cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pairing in Nuclei
Creators: name: Satula, Wojciech
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Simple generic aspects of nuclear pairing in homogeneous medium as well as in finite nuclei are discussed. It is argued that low-energy nuclear structure is not sensitive enough to resolve fine details of nuclear nucleon-nucleon (NN) interaction in general and pairing NN interaction in particular what allows for regularization of the ultraviolet (high-momentum) divergences and a consistent formulation of effective superfluid local theory. Some aspects of (dis)entanglement of pairing with various other effects as well as forefront ideas concerning isoscalar pairing are also briefly discussed.
description: Invited talk presented at the International Conference on Finite Fermionic Systems, Nilsson Model 50 Years,Lund, Sweden, June 14-18, 2005, 7 LaTeX pages, 4 encapsulated postscript figures
DEMOCRACY, RENT SEEKING, PUBLIC SPENDING AND GROWTH
Creators: name: Mohtadi, Hamid
name: Roe, Terry L.
name: Mohtadi, Hamid
name: Roe, Terry L.
Publisher: name: Unknown
Year: 2001
Subjects: Political Economy

description: Does democratization imply faster growth, less corruption and less inefficiency? Past studies yield ambiguous results on the effects of democracy on economic performance and growth. We develop a simple two-sector endogenous growth model that shows both very young and mature democracies grow faster than countries in mid stages of democratization, producing a 'U' effect. This effect results from the pattern of rent seeking as it diverts from the provision of public goods. Rent-seekers act as monopolistic competitors. Initially, more democracy increases their number, raising aggregate rents. However, rents per rent-seeker fall with the number of rent seekers, aggregate rents fall in mature democracies. Thus, rents show an 'inverted-U' effects in relation to democracy. We find fairly robust supportive evidence for the latter.
Exceptional Supersymmetric Standard Model
Creators: name: King, S. F.
name: Moretti, S.
name: Nevzorov, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss some phenomenological aspects of an $E_6$ inspired supersymmetric standard model with an extra $U(1)_{N}$ gauge symmetry under which right-handed neutrinos have zero charge, allowing a conventional see-saw mechanism. The $μ$ problem is solved in a similar way to the NMSSM, but without the accompanying problems of singlet tadpoles or domain walls. The above exceptional supersymmetric standard model (ESSM) involves the low energy matter content of three 27 representations of $E_6$, which is broken at the GUT scale, and allows gauge coupling unification due to an additional pair of Higgs-like doublets. The ESSM predicts a $Z'$ boson and exotic quarks which, if light enough, will provide spectacular new physics signals at the LHC. We study the LHC phenomenology of the $Z'$ and extra quarks, including their production and decay signatures particular to the ESSM. We also discuss the two-loop upper bound on the mass of the lightest CP-even Higgs boson, and show that it can be significantly heavier than in either the MSSM or the NMSSM.
description: 12 pages, 3 figures, some minor changes to the text
Velocity selection of ultra-cold atoms with Fabry-Perot laser devices: improvements and limits
Creators: name: Ruschhaupt, A.
name: Delgado, F.
name: Muga, J. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss a method to select the velocities of ultra-cold atoms with a modified Fabry-Perot type of device made of two effective barriers and a well created, respectively, by blue and red detuned lasers. The laser parameters may be used to select the peak and width of the transmitted velocity window. In particular, lowering the central well provides a peak arbitrarily close to zero velocity having a minimum but finite width. The low-energy atomic scattering off this laser device is parameterized and approximate formulae are found to describe and explain its behaviour.
description: 4 pages, 5 figures
Spin dynamics of low-dimensional excitons due to acoustic phonons
Creators: name: Thilagam, A.
name: Lohe, M. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the spin dynamics of excitons interacting with acoustic phonons in quantum wells, quantum wires and quantum disks by employing a multiband model based on the $4\times4$ Luttinger Hamiltonian. We also use the Bir-Pikus Hamiltonian to model the coupling of excitons to both longitudinal acoustic phonons and transverse acoustic phonons, thereby providing us with a realistic framework in which to determine details of the spin dynamics of excitons. We use a fractional dimensional formulation to model the excitonic wavefunctions and we demonstrate explicitly the decrease of spin relaxation time with dimensionality. Our numerical results are consistent with experimental results of spin relaxation times for various configurations of the GaAs/Al$_{0.3}$Ga$_{0.7}$As material system. We find that longitudinal and transverse acoustic phonons are equally significant in processes of exciton spin relaxations involving acoustic phonons.
description: 24 pages, 3 figures
Triptychus litosbathron Pimenta, Santos & Absalao 2008
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Pyramidellidae
Triptychus
Triptychus litosbathron

