cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Resolution of the small scale structure issues with dissipative dark matter from multiple Standard Model sectors
Creators: name: Foot, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dissipative dark matter arising from a hidden sector consisting of $N_{\rm sec}$ exact copies of the Standard Model is discussed. The particles from each sector interact with those from the other sectors by gravity and via the kinetic mixing interaction, described by the dimensionless parameter, $ε$. It has been known for some time that models of this kind are consistent with large scale structure and the cosmic microwave background measurements. Here, we argue that such models can potentially explain various observations on small scales, including the observed paucity and planar distribution of satellite galaxies, the flat velocity function of field galaxies, and the structure of galaxy halos. The value of the kinetic mixing parameter is estimated to be $ε\approx 1.2 \times 10^{-10}$ for $N_{\rm sec} = 5$, the example studied in most detail here. We also comment on cluster constraints such as those which arise from the Bullet cluster.
description: 51 pages
RXTE confirmation of the Intermediate Polar status of Swift J0732.5-1331
Creators: name: Butters, O. W.
name: Barlow, E. J.
name: Norton, A. J.
name: Mukai, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. We intend to establish the X-ray properties of Swift J0732.5-1331 and therefore confirm its status as an intermediate polar. Method. We analysed 36,240 s of X-ray data from RXTE. Frequency analysis was used to constrain temporal variations and spectral analysis used to characterise the emission and absorption properties. Results. The X-ray spin period is confirmed to be 512.4(3) s with a strong first harmonic. No modulation is detected at the candidate orbital period of 5.6 h, but a coherent modulation is present at the candidate 11.3 h period. The spectrum is consistent with a 37 keV bremsstrahlung continuum with an iron line at 6.4 keV absorbed by an equivalent hydrogen column density of around 10^22 atoms cm^-2. Conclusions. Swift J0732-1331 is confirmed to be an intermediate polar.
description: 4 pages, 5 figures, accepted for publication in A&A
IAM_COMPACT_D3.7_Open_Science_Protocols_update
Creators: name: Rodés-Bachs, Clàudia
name: Horowitz, Russell
name: Van de Ven, Dirk-Jan
Publisher: name: Zenodo
Year: 2024

description: This deliverable contains updates to and expansion of deliverable D3.6 – Open Science Protocols (DOI 10.5281/zenodo.10464844). It includes:

(a) a brief summary of the state-of-art of open science practices;

(b) a discussion of the results of a qualitative and quantitative survey that was conducted with all modelling teams from the 1st modelling cycle, and which gathers insights, feedback, and suggestions for the operationalisation of open science principles in the project;

(c) the updated Open Science Protocol for IAM COMPACT, which aims to be used in the 2nd Policy Response Mechanism cycle; and

(d) suggestions to boost the dissemination and comprehension of the protocol.

The updated protocol aims at the integration of the FAIR and TRUST principles in all project activities and by all consortium partners to promote the smooth interconnection of the models and multi-model exercises, and transparently manage the produced outcomes. To that aim, it details clear steps and suggests useful open-source platforms and tools for the different tasks.
Vector and Scalar Meson Resonances in $K\rightarrowπππ$ Decays
Creators: name: Fajfer, S.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Corrections to $K\rightarrowπππ$ induced by vector and scalar meson exchange are investigated within chiral perturbation theory.
description: 15pages, Latex-file, TUM-T31-41/93
Coordinate transformation makes perfect invisibility cloak with arbitrary shape
Creators: name: Yan, Wei
name: Yan, Min
name: Ruan, Zhichao
name: Qiu, Min
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: By investigating wave properties at cloak boundaries, invisibility cloaks with arbitrary shape constructed by general coordinate transformations are confirmed to be perfectly invisible to the external incident wave. The differences between line transformed cloaks and point transformed cloaks are discussed. The fields in the cloak medium are found analytically to be related to the fields in the original space via coordinate transformation functions. At the exterior boundary of the cloak, it is shown that no reflection is excited even though the permittivity and permeability do not always have a perfect matched layer form. While at the inner boundary, no reflection is excited either, and in particular no field can penetrate into the cloaked region. However, for the inner boundary of any line transformed cloak, the permittivity and permeability in a specific tangential direction are always required to be infinitely large. Furthermore, the field discontinuity at the inner boundary always exists; the surface current is induced to make this discontinuity self-consistent. For a point transformed cloak, it does not experience such problems. The tangential fields at the inner boundary are all zero, implying no field discontinuity exists
description: 12 pages, 3 figures
How to make unforgeable money in generalised probabilistic theories
Creators: name: Selby, John H.
