cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Os periódicos e as novas formas de avaliar a ciência: preprint e a abertura de avaliação
Creators: name: Sousa, Marcos Eduardo de
Publisher: name: Zenodo
Year: 2021
Subjects: preprint
abertura de avaliação
revisão por pares aberta

description: Apresentação de Marcos Eduardo de Sousa na live Os periódicos e as novas formas de avaliar a ciência: preprint e a abertura de avaliação, realizada pelo Fórum de Editores da Anpuh-Brasil em 11 de novembro de 2021. Link para a gravação da live: https://youtu.be/yXcZx8SYrIE
description: {"references": ["PUEBLA, Iratxe; SAFER, Rachel; TIERNEY, Heather. Preprints. COPE Discussion Document, 2018. Dispon\u00edvel em: https://publicationethics.org/files/u7140/COPE_Preprints_Mar18.pdf. Acesso em: 9 nov. 2021.", "SCIELO BRASIL. Crit\u00e9rios, pol\u00edtica e procedimentos para a admiss\u00e3o e a perman\u00eancia de peri\u00f3dicos na Cole\u00e7\u00e3o SciELO Brasil. SciELO Brasil. 13 maio 2020. Dispon\u00edvel em: https://wp.scielo.org/wp-content/uploads/20200500-Criterios-SciELO-Brasil.pdf. Acesso em: 28 jun. 2020."]}
Experimental quantum information processing with 43Ca+ ions
Creators: name: Benhelm, J.
name: Kirchmair, G.
name: Roos, C. F.
name: Blatt, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For quantum information processing (QIP) with trapped ions, the isotope 43Ca+ offers the combined advantages of a quantum memory with long coherence time, a high fidelity read out and the possibility of performing two qubit gates on a quadrupole transition with a narrow-band laser. Compared to other ions used for quantum computing, 43Ca+ has a relatively complicated level structure. In this paper we discuss how to meet the basic requirements for QIP and demonstrate ground state cooling, robust state initialization and efficient read out for the hyperfine qubit with a single 43Ca+ ion. A microwave field and a Raman light field are used to drive qubit transitions, and the coherence times for both fields are compared. Phase errors due to interferometric instabilities in the Raman field generation do not limit the experiments on a time scale of 100 ms. We find a quantum information storage time of many seconds for the hyperfine qubit.
description: 9 pages, 10 figures
Fluid Simulation on Neural Flow Maps
Creators: name: Deng, Yitong
name: Yu, Hong-Xing
name: Zhang, Diyang
name: Wu, Jiajun
name: Zhu, Bo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Graphics (cs.GR)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We introduce Neural Flow Maps, a novel simulation method bridging the emerging paradigm of implicit neural representations with fluid simulation based on the theory of flow maps, to achieve state-of-the-art simulation of inviscid fluid phenomena. We devise a novel hybrid neural field representation, Spatially Sparse Neural Fields (SSNF), which fuses small neural networks with a pyramid of overlapping, multi-resolution, and spatially sparse grids, to compactly represent long-term spatiotemporal velocity fields at high accuracy. With this neural velocity buffer in hand, we compute long-term, bidirectional flow maps and their Jacobians in a mechanistically symmetric manner, to facilitate drastic accuracy improvement over existing solutions. These long-range, bidirectional flow maps enable high advection accuracy with low dissipation, which in turn facilitates high-fidelity incompressible flow simulations that manifest intricate vortical structures. We demonstrate the efficacy of our neural fluid simulation in a variety of challenging simulation scenarios, including leapfrogging vortices, colliding vortices, vortex reconnections, as well as vortex generation from moving obstacles and density differences. Our examples show increased performance over existing methods in terms of energy conservation, visual complexity, adherence to experimental observations, and preservation of detailed vortical structures.
Principal Component Analysis of Gamma-Ray Bursts' Spectra
Creators: name: Bagoly, Z.
name: Horvath, I.
name: Balazs, L. G.
name: Borgonovo, L.
name: Larsson, S.
name: Meszaros, A.
name: Ryde, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Principal component analysis is a statistical method, which lowers the number of important variables in a data set. The use of this method for the bursts' spectra and afterglows is discussed in this paper. The analysis indicates that three principal components are enough among the eight ones to describe the variablity of the data. The correlation between spectral index alpha and the redshift suggests that the thermal emission component becomes more dominant at larger redshifts.
description: published in Nuovo Cimento
Multi-Photon Interference and Temporal Distinguishability of Photons
Creators: name: Ou, Z. Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A number of recent interference experiments involving multiple photons are reviewed. These experiments include generalized photon bunching effects, generalized Hong-Ou-Mandel interference effects and multi-photon interferometry for demonstrations of multi-photon de Broglie wavelength. The multi-photon states used in these experiments are from two pairs of photons in parametric down-conversion. We find that the size of the interference effect in these experiments, characterized by the visibility of interference pattern, is governed by the degree of distinguishability among different pairs of photons. Based on this discovery, we generalize the concept of multi-photon temporal distinguishability and relate it to a number of multi-photon interference effects. Finally, we make an attempt to interpret the coherence theory by the multi-photon interference via the concept of temporal distinguishability of photons.
