cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer
Creators: name: Rottgering, Huub
name: Jaffe, Walter
name: Meisenheimer, Klaus
name: Sol, Helen
name: Leinert, Christoph
name: Richichi, Andrea
name: Wittkowski, Markus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Dusty tori have been suggested to play a crucial role in determining the physical characteristics of active galactic nuclei (AGN), but investigation of their properties has stalled for lack of high resolution mid-IR imaging. Recently, a long-awaited breakthrough in this field was achieved: NGC 1068, a nearby AGN, was the first extragalactic object to be observed with a mid-IR interferometer, thereby obtaining the needed angular resolution to study the alleged torus. In this proceeding, first the field of AGN research is briefly reviewed, with an emphasis on models of dusty tori. Second, the general properties of the key object NGC 1068 are discussed. Third, the MIDI mid-IR interferometric data set is presented together with a first attempt to interpret this data in the context of tori models. Fourth, preliminary MIDI interferometric spectra of the nucleus of the nearby starbursting galaxy Circinus are presented. Finally, we briefly discuss the prospects of ESA's Darwin mission for observing nearby and distant AGN. This mission will allow detailed mapping of tori of low luminosity AGN such as NGC 1068 up to redshifts of 1 - 2 and more luminous AGN up to redshift of 10 and beyond (abridged).
description: 10 pages, 3 figures, published in Proceedings of SPIE Volume 5491 "New Frontiers in Stellar Interferometry"
Electronic Course Delivery: Do Students Care and Do They Think It's Worthwhile?
Creators: name: Henning, Steven A.
name: Vandeveer, Lonnie R.
name: Kazmierczak, Richard F.
name: Henning, Steven A.
name: Vandeveer, Lonnie R.
name: Kazmierczak, Richard F.
Publisher: name: Unknown
Year: 2005
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Developments in communication technology have created new opportunities in higher education, but they have also created new challenges. As the focus shifts from providing quality teaching to providing quality learning environments, faculty and administrators need to acquire a better understanding of student perceptions of these new technologies in order to intelligently plan academic programs. This research summarizes student perceptions of electronic delivery methods in selected agricultural economics courses at Louisiana State University during the 2002-03 and 2004-05 academic years. Preliminary results suggest that the "traditional" chalkboard classroom is rapidly disappearing across all curriculums and that students favor this change even though they do not necessarily think the new approaches increase educational quality.
Explaining Participation in the Conservation Reserve Program and its Effects on Farm Productivity and Efficiency
Creators: name: Boisvert, Richard N.
name: Chang, Hung-Hao
name: Boisvert, Richard N.
name: Chang, Hung-Hao
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: CRP
subject: Choice Modeling
subject: Productivity

description: Using a three-stage sample selection model, we identify factors affecting the probability and level of participation in CRP. Statistical tests support hypotheses that off-farm work and participation in other farm programs are exogenous to the CRP decision. We compare the relative technical and scale efficiencies for CRP participants and non-participants.
Satellites of the largest Kuiper belt objects
Creators: name: Brown, M. E.
name: van Dam, M. A.
name: Bouchez, A. H.
name: Mignant, D. Le
name: Campbell, R. D.
name: Chin, J. C. Y.
name: Conrad, A.
name: Hartman, S. K.
name: Johansson, E. M.
name: Lafon, R. E.
name: Rabinowitz, D. L.
name: Stomski,, P. J.
name: Summers, D. M.
name: Trujillo, C. A.
name: Wizinowich, P. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have searched the four brightest objects in the Kuiper belt for the presence of satellites using the newly commissioned Keck Observatory Laser Guide Star Adaptive Optics system. Satellites are seen around three of the four objects: Pluto (whose satellite Charon is well-known), 2003 EL61, and 2003 UB313. The object 2005 FY9, the brightest Kuiper belt object after Pluto, does not have a satellite detectable within 0.4 arcseconds with a brightness of more than 0.5% of the primary. The presence of satellites to 3 of the 4 brightest Kuiper belt objects is inconsistent with the fraction of satellites in the Kuiper belt at large at the 99.1% confidence level, suggesting a different formation mechanism for these largest KBO satellites. The satellites of 2003 EL61 and 2003 UB313, with fractional brightnesses of 5% and 2% of their primaries, respectively, are significantly fainter relative to their primaries than other known Kuiper belt object satellites, again pointing to possible differences in their origin.
The Universe at z>10: Predictions for JWST from the UniverseMachine DR1
Creators: name: Behroozi, Peter
name: Conroy, Charlie
name: Wechsler, Risa H.
name: Hearin, Andrew
name: Williams, Christina C.
name: Moster, Benjamin P.
name: Yung, L. Y. Aaron
name: Somerville, Rachel S.