name: Sikora, Jamie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the possibility of creating money that is physically impossible to counterfeit. Of course, "physically impossible" is dependent on the theory that is a faithful description of nature. Currently there are several proposals for quantum money which have their security based on the validity of quantum mechanics. In this work, we examine Wiesner's money scheme in the framework of generalised probabilistic theories. This framework is broad enough to allow for essentially any potential theory of nature, provided that it admits an operational description. We prove that under a quantifiable version of the no-cloning theorem, one can create physical money which has an exponentially small chance of being counterfeited. Our proof relies on cone programming, a natural generalisation of semidefinite programming. Moreover, we discuss some of the difficulties that arise when considering non-quantum theories.
description: 27 pages, many diagrams. Comments welcome
Duality in Optimization and Constraint Satisfaction
Creators: name: Hooker, John N.
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We show that various duals that occur in optimization and constraint satisfaction can be classified as inference duals, relaxation duals, or both. We discuss linear programming, surrogate, Lagrangean, superadditive, and constraint duals, as well as duals defined by resolution and filtering algorithms. Inference duals give rise to nogood-based search methods and sensitivity analysis, while relaxation duals provide bounds. This analysis shows that duals may be more closely related than they appear, as are surrogate and Lagrangean duals. It also reveals common structure between solution methods, such as Benders decomposition and Davis-Putnam-Loveland methods with clause learning. It provides a framework for devising new duals and solution methods, such as generalizations of mini-bucket elimination.
Neutral atom wavelength compatible 780 nm single photons from a trapped ion via quantum frequency conversion
Creators: name: Siverns, James D.
name: Hannegan, John
name: Quraishi, Qudsia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum networks consisting of quantum memories and photonic interconnects can be used for entanglement distribution (L.-M.Duan and H. J. Kimble, PRL 90, 253601 (2003), H. J. Kimble, Nat. 453, 1023 EP (2008)), quantum teleportation (S.Pirandola et.al, Nat. Photon. 9, 641 (2015)), and distributed quantum computing (T.Spiller, et.al., New J. Phys. 8, 30 (2006). Remotely connected two-node networks have been demonstrated using memories of the same type: trapped ion systems (D.Hucul, et.al, Nat. Phys. 11, 37 (2014)), quantum dots (W. B. Gao et. al, Nat. Photon. 9, 363 (2015)), and nitrogen vacancy centers (W. B. Gao et. al, Nat. Photon. 9, 363 (2015), B. Hensen, et. al., Nat. 526, 682 (2015)). Hybrid systems constrained by the need to use photons with the native emission wavelength of the memory, have been demonstrated between a trapped ion and quantum dot (H.Meyer et.al PRL 114, 123001 (2015)) and between a single neutral atom and a Bose-Einstein Condensate (M.Lettner et. al, PRL 106, 210503 (2011)). Most quantum systems operate at disparate and incompatible wavelengths to each other so such two-node systems have never been demonstrated. Here, we use a trapped 138Ba$^{+}$ ion and a periodically poled lithium niobate (PPLN) waveguide, with a fiber coupled output, to demonstrate 19% end-to-end efficient quantum frequency conversion (QFC) of single photons from 493 nm to 780 nm. At the optimal signal-to-noise operational parameter, we use fluorescence of the ion to produce light resonant with the $^{87}$Rb $D_2$ transition. To demonstrate the quantum nature of both the unconverted 493 nm photons and the converted photons near 780 nm, we observe strong quantum statics in their respective second order intensity correlations. This work extends the range of intra-lab networking between ions and networking and communication between disparate quantum memories. A
description: 5 page and 4 figures
title: 03_0279
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Some consequences of the effective low-energy lagrangian for gravity
Creators: name: Dobado, A.
name: Lopez, A.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the minimal low-energy action for gravity up to six derivatives which is renormalizable at the two-loop level modulo higher derivative corrections. Then we study the classical solutions corresponding to the Schwarzschild and the Robertson-Walker metrics. In the first case we find a singularity close to the gravitational radius and in the second case we find inflationary de Sitter solutions in absence of any matter or cosmological constant.
description: 13 pages
Don’t talk about it: Active avoidance in organizations
Creators: name: Bear, Julia B.
