cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detection of CH$^{+}$, CH and H$_2$ molecules in the Young Planetary Nebula IC 4997
Creators: name: Rao, N. Kameswara
name: Lambert, David L.
name: Reddy, Arumalla B. S.
name: García-Hernández, D. A.
name: Manchado, Arturo
name: Díaz-Luis, J. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have detected CH$^{+}$ and CH molecular absorption lines from the young compact planetary nebula IC 4997 from high resolution optical spectra. A high-resolution infra-red (H and K bands) spectrum provides detection of H$_2$ emission lines amongst many other lines. The H$_2$ lines provide an excitation temperature of 2100 K which may result from UV fluorescence in the envelope or from shocks formed at the interface between an expanding outflow of ionized gas and the neutral envelope ejected when the star was on the AGB. It is suggested that the CH$^+$ may result from the endothermic reaction C + H$_2$ $\rightarrow$ CH$^+$ + H. Intriguingly, CH$^{+}$ and also CH show a higher expansion velocity than H$_{\rm 2}$ emission suggesting they may be part of the post-shocked gas.
description: 12 pages, 2 tables, 6 figures, accepted for publication in Publications of the Astronomical Society of the Pacific (PASP)
On detecting terrestrial planets with timing of giant planet transits
Creators: name: Agol, E.
name: Steffen, J.
name: Sari, R.
name: Clarkson, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The transits of a planet on a Keplerian orbit occur at time intervals exactly equal to the period of the orbit. If a second planet is introduced the orbit is not Keplerian and the transits are no longer exactly periodic. We compute the magnitude of these variations in the timing of the transits, dt. We investigate analytically several limiting cases: (i) interior perturbing planets with much smaller periods; (ii) exterior perturbing planets on eccentric orbits with much larger periods; (iii) both planets on circular orbits with arbitrary period ratio but not in resonance; and (iv) planets on initially circular orbits locked in resonance. Case (iv) is perhaps the most interesting case since some systems are known to be in resonances and the perturbations are the largest. As long as the perturber is more massive than the transiting planet, the timing variations would be of order of the period regardless of the perturber mass! For lighter perturbers, we show that the timing variations are smaller than the period by the perturber to transiting planet mass ratio. An earth mass planet in 2:1 resonance with a 3-day period transiting planet (e.g. HD 209458b) would cause timing variations of order 3 minutes, which would be accumulated over a year. These are easily detectable with current ground-based measurements. For the case of both planets on eccentric orbits, we compute numerically the transit timing variations for several cases of known multiplanet systems assuming they were edge-on. Transit timing measurements may be used to constrain the masses and radii of the planetary system and, when combined with radial velocity measurements, to break the degeneracy between mass and radius of the host star. (abstract truncated)
description: 21 pages, 9 figures, submitted to MNRAS
AN ANALYSIS OF POLICY CHANGES IN THE CANADIAN FEED GRAIN MARKET
Creators: name: Hickson, A.B.
name: Carter, Colin A.
name: Hickson, A.B.
name: Carter, Colin A.
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy

description: This paper examines changes in the welfare of Canadian barley and livestock producers attributable to a substantial alteration of Canadian domestic feed grain policy in 1974. Three welfare effects are determined - institutional, destabilization, and risk response. Generally, the analytical results confirmed initial hypotheses, with the exclusion of a positive relationship between price risk and barley production on the Prairies. This positive relationship, theorized to result from the risk reduction effect of yearly stabilized Canadian Wheat Board initial prices, enhanced the welfare benefits of the policy change.
SIMULTANEOUS INPUT DEMANDS AND LAND ALLOCATION IN AGRICULTURAL PRODUCTION UNDER CERTAINTY
Creators: name: Babcock, Bruce A.
name: Chalfant, James A.
name: Collender, Robert N.
name: Babcock, Bruce A.
name: Chalfant, James A.
name: Collender, Robert N.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries
Land Economics/Use

