cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Earnings Effects of Household Investment in Health in Colombia
Creators: name: Ribero, Rocio
name: Ribero, Rocio
Publisher: name: Unknown
Year: 1999
Subjects: subject: Consumer/Household Economics
subject: Health Economics and Policy
subject: earnings
subject: height
subject: health indicators

description: This study considers the links between primary indicators of health and individual labor productivity in Colombia and explores how additional public expenditures on health may improve individuals' health. Sample statistics show that illness occurs more frequently for women than for men, for less educated than for more educated, for rural than urban residents, and for older individuals. The well educated are considerably taller than those without schooling (6 cm. for males and 4 cm. for females). The empirical evidence confirms that health indicators are related to individual earnings in Colombia. A Mincerian log-earnings equation that includes health indicators as a form of human capital in addition to schooling is specified. When the morbidity variable is treated as endogenous and measured with error and the model is estimated by instrumental variables [IV], it becomes significant and has the expected negative sign. Controlling for age, education, sector of employment, gender and geographic location, an increase by 50% on the average number of days an individual was ill and unable to do his ordinary activities in the last month would imply reductions in labor earnings of 11% for urban males, 8% for urban females, 13% for rural males and 7% for rural females. The estimations with height show a positive sign and high significance even without the IV correction, but the coefficients increased with IV methods by an order of magnitude. Having one more centimeter of stature would increase urban female earnings by 4.7% and urban male earnings by 12%. Individual's wealth and living in a community with better health provision indicators are linked with better health outcomes. An analysis of the returns to schooling shows that schooling captures part of the effect of health on productivity when the health indicator is not included in the Mincer equation.
Veto Studies for LIGO Inspiral Triggers
Creators: name: Christensen, Nelson
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: LIGO recently conducted its third scientific data run, S3. Here we summarize the veto and data quality studies conducted by the LIGO Scientific Collaboration in connection with the search for binary inspiral signals in the S3 data. LIGO's interferometer channels and physical environmental monitors were monitored, and events in these channels coincident with inspiral triggers were examined.
description: Submitted to Classical and Quantum Gravity for the special issue for presentations at GWDAW 9
CHANGES IN SELECTED CHARACTERISTICS OF U.S. FARMS DURING THE 1970s AND EARLY 1980s: AN INVESTIGATION BASED ON CURRENT AND CONSTANT DOLLAR SALES CATEGORIES
Creators: name: Zulauf, Carl R.
name: Zulauf, Carl R.
Publisher: name: Unknown
Year: 1986
Subjects: Agribusiness

description: Changes since 1970 in the distribution of selected farm characteristics among constant and current dollar farm sales categories were examined. In general, the same trends emerged but changes were less dramatic after adjusting for inflation. The increasing concentration of net farm income among farms with sales exceeding $500,000 was attributed in part to their continuing high ratio of gross farm income to expenses (approximately 145 percent). Farms with sales between $10,000 and $500,000 became more dependent on nonfarm income. This dependency is postulated to result from a farm income treadmill and use of nonfarm income to cope with the treadmill.
Dynamics of opinion formation in a small-world network
Creators: name: Li, Ping-Ping
name: Zheng, Da-Fang
name: Hui, P. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The dynamical process of opinion formation within a model using a local majority opinion updating rule is studied numerically in networks with the small-world geometrical property. The network is one in which shortcuts are added to randomly chosen pairs of nodes in an underlying regular lattice. The presence of a small number of shortcuts is found to shorten the time to reach a consensus significantly. The effects of having shortcuts in a lattice of fixed spatial dimension are shown to be analogous to that of increasing the spatial dimension in regular lattices. The shortening of the consensus time is shown to be related to the shortening of the mean shortest path as shortcuts are added. Results can also be translated into that of the dynamics of a spin system in a small-world network.
description: 10 pages, 5 figures
Probing dark matter with X-ray binaries
Creators: name: Dehnen, Walter
name: King, Andrew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Low-mass X-ray binaries (LMXBs), which occur in old stellar populations, have velocities exceeding those of their parent distribution by at least 20 km/s. This makes them ideal probes for dark matter, in particular in dwarf spheroidals (dSph), where the LMXBs should penetrate well outside the visible galaxy. We argue that the most likely explanation of the observation of LMXBs in the Sculptor dSph by Maccarone et al (2005) is the presence of a dark matter halo of >~ 10^9 Msun, corresponding to a total-mass to light ratio of >~ 600 (M/L_V)_sun. In this case there should be an extended halo of LMXBs which may be observable.
description: 3 pages, accepted for publication in MNRAS
K -> pi gamma decays and space-time noncommutativity
Creators: name: Melic, B.
name: Passek-Kumericki, K.
name: Trampetic, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose the K -> pi gamma decay mode as a signature of the violation of the Lorentz invariance and the appearance of new physics via space-time noncommutativity.