name: Woolley, Anita
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We introduce a new construct—active avoidance—that can be beneficial for organizations. Active avoidance is motivated by situational incongruence and takes two qualitatively different forms— pretending and bypassing, depending on the salience of outcome versus process expectations in an aversive situation. Active avoidance can lead to positive consequences by facilitating process inventions that involve increased efficiency and helpful accommodations. We discuss the conditions under which organizations can harness the positive results of active avoidance
Efficient Simulations of Interstellar Gas-Grain Chemistry Using Moment Equations
Creators: name: Barzel, B.
name: Biham, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Networks of reactions on dust grain surfaces play a crucial role in the chemistry of interstellar clouds, leading to the formation of molecular hydrogen in diffuse clouds as well as various organic molecules in dense molecular clouds. Due to the sub-micron size of the grains and the low flux, the population of reactive species per grain may be very small and strongly fluctuating. Under these conditions rate equations fail and the simulation of surface-reaction networks requires stochastic methods such as the master equation. However, the master equation becomes infeasible for complex networks because the number of equations proliferates exponentially. Here we introduce a method based on moment equations for the simulation of reaction networks on small grains. The number of equations is reduced to just one equation per reactive specie and one equation per reaction. Nevertheless, the method provides accurate results, which are in excellent agreement with the master equation. The method is demonstrated for the methanol network which has been recently shown to be of crucial importance.
The downwind hemisphere of the heliosphere: Eight years of IBEX-Lo observations
Creators: name: Galli, A.
name: Wurz, P.
name: Schwadron, N. A.
name: Kucharek, H.
name: Möbius, E.
name: Bzowski, M.
name: M., J.
name: Sokół
name: Kubiak, M. A.
name: Fuselier, S. A.
name: Funsten, H. O.
name: McComas, D. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present a comprehensive study of energetic neutral atoms (ENAs) of 10 eV to 2.5 keV from the downwind hemisphere of the heliosphere. These ENAs are believed to originate mostly from pickup protons and solar wind protons in the inner heliosheath. This study includes all low-energy observations made with the Interstellar Boundary Explorer over the first 8 years. Since the protons around 0.1 keV dominate the plasma pressure in the inner heliosheath in downwind direction, these ENA observations offer the unique opportunity to constrain the plasma properties and dimensions of the heliosheath where no in-situ observations are available. We first derive energy spectra of ENA intensities averaged over time for 49 macropixels covering the entire downwind hemisphere. The results confirm previous studies regarding integral intensities and the roll-over around 0.1 keV energy. With the expanded dataset we now find that ENA intensities at 0.2 and 0.1 keV seem to anti-correlate with solar activity. We then derive the product of total plasma pressure and emission thickness of protons in the heliosheath to estimate lower limits on the thickness of the inner heliosheath. The temporally averaged ENA intensities support a rather spherical shape of the termination shock and a heliosheath thickness between 150 and 210 au for most regions of the downwind hemisphere. Around the nominal downwind direction of 76° ecliptic longitude, the heliosheath is at least 280 au thick. There, the neutral hydrogen density seems to be depleted compared to upwind directions by roughly a factor of 2.
description: Preprint of article in The Astrophysical Journal
Tunable Electronic Structure and Surface States in Rare Earth Mono-Bismuthides with Partially Filled f Shell
Creators: name: Li, Peng
name: Wu, Zhongzheng
name: Wu, Fan
name: Cao, Chao
name: Guo, Chunyu
name: Wu, Yi
name: Liu, Yi
name: Sun, Zhe
name: Cheng, Cheng-Maw
name: Lin, Deng-Sung
name: Steglich, Frank
name: Yuan, Huiqiu
name: Chiang, Tai-Chang
name: Liu, Yang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Here we report the evolution of bulk band structure and surface states in rare earth mono-bismuthides with partially filled f shell. Utilizing synchrotron-based photoemission spectroscopy, we determined the three-dimensional bulk band structure and identified the bulk band inversions near the X points, which, according to the topological theory, could give rise to nontrivial band topology with odd number of gapless topological surface states. Near the surface Gamma bar point, no clear evidence for predicted gapless topological surface state is observed due to its strong hybridization with the bulk bands. Near the M bar point, the two surface states, due to projections from two inequivalent bulk band inversions, interact and give rise to two peculiar sets of gapped surface states. The bulk band inversions and corresponding surface states can be tuned substantially by varying rare earth elements, in good agreement with density-functional theory calculations assuming local f electrons. Our study therefore establishes rare earth mono-bismuthides as an interesting class of materials possessing tunable electronic properties and magnetism, providing a promising platform to search for novel properties in potentially correlated topological materials.
