cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Harvesting correlations in Schwarzschild and collapsing shell spacetimes
Creators: name: Tjoa, Erickson
name: Mann, Robert B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the harvesting of correlations by two Unruh-DeWitt static detectors from the vacuum state of a massless scalar field in a background Vaidya spacetime consisting of a collapsing null shell that forms a Schwarzschild black hole (hereafter Vaidya spacetime for brevity), and we compare the results with those associated with the three preferred vacua (Boulware, Unruh, Hartle-Hawking-Israel vacua) of the eternal Schwarzschild black hole spacetime. To do this we make use of the explicit Wightman functions for a massless scalar field available in (1+1)-dimensional models of the collapsing spacetime and Schwarzschild spacetimes, and the detectors couple to the proper time derivative of the field. First we find that, with respect to the harvesting protocol, the Unruh vacuum agrees very well with the Vaidya vacuum near the horizon even for finite-time interactions. Second, all four vacua have different capacities for creating correlations between the detectors, with the Vaidya vacuum interpolating between the Unruh vacuum near the horizon and the Boulware vacuum far from the horizon. Third, we show that the black hole horizon inhibits \textit{any} correlations, not just entanglement. Finally, we show that the efficiency of the harvesting protocol depend strongly on the signalling ability of the detectors, which is highly non-trivial in presence of curvature. We provide an asymptotic analysis of the Vaidya vacuum to clarify the relationship between the Boulware/Unruh interpolation and the near/far from horizon and early/late-time limits. We demonstrate a straightforward implementation of numerical contour integration to perform all the calculations.
description: 39 pages, 12 figures, 1 Appendix. V3: fixed minor typos to match published version; V4: fixed minor typos, better notation for RHS of $\mathcal{L}_{ij}$ and added clarification in Section 4.1 and Section 5.5
Semiclassical Theory of Quantum Chaotic Transport: Phase-Space Splitting, Coherent Backscattering and Weak Localization
Creators: name: Jacquod, Ph.
name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate transport properties of quantized chaotic systems in the short wavelength limit. We focus on non-coherent quantities such as the Drude conductance, its sample-to-sample fluctuations, shot-noise and the transmission spectrum, as well as coherent effects such as weak localization. We show how these properties are influenced by the emergence of the Ehrenfest time scale $\tE$. Expressed in an optimal phase-space basis, the scattering matrix acquires a block-diagonal form as $\tE$ increases, reflecting the splitting of the system into two cavities in parallel, a classical deterministic cavity (with all transmission eigenvalues either 0 or 1) and a quantum mechanical stochastic cavity. This results in the suppression of the Fano factor for shot-noise and the deviation of sample-to-sample conductance fluctuations from their universal value. We further present a semiclassical theory for weak localization which captures non-ergodic phase-space structures and preserves the unitarity of the theory. Contrarily to our previous claim [Phys. Rev. Lett. 94, 116801 (2005)], we find that the leading off-diagonal contribution to the conductance leads to the exponential suppression of the coherent backscattering peak and of weak localization at finite $\tE$. This latter finding is substantiated by numerical magnetoconductance calculations.
description: Typos in central eqns corrected (this paper supersedes cond-mat/0509186) 20pages
Exploring The Spatial Reasoning Ability of Neural Models in Human IQ Tests
Creators: name: Kim, Hyunjae
name: Koh, Yookyung
name: Baek, Jinheon
name: Kang, Jaewoo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Although neural models have performed impressively well on various tasks such as image recognition and question answering, their reasoning ability has been measured in only few studies. In this work, we focus on spatial reasoning and explore the spatial understanding of neural models. First, we describe the following two spatial reasoning IQ tests: rotation and shape composition. Using well-defined rules, we constructed datasets that consist of various complexity levels. We designed a variety of experiments in terms of generalization, and evaluated six different baseline models on the newly generated datasets. We provide an analysis of the results and factors that affect the generalization abilities of models. Also, we analyze how neural models solve spatial reasoning tests with visual aids. Our findings would provide valuable insights into understanding a machine and the difference between a machine and human.
The 3-dimensional Einstein-Klein-Gordon system in characteristic numerical relativity
Creators: name: Barreto, W.
name: Da Silva, A.
name: Gomez, R.
name: Lehner, L.
name: Rosales, L.
name: Winicour, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We incorporate a massless scalar field into a 3-dimensional code for the characteristic evolution of the gravitational field. The extended 3-dimensional code for the Einstein--Klein--Gordon system is calibrated to be second order convergent. It provides an accurate calculation of the gravitational and scalar radiation at infinity. As an application, we simulate the fully nonlinear evolution of an asymmetric scalar pulse of ingoing radiation propagating toward an interior Schwarzschild black hole and compute the backscattered scalar and gravitational outgoing radiation patterns. The amplitudes of the scalar and gravitational outgoing radiation modes exhibit the predicted power law scaling with respect to the amplitude of the initial data. For the scattering of an axisymmetric scalar field, the final ring down matches the complex frequency calculated perturbatively for the $\ell=2$ quasinormal mode.
description: 26 pages, 14 figures
Proposta locacional para unidades de processamento de mamona pela agricultura familiar, no centro Norte do estado da Bahia
Creators: name: Sartori, Marco Antonio
name: Lima, Fatima Machado De Souza
name: Perez, Ronaldo
name: Rocha, Mauro Nacif
name: Martins, Danielle D. SantAnna
name: Sartori, Marco Antonio
name: Lima, Fatima Machado De Souza
name: Perez, Ronaldo
name: Rocha, Mauro Nacif
name: Martins, Danielle D. SantAnna
Publisher: name: Unknown
Year: 2009
Subjects: subject: Resource /Energy Economics and Policy
subject: Localization
subject: Castor oil
subject: Transportation cost