description: litosbathron, Triptychus Pimenta, Santos & Absalão, 2008
 Triptychus litosbathron Pimenta, Santos & Absalão, 2008: 180 (fig. 4E–I).
Gastropoda, Pyramidellidae
 Holotype: MZSP 77065.
 Paratype 1: MZSP 77066.
 Paratype 2: MZSP 86686.
 Paratypes 3 (5 spc): MZSP 86688.
 Paratype 4: MZSP 86691.
 Paratype 5: MZSP 86693.
 Paratype 6: MZSP 86694.
 Paratype 7: MZSP 86695.
 Localities: Brazil; 1) off Paraná, 25°15.76' S, 45°04.62'W, PADCT sta. 6577, 124 m depth (type locality); 2) 24°40.75' S, 44°50.82' W, REVIZEE sta. 6677, 137 m; 3) 24°00.95' S, 43°55.54' W, REVIZEE sta. 6662, 135 m; 4) off São Paulo, 24°17.13' S, 44°12.15' W, REVIZEE sta. 6666, 163 m; 5) 26°15' S, 45°53' W, PADCT sta. 6641, 130 m; 6) 26°17.134' S, 46°41.788' W, REVIZEE sta. 6695, 153 m; 7) 27°48.07' S, 47°24.04' W, PADCT sta. 6606, 175 m.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on pages 34-35, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
[Brev til DKNVS]
Creators: name: Birch, Paul Hansen
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1826

description: Oversender en avskrift og oversettelse av en Gulatingsdom, ca. 500 år gammel, samt en oversettelse av et dokument fra kong Magnus Smeks tid
Quantum Conformance Test
Creators: name: Ortolano, Giuseppe
name: Boucher, Pauline
name: Degiovanni, Ivo Pietro
name: Losero, Elena
name: Genovese, Marco
name: Berchera, Ivano Ruo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce a protocol addressing the conformance test problem, which consists in determining whether a process under test conforms to a reference one. We consider a process to be characterized by the set of end-product it produces, which is generated according to a given probability distribution. We formulate the problem in the context of hypothesis testing and consider the specific case in which the objects can be modeled as pure loss channels. We demonstrate theoretically that a simple quantum strategy, using readily available resources and measurement schemes in the form of two-mode squeezed vacuum and photon-counting, can outperform any classical strategy. We experimentally implement this protocol, exploiting optical twin beams, validating our theoretical results, and demonstrating that, in this task, there is a quantum advantage in a realistic setting.
Non-Abelian Webs of Walls
Creators: name: Eto, Minoru
name: Isozumi, Youichi
name: Nitta, Muneto
name: Ohashi, Keisuke
name: Sakai, Norisuke
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Domain wall junctions are studied in N=2 supersymmetric U(Nc) gauge theory with Nf(>Nc) flavors. We find that all three possibilities are realized for positive, negative and zero junction charges. The positive junction charge is found to be carried by a topological charge in the Hitchin system of an SU(2) gauge subgroup. We establish rules of the construction of the webs of walls. Webs can be understood qualitatively by grid diagram and quantitatively by associating moduli parameters to web configurations.
description: 15 pages, 8 figures, references added
Towards a deterministic model of planetary formation. III. Mass distribution of short-period planets around stars of various masses
Creators: name: Ida, S.
name: Lin, D. N. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of a recently discovered close-in Neptune-mass planet around GJ436 poses a challenge to the current theories of planet formation. Based on the sequential accretion hypothesis and the standard theory of gap formation and orbital migration, we show that around M dwarf stars, close-in Neptune-mass ice-giant planets may be relatively common, while close-in Jupiter-mass gas-giant planets are relatively rare. The mass distribution of close-in planets generally has two peaks at about Neptune mass and Jupiter mass. The lower-mass peak takes the maximum frequency for M dwarfs. Around more massive solar-type stars (G dwarfs), the higher-mass peak is much more pronounced. These are because planets tend to undergo type II migration after fully accreting gas around G dwarfs while they tend to migrate faster than gas accretion around M stars. Close-in Neptune-mass planets may also exist around G dwarfs, though they tend to be mostly composed of silicates and iron cores and their frequency is expected to be much smaller than that of Neptune-mass planets around M dwarfs and that of gas giants around G dwarfs. We also show that the conditions for planets' migration due to their tidal interaction with the disk and the stellar-mass dependence in the disk-mass distribution can be calibrated by the mass distribution of short-period planets around host stars with various masses.
description: accepted for publication in Astrophys. J
Flabellina lucianae Dacosta 2007
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Nudibranchia
Flabellinidae
Flabellina
Flabellina lucianae