description: Multicrop farmers must choose variable input levels and land quantity for each crop. Economic researchers to date have analyzed these two decisions separately, either finding the best land use, given crop technologies, or solving for optimal input levels, ignoring the allocation of land. We show that both these approaches lead to suboptimal decision rules under risk aversion. An empirical example demonstrates that a risk-averse farmer who makes these decisions sequentially-first choosing input levels then allocating land-rather than simultaneously, may significantly understates the value of farming.
Relativistic Electromagnetic Mass Models: Charged Dust Distribution in Higher Dimensions
Creators: name: Ray, Saibal
name: Bhadra, Sumana
name: Mohanti, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Electromagnetic mass models are proved to exist in higher dimensional theory of general relativity corresponding to charged dust distribution. Along with the general proof a specific example is also sited as a supporting candidate.
description: Latex, 7 pages. Accepted in Astrophysics and Space Science
Tunable and Enhanced Rashba Spin-Orbit Coupling in Iridate-Manganite Heterostructures
Creators: name: Suraj, T. S.
name: Omar, Ganesh Ji
name: Jani, Hariom
name: Juvaid, Muhammad Mangattuchali
name: Hooda, Sonu
name: Chaudhuri, Anindita
name: Rusydi, Andrivo
name: Sethupathi, Kanikrishnan
name: Venkatesan, Thirumalai
name: Ariando, Ariando
name: Rao, Mamidanna Sri Ramachandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Tailoring spin-orbit interactions and Coulomb repulsion are the key features to observe exotic physical phenomena such as magnetic anisotropy and topological spin texture at oxide interfaces. Our study proposes a novel platform for engineering the magnetism and spin-orbit coupling at LaMnO3/SrIrO3 (3d-5d oxide) interfaces by tuning the LaMnO3 growth conditions which controls the lattice displacement and spin-correlated interfacial coupling through charge transfer. We report on a tunable and enhanced interface-induced Rashba spin-orbit coupling and Elliot-Yafet spin relaxation mechanism in LaMnO3/SrIrO3 bilayer with change in the underlying magnetic order of LaMnO3. We also observed enhanced spin-orbit coupling strength in LaMnO3/SrIrO3 compared to previously reported SrIrO3 layers. The X-Ray spectroscopy measurement reveals the quantitative valence of Mn and their impact on charge transfer. Further, we performed angle-dependent magnetoresistance measurements, which show signatures of magnetic proximity effect in SrIrO3 while reflecting the magnetic order of LaMnO3. Our work thus demonstrates a new route to engineer the interface induced Rashba spin-orbit coupling and magnetic proximity effect in 3d-5d oxide interfaces which makes SrIrO3 an ideal candidate for spintronics applications.
description: 10 Pages, 4 Figures
MEASURING FARMERS' RISK ATTITUDES: A CASE STUDY OF THE EASTERN PLATEAU REGION OF ALGERIA
Creators: name: Belaid, Abderrezak
name: Miller, Stanley F.
name: Belaid, Abderrezak
name: Miller, Stanley F.
Publisher: name: Unknown
Year: 1987
Subjects: Risk and Uncertainty

description: A modified experimental approach is used to elicit farmer utility functions in the eastern high plateau of Algeria. Based on the results, the hypothesis is tested that farmers' risk attitudes are modified by the agroecological zone in which they live, by the crops they grow, and the type of sector (private or socialist) in which they produce. It is concluded that while the studied farmers are risk averse, no intrinsic difference exists in farmers' attitudes between sectors or sites.
Mixing-induced CP asymmetry in B-> K* gamma decays with perturbative QCD approach
Creators: name: Matsumori, M.
name: Sanda, A. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mixing-induced CP asymmetries in B-> K* gamma -> K_S pi^0 gamma and B-> K* gamma -> K_L pi^0 gamma are expected to be small within the standard model. So they are among the most promising decay modes to test the standard model. In this paper, we compute the mixing-induced CP asymmetries in these decay modes, within the framework of the standard model, using perturbative QCD, and our conclusion is S_{K_S pi^0 gamma}=-S_{K_L pi^0 gamma}=-(3.5\pm 1.7)\times 10^{-2}.
description: 17 pages
THE VALUE OF PUBLIC INFORMATION FOR MICROECONOMIC PRODUCTION DECISIONS
Creators: name: Preckel, Paul V.
name: Loehman, Edna T.
name: Kaylen, Michael S.
name: Preckel, Paul V.
name: Loehman, Edna T.
name: Kaylen, Michael S.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries

description: Procedures are needed to evaluate the benefits of the provision of information. This paper shows how to apply a money metric definition of the value of information for this purpose. The application is to microeconomic input choices for agricultural production, and the information to be valued concerns the effect of fertilization on sorghum yield. In this paper application both output price and output level are stochastic, and the probability distribution of output is affected by the chosen level of fertilizer.
XENON1T signal from transition neutrino magnetic moments
Creators: name: Miranda, O. G.
name: Papoulias, D. K.
name: Tórtola, M.
name: Valle, J. W. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent puzzling results of the XENON1T collaboration at few keV electronic recoils could be due to the scattering of solar neutrinos endowed with finite Majorana transition magnetic moments (TMMs). Within such general formalism, we find that the observed excess in the XENON1T data agrees well with this interpretation. The required TMM strengths lie within the limits set by current experiments, such as Borexino, specially when one takes into account a possible tritium contamination.
description: 10 pages, 3 figures, 1 table. V2: Fig.1 updated, references added, matches published version
Was können wir aus der koptischen Literatur über Theologie und Frömmigkeit der Ägyptischen Kirche lernen?
Creators: name: Müller, Caspar Detlef G.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 48 (1964): Oriens christianus, Band 48
First-principles study of exchange interactions and Curie temperatures of half-metallic ferrimagnetic full Heusler alloys Mn2VZ (Z=Al, Ge)
Creators: name: Sasioglu, E.
name: Sandratskii, L. M.
name: Bruno, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the parameter-free, density functional theory calculations of interatomic exchange interactions and Curie temperatures of half-metallic ferrimagnetic full Heusler alloys Mn2VZ (Z=Al, Ge). To calculate the interatomic exchange interactions we employ the frozen-magnon approach. The Curie temperatures are calculated within the mean-field approximation to the classical Heisenberg Hamiltonian by solving a matrix equation for a multi-sublattice system. Our calculations show that, although a large magnetic moment is carried by Mn atoms, competing ferromagnetic (inter sublattice) and antiferromagnetic (intra sublattice) Mn-Mn interactions in Mn2VAl almost cancel each other in the mean-field experienced by the Mn atoms. In Mn2VGe the leading Mn-Mn exchange interaction is antiferromagnetic. In both compounds the ferromagnetism of the Mn subsystem is favored by strong antiferromagnetic Mn-V interactions. The obtained value of the Curie temperature of Mn2VAl is in good agrement with experiment. For Mn2VGe there is no experimental information available and our calculation is a prediction.
description: 7 pages, 3 figures
Additional file 1 of Assembly of the threespine stickleback Y chromosome reveals convergent signatures of sex chromosome evolution
Creators: name: Peichel, Catherine L.
name: Shaugnessy R. McCann
name: Ross, Joseph A.
name: Naftaly, Alice F. S.
name: Urton, James R.
name: Cech, Jennifer N.
name: Grimwood, Jane
name: Schmutz, Jeremy
name: Myers, Richard M.
name: Kingsley, David M.
name: White, Michael A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Supplementary tables.
Linear response theory in stochastic many-body systems revisited
Creators: name: Hayashi, Kumiko
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Green-Kubo relation, the Einstein relation, and the fluctuation-response relation are representative universal relations among measurable quantities that are valid in the linear response regime. We provide pedagogical proofs of these universal relations for stochastic many-body systems. Through these simple proofs, we characterize the three relations as follows. The Green-Kubo relation is a direct result of the local detailed balance condition, the fluctuation-response relation represents the dynamic extension of both the Green-Kubo relation and the fluctuation relation in equilibrium statistical mechanics, and the Einstein relation can be understood by considering thermodynamics. We also clarify the interrelationships among the universal relations.
description: 35 pages
Additional file 1 of Effects of firewood harvesting intensity on biodiversity and ecosystem services in shrublands of northern Patagonia
Creators: name: Goldenberg, Matías G.
name: Oddi, Facundo J.
name: Gowda, Juan H.
name: Garibaldi, Lucas A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1: Table S1 Fix effect coefficients from minimum adequate models after multi-model inference. In shadow all parameters that were not included in the selected AIC model (rank AIC function). The dash indicates that the specific predictor (row) was not evaluated for the indicator (column). Harvesting= treatment as a continuous variable. H2 = squared treatment, Spring= season as factor with two levels, Year2 = year as factor with two levels. Prod= productivity level of the site with three levels (high, medium, low).
8--13 um spectroscopy of YSOs: Evolution of the silicate feature
Creators: name: Kessler-Silacci, J. E.
name: Hillenbrand, L. A.
name: Blake, G. A.
name: Meyer, M. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to investigate possible connections between dust processing and disk properties, 8--13 um spectra of 34 young stars, with a range of circumstellar environments and spectral types A to M, were obtained using the Long Wavelength Spectrometer at the W. M. Keck Observatory. The broad 9.7 um amorphous silicate feature which dominates this wavelength regime evolves from absorption in young, embedded sources, to emission in optically revealed stars, and to complete absence in older debris disk systems for both low- and intermediate-mass stars. The peak wavelength and FWHM are centered about 9.7 and ~2.3 um, corresponding to amorphous olivine, with a larger spread in FWHM for embedded sources and in peak wavelength for disks. In a few of our objects that have been previously identified as class I low-mass YSOs, the observed silicate feature is complex, with absorption near 9.5 um and emission peaking around 10 um. Although most of the emission spectra show broad classical features attributed to amorphous silicates, variations in the shape/strength may be linked to dust processing, including grain growth and/or silicate crystallization. We study quantitatively the evidence for evolutionary trends in the 8--13 um spectra through a variety of spectral shape diagnostics. Based on the lack of correlation between these diagnostics and broad-band infrared luminosity characteristics for silicate emission sources, we conclude that although spectral signatures of dust processing are present, they can not be connected clearly to disk evolutionary stage (for optically thick disks) or optical depth (for optically thin disks). The diagnostics of silicate absorption features (other than the central wavelength of the feature), however, are tightly correlated with optical depth.
description: 27 pages, 13 figures, accepted for publication by ApJ, formatted with emulateapj using revtex4 v4.0
Additional file 2 of Assembly of the threespine stickleback Y chromosome reveals convergent signatures of sex chromosome evolution
Creators: name: Peichel, Catherine L.
name: Shaugnessy R. McCann
name: Ross, Joseph A.
name: Naftaly, Alice F. S.
name: Urton, James R.
name: Cech, Jennifer N.
name: Grimwood, Jane
name: Schmutz, Jeremy
name: Myers, Richard M.
name: Kingsley, David M.
name: White, Michael A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2. Supplementary figures.
New Physics in b -> s bar(s) s Decay. II: Study of B -> V1 V2 Modes
Creators: name: Nandi, Soumitra
name: Kundu, Anirban
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Various nonleptonic decay channels mediated by the quark-level subprocess $b\to s\bar{s} s$ show hints of deviation from the Standard Model expectations. We analyse the double-vector decay $B\toϕK^\ast$ with different generic new physics structures and find the constraints on the parameter spaces of new physics. The allowed parameter spaces are compatible with, but further narrowed down from, those obtained from a similar analysis using pseudoscalar modes. We also discuss further predictions for this channel as well as for $B_s\toϕϕ$, and show how even a partial measurement of the observables may discriminate between different models of new physics.
description: 13 pages, v3: more changes in the matter, in particular on the allowed Lorentz structures. The Arabic II dropped from the title. Version to be published
What does FRB light-curve variability tell us about the emission mechanism?
Creators: name: Beniamini, Paz
name: Kumar, Pawan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A few fast radio bursts' (FRBs) light-curves have exhibited large intrinsic modulations of their flux on extremely short ($t_{\rm r}\sim 10μ$s) time scales, compared to pulse durations ($t_{\rm FRB}\sim1$ms). Light-curve variability timescales, the small ratio of rise time of the flux to pulse duration, and the spectro-temporal correlations in the data constrain the compactness of the source and the mechanism responsible for the powerful radio emission. The constraints are strongest when radiation is produced far ($\gtrsim 10^{10}$cm) from the compact object. We describe different physical set-ups that can account for the observed $t_{\rm r}/t_{\rm FRB}\ll 1$ despite having large emission radii. The result is either a significant reduction in the radio production efficiency or distinct light-curves features that could be searched for in observed data. For the same class of models, we also show that due to high-latitude emission, if a flux $f_1(ν_1)$ is observed at $t_1$ then at a lower frequency $ν_2
description: 14 pages, 9 figures. Accepted for publication in MNRAS
Fragment isospin distributions and the phase diagram of excited nuclear systems
Creators: name: Raduta, Ad. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fragment average isospin distributions are investigated within a microcanonical multifragmentation model in different regions of the phase diagram. The results indicate that in the liquid phase $$ versus $Z$ is monotonically increasing, in the phase coexistence region it has a rise and fall shape and in the gas phase it is constant. Deviations from this behavior may manifest at low fragment multiplicity as a consequence of mass/charge conservation. Characterization of the "free" and "bound" phases function of fragment charge reconfirms the neutron enrichment of the "free" phase with respect to the "bound" one irrespectively the localization of the multifragmentation event in the phase diagram.
description: 23 pages, 12 figures
دراسة الانحرافات القوامية العلوية لدى عدائي ألعاب القوى فئة ( 12-13) سنة لولاية جيجل
Creators: name: ﺳﻌﻮدي, ﺳﻠﻴﻢ
name: ﻧﺤﺎوة, امين
Publisher: name: Zenodo
Year: 2024
Subjects: postural deviations, upper postural deviations, Athletics runners

