cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Calculation of the neutron electric dipole moment with two dynamical flavors of domain wall fermions
Creators: name: Berruto, F.
name: Blum, T.
name: Orginos, K.
name: Soni, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a study of the neutron electric dipole moment ($\vec d_N$) within the framework of lattice QCD with two flavors of dynamical lig ht quarks. The dipole moment is sensitive to the topological structure of the gaug e fields, and accuracy can only be achieved by using dynamical, or sea quark, calc ulations. However, the topological charge evolves slowly in these calculations, le ading to a relatively large uncertainty in $\vec d_N$. It is shown, using quenched configurations, that a better sampling of the charge d istribution reduces this problem, but because the CP even part of the fermion determinant is absent, both the topological charge dis tribution and $\vec d_N$ are pathological in the chiral limit. We discuss the statistical and systematic uncertainties arising from the topological charge distr ibution and unphysical size of the quark mass in our calculations and prospects fo r eliminating them. Our calculations employ the RBC collaboration two flavor domain wall fermion and DBW2 gauge action lattices with inverse lattice spacing $a^{-1}\approx$ 1.7 GeV, physical volume $V\approx (2$ fm)$^3$, and light quark mass roughly equal to the strange quark mass ($m_{sea}=0.03 $ and 0.04). We determine a value of the electric dipole moment that is zero withi n (statistical) errors, $|\vec d_N| = -0.04(20)$ e-$θ$-fm at the smaller sea quark mass. Satisfactory results for the magnetic and electric form factors of the proton and neutron are also obtained and presented.
description: 46 pages. Changed one author address
SSHealth: Toward Secure, Blockchain-Enabled Healthcare Systems
Creators: name: Abdellatif, Alaa Awad
name: Al-Marridi, Abeer Z.
name: Mohamed, Amr
name: Erbad, Aiman
name: Chiasserini, Carla Fabiana
name: Refaey, Ahmed
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The future of healthcare systems is being shaped by incorporating emerged technological innovations to drive new models for patient care. By acquiring, integrating, analyzing, and exchanging medical data at different system levels, new practices can be introduced, offering a radical improvement to healthcare services. This paper presents a novel smart and secure Healthcare system (ssHealth), which, leveraging advances in edge computing and blockchain technologies, permits epidemics discovering, remote monitoring, and fast emergency response. The proposed system also allows for secure medical data exchange among local healthcare entities, thus realizing the integration of multiple national and international entities and enabling the correlation of critical medical events for, e.g., emerging epidemics management and control. In particular, we develop a blockchain-based architecture and enable a flexible configuration thereof, which optimize medical data sharing between different health entities and fulfil the diverse levels of Quality of Service (QoS) that ssHealth may require. Finally, we highlight the benefits of the proposed ssHealth system and possible directions for future research.
Additional file 5 of Prevalence of thinness and its effect on height velocity in schoolchildren
Creators: name: Narchi, Hassib
name: Alblooshi, Afaf
name: Maisoon Altunaiji
name: Alali, Nawal
name: Alshehhi, Latifa
name: Alshehhi, Huda
name: Almazrouei, Asma
name: Alsuwaidi, Ahmed R.
name: Souid, Abdul-Kader
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: Plasma Physics
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 5. Comparison of the prevalence of thinness based on the IOTF, CDC, and WHO classifications (n = 29,410). IOTF: International Obesity Task Force; CDC: Centers for Disease Control and Prevention; WHO: World Health Organization; *chi-squared for R x C table.
EDUCATING THE UNDERGRADUATE AGRIBUSINESS MAJOR
Creators: name: Vandeveer, Lonnie R.
name: Guedry, Leo J.
name: Vandeveer, Lonnie R.
name: Guedry, Leo J.
Publisher: name: Unknown
Year: 1992
Subjects: Teaching/Communication/Extension/Profession

description: Undergraduate programs in agribusiness education have attracted much interest in recent years. Many university facilities have developed agribusiness educational programs and others are considering the development of such programs. As these programs evolve throughout the country, there are many questions which relate to the structure and future directions of these educational efforts. A review of the issues related to agribusiness program development is presented. A planning process that can be used to focus on the many agribusiness educational issues and provide insight into agribusiness program development in outlined.
Correlated adatom trimer on metal surface: A continuous time quantum Monte Carlo study
Creators: name: Savkin, V. V.
name: Rubtsov, A. N.
name: Katsnelson, M. I.
name: Lichtenstein, A. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The problem of three interacting Kondo impurities is solved within a numerically exact continuous time quantum Monte Carlo scheme. A suppression of the Kondo resonance by interatomic exchange interactions for different cluster geometries is investigated. It is shown that a drastic difference between the Heisenberg and Ising cases appears for antiferromagnetically coupled adatoms. The effects of magnetic frustrations in the adatom trimer are investigated, and possible connections with available experimental data are discussed.
description: 4 pages, 4 figures
Additional file 6 of Prevalence of thinness and its effect on height velocity in schoolchildren
Creators: name: Narchi, Hassib
name: Alblooshi, Afaf
name: Maisoon Altunaiji
name: Alali, Nawal
name: Alshehhi, Latifa
name: Alshehhi, Huda
name: Almazrouei, Asma
name: Alsuwaidi, Ahmed R.
name: Souid, Abdul-Kader
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: Plasma Physics
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 6. Prevalence of thinness by age using the IOTF BMI classification. BMI; body mass index; IOTF: International Obesity Task Force; CI confidence intervals; *chi-squared test.