description: 3 pages, 1 figure included, version to appear in Phys. Rev. D
Perturbative approach to the structure of rapidly rotating neutron stars
Creators: name: Benhar, Omar
name: Ferrari, Valeria
name: Gualtieri, Leonardo
name: Marassi, Stefania
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct models of rotating stars using the perturbative approach introduced by J. Hartle in 1967, and a set of equations of state proposed to model hadronic interactions in the inner core of neutron stars. We integrate the equations of stellar structure to third order in the angular velocity and show, comparing our results to those obtained with fully non linear codes, to what extent third order corrections are needed to accurately reproduce the moment of inertia of a star which rotates at rates comparable to that of the fastest isolated pulsars.
description: 17 pages, 5 figures, minor changes to match version accepted by Phys. Rev. D
Model-independent determination of the Migdal effect via photoabsorption
Creators: name: Liu, C. -P.
name: Wu, Chih-Pan
name: Chi, Hsin-Chang
name: Chen, Jiunn-Wei
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: The Migdal effect in a dark-matter-nucleus scattering extends the direct search experiments to the sub-GeV mass region through electron ionization with sub-keV detection thresholds. In this paper, we derive a rigorous and model-independent "Migdal-photoabsorption" relation that links the sub-keV Migdal process to photoabsorption. This relation is free of theoretical uncertainties as it only requires the photoabsorption cross section as the experimental input. Validity of this relation is explicitly checked in the case of xenon with an state-of-the-arts atomic calculation that is well-benchmarked by experiments. The predictions based on this relation for xenon, argon, semiconductor silicon and germanium detectors are presented and discussed.
description: 6 pages, 3 figures
Cosmological Models in the Generalized Einstein Action
Creators: name: Arbab, Arbab I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have studied the evolution of the Universe in the generalized Einstein action of the form $R+βR^2$, where $R$ is the scalar curvature and $β=\rm const.$. We have found exact cosmological solutions that predict the present cosmic acceleration. These models also allow an inflationary de-Sitter era occurring in the early Universe. The cosmological constant ($Λ$) is found to decay with the Hubble constant ($H$) as, $Λ\propto H^4$. In this scenario the cosmological constant varies quadratically with the energy density ($ρ$), i.e., $Λ\propto ρ^2$. Such a variation is found to describe a two-component cosmic fluid in the Universe. One of the component accelerated the Universe in the early era, and the other in the present era. The scale factor of the Universe varies as $a\sim t^{n}$, $n=1/2$ in the radiation era. The cosmological constant vanishes when $n=4/3$ and $n=1/2$. We have found that the inclusion of the term $R^2$ mimics a cosmic matter that could substitute the ordinary matter.
description: 14 Latex pages, no figures
Freyastera tuberculata
Creators: name: Zhang, Ruiyan
name: Zhou, Yadong
name: Mao, Jingwen
name: Wang, Chunsheng
name: Zhang, Dongsheng
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Brisingida
Freyellidae
Freyastera
Freyastera tuberculata

description: Freyastera cf. tuberculata
Freyastera cf. tuberculata: Bribiesca-Contreras et al. 2022: 42.
Freyastera cf. benthophila: Glover et al. 2016: 17; Amon et al. 2017: 9; GenBank (NHM _413: KU 519535; KU 519518; KU 519550; KU 519551).
Material examined.
NHMUK 2022.79 (CCZ_087); NHMUK 2022.80 (CCZ_157); NHMUK 9120; NHM_413; SO 268-1_64_074. (Suppl. material 1).
Distribution.
Eastern Pacific: Clarion-Clipperton Zone. 4011–5000 m.
description: Published as part of Zhang, Ruiyan, Zhou, Yadong, Mao, Jingwen, Wang, Chunsheng & Zhang, Dongsheng, 2025, Hidden diversity of Freyastera (Asteroidea, Brisingida, Freyellidae) at great depth: Description of new species and remarks on species boundaries, pp. 735-760 in Zoosystematics and Evolution 101 (2) on pages 735-760, DOI: 10.3897/zse.101.144918
Ultrafast light-induced shear strain probed by time-resolved X-ray diffraction: the model multiferroic BiFeO$_3$ as a case study
Creators: name: Juvé, V.
name: Gu, R.
name: Gable, S.
name: Maroutian, T.
name: Vaudel, G.
name: Matzen, S.
name: Chigarev, N.
name: Raetz, S.
name: Gusev, V. E.
name: Viret, M.
name: Jarnac, A.
name: Laulhé, C.
name: Maznev, A.
name: Dkhil, B.
name: Ruello, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Enabling the light-control of complex systems on ultra-short timescales gives rise to rich physics with promising applications. While crucial, the quantitative determination of both the longitudinal and shear photo-induced strains still remains challenging. Here, by scrutinizing asymmetric Bragg peaks pairs $(\pm h01)$ using picosecond time-resolved X-ray diffraction experiments in BiFeO$_3$, we simultaneously determine the longitudinal and shear strains. The relative amplitude of those strains can be explained only if both thermal and non-thermal processes contribute to the acoustic phonon photogeneration process. Importantly, we also reveal a difference of the dynamical response of the longitudinal strain with respect to the shear one due to an interplay of quasi-longitudinal and quasi-transverse acoustic modes, well reproduced by our model.