description: This study aimed to identify the types of upper postural deviations that athletes runners aged 12-13 years suffer from, and the most prevalent deviations among the research sample. We use the descriptive approach that is appropriate to do the nature of our study. A sample of 10 athletes was selected using a purposive sampling method. And we used the bancraft test and posture screen as the main tool for data collection. we found that most of the members of the targeted study sample suffer from various upper postural deviations, with shoulder asymmetry being the most prevalent. Based on these results, the study recommends regular screening of young track and field athletes to assess their postural health, the development of corrective programs to address postural deviations and imbalances in this group of athletes, and the adoption of moderntraining methods recommended by experts for training this age group due to its sensitivity
Detection of Radial Surface Brightness Fluctuation and Color Gradients in elliptical galaxies with ACS
Creators: name: Cantiello, Michele
name: Blakeslee, John P.
name: Raimondo, Gabriella
name: Mei, Simona
name: Brocato, Enzo
name: Capaccioli, Massimo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study surface brightness fluctuations (SBF) in a sample of 8 elliptical galaxies using Advanced Camera for Surveys (ACS) Wide Field Channel (WFC) data drawn from the Hubble Space Telescope (HST) archive. SBF magnitudes in the F814W bandpass, and galaxy colors from F814W, F435W, and F606W images -- when available -- are presented. Galaxy surface brightness profiles are determined as well. We present the first SBF--broadband color calibration for the ACS/WFC F814W bandpass, and (relative) distance moduli estimates for 7 of our galaxies. We detect and study in detail the SBF variations within individual galaxies as a probe of possible changes in the underlying stellar populations. Inspecting both the SBF and color gradients in comparison to model predictions, we argue that SBF, and SBF-gradients, can in principle be used for unraveling the different evolutionary paths taken by galaxies, though a more comprehensive study of this issue would be required. We confirm that the radial variation of galaxy stellar population properties should be mainly connected to the presence of radial chemical abundance gradients, with the outer galaxy regions being more metal poor than the inner ones.
description: 47 pages, 13 figures, ApJ, accepted
Production of secondary particles in heavy nuclei interactions in supernova remnants
Creators: name: Bhatt, Maulik
name: Sushch, Iurii
name: Pohl, Martin
name: Fedynitch, Anatoli
name: Das, Samata
name: Brose, Robert
name: Plotko, Pavlo
name: Meyer, Dominique M. -A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Depending on their type, supernova remnants may have ejecta material with high abundance of heavy elements such as carbon or oxygen. In addition, core-collapse supernovae explode in the wind material of their progenitor star that may also have a high abundance of heavy elements. Hadronic collisions in these enriched media spawn the production of gamma rays, neutrinos, and secondary electrons with spectra that cannot be scaled from those calculated for pp collisions, potentially leading to erroneous results. We used Monte-Carlo event generators to calculate the differential production rate of particles such as gamma rays, neutrinos, and secondary electrons for H, He, C, and O nuclei as projectiles and as target material. The cross sections and the multiplicity spectra are separately computed for each of the 16 combinations of projectile and target. We describe characteristic effects of heavy nuclei in the shape and normalization of the spectra of various particles produced.
description: Final version; accepted for publication in Astroparticle Physics
$d$ band filling and magnetic phase separation in transition metal-doped Mn$_3$SnC
Creators: name: Gaonkar, V. N.
name: Dias, E. T.
name: Nigam, A. K.
name: Priolkar, K. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural and magnetic properties of transition metal-doped Mn$_3$SnC are studied with an aim to understand the effect of transition metal atom on magnetostructural properties of the antiperovskite compound. The doped Mn$_{2.8}$T$_{0.2}$SnC (T = Cr, Fe, Co, Ni and Cu) compounds show a distinctly different magnetic behavior which can be related to electronic filling of the $d$ band of the transition metal atom. While Cr and Fe doped Mn$_3$SnC show properties similar to that of Mn$_3$SnC, the Co, Ni and Cu doped compounds exhibit nucleation of secondary phases which are devoid of carbon and having Heusler and DO19 type hexagonal structure. A strong magnetic interaction is observed between the impurity phases and the major antiperovskite phase leading to a sharp decrease in magnetostructural transition temperature of the antiperovskite phase and a cluster glassy ground state.
Synoptische Evangelienzitate in Sinai-Mravalthavi von 864
Creators: name: Molitor, Joseph
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 48 (1964): Oriens christianus, Band 48
Coordinates, modes and maps for the density functional
Creators: name: Giraud, B. G.
name: Weiguny, A.
name: Wilets, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Special bases of orthogonal polynomials are defined, that are suited to expansions of density and potential perturbations under strict particle number conservation. Particle-hole expansions of the density response to an arbitrary perturbation by an external field can be inverted to generate a mapping between density and potential. Information is obtained for derivatives of the Hohenberg-Kohn functional in density space. A truncation of such an information in subspaces spanned by a few modes is possible. Numerical examples illustrate these algorithms.
description: 15 pages, 9 figures
An Ant-Plant Mesocosm Experiment Reveals Dispersal Patterns of Myrmecochorous Plants
Creators: name: Fokuhl, Gerriet
name: Heinze, Jürgen
name: Poschlod, Peter
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: myrmecochory; seed dispersal; mesocosm; ant exclosures
subject: 580 Pflanzen (Botanik)
subject: 590 Tiere (Zoologie)