Localisation on certain graphs with strongly correlated disorder
Creators: name: Roy, Sthitadhi
name: Logan, David E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many-body localisation in interacting quantum systems can be cast as a disordered hopping problem on the underlying Fock-space graph. A crucial feature of the effective Fock-space disorder is that the Fock-space site energies are strongly correlated -- maximally so for sites separated by a finite distance on the graph. Motivated by this, and to understand the effect of such correlations more fundamentally, we study Anderson localisation on Cayley trees and random regular graphs, with maximally correlated disorder. Since such correlations suppress short distance fluctuations in the disorder potential, one might naively suppose they disfavour localisation. We find however that there exists an Anderson transition, and indeed that localisation is more robust in the sense that the critical disorder scales with graph connectivity $K$ as $\sqrt{K}$, in marked contrast to $K\ln K$ in the uncorrelated case. This scaling is argued to be intimately connected to the stability of many-body localisation. Our analysis centres on an exact recursive formulation for the local propagators as well as a self-consistent mean-field theory; with results corroborated using exact diagonalisation.
description: 6 pages, 3 figures + supplementary (3 pages, 3 figures)
Evidence for dominant phonon-electron scattering in Weyl semimetal WP$_{2}$
Creators: name: Osterhoudt, Gavin B.
name: Plisson, Vincent M.
name: Wang, Yaxian
name: Garcia, Christina A. C.
name: Gooth, Johannes
name: Felser, Claudia
name: Narang, Prineha
name: Burch, Kenneth S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological semimetals have revealed a wide array of novel transport phenomena, including electron hydrodynamics, quantum field theoretic anomalies, and extreme magnetoresistances and mobilities. However, the scattering mechanisms central to these behaviors remain largely unexplored. Here we reveal signatures of significant phonon-electron scattering in the type-II Weyl semimetal WP$_{2}$ via temperature-dependent Raman spectroscopy. Over a large temperature range, we find that the decay rates of the lowest energy $A_{1}$ modes are dominated by phonon-electron rather than phonon-phonon scattering. In conjunction with first-principles calculations, a combined analysis of the momentum, energy, and symmetry-allowed decay paths indicates this results from intraband scattering of the electrons. The excellent agreement with theory further suggests that such results could be true for the acoustic modes. We thus provide evidence for the importance of phonons in the transport properties of topological semimetals and identify specific properties that may contribute to such behavior in other materials.
description: 8 pages, 4 figures
Optical pumping of the electron spin polarization in bulk CuCl
Creators: name: Ungier, W.
name: Buczko, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In CuCl bulk crystal negatively charged excitons (trions $X^-$) can be induced by the resonant optical excitation of extra electrons in conduction band minimum. In the case of light polarization and due to the top valence band structure of CuCl only the electrons with spin antiparallel to the direction of the light propagation contribute to the formation of $X^-$, while the emerging $X^-$ can recombine into both possible electron states, with spin parallel and antiparallel to the direction of light propagation. We propose to use this mechanism for optical electronic spin pumping. We describe the dynamics of pumping in terms of density matrix formalism. The coherent pumping laser pulse propagating through the sample is described by Maxwell wave equation coupled to the density matrix evolution equations. The results of our approximate simple model calculations suggest that spin polarization close to 100% can be achieved in time shorter than 100ps.
description: new extended version, 7 pages, 4 figures
Assessing the Zero Hunger Target Readiness in Africa in the Face of COVID-19 Pandemic
Creators: name: Otekunrin, Olutosin
Publisher: name: figshare
Year: 2020
Subjects: subject: 70106 Farm Management, Rural Management and Agribusiness
subject: FOS: Other agricultural sciences
subject: 150305 Human Resources Management
subject: FOS: Economics and business

description: Sustainable Development Goal 2 (SDG 2) is hinged on achieving zero hunger target globally by 2030. Many developing countries, especially African countries, are challenged with extreme hunger that are often caused or compounded by bad governance, conflicts and climate change. In this paper, we assess Africa’s readiness towards attaining the zero hunger target by 2030 in the face of COVID-19 pandemic. Patterns of Global Hunger Index (GHI) and each of its indicators across Africa are compared before the pandemic (2000-2019). The effect of the pandemic on the hunger situation in Africa is discussed by highlighting the mitigating measures put in place by selected African governments. We have found that most African countries have recorded steady reduction in their child mortality rates but high prevalence of undernourishment, stunting and child wasting indicates significant challenges hampering the achievement of the zero hunger target. The study recommends that African governments should prioritize sustainable agricultural practices and give serious attention to the formulation and implementation of policies that reduce hunger against the COVID-19 pandemic.