MALOnt: An Ontology for Malware Threat Intelligence
Creators: name: Rastogi, Nidhi
name: Dutta, Sharmishtha
name: Zaki, Mohammed J.
name: Gittens, Alex
name: Aggarwal, Charu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Malware threat intelligence uncovers deep information about malware, threat actors, and their tactics, Indicators of Compromise(IoC), and vulnerabilities in different platforms from scattered threat sources. This collective information can guide decision making in cyber defense applications utilized by security operation centers(SoCs). In this paper, we introduce an open-source malware ontology - MALOnt that allows the structured extraction of information and knowledge graph generation, especially for threat intelligence. The knowledge graph that uses MALOnt is instantiated from a corpus comprising hundreds of annotated malware threat reports. The knowledge graph enables the analysis, detection, classification, and attribution of cyber threats caused by malware. We also demonstrate the annotation process using MALOnt on exemplar threat intelligence reports. A work in progress, this research is part of a larger effort towards auto-generation of knowledge graphs (KGs)for gathering malware threat intelligence from heterogeneous online resources.
Diffusion coefficient of a passive contaminant in a local MHD model of a turbulent accretion disc
Creators: name: Carballido, Augusto
name: Stone, James M.
name: Pringle, James E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the radial diffusion coefficient for a passive contaminant in an accretion disc which is turbulent due to the action of the magnetorotational instability. Numerical MHD simulations are used to follow the evolution of a local patch of the disc using the shearing box formalism. A separate continuity equation for the mass fraction of contaminant is integrated along with the MHD system, and radial profiles of this fraction are obtained as a function of time. Solutions of a linear diffusion equation are fitted to the numerical measured profiles of the contaminant, treating the diffusion coefficient D as the fitting parameter. At early times, the value of D is found to vary, however once the contaminant is spread over scales comparable to the box size, it saturates at a steady value. The ratio of D to the transport coefficient of angular momentum due to shear stress is small. If D can be used as a proxy for the turbulent magnetic diffusivity, the effective magnetic Prandtl number P_eff=ν/D (where νis the coefficient of "efective viscosity" associated with shear stress) would be large.
description: 7 pages, 4 figures, to be published in MNRAS
Crossed Andreev reflection-induced magnetoresistance
Creators: name: Giazotto, F.
name: Taddei, F.
name: Fazio, R.
name: Beltram, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that very large negative magnetoresistance can be obtained in magnetic trilayers in a current-in-plane geometry owing to the existence of crossed Andreev reflection. This spin-valve consists of a thin superconducting film sandwiched between two ferromagnetic layers whose magnetization is allowed to be either parallelly or antiparallelly aligned. For a suitable choice of structure parameters and nearly fully spin-polarized ferromagnets the magnetoresistance can exceed -80%. Our results are relevant for the design and implementation of spintronic devices exploiting ferromagnet-superconductor structures.
description: 5 pages, 4 figures, final published version
Beyond a pale blue dot : how to search for possible bio-signatures on earth-like planets
Creators: name: Suto, Yasushi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Earth viewed from outside the Solar system would be identified merely like a pale blue dot, as coined by Carl Sagan. In order to detect possible signatures of the presence of life on a second earth among several terrestrial planets discovered in a habit-able zone, one has to develop and establish a methodology to characterize the planet as something beyond a mere pale blue dot. We pay particular attention to the periodic change of the color of the dot according to the rotation of the planet. Because of the large-scale inhomogeneous distribution of the planetary surface, the reflected light of the dot comprises different color components corresponding to land, ocean, ice, and cloud that cover the surface of the planet. If we decompose the color of the dot into several principle components, in turn, one can identify the presence of the different surface components. Furthermore, the vegetation on the earth is known to share a remarkable reflection signature; the reflection becomes significantly enhanced at wave-lengths longer than 760nm, which is known as a red-edge of the vegetation. If one can identify the corresponding color signature in a pale blue dot, it can be used as a unique probe of the presence of life. I will describe the feasibility of the methodology for future space missions, and consider the direction towards astrobiology from an astrophysicist's point of view.
description: 11 pages, 5 figures, published in Yamagishi A., Kakegawa T., Usui T. (eds) Astrobiology. Springer, Singapore (2019)
Emergent physics on vacuum energy and cosmological constant
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The phenomenon of emergent physics in condensed-matter many-body systems has become the paradigm of modern physics, and can probably also be applied to high-energy physics and cosmology. This encouraging fact comes from the universal properties of the ground state (the analog of the quantum vacuum) in fermionic many-body systems, described in terms of the momentum-space topology. In one of the two generic universality classes of fermionic quantum vacua the gauge fields, chiral fermions, Lorentz invariance, gravity, relativistic spin, and other features of the Standard Model gradually emerge at low energy. The condensed-matter experience provides us with some criteria for selecting the proper theories in particle physics and gravity, and even suggests specific solutions to different fundamental problems. In particular, it provides us with a plausible mechanism for the solution of the cosmological constant problem, which I will discuss in some detail.
description: prepared for Proceedings of LT-24, minor corrections after referee report, oral presentation is in http://ltl.tkk.fi/personnel/THEORY/volovik.html
I-mode pedestal relaxation events at ASDEX Upgrade
Creators: name: Silvagni, D.
name: Eich, T.
name: Happel, T.
name: Harrer, G. F.
name: Griener, M.