name: Gottlöber, Stefan
name: Yepes, Gustavo
name: Endsley, Ryan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The James Webb Space Telescope (JWST) is expected to observe galaxies at $z>10$ that are presently inaccessible. Here, we use a self-consistent empirical model, the UniverseMachine, to generate mock galaxy catalogues and lightcones over the redshift range $z=0-15$. These data include realistic galaxy properties (stellar masses, star formation rates, and UV luminosities), galaxy-halo relationships, and galaxy-galaxy clustering. Mock observables are also provided for different model parameters spanning observational uncertainties at $z<10$. We predict that Cycle 1 JWST surveys will very likely detect galaxies with $M_*>10^7 M_\odot$ and/or $M_{1500}12$ expand dramatically, so efforts to detect $z>12$ galaxies will provide the most valuable constraints on galaxy formation models. The faint-end slopes of the stellar mass/luminosity functions at a given mass/luminosity threshold steepen as redshift increases. This is because observable galaxies are hosted by haloes in the exponentially falling regime of the halo mass function at high redshifts. Hence, these faint-end slopes are robustly predicted to become shallower below current observable limits ($M_\ast < 10^7M_\odot$ or $M_\mathrm{1500}>-17$). For reionization models, extrapolating luminosity functions with a constant faint-end slope from $M_{1500}=-17$ down to $M_{1500}=-12$ gives the most reasonable upper limit for the total UV luminosity and cosmic star formation rate up to $z\sim 12$. We compare to three other empirical models and one semi-analytic model, showing that the range of predicted observables from our approach encompasses predictions from other techniques. Public catalogues and lightcones for common fields are available online.
description: 17 pages, MNRAS submitted. Catalogs and lightcones available at https://www.peterbehroozi.com/data.html
ECONOMIC IMPACTS RESULTING FROM CO-FIRING BIOMASS FEEDSTOCKS IN SOUTHEASTERN UNITED STATES COAL-FIRED PLANTS
Creators: name: English, Burton C.
name: Jensen, Kimberly L.
name: Menard, R. Jamey
name: Walsh, Marie E.
name: Torre Ugarte, Daniel De La
name: Brandt, Craig
name: Van Dyke, Jim
name: Hadley, Stanton
name: English, Burton C.
name: Jensen, Kimberly L.
name: Menard, R. Jamey
name: Walsh, Marie E.
name: Torre Ugarte, Daniel De La
name: Brandt, Craig
name: Van Dyke, Jim
name: Hadley, Stanton
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: Economic impacts of using biomass in Southeast United States coal-fired plants are estimated using a county-level biomass database; ORCED, a dynamic electricity distribution model that estimates feedstock value; ORIBAS, a GIS model that estimates feedstock transportation costs; and IMPLAN, an input-output model that determines the impacts of co-firing on economic activity.
Remarks on some new models of interacting quantum fields with indefinite metric
Creators: name: Albeverio, S.
name: Gottschalk, H.
name: Wu, J. -L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81T10

description: We study quantum field models in indefinite metric. We introduce the modified Wightman axioms of Morchio and Strocchi as a general framework of indefinite metric quantum field theory (QFT) and present concrete interacting relativistic models obtained by analytical continuation from some stochastic processes with Euclidean invariance. As a first step towards scattering theory in indefinite metric QFT, we give a proof of the spectral condition on the translation group for the relativistic models.
description: 13 pages
Lüpsen, Focko (Hrsg.), Neu-Delhi Dokumente
Creators: name: Boyens, Armin
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 11 Nr. 1 (1962): Ökumenische Rundschau, Band 11, Heft 1
Searching for debris discs in the 30 Myr open cluster IC 4665
Creators: name: Miret-Roig, Núria
name: Huélamo, Nuria
name: Bouy, Hervé
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: Debris discs orbiting young stars are key to understand dust evolution and the planetary formation process. We take advantage of a recent membership analysis of the 30 Myr nearby open cluster IC 4665 based on the Gaia and DANCe surveys to revisit the disc population of this cluster. Aims: We aim to study the disc population of IC 4665 using Spitzer (MIPS and IRAC) and WISE photometry. Methods: We use several colour-colour diagrams with empirical photospheric sequences to detect the sources with an infrared excess. Independently, we also fit the spectral energy distribution (SED) of our debris disc candidates with the Virtual Observatory SED analyser (VOSA) which is capable of automatically detecting infrared excesses and provides effective temperature estimates. Results: We find six candidates debris disc host-stars (five with MIPS and one with WISE) and two of them are new candidates. We estimate a disc fraction of 24$\pm$10\% for the B-A stars, where our sample is expected to be complete. This is similar to what has been reported in other clusters of similar ages (Upper Centaurus Lupus, Lower Centaurus Crux, the $β$ Pictoris moving group, and the Pleiades). For solar type stars we find a disk fraction of 9$\pm$9%, lower than that observed in regions with comparable ages. Conclusions: Our candidates debris disc host-stars are excellent targets to be studied with ALMA or the future James Webb Space Telescope (JWST).
description: Accepted for publication in A&A
Architectural Blueprints: The 4+1 View Model of Software Architecture
Creators: name: Kruchten, Philippe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.11

description: This article presents a model for describing the architecture of software-intensive systems, based on the use of multiple, concurrent views. This use of multiple views allows to address separately the concerns of the various stakeholders of the architecture: end-user, developers, systems engineers, project managers, etc., and to handle separately the functional and non functional requirements. Each of the five views is described, together with a notation to capture it. The views are designed using an architecture-centered, scenario-driven, iterative development process.