The entropy of hot QCD at large N_f: Successfully testing weak coupling techniques
Creators: name: Blaizot, Jean-Paul
name: Ipp, Andreas
name: Rebhan, Anton
name: Reinosa, Urko
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been known for some time that the entropy of hot QCD is well reproduced by weak coupling techniques. These do not identify with perturbation theory, known to have poor convergence properties, but involve resumming the physics of hard thermal loops in the non-perturbative Phi-derivable two-loop approximation. We test this approximation scheme in the limit of large flavor number (N_f) where the exact result can be calculated for a wide range of couplings for which the influence of the Landau pole is negligible. Using full momentum-dependent fermionic self-energies instead of the previously only known weighted average value to order g^3, the exact result for the entropy can be remarkably well reproduced by the HTL resummed theory for a natural choice of the renormalization scale, and this up to large values of the coupling. This gives confidence in the reliability of weak coupling techniques when applied to the thermodynamics of QCD, at least for temperatures T > 3 T_c.
description: 4 pages, 3 figures, poster contribution at Quark Matter 2005, to be published in Romanian Reports in Physics
DESIGNING GRADUATE EDUCATION FOR AGRIBUSINESS STUDENTS
Creators: name: Phillips, Travis D.
name: Couvillion, Warren C.
name: Daughtrey, Zoel W.
name: Burckel, Daryl V.
name: Phillips, Travis D.
name: Couvillion, Warren C.
name: Daughtrey, Zoel W.
name: Burckel, Daryl V.
Publisher: name: Unknown
Year: 1992
Subjects: Teaching/Communication/Extension/Profession

description: For several years, universities in the U.S. have been struggling with defining and refining undergraduate and graduate agribusiness education programs. With the release of the recommendations of the National Agribusiness Education Commission, the search for the key ingredients of a Masters-level program has intensified. Mississippi State University has been among those universities attempting to define the parameters of a "cutting edge" agribusiness program. Faculty interest within the College of Business and Industry and the Agricultural Economics Department to develop a joint program has precipitated intensive efforts to achieve this goal. A nationally recognized agribusiness group of six academic leaders served as a Cooperative State Research Service team to assess the University's potential, using the concept of an agribusiness institute as an integrating and management vehicle. Efforts in this direction have been aided by a USDA planning grant now moving into its second year. A survey of Mid-South agribusiness leaders indicates the interest of the industry in development of the program. The final step is to address the logistical details required to convert the current Master of Agribusiness Management in the Department of Agricultural Economics to a jointly administered program of study.
Electron cyclotron mass in undoped CdTe/CdMnTe quantum wells
Creators: name: Dremin, A. A.
name: Yakovlev, D. R.
name: Sirenko, A. A.
name: Gubarev, S. I.
name: Shabelsky, O. P.
name: Waag, A.
name: Bayer, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optically detected cyclotron resonance of two-dimensional electrons has been studied in nominally undoped CdTe/(Cd,Mn)Te quantum wells. The enhancement of carrier quantum confinement results in an increase of the electron cyclotron mass from 0.099$m_0 $ to 0.112$m_0 $ with well width decreasing from 30 down to 3.6 nm. Model calculations of the electron effective mass have been performed for this material system and good agreement with experimental data is achieved for an electron-phonon coupling constant $α$=0.32.
Reflected Entropy for an Evaporating Black Hole
Creators: name: Li, Tianyi
name: Chu, Jinwei
name: Zhou, Yang
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study reflected entropy as a correlation measure in black hole evaporation. As a measure for bipartite mixed states, reflected entropy can be computed between black hole and radiation, radiation and radiation. We compute reflected entropy curves in three different models: 3-side wormhole model, End-of-the-World (EOW) brane model in three dimensions and two-dimensional eternal black hole plus CFT model. For 3-side wormhole model, we find that reflected entropy is dual to island cross sections. The reflected entropy between radiation and black hole increases at early time and then decreases to zero, similar to Page curve, but with a later transition time. The reflected entropy between radiation and radiation first increases and then saturates. For the EOW brane model, similar behaviors of reflected entropy are found. We propose a quantum extremal surface for reflected entropy, which we call quantum extremal cross section. In the eternal black hole plus CFT model, we find a generalized formula for reflected entropy with island cross section as its area term by considering the right half as the canonical purification of the left. Interestingly, the reflected entropy curve between the left black hole and the left radiation is nothing but the Page curve. We also find that reflected entropy between the left black hole and the right black hole decreases and goes to zero at late time. The reflected entropy between radiation and radiation increases at early time and saturates at late time.