description: fixed figures 4,5,7
The Eyring-Kramers law for potentials with nonquadratic saddles
Creators: name: Berglund, Nils
name: Gentz, Barbara
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J45, 31C15 (Primary), 60J60, 37H20 (Secondary)

description: The Eyring-Kramers law describes the mean transition time of an overdamped Brownian particle between local minima in a potential landscape. In the weak-noise limit, the transition time is to leading order exponential in the potential difference to overcome. This exponential is corrected by a prefactor which depends on the principal curvatures of the potential at the starting minimum and at the highest saddle crossed by an optimal transition path. The Eyring-Kramers law, however, does not hold whenever one of these principal curvatures vanishes, since it would predict a vanishing or infinite transition time. We derive the correct prefactor up to multiplicative errors that tend to one in the zero-noise limit. As an illustration, we discuss the case of a symmetric pitchfork bifurcation, in which the prefactor can be expressed in terms of modified Bessel functions, as well as bifurcations with two vanishing eigenvalues. The corresponding transition times are studied in a full neighbourhood of the bifurcation point. These results extend work by Bovier, Eckhoff, Gayrard and Klein, who rigorously analysed the case of quadratic saddles, using methods from potential theory.
Members of cooperatives: more heterogeneous, less satisfied?
Creators: name: Grashuis, Jasper
name: Cook, Michael Lee
name: Grashuis, Jasper
name: Cook, Michael Lee
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: member heterogeneity
subject: agricultural cooperative
subject: producer organization
subject: structural equation modeling
subject: member satisfaction

description: The ability to successfully engage in collective action is often related to group heterogeneity. In the case of farmer cooperatives, member heterogeneity is often assumed to relate negatively to long-term performance. However, applied research is lacking in part because of the difficulty in measuring and matching farm-level and firm-level constructs. Using 1,061 survey responses from members of an organic food and beverage marketing cooperative, we develop a solution by measuring heterogeneity in age, education, farm experience, farm size, and membership length as the absolute difference from the median, which is interpreted as the base case with zero heterogeneity. A structural equation model is developed to relate our measurement of member heterogeneity to membership satisfaction. The latent factor of member heterogeneity is manifested significantly by each measure of individual heterogeneity (except age). Furthermore, as expected, member heterogeneity has a negative relationship to the latent factor of membership satisfaction. Our study demonstrates an ability to measure heterogeneity in continuous as opposed to binary form (e.g. small or large, young or old), and to explore the heterogeneity-performance relationship with farm-level observations.
Índice h, Google Scholar, Índice h10 e Profile no Google Scholar
Creators: name: Sousa, Marcos Eduardo
Publisher: name: Zenodo
Year: 2020
Subjects: índice h
google scholar
índice h5
índice h10

description: Apresentação realizada a um grupo de editores de periódicos científicos do estado de Minas Gerais - Brasil e ter por objetivo esclarecer com relação ao que é o índice h, sua inserção no Google Scholar (como índice h5), a proposta de um índice h10 para avaliação de periódicos nacionais, o software Publish or Perish e o Profile do Google Scholar
description: {"references": ["GOOGLE SCHOLAR METRICS. Google Scholar Metrics - Coverage of Publications. Google. 2020. Dispon\u00edvel em: https://scholar.google.com/intl/en/scholar/metrics.html#coverage. Acesso em: 21 fev. 2021.", "HARZING, A. W. Publish or Perish. 2007. Dispon\u00edvel em: https://harzing.com/resources/publish-or-perish. Acesso em: 17 set. 2019.", "HIRSCH, J. E. An index to quantify an individual's scientific research output. Proceedings of the National Academy of Sciences, v. 102, n. 46, p. 16569\u201316572, 15 nov. 2005. DOI 10.1073/pnas.0507655102. Dispon\u00edvel em: http://www.pnas.org/cgi/doi/10.1073/pnas.0507655102. Acesso em: 6 out. 2020.", "MART\u00cdN-MART\u00cdN, Alberto; THELWALL, Mike; ORDUNA-MALEA, Enrique; DELGADO L\u00d3PEZ-C\u00d3ZAR, Emilio. Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations' COCI: a multidisciplinary comparison of coverage via citations. Scientometrics, n. 0123456789, 2020. DOI 10.1007/s11192-020-03690-4. Dispon\u00edvel em: https://doi.org/10.1007/s11192-020-03690-4. Acesso em: 5 out. 2020."]}
Electronic and magnetic properties of K$_{2}$CuP$_{2}$O$_{7}$ - a model S=1/2 Heisenberg chain system
Creators: name: Nath, R.
name: Kasinathan, Deepa
name: Rosner, H.
name: Baenitz, M.