description: The objective of this work is to identify the best location to install oil mills to process vegetable oil, obtained from castor, in the North Central Region in the State of Bahia, Brazil. Fifty five cities in that region have been identified as producers of this vegetable as so as their respective productivity and distance between them and the cities for the installation of the oil mills. Besides, the city of Candeias was elected to receive the produced oil, since there is a factory (PETROBRAS) that biodiesel castor oil. Aiming to encourage local small scale farming and processing of castor, produced at that region, two models of screw presses have been chosen, with capacities of 7.5 and 22.5 tons of castor’s oil per day to extract the oil. A mathematical model has been developed and, using the software XPRESS MP Release 2007, satisfactory results have been reached, that indicated eight cities for the installation of the mills.
Feix-Kaledin metric on the total spaces of cotangent bundles to Kähler quotients
Creators: name: Abasheva, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C26, 14L24

description: In this paper we study the geometry of the total space $Y$ of a cotangent bundle to a Kähler manifold $N$ where $N$ is obtained as a Kähler reduction from $\mathbb C^n$. Using the hyperkähler reduction we construct a hyperkähler metric on $Y$ and prove that it coincides with the canonical Feix-Kaledin metric. This metric is in general non-complete. We show that the metric completion $\tilde Y$ of the space $Y$ is equipped with a structure of a stratified hyperkähler space. We give a necessary condition for the Feix-Kaledin metric to be complete using an observation of R.Bielawski. Pick a complex structure $J$ on $\tilde Y$ induced from quaternions. Suppose that $J\ne\pm I$ where $I$ is the complex structure whose restriction to $Y = T^*N$ is induced by the complex structure on $N$. We prove that the space $\tilde{Y}_J$ admits an algebraic structure and is an affine variety.
description: 34 pages; fixed two mistakes (see Prop. 2.16 and Subs. 3.1) insignificant to the proof of the main results, improved some statements, added examples
Additional file 3 of NeuroConstruct-based implementation of structured-light stimulated retinal circuitry
Creators: name: Elbaz, Miriam
name: Buterman, Rachel
name: Tsur, Elishai Ezra
Publisher: name: figshare
Year: 2020
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 3. Code example 2: Synapse creation and distribution.
Impactos macroeconomicos do desempenho agropecuário
Creators: name: Silva, Jose Maria Alves Da
name: Silva, Jose Maria Alves Da
Publisher: name: Unknown
Year: 2008
Subjects: subject: Political Economy
subject: Macroeconomics
subject: Agriculture
subject: Model of two-sectors
subject: Brazil

description: The current global economic crisis is helping to dispel misconceptions of neoliberalism. The moment is favorable to rescue other theoretical views. Among these are those that can be used to question the preaching in favor of exploiting the agricultural potential of Brazil as a strategy for integration into the global economy. This is the main objective of this article. In that sense, it was used a model of "two-sectors" for identification and analysis of the macroeconomic consequences of changes in parameters of the agricultural market. The results of the exercises performed served well to show objectively the misconceptions contained in some views of great presence in the Brazilian economic debate.
Monopoles over 4-manifolds containing long necks, II
Creators: name: Froyshov, Kim A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R58; 57R57

description: We establish a gluing theorem for monopoles over 4--manifolds containing long necks. The theorem is stated in terms of an ungluing map defined explicitly in terms of data that appear naturally in applications. Orientations of moduli spaces are handled using Benevieri--Furi's concept of orientations of Fredholm operators of index 0.
description: 71 pages. v2: Only minor changes. v3: New material on orientations. v4: One paragraph in the introduction was rewritten. v5: Abstract added
Functions and properties of RNase G and RNase E from Escherichia coli
Creators: name: Briant, Douglas James
Publisher: name: University of British Columbia
Year: 2009