description: 43+1 pages, 29 figures
Extended X-ray emission from the z=4.26 radio galaxy 4C 63.20
Creators: name: Napier, Kate
name: Foord, Adi
name: Gallo, Elena
name: Ghisellini, Gabriele
name: Hodges-Kluck, Edmund
name: Wu, Jianfeng
name: Haardt, Francesco
name: Ciardi, Benedetta
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on deep Chandra X-ray Telescope imaging observations of 4C 63.20, one of the few known radio galaxies at z>3.5. The X-ray counterpart is resolved into a core plus two off-nuclear sources that (combined) account for close to 30% of the total X-ray flux. Their morphology and orientation are consistent with a diffuse, lobe-like nature, albeit compact hotspots cannot be ruled out. The broadband spectral energy distribution of 4C 63.20 can be reproduced with a jet model where the majority of the radio flux can be ascribed to synchrotron emission from the hotspots, whereas the (non-nuclear) X-ray emission is produced via Inverse Compton (IC) off of Cosmic Microwave Background (CMB) photons within the extended lobes. This scenario is broadly consistent with the expectation from highly magnetized lobes in a hotter CMB, and supports the view that IC/CMB may quench less extreme radio lobes at high redshifts.
description: 10 pages, 8 figures, accepted to MNRAS
SELECTING THE "BEST" PREDICTION MODEL: AN APPLICATION TO AGRICULTURAL COOPERATIVES
Creators: name: Rambaldi, Alicia N.
name: Zapata, Hector O.
name: Christy, Ralph D.
name: Rambaldi, Alicia N.
name: Zapata, Hector O.
name: Christy, Ralph D.
Publisher: name: Unknown
Year: 1992
Subjects: Agribusiness

description: A credit scoring function incorporating statistical selection criteria was proposed to evaluate the credit worthiness of agricultural cooperative loans in the Fifth Farm Credit District. In-sample (1981-1986) and out-of-sample (1988) prediction performance of the selected models were evaluated using rank transformation discriminant analysis, logit, and probit. Results indicate superior out-of-sample performance for the management oriented approach relative to classification of unacceptable loans, and poor performance of the rank transformation in out-of-sample prediction.
Protoneutron star dynamos and pulsar magnetism
Creators: name: Bonanno, A.
name: Urpin, V.
name: Belvedere, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated the turbulent mean-field dynamo action in protoneutron stars that are subject to convective and neutron finger instabilities during the early evolutionary phase. While the first one develops mostly in the inner regions of the star, the second one is favored in the outer regions, where the Rossby number is much smaller and a mean-field dynamo action is more efficient. By solving the mean-field induction equation we have computed the critical spin period below which no dynamo action is possible and found it to be $\sim 1$ s for a wide range of stellar models and for both axisymmetric and non-axisymmetric magnetic fields. Because this critical period is substantially longer than the characteristic spin period of very young pulsars, we expect that a mean-field dynamo will be effective for most protoneutron stars. The saturation dipole field estimated by making use of the model of ``global'' quenching fits well the pulsar magnetic fields inferred from the spin-down data. Apart from the large scale magnetic field, our model predicts also a generation of small scale fields which are typically stronger than the poloidal field and can survive during the lifetime of pulsars. Extremely rapidly rotating protoneutron stars ($P \sim 1$ ms) may have the dipole field $\sim (3-6) \times 10^{14}$ G.
description: 7 pages, 6 figures, to appear on A&A
Colin, Gérard: La gloire des rois (Kebra Nagast)
Creators: name: Kropp, Manfred
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 87 (2003): Oriens christianus, Band 87
WD1032+011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
Creators: name: Casewell, S. L.
name: Belardi, C.
name: Parsons, S. G.
name: Littlefair, S. P.
name: Braker, I. P.
name: Hermes, J. J.
name: Debes, J.
name: Vanderbosch, Z.
name: Burleigh, M. R.
name: Gaensicke, B. T.
name: Dhillon, V. S.
name: Marsh, T. R.
name: Winget, D. E.
name: Winget, K. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery of only the third brown dwarf known to eclipse a non-accreting white dwarf. Gaia parallax information and multi-colour photometry confirm that the white dwarf is cool (9950$\pm$150K) and has a low mass (0.45$\pm$0.05~MSun), and spectra and lightcurves suggest the brown dwarf has a mass of 0.067 $\pm$0.006 MSun (70 MJup) and a spectral type of L5 $\pm$1. The kinematics of the system show that the binary is likely to be a member of the thick disk and therefore at least 5 Gyr old. The high cadence lightcurves show that the brown dwarf is inflated, making it the first brown dwarf in an eclipsing white dwarf-brown dwarf binary to be so.
description: Accepted for publication in MNRAS, 11 pages, 7 Figures
MICROECONOMIC EFFECTS OF REDUCED YIELD VARIABILITY CULTIVARS OF SOYBEANS AND WHEAT
Creators: name: Dillon, Carl R.
name: Dillon, Carl R.