description: Early draft, better quality than IEEE published version
Spectroscopy of $\rm{q}^3\bar{\rm{q}}^3$-States in Quark Model and Baryon-Antibaryon Enhancements
Creators: name: Ding, Gui-Jun
name: Ping, Jialun
name: Yan, Mu-Lin
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the mass spectrum of the $\rm{q}^3\bar{\rm{q}}^3$ mesons both from the quark model with triquark correlations and from common quark model with colormagnetic interactions and with relative S-waves between quarks. Two cluster configurations $(\rm{q}^3)-(\bar{\rm{q}}^3)$ and $(\rm{q}^2\bar{\rm{q}})-(\rm{q}\bar{\rm{q}}^2)$ are considered. In the spectrum we find rather stable states which have the same quantum number with particle resonances which are corresponding to the $p\bar{p}$ enhancement, $p\barΛ$ enhancement and $Λ\barΛ$ enhancement with spin-$\mathbf{0}$ or $\mathbf{1}$. This imply these enhancements are NOT experimental artifacts. The color-spin-flavor structures of $p\bar{p}$, $p\barΛ$, and $Λ\barΛ$ enhancements are revealed. The existence of spin-$\mathbf{1}$ $Λ\barΛ, p\barΛ, p\bar{p}$ enhancements is predicted.
description: 45 pages, 5 figures
Three loop MSbar renormalization of QCD in the maximal abelian gauge
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the three loop anomalous dimensions of the quark, centre and off-diagonal gluons, centre and off-diagonal ghosts and the gauge fixing parameters in the maximal abelian gauge for an arbitrary colour group in the MSbar renormalization scheme at three loops. We show that the three loop MSbar beta-function emerges from the renormalization of the centre gluon and also deduce the anomalous dimension of the BRST invariant dimension two mass operator. Moreover, we demonstrate that in the limit that the dimension of the centre of the group tends to zero, the anomalous dimensions of the quarks, off-diagonal gluons and off-diagonal ghosts tend to those of the quarks, gluons and ghosts of the Curci-Ferrari gauge respectively.
description: 25 latex pages
Joint analysis of 6dFGS and SDSS peculiar velocities for the growth rate of cosmic structure and tests of gravity
Creators: name: Said, Khaled
name: Colless, Matthew
name: Magoulas, Christina
name: Lucey, John R.
name: Hudson, Michael J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Measurement of peculiar velocities by combining redshifts and distance indicators is a powerful way to measure the growth rate of cosmic structure and test theories of gravity at low redshift. Here we constrain the growth rate of structure by comparing observed Fundamental Plane peculiar velocities for 15894 galaxies from the 6dF Galaxy Survey (6dFGS) and Sloan Digital Sky Survey (SDSS) with predicted velocities and densities from the 2M$++$ redshift survey. We measure the velocity scale parameter $β\equiv {Ω_m^γ}/b = 0.372^{+0.034}_{-0.050}$ and $0.314^{+0.031}_{-0.047}$ for 6dFGS and SDSS respectively, where $Ω_m$ is the mass density parameter, $γ$ is the growth index, and $b$ is the bias parameter normalized to the characteristic luminosity of galaxies, $L^*$. Combining 6dFGS and SDSS we obtain $β= 0.341\pm0.024$, implying that the amplitude of the product of the growth rate and the mass fluctuation amplitude is $fσ_8 = 0.338\pm0.027$ at an effective redshift $z=0.035$. Adopting $Ω_m = 0.315\pm0.007$ as favoured by Planck and using $γ=6/11$ for General Relativity and $γ=11/16$ for DGP gravity, we get $S_8(z=0) = σ_8 \sqrt{Ω_m/0.3} =0.637 \pm 0.054$ and $0.741\pm0.062$ for GR and DGP respectively. This measurement agrees with other low-redshift probes of large scale structure but deviates by more than $3σ$ from the latest Planck CMB measurement. Our results favour values of the growth index $γ> 6/11$ or a Hubble constant $H_0 > 70$\,km\,s$^{-1}$\,Mpc$^{-1}$ or a fluctuation amplitude $σ_8 < 0.8$ or some combination of these. Imminent redshift surveys such as Taipan, DESI, WALLABY, and SKA1-MID will help to resolve this tension by measuring the growth rate of cosmic structure to 1\% in the redshift range $0 < z < 1$.
description: 19 pages, 15 figures, 2 tables, accepted for publication in MNRAS
The muon beam monitor for the FAMU experiment: design, simulation, test and operation
Creators: name: Rossini, R.
name: Baldazzi, G.
name: Banfi, S.
name: Baruzzo, M.
name: Benocci, R.
name: Bertoni, R.
name: Bonesini, M.
name: Carsi, S.
name: Cirrincione, D.
name: Clemenza, M.
name: Colace, L.
name: de Bari, A.
name: de Vecchi, C.
name: Fasci, E.
name: Gaigher, R.
name: Gianfrani, L.
name: Hillier, A. D.
name: Ishida, K.
name: King, P. J. C.
name: Lord, J. S.
name: Mazza, R.
name: Menegolli, A.
name: Mocchiutti, E.
name: Monzani, S.
name: Moretti, L.