description: lucianae, Flabellina engeli Dacosta, Cunha, Simone & Schrödl, 2007
 Flabellina engeli lucianae Dacosta, Cunha, Simone & Schrödl, 2007: 340–343 (figs 1–10). Gastropoda, Flabellinidae
 Holotype: MZSP 48251.
 Locality: Brazil, Rio de Janeiro, Paraty, Lula Beach, 23º11'38.5" S, 44º38'06.5" W, 4 m depth, 10 Dec. 2005.
 Collector: L.R. Simone.
 Preservation: 70% ethanol.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 35, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Baryogenesis and CP-Violating Domain Walls in the Background of a Magnetic Field
Creators: name: Campanelli, Leonardo
name: Cea, Paolo
name: Fogli, Gian Luigi
name: Tedesco, Luigi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Within the domain wall-mediated electroweak baryogenesis, we study fermion scattering off a CP-violating wall in the background of an uniform magnetic field. In particular, we calculate the asymmetry between the reflection coefficients for right-handed and left-handed chiral fermions, ΔR = R_{R \to L} - R_{L \to R}, which is of relevance to non local baryogenesis mechanisms.
description: replaced with revised conclusion version, to be published in JCAP
Electrostatic Interactions in Strongly-Coupled Soft Matter
Creators: name: Naji, Ali
name: Jungblut, Swetlana
name: Moreira, Andre G.
name: Netz, Roland R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Charged soft-matter systems--such as colloidal dispersions and charged polymers--are dominated by attractive forces between constituent like-charged particles when neutralizing counterions of high charge valency are introduced. Such counter-intuitive effects indicate strong electrostatic coupling between like-charged particles, which essentially results from electrostatic correlations among counterions residing near particle surfaces. In this paper, the attraction mechanism and the structure of counterionic correlations are discussed in the limit of strong coupling based on recent numerical and analytical investigations and for various geometries (planar, spherical and cylindrical) of charged objects.
description: 26 pages, 13 figures
Carbohydrates and colorectal cancer risk among Chinese in North America
Creators: name: Borugian, Marilyn Jean
Publisher: name: University of British Columbia
Year: 2009

description: Background. Previous studies have analysed total carbohydrates as a dietary risk factor for colorectal cancer (CRC), but obtained conflicting results, perhaps due in part to the embedded negative confounder, fiber. The aim of this study is to analyse the non-fiber ("effective") carbohydrate component (eCarb) separately, and to test the hypothesis that effective carbohydrate consumption is direcdy related to colorectal cancer risk. Method. The data (473 cases, 1192 controls) are from a large, multi-centre case-control study of migrant Chinese. Multivariate logistic regression was used to perform a secondary analysis, controlling for age, fat, protein, fiber, physical inactivity, calcium, retinol, body mass index, family history, education, years in North America, and for women, parity, age at menopause, hormone replacement therapy use and oral contraceptive use. The model was used to calculate odds ratios (OR) and 95% confidence intervals (CI) to estimate risk from increasing eCarb consumption among subgroups by gender and cancer site. Results. A statistically significant positive association was observed between eCarb consumption and risk of CRC in both males (OR=2.02 from lowest to highest fertile of eCarb consumption, 95%CI=1.28, 3.19) and females (OR=2.54, 95%CI-1.44, 4.46). A striking gender difference in cancer site affected was observed, with risk concentrated in the right colon for women (OR=7.35, 95%CI=2.60, 20.80), and in the rectum for men (OR=2.78, 95%CI= 1.40, 5.54). The other-sites for each gender showed little or no significant association of eCarb consumption with risk. Onset of menopause had a significant protective effect, and there was a near-significant interaction of menopause with eCarb consumption (p=0.07). Conclusion. Increased eCarb consumption is associated with increased risk of colorectal cancer in both genders. The right colon risk is greatest in females, while the rectal risk is greatest in males. In females, colorectal cancer risk may be reduced by onset of menopause.
Statistical mechanics and Vlasov equation allow for a simplified hamiltonian description of single pass free electron laser saturated dynamics
Creators: name: Antoniazzi, Andrea
name: Elskens, Yves
name: Fanelli, Duccio
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A reduced Hamiltonian formulation to reproduce the saturated regime of a single pass free electron laser, around perfect tuning, is here discussed. Asymptotically, $N\_m$ particles are found to organize in a dense cluster, that evolves as an individual massive unit. The remaining particles fill the surrounding uniform sea, spanning a finite portion of phase space, approximately delimited by the average momenta $ω\_+$ and $ω\_-$. These quantities enter the model as external parameters, which can be self-consistently determined within the proposed theoretical framework. To this aim, we make use of a statistical mechanics treatment of the Vlasov equation, that governs the initial amplification process. Simulations of the reduced dynamics are shown to successfully capture the oscillating regime observed within the original $N$-body picture.
description: European Physical Journal B in press (2006) in press
Long Strings, Anomaly Cancellation, Phase Transitions, T-duality and Locality in the 2d Heterotic String
Creators: name: Seiberg, Nathan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the noncritical two-dimensional heterotic string. Long fundamental strings play a crucial role in the dynamics. They cancel anomalies and lead to phase transitions when the system is compactified on a Euclidean circle. A careful analysis of the gauge symmetries of the system uncovers new subtleties leading to modifications of the worldsheet results. The compactification on a Euclidean thermal circle is particularly interesting. It leads us to an incompatibility between T-duality (and its corresponding gauge symmetry) and locality.
description: 36 pages, 2 figures
A GLOBAL ANALYSIS OF AGRICULTURAL TRADE REFORM IN WTO MEMBER COUNTRIES
Creators: name: Diao, Xinshen
name: Somwaru, Agapi
name: Roe, Terry L.
name: Diao, Xinshen
name: Somwaru, Agapi
name: Roe, Terry L.
Publisher: name: Unknown
Year: 2001
Subjects: International Relations/Trade