name: Dunne, M.
name: Cavedon, M.
name: Faitsch, M.
name: Gil, L.
name: Nille, D.
name: Tal, B.
name: Fischer, R.
name: Stroth, U.
name: Brida, D.
name: David, P.
name: Manz, P.
name: Viezzer, E.
name: team, the ASDEX Upgrade
name: team, the EUROfusion MST1
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The I-mode confinement regime can feature small edge temperature drops that can lead to an increase in the energy deposited onto the divertor targets. In this work, we show that these events are associated with a relaxation of both electron temperature and density edge profiles, with the largest drop found at the pedestal top position. Stability analysis of edge profiles reveals that the operational points are far from the ideal peeling-ballooning boundary. Also, we show that these events appear close to the H-mode transition in the typical I-mode operational space in ASDEX Upgrade, and that no further enhancement of energy confinement is found when they occur. Moreover, scrape-off layer transport during these events is found to be very similar to type-I ELMs, with regard to timescales ($\approx$ 800 $μ$s), filament propagation, toroidally asymmetric energy effluxes at the midplane and asymmetry between inner and outer divertor deposited energy. In particular, the latter reveals that more energy reaches the outer divertor target. Lastly, first measurements of the divertor peak energy fluence are reported, and projections to ARC - a reactor designed to operate in I-mode - are drawn.
بررسی سیطره جنسیت بر زندگی اجتماعی تبدیل خواهان جنسی
Creators: name: Tavassoli, Afsaneh
name: Emami, Fatemeh
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: تبدیل خواهی جنسی اختلالی در هویت جنسی به شمار می رود. تبدیل خواهان جنسی خود را به گروه جنس مخالف متعلق می دانند،از وضعیت جنسی - بدنی خود راضی نیستند و می کوشند تا با استفاده از هورمون ها و عمل های جراحی خود را به وضعیت دلخواه نز دیک کنند. هدف این مقاله "بررسی ابعاد سیطره جنسیت بر زندگی تبدیل خواهان "جنسی است.
Fixing E-field divergence in strongly nonlinear wakefields in homogeneous plasma
Creators: name: Reichwein, Lars
name: Thomas, Johannes
name: Golovanov, Anton
name: Kostyukov, Igor Yu.
name: Pukhov, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Available analytical wakefield models for the bubble and the blow-out regime of electron-plasma acceleration perfectly describe important features like shape, fields, trapping ratio, achievable energy, energy distribution and radial emittance. As we show, for wakefields with an extremely small amplitude these models fail to describe the accelerating electric field and its divergence in the wakefield rear. Since prominent parameter regimes like the Trojan horse regime of photocathode injection exhibit this feature, it is of great importance to work out analytical models that fix this problem; one possible model is introduced in this work. Using a phenomenological theory, we are able to better describe the divergence of the electric field and the bubble shape.
A doorway to Borromean halo nuclei: the Samba configuration
Creators: name: Yamashita, M. T.
name: Frederico, T.
name: Hussein, M. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We exploit the possibility of new configurations in three-body halo nuclei - Samba type - (the neutron-core form a bound system) as a doorway to Borromean systems. The nuclei $^{12}$Be, $^{15}$B, $^{23}$N and $^{27}$F are of such nature, in particular $^{23}$N with a half-life of 37.7 s and a halo radius of 6.07 fm is an excellent example of Samba-halo configuration. The fusion below the barrier of the Samba halo nuclei with heavy targets could reveal the so far elusive enhancement and a dominance of one-neutron over two-neutron transfers, in contrast to what was found recently for the Borromean halo nucleus $^6$He + $^{238}$U.
description: Accepted for publication in Modern Physics Letters A
Collective non-Abelian instabilities in a melting Color Glass Condensate
Creators: name: Romatschke, Paul
name: Venugopalan, Raju
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present first results for 3+1-D simulations of SU(2) Yang-Mills equations for matter expanding into the vacuum after a heavy ion collision. Violations of boost invariance cause a Weibel instability leading soft modes to grow with proper time $τ$ as $\exp(Γ\sqrt{g^2μτ})$, where $g^2μ$ is a scale arising from the saturation of gluons in the nuclear wavefunction. The scale for the growth rate $Γ$ is set by a plasmon mass, defined as $ω_{\rm pl}= κ_0 \sqrt{\frac{g^2μ}τ}$, generated dynamically in the collision. We compare the numerical ratio $Γ/κ_0$ to the corresponding value predicted by the Hard Thermal Loop formalism for anisotropic plasmas.
description: 4 pages, 4 figures, revtex4; v2: typos corrected, discussion on growth rate in expanding system added, accepted for publication in PRL
Chemical Evolution in Hierarchical Models Of Cosmic Structure I: Constraints on the Early Stellar Initial Mass Function
Creators: name: Tumlinson, Jason
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I present a new Galactic chemical evolution model motivated by and grounded in the hierarchical theory of galaxy formation, as expressed by a halo merger history of the Galaxy. This model accurately reproduces the "metallicity distribution function" (MDF) for Population II stars residing today in the Galactic halo. The observed MDF and the apparent absence of true Population III stars from the halo strongly imply that there is some critical metallicity, Z_crit = 8 - 42 Msun. This mass range is similar to the masses predicted by models of primordial star formation that account for formation feedback. The model also implies that metal-poor halo stars below [Fe/H]
description: Submitted to ApJ, 22 pages in emulate ApJ format, uncompressed figures available from http://astro.uchicago.edu/~tumlinso/fs.html
Co-tunneling current and shot noise in quantum dots
Creators: name: Thielmann, A.