name: Geibel, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The electronic and magnetic properties of K$_{2}$CuP$_{2}$O$_{7}$ were investigated by means of susceptibility, specific heat and $^{31}$P nuclear magnetic resonance (NMR) measurements and by LDA band structure calculations. The temperature dependence of the NMR shift $K(T)$ is well described by the $S=1/2$ Heisenberg antiferromagnetic chain (HAF) model with nearest neighbor exchange $J_{1}$ $\simeq $ $(141\pm 5)$ K. The corresponding mapping of an LDA-derived tight-binding model leads to $J_{1}^{LDA}$ $\simeq$ 196 K. The spin lattice relaxation rate $1/T_{1}$ decreases with temperature below 300 K but becomes nearly temperature independent between 30 K and 2 K as theoretically expected for an $S = {1/2}$ HAF chain. None of the investigated properties give any evidence for long range magnetic order above 2K, in agreement with the results of the band structure calculation, which yield extremely weak exchange to the next nearest neighbor (NNN) and a very small and frustrated inter-chain exchange. Thus, K$_{2}$CuP$_{2}$O$_{7}$ seems to be a better realization of a nearest neighbor $S = {1/2}$ HAF chain than the compounds reported so far.
description: 9 pages, 8 figures. Accepted in PRB 2008
Canonical Noether and the energy-momentum non-uniqueness problem in linearized gravity
Creators: name: Baker, Mark Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Recent research has highlighted the non-uniqueness problem of energy-momentum tensors in linearized gravity; many different tensors are published in the literature, yet for particular calculations a unique expression is required. It has been shown that (A) none of these spin-2 energy-momentum tensors are gauge invariant and (B) the Noether and Hilbert energy-momentum tensors are not, in general, equivalent; therefore uniqueness criteria is difficult to specify. Conventional wisdom states that the various published energy-momentum tensors for linearized gravity can be derived from the canonical Noether energy-momentum tensor of spin-2 Fierz-Pauli theory by adding ad-hoc 'improvement' terms (the divergence of a superpotential and terms proportional to the equations of motion), that these superpotentials are in some way unique or physically significant, and that this implies some meaningful connection to the Noether procedure. To explore this question of uniqueness, we consider the most general possible energy-momentum tensor for linearized gravity with free coefficients using the Fock method. We express this most general energy-momentum tensor as the canonical Noether tensor, supplemented by the divergence of a general superpotential plus all possible terms proportional to the equations of motion. We then derive systems of equations which we solve in order to prove several key results for spin-2 Fierz-Pauli theory, most notably that there are infinitely many conserved energy-momentum tensors derivable from the 'improvement' method, and there are infinitely many conserved symmetric energy-momentum tensors that follow from specifying the Belinfante superpotential alone. $\dots$ since there are infinitely many energy-momentum tensors of this form, no meaningful or unique connection to Noether's first theorem can be claimed by application of the canonical Noether 'improvement' method.
description: 25 pages
X-ray Super-Flares From Pre-Main Sequence Stars: Flare Energetics And Frequency
Creators: name: Getman, Konstantin V.
name: Feigelson, Eric D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Solar-type stars exhibit their highest levels of magnetic activity during their early convective pre-main sequence (PMS) phase of evolution. The most powerful PMS flares, super-flares and mega-flares, have peak X-ray luminosities of $\log(L_X)=30.5-34.0$~erg~s$^{-1}$ and total energies $\log(E_X)=34-38$~erg. Among $>24,000$ X-ray selected young ($t<5$~Myr) members of 40 nearby star-forming regions from our earlier $Chandra$ MYStIX and SFiNCs surveys, we identify and analyze a well-defined sample of 1,086 X-ray super-flares and mega-flares, the largest sample ever studied. Most are considerably more powerful than optical/X-ray super-flares detected on main sequence stars. This study presents energy estimates of these X-ray flares and the properties of their host stars. These events are produced by young stars of all masses over evolutionary stages ranging from protostars to diskless stars, with the occurrence rate positively correlated with stellar mass. Flare properties are indistinguishable for disk-bearing and diskless stars indicating star-disk magnetic fields are not involved. A slope $α\simeq2$ in the flare energy distributions $dN/dE_X \propto E_X^{-α}$ is consistent with those of optical/X-ray flaring from older stars and the Sun. Mega-flares ($\log(E_X) > 36.2$~erg) from solar-mass stars have occurrence rate of $1.7_{-0.6}^{+1.0}$ flares/star/year and contribute at least $10-20$\% to the total PMS X-ray energetics. These explosive events may have important astrophysical effects on protoplanetary disk photoevaporation, ionization of disk gas, production of spallogenic radionuclides in disk solids, and hydrodynamic escape of young planetary atmospheres. Our following paper details plasma and magnetic loop modeling of the $>50$ brightest X-ray mega-flares.
description: 36 pages, 12 figures, 4 tables. Accepted for publication in The Astrophysical Journal
Additional file 1 of Post-trial perceptions of a symptom-based TB screening intervention in South Africa: implementation insights and future directions for TB preventive healthcare services
Creators: name: Salazar-Austin, Nicole
name: Milovanovic, Minja
name: West, Nora S.
name: Molefi Tladi
name: Barnes, Grace Link
name: Variava, Ebrahim
name: Martinson, Neil
name: Chaisson, Richard E.
name: Kerrigan, Deanna
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1.