description: The effect on production, trade and well-being from the granting of market access, removing export subsidies, and eliminating trade-distorting forms of direct support to farmers in WTO member countries is analyzed from a world-wide general equilibrium perspective using the most recently available data. The results suggest that removing trade barriers, subsidies and support will cause aggregate world prices of agricultural commodities to rise by over 11 percent relative to an index of all other prices. Agricultural support and protection in the developed countries is found to be the major cause of low agricultural prices, and implicitly, a tax on net agricultural exporters in developing countries. Livestock product prices are likely to increase the most from the reform of agricultural policies. Reform increase world trade in agricultural commodities, but the level of total agricultural production is left almost unchanged. In the short to medium term, some net agricultural importing countries are likely to suffer a welfare loss due to an adverse change in their terms of trade that reform causes. However, in the longer-run, reform of agricultural policies is found to benefit almost all countries and developing countries in particular due to the change reform induces in their pattern of investment, growth in capital stock, and to growth in their total factor productivity.
Control of Local Relaxation Behavior in Closed Bipartite Quantum Systems
Creators: name: Schmidt, Harry
name: Mahler, Guenter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the decoherence of a spin 1/2 subsystem weakly coupled to an environment of many spins 1/2 with and without mutual coupling. The total system is closed, its state is pure and evolves under Schroedinger dynamics. Nevertheless, the considered spin typically reaches a quasi-stationary equilibrium state. Here we show that this state depends strongly on the coupling to the environment on the one hand and on the coupling within the environmental spins on the other. In particular we focus on spin star and spin ring-star geometries to investigate the effect of intra-environmental coupling on the central spin. By changing the spectrum of the environment its effect as a bath on the central spin is changed also and may even be adjustable to some degree. We find that the relaxation behavior is related to the distribution of the energy eigenstates of the total system. For each of these relaxation modes there is a dual mode for which the resulting subsystem approaches an inverted state occupation probability (negative temperature).
description: RevTeX, 7 pages, 12 figures
ATLAS sensitivity to top quark and W boson polarization in $t\bar{t}$ events
Creators: name: Hubaut, F.
name: Monnier, E.
name: Pralavorio, P.
name: Simak, V.
name: Smolek, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Stringent tests on top quark production and decay mechanisms are provided by the measurement of the top quark and W boson polarization. This paper presents a detailed study of these two measurements with the ATLAS detector, in the semileptonic (ttbar -> W W b bbar -> l nu j1 j2 b bbar) and dileptonic (ttbar -> W W b bbar -> l nu l nu b bbar) ttbar channels. It is based on leading-order Monte Carlo generators and on a fast simulation of the detector. A particular attention is paid to the systematic uncertainties, which dominate the statistical errors after one LHC year at low luminosity (10 fb^{-1}), and to the background estimate. Combining results from both channel studies, the longitudinal component of the W polarization (F\_0) can be measured with a 2% accuracy and the right-handed component (F\_R) with a 1% precision with 10 fb^{-1}. Even though the top quarks in ttbar pairs are not polarized, a large asymmetry is expected within the Standard Model in the like-spin versus unlike-spin pair production. A 4% precision on this asymmetry measurement is possible with 10 fb^{-1}, after combining results from both channel studies. These promising results are converted in a sensitivity to new physics, such as tWb anomalous couplings, top decay to charged Higgs boson, or new s-channels (heavy resonance, gravitons) in ttbar production.
description: 41+2 pages, 20 figures, ATLAS scientific note SN-ATLAS-2005-052
SOURCES OF GROWTH AND SUPPLY RESPONSE: A CROSS-COMMODITY ANALYSIS OF CHINA'S GRAIN SECTOR
Creators: name: Colby, Hunter
name: Diao, Xinshen
name: Somwaru, Agapi
name: Colby, Hunter
name: Diao, Xinshen
name: Somwaru, Agapi
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: supply response
subject: economic growth
subject: productivity
subject: China