name: Petroselli, C.
name: Pizzolotto, C.
name: Prata, M. C.
name: Pullia, M.
name: Quintieri, L.
name: Ramponi, R.
name: Rossella, M.
name: Sbrizzi, A.
name: Toci, G.
name: Tortora, L.
name: Vallazza, E. S.
name: Yokoyama, K.
name: Vacchi, A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: FAMU is an INFN-led muonic atom physics experiment based at the RIKEN-RAL muon facility at the ISIS Neutron and Muon Source (United Kingdom). The aim of FAMU is to measure the hyperfine splitting in muonic hydrogen to determine the value of the proton Zemach radius with accuracy better than 1%.The experiment has a scintillating-fibre hodoscope for beam monitoring and data normalisation. In order to carry out muon flux estimation, low-rate measurements were performed to extract the single-muon average deposited charge. Then, detector simulation in Geant4 and FLUKA allowed a thorough understanding of the single-muon response function, crucial for determining the muon flux. This work presents the design features of the FAMU beam monitor, along with the simulation and absolute calibration measurements in order to enable flux determination and enable data normalisation.
Kinematics of Nearby Subdwarf Stars
Creators: name: Arifyanto, M. I.
name: Fuchs, B.
name: Jahreiss, H.
name: Wielen, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of the space motions of 742 subdwarf stars based on the sample of Carney et al. (1994, CLLA). Hipparcos parallaxes, TYC2+HIP proper motions and Tycho2 proper motions were combined with radial velocities and metallicities from CLLA. The kinematical behavior is discussed in particular in relation to their metallicities. The majority of these sample stars have metal abundances of [Fe/H] >-1 and represent the thick disk population. The halo component, with [Fe/H]
description: 6 pages, 7 figures, accepted by Astronomy & Astrophysics
THE IMPACT OF HISTORICAL AND REGIONAL LINKAGES ON FREE TRADE IN THE AMERICAS: A GRAVITY MODEL ANALYSIS ACROSS SECTORS
Creators: name: Sandberg, H. Mikael
name: Sandberg, H. Mikael
Publisher: name: Unknown
Year: 2004
Subjects: International Relations/Trade

description: This paper estimates the impact of regional linkages (i.e. regional trading agreements) and historical linkages (i.e. neo-colonial trade ties) on trade pattern in the Western Hemisphere using the gravity model of international trade. The estimation is made at the aggregate trade level as well as on the disaggregated level by using trade data corresponding to food products and manufactured goods respectively. The evidence suggests that significant distortions of trade patterns due to regional and historical linkages exist. It seems that smaller economies are more receptive to the effects of regionalism than larger ones and that the food sector is more affected by distortions than the manufactured goods sector.
GASP XXX. The spatially resolved SFR-Mass relation in stripping galaxies in the local universe
Creators: name: Vulcani, B.
name: Poggianti, B. M.
name: Tonnesen, S.
name: McGee, S. L.
name: Moretti, A.
name: Fritz, J.
name: Gullieuszik, M.
name: Jaffe, Y. L.
name: Franchetto, A.
name: Tomicic, N.
name: Mingozzi, M.
name: Bettoni, D.
name: Wolter, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The study of the spatially resolved Star Formation Rate-Mass (Sigma_SFR-Sigma_M) relation gives important insights on how galaxies assemble at different spatial scales. Here we present the analysis of the Sigma_SFR-Sigma_M of 40 local cluster galaxies undergoing ram pressure stripping drawn from the GAs Stripping Phenomena in galaxies (GASP) sample. Considering their integrated properties, these galaxies show a SFR enhancement with respect to undisturbed galaxies of similar stellar mass; we now exploit spatially resolved data to investigate the origin and location of the excess. Even on ~1kpc scales, stripping galaxies present a systematic enhancement of Sigma_SFR (~0.35 dex at Sigma_M =108^M_sun/kpc^2) at any given Sigma_M compared to their undisturbed counterparts. The excess is independent on the degree of stripping and of the amount of star formation in the tails and it is visible at all galactocentric distances within the disks, suggesting that the star formation is most likely induced by compression waves from ram pressure. Such excess is larger for less massive galaxies and decreases with increasing mass. As stripping galaxies are characterised by ionised gas beyond the stellar disk, we also investigate the properties of 411 star forming clumps found in the galaxy tails. At any given stellar mass density, these clumps are systematically forming stars at a higher rate than in the disk, but differences are reconciled when we just consider the mass formed in the last few 10^8yr ago, suggesting that on these timescales the local mode of star formation is similar in the tails and in the disks.