description: For Central European herbs, ants are one common dispersal vector acting at relatively small spatial scales. Though extensively studied concerning the different benefits to plants, specific dispersal patterns mediated by ants have been reportedly very sparsely and without any validation. Thus, we studied the seed dispersal pattern of a set of myrmecochorous plant species in a novel mesocosm experiment. We examined the seed dispersal distances of four forest herbs (Hollow Root–Corydalis cava (L.) Schweigg. & Körte, Alpine Squill–Scilla bifolia L., and Common Dog-violet–Viola riviniana Rchb. and the annual Ivy-leaved Speedwell–Veronica hederifolia L.) by the red ant Myrmica ruginodis Nylander in 8.25 m² large plots under natural conditions with and without ants. In the presence of Myrmica ants, the bulb geophytes C. cava and S. bifolia showed a significantly higher fraction of dispersed seedlings and a maximum dispersal distance of 322 cm. Estimated by nearest neighbor analyses, distances between single C. cava seedlings were significantly higher in ant plots than in exclosures without ants. The annual species Veronica hederifolia showed a few dispersed seedlings in ant plots only, while the diplochorous hemicryptophyte Viola riviniana germinated in a widely scattered manner with distances up to 241 cm due to ballochorous dispersal in both ant and exclosure plots, but with a maximum of 324 cm only by means of ants. Our results indicate the escape from the mother plant and dispersal for distance as an important benefit for myrmecochorous species, potentially accompanied by benefits through reduced competition.
Different Types of Fe K_αLines from Radiating Annuli near Black Holes
Creators: name: Zakharov, Alexander F.
name: Repin, Serge V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent X-ray observations of microquasars and Seyfert galaxies reveal the broad emission lines in their spectra, which can arise in the innermost parts of accretion disks. A theoretical analysis of observations and their interpretations were discussed in a number of papers. We consider a radiating annulus model to simulate spectral line shapes. That is a natural approximation for narrow emitting circular rings without extra astrophysical assumptions about emissivity laws. Recently Muller & Camenzind (2004) presented results of their calculations and classified different types of spectral line shapes and described their origin. We clarified their hypothesis about an origin of doubled peaked and double horned line shapes. Based on results of numerical simulations we showed that double peaked spectral lines arise almost for any location of narrow emission rings (annuli) although Muller & Camenzind (2004) suggested that such profiles arise for relatively flat space-times and typical radii for emission region about 25 r_g. We showed that triangular spectral lines could arise for nearest annuli and high inclination angles. We discuss a possibility of appearance of narrow spectral line shapes as a result of spiralling evolution of matter along quasi-circular orbits which could be approximated by narrow annuli.
description: 11 pages, 1 figure, accepted in New Astronomy
CHANGES IN MARKET EQUILIBRIA RESULTING FROM FOOD SAFETY REGULATION IN THE MEAT AND POULTRY INDUSTRIES
Creators: name: Goodwin, Harold L.
name: Shiptsova, Rimma
name: Goodwin, Harold L.
name: Shiptsova, Rimma
Publisher: name: Unknown
Year: 2002
Subjects: Food Consumption/Nutrition/Food Safety
Livestock Production/Industries