Publisher: name: Unknown
Year: 1992
Subjects: Crop Production/Industries

description: Economic analysis was conducted on hypothetical agronomic research on new crop cultivars for Arkansas dryland soybean and wheat producers. In relation to farmers' attitudes toward risk, the microeconomic effects and level of adoption of yield variability reducing cultivars were analyzed utilizing a production management decision-making model formulated with mathematical programming techniques. The study indicated that negative covariance between crops continues to be an effective means of reducing production risk associated with yield variability. However, under varying circumstances, agronomic research on the breeding of new soybean and wheat cultivars with reduced yield variability is worthwhile if there is only slight concurrent reduction in expected yields.
Additional file 7 of An observational field study of the cloacal microbiota in adult laying hens with and without access to an outdoor range
Creators: name: Schreuder, Janneke
name: Velkers, Francisca C.
name: Bouwstra, Ruth J.
name: Beerens, Nancy
name: J. Arjan Stegeman
name: Boer, Willem F. De
name: P. Van Hooft
name: Elbers, Armin R. W.
name: Bossers, Alex
name: Jurburg, Stephanie D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 7: Figure S5. Relative abundances (%) of the five genera that were significantly different between indoor- and outdoor-layers on Wilcoxon-Rank-Sum test (p
Star Formation in NGC5194 (M51a): The Panchromatic View from GALEX to Spitzer
Creators: name: Calzetti, D.
name: Kennicutt, R. C.
name: Bianchi, L.
name: Thilker, D. A.
name: Dale, D. A.
name: Engelbracht, C. W.
name: Leitherer, C.
name: Meyer, M. J.
name: Sosey, M. L.
name: Mutchler, M.
name: Regan, M. W.
name: Thornley, M. D.
name: Armus, L.
name: Bendo, G. J.
name: Boissier, S.
name: Boselli, A.
name: Draine, B. T.
name: Gordon, K. D.
name: Helou, G.
name: Hollenbach, D. J.
name: Kewley, L.
name: Madore, B. F.
name: Martin, D. C.
name: Murphy, E. J.
name: Rieke, G. H.
name: Rieke, M. J.
name: Roussel, H.
name: Sheth, K.
name: Smith, J. D.
name: Walter, F.
name: White, B. A.
name: Yi, S.
name: Scoville, N. Z.
name: Polletta, M.
name: Lindler, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Far ultraviolet to far infrared images of the nearby galaxy NGC5194, from Spitzer, GALEX, Hubble Space Telescope and ground--based data, are used to investigate local and global star formation, and the impact of dust extinction in HII-emitting knots. In the IR/UV-UV color plane, the NGC5194 HII knots show the same trend observed for normal star-forming galaxies, having a much larger dispersion than starburst galaxies. We identify the dispersion as due to the UV emission predominantly tracing the evolved, non-ionizing stellar population, up to ages 50-100 Myr. While in starbursts the UV light traces the current SFR, in NGC5194 it traces a combination of current and recent-past SFR. Unlike the UV emission, the monochromatic 24 micron luminosity is an accurate local SFR tracer for the HII knots in NGC5194; this suggests that the 24 micron emission carriers are mainly heated by the young, ionizing stars. However, preliminary results show that the ratio of the 24 micron emission to the SFR varies by a factor of a few from galaxy to galaxy. While also correlated with star formation, the 8 micron emission is not directly proportional to the number of ionizing photons. This confirms earlier suggestions that the carriers of the 8 micron emission are heated by more than one mechanism.
description: 66 pages, 20 figures (Figures 1-4 are in JPEG format, figures 5-20 are embedded postscript files). Accepted for publication on the Astrophysical Journal
AGRIBUSINESS AND THE AGRICULTURAL ECONOMICS PROFESSION: RESEARCH AGENDAS IN AGRIBUSINESS
Creators: name: Litzenberg, Kerry K.
name: Litzenberg, Kerry K.
Publisher: name: Unknown
Year: 1992
Subjects: Agribusiness
Research and Development/Tech Change/Emerging Technologies

description: This paper presents a summary of work by various groups on the potential for agribusiness research by agricultural economists over the past decade. Methodology to establish research priorities in agribusiness are reviewed. This review leads to a consideration of the agribusiness research issues including: funding sources, identifying users of agribusiness research, data needs, and limitations of agribusiness research programs. The final part of the paper presents a potpourri of suggested research initiatives in agribusiness research for agricultural economists. Research in these areas may be difficult for a number of reasons including: decreased reliance on economic theory as the sole paradigm, providing competitive advantage to a single agribusiness firm while balancing public and private needs and funding sources, and data confidentiality. Suggestions for outlets for academic research are presented.