description: 7 figures
Phenomenological applications of non-perturbative heavy quark effective theory
Creators: name: Papinutto, Mauro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We briefly review the strategy to perform non-perturbative heavy quark effective theory computations and we specialize to the case of the b quark mass which has recently been computed including the 1/m term.
description: Presented at the 2007 Europhysics Conference on High Energy Physics, Manchester (UK) 19-25 July 2007
Jacquard: A Large Scale Dataset for Robotic Grasp Detection
Creators: name: Depierre, Amaury
name: Dellandréa, Emmanuel
name: Chen, Liming
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Grasping skill is a major ability that a wide number of real-life applications require for robotisation. State-of-the-art robotic grasping methods perform prediction of object grasp locations based on deep neural networks. However, such networks require huge amount of labeled data for training making this approach often impracticable in robotics. In this paper, we propose a method to generate a large scale synthetic dataset with ground truth, which we refer to as the Jacquard grasping dataset. Jacquard is built on a subset of ShapeNet, a large CAD models dataset, and contains both RGB-D images and annotations of successful grasping positions based on grasp attempts performed in a simulated environment. We carried out experiments using an off-the-shelf CNN, with three different evaluation metrics, including real grasping robot trials. The results show that Jacquard enables much better generalization skills than a human labeled dataset thanks to its diversity of objects and grasping positions. For the purpose of reproducible research in robotics, we are releasing along with the Jacquard dataset a web interface for researchers to evaluate the successfulness of their grasping position detections using our dataset.
Does the US Government Hedge against Fiscal Risk?
Creators: name: Berndt, Antje
name: Lustig, Hanno
name: Sevin Yeltekin Sleet
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We develop a method for measuring the amount of insurance the portfolio of government liabilities provides against fiscal shocks, and apply it to postwar US data. We define fiscal shocks as surprises in defense spending. Our results indicate that the US federal government is partially hedged against wars and other surprise increases in defense expenditures. Seven percent of the total cost of defense spending shocks in the postwar era was absorbed by lower real returns on the federal government's outstanding liabilities. More than half of this is due to reductions in expected future, rather than contemporaneous, holding returns on government debt. This implies that changes in US government's fiscal position help predict future bond returns. Our results also have implications for active management of government debt.
Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body Interactions
Creators: name: Chen, Bo-Lun
name: Huang, Xiao-Bin
name: Kou, Su-Peng
name: Zhang, Yunbo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, the quantum phase transition between superfluid state and Mott-insulator state is studied based on an extended Bose-Hubbard model with two- and three-body on-site interactions. By employing the mean-field approximation we find the extension of the insulating 'lobes' and the existence of a fixed point in three dimensional phase space. We investigate the link between experimental parameters and theoretical variables. The possibility to obverse our results through some experimental effects in optically trapped Bose-Einstein Condensates(BEC) is also discussed.
description: 7 pages, 4 figures; to be appear in Phys. Rev. A
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00521
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00521, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00521, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
The Cosmic-Ray Spectra: News on their Knees
Creators: name: De Rújula, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In a comprehensive model of Cosmic Rays (CRs) proposed a decade ago, the energies of the spectral "knees" of the various CR species were predicted to be proportional to mass, rather than charge. The model also predicts the knees to occur at an energy of two to four million times the particle's rest mass. Recent data allow one to verify this prediction, particularly for Fe and lighter-nuclei CRs. But the most stringent test involves the putative knee in the CR electron spectrum, since the mass ratio of electrons to protons (and nuclei) is so very different from their charge ratio(s). Very recent results on the spectra of positrons and electrons at the highest measured energies corroborate the existence of an electron knee, with the expected shape and at the predicted energy.