description: This study presents a unique view on the USDA Food Safety and Inspection Service (USDA FSIS) implementation of the so-called "Mega-Reg" authorizing establishment of regulatory hazard analysis and critical control point (HACCP) procedures. Surveys were sent to plant managers of the 11 firms participating in the HACCP Roundtable at the University of Arkansas. Results of the survey were used to create HACCP implementation cost estimates for poultry kill plants and perform welfare analysis by using equilibrium displacement model (EDM). Results show average welfare losses up to 35 million a year for the broiler industry as well as substantial losses to consumers resulting from the new regulation.
Physics issues in simulations with dynamical overlap fermions
Creators: name: DeGrand, Thomas
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We discuss the impact of various improvements on simulations of dynamical overlap fermions using the Hybrid Monte Carlo algorithm. We focus on the usage of fat links and multiple pseudo-fermion fields.
description: 14 pages, 10 figures
ELICITING AND VALUING MARKET PREFERENCES WITH TRADITIONAL FOOD CROPS: THE CASE OF CHICKPEA IN INDIA
Creators: name: Agbola, Frank W.
name: Kelley, Timothy G.
name: Bent, Martin J.M.
name: Rao, P. Parthasarathy
name: Agbola, Frank W.
name: Kelley, Timothy G.
name: Bent, Martin J.M.
name: Rao, P. Parthasarathy
Publisher: name: Unknown
Year: 2002
Subjects: Crop Production/Industries
Demand and Price Analysis

description: During the past decade the Indian chickpea industry underwent a dramatic structural shift following the implementation of market-oriented policies by the Government of India. This paper examines consumer attitudes to quality characteristics of chickpea in India. A linear hedonic price model is estimated using auction price and quality data of chickpea samples obtained from major markets in India. Empirical results indicate that specific physical quality characteristics and purity standards are important factors influencing the price of chickpea in India. Thus, there may be an incentive for domestic producers and sellers of chickpea - and exporting countries - to improve the quality of their product, if improvements in specific physical characteristics and purity can be obtained cost effectively. As trade prospects grow for regionally important food crops like chickpea and other pulses, it is essential that food managers, commodity exporters, and crop breeders have access to critical market information in order to assess the relative economic importance of preferred quality traits and plan their strategies accordingly.
THE IMPACT OF TRUST ON COOPERATIVE MEMBERSHIP RETENTION, PERFORMANCE, AND SATISFACTION: AN EXPLORATORY STUDY
Creators: name: Hansen, Mark H.
name: Morrow, J.L.
name: Batista, Juan C.
name: Hansen, Mark H.
name: Morrow, J.L.
name: Batista, Juan C.
Publisher: name: Unknown
Year: 2002
Subjects: Agribusiness
Institutional and Behavioral Economics

description: This research explores the effect of trust in the relationships among members and between members and the management teams of two agricultural marketing cooperatives (co-ops). Specifically, this research focuses on the impact of trust on co-op members' performance, satisfaction, and their commitment to remaining a part of the co-ops. We examine trust along two dimensions: cognitive and affective. We argue that cognitive-based trust will be more salient in some contexts while affective-based trust will be more salient in other settings. Findings suggest that in both co-ops, trust among members and trust between members and co-op management are important predictors of group cohesion, which is a measure of the strength of members' desires to remain in a group (co-op) and their commitment to it. As hypothesized, there are differences in the effects of cognitive and affective trust, depending upon differences in the contexts represented by the two co-ops.
NONPARAMETRIC ESTIMATION OF MULTIPRODUCT AND PRODUCT-SPECIFIC ECONOMIES OF SCALE
Creators: name: Coffey, Brian K.
name: Featherstone, Allen M.
name: Coffey, Brian K.
name: Featherstone, Allen M.
Publisher: name: Unknown
Year: 2004
Subjects: Industrial Organization