description: Ribonucleic acid (RNA) is a vital molecule in the cell. Messenger RNA (mRNA) serves as the intermediate between DNA and protein while ribosomal RNA (rRNA) and transfer RNA (tRNA) catalyze translation. RNA is processed and ultimately degraded by ribonucleases. The majority of the endoribonucleolytic activity in Escherichia coli is derived from RNase E. This 1061 amino acid protein associates with at least three other proteins to form a complex called the RNA degradosome. This work established that the degradosome does not assemble de novo with successive rounds of degradation. It also determined that RNase E lacks 5'-phosphatase activity. Studies into the activity of RNase E are confounded by the fact that it associates into a complex with other RNA processing enzymes. We therefore utilized RNase G, which shares 35% amino acid sequence identity (50% similarity) to the catalytic domain of RNase E, as a model for RNase E. RNase G is the endonuclease responsible for forming the mature 5'-end of 16S rRNA. Non-denaturing purifications for RNase G were developed and the correct Nterminal sequence of the protein unambiguously identified. Through cross-linking studies, sucrose gradient centrifugation and gel filtration, it was determined that RNase G, and by inference, RNase E, exists primarily as a dimer. Site-directed mutagenesis was utilized to elucidate the role of six cysteine residues, including two highly conserved cysteines, of RNase G. None of the mutations resulted in a loss of activity, although subtle influences on structure and activity were observed with the RNase G variants. The S1 domain, which potentially binds RNA, was deleted without inactivating the enzyme. Further studies are required to determine if the S1 domain plays a role in substrate recognition. Finally, examinations using synthetic, chimeric RNA-DNA oligonucleotides revealed the chemical requirements for recognition and cleavage of a substrate by RNase E or RNase G. I concluded that a single 2'- OH group 5' to the site of cleavage was sufficient for endoribonucleic activity. This work established RNase G as a model for investigating the activity and structure of the catalytic domain of RNase E.
ФОРМИРОВАНИЕ ЯЗЫКОВОЙ КОМПЕТЕНЦИИ УЧАЩИХСЯ НА ОСНОВЕ ГЕНДЕРНОГО ПОДХОДА
Creators: name: Янгибаев, Лазизбек
Publisher: name: Zenodo
Year: 2024

description: В данной тезисе исследуется проблема совершенствования знаний и умений учащихся в работе с текстом на основе гендерного подхода, а также методы применения в процессе работы на уроках русского языка.
Shadows of Sgr A$^*$ Black Hole Surrounded by Superfluid Dark Matter Halo
Creators: name: Jusufi, Kimet
name: Jamil, Mubasher
name: Zhu, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we construct a black hole solution surrounded by superfluid dark matter (BH-SFDM) and baryonic matter, and study their effects on the shadow images of the Sgr A$^{*}$ black hole. To achieve this goal, we have considered two density profiles for the baryonic matter described by the spherical exponential profile and the power law profile including a special case describing a totally dominated dark matter galaxy (TDDMG). Using the present values for the parameters of the superfluid dark matter and baryonic density profiles for the Sgr A$^{*}$ black hole, we find that the effects of the superfluid dark matter and baryonic matter on the size of shadows are almost negligible compared to the Kerr vacuum black hole. In addition, we find that by increasing the baryonic mass the shadow size increases considerably. This result can be linked to the matter distribution in the galaxy, namely the baryonic matter is mostly located in the galactic center and therefore, by increasing the baryonic matter can affect the size of black hole shadow compared to the totally dominated dark matter galaxy where we observe an increase of the angular diameter of the Sgr A$^{*}$ black hole of the magnitude $10^{-5} μ$arcsec.
description: 13 pages, 7 captioned figures. arXiv admin note: text overlap with arXiv:1711.05748 by other authors
Additional file 2 of NeuroConstruct-based implementation of structured-light stimulated retinal circuitry
Creators: name: Elbaz, Miriam
name: Buterman, Rachel
name: Tsur, Elishai Ezra
Publisher: name: figshare
Year: 2020
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 2. Code example 1: Network creation.
A nova economia institucional e sua aplicação no estudo do agronegócio brasileiro
Creators: name: Mendes, Krisley
name: Figueiredo, Jeovan De Carvalho
name: Michels, Ido Luiz
name: Mendes, Krisley
name: Figueiredo, Jeovan De Carvalho
name: Michels, Ido Luiz
Publisher: name: Unknown
Year: 2008
Subjects: Research Methods/ Statistical Methods