description: 20 pages, 13 figures, accepted for publication in ApJ
EDITAL ESPM DO PROCESSO SELETIVO PARA INGRESSO EM FEV-2021 (MESTRADO E DOUTORADO EM ADMINISTRAÇÃO)
Creators: name: Prof. Dr. Mateus Canniatti Ponchio
name: Profa. Dra. Vivian Iara Strehlau
Publisher: name: Zenodo
Year: 2020
Subjects: Mestrado e Doutorado; ESPM; Seletivo

description: Este Edital visa orientar os interessados no Programa de Pós-Graduação Stricto Sensu – Mestrado e Doutorado em Administração com linhas de pesquisa em Marketing, Estratégia e Inovação e área de concentração em Gestão Internacional sobre as normas do processo seletivo para ingresso em fevereiro de 2021. A ESPM possui reconhecida posição de liderança e atuação ao longo das últimas décadas como instituição provedora de cursos de excelência (nos variados níveis – graduação, pós-graduação e extensão) em Marketing e Gestão. O PPGA/ESPM, localizado em São Paulo (SP), foi fundado em 2010 com conceito 3, o qual subiu para 4 na avaliação da Trienal 2010-2012 e, depois, subiu para 5 na avaliação do Quadriênio 2013-2016. O Programa tem como objetivo preparar docentes, pesquisadores e profissionais para a reflexão científica sobre temas atuais da Administração em especial na área de gestão internacional, estimulando o domínio dessa ciência e de suas ferramentas analíticas, bem como preparar os alunos para a carreira em pesquisa, docência e publicação.
description: EDITAL DO PROCESSO SELETIVO PARA INGRESSO EM FEV-2021 PROGRAMA DE MESTRADO E DOUTORADO EM ADMINISTRAÇÃO Marketing, Estratégia e Inovação em Gestão Internacional
DESIGNING EXPERIMENTAL AUCTIONS FOR MARKETING RESEARCH: EFFECT OF VALUES, DISTRIBUTIONS, AND MECHANISMS ON INCENTIVES FOR TRUTHFUL BIDDING
Creators: name: Lusk, Jayson L.
name: Alexander, Corinne E.
name: Rousu, Matthew C.
name: Lusk, Jayson L.
name: Alexander, Corinne E.
name: Rousu, Matthew C.
Publisher: name: Unknown
Year: 2004
Subjects: Institutional and Behavioral Economics

description: Accurately estimating consumer demand for new products is an arduous task made even more difficult by the fact that individuals tend to overstate the amount they are willing to pay for new goods when asked hypothetical questions. Despite their appeal in eliminating hypothetical bias, marketers have been slow to adopt experimental auctions as a standard tool in pre-test market research. One issue that has slowed adoption of the methodology is the proliferation of auction mechanisms and the lack of clear guidance in choosing between mechanisms. In this paper, we provide insight into the theoretical properties of two incentive compatible value elicitation mechanisms, the BDM and Vickrey 2nd price auction, such that practitioners can make more informed decisions in designing experimental auctions to determine consumer willingness-to-pay. In particular, we draw attention to the shapes of the payoff functions and show in a simulation that the two mechanisms differ with respect to the expected cost of deviating from truthful bidding. We show that incentives for truthful bidding depend on the distribution of competing bidders' values and/or prices and individuals' true values for a good. The simulation indicates the 2nd price auction punishes deviations from truthful bidding more severely for high value individuals than the BDM mechanism. These results are confirmed by an experimental study, where we find more accurate bidding for high-value individuals in the 2nd price auction as compared to the BDM. Our results also indicate that when implementing the BDM mechanism, the greatest incentives for truthful value revelation are created when the random price generator is based on a normal distribution centered on an individual's expected true value.
The soft-gluon limit and the infrared enhancement of the quark-gluon vertex
Creators: name: Oliveira, Orlando
name: Frederico, Tobias
name: de Paula, Wayne
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Schwinger-Dyson quark equation (SDE) combined with results from lattice simulation for the propagators are used to obtain information on the quark-gluon vertex, taking into account the recent full QCD lattice results for the soft-gluon limit. Its inclusion leads to a clear enhancement of the infrared quark-gluon vertex. We also find that the relative contribution of the quark-ghost kernel to the quark-gluon vertex in the infrared region does not follow the rules from the perturbative analysis of the ultraviolet region. This shows that for QCD the intuition based on perturbation theory does not apply to the full momentum range. The framework developed in the current work provides analytical expressions for all the longitudinal components of vertex taken into account.
Variational Worldline Approximation for the Relativistic Two-Body Bound State in a Scalar Model
Creators: name: Barro-Bergflödt, K.
name: Rosenfelder, R.
name: Stingl, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use the worldline representation of field theory together with a variational approximation to determine the lowest bound state in the scalar Wick-Cutkosky model where two equal-mass constituents interact via the exchange of mesons. Self-energy and vertex corrections are included approximately in a consistent way as well as crossed diagrams. Only vacuum-polarization effects of the heavy particles are neglected. In a path integral description of an appropriate current-current correlator an effective, retarded action is obtained by integrating out the meson field. As in the polaron problem we employ a quadratic trial action with variational functions to describe retardation and binding effects through multiple meson exchange.The variational equations for these functions are derived, discussed qualitatively and solved numerically. We compare our results with the ones from traditional approaches based on the Bethe-Salpeter equation and find an enhanced binding contrary to some claims in the literature. For weak coupling this is worked out analytically and compared with results from effective field theories. However, the well-known instability of the model, which usually is ignored, now appears at smaller coupling constants than in the one-body case and even when self-energy and vertex corrections are turned off. This induced instability is investigated analytically and the width of the bound state above the critical coupling is estimated.