description: 9 pages, 8 figures. Note added on new CALET data. Published in PLB with cruel and unusual delay
Uma Análise Comparativa da Ciência Aberta, do Acesso Aberto e da Circulação de Conhecimento na América Latina e na África: Relatório Preliminar Brasil
Creators: name: Albagli, Sarita
name: Appel, André Luiz
name: Pacanaro Trinca, Tatiane
name: Alves, Larissa de Araújo
name: Leite, Nathaly
Publisher: name: Zenodo
Year: 2024

description: A pesquisa internacional Uma Análise Comparativa da Ciência Aberta, do Acesso Aberto e da Circulação de Conhecimento na América Latina e na África, iniciada em 2023 sob a coordenação do Global Research Institute of Paris (GRIP), associado à Université Paris-Cité, tem como objetivo identificar e compreender as percepções e práticas de pesquisadores/as de países da África e América Latina – África do Sul, Argentina, Brasil, México e Senegal –, em relação ao acesso aberto a publicações científicas e à cobrança de taxas processamento de artigos (APC - acrônimo do inglês "Article Processing Charges"). No Brasil, a pesquisa teve como público-alvo os pesquisadores bolsistas de Produtividade em Pesquisa (PQ) do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). O CNPq, por meio de uma parceria realizada com os coordenadores do Projeto GRIP-Brasil, vinculados ao Instituto Brasileiro de Informação em Ciência e Tecnologia (Ibict), encaminhou, em 30/08/2023, aos e-mails dos 15.426 pesquisadores PQ então cadastrados em sua base, o convite para participação na pesquisa, juntamente com o link para o questionário, o qual foi encerrado em 30/09/2023. O envio do questionário pelo CNPq contribuiu positivamente para a obtenção de uma taxa de resposta de 40,71%, o que é considerada uma taxa significativa e representativa, com base no cotejamento dos resultados com os dados do universo. Neste relatório preliminar, o capítulo 1 contextualiza a criação do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) e aborda as especificidades de seu sistema de classificação. Apresenta uma descrição geral das características e os principais dados sociodemográficos referentes ao público-alvo da pesquisa realizada no Brasil: os pesquisadores bolsistas de Produtividade em Pesquisa. Além disso, detalha os critérios de avaliação para admissão, enquadramento e classificação das bolsas de Produtividade em Pesquisa estabelecidos pelo CNPq. Por fim, apresenta um panorama sobre as ações e o estado da arte do acesso aberto e da ciência aberta no contexto brasileiro. No capítulo 2 são apresentadas as técnicas utilizadas para o tratamento dos dados após a conclusão do levantamento, além dos dados agregados de acordo com as seções, questões e variáveis do questionário. Trata-se de uma versão preliminar dos resultados da pesquisa realizada no Brasil, que serão posteriormente analisados comparativamente com os dados obtidos pelos demais países participantes da pesquisa. Publicações por cada país e de modo conjunto estão sendo planejadas e preparadas.
QARAQALPAQSTANDA AGRARLÍQ ILIMLER TARIYXÍNAN
Creators: name: Temirxanov, B.U.
Publisher: name: Zenodo
Year: 2024

description: Qoraqalpoǵistonda ilk agrar ilmlar shakllanishi. Qoraqalpoǵiston dehqonchilik ilmiy-tadqiqot institutı tashkil topishi. Agrar soxadagi yutuqlar. Qoraqalpoǵistonda sholi ekishning ilmiy asoslari. Agror sohadagi ilmiy hamkorliklar. Yangi navlar yaratilishi.
Does the Profit Motive Make Jack Nimble? Ownership Form and the Evolution of the U.S. Hospital Industry
Creators: name: Sujoy  Chakravarty
name: Gaynor, Martin
name: Klepper, Stephen
name: Vogt, William B.
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We examine the evolving structure of the U.S. hospital industry since 1970, focusing on how ownership form influences entry and exit behavior. We develop theoretical predictions based on the model of Lakdawalla and Philipson, in which for-profit and not-for-profit hospitals differ regarding their objectives and costs of capital. The model predicts for-profits would be quicker to enter and exit than not-for-profits in response to changing market conditions. We test this hypothesis using data for all U.S. hospitals from 1984 through 2000. Examining annual and regional entry and exit rates, for-profit hospitals consistently have higher entry and exit rates than not-for-profits. Econometric modeling of entry and exit rates yields similar patterns. Estimates of an ordered probit model of entry indicate that entry is more responsive to demand changes for for-profit than not-for-profit hospitals. Estimates of a discrete hazard model for exit similarly indicate that negative demand shifts increase the probability of exit more for for-profits than not-for-profits. Finally, membership in a hospital chain significantly decreases the probability of exit for for-profits, but not not-for-profits.