description: A growth accounting method is used to analyze the sources of growth in China's rice, wheat, corn and soybeans, the four most important crops in China's grain sector, during 1978-97. A large TFP contribution to growth in grain production is found in the period immediately following China's rural economic reform (1978-85). In recent years the growth rate of TFP falls sharply, contributing less than 20 percent of growth in grain production, as increased use of inputs became the major engine of growth. If the current government policy environment remains unchanged, China's grain production will become increasingly costly and constrain future growth and competitiveness in world grain markets. The supply response of the four grains is estimated using a multiproduct framework. The parametric approach shows a joint production system in China's grain sector and gross complementarity in the effect of a price change on the supply of outputs and demand for inputs.
Shuffling cards, factoring numbers, and the quantum baker's map
Creators: name: Lakshminarayan, Arul
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is pointed out that an exactly solvable permutation operator, viewed as the quantization of cyclic shifts, is useful in constructing a basis in which to study the quantum baker's map, a paradigm system of quantum chaos. In the basis of this operator the eigenfunctions of the quantum baker's map are compressed by factors of around five or more. We show explicitly its connection to an operator that is closely related to the usual quantum baker's map. This permutation operator has interesting connections to the art of shuffling cards as well as to the quantum factoring algorithm of Shor via the quantum order finding one. Hence we point out that this well-known quantum algorithm makes crucial use of a quantum chaotic operator, or at least one that is close to the quantization of the left-shift, a closeness that we also explore quantitatively.
description: 12 pgs. Substantially elaborated version, including a new route to the quantum bakers map. To appear in J. Phys. A
DEPARTMENT PUBLICATIONS LIST 2001
Creators: name: Kill, Sharon
name: Letnes, Louise
name: Kill, Sharon
name: Letnes, Louise
Publisher: name: Unknown
Year: 2002
Subjects: Teaching/Communication/Extension/Profession

description: This publication is a list of staff papers, extension publications, Economic Development Center bulletins, Center for International Food and Agricultural Policy papers, The Retail Food Industry Center working papers, journal articles, books, chapters, monographs, speeches, and theses published by the University of Minnesota Department of Applied Economics in 2001.
Uncovering collective listening habits and music genres in bipartite networks
Creators: name: Lambiotte, R.
name: Ausloos, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this paper, we analyze web-downloaded data on people sharing their music library, that we use as their individual musical signatures (IMS). The system is represented by a bipartite network, nodes being the music groups and the listeners. Music groups audience size behaves like a power law, but the individual music library size is an exponential with deviations at small values. In order to extract structures from the network, we focus on correlation matrices, that we filter by removing the least correlated links. This percolation idea-based method reveals the emergence of social communities and music genres, that are visualised by a branching representation. Evidence of collective listening habits that do not fit the neat usual genres defined by the music industry indicates an alternative way of classifying listeners/music groups. The structure of the network is also studied by a more refined method, based upon a random walk exploration of its properties. Finally, a personal identification - community imitation model (PICI) for growing bipartite networks is outlined, following Potts ingredients. Simulation results do reproduce quite well the empirical data.
description: submitted to PRE
DEPARTMENT PUBLICATIONS LIST 2002
Creators: name: Letnes, Louise
name: Kill, Sharon
name: Letnes, Louise
name: Kill, Sharon
Publisher: name: Unknown
Year: 2003
Subjects: Teaching/Communication/Extension/Profession

description: This publication is a list of staff papers, extension publications, Economic Development Center bulletins, Center for International Food and Agricultural Policy papers, The Food Industry Center working papers, journal articles, books, chapters, monographs, speeches, and theses published by the University of Minnesota Department of Applied Economics in 2002.
Rendtorff, Trutz; Rich, Artur: Humane Gesellschaft
Creators: name: Linnenbrink, Günter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 19 Nr. 4 (1970): Ökumenische Rundschau, Band 19, Heft 4
Nanotube-Metal Junctions: 2- and 3- Terminal Electrical Transport
Creators: name: Ke, San-Huang
name: Yang, Weitao
name: Baranger, Harold U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We address the quality of electrical contact between carbon nanotubes and metallic electrodes by performing first-principles calculations for the electron transmission through ideal 2- and 3-terminal junctions, thus revealing the physical limit of tube-metal conduction. The structural model constructed involves surrounding the tube by the metal atoms of the electrode as in most experiments; we consider metallic (5,5) and n-doped semiconducting (10,0) tubes surrounded by Au or Pd. In the case of metallic tubes, the contact conductance is shown to approach the ideal 4e^2/h in the limit of large contact area. For three-terminals, the division of flux among the different transmission channels depends strongly on the metal material. A Pd electrode has nearly perfect tube-electrode transmission and therefore turns off the straight transport along the tube. Our results are in good agreement with some recent experimental reports and clarify a fundamental discrepancy between theory and experiment.
description: 5 pages, 5 figures, published version: some modified figures and clarifications in the text
The role of complement in the immunological demyelination of the adult rat spinal cord
Creators: name: Bourque, Jason Alain
Publisher: name: University of British Columbia
Year: 2009