Highlights from the Pierre Auger Observatory
Creators: name: Salamida, Francesco
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Pierre Auger Observatory is a unique facility designed to study ultra-high energy cosmic rays, with energies up to 10$^{20}$ eV and beyond. The Observatory is located in Argentina and comprises more than 1600 water Cherenkov detectors spread over an area of 3000 square kilometers overlooked by Fluorescence detectors. The first phase of the Observatory's data-taking began in 2004 and continued until the end of 2021. In this contribution, the results from the Phase~I data analysis of the Pierre Auger Observatory are presented. They include, among others, measurements of the cosmic-ray energy spectrum, composition, and arrival direction anisotropy. The Phase~I results from the Pierre Auger Observatory provide major advances in the understanding of the ultra-high energy cosmic ray phenomena and lay the foundation for second-phase studies with the upgraded AugerPrime detector. The status of the AugerPrime upgrade and its performance will be also discussed.
description: 16 pages, proceedings of 38th ICRC in Nagoya
The causes of scientific disputes in impact assessment and management : the Utah mines case
Creators: name: Martin, Brian Randall
Publisher: name: University of British Columbia
Year: 2010

description: This thesis identifies the causes of disputes between scientists who are involved in environmental impact assessment and management (EIAM), and suggests some critical elements of scientific dispute resolution processes, particularly peer review. It does this within the context of a case study, the environmental assessment, monitoring, and management of the Island Copper Mine marine tailings discharge into Rupert Inlet, B.C. The events of this case are analysed, drawing on literature on the scientist's role in impact assessment and management, and on the philosophy and sociology of science literature. The case study and literature review indicate that the causes of such scientific disputes are complex. The complexity and uncertainty of the physical and biological processes of a fjord system are one cause. Logistical failings in integrating scientists into the process are another: poor timing of scientists' efforts; failures of communication; and lack of accountability are examples. Poor methodology and inadequate research design also caused disputes. The transdisciplinary nature of the scientific problems common to EIAM causes disagreements of a different nature-- over the relevance of various disciplines' research foci to the problem at hand, and over what constitutes acceptable scientific practice. Value and interest conflicts between scientists, which influence both the trajectory of research and the interpretation of its results, complete the typology of the causes of disputes. The thesis recommends the elements of peer review processes necessary to resolve these disputes. Peer review should be pre-emptive, by focussing on research design where possible, and should be representative of the range of relevant scientific disciplines, and should facilitate constructive solutions rather than the defense of positions.
Additional file 1 of Assessing the predictive value of common gait measure for predicting falls in patients presenting with suspected normal pressure hydrocephalus
Creators: name: Davis, Alexander
name: Luciano, Mark
name: Moghekar, Abhay
name: Yasar, Sevil
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Additional file 1. Normal Pressure Hydrocephalus – Fall Risk Questionnaire.
Soft gamma-ray galactic ridge emission as unveiled by SPI aboard INTEGRAL
Creators: name: Knödlseder, Jürgen
name: Lonjou, Vincent
name: Weidenspointner, Georg
name: Jean, Pierre
name: Strong, Andy
name: Diehl, Roland
name: Cordier, Bertrand
name: Schanne, Stéphane
name: Winkler, Christoph
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of the soft gamma-ray (200 keV - 1 MeV) galactic ridge emission is one of the long-standing mysteries in the field of high-energy astrophysics. Population studies at lower energies have shown that emission from accreting compact objects gradually recedes in this domain, leaving place to another source of gamma-ray emission that is characterised by a hard power-law spectrum extending from 100 keV up to 100 MeV The nature of this hard component has remained so far elusive, partly due to the lack of sufficiently sensitive imaging telescopes that would be able to unveil the spatial distribution of the emission. The SPI telescope aboard INTEGRAL allows now for the first time the simultaneous imaging of diffuse and point-like emission in the soft gamma-ray regime. We present here all-sky images of the soft gamma-ray continuum emission that clearly reveal the morphology of the different emission components. We discuss the implications of our results on the nature of underlying emission processes and we put our results in perspective of GLAST studies of diffuse galactic continuum emission.
Additional file 1 of Stillbirth maternity care measurement and associated factors in population-based surveys: EN-INDEPTH study
Creators: name: Stefano, Lydia Di
name: Bottecchia, Matteo
name: Yargawa, Judith
name: Akuze, Joseph
name: M. Moinuddin Haider
name: Galiwango, Edward
name: Dzabeng, Francis
name: Fisker, Ane B.
name: Bisrat Misganaw Geremew
name: Cousens, Simon
name: Lawn, Joy E.