name: Hettler, M. H.
name: König, J.
name: Schön, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive general expressions for the current and shot noise, taking into account non-Markovian memory effects. In generalization of previous approaches our theory is valid for arbitrary Coulomb interaction and coupling strength and is applicable to quantum dots and more complex systems like molecules. A diagrammatic expansion up to second-order in the coupling strength, taking into account co-tunneling processes, allows for a study of transport in a regime relevant to many experiments. As an example, we consider a single-level quantum dot, focusing on the Coulomb-blockade regime. We find super-Poissonian shot noise due to spin-flip co-tunneling processes at an energy scale different from the one expected from first-order calculations, with a sensitive dependence on the coupling strength.
description: 4 pages, three figures, submitted to PRL
Real-time thermal Schwinger-Dyson equation for quark self-energy in Landau gauge
Creators: name: Bang-Rong, Zhou
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By means of a formal expression of the Cornwall-Jackiw-Tomboulis effective potential for quark propagator at finite temperature and finite quark chemical potential, we derive the real-time thermal Schwinger-Dyson equation for quark propagator in Landau gauge. Denote the inverse quark propagator by $A(p^2)\not{p}-B(p^2)$, we argue that, when temperature $T$ is less than the given infrared momentum cutoff $p_c$, $A(p^2)=1$ is a feasible approximation and can be assumed in discussions of chiral symmetry phase transition problem in QCD.
description: 8 pages, Latex, no figure
A heatwave affair: mixed Higgs-$R^2$ preheating on the lattice
Creators: name: Bezrukov, Fedor
name: Shepherd, Chris
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use lattice methods to perform the first nonlinear study of preheating in $R^2$-healed Higgs inflation for "$R^2$-like" parameters $1.1\times 10^9$ and $1.8\times 10^9$ where the curvature-squared coupling $β$ and nonminimal coupling $ξ$ of the Higgs field contribute similarly to the CMB scalar perturbations. Preheating occurs first through tachyonic production of Higgs bosons, and later scattering off the homogeneous inflaton field. We generalise our results to "Higgs-like" parameters with smaller $β$, where observables saturate the bound of instantaneous preheating. All predictions for the spectral index and tensor-to-scalar ratio lie within the $1σ$ region of measurements by the Planck satellite, but a future ground-based experiment optimised for 21 cm tomography may be able to discriminate the mixed Higgs-curvature inflation from the pure Higgs and $R^2$ theories.
description: 21 pages 11 figures
Historical and contemporary development of the Chinese zheng
Creators: name: Han, Mei
Publisher: name: University of British Columbia
Year: 2009

description: The zheng is a plucked, half-tube Chinese zither with a history of over two and a half millennia. During this time, the zheng, as one of the principal Chinese instruments, was used in both ensemble and solo performances, playing an important role in Chinese music history. Throughout its history, the zheng underwent several major changes in terms of construction, performance practice, and musical style. Social changes, political policies, and Western musical influences also significantly affected the development of the instrument in the twentieth century; thus the zheng and its music have been brought to a new stage through forces of modernization and standardization. This thesis focuses mainly upon contemporary changes. Chapter One reviews zheng history before the 20th century, including its etymology, origin, construction, and music. The discussion is based upon historical documents, archaeological finds, and contemporary studies from both Chinese and non- Chinese sources. Through an examination of social, political, and cultural issues, Chapter Two examines the contribution of musicians who have facilitated the transition from traditional styles to modern interpretations of zheng music. Finally, Chapter Two also examines aspects of modernized instruments, such as the construction of the changeable-key zheng and the butterfly-shaped zheng, together with some new performance techniques and new compositions.
[Letter from Johan Nordal Fischer Wille]
Creators: name: Wille, Johan Nordal Fischer
Publisher: name: Unknown
Year: 1891
Subjects: Cramer, Carl Edouard
Cranner, Barthold Hansteen
Lagerheim, Nils Gustaf
Levi-Morenos (editor of Notarisia)

description: The reason you did not get the grant of kr. 300 to identify algae in Norwegian collections is that both Blytt and Schübeler wanted Hansteen because it would be cheaper as he lives in Kristiania. There is a lot of information in F. Bohn Über einige Algen von Helgoland.
A BIOTIC CONTROL PERSPECTIVE ON NITRATE CONTAMINATION OF GROUNDWATER FROM AGRICULTURAL PRODUCTION
Creators: name: Erickson, Jon D.
name: Schlapfer, Felix
name: Erickson, Jon D.
name: Schlapfer, Felix
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries

description: Agronomists consider the continuity and nutrient capturing properties of cover crops as important determinants of nutrient cycling in agricultural systems. Managing for these biotic control functions can help limit nutrient loss and groundwater contamination between main crop harvests. This simulation study highlights the potential role of cover crop management in a welfare economics framework. The objective is to find the optimal combination of nutrient input to the main crop, the extent of off-season cover crops, and crop functional diversity to maximize the sum of benefits from agricultural production and groundwater protection.
