and string theory. Using $\mathcal{W}$-algebras as our starting point, we elucidate the interconnection of affine Yangians, quantum toroidal algebras, and double affine Hecke algebras.
 Our exploration delves into the representation theory of the quantum toroidal algebra of $\mathfrak{gl}_1$ in full detail, highlighting its connections to partitions, $\mathcal{W}$-algebras, Macdonald functions, and the notion of intertwiners. Further, we also discuss integrable models constructed on Fock spaces and associated $\mathcal{R}$-matrices, both for the affine Yangian and the quantum toroidal algebra of $\mathfrak{gl}_1$.
 The article then demonstrates how quantum toroidal algebras serve as a unifying algebraic framework that bridges different areas in physics. Notably, we cover topological string theory and supersymmetric gauge theories with eight supercharges, incorporating the AGT duality. Drawing upon the representation theory of the quantum toroidal algebra of $\mathfrak{gl}_1$, we provide a rather detailed review of its role in the algebraic formulations of topological vertex and $qq$-characters. Additionally, we briefly touch upon the corner vertex operator algebras and quiver quantum toroidal algebras.
description: 151+42 pages, Comments are welcome, v2: fixed typos and added references
A weighted de Rham operator acting on arbitrary tensor fields and their local potentials
Creators: name: Edgar, S. Brian
name: Senovilla, José M. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 58xxx, 53xxx

description: We introduce a weighted de Rham operator which acts on arbitrary tensor fields by considering their structure as r-fold forms. We can thereby define associated superpotentials for all tensor fields in all dimensions and, from any of these superpotentials, we deduce in a straightforward and natural manner the existence of 2r potentials for any tensor field, where r is its form-structure number. By specialising this result to symmetric double forms, we are able to obtain a pair of potentials for the Riemann tensor, and a single (2,3)-form potential for the Weyl tensor due to its tracelessness. This latter potential is the n-dimensional version of the double dual of the classical four dimensional (2,1)-form Lanczos potential. We also introduce a new concept of harmonic tensor fields, demonstrate that the new weighted de Rham operator has many other desirable properties and, in particular, it is the natural operator to use in the Laplace-like equation for the Riemann tensor.
description: 33 pages: corrected typos and minor additions; reference [39] added
A novel smoothed particle hydrodynamics and finite element coupling scheme for fluid-structure interaction: the sliding boundary particle approach
Creators: name: Fuchs, Sebastian L.
name: Meier, Christoph
name: Wall, Wolfgang A.
name: Cyron, Christian J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: A novel numerical formulation for solving fluid-structure interaction (FSI) problems is proposed where the fluid field is spatially discretized using smoothed particle hydrodynamics (SPH) and the structural field using the finite element method (FEM). As compared to fully mesh- or grid-based FSI frameworks, due to the Lagrangian nature of SPH this framework can be easily extended to account for more complex fluids consisting of multiple phases and dynamic phase transitions. Moreover, this approach facilitates the handling of large deformations of the fluid domain respectively the fluid-structure interface without additional methodological and computational efforts. In particular, to achieve an accurate representation of interaction forces between fluid particles and structural elements also for strongly curved interface geometries, the novel sliding boundary particle approach is proposed to ensure full support of SPH particles close to the interface. The coupling of the fluid and the structural field is based on a Dirichlet-Neumann partitioned approach, where the fluid field is the Dirichlet partition with prescribed interface displacements and the structural field is the Neumann partition subject to interface forces. To overcome instabilities inherent to weakly coupled schemes an iterative fixed-point coupling scheme is employed. Several numerical examples in form of well-known benchmark tests are considered to validate the accuracy, stability, and robustness of the proposed formulation. Finally, the filling process of a highly flexible thin-walled balloon-like container is studied, representing a model problem close to potential application scenarios of the proposed scheme in the field of biomechanics.
Muon reconstruction and identification efficiency in ATLAS using the full Run 2 $pp$ collision data set at $\sqrt{s}=13$ TeV
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This article documents the muon reconstruction and identification efficiency obtained by the ATLAS experiment for 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV collected between 2015 and 2018 during Run 2 of the LHC. The increased instantaneous luminosity delivered by the LHC over this period required a reoptimisation of the criteria for the identification of prompt muons. Improved and newly developed algorithms were deployed to preserve high muon identification efficiency with a low misidentification rate and good momentum resolution. The availability of large samples of $Z\toμμ$ and $J/ψ\toμμ$ decays, and the minimisation of systematic uncertainties, allows the efficiencies of criteria for muon identification, primary vertex association, and isolation to be measured with an accuracy at the per-mille level in the bulk of the phase space, and up to the percent level in complex kinematic configurations. Excellent performance is achieved over a range of transverse momenta from 3 GeV to several hundred GeV, and across the full muon detector acceptance of $|η|<2.7$.
description: 64 pages in total, author list starting page 42, auxiliary material starting at page 59, 34 figures, 3 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/MUON-2018-03/
[Brev til DKNVS]
Creators: name: VS
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1812