name: Blencowe, Hannah
name: Waiswa, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 1. Framework for factors associated with stillbirths
Mind the gap. Cartografie urbane di luoghi dimenticati
Creators: name: D'Angelo, Claudia
Publisher: name: Dipartimento delle Arti - Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: situazionismo; Robert Smithson; On Kawara; Jeremy Wood; cartografia cognitiva; Henri Lefebvre

description: Il saggio si propone di approfondire i lavori degli artisti che, a partire dalla fine degli anni ’60, si sono confrontati con la cartografia come mezzo per esperire la realtà. Sulla scorta del concetto di «cartografia cognitiva» sviluppata da Henri Lefebvre (1901-1991) in seno alla più ampia Critica della vita quotidiana e del rivoluzionario Urbanisme unitaire teorizzato dai Situazionisti, un consistente numero di artisti ha scelto la mappatura - sia essa fisica o mentale - come mezzo di interazione e di azione sul contesto urbano. Sintetizzando performance e riflessione concettuale, artisti come Robert Smithson (1938), On Kawara (1933) e Jeremy Wood (1976) hanno saputo ‘misurare’ l’ambiente urbano indagandone gli spazi al di fuori dei consueti circuiti quotidiani e per questo ‘dimenticati’.
description: INTRECCI d'arte, N° 3 (2014)
Declaration of Intention of Raffaeli Cavallucci
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1909

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by: Raffaeli Cavallucci  Applicant age: 47Occupation: LaborerCountry of Origin: ItalyDate of Birth: July 22, 1861Sailed to the US aboard the vessel: Uncerland   Declaration submitted and sworn: 1 February 1909Residing in: Egg Harbor City, NJ.
Study of the hadronic production of kaon pairs below the threshold for the phi meson
Creators: name: Moskal, P.
name: Silarski, M.
name: Budzanowski, A.
name: Czerwinski, E.
name: Czyzykiewicz, R.
name: Gil, D.
name: Grzonka, D.
name: Janusz, M.
name: Jarczyk, L.
name: Kamys, B.
name: Khoukaz, A.
name: Klaja, P.
name: Oelert, W.
name: Piskor-Ignatowicz, C.
name: Przerwa, J.
name: Rejdych, B.
name: Ritman, J.
name: Sefzick, T.
name: Siemaszko, M.
name: Smyrski, J.
name: Taschner, A.
name: Winter, P.
name: Wolke, M.
name: Wustner, P.
name: Zielinski, M. J.
name: Zipper, W.
name: Zdebik, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The near threshold production of K+K- pairs in proton-proton collisions has been investigated at the cooler synchrotron COSY below and above the threshold for the $ϕ$ meson using the COSY-11 and ANKE facilities, respectively. The excitation function determined for the pp-->ppK+K- reaction revealed a statistically significant enhancement close to the threshold which may plausibly be assigned to the influence of the K-p interaction. In addition, observed consistently by both groups, a strong enhancement at low values of the ratio of the K-p to K+p invariant mass distributions shows that the proton interacts much stronger with K- than with K+. In this report we focus on the measurements performed by the COSY-11 collaboration. We explain the experimental method used and present main results of completed analyses as well as a new qualitative elaboration of the ppK+K- events population on the Goldhaber plot. We conclude with the observation that event densities increase at the region where the influence from the K+K- interaction is expected.
description: 5 pages, 5 figures, Talk given at International Workshop on e+ e- Collisions from Phi to Psi (PHIPSI08), Frascati, Italy, 7-10 Apr 2008
Scalable Personalised Item Ranking through Parametric Density Estimation
Creators: name: Togashi, Riku
name: Kato, Masahiro
name: Otani, Mayu
name: Sakai, Tetsuya
name: Satoh, Shin'ichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Learning from implicit feedback is challenging because of the difficult nature of the one-class problem: we can observe only positive examples. Most conventional methods use a pairwise ranking approach and negative samplers to cope with the one-class problem. However, such methods have two main drawbacks particularly in large-scale applications; (1) the pairwise approach is severely inefficient due to the quadratic computational cost; and (2) even recent model-based samplers (e.g. IRGAN) cannot achieve practical efficiency due to the training of an extra model. In this paper, we propose a learning-to-rank approach, which achieves convergence speed comparable to the pointwise counterpart while performing similarly to the pairwise counterpart in terms of ranking effectiveness. Our approach estimates the probability densities of positive items for each user within a rich class of distributions, viz. \emph{exponential family}. In our formulation, we derive a loss function and the appropriate negative sampling distribution based on maximum likelihood estimation. We also develop a practical technique for risk approximation and a regularisation scheme. We then discuss that our single-model approach is equivalent to an IRGAN variant under a certain condition. Through experiments on real-world datasets, our approach outperforms the pointwise and pairwise counterparts in terms of effectiveness and efficiency.
description: Accepted by SIGIR'21
Unlocking employee's green behavior in fertilizer industry: the role of green HRM practices and psychological ownership
Creators: name: Waqas, Muhammad
name: Yahya, Farzan
name: Ahmed, Ammar
name: Rasool, Yasir
name: Hongbo, Li
name: Waqas, Muhammad
name: Yahya, Farzan
name: Ahmed, Ammar
name: Rasool, Yasir
name: Hongbo, Li
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: employee green behavior
subject: green HRM
subject: psychological ownership
subject: ability-motivation-opportunity theory
subject: PLS-SEM

description: The engineering of agrochemicals and inorganic fertilizers indirectly facilitates the emissions of NO2 and CO2. The extensive use of pesticides and inorganic chemical fertilizers has drawn the world’s attention to green practices. Grounded on the ability-motivation-opportunity (AMO) theory, we investigated the effect of green human resource management (GHRM) practices on employees’ green behavior with the mediating role of psychological ownership. We applied the partial least square structural equation modeling (PLS-SEM) technique to 279 responses acquired from the fertilizer manufacturing firm employees. The results show that GHRM practices (green competence building, green motivation enhancing, and green employee involvement practices) significantly improve employee green behavior. Additionally, GHRM practices enhance the sense of ownership of nature among employees due to which they involve themselves proactively in eco-friendly activities and behavior.