description: 62 pages, 7 figures, FBS style, published version
THE EFFICIENCY OF THE FUTURES MARKET FOR AGRICULTURAL COMMODITIES IN THE UK
Creators: name: Li, Jia
name: Hanrahan, Kevin F.
name: McErlean, Seamus
name: Li, Jia
name: Hanrahan, Kevin F.
name: McErlean, Seamus
Publisher: name: Unknown
Year: 2004
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This paper uses cointegration procedures to test for agricultural commodity futures market efficiency in the UK. Cointegration between spot and futures prices is a necessary condition for market efficiency where these prices are characterised by stochastic trends (Lai and Lai 1991). In addition, acceptance of the 'unbiasedness hypothesis' requires that the spot and lagged futures prices are cointegrated with the cointegrating vector (1, -1). Alternatively, Brenner and Kroner (1995) use a no-arbitrage cost-of-carry model to argue that the existence of cointegration between spot and futures prices depends on the time series properties of the cost-of-carry. According to Brenner and Kroner (1995), a tri-variate cointegrating relationship (the BK hypothesis) should exist among the spot price, the lagged futures price and the lagged interest rate (that component of cost-of-carry most likely to be non-stationary). These variables should be cointegrated with a cointegrating vector (1, -1, 1). Kellard (2002) finds that both bi-variate and tri-variate cointegrating relationships are found in a sample from the wheat futures market in the UK, and thus the so-called "cointegration paradox" emerges. As Kellard (2002) points out this paradox exists because it is theoretically impossible for two variables to be cointegrated with each other while simultaneously being cointegrated with a third variable. Using a larger sample of wheat futures market prices from LIFFE both the 'unbiasedness hypothesis' and the 'BK hypothesis' are examined. The results indicate that the 'BK hypothesis' should be rejected.
Seismic performance of pretensioned spun high strength concrete piles
Creators: name: Taksinrote, Worapol
Publisher: name: University of British Columbia
Year: 2009

description: Pretensioned spun high strength concrete piles manufactured by Industrials Concrete Products (ICP) Berhad, Malaysia were studied in this experimental program. The objective was to investigate the seismic performance of the piles under varying axial compression and lateral load reversals. Ten test specimens, ranging in length from 1 m to 4 m, were cut from 250 mm diameter piles. Rather than attempting to simulate the complex loading on a real pile, idealized boundary conditions were used in the test: one end was a fixed support, and the free end of the pile was subjected to a lateral load. Using instrumentation and electronic equipment, a wide variety of data was recorded during the test, and subsequently employed for analysis. Aspects of the test specimens that were investigated include loaddisplacement characteristics, failure mechanisms, crack patterns, crack widths, strain limits, and curvature capacities. While some diagonal cracking was observed in the very short specimens, the behavior of all specimens was dominated by flexure. The flexural failure mechanisms for the piles involved either concrete crushing in compression or fracture of the prestressing strands in tension. Both failure modes were very brittle. The experiments indicated that the observed compression strain limit is about 0.5 %, and the tension strain limit is between 1.5 % and 2.0 %. It is interesting to note that the tension strain limit determined from the current pile tests are considerably smaller than what was determined from bare bar tests of the prestressing strands. An analytical model called Response-2000 was used to predict the bending moment-curvature relationships and curvature capacities of the specimens. The model was also used to study the shear response of the specimens. The most important result from the current experimental study is the relationship between the curvature capacity of the piles and the applied axial compression. Predictions of the curvature capacity using Response-2000 and the measured strain limits were found to be in good agreement with the test observations. Thus Response-2000 and these strain limits can be used to predict the curvature capacity of other sizes of ICP pretensioned spun high strength concrete piles.
PUPIL TRANSPORTATION: THE IMPACT OF MARKET STRUCTURE ON EFFICIENCY IN RURAL, SUBURBAN, AND URBAN SCHOOL DISTRICTS IN MINNESOTA
Creators: name: McCullough, Gerard J.
name: Lazarus, Sheryl S.
name: McCullough, Gerard J.
name: Lazarus, Sheryl S.
Publisher: name: Unknown
Year: 2004
Subjects: Public Economics

description: This paper presents a cost function for the pupil transportation industry in Minnesota. In-house provision of transportation was not shown to be more costly than outsourcing. Large contractors may seek the most profitable contracts in urban and suburban areas, while showing little interest in contracting opportunities in rural school districts.
DEMAND FOR ENHANCED FOODS AND THE VALUE OF NUTRITIONAL ENHANCEMENTS OF FOOD: THE CASE OF MARGARINES
Creators: name: Huffman, Sonya Kostova
name: Jensen, Helen H.
name: Huffman, Sonya Kostova
name: Jensen, Helen H.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: scanner data
subject: hedonic approach
subject: demand for healthy food

description: This paper evaluates consumer preferences and choice of nutritionally enhanced food products based on economic, geographic, ethnic and other socioeconomic characteristics. Household scanner data allow estimation of hedonic price function and a probit model on the choice of margarine that promotes good health. The empirical estimation established a positive value for nutritional enhancement.