description: Previous work in Dr. John Steeves' laboratory has described a transient, myelinspecific, galactocerebroside (GalC) antibody-mediated, complement-dependent protocol that suppresses the onset of myelination in embryonic birds, and focally demyelinates the central nervous system (CNS) of adult birds and rodents after intraspinal infusion. After spinal injury, this procedure has been observed to facilitate axonal regeneration, often with accompanying recovery of behavior. In order to identify the relative necessity of different complement proteins in this protocol, I assessed the effects of infusions of GalC-antibody and human serum deficient for a particular complement protein (i.e. C3, C4, C5, or Factor B was immunoadsorbed prior to infusion) on spinal myelin. Spinal treated tissue was evaluated ultrastructurally using a transmission electron microscope. Upon removal of the C3 protein, common to both the classical and alternative complement pathways, or the C4 protein, a classical pathway protein, normal myelin was observed (i.e. no demyelination). Using serum deficient in Factor B, an alternative pathway protein, demyelination was still observed; in addition, large numbers of macrophages containing myelin debris were present in these regions. These results suggest that the classical serum complement pathway has a fundamental role in this immunological demyelination protocol. Upon removal of C5, a Membrane Attack Complex (MAC) protein, substantial demyelination was again observed, once more accompanied by macrophages, suggesting that some of the demyelination may be occurring through macrophage-mediated events involving complement-derived anaphylatoxins and membrane receptors. Taken together, these findings suggest that the classical pathway of complement activation and anti-GalC IgG antibody are sufficient, and thus the alternative pathway and the MAC are not necessary, for focal demyelination of the adult rat spinal cord, and that this demyelination occurs in a macrophagedependent manner.
On a transformation between hierarchies of integrable equations
Creators: name: Gurses, Metin
name: Zheltukhin, Kostyantyn
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A transforation between a hierarchy of integrable equations arising from the standard $R$-matrix construction on the algebra of differential operators and a hierarchy of integrable equations arising from a deformation of the standard $R$-matrix is given.
description: 8 pages
Systematizing and addressing theory uncertainties of unitarization with the Inverse Amplitude Method
Creators: name: Salas-Bernárdez, Alexandre
name: Llanes-Estrada, Felipe J.
name: Escudero-Pedrosa, Juan
name: Oller, Jose Antonio
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Effective Field Theories (EFTs) constructed as derivative expansions in powers of momentum, in the spirit of Chiral Perturbation Theory (ChPT), are a controllable approximation to strong dynamics as long as the energy of the interacting particles remains small, as they do not respect exact elastic unitarity. This limits their predictive power towards new physics at a higher scale if small separations from the Standard Model are found at the LHC or elsewhere. Unitarized chiral perturbation theory techniques have been devised to extend the reach of the EFT to regimes where partial waves are saturating unitarity, but their uncertainties have hitherto not been addressed thoroughly. Here we take one of the best known of them, the Inverse Amplitude Method (IAM), and carefully following its derivation, we quantify the uncertainty introduced at each step. We compare its hadron ChPT and its electroweak sector Higgs EFT applications. We find that the relative theoretical uncertainty of the IAM at the mass of the first resonance encountered in a partial-wave is of the same order in the counting as the starting uncertainty of the EFT at near-threshold energies, so that its unitarized extension should \textit{a priori} be expected to be reasonably successful. This is so provided a check for zeroes of the partial wave amplitude is carried out and, if they appear near the resonance region, we show how to modify adequately the IAM to take them into account.
description: Revised version, 47 pages in SciPost format, with 13 captioned figures
DEPARTMENT PUBLICATIONS LIST 1999
Creators: name: Letnes, Louise
name: Kill, Sharon
name: Letnes, Louise
name: Kill, Sharon
Publisher: name: Unknown
Year: 2000
Subjects: Teaching/Communication/Extension/Profession