description: This paper presents the theoretical roots from which emerges the New Institutional Economics (NIS). It shows that the NIS, in discussion with other branches institutionalists, reveals important theoretical limitations and contradictions. The lack of that rescue in studies on agribusiness prevents the observation of important issues of the Brazilian agribusiness, such as conflict, power and culture in the formation of structures of governance. The paper presents, first, the link between the understanding agribusiness in its systemic form and the institutionalist thought. Then, recovers the sources and branches of Institutional Economics, and shows that NIS is linked to the methodological individualism, which differs from the original institutionalism. It is concluded that the NIS is limited theoretical framework to understand the structures of governance observed in Brazil, mainly in the Brazilian agribusiness.
Identifying and Understanding Scientific Network Flows
Creators: name: Hoeft, Bruno
name: Attebury, Garhan
name: Babik, Marian
name: Carder, Dale
name: Chown, Tim
name: Hanushevky, Andrew
name: Lake, Andrew
name: Lambert, Michael
name: Letts, James
name: McKee, Shawn
name: Newell, Karl
name: Sullivan, Tristan
Publisher: name: EDP Sciences - Web of Conferences
Year: 2024
Subjects: firefly
flow labeling
elefant flow

description: The High-Energy Physics (HEP) and Worldwide LHC Computing Grid (WLCG) communities have faced significant challenges in understanding their global network flows across the world’s research and education (R&E) networks. This article describes the status of the work carried out to tackle this challenge by the Research Technical Networking Working Group (RNTWG) and the Scientific Network Tags (Scitags) initiative, including the evolving framework and tools, as well as our plans to improve network visibility before the next WLCG Network Data Challenge in early 2024. The Scitags initiative is a long-term effort to improve the visibility and management of network traffic for data-intensive sciences. The efforts of the RNTWG and Scitags initiatives have created a set of tools, standards, and proof-of-concept demonstrators that show the feasibility of identifying the owner (community) and purpose (activity) of network traffic anywhere in the network.
Toward a fundamental groupoid for the stable homotopy category
Creators: name: Morava, Jack
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G99, 19F99, 57R99, 81T99

description: This very speculative sketch suggests that a theory of fundamental groupoids for tensor triangulated categories could be used to describe the ring of integers as the singular fiber in a family of ring-spectra parametrized by a structure space for the stable homotopy category, and that Bousfield localization might be part of a theory of `nearby' cycles for stacks or orbifolds.
description: This is the version published by Geometry & Topology Monographs on 18 April 2007
Symmetry assisted preparation of entangled many-body states on a quantum computer
Creators: name: Lacroix, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Starting from the Quantum-Phase-Estimate (QPE) algorithm, a method is proposed to construct entangled states that describe correlated many-body systems on quantum computers. Using operators for which the discrete set of eigenvalues is known, the QPE approach is followed by measurements that serve as projectors on the entangled states. These states can then be used as inputs for further quantum or hybrid quantum-classical processing. When the operator is associated to a symmetry of the Hamiltonian, the approach can be seen as a quantum--computer formulation of symmetry breaking followed by symmetry restoration. The method proposed in this work, called Discrete Spectra Assisted (DSA), is applied to superfluid systems. By using the blocking technique adapted to qubits, the full spectra of a pairing Hamiltonian is obtained.
Additional file 3 of Discovery of CD80 and CD86 as recent activation markers on regulatory T cells by protein-RNA single-cell analysis
Creators: name: Trzupek, Dominik
name: Dunstan, Melanie
name: Cutler, Antony J.
name: Lee, Mercede
name: Godfrey, Leila
name: Jarvis, Lorna
name: Rainbow, Daniel B.
name: Aschenbrenner, Dominik
name: Jones, Joanne L.
name: Uhlig, Holm H.
name: Wicker, Linda S.
name: Todd, John A.
name: Ferreira, Ricardo C.
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 3: Figure S1. Protein expression displays much larger dynamic range of expression. Figure S2. Targeted scRNA-seq provides increased sensitivity to detect lowly expressed transcripts. Figure S3. Effects of different data normalisation methods on cell clustering. Figure S4. Differential expression in the identified resting and in vitro stimulated primary CD4+ T-cell subsets. Figure S5. In vitro stimulation reinforces the trajectories of CD4+ T cell differentiation. Figure S6. Interplay between the BACH2 and BLIMP-1 transcriptional programmes regulates CD4+ Treg differentiation in humans. Figure S7. Characterising the expression of the B7 molecules CD80 and CD86 on CD4+ T cells. Figure S8. Integration of data from resting and in vitro stimulated CD4+ T cells. Figure S9. Single-cell mRNA and protein quantification identifies distinct functional populations of human circulating CD3+ T cells. Figure S10. Targeted multi-omics approach reveals trajectories of B-cell differentiation and class switching in blood and tissue.
Hubble Advanced Camera for Surveys Observations of the z=6.42 Quasar SDSS 1148+5251: A Leak in the Gunn-Peterson Trough
Creators: name: White, Richard L.
name: Becker, Robert H.
name: Fan, Xiaohui
name: Strauss, Michael A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Hubble Advanced Camera for Surveys has been used to obtain a narrow-band image of the weak emission peak seen at lambda=7205 A in the Gunn-Peterson Ly beta absorption trough of the highest redshift quasar, SDSS J1148+5251. The emission looks perfectly point-like; there is no evidence for the intervening galaxy that we previously suggested might be contaminating the quasar spectrum. We derive a more accurate astrometric position for the quasar in the two filters and see no indication of gravitational lensing. We conclude that the light in the Ly beta trough is leaking through two unusually transparent, overlapping windows in the IGM absorption, one in the Ly beta forest at z ~ 6 and one in the Ly alpha forest at z ~ 5. If there are significant optical depth variations on velocity scales small compared with our spectral resolution (~150 km/s), the Ly alpha trough becomes more transparent for a given Ly beta optical depth. Such variations can only strengthen our conclusion that the fraction of neutral hydrogen in the IGM increases dramatically at z>6. We argue that the transmission in the Ly beta trough is not only a more sensitive measure of the neutral fraction than is Ly alpha, it also provides a less biased estimator of the neutral hydrogen fraction than does the Ly alpha transmission.
description: Submitted to the Astronomical Journal
Evolução da produção de carne suína no Brasil: uma análise estrutural-diferencial
Creators: name: Rodrigues, Gislene Zinato
name: Gomes, Marilia Fernandes Maciel
name: Cunha, Denis Antonio Da
name: Santos, Vladimir Faria Dos
name: Rodrigues, Gislene Zinato
name: Gomes, Marilia Fernandes Maciel
name: Cunha, Denis Antonio Da
name: Santos, Vladimir Faria Dos
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Local factor
subject: Technological factor
subject: Shift-Share model
subject: Pork meat