بررسی جامعه شناختی نگرش به مهریه در میان دانشجویان دانشگاه علامه طباطبایی
Creators: name: Tavassoli, Afsaneh
name: Fooladi, Leila
name: Amanolahi, Mina
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: خانواده كوچك ترين نهاد و گروه اجتماعي است كه زيربناي جامعه را تشكيل مي دهد. اساس خانواده، برقراري پيوند زناشويي بين زوجين، و پذيرش حقوق و تكاليف مترتب بر آن است. در رابطه با حقوق زن بعد از ازدواج، به دو نوع حق تأكيد شده است؛ حقوق ملا ي و غيرمالي. مهريه و نفقه از حقوق مالي مختص به زوجه هستند. مسئله اصلي اين مقاله، بررسي تأ ثير عوامل مختلفي مانند جنس، سن، تحصيلات، پايگاه اجتماعي و اقتصادي خانواده، اعتماد اجتماعي، عرف، پايبندي به ارزش هاي ديني، همسالان و رسانه هاي جمعي بر نگرش افراد درخصوص كاركرد مهريه و عوامل تعيين ميزان مهريه است .نمونة مورد مطالعه شامل 261 نفر از دانشجويان دانشگاه علامه طباطبايي بودند. روش مطالع ة اسنادي و پيمايشي و ابزار جمعآوري داده ها پرسشنامه بود. نتايج حاكي از آن است كه متغيرهاي اعتماد اجتماعي، عرف، تحصيلات، پايبندي به ارزش هاي ديني، پايگاه اجتماعي و اقتصادي خانواده، رسانه هاي جمعي، جنسيت، همسالان و سن 65 % از نگرش افراد درخصوص كاركردهاي مهريه را تبيين ميكنند كه از بين آن ها، متغير اعتماد اجتماعي بيش ترين سهم را داشته است. همچنين متغيرهاي ذكر شده 63 % از نگرش افراد درخصوص عوامل تعيين ميزان مهريه را تبيين ميكنند كه بين آن ها، متغير عرف بيش ترين سهمرا دارا است.
SOIL MANAGEMENT AND THE FARM TYPOLOGY: DO SMALL FAMILY FARMS MANAGE SOIL AND NUTRIENT RESOURCES DIFFERENTLY THAN LARGE FAMILY FARMS?
Creators: name: Soule, Meredith J.
name: Soule, Meredith J.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries

description: There is increasing recognition that farmers face constraints on their farming decisions depending on the their resources, stage in life, and lifestyle choices. These factors are captured in a new farm typology developed by the Economic Research Service. The farm typology's definition of small and large farms is used to test the commonly stated hypothesis that small farmers practice better land husbandry than do large farmers. The adoption of eleven different soil and nutrient management practices used by U.S. corn producers is analyzed with a bivariate logit model for each practice. The farm typology is found to be significantly associated with two of the practices - rotation with legumes and conservation tillage.
Neutron flux and spectrum in the Dresden Felsenkeller underground facility studied by moderated $^3$He counters
Creators: name: Grieger, M.
name: Hensel, T.
name: Agramunt, J.
name: Bemmerer, D.
name: Degering, D.
name: Dillmann, I.
name: Fraile, L. M.
name: Jordan, D.
name: Köster, U.
name: Marta, M.
name: Müller, S. E.
name: Szücs, T.
name: Taín, J. L.
name: Zuber, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Ambient neutrons may cause significant background for underground experiments. Therefore, it is necessary to investigate their flux and energy spectrum in order to devise a proper shielding. Here, two sets of altogether ten moderated $^3$He neutron counters are used for a detailed study of the ambient neutron background in tunnel IV of the Felsenkeller facility, underground below 45 meters of rock in Dresden/Germany. One of the moderators is lined with lead and thus sensitive to neutrons of energies higher than 10 MeV. For each $^3$He counter-moderator assembly, the energy dependent neutron sensitivity was calculated with the FLUKA code. The count rates of the ten detectors were then fitted with the MAXED and GRAVEL packages. As a result, both the neutron energy spectrum from 10$^{-9}$ MeV to 300 MeV and the flux integrated over the same energy range were determined experimentally. The data show that at a given depth, both the flux and the spectrum vary significantly depending on local conditions. Energy integrated fluxes of $(0.61 \pm 0.05)$, $(1.96 \pm 0.15)$, and $(4.6 \pm 0.4) \times 10^{-4}$ cm$^{-2}$ s$^{-1}$, respectively, are measured for three sites within Felsenkeller tunnel IV which have similar muon flux but different shielding wall configurations. The integrated neutron flux data and the obtained spectra for the three sites are matched reasonably well by FLUKA Monte Carlo calculations that are based on the known muon flux and composition of the measurement room walls.
description: 10 figures, 4 tables; to be published in Phys. Rev. D
PREMIUMS/DISCOUNTS AND PREDICTIVE ABILITY OF THE SHRIMP FUTURES MARKET
Creators: name: Martinez-Garmendia, Josue
name: Anderson, James L.
name: Martinez-Garmendia, Josue
name: Anderson, James L.