The identification of conformal hypercomplex and quaternionic manifolds
Creators: name: Bergshoeff, Eric
name: Vandoren, Stefan
name: Van Proeyen, Antoine
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We review the map between hypercomplex manifolds that admit a closed homothetic Killing vector (i.e. `conformal hypercomplex' manifolds) and quaternionic manifolds of 1 dimension less. This map is related to a method for constructing supergravity theories using superconformal techniques. An explicit relation between the structure of these manifolds is presented, including curvatures and symmetries. An important role is played by `ξtransformations', relating connections on quaternionic manifolds, and a new type `\hatξtransformations' relating complex structures on conformal hypercomplex manifolds. In this map, the subclass of conformal hyper-Kaehler manifolds is mapped to quaternionic-Kaehler manifolds.
description: 22 pages, 2 figures, Contribution to the proceedings volume for the Conference "Symmetry in Geometry and Physics" in honour of Dmitri Alekseevsky, September 2005
Modeling the diffusive dynamics of critical fluctuations near the QCD critical point
Creators: name: Nahrgang, Marlene
name: Bluhm, Marcus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The experimental search for the QCD critical point by means of relativistic heavy-ion collisions necessitates the development of dynamical models of fluctuations. In this work we study the fluctuations of the net-baryon density near the critical point. Due to net-baryon number conservation the correct dynamics is given by the fluid dynamical diffusion equation, which we extend by a white noise stochastic term to include intrinsic fluctuations. We quantify finite resolution and finite size effects by comparing our numerical results to analytic expectations for the structure factor and the equal-time correlation function. In small systems the net-baryon number conservation turns out to be quantitatively and qualitatively important, as it introduces anticorrelations at larger distances. Including nonlinear coupling terms in the form of a Ginzburg-Landau free energy functional we observe non-Gaussian fluctuations quantified by the excess kurtosis. We study the dynamical properties of the system close to equilibrium, for a sudden quench in temperature and a Hubble-like temperature evolution. In the real-time dynamical systems we find the important dynamical effects of critical slowing down, weakening of the extremal value and retardation of the fluctuation signal. In this work we establish a set of general tests, which should be met by any model propagating fluctuations, including upcoming $3+1$ dimensional fluctuating fluid dynamics.
Additional file 5 of An observational field study of the cloacal microbiota in adult laying hens with and without access to an outdoor range
Creators: name: Schreuder, Janneke
name: Velkers, Francisca C.
name: Bouwstra, Ruth J.
name: Beerens, Nancy
name: J. Arjan Stegeman
name: Boer, Willem F. De
name: P. Van Hooft
name: Elbers, Armin R. W.
name: Bossers, Alex
name: Jurburg, Stephanie D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 5: Figure S3. Distance-based redundancy analysis (RDA) using the following model: y = Housing Type + Housing Type:Poultry House. This parsimonious model explained 31.8% of the variation (R2). Circles represent individual chickens. Colors indicate which poultry house the chickens originated from.
Additional file 6 of An observational field study of the cloacal microbiota in adult laying hens with and without access to an outdoor range
Creators: name: Schreuder, Janneke
name: Velkers, Francisca C.
name: Bouwstra, Ruth J.
name: Beerens, Nancy
name: J. Arjan Stegeman
name: Boer, Willem F. De
name: P. Van Hooft
name: Elbers, Armin R. W.
name: Bossers, Alex
name: Jurburg, Stephanie D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 6: Figure S4. Pairwise Bray-Curtis dissimilarities between the cloacal microbiota of layers from each housing type, excluding within poultry house comparisons. Greater values indicate higher dissimilarity. The ‘total’ box contains all possible pairwise comparisons, for reference. Community composition between indoor-layers was more variable than between outdoor-layers (Wilcoxon-Rank-Sum test, p = 0.002)
Electromagnetic Probes of Strongly Interacting Matter: Probes of Chiral Symmetry Restoration?
Creators: name: Thomas, R.
name: Gallmeister, K.
name: Zschocke, S.
name: Kampfer, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The QCD sum rule approach to in-medium modifications of the omega meson in nuclear matter is reviewed with emphasis of its relation to 4-quark condensates and chiral symmetry restoration. Possible implications of the CB-TAPS experiment for the reaction gamma A -> A' omega (-> pi0 gamma) are sketched and the particularly important role of di-electron probes, accessible with HADES, is highlighted. A brief update of a parametrization of the previous dilepton and photon probes from CERES and WA98 of heavy-ion collisions at CERN-SPS energies is presented.
description: Contribution to Workshop on In-Medium Hadron Physics, Giessen, Nov. 11-13; 11 pages
ANALYSIS OF SOIL FERTILITY TESTING PROCEDURES USING UNIFORM, TOPOGRAPHICAL AND OTHER SITE-SPECIFIC METHODS
Creators: name: Haugen, Ronald H.
name: Aakre, Dwight G.
name: Haugen, Ronald H.
name: Aakre, Dwight G.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Land Economics/Use
subject: fertility
subject: topography
subject: soil testing
subject: site-specific
subject: North Dakota

description: This study summarizes an analysis of uniform, topographical and other site-specific soil fertility testing procedures based on observations of various crops at various locations in North Dakota and one location in Minnesota for 2001 through 2004. Results showed little difference in economic returns among the soil fertility testing methods by crop or location.