description: This publication is a list of staff papers, extension publications, Economic Development Center bulletins, Center for International Food and Agricultural Policy papers, The Retail Food Industry Center working papers, journal articles, books, chapters, monographs, speeches, and theses published by the University of Minnesota, Department of Applied Economics in 1999.
From sand to networks: a study of multi-disciplinarity
Creators: name: Lambiotte, R.
name: Ausloos, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this paper, we study empirically co-authorship networks of neighbouring scientific disciplines, and describe the system by two coupled networks. By considering a large time window, we focus on the properties of the interface between the disciplines. We also focus on the time evolution of the co-authorship network, and highlight a rich phenomenology including first order transition and cluster bouncing and merging. Finally, we present a ferro- electric-like model (CDIM), involving bond redistribution between the nodes, that reproduces qualitatively the structuring of the system in homogeneous phases
description: submitted to europhys. lett
Aclis macrostoma Barros, Lima & Francisco 2007
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Aclididae
Aclis
Aclis macrostoma

description: macrostoma, Aclis Barros, Lima & Francisco, 2007
 Aclis macrostoma Barros, Lima & Francisco, 2007: 62–63 (figs 1–6).
Gastropoda, Aclididae
 Holotype: MZSP 77988.
 Paratype 1: MZSP 77989.
 Paratypes 2 (2 spc): MZSP 77990.
 Localities: Brazil, off Rio Grande do Norte, continental slope off northeastern Brazil, muddy bottom, D-26, 06°14'04" S, 34°52'33" W, 510 m depth, 26 Nov. 2001; 1) muddy bottom, D-23, 04°51'00" S, 35°06'46" W, 375 m, 24 Nov. 2001; 2) muddy bottom, D-27, 06°14'24" S, 34°52'06" W, 500 m, 26 Nov. 2001.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 35, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Deconfinement in the presence of a Fermi surface
Creators: name: Kim, Ki-Seok
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: U(1) gauge theory of non-relativistic fermions interacting via compact U(1) gauge fields in the presence of a Fermi surface appears as an effective field theory in low dimensional quantum antiferromagnetism and heavy fermion liquids. We investigate deconfinement of fermions near the Fermi surface in the effective U(1) gauge theory. Our present analysis benchmarks the recent investigation of quantum electrodynamics in two space and one time dimensions ($QED_3$) by Hermele et al. [Phys. Rev. B {\bf 70}, 214437 (2004)]. Utilizing a renormalization group analysis, we show that the effective U(1) gauge theory with a Fermi surface has a stable charged fixed point. Remarkably, the renormalization group equation for an internal charge $e$ (the coupling strength between non-relativistic fermions and U(1) gauge fields) reveals that the conductivity $σ$ of fermions near the Fermi surface plays the same role as the flavor number $N$ of massless Dirac fermions in $QED_3$. This leads us to the conclusion that if the conductivity of fermions is sufficiently large, instanton excitations of U(1) gauge fields can be suppressed owing to critical fluctuations of the non-relativistic fermions at the charged fixed point. As a result a critical field theory of non-relativistic fermions interacting via noncompact U(1) gauge fields is obtained at the charged fixed point.
Department Publications List 2005
Creators: name: Letnes, Louise
name: Kill, Sharon
name: Letnes, Louise
name: Kill, Sharon
Publisher: name: Unknown
Year: 2006
Subjects: Teaching/Communication/Extension/Profession

description: This publication is a list of staff papers, extension publications, Center for International Food and Agricultural Policy papers, The Food Industry Center working papers, Economic Development Center papers, Center for Farm Financial Management papers, Minnesota Council on Economic Education publications, journal articles, books, chapters, monographs, speeches,web pages, computer software and theses authored by members of the University of Minnesota Department of Applied Economics in 2005.
A large spin-up rate measured with INTEGRAL in the High Mass X-ray Binary Pulsar SAXJ2103.5+4545
Creators: name: Sidoli, L.
name: Mereghetti, S.
name: Larsson, S.
name: Chernyakova, M.
name: Kreykenbohm, I.
name: Kretschmar, P.
name: Paizis, A.
name: Santangelo, A.
name: Ferrigno, C.
name: Falanga, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The High Mass X-ray Binary Pulsar SAXJ2103.5+4545 has been observed with INTEGRAL several times during the last outburst in 2002-2004. We report a comprehensive study of all INTEGRAL observations, allowing a study of the pulse period evolution during the recent outburst. We measured a very rapid spin-up episode, lasting 130days, which decreased the pulse period by 1.8s. The spin-up rate, pdot=-1.5e-7 s/s, is the largest ever measured for SAXJ2103.5+4545, and it is among the fastest for an accreting pulsar. The pulse profile shows evidence for temporal variability, apparently not related to the source flux or to the orbital phase. The X-ray spectrum is hard and there is significant emission up to 150keV. A new derivation of the orbital period, based on RXTE data, is also reported.
description: 8 pages, 7 figures, accepted for publication in A&A
TIL MILLAT KOʻZGUSI
Creators: name: Norkulova Nilufar
Publisher: name: Zenodo
Year: 2024