Publisher: name: Unknown
Year: 2001
Subjects: Agribusiness

description: Seafood futures contracts are a novelty in the derivative markets, having shrimp as their only exponent. Unfortunately, shrimp futures contracts have suffered a disappointing start. The analyses focus on testing whether premiums/discounts for non-par deliverable shrimp size categories can eliminate cash price differentials, and whether the shrimp futures market can predict cash prices without bias. Results indicate ineffective premiums/discounts and predictive bias. These results and the momentous changes taking place in the seafood industry are contrasted to discuss the viability of seafood futures contracts.
title: Design and Implementation of the Solar Field and Thermal Storage System Controllers for a Parabolic Trough Solar Power Plant
Creators: name: Al-Maliki, Wisam Abed Kattea
name: Mahmoud, Nabeel Sameer
name: Al-Khafaji, Hussein M. H.
name: Alobaid, Falah
name: Epple, Bernd
Publisher: name: MDPI
Year: 2024

description: Dynamic simulation provides an efficient approach for improving the efficiency of parabolic trough power plants and control circuits. In the dynamic simulation, the possibilities and operating conditions of the plant are evaluated regarding materials, processes, emissions, or economics. Several studies related to the dynamic simulation of the parabolic trough technology are summarised and discussed in this work. This study is the first research that presents a thorough description of the advanced control circuits used in the solar field and thermal storage system of a parabolic trough power plant. This power plant was implemented using advanced process simulation software (APROS). The dynamic model was built based on the real specifications of the power plant.
EXAMINING CHANGES IN LAND USE AFTER THE SALE OF DEVELOPMENT RIGHTS ON FARMS IN RHODE ISLAND
Creators: name: Wichelns, Dennis
name: Nakao, Megumi
name: Wichelns, Dennis
name: Nakao, Megumi
Publisher: name: Unknown
Year: 2001
Subjects: Land Economics/Use

description: Purchasable development rights (PDR) programs are generally considered to provide permanent protection of farmland because development rights are separated from the land in perpetuity. However, the programs do not require that farming activities be maintained in the future. Farming may be discontinued on PDR parcels due to changes in economic conditions or if the parcels are converted to non-farm, rural estates. Such changes may reduce the flow of public goods that citizens seek to obtain by implementing PDR programs. We examine changes in land use on PDR parcels to determine if current activities are consistent with program goals. While changes have occurred in the crops and livestock produced on Rhode Island farms, over time, all of the farms on which development rights were purchased during 1985 through 1999 are currently being farmed by the original owners or by new operators who have either purchased or leased the land.
Freyastera undefined-2
Creators: name: Zhang, Ruiyan
name: Zhou, Yadong
name: Mao, Jingwen
name: Wang, Chunsheng
name: Zhang, Dongsheng
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Brisingida
Freyellidae
Freyastera
Freyastera undefined-2

description: Freyastera sp. 2
Fig. 10
Freyastera stet. CCZ_201: Bribiesca-Contreras et al. 2022: 44.
Material examined.
NHMUK 2022.81 (Fig. 10 A, B, F) (Freyastera stet. CCZ_201); RSIOAST 0103 (Fig. 10 C – E). (Suppl. material 1).
Distribution.
Eastern Pacific: Clarion-Clipperton Zone; Northwest Pacific: Western Philippine Basin. 5204–5900 m.
description: Published as part of Zhang, Ruiyan, Zhou, Yadong, Mao, Jingwen, Wang, Chunsheng & Zhang, Dongsheng, 2025, Hidden diversity of Freyastera (Asteroidea, Brisingida, Freyellidae) at great depth: Description of new species and remarks on species boundaries, pp. 735-760 in Zoosystematics and Evolution 101 (2) on pages 735-760, DOI: 10.3897/zse.101.144918
THE USE OF FOLLOW-UP QUESTIONS TO NO RESPONSES IN DICHOTOMOUS CHOICE CONTINGENT VALUATION SURVEYS
Creators: name: Curtis, John A.
name: Curtis, John A.
Publisher: name: Unknown
Year: 2001
Subjects: Research Methods/ Statistical Methods

description: The dichotomous choice contingent valuation survey format collects inexact information on willingness to pay (WTP), that is, whether WTP is greater or less than the bid price. Sometimes researchers make the precise conjecture that certain respondents have zero WTP using information from follow-up motive questions. But follow-up questions are designed to provide information on respondents' motives, not refined information on the magnitude of WTP. Assuming that certain respondents have WTP = $0.00 is beyond the design of follow-up questions. The paper's results show that unless information from follow-up questions is utilized within the limitations of survey design, welfare and model parameter estimates are likely to have high standard errors leading to inappropriate policy prescriptions.