description: The objective of this paper is to analyze the production shares of the main Brazilian states (Minas Gerais, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul, Mato Grosso do Sul, Mato Grosso and Goiás) in the national production of inspected and total pork meat in the period from 2000 to 2006. The analysis considered the evolution of the production in terms of the regional effects, and indicators of the technical evolution of the production. The theoretical model used is the induced innovation model, based on agricultural modernization theory. The analysis method was the shift-share model. The results showed that the pork Brazilian production presented important transformations. Although the total production of pork meat has presented significant growth, the inspected production showed superior dynamism. The production is moving to regions closed to raw material supplying areas. The result is a production modernization dynamics in the areas of agricultural border, trend that had already been verified in the bovine livestock.
Parity violation in proton-deuteron scattering
Creators: name: Milstein, A. I.
name: Nikolaev, N. N.
name: Salnikov, S. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The effects of parity violation in the interaction of relativistic polarized protons and deuterons are discussed. Within Glauber's approach, estimates are obtained for P-odd asymmetries in the total and elastic scattering cross sections, in the deuteron dissociation cross section, and in the inelastic cross section with meson production in a final state. It is shown that, from the point of view of the magnitude of the P-odd effects, the interaction of polarized deuterons with unpolarized protons has an advantage over the interaction of polarized protons with unpolarized deuterons. A significant P-odd asymmetry was found in the dissociation channel of the polarized deuteron.
description: 9 pages, 1 figure
Stability of Inhomogeneous Superstructures from Renormalized Mean-field Theory of the t--J Model
Creators: name: Poilblanc, Didier
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using the t--J model (which can also include Coulomb repulsion) and the ``plain vanilla'' renormalized mean-field theory of Zhang et al. (1988), stability of inhomogeneous 4a x 4a superstructures as those observed in cuprates superconductors around hole doping 1/8 is investigated. We find a non-uniform 4a x 4a bond order wave involving simultaneously small (~ 10^-2 t) inhomogeneous staggered plaquette currents as well as a small charge density modulation similar to pair density wave order. On the other hand, no supersolid phase involving a decoupling in the superconducting particle-particle channel is found.
description: 4 pages
Modelando a sazonalidade e o processo gerador da série de tempo do emprego rural no estado de São Paulo
Creators: name: Fredo, Carlos Eduardo
name: Margarido, Mario Antonio
name: Fredo, Carlos Eduardo
name: Margarido, Mario Antonio
Publisher: name: Unknown
Year: 2008
Subjects: subject: Labor and Human Capital
subject: Rural employment
subject: Seasonality
subject: ARIMA model
subject: X-12 method