Capitalizing on Next-Generation Optical Communication Systems with Proactive Multi-Period Network Planning
Creators: name: Müller, Jasper
name: Patri, Sai Kireet
name: Di Rosa, Gabriele
name: Autenrieth, Achim
name: Elbers, Jörg-Peter
name: Mas-Machuca, Carmen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Optical transport network operators typically follow a pay-as-you-grow strategy for their network deployment. We propose a proactive multi-period planning approach based on heuristic network planning, supporting this deployment strategy while enabling efficient network utilization through next-generation technology. We report 60% less provisioned lightpaths.
description: The work has been partially funded by the German Federal Ministry of Education and Research in the project STARFALL (16KIS1418K)
Semiparametrically efficient rank-based inference for shape II. Optimal R-estimation of shape
Creators: name: Hallin, Marc
name: Oja, Hannu
name: Paindaveine, Davy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62M15, 62G35 (Primary)

description: A class of R-estimators based on the concepts of multivariate signed ranks and the optimal rank-based tests developed in Hallin and Paindaveine [Ann. Statist. 34 (2006)] is proposed for the estimation of the shape matrix of an elliptical distribution. These R-estimators are root-n consistent under any radial density g, without any moment assumptions, and semiparametrically efficient at some prespecified density f. When based on normal scores, they are uniformly more efficient than the traditional normal-theory estimator based on empirical covariance matrices (the asymptotic normality of which, moreover, requires finite moments of order four), irrespective of the actual underlying elliptical density. They rely on an original rank-based version of Le Cam's one-step methodology which avoids the unpleasant nonparametric estimation of cross-information quantities that is generally required in the context of R-estimation. Although they are not strictly affine-equivariant, they are shown to be equivariant in a weak asymptotic sense. Simulations confirm their feasibility and excellent finite-sample performances.
description: Published at http://dx.doi.org/10.1214/009053606000000948 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Additional file 2 of Stillbirth maternity care measurement and associated factors in population-based surveys: EN-INDEPTH study
Creators: name: Stefano, Lydia Di
name: Bottecchia, Matteo
name: Yargawa, Judith
name: Akuze, Joseph
name: M. Moinuddin Haider
name: Galiwango, Edward
name: Dzabeng, Francis
name: Fisker, Ane B.
name: Bisrat Misganaw Geremew
name: Cousens, Simon
name: Lawn, Joy E.
name: Blencowe, Hannah
name: Waiswa, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 2. Additional methods. Additional file 2.1: Background overview of the five HDSS sites. Additional file 2.2: Details of selection of women with a livebirth surviving the neonatal period. Additional file 2.3: Questions on stillbirths and maternity care asked in EN-INDEPTH survey. Additional file 2.3A: Questions on stillbirths asked in EN-INDEPTH survey1. Additional file 2.3B: Questions on maternity care asked in EN-INDEPTH survey. Additional file 2.4: Calculation of survey weights.
Balanced Gain-and-Loss Optical Waveguides: Exact Solutions for Guided Modes in Susy-QM
Creators: name: Cruz, Sara Cruz y
name: Romero-Osnaya, Alejandro
name: Rosas-Ortiz, Oscar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The construction of exactly solvable refractive indices allowing guided TE modes in optical waveguides is investigated within the formalism of Darboux-Crum transformations. We apply the finite-difference algorithm for higher-order supersymmetric quantum mechanics to obtain complex-valued refractive indices admitting all-real eigenvalues in their point spectrum. The new refractive indices are such that their imaginary part gives zero if it is integrated over the entire domain of definition. This property, called condition of zero total area, ensures the conservation of optical power so the refractive index shows balanced gain and loss. Consequently, the complex-valued refractive indices reported in this work include but are not limited to the parity-time invariant case.
description: 21 pages, 7 figures
Supplementary document for Spectral Encoding based on Narrowband/Broadband Modulations of QBIC for Computational Spectral Imaging - 7458690.pdf
Creators: name: Huang, Lianwei
name: Tao, Chenning
name: Zhang, Yusheng
name: ling, qiang
name: Chen, Daru
name: Zheng, Zhenrong
name: Li, Qiang
name: Zhu, Huanzheng
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental Document
Additional file 3 of Stillbirth maternity care measurement and associated factors in population-based surveys: EN-INDEPTH study
Creators: name: Stefano, Lydia Di
name: Bottecchia, Matteo
name: Yargawa, Judith
name: Akuze, Joseph
name: M. Moinuddin Haider
name: Galiwango, Edward
name: Dzabeng, Francis
name: Fisker, Ane B.