Enumerations of half-turn symmetric alternating-sign matrices of odd order
Creators: name: Razumov, A. V.
name: Stroganov, Yu. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It was shown by Kuperberg that the partition function of the square-ice model related to half-turn symmetric alternating-sign matrices of even order is the product of two similar factors. We propose a square-ice model whose states are in bijection with half-turn symmetric alternating-sign matrices of odd order. The partition function of the model is expressed via the above mentioned factors. The contributions to the partition function of the states corresponding to the alternating-sign matrices having 1 or -1 as the central entry are found and the related enumerations are obtained.
description: 28 pages, 14 figures
SPATIAL TARGETING STRATEGIES FOR LAND CONSERVATION
Creators: name: Newburn, David A.
name: Berck, Peter
name: Merenlender, Adina
name: Newburn, David A.
name: Berck, Peter
name: Merenlender, Adina
Publisher: name: Unknown
Year: 2004
Subjects: Land Economics/Use

description: Purchasing development rights is a major mechanism for the protection of environmental quality and landscape amenities. This paper provides a targeting strategy for protecting multiple environmental benefits that takes into account land costs and probability of land use conversion. We compare two strategies. Subject to a budget constraint on parcel purchases, the standard strategy is to target parcels with the highest ratio of environmental benefits to land costs. The standard strategy selects parcels even if there is little probability that the parcel would otherwise be converted. Our new strategy targets parcels to minimize the benefit loss from land conversion, which weights parcel based on initial benefit endowment and expected probability of land use conversion. The empirical analysis focuses on targeting conservation easements in the exurban region of Sonoma County, CA, in which extensively-managed, developable parcels (i.e. pasture and forest areas) with environmental benefits are being converted to residential use and vineyards. Spatially-explicit modeling approaches are employed to estimate land values and likelihood of land use conversion, according to heterogeneous parcel site characteristics, for all developable parcels. Our results indicate that benefit-cost targeting is biased toward low cost parcels, since it ignores the variation in likelihood of future land use conversion. This inefficiency for benefit-cost targeting arises from the positive relationship that typically exists between likelihood of land use change and value of development rights. Hence, some parcels with poor land quality or remote accessibility to urban centers would have de facto conservation, and therefore do not warrant targeting of conservation funds, despite the low cost of protection. Our new targeting strategy balances the countervailing factors of land values and likelihood of land use conversion.
Prefab posets` Whitney numbers
Creators: name: Kwasniewski, A. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C20, 11C08, 17B56

description: We introduce a natural partial order in structurally natural finite subsets the cobweb prefabs sets recently constructed by the present author. Whitney numbers of the second kind of the corresponding subposet which constitute Stirling-like numbers` triangular array are then calculated and the explicit formula for them is provided. Next - in the second construction - we endow the set sums of prefabiants with such an another partial order that their their bell like numbers include fibonacci triad sequences introduced recently by the present author in order to extend famous relation between binomial newton coefficients and fibonacci numbers onto the infinity of their relatives among which there are also the fibonacci triad sequences and binomial-like coefficients (incidence coefficients included).
description: 8 pages, 5 figures
THE OPTIMAL DEPLETION OF AN EXHAUTIBLE RESOURCE IN A DYNAMIC GENERAL EQUILIBRIUM MODEL
Creators: name: Gaitan, Beatriz
name: Tol, Richard S.J.
name: Yetkiner, I. Hakan
name: Gaitan, Beatriz
name: Tol, Richard S.J.
name: Yetkiner, I. Hakan
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: The validity of the Hotelling's rule, the fundamental theorem of nonrenewable resource economics, is limited by its partial equilibrium nature. One symptom of this limitation may be the disagreement between the empirical evidence, showing stable or declining resource prices, and the rule, predicting exponentially increasing prices. In this paper, we study the optimal depletion of a nonrenewable resource in a dynamic general equilibrium framework. We show that in, the long run, the price of a nonrenewable (i) is constant when the nonrenewable is essential in production, and (ii) it increases only if the rate of return of capital is larger than the capital depreciation rate and if the non-renewable is an inessential input in production. We believe that our model offers a theoretical explanation to non-growing nonrenewable prices and hence at least partially solves the paradox between the Hotelling's rule and the empirical regularities. We also show that two factors play a crucial role in determining the long run behavior of non-renewable prices, namely the elasticity of substitution between input factors, and the long run behavior of the real interest rate. Another major achievement of this study is the full analytical solution of the model under a Cobb-Douglas technology.
Resonant Readout of a Persistent Current Qubit
Creators: name: Lee, Janice C.
name: Oliver, William D.
name: Orlando, Terry P.
name: Berggren, Karl K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have implemented a resonant circuit that uses a SQUID as a flux-sensitive Josephson inductor for qubit readout. In contrast to the conventional switching current measurement that generates undesired quasi-particles when the SQUID switches to the voltage state, our approach keeps the readout SQUID biased along the supercurrent branch during the measurement. By incorporating the SQUID inductor in a high-Q resonant circuit, we can distinguish the two flux states of a niobium persistent-current (PC) qubit by observing a shift in the resonant frequency of both the magnitude and the phase spectra. The readout circuit was also characterized in the nonlinear regime to investigate its potential use as a nonlinear amplifier.
description: 4 pages, 2004 ASC Proceedings
EXPLAINING ECONOMIC LINKAGES BETWEEN FARMS AND LOCAL COMMUNITIES: LOOKING BEYOND FARM SIZE
Creators: name: Roe, Brian E.
name: Stockberger, Aaron
name: Roe, Brian E.
name: Stockberger, Aaron
Publisher: name: Unknown
Year: 2004
Subjects: Institutional and Behavioral Economics

description: We explore the economic linkage between farms and neighboring communities using primary data collected from a state-wide cross section of 461 dairy farms. Empirical results implicate not only farm characteristics such as size, operator tenure and ethnicity but also the characteristics of the local community.