description: This paper used the X-12 method, seasonal unit root and Autoregressive Integrated Moving Average Model to identify and to model the generator process of rural employment in the state of São Paulo in the period from January 1996 to December 2006. The results show that there is strong seasonal demand for occasional rural employment from April to August for several main harvests. The seasonal unit root test detected the presence of seasonal unit root. This result confirms the presence of a seasonal pattern in the rural employment time series. The ARIMA model caught the rural employment dynamism for occasional workers. It was necessary to add three moving average parameters of small orders, beyond a seasonal moving average parameter, and an autoregressive parameter which represents the hiring of permanent workers.
The No-Higgs Signal: Strong WW Scattering at the LHC
Creators: name: Chanowitz, Michael S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Strong WW scattering at the LHC is discussed as a manifestation of electroweak symmetry breaking in the absence of a light Higgs boson. The general framework of the Higgs mechanism -- with or without a Higgs boson -- is reviewed, and unitarity is shown to fix the scale of strong WW scattering. Strong WW scattering is also shown to be a possible outcome of five-dimensional models, which do not employ the usual Higgs mechanism at the TeV scale. Precision electroweak constraints are briefly discussed. Illustrative LHC signals are reviewed for models with QCD-like dynamics, stressing the complementarity of the W^{\pm}Z and like-charge W^+W^+ + W^-W^- channels.
description: 16 pages, talk presented at Physics at LHC, July 13 - 17, 2004, Vienna, Austria, to be published in the proceedings
Additional file 1 of NeuroConstruct-based implementation of structured-light stimulated retinal circuitry
Creators: name: Elbaz, Miriam
name: Buterman, Rachel
name: Tsur, Elishai Ezra
Publisher: name: figshare
Year: 2020
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 1. Installation and manual.
Nuclear Spirals as Signatures of Supermassive Black Holes
Creators: name: Ann, Hong Bae
name: Lee, Hyung Mok
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent high resolution images of spiral galaxies show wide varieties of features including nuclear spirals in the central parts. Some of the galaxies show grand-design nuclear spirals. The morphology of grand-design spirals can be further divided by the openness of the arms: tightly wound ones with winding angle of around 3$π$ radian and open spirals with winding angle of around $π$ radian. Based on hydrodynamical simulations, we have investigated the mechanism responsible for the openness of nuclear spirals. Since the gas flow in the nuclear region is mainly governed by the central mass concentration near the nuclei and the sound speed of the gas, we have examined various models with different mass concentration represented by the mass of the central black hole and different sound speeds. We found that the tightly wound spirals can be formed when the mass of the black hole is large enough to remove the inner-inner Lindblad resonances and sound speeds lie between 15 - 20 km/sec. Thus, the presence of the tightly wound nuclear spiral could imply the presence of relatively massive black hole in the center.
description: 6 pages, 4 figures
Westerbork HI observations of high-velocity clouds near M31 and M33
Creators: name: Westmeier, T.
name: Braun, R.
name: Thilker, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have undertaken high-resolution follow-up of a sample of high velocity HI clouds apparently associated with M31. Our sample was chosen from the population of high-velocity clouds (HVCs) detected out to 50 kpc projected radius of the Andromeda Galaxy by Thilker et al. (2004) with the Green Bank Telescope. Nine pointings were observed with the Westerbork Synthesis Radio Telescope to determine the physical parameters of these objects and to find clues to their origin. One additional pointing was directed at a similar object near M33. At 2' resolution we detect 16 individual HVCs around M31 and 1 HVC near M33 with typical HI masses of a few times 10^5 solar masses and sizes of the order of 1 kpc. Estimates of the dynamical and virial masses of some of the HVCs indicate that they are likely gravitationally dominated by additional mass components such as dark matter or ionised gas. Twelve of the clouds are concentrated in an area of only 1 by 1 degree at a projected separation of less than 15 kpc from the disk of M31. This HVC complex has a rather complicated morphological and kinematical structure and partly overlaps with the giant stellar stream of M31, suggesting a tidal origin. Another detected feature is in close proximity, in both position and velocity, with NGC 205, perhaps also indicative of tidal processes. Other HVCs in our survey are isolated and might represent primordial, dark-matter dominated clouds.
description: 18 pages, 16 figures, accepted for publication in Astronomy & Astrophysics
D2.3.15 Update website with new information on ethnic foods targeted at both consumers and industry especially SMEs and submit various articles and papers on Ethnic Foods for publication
Creators: name: University of Leeds
Publisher: name: Zenodo
Year: 2005
Subjects: NoE and NEXUS Projects
The EuroFIR Food Platform
EuroFIR

description: D2.3.15 Update website with new information on ethnic foods targeted at both consumers and industry especially SMEs and submit various articles and papers on Ethnic Foods for publication
Eficiência técnica dos produtores de leite em assentados rurais da reforma agrária
Creators: name: Campos, Samuel Alex Coelho
name: Ferreira Neto, Jose Ambrosio
name: Campos, Samuel Alex Coelho
name: Ferreira Neto, Jose Ambrosio
Publisher: name: Unknown
Year: 2008
Subjects: subject: Farm Management
subject: Rural settlement
subject: DEA
subject: Milk
subject: Minas Gerais