The Spectrum of 1ES0229 + 200 and the Cosmic Infrared Background
Creators: name: Stecker, F. W.
name: Scully, and S. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the effect of gamma-ray absorption by the extragalactic infrared radiation on intrinsic spectra predicted for 1ES0229+200 and compare our results with the observational data. We find agreement with our previous results on the shape of the IR spectral energy distribution (SED), contrary to the recent assertion of the HESS group. Our analysis indicates that 1ES0229+200 has a very hard intrinsic spectrum with a spectral index between 1.1 +/- 0.3 and 1.5 +/- 0.3 in the energy range between ~0.5 TeV and ~15 TeV. Under the assumptions that (1) the SED models of Stecker, Malkan & Scully (2006) are reasonable as derived from numerous detailed IR observations, and (2) spectral indexes in the range 1 < Γ< 1.5 have been shown to be obtainable from relativistic shock acceleration under the astrophysical conditions extant in blazar flares (Stecker, Baring & Summerlin 2007), the fits to the observations of 1ES0229+200 using our previous IR SEDs are consistent with both the IR and gamma-ray observations. Our analysis presents evidence indicating that the energy spectrum of relativistic particles in 1ES0229+200 is produced by relativistic shock acceleration, producing an intrinsic gamma-ray spectrum with index 1 < Γ< 1.5 and with no evidence of a peak in the SED up to energies ~15 TeV.
description: 3 pages, 1 figure, Astronomy & Astrophysics, in press
Quantum Monte Carlo formalism for dynamical pions and nucleons
Creators: name: Madeira, Lucas
name: Lovato, Alessandro
name: Pederiva, Francesco
name: Schmidt, Kevin E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In most simulations of nonrelativistic nuclear systems, the wave functions found solving the many-body Schrödinger equations describe the quantum-mechanical amplitudes of the nucleonic degrees of freedom. In those simulations the pionic contributions are encoded in nuclear potentials and electroweak currents, and they determine the low-momentum behavior. In this work we present an alternative quantum Monte Carlo formalism in which both relativistic pions and nonrelativistic nucleons are explicitly included in the quantum-mechanical states of the system. We report the renormalization of the nucleon mass as a function of the momentum cutoff, an Euclidean time density correlation function that deals with the short-time nucleon diffusion, and the pion cloud density and momentum distributions. In the two-nucleon sector we show that the interaction of two static nucleons at large distances reduces to the one-pion exchange potential, and we fit the low-energy constants of the contact interactions to reproduce the binding energy of the deuteron and two neutrons in finite volumes. We show that the method can be readily applied to light-nuclei.
description: 17 pages, 10 figures
Conceptual Modeling of Events Based on One-Category Ontology
Creators: name: Al-Fedaghi, Sabah
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In previous works, we proposed a one-category (entitled thimac) conceptual model called a thinging machine (TM), which integrates staticity (e.g., objects) and dynamism (e.g., events) without losing valuable aspects of diagrammatic intuition in conceptual modeling. We proposed applying TM to conceptual modeling in software engineering (e.g., on or above the level of UML as a conceptual modeling language). In this paper, to show such an application in software engineering, we first present a complete high-level description of a library service system to demonstrate the TM s applicability. Furthermore, we explore the TM s features, emphasizing the realization of thimacs as events. The purpose is to develop better understanding of the TM notions by contrasting them with their uses in related fields. The notion of an event plays a prominent role in many fields of study, including philosophy, linguistics, literary theory, probability theory, artificial intelligence, physics, and history. A TM event is a static thimac with a time breath (time subthimac) that infuses dynamism into the thimac. It arises from how the TM static region is infected with time. Such a view is contrasted with some philosophical and linguistics definitions of an event (e.g., unit of experience of Whitehead). We also raise interesting issues (e.g., event movement) in this study.
description: 12 pages, 21 figures
One-second coherence for a single electron spin coupled to a multi-qubit nuclear-spin environment
Creators: name: Abobeih, Mohamed H.
name: Cramer, Julia
name: Bakker, Michiel A.
name: Kalb, Norbert
name: Twitchen, Daniel J.
name: Markham, Matthew
name: Taminiau, Tim H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Single electron spins coupled to multiple nuclear spins provide promising multi-qubit registers for quantum sensing and quantum networks. The obtainable level of control is determined by how well the electron spin can be selectively coupled to, and decoupled from, the surrounding nuclear spins. Here we realize a coherence time exceeding a second for a single electron spin through decoupling sequences tailored to its microscopic nuclear-spin environment. We first use the electron spin to probe the environment, which is accurately described by seven individual and six pairs of coupled carbon-13 spins. We develop initialization, control and readout of the carbon-13 pairs in order to directly reveal their atomic structure. We then exploit this knowledge to store quantum states for over a second by carefully avoiding unwanted interactions. These results provide a proof-of-principle for quantum sensing of complex multi-spin systems and an opportunity for multi-qubit quantum registers with long coherence times.