The Current Flows in Pulsar Magnetospheres
Creators: name: Xu, Ren-Xin
name: Cui, Xiao-Hong
name: Qiao, Guo-Jun
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The global structure of the current flows in pulsar magnetospheres is investigated, with rough calculations of the elements in the magnetospheric circuit. It is emphasized that the potential of critical field lines is the same as that of interstellar medium, and that the pulsars whose rotation axes and magnetic dipole axes are parallel should be positively charged, in order to close the pulsar's current flows. The statistical relation between the radio luminosity and pulsar's electric charge (or the spindown power) may hint that the millisecond pulsars could be low-mass bare strange stars.
description: 10 pages, 4 figures
Additional file 1 of The costs of delivering emergency care at regional referral hospitals in Uganda: a micro-costing study
Creators: name: Werner, Kalin
name: Lin, Tracy Kuo
name: Risko, Nicholas
name: Osiro, Martha
name: Kalanzi, Joseph
name: Wallis, Lee
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Supplementary Table 1. Treatment processes for five sentinel conditions.
Cannonballs in the context of Gamma Ray Bursts: Formation sites ?
Creators: name: Staff, Jan E.
name: Fendt, Christian
name: Ouyed, Rachid
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate possible formation sites of the cannonballs (in the gamma ray bursts context) by calculating their physical parameters, such as density, magnetic field and temperature close to the origin. Our results favor scenarios where the cannonballs form as instabilities (knots) within magnetized jets from hyperaccreting disks. These instabilities would most likely set in beyond the light cylinder where flow velocity with Lorentz factors as high as 2000 can be achieved. Our findings challenge the cannonball model of gamma ray bursts if these indeed form inside core-collapse supernovae (SNe) as suggested in the literature; unless hyperaccreting disks and the corresponding jets are common occurrences in core-collapse SNe.
description: 10 pages, 12 figures
Andeberhan, Weldetensae: Commentarii Etiopici sul Libro del Profeta Osea
Creators: name: Kropp, Manfred
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 87 (2003): Oriens christianus, Band 87
Gravitational baryogenesis in Gauss-Bonnet braneworld cosmology
Creators: name: Bento, M. C.
name: Felipe, R. Gonzalez
name: Santos, N. M. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The mechanism of gravitational baryogenesis, based on the CPT-violating gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current, is investigated in the context of the Gauss-Bonnet braneworld cosmology. We study the constraints on the fundamental five-dimensional gravity scale, the effective scale of B-violation and the decoupling temperature, for the above mechanism to generate an acceptable baryon asymmetry during the radiation-dominated era. The scenario of gravitational leptogenesis, where the lepton-number violating interactions are associated with the neutrino mass seesaw operator, is also considered.
description: 8 pages, 3 figures, final version to appear in Phys. Rev. D
LOGISTICAL COSTS AND RISKS OF MARKETING GENETICALLY MODIFIED WHEAT
Creators: name: Schlecht, Shannon M.
name: Wilson, William W.
name: Dahl, Bruce L.
name: Schlecht, Shannon M.
name: Wilson, William W.
name: Dahl, Bruce L.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Genetically Modified (GM) Grains
subject: Logistical Costs
subject: Testing
subject: Risk
subject: Segregation

description: Genetically modified (GM) grains have increased in importance. Moving biotech grains from producers to processors is a challenge for the grain handling system that could involve increased segregations. The objective of this research is to determine how testing strategies affect the logistical costs of a grain pipeline when GM wheat is present. A logistical model was developed and simulated to analyze impacts of uncertainty in demand, receipts, test accuracy, rail deliveries, and transit time. Sensitivities were conducted on certain variables to determine their effects on logistical costs. Analysis revealed that logistical costs are impacted by the number of quality categories and uncertainties in the system. Adding GM grains increased costs due to testing requirements and increased segregation demands as the number of wheat categories rises.