Two-photon physics
Creators: name: Vanderhaeghen, Marc
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is reviewed how Compton scattering sum rules relate low-energy nucleon structure quantities to the nucleon excitation spectrum. In particular, the GDH sum rule and recently proposed extensions of it will be discussed. These extensions are sometimes more calculationally robust, which may be an advantage when estimating the chiral extrapolations of lattice QCD results, such as for anomalous magnetic moments. Subsequently, new developments in our description of the nucleon excitation spectrum will be discussed, in particular a recently developed chiral effective field theory framework for the $Δ(1232)$-resonance region. Within this framework, we discuss results on $N$ and $Δ$ masses, the $γN Δ$ transition and the $Δ$ magnetic dipole moment.
description: 10 pages, prepared for proceedings of Symposium on 20 Years of Physics at the Mainz Mikrotron
The relation between the diffuse X-ray luminosity and the radio power of the central AGN in galaxy groups
Creators: name: Pasini, T.
name: Brūggen, M.
name: de Gasperin, F.
name: Bîrzan, L.
name: O'Sullivan, E.
name: Finoguenov, A.
name: Jarvis, M.
name: Gitti, M.
name: Brighenti, F.
name: Whittam, I. H.
name: Collier, J. D.
name: Heywood, I.
name: Gozaliasl, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Our understanding of how AGN feedback operates in galaxy clusters has improved in recent years owing to large efforts in multi-wavelength observations and hydrodynamical simulations. However, it is much less clear how feedback operates in galaxy groups, which have shallower gravitational potentials. In this work, using very deep VLA and new MeerKAT observations from the MIGHTEE survey, we compiled a sample of 247 X-ray selected galaxy groups detected in the COSMOS field. We have studied the relation between the X-ray emission of the intra-group medium and the 1.4 GHz radio emission of the central radio galaxy. For comparison, we have also built a control sample of 142 galaxy clusters using ROSAT and NVSS data. We find that clusters and groups follow the same correlation between X-ray and radio emission. Large radio galaxies hosted in the centres of groups and merging clusters increase the scatter of the distribution. Using statistical tests and Monte-Carlo simulations, we show that the correlation is not dominated by biases or selection effects. We also find that galaxy groups are more likely than clusters to host large radio galaxies, perhaps owing to the lower ambient gas density or a more efficient accretion mode. In these groups, radiative cooling of the ICM could be less suppressed by AGN heating. We conclude that the feedback processes that operate in galaxy clusters are also effective in groups.
description: 15 pages, 14 figures
Re-investigation of neutron capture by 84Kr and 86Kr in the s-process nucleosynthesis
Creators: name: Kabir, Abdul
name: Abideen, Zain Ul
name: Nabi, Jameel-Un
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The thermonuclear reaction rates and Maxwellian averaged cross sections (MACS) for the 84Kr(n,γ) 85Kr and 86Kr(n,γ) 87Kr processes were examined using the statistical model code Talys v1.96. The effects of nuclear level densities (NLDs) on Maxwellian averaged cross sections and neutron capture rates are examined both quantitatively and qualitatively. The present Talys based MACS and radiative capture rates for 84Kr(n,γ) 85Kr and 86Kr(n,γ) 87Kr processes agree well with the earlier reported findings. The statistical models nuclear properties (level density and gamma ray strength) were fine tuned to reproduce the existing experimental nuclear data.
description: 11 Pages 1 table 2 figures. arXiv admin note: substantial text overlap with arXiv:2410.06603
Interacting quantum mixtures for precision atom interferometry
Creators: name: Corgier, Robin
name: Loriani, Sina
name: Ahlers, Holger
name: Posso-Trujillo, Katerine
name: Schubert, Christian
name: Rasel, Ernst M.
name: Charron, Eric
name: Gaaloul, Naceur
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: Atomic Physics

description: We present a source engineering concept for a binary quantum mixture suitable as input for differential, precision atom interferometry with drift times of several seconds. To solve the non-linear dynamics of the mixture, we develop a set of scaling approach equations and verify their validity contrasting it to the one of a system of coupled Gross-Pitaevskii equations. This scaling approach is a generalization of the standard approach commonly used for single species. Its validity range is discussed with respect to intra- and inter-species interaction regimes. We propose a multi-stage, non-linear atomic lens sequence to simultaneously create dual ensembles with ultra-slow kinetic expansion energies, below 15 pK. Our scheme has the advantage of mitigating wave front aberrations, a leading systematic effect in precision atom interferometry.
description: 38 pages, 7 figures