name: Bisrat Misganaw Geremew
name: Cousens, Simon
name: Lawn, Joy E.
name: Blencowe, Hannah
name: Waiswa, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 3. STROBE guidelines checklist
Building consumer trust in online food marketplaces: the role of WeChat marketing
Creators: name: Tan, Si
name: Chen, Weiping
name: Tan, Si
name: Chen, Weiping
Publisher: name: Unknown
Year: 2021
Subjects: subject: Consumer/Household Economics
subject: Marketing
subject: FOS: Economics and business
subject: consumer trust
subject: WeChat marketing
subject: information quality
subject: presence
subject: online food marketplaces

description: Consumer trust receives high attention in food marketplaces, however, little research focuses on how to build consumer trust in the online context. Drawing on signaling theory and presence theory, this paper proposes a comprehensive framework with which to explain the influence mechanism of WeChat food marketing on consumer trust. Utilizing data from 672 consumers in China’s WeChat food marketplaces, this study conducted a partial least squares structural equation modeling analysis. The findings indicate that food seller’s content behavior and interactive behavior on WeChat positively affect consumer trust through the mediating effect of consumer’s perceived information quality and presence. And consumer trust can enhance consumer loyalty. This study extends the research on consumer trust in online food marketplaces. It also provides certain theoretical guidance for food marketers to make better use of WeChat for trust building.
Understanding the low use rate of food nutrition information in China
Creators: name: Guan, Lijun
name: Zhang, Yan
name: Jin, Shaosheng
name: Zhou, Lin
name: Guan, Lijun
name: Zhang, Yan
name: Jin, Shaosheng
name: Zhou, Lin
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: International Development
subject: nutritional information
subject: label scheme
subject: ignorance
subject: attitudes
subject: China

description: Based on a survey of 1,225 consumers in 10 cities of five representative provinces, this study was designed to understand the low use rate of food nutrition information in China after a mandatory label policy was instituted in 2013. We found that consumers always neglect nutrition information at point-of-purchase. But they refer to simplified front-of-pack labels more frequently than detailed back-of-pack labels. Fat information is most concerned especially by females; whereas sodium information attracts the least concern. Ignorance, a belief that the information is un-useful are the main cause of the low use rate of nutritional information. Thus, simplified and striking tag formats should be used to capture consumers’ attention and convince them of the importance of nutrition information. The findings can also be used as a guide in the design of food marketing programs directing at different consumer groups for food processors targeting the Chinese market.
Structure, size, and statistical properties of chaotic components in a mixed-type Hamiltonian system
Creators: name: Lozej, Črt
name: Robnik, Marko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We perform a detailed study of the chaotic component in mixed-type Hamiltonian systems on the example of a family of billiards [introduced by Robnik in J. Phys. A: Math. Gen. 16, 3971 (1983)]. The phase space is divided into a grid of cells and a chaotic orbit is iterated a large number of times. The structure of the chaotic component is discerned from the cells visited by the chaotic orbit. The fractal dimension of the border of the chaotic component for various values of the billiard shape parameter is determined with the box-counting method. The cell-filling dynamics is compared to a model of uncorrelated motion, the so-called random model [Robnik et al. J. Phys. A: Math. Gen. 30, L803 (1997)], and deviations attributed to sticky objects in the phase space are found. The statistics of the number of orbit visits to the cells is analyzed and found to be in agreement with the random model in the long run. The stickiness of the various structures in the phase space is quantified in terms of the cell recurrence times. The recurrence time distributions in a few selected cells as well as the mean and standard deviation of recurrence times for all cells are analyzed. The standard deviation of cell recurrence time is found to be a good quantifier of stickiness on a global scale. Three methods for determining the measure of the chaotic component are compared and the measure is calculated for various values of the billiard shape parameter. Lastly, the decay of correlations and the diffusion of momenta is analyzed.
description: 14 pages, 13 figures, 2 tables
The downfall of Transmar Cocoa
Creators: name: Feuz, Ryan
name: Montoya, Joseph
name: Feuz, Ryan
name: Montoya, Joseph
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: ethics
subject: cocoa supply
subject: commodity trading
subject: borrowing base

description: As a large cocoa bean trader, Transmar group ltd. bought millions of dollars’ worth of beans relying on financing from a syndicate of banks. To monitor amounts of eligible collateral, the banks required Transmar prepare periodic borrowing base (BB) reports. At some point, Transmar developed a discrepancy in collateral recorded on the BB report versus the amount of funds borrowed. The case discusses how this discrepancy grew larger as many questionable and fraudulent entries were included on subsequent BB reports. The case is written from the perspective of Peter B. Johnson, head of Transmar’s European affiliate and son of CEO and founder of Transmar, Peter G. Johnson. In late 2014, Peter B. Johnson first learned about the deceptive practices being employed in preparing the BB reports. How will he react? The case is also rich in details surrounding the cocoa industry supply chain and history of cocoa production.