description: This paper aimed to evaluate the technical efficiency of milk producers in the Projeto de Assentamento (PA) Feliz União, municipality of Lagoa Grande, MG. To this collected data to some of the milk production of 23 settlers in 2007 and later was used as analytical tools used Data Envelopment Analysis (DEA) to assess the technical efficiency of producers. The results show that the majority of producers (84%) are technically inefficient. Of inefficient farmers, 87% are operating under increasing returns to scale and 13% operating under diminishing returns to scale. Analyzing it is efficient and inefficient producers are mainly realizes that efficient producers are more intensive factor in the labor force and have herd dairy specialist for the activity. Technical assistance was not an important factor that explains the efficiency and inefficiency of producers.
Ultrafast Deflection of Spatial Solitons in AlGaAs Slab Waveguides
Creators: name: Hübner, J.
name: Aitchison, J. S.
name: van Driel, H. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate ultrafast all-optical deflection of spatial solitons in an AlGaAs slab waveguide using 190 fs, 1550 nm pulses which are used to generate and deflect the spatial soliton. The steering beam is focused onto the top of the waveguide near the soliton pathway and the soliton is steered due to refractive index changes induced by optical Kerr, or free carrier (Drude) effects. Angular deflections up to 8 mR are observed.
description: accept. for publ. in Optics Letters
Additional file 3 of Feasibility and acceptability of using medical and nursing students to provide Implanon NXT at the community level in Kinshasa, Democratic Republic of Congo
Creators: name: Hernandez, Julie H.
name: Akilimali, Pierre
name: Glover, Annie
name: Bertrand, Jane T.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 3.
Potential Consequences of Intra-Regional Trade in Short-Term Food Security Crises in Southeastern Africa
Creators: name: Haggblade, Steven
name: Nielson, Hunter
name: Govereh, Jones
name: Dorosh, Paul A.
name: Haggblade, Steven
name: Nielson, Hunter
name: Govereh, Jones
name: Dorosh, Paul A.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Food Security and Poverty
subject: International Relations/Trade
subject: Africa
subject: trade
subject: emergency

description: This paper aims to evaluate the potential impact of intra-regional trade in moderating food price shocks in south eastern Africa, in the market shed centered in Northern Mozambique, Malawi and Southeastern Zambia. To do so, the following analysis develops a spatially disaggregated model of maize and cassava markets in the region in order to evaluate the impact of supply shocks confronting the region, with and without cross-border trade.
description: A report prepared by Michigan State University for the World Bank under contract No. 7144132, Strengthening Food Security in Sub-Saharan Africa through Trade Liberalization and Regional Integration
Additional file 2 of Feasibility and acceptability of using medical and nursing students to provide Implanon NXT at the community level in Kinshasa, Democratic Republic of Congo
Creators: name: Hernandez, Julie H.
name: Akilimali, Pierre
name: Glover, Annie
name: Bertrand, Jane T.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2.
Nutritional Situation of Young Children in Rwanda: An Analysis of Anthropometric Data Collected by the Household Living Conditions Survey, 1999-2001
Creators: name: Wise, Victoria
name: Wise, Victoria
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: food security
subject: food policy
subject: Rwanda
subject: nutrition

description: This paper presents the results of descriptive analysis of the nutritional data collected in the EICV survey. As part of a larger analytical effort aimed at better understanding the factors that affect human livelihoods in Rwanda, this paper represents an initial attempt to use the anthropometric data on children’s weight, height and age to determine the prevalence of stunting, wasting and underweight among Rwandan children 3 to 59 months by age groups, sex, rural/urban areas and by province. It also examines the seasonal prevalence of malnutrition and looks at the differences in nutritional outcomes in various agriculture production zones. Finally, the data are compared to malnutrition rates in other countries in the region, and to previous nutritional surveys undertaken in Rwanda over the past 10 years.
description: Food Security Research Project (FSRP)1 and Division of Agricultural Statistics (DSA) Ministry of Agriculture, Livestock, and Forestry MINAGRI
Black Holes, Moduli, and Long-Range Forces
Creators: name: Heidenreich, Ben
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is well known that an identical pair of extremal Reissner-Nordstrom black holes placed a large distance apart will exert no force on each other. In this paper, I establish that the same result holds in a very large class of two-derivative effective theories containing an arbitrary number of gauge fields and moduli, where the appropriate analog of an extremal Reissner-Nordstrom black hole is a charged, spherically symmetric black hole with vanishing surface gravity or vanishing horizon area. Analogous results hold for black branes.
description: 57 pages, 4 figures. v2: matches published version
Situation Nutritionnelles des jeunes enfants au Rwanda: Une analyse de données anthropométriques collectées par l'Enquête sur les Conditions de Vie des Ménages 1999-2001
Creators: name: Wise, Victoria
name: Wise, Victoria
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: food security
subject: food policy
subject: Rwanda
subject: nutrition