description: Numerous studies have utilized nonparametric estimation of production efficiency but no such study focuses on multiproduct or product-specific economies of scale. A mathematical program is specified to nonparametrically estimate these measures for crops and livestock for Kansas farms. Results show that many farms would realize benefits from expansion.
On the series $\pmb{\sum_{k = 1}^\infty \binom{3k}{k}^{-1}k^{-n} x^k}$
Creators: name: Batir, Necdet
Publisher: name: arXiv
Year: 2005
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 33B30; 05A10; 11B65

description: In this paper we investigate the series $\sum_{k = 1}^\infty \binom{3k}{k}^{-1}k^{-n}x^k$. Obtaining some integral representations of them, we evaluated the sum of them explicitly for $n = 0, 1, 2$.
description: 11 pages
MARGINAL EFFECTS OF LAND CHARACTERISTICS AND PURCHASE FACTORS ON RURAL LAND VALUES
Creators: name: McLaren, Rebecca S.
name: Henning, Steven A.
name: Vandeveer, Lonnie R.
name: McLaren, Rebecca S.
name: Henning, Steven A.
name: Vandeveer, Lonnie R.
Publisher: name: Unknown
Year: 2004
Subjects: Land Economics/Use

description: Hedonic models estimate the marginal effect of land characteristics and factors that contribute to a purchase decision on rural land values in submarkets of north Louisiana. While size of tract and mix of land use have expected impacts on rural land values, forces that motivate the buyer also affect price.
Experimental realization of topological on-chip acoustic tweezers
Creators: name: Dai, Hongqing
name: Liu, Linbo
name: Xia, Baizhan
name: Yu, Dejie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Acoustic tweezers are gaining increasing attention due to their excellent biological compatibility. Recently, the concept of topology has been expanded from condensed matter physics into acoustics, giving rise to a robust wave manipulation against defects and sharp turns. So far, topological acoustics have not been experimentally realized in on-chip level which can be worked as tweezers for microparticle manipulations. Here, we achieved a topological on-chip acoustic tweezer based on the topologically protected phononic mode. This tweezer consisted of one-dimensional arrays of Helmholtz resonant air cavities. Strong microfluidic oscillations induced by acoustic waves were experimentally observed at water-air surfaces of Helmholtz resonant air cavities at the topological interface. Acoustic radiation force induced by these microfluidic oscillations captured microparticles whose sizes were up to 20 um and made them do orbital rotations. Our topological on-chip acoustic tweezer realized non-contact label-free microparticle manipulations in microfluidics and exhibited enormous application potential in the biomedical field.
description: 14 pages, 5 figures
COMPARING THE REVENUE RISK REDUCTION OF A RAINFALL INDEX INSURANCE CONTRACT USING VALUE-AT RISK AND DISPERSION MEASURES OF RISK
Creators: name: Bamba, Ibrahim
name: Bamba, Ibrahim
Publisher: name: Unknown
Year: 2004
Subjects: Risk and Uncertainty

description: Tail risk measures such as the Value-at-Risk (VaR) are being advocated as conceptually appropriate statistical and economical alternatives to dispersion measures of risk. VaR and dispersion risk measures are applied to assess the revenue risk reduction potential of an index rainfall insurance. VaR and dispersion measures indicate that a Rainfall Index Insurance Contract reduces revenue risk.
description: Replaced with revised version of paper 01/29/04.
TWO METHODS OF ESTIMATING SEMIPARAMETRIC COMPONENT IN THE ENVIRONMENTAL KUZNET'S CURVE (EKC)
Creators: name: Paudel, Krishna P.
name: Zapata, Hector O.
name: Paudel, Krishna P.
name: Zapata, Hector O.
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy

description: This study compares parametric and semiparametric smoothing techniques to estimate the environmental Kuznet curve. The ad hoc functional form where income is related either as a square or a cubic function to environmental quality is relaxed in search of a better nonlinear fit to the pollution-income relationship for panel data.
Massive relativistic particle model with spin from free two-twistor dynamics and its quantization
Creators: name: de Azcarraga, Jose A.
name: Frydryszak, Andrzej
name: Lukierski, Jerzy
name: Miquel-Espanya, Cesar
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a relativistic particle model in an enlarged relativistic phase space M^{18} = (X_μ, P_μ, η_α, \oeta_\dalpha, σ_α, \osigma_\dalpha, e, ϕ), which is derived from the free two-twistor dynamics. The spin sector variables (η_α, \oeta_\dalpha, σ_α,\ osigma_\dalpha) satisfy two second class constraints and account for the relativistic spin structure, and the pair (e,ϕ) describes the electric charge sector. After introducing the Liouville one-form on M^{18}, derived by a non-linear transformation of the canonical Liouville one-form on the two-twistor space, we analyze the dynamics described by the first and second class constraints. We use a composite orthogonal basis in four-momentum space to obtain the scalars defining the invariant spin projections. The first-quantized theory provides a consistent set of wave equations, determining the mass, spin, invariant spin projection and electric charge of the relativistic particle. The wavefunction provides a generating functional for free, massive higher spin fields.
description: FTUV-05-0919, IFIC-05-46, IFT UWr 0110/05. Plain latex file, no macros, 22 pages. A comment and references added. To appear in PRD15
FARMERS' PERCEPTIONS OF SPATIAL YIELD VARIABILITY AS INFLUENCED BY PRECISION FARMING INFORMATION GATHERING TECHNOLOGIES
Creators: name: Roberts, Roland K.
name: Larson, James A.
name: Roberts, Roland K.
name: Larson, James A.
Publisher: name: Unknown
Year: 2004
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This study evaluated how farmers' perceptions of spatial yield variability are influenced by precision technologies. Farmer estimates from a mail survey were regressed on use of alternative information technologies and personal characteristics. Results indicate that farmers who adopted yield monitors with GPS for cotton perceived significantly higher spatial yield variability.
SALES RESPONSES TO RECALLS FOR LISTERIA MONOCYTOGENES: EVIDENCE FROM BRANDED READY-TO-EAT MEATS
Creators: name: Thomsen, Michael R.
name: Shiptsova, Rimma
name: Hamm, Sandra J.
name: Thomsen, Michael R.
name: Shiptsova, Rimma
name: Hamm, Sandra J.
Publisher: name: Unknown
Year: 2004
Subjects: Food Consumption/Nutrition/Food Safety

description: Empirical models are used to measure sales losses experienced by frankfurter brands following a recall for a foodborne pathogen. Recalled brands experience a 22 to 27 percent sales decline after a recall. Brand recovery occurs within 4 to 5 months after a recall. Non-recalled brands do not experience sales losses.
Tau neutrinos at DUNE: new strategies, new opportunities
Creators: name: Machado, Pedro
name: Schulz, Holger
name: Turner, Jessica
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a novel analysis strategy, that leverages the unique capabilities of the DUNE experiment, to study tau neutrinos. We integrate collider physics ideas, such as jet clustering algorithms in combination with machine learning techniques, into neutrino measurements. Through the construction of a set of observables and kinematic cuts, we obtain a superior discrimination of the signal ($S$) over the background ($B$). In a single year, using the nominal neutrino beam mode, DUNE may achieve $S/\sqrt{B}$ of $3.3$ and $2.3$ for the hadronic and leptonic decay channels of the tau respectively. Operating in the tau-optimized beam mode would increase $S/\sqrt{B}$ to $8.8$ and $11$ for each of these channels. We premier the use of the analysis software Rivet, a tool ubiquitously used by the LHC experiments, in neutrino physics. For wider accessibility, we provide our analysis code.
description: 10 pages, 9 figures. Figure labels enlarged, expanded captions and included url for code in references. Matches PRD accepted version
Four-Point Functions in Logarithmic Conformal Field Theories
Creators: name: Flohr, Michael
name: Krohn, Marco
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The generic structure of 4-point functions of fields residing in indecomposable representations of arbitrary rank is given. The used algorithm is described and we present all results for Jordan-rank $r=2$ and $r=3$ where we make use of permutation symmetry and use a graphical representation for the results. A number of remaining degrees of freedom which can show up in the correlator are discussed in detail. Finally we present the results for two-logarithmic fields for arbitrary Jordan-rank.
description: latex 33 pages, 1 figure
pygiftgenerator: A python module designed to prepare Moodle-based quizzes
Creators: name: Sáenz, Jon
name: Gurtubay, Idoia G
name: Izaola, Zunbeltz
name: López, Gabriel A
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We present pygiftgenerator, a python module for systematically preparing a large number of numerical and multiple-choice questions for Moodle-based quizzes oriented to students' formative evaluation. The use of the module is illustrated by means of examples provided with the code and they cover topics from Mechanics, Electromagnetism, Thermodynamics and Modern Physics. The fact that pygiftgenerator relies on a well-established computer language which allows to combine and reuse functions in order to solve complex problems, makes it a very robust tool. Simply by changing the input parameters, a large question bank with solutions even to complex physical problems can be generated. Thus, it is a powerful alternative to the calculated and multiple choice questions which can be written directly in the Moodle platform. The module writes the questions to be imported into Moodle in a simple and human-readable ASCII output using the GIFT format, which enables html definitions for URLs for importing figures, or for simple text formatting (sub/superindices or Greek letters) for equations and units. This format also admits LaTeX typing for complex equations.
description: 15 pages, 5 figures