description: Annotatsiya: Ushbu maqola "Millat ko'zgusi" tushunchasini O'zbekiston kontekstida chuqur tahlil qiladi. Maqolada mustaqillik yillarida mamlakatning turli sohalarida erishilgan yutuqlar, jamiyatning ma'naviy-ma'rifiy qiyofasidagi o'zgarishlar, milliy qadriyatlar va zamonaviy talablar uyg'unligi masalalari yoritilgan. Shuningdek, maqolada O'zbekistonning xalqaro maydondagi o'rni, ta'lim, madaniyat, sport sohalaridagi yutuqlar hamda jamiyat oldida turgan dolzarb muammolar va ularni hal etish yo'llari ko'rib chiqilgan. Maqolada millat ko'zgusining ko'p qirrali ekanligi, uning nafaqat yutuqlarni, balki muammolarni ham aks ettirishi zarurligi ta'kidlangan.

Kalit so’zlar: Millat ko'zgusi, O'zbekiston, taraqqiyot, milliy qadriyatlar, islohotlar, ma'naviyat, ta'lim, madaniyat, yoshlar siyosati, xalqaro hamkorlik, korrupsiyaga qarshi kurash, ekologiya, innovatsiyalar, oila instituti, mehnatsevarlik, bag'rikenglik, tarixiy xotira.
Geometric partition functions of cellular systems: Explicit calculation of the entropy in two and three dimensions
Creators: name: Blumenfeld, Raphael
name: Edwards, Sam F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A method is proposed for the characterisation of the entropy of cellular structures, based on the compactivity concept for granular packings. Hamiltonian-like volume functions are constructed both in two and in three dimensions, enabling the identification of a phase space and making it possible to take account of geometrical correlations systematically. Case studies are presented for which explicit calculations of the mean vertex density and porosity fluctuations are given as functions of compactivity. The formalism applies equally well to two- and three-dimensional granular assemblies.
description: 14 pages, 4 figures, to appear in The European Physical Journal E - Soft Matter
Egypt: The Environment for Adjustment to Trade Liberalization
Creators: name: Elshennawy, Abeer
name: Elshennawy, Abeer
Publisher: name: Unknown
Year: 2005
Subjects: International Relations/Trade

description: This paper investigated the potential effect of market failures in labor and capital markets in addition to market failure due to high transaction costs on the transitional path to trade liberalization. All three types of market failure were found to reduce the speed of adjustment to free trade and contribute to high adjustment costs. The paper also examined the consistency of the macroeconomic environment with the objectives of trade liberalization. It is postulated that a macroeconomic environment that is basically recessionary is likely to lead to high adjustment costs
Reading the text of Vancouver: a case study of delayering as an urban analysis method
Creators: name: Voigt, Robert Joshua
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines an urban form analysis method called delayering. This method examines the street network of a city. By plotting the streets in an electronic format and mapping information based on the spatial properties of streets such as those running east west, and overlaying these with other maps, delayering identifies patterns in the streets. This method was presented in a book titled The Urban Text. In the book the findings of an analysis of the City of Chicago were presented to outline the attributes of the delayering process. These include the ability to find patterns unseen in traditional analysis methods, the ability to read neighbourhood boundaries from the street patterns, and heighten awareness of elements through a unique graphic presentation method. These attributes and claims of the delayering process made it intriguing as a potential tool for the planning profession. Urban physical planning is based on a rational-comprehensive methodology where analysis is used to inform scenario development and decision making. If delayering could add to the analysis phase of planning it could become a useful tool to the profession. To identify this an assessment of the process' strengths and weaknesses had to be made. To examine this question I reviewed contemporary literature regarding the urban environment, the importance of the street, perception of place, and presentation methods. This provided the background information that supported the importance of the attributes of the delayering process. To test the strengths and weaknesses of the process a case study use of it in the City of Vancouver was conducted. This tested the transferability of the process, its accuracy, and the ease of use. Combining this information with the information of the literature review an assessment of delayering was made. The overall findings were that the process lacks single strength that would make it a useful tool. All of its attributes were somewhat successful in their claims, however the combined process was not seen as superior to traditional methods of analysis of form The unique methodology of the process, a reverse of the overlay design process, and focus of the street were seen as the overall strengths. The recommendations for the use of delayering is that it adds to the theoretical discussion of the planning profession, it can be helpful in exploratory analysis exercises, and its methodology can be adapted to other types of urban form mapping exercises.