Renormalization of the Neutrino Mass Operator
Creators: name: Babu, K. S.
name: Leung, C. N.
name: Pantaleone, J.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A small neutrino Majorana mass can arise in the Standard Model as an effective dimension 5 operator. We calculate the renormalization of this operator in the minimal Standard Model and in its two-Higgs-doublet and supersymmetric extensions. Renormalization from the scale of lepton number violation (e.g., the Planck scale or a GUT scale) to the weak scale decreases the strength of this operator by an order of magnitude or more if the top quark and Higgs boson masses are large. Neutrino mixing angles also run with momentum. We show instances where small mixing at a high scale becomes large at the weak scale, and vice versa.
description: 17 pages, LATEX. Preprint IUHET-252, UDHEP-93-03, BA-93-44
Selmer groups are intersection of two direct summands of the adelic cohomology
Creators: name: Gillibert, Florence
name: Gillibert, Jean
name: Gillibert, Pierre
name: Ranieri, Gabriele
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G05 (Primary), 14G25 (Secondary)

description: We give a positive answer to a Conjecture by Manjul Bhargava, Daniel M. Kane, Hendrik W. Lenstra Jr., Bjorn Poonen and Eric Rains, concerning the cohomology of torsion subgroups of elliptic curves over global fields. This implies that, given a global field $k$ and an integer $n$, for $100\%$ of elliptic curves $E$ defined over $k$, the $n$-th Selmer group of $E$ is the intersection of two direct summands of the adelic cohomology group $H^1(\mathbf{A},E[n])$. We also give examples of elliptic curves for which the conclusion of this conjecture does not hold.
description: 11 pages, LaTeX. A new statement, Theorem 1.4, has been added, together with a new section containing its proof. This shows that the conclusion of Theorem 1.1 is false if its hypotheses are dropped
Does Security Choice Matter in Venture Capital? The Case of Venture Debt
Creators: name: Indraneel  Chakraborty
name: Ewens, Michael
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: The switch from equity to debt in venture capital-backed entrepreneurial firms is rare, but uniquely informative. Using a novel dataset of financing decisions, we find that entrepreneurial firms that raise debt financing suffer from an average 40% post-debt valuation drop and a 26% lower probability of successful exit (IPO/acquisition). Venture capitalists with equity stakes lend to lower quality entrepreneurial firms compared to outside lenders, and debt from both precedes deterioration in firm quality. Our results do not imply that debt causes negative outcomes. Rather, we argue that debt helps maintain incentive alignment after adverse shocks to firm quality.
Statistical Inference for Incomplete Ranking Data: The Case of Rank-Dependent Coarsening
Creators: name: Fahandar, Mohsen Ahmadi
name: Hüllermeier, Eyke
name: Couso, Inés
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the problem of statistical inference for ranking data, specifically rank aggregation, under the assumption that samples are incomplete in the sense of not comprising all choice alternatives. In contrast to most existing methods, we explicitly model the process of turning a full ranking into an incomplete one, which we call the coarsening process. To this end, we propose the concept of rank-dependent coarsening, which assumes that incomplete rankings are produced by projecting a full ranking to a random subset of ranks. For a concrete instantiation of our model, in which full rankings are drawn from a Plackett-Luce distribution and observations take the form of pairwise preferences, we study the performance of various rank aggregation methods. In addition to predictive accuracy in the finite sample setting, we address the theoretical question of consistency, by which we mean the ability to recover a target ranking when the sample size goes to infinity, despite a potential bias in the observations caused by the (unknown) coarsening.
description: Proceedings of the 34th International Conference on Machine Learning (ICML 2017), 10 pages
Does Air Pollution Shorten Lives?
Creators: name: Lave, Lester B.
name: Seskin, Eugene P.
Publisher: name: Carnegie Mellon University
Year: 1995
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: The cause of a disease is often difficult to establish. For chronic diseases, establishing a cause and effect relationship is especially difficult. Many studies show that populations exposed to urban air pollution have a shorter life expectancy and higher incidence of lung cancer, emphysema, and other chronic respiratory diseases . Yet it is a long step to assert that this observed association between air pollution and ill health is proof that air pollution causes ill health and that steps ought to be taken to abate air pollution for public health reasons. There is disagreement among physicians as to whether air pollution causes lung cancer, bronchitis, or emphysema, or generally reduces life expectancy . A related argument is that the effect of air pollution is so slight that it is not a matter of public concern .