Resilient asynchronous primal Schur method
Creators: name: Gbikpi-Benissan, Guillaume
name: Magoulès, Frédéric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper introduces the application of the asynchronous iterations theory within the framework of the primal Schur domain decomposition method. A suitable relaxation scheme is designed, which asynchronous convergence is established under classical spectral radius conditions. For the usual case where the local Schur complement matrices are not constructed, suitable splittings only based on explicitly generated matrices are provided. Numerical experiments are conducted on a supercomputer for both Poisson's and linear elasticity problems. The asynchronous Schur solver outperformed the classical conjugate-gradient-based one in case of compute node failures.
Additional file 4 of Stillbirth maternity care measurement and associated factors in population-based surveys: EN-INDEPTH study
Creators: name: Stefano, Lydia Di
name: Bottecchia, Matteo
name: Yargawa, Judith
name: Akuze, Joseph
name: M. Moinuddin Haider
name: Galiwango, Edward
name: Dzabeng, Francis
name: Fisker, Ane B.
name: Bisrat Misganaw Geremew
name: Cousens, Simon
name: Lawn, Joy E.
name: Blencowe, Hannah
name: Waiswa, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 4. Additional results. Additional file 4.1: Don’t know and missing responses by pregnancy outcomes for selected DHS-7 standard pregnancy and postnatal care questions. Additional file 4.2: Data errors in timing of postnatal care questions. Additional file 4.3: Comparison of selected maternal care indicators by outcome. Additional file 4.4: Distribution of age at first antenatal care visit by outcome. Additional file 4.4A: Distribution of age at first ANC reported in weeks by outcome (n=501). Additional file 4.4B: Distribution of age at first ANC reported in months by outcome (n=13,400). Additional file 4.5: Distribution of post-delivery length of stay in facility in days. Additional file 4.6: Distribution of age at first postnatal care visit in hours
Additional file 5 of Stillbirth maternity care measurement and associated factors in population-based surveys: EN-INDEPTH study
Creators: name: Stefano, Lydia Di
name: Bottecchia, Matteo
name: Yargawa, Judith
name: Akuze, Joseph
name: M. Moinuddin Haider
name: Galiwango, Edward
name: Dzabeng, Francis
name: Fisker, Ane B.
name: Bisrat Misganaw Geremew
name: Cousens, Simon
name: Lawn, Joy E.
name: Blencowe, Hannah
name: Waiswa, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 5. Ethical approval of local Institutional Review Boards
Tra storia e leggenda. Indagini sul network artistico tra Sofonisba Anguissola, Giulio Clovio e Levina Teerlinc
Creators: name: Leemans, Annemie
Publisher: name: Dipartimento delle Arti - Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: Sofonisba Anguissola; Giulio Clovio; Levina Teerlinc; Annibal Caro;

description: L’articolo indaga il rapporto tra due miniatori: il miniatore croato Giulio Clovio e la miniatrice fiamminga Levina Teerlinc. La ricerca parte da una lettera di Annibale Caro databile agli anni ’40 del Cinquecento, scritta a nome di Giulio Clovio. La lettera è indirizzata a una giovane miniatrice, che non è nominata ma che può essere identificata con Levina Teerlinc, le cui caratteristiche corrispondono al profilo della destinataria. Fulcro dello scritto è uno scambio di autoritratti fra Clovio e la donna; la prova che Levina Teerlinc inviò a Clovio un autoritratto si trova nel testamento dell’artista croato, che ricorda «il ritratto di Livinia meniatrice».
La storiografia ha collegato questa vicenda al ritratto di Giulio Clovio dipinto da Sofonisba Anguissola, nel quale il croato è effigiato con un ritratto miniato in mano. Federico Zeri, proprietario del ritratto fino al 1998, riteneva che questa miniatura raffigurasse l’autoritratto di Levina Teerlinc, mentre l’articolo propone trattarsi di un autoritratto di Sofonisba Anguissola. La dimostrazione è data dal confronto con un altro ritratto della pittrice cremonese, quello del suo maestro Bernardino Campi, effigiato mentre ritrae lei stessa. In entrambi i dipinti il maestro ritrae l’allieva Sofonisba: Bernardino Campi è il suo maestro di pittura, mentre Giulio Clovio è il suo maestro di miniatura. Clovio, come Campi, viene raffigurato nell’atto di dipingere, con il pennello in mano e lo sguardo rivolto allo spettatore.
L’articolo descrive esaustivamente la provenienza del ritratto di Clovio e dà particolare rilievo al tipo di cappello con cui è raffigurato il miniatore, confrontandolo con quello, simile, indossato da un suo contemporaneo inglese.
Infine, lo studio propone di dare risposta ad alcune questioni irrisolte sul rapporto tra Clovio e Levina: indica Francisco de Holanda come intermediario tra i due, rettifica le date di nascita e di matrimonio di Levina e conferma la sua assenza dalle Fiandre prima del suo soggiorno inglese. Non è quindi escluso che Levina Teerlinc abbia trascorso un periodo in Italia negli anni ’40 del Cinquecento e sia stata allieva di Giulio Clovio.
description: INTRECCI d'arte, N° 3 (2014)