Competition and coordination in supply chains
Creators: name: Li, Qing
Publisher: name: University of British Columbia
Year: 2009

description: The dissertation consists of three independent essays. Essay 1 examines the coordination issues in a supply chain whose members are Production and Marketing of the same firm. Replenishment and pricing strategies are determined by Production and Marketing, respectively. Simple performance measure such as setting a linear transfer price between these two functions in general leads to misaligned incentives. We compare two games, which differ in whether Production commits to a level of inventory or a level of service to Marketing. Although these two forms of commitment from Production are equivalent operationally in the integrated system, they lead to different strategic behaviors. We propose a mechanism that aligns the functional managers' incentives to be compatible to the firm. We further investigate the value of perfect demand information of these two games and the integrated system, and study Stackelberg games to address situations where either Marketing or Production is the dominant function. Essay 2 studies the effect of uncertainty on the expected profit and operating cost in the same setting as Essay 1, but further considers the situation where the pricing decision can be postponed until randomness in the demand function is realized. We show that the impact of uncertainty on the operating cost cannot be used to predict the direction and magnitude of the impact on the expected profit, unlike in a price-taking firm. Also in contrast to models ignoring pricing, the essay shows that a better-coordinated system does not necessarily have a lower operating cost. Essay 3 studies capacity allocation games in a fashion (style) goods setting. When production capacity is in limited supply, allocation schemes are typically employed to ration capacity among distinct product lines. The sale and distribution of the product lines are often managed on a decentralized basis through independent units, which we call retailers. Retailers will accordingly order in a way that suits the specific capacity allocation scheme employed. The essay studies the consequent capacity allocation game in a fashion goods supply chain setting. We discuss the adverse consequence of each scheme and strategic implication of capacity flexibility. We also show that increasing capacity may intensify the competition between retailers.
The Higgs field and early universe cosmology: a (brief) review
Creators: name: Horn, Bart
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review and discuss recent work exploring the implications of the Higgs field for early universe cosmology, and vice versa. Depending on the model under consideration the Higgs may be one of a few scalar fields determining the evolution and fate of the Universe, or the Higgs field may be connected to a rich sector of scalar moduli with complicated dynamics. In particular we look at the potential consequences of the Higgs field for inflation and its predictions, for the (meta)stability of the Standard Model vacuum, and for the existence of dynamical selection mechanisms in the landscape.
description: 25 pages, no figures
Nondifractive Propagation of Light in Photonic Crystals
Creators: name: Staliunas, K.
name: Herrero, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that diffraction of electromagnetic radiation (in particular of a visible light) can disappear in propagation through materials with periodically in space modulated refraction index, i.e. photonic crystals. In this way the light beams of arbitrary width can propagate without diffractive broadening and, equivalently, arbitrary light patterns can propagate without diffractive smearing.
POTENTIAL CORN ACREAGE EXPANSION FOR ETHANOL PRODUCTION: WESTERN NORTH DAKOTA--MINOT
Creators: name: Gustafson, Cole R.
name: Gustafson, Cole R.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Crop Production/Industries
subject: Resource /Energy Economics and Policy
subject: Ethanol
subject: corn supply
subject: response

description: Several recent developments have stimulated farmers' interest in raising corn for ethanol production in northwestern North Dakota. The purpose of this study is to estimate the corn supply response of western North Dakota farmers for ethanol production. Two focus groups of western North Dakota farmers (Williston and Minot) were organized. The market premium over prevailing local corn prices that was required by western North Dakota farms to entice additional production of an ethanol specific hybrid was determined. Aggregation of these farm responses yielded a supply function of corn for the region. Results show that sufficient corn can be produced in the surrounding region to support a 12 million gallon ethanol facility if modest price premiums are provided. The availability of short-season hybrids adapted specifically to the region may constrain expansion.
2004 OUTLOOK OF THE U.S. AND WORLD WHEAT INDUSTRIES, 2003-2013
Creators: name: Koo, Won W.
name: Taylor, Richard D.
name: Koo, Won W.
name: Taylor, Richard D.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: common wheat
subject: durum wheat
subject: production
subject: exports
subject: consumption
subject: ending stocks

description: This report evaluates the U.S. and world wheat markets for the 2003-2013 period using the Global Wheat Policy Simulation Model. This analysis is based on a series of assumptions about general economic conditions, agricultural policies, weather conditions, and technological change. Both the U.S. and world wheat economies are predicted to improve for the next 10 years. World demand for both common and durum wheat are expected to grow faster than world production, resulting in gradual increases in prices of the wheat varieties. However, the higher price levels experienced in 2002 and 2003 due to weather conditions will not be maintained in the short-term. World trade volumes of both classes of wheat are expected to expand, but trade volume of durum wheat may grow faster than that of common wheat.
U(1) gauge field theory on kappa-Minkowski space
Creators: name: Dimitrijevic, Marija
name: Jonke, Larisa
name: Möller, Lutz
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This study of U(1) gauge field theory on the kappa-deformed Minkowski spacetime extends previous work on gauge field theories on this type of noncommutative spacetime. We discuss in detail the properties of the Seiberg-Witten map and the resulting effective action for U(1) gauge theory with fermionic matter expanded in ordinary fields. We construct the conserved gauge current, fix part of the ambiguities in the Seiberg-Witten map and obtain an effective U(1) action invariant under the action of the undeformed Poincare group.
description: 13 pages, v2, two comments added and references updated, final version