Join-the-Shortest Queue Diffusion Limit in Halfin-Whitt Regime: Tail Asymptotics and Scaling of Extrema
Creators: name: Banerjee, Sayan
name: Mukherjee, Debankur
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 60K25, 60J60, secondary 60K05, 60H20

description: Consider a system of $N$ parallel single-server queues with unit-exponential service time distribution and a single dispatcher where tasks arrive as a Poisson process of rate $λ(N)$. When a task arrives, the dispatcher assigns it to one of the servers according to the Join-the-Shortest Queue (JSQ) policy. Eschenfeldt and Gamarnik (2015) established that in the Halfin-Whitt regime where $(N-λ(N))/\sqrt{N}\toβ>0$ as $N\to\infty$, appropriately scaled occupancy measure of the system under the JSQ policy converges weakly on any finite time interval to a certain diffusion process as $N\to\infty$. Recently, it was further established by Braverman (2018) that the stationary occupancy measure of the system converges weakly to the steady state of the diffusion process as $N\to\infty$. In this paper we perform a detailed analysis of the steady state of the above diffusion process. Specifically, we establish precise tail-asymptotics of the stationary distribution and scaling of extrema of the process on large time-interval. Our results imply that the asymptotic steady-state scaled number of servers with queue length two or larger exhibits an Exponential tail, whereas that for the number of idle servers turns out to be Gaussian. From the methodological point of view, the diffusion process under consideration goes beyond the state-of-the-art techniques in the study of the steady-state of diffusion processes. Lack of any closed form expression for the steady state and intricate interdependency of the process dynamics on its local times make the analysis significantly challenging. We develop a technique involving the theory of regenerative processes that provides a tractable form for the stationary measure, and in conjunction with several sharp hitting time estimates, acts as a key vehicle in establishing the results.
description: 41 pages; To appear in the Annals of Applied Probability
Vertices and the CJT Effective Potential
Creators: name: Haeri, Bijan
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Cornwall-Jackiw-Tomboulis effective potential is modified to include a functional dependence on the fermion-gauge particle vertex, and applied to a quark confining model of chiral symmetry breaking.
description: 10 pages (latex), PURD-TH-93-12
PAC-Bayesian Bounds for Randomized Empirical Risk Minimizers
Creators: name: Alquier, Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The aim of this paper is to generalize the PAC-Bayesian theorems proved by Catoni in the classification setting to more general problems of statistical inference. We show how to control the deviations of the risk of randomized estimators. A particular attention is paid to randomized estimators drawn in a small neighborhood of classical estimators, whose study leads to control the risk of the latter. These results allow to bound the risk of very general estimation procedures, as well as to perform model selection.
Linguistic Divergence in Armenian Bible and Lectionary Palimpsests
Creators: name: Sargsyan, Hasmik
Publisher: name: Universität Hamburg
Year: 2023
Subjects: CSMC
manuscript cultures
DeLiCaTe
Caucasus
literacy
manuscript studies
ERC Grant

description: “Linguistic Divergence in Armenian Bible and Lectionary Palimpsests”, Removed and Rewritten: Palimpsests and Related Phenomena from a Cross-Cultural Perspective II, Centre for the Study of Manuscript Cultures, Hamburg.
description: The research for this presentation was funded by the European Research Council (ERC) under ERC´s Advanced Grant funding scheme – 'The Development of Literacy in the Caucasian Territories' (DeLiCaTe), grant ID: 101019006. The research was conducted within the scope of the Centre for the Study of Manuscript Cultures (CSMC) at Universität Hamburg.

Project Website: https://www.csmc.uni-hamburg.de/delicate/
CORDIS Project DOI: https://doi.org/10.3030/101019006
Do Groups Lie More Than Individuals? Honesty and Deception as a Function of Strategic Self-Interest
Creators: name: Cohen, Taya
name: Gunia, Brian C.
name: Kim-Jung, Sun Young
name: J. Keith  Murnighan
Publisher: name: Carnegie Mellon University
Year: 1981
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: An experiment tested whether groups lie more than individuals. Groups lied more than individuals when deception was guaranteed to maximize economic outcomes, but lied relatively less than individuals when honesty could be used strategically. These results suggest that groups are more strategic than individuals in that they will adopt whatever course of action best serves their economic interest.
Damping Rate of a Fermion in a Medium
Creators: name: D'Olivo, J. C.
name: Nieves, Jose F.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the relation between the damping rate of a massless, chiral fermion that propagates in a medium, and the rate $Γ$ of approach to equilibrium. It is proven that these quantities are equal, by showing that they are given by the same formula in terms of the imaginary part of the self-energy evaluated at the energy of the propagating fermion mode. This result is valid provided $Γ$ is defined by using the appropriate wave functions of the mode.
description: Version to appear in Phys. Rev. D