Entanglement of mixed macroscopic superpositions: an entangling-power study
Creators: name: Paternostro, M.
name: Jeong, H.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate entanglement properties of a recently introduced class of macroscopic quantum superpositions in two-mode mixed states. One of the tools we use in order to infer the entanglement in this non-Gaussian class of states is the power to entangle a qubit system. Our study reveals features which are hidden in a standard approach to entanglement investigation based on the uncertainty principle of the quadrature variables. We briefly describe the experimental setup corresponding to our theoretical scenario and a suitable modification of the protocol which makes our proposal realizable within the current experimental capabilities.
description: 9 pages, 7 figures, RevTeX4
Forecasting Brazilian and American COVID-19 cases based on artificial intelligence coupled with climatic exogenous variables
Creators: name: da Silva, Ramon Gomes
name: Ribeiro, Matheus Henrique Dal Molin
name: Mariani, Viviana Cocco
name: Coelho, Leandro dos Santos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Machine Learning (cs.LG)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: The novel coronavirus disease (COVID-19) is a public health problem once according to the World Health Organization up to June 10th, 2020, more than 7.1 million people were infected, and more than 400 thousand have died worldwide. In the current scenario, the Brazil and the United States of America present a high daily incidence of new cases and deaths. It is important to forecast the number of new cases in a time window of one week, once this can help the public health system developing strategic planning to deals with the COVID-19. In this paper, Bayesian regression neural network, cubist regression, k-nearest neighbors, quantile random forest, and support vector regression, are used stand-alone, and coupled with the recent pre-processing variational mode decomposition (VMD) employed to decompose the time series into several intrinsic mode functions. All Artificial Intelligence techniques are evaluated in the task of time-series forecasting with one, three, and six-days-ahead the cumulative COVID-19 cases in five Brazilian and American states up to April 28th, 2020. Previous cumulative COVID-19 cases and exogenous variables as daily temperature and precipitation were employed as inputs for all forecasting models. The hybridization of VMD outperformed single forecasting models regarding the accuracy, specifically when the horizon is six-days-ahead, achieving better accuracy in 70% of the cases. Regarding the exogenous variables, the importance ranking as predictor variables is past cases, temperature, and precipitation. Due to the efficiency of evaluated models to forecasting cumulative COVID-19 cases up to six-days-ahead, the adopted models can be recommended as a promising models for forecasting and be used to assist in the development of public policies to mitigate the effects of COVID-19 outbreak.
description: 24 pages, 6 figures. Published paper
Informe final del proyecto "Impacto económico de la dependencia física en los adultos mayores y estimación de la carga asociada a los cuidados informales"
Creators: name: Montañez, Julio
name: Salinas, Aarón
name: Manrique-Espinoza, Betty Soledad
Publisher: name: figshare
Year: 2020
Subjects: subject: 111702 Aged Health Care
subject: FOS: Health sciences

description: Informe Final del Proyecto
Observables in Extended Percolation Models of Causal Set Cosmology
Creators: name: Dowker, Fay
name: Surya, Sumati
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Classical sequential growth models for causal sets provide an important step towards the formulation of a quantum causal set dynamics. The covariant observables in a class of these models known as generalised percolation have been completely characterised in terms of physically well-defined ``stem sets'' and yield an insight into the nature of observables in quantum causal set cosmology. We discuss a recent extension of generalised percolation and show that the characterisation of covariant observables in terms of stem sets is also complete in this extension.
description: 14 pages, 2 figures
CONTRIBUTION DU MARAICHAGE A LA LUTTE CONTRE LA PAUVRETE ET L'INSECURITE ALIMENTAIRE AU MALI : CAS DE LA COMMUNE DE SANANKOROBA
Creators: name: Mohamed Amadou Salia DICKO
name: Oumar Diandjo TRAORE
name: Adama KONE
name: Salia Sinaly TRAORE
Publisher: name: Zenodo
Year: 2024

description: Le maraîchage est considéré comme une activité de contre saison participant à l’épanouissement économique des ménages ,  face à une pluviométrie déficitaire entrainant de mauvaises récoltes des céréales, le maraîchage demeure un espoir pour combler ce déficit et une source de revenus des paysans. Il contribue à l’amélioration des repas et des conditions des familles en milieu rural. Dans le cadre de cette recherche il est question d’analyser la contribution du maraichage dans la lutte contre la pauvreté et l’insécurité alimentaire tout en mettant en lumière quelques contraintes entravant son développement. La méthodologie utilisée pour la présente recherche est la méthode descriptive qui se base sur une analyse statistique à travers des graphiques, des tableaux croisés. Les données ont été collectées auprès de 100 producteurs basés dans la commune de Sanankoraba , les logiciels Statistical Package for the Social Sciences (SPSS) la version 20 et le R (4.2.1) ont été utilisées pour analyser les données. L’analyse des données collectées a permis de dégager les impacts socioéconomiques du maraichage. Malgré le revenu généré par cette activité , certains producteurs rencontrent des difficultés dans la pratique du maraichage, ces problèmes sont liés à la source d’eau, d’écoulement des produits maraichers, insuffisance de l’encadrement, l’accès aux crédits agricoles et les attaques des ravageurs. Par ailleurs pour bonne marche de cette activité la création des marchés agricoles, l’encadrement techniques, l’approfondissement des puits et l’accès aux crédits agricoles afin d’accroitre leurs productions sont les recommandations proposées par les producteurs.