description: This paper presents the results of descriptive analysis of the nutritional data collected in the EICV survey. As part of a larger analytical effort aimed at better understanding the factors that affect human livelihoods in Rwanda, this paper represents an initial attempt to use the anthropometric data on children’s weight, height and age to determine the prevalence of stunting, wasting and underweight among Rwandan children 3 to 59 months by age groups, sex, rural/urban areas and by province. It also examines the seasonal prevalence of malnutrition and looks at the differences in nutritional outcomes in various agriculture production zones. Finally, the data are compared to malnutrition rates in other countries in the region, and to previous nutritional surveys undertaken in Rwanda over the past 10 years.
description: Food Security Research Project (FSRP)1 et Division des Statistiques Agricoles (DSA) Ministère d'Agriculture, de l'Elevage et des Forêts MINAGRI
freese-math/riemann-spectral-proof: Beta Scale Construction from Zeta Zeros and Prime Logarithms
Creators: name: Tim Freese
Publisher: name: Zenodo
Year: 2025

description: This release introduces a novel construction of the Beta scale, derived from the spectral data of a quantum-like operator involving zeta zeros and logarithmic primes. It constitutes a new analytical framework relevant to the Riemann Hypothesis and number theory.

Abstract:

We introduce a spectrally constructed Beta scale intimately tied to the nontrivial zeros of the Riemann zeta function. Based on a self-adjoint operator H \cdot e^{i\pi\beta}, whose spectrum captures both zeta zeros and prime logarithmic structure, we generate a novel sequence — the Beta scale — by solving an inverse spectral problem. The resulting values exhibit quasiperiodic structure and encode deep arithmetic information. This construction opens a new analytical pathway toward a spectral proof of the Riemann Hypothesis, providing a bridge between functional analysis, operator theory, and analytic number theory. The release contains core data, transformation tools, and high-resolution eigenvalue sequences supporting reproducibility and further mathematical exploration.

Spectral Derivation of the Beta-Scale from the Riemann Zeta Function

This release introduces the Beta-Scale — a novel, spectrally defined function β(n) — derived from the analytic and structural properties of the Riemann zeta function ζ(s). The central idea is to encode information about the zeta spectrum directly into the exponent of a modified Dirichlet series:

\zeta_\beta(s) := \sum_{n=2}^\infty \frac{1}{n^{\beta(n) + is}}

\beta(n) = B + C \cdot \frac{\log n}{\log \log n} + D \cdot \cos\left(2\pi f \cdot \log n + \varphi\right)

This structure combines global scaling and fine spectral modulations. Key results:
	•	Absolute convergence of the Zeta-Beta function for all ( s \in \mathbb{C} )
	•	Conjugate symmetry: ( \zeta_\beta(s) = \zeta_\beta(1 - s) )
	•	Different zeros from ζ(s), but robust oscillatory behavior
	•	Fourier analysis reveals discrete structure in β(log n)
	•	Relaxation interpretation via a modulated time scale

This repository focuses on the derivation and numerical evaluation of β(n), the construction of the Zeta-Beta function, and its comparison with classical zeta structures.

#BetaScale #RiemannZeros #SpectralProof
#HOperator #NonHermitian #ComplexSpectrum
#RiemannHypothesis
![IMG_4711](https://github.com/user-attachments/assets/cac973aa-540f-4030-ae16-87f4405859c3)
![3ac99458-8ec1-4c1e-8894-594c9b6b0ae7](https://github.com/user-attachments/assets/04ac2114-06c9-49eb-88b5-4151a13b92a0)
#ZetaSpectra
Forces Driving Change in Rwandan Smallholder Agriculture 1990-2001
Creators: name: Donovan, Cynthia
name: Mpyisi, Edson
name: Loveridge, Scott
name: Donovan, Cynthia
name: Mpyisi, Edson
name: Loveridge, Scott
Publisher: name: Unknown
Year: 2002
Subjects: subject: Crop Production/Industries
subject: food security
subject: food policy
subject: Rwanda
subject: smallholder agriculture

description: The purpose of this discussion paper is to first document and highlight some of the major shifts in output over the past ten years, and then provide some working hypotheses about the reasons behind the changes. The paper also documents troubling trends in overall productivity in the traditional agriculture sector, underscoring the need for more off-farm employment and for improved agricultural input and output systems.
description: Food Security Research Project (FSRP) and Division of Agricultural Statistics (DSA) Ministry of Agriculture, Livestock and Forestry MINAGRI
Locally Localized Gravity and Geometric Transitions
Creators: name: Bazeia, D.
name: Brito, F. A.
name: Gomes, A. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we analyze the local localization of gravity in $AdS_4$ thick brane embedded in $AdS_5$ space. The 3-brane is modelled by domain wall solution of a theory with a bulk scalar field coupled to five-dimensional gravity. In addition to small four-dimensional cosmological constant, the vacuum expectation value (vev) of the scalar field controls the emergence of a localized four-dimensional quasi-zero mode. We introduce high temperature effects, and we show that gravity localization on a thick 3-brane is favored below a critical temperature $T_c$. These investigations suggest the appearance of another critical temperature $T_*,$ where the thick 3-brane engenders the geometric $AdS/M/dS$ transitions.
description: Latex, 16 pages, 8 eps figures, 1 table