description: Se kopibok s. 16, pkt 29 (12/5 1812). Polydoc nr. 1: 1138. Polydoc nr. 2: 536.
Mesoptychia holmeniana L. Soderstr. et Vana, Phytotaxa
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Jungermanniaceae
Mesoptychia
Mesoptychia holmeniana

description: Mesoptychia holmeniana (Inoue et Steere) L.Söderstr. et Váňa,
Phytotaxa 65: 53, 2012 (see Váňa et al. 2012e). BASIONYM: Lophozia holmeniana Inoue et Steere, J. Hattori Bot. Lab. 44: 285, 1978 “ holmenianum ” (see Steere & Inoue 1978).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 71, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Higher-order interactions induce anomalous transitions to synchrony
Creators: name: León, Iván
name: Muolo, Riccardo
name: Hata, Shigefumi
name: Nakao, Hiroya
Publisher: name: arXiv
Year: 2023
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We analyze the simplest model of identical coupled phase oscillators subject to two-body and three-body interactions with permutation symmetry. This model is derived from an ensemble of weakly coupled nonlinear oscillators by phase reduction. Our study indicates that higher-order interactions induce anomalous transitions to synchrony. Unlike the conventional Kuramoto model, higher-order interactions lead to anomalous phenomena such as multistability of full synchronization, incoherent, and two-cluster states, and transitions to synchrony through slow switching and clustering. Phase diagrams of the dynamical regimes are constructed theoretically and verified by direct numerical simulations. We also show that similar transition scenarios are observed even if a small heterogeneity in the oscillators' frequency is included.
Higher Spin Conformal Currents in Minkowski Space
Creators: name: Gelfond, O. A.
name: Skvortsov, E. D.
name: Vasiliev, M. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using unfolded formulation of free equations for massless fields of all spins we obtain explicit form of higher-spin conformal conserved charges bilinear in 4d massless fields of arbitrary spins.
description: LaTeX, 10 pages. Corrected typos
Avances en la Evaluación de la Producción de Pasto y Bellota en la Dehesa mediante Sensores Próximos y Remotos
Creators: name: Giráldez, Pedro J. Gómez
name: Muñoz, María Dolores Carbonero
name: Andreu, Ana
name: Carpintero, Elisabet
name: Dugo, María P. González
Publisher: name: Zenodo
Year: 2021

description: Esta publicación describe una serie de avances que se han realizado en IFAPA para integrar información procedentes de sensores remotos en la gestión del pastoreo extensivo en los sistemas de dehesa. Para ello, se combinan los datos proporcionados por estos sensores, fundamentalmente a bordo de satélites y aviones, con medidas precisas de campo y modelos. Esta integración permite realizar un seguimiento preciso, regular y con abjo coste del estado de las cubiertas vegetales de la dehesa, cuantificándolas y estimando su desarrollo fenológico, y de sus producciones, en concreto la producción y calidad del pasto y la producción de bellota, principales alimentos del ganado en la dehesa.
Weißbach, Jürgen: Der neue Mensch im theologischen Denken John Wesleys
Creators: name: Schaller, Emil
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 20 Nr. 3 (1971): Ökumenische Rundschau, Band 20, Heft 3