cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
What Makes a Top-Performing Precision Medicine Search Engine? Tracing Main System Features in a Systematic Way
Creators: name: Faessler, Erik
name: Oleynik, Michel
name: Hahn, Udo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.3; H.3.1; J.3
subject: 68P20 (Primary), 92C50, 92Dxx (Secondary)

description: From 2017 to 2019 the Text REtrieval Conference (TREC) held a challenge task on precision medicine using documents from medical publications (PubMed) and clinical trials. Despite lots of performance measurements carried out in these evaluation campaigns, the scientific community is still pretty unsure about the impact individual system features and their weights have on the overall system performance. In order to overcome this explanatory gap, we first determined optimal feature configurations using the Sequential Model-based Algorithm Configuration (SMAC) program and applied its output to a BM25-based search engine. We then ran an ablation study to systematically assess the individual contributions of relevant system features: BM25 parameters, query type and weighting schema, query expansion, stop word filtering, and keyword boosting. For evaluation, we employed the gold standard data from the three TREC-PM installments to evaluate the effectiveness of different features using the commonly shared infNDCG metric.
description: Accepted for SIGIR2020, 10 pages
A website for attracting Ph.D. students to Loughborough University and the Department
Creators: name: Walker, Olwen
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A website for attracting Ph.D. students to Loughborough University and the Department
GRB 051221A and Tests of Lorentz Symmetry
Creators: name: Martinez, Maria Rodriguez
name: Piran, Tsvi
name: Oren, Yonatan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Various approaches to quantum gravity suggest the possibility of violation of Lorentz symmetry at very high energies. In these cases we expect a modification at low energies of the dispersion relation of photons that contains extra powers of the momentum suppressed by a high energy scale. These terms break boost invariance and can be tested even at relatively low energies. We use the light curves of the very bright short Gamma-Ray Burst GRB 051221A and compare the arrival times of photons at different energies with the expected time delay due to a modified dispersion relation. As no time delay was observed, we set a lower bound of 0.0066 E_{pl} \sim 0.66 10^{17} GeV on the scale of Lorentz invariance violation.
description: 9 pages, 2 figures
Hedonic Housing Prices and Agricultural Pollution: An Empirical Investigation on Semiparametric Models
Creators: name: Bontemps, Christophe
name: Simioni, Michel
name: Surry, Yves R.
name: Bontemps, Christophe
name: Simioni, Michel
name: Surry, Yves R.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: hedonic pricing
subject: semiparametric models
subject: agricultural pollution

description: The objective of this paper is to assess the impact on property values of agricultural pollution using alternative semiparametric hedonic price models. The proposed model specifications are made up of two parts: a partially linear component for house characteristics and a non (semi) parametric form to represent the non linear influence of agricultural pollution. A general-to-specific search procedure is adopted to select the best model specification. An application of theses parametric models to rural townships indicates that pollution resulting on livestock operations have a significant nonlinear impact on house prices.
Hopeful Migrations: An Analysis of Narratives of Migrants from the Fukushima Nuclear Disaster
Creators: name: WAKAMATSU, RYOTA
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 441011
subject: Sociology of health

description: This study aims to explain the mechanisms that shape the migration motives of people who emigrated from Japan in the wake of the 2011 Fukushima Nuclear Disaster. The study analysed the narratives of 45 migrants to Australia and other countries drawing on German philosopher Ernst Bloch’s ideas of hope. The results reveal that while demonstrating the motivational aspect of hope, they have imagined the post-disaster world from a long-term perspective and challenged the radioactive contamination and structural problems in Japanese society. This study, therefore, contributes to our understanding of migration in a post-nuclear age.
Finite-time Landauer principle
Creators: name: Proesmans, Karel
name: Ehrich, Jannik
name: Bechhoefer, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the thermodynamic cost associated with the erasure of one bit of information over a finite amount of time. We present a general framework for minimizing the average work required when full control of a system's microstates is possible. In addition to exact numerical results, we find simple bounds proportional to the variance of the microscopic distribution associated with the state of the bit. In the short-time limit, we get a closed expression for the minimum average amount of work needed to erase a bit. The average work associated with the optimal protocol can be up to a factor of four smaller relative to protocols constrained to end in local equilibrium. Assessing prior experimental and numerical results based on heuristic protocols, we find that our bounds often dissipate an order of magnitude less energy.
Decision Support Model for the Optimization of Quality Systems in the Agri-Food Industry
Creators: name: Krieger, Stephanie
name: Schiefer, Gerhard
name: Krieger, Stephanie
name: Schiefer, Gerhard
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: quality management systems
subject: cost
subject: benefit
subject: transaction costs
subject: economic of scales

description: Quality management is of paramount importance in all stages of the Agri-Food production and process chain. The approach of quality management has been changed in the past years due to the effects of globalization, numerous deficits in food safety and the legislative such as the new European regulation 178/2002 concerning food safeties. A trend, which can be shown, is the development of several quality systems and norms in response to this challenge. Therefore programmes will be developed and improved in the Agri-Food-industry further on. There are general quality systems, which are applied in different countries and sectors, country and product specific standards and programmes, which were developed by retail initiatives. This paper will give an insight into the variety of quality standards in the agribusiness and food industry in Europe and beyond. The main aspect will be a cost/benefit analysis for the implementation of different quality systems in firms and supply chains.
Probing the physical conditions and star formation processes in the Galactic HII region S305
Creators: name: Dewangan, L. K.
name: Sharma, Saurabh
name: Pandey, Rakesh
name: del Palacio, S.
name: Ojha, D. K.
name: Benaglia, P.
name: Baug, T.
name: Das, S. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present multi-scale and multi-wavelength observations of the Galactic HII region S305, which is excited by massive O8.5V and O9.5V stars. Infrared images reveal an extended sphere-like shell (extension ~7.5 pc; at T_d = 17.5-27 K) enclosing the S305 HII region (size ~5.5 pc; age ~1.7 Myr). The extended structure observed in the Herschel temperature map indicates that the molecular environment of S305 is heated by the massive O-type stars. Regularly spaced molecular condensations and dust clumps are investigated toward the edges of the infrared shell, where the PAH and H_2 emission is also observed. The molecular line data show a signature of an expanding shell of molecular gas in S305. GMRT 610 and 1280 MHz continuum maps reveal overdensities of the ionized emission distributed around two O-type stars, which are surrounded by the horseshoe envelope (extension ~2.3 pc). A molecular gas deficient region/cavity is identified toward the center of the horseshoe envelope, which is well traced with PAH, H_2, molecular, and dust emission. The edges of the infrared shell are found to be located in the front of the horseshoe envelope. All these outcomes provide the observational evidence of the feedback of O-type stars in S305. Moreover, non-thermal radio emission is detected in S305 with an average spectral index alpha ~-0.45. The variations in alpha, ranging from -1.1 to 1.3, are explained due to soft synchrotron emission and either optically-thicker thermal emission at high frequencies or a suppression of the low-frequency emission by the Razin-Tsytovich effect.
description: 21 pages, 13 figures, Accepted for publication in The Astrophysical Journal
Photometric properties and origin of bulges in SB0 galaxies
Creators: name: Aguerri, J. A. L.
name: Elias-Rosa, N.
name: Corsini, E. M.
name: Muñoz-Tuñón, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have derived the photometric parameters for the structural components of a sample of fourteen SB0 galaxies by applying a parametric photometric decomposition to their observed $I$-band surface brightness distribution. We find that SB0 bulges are similar to bulges of the early-type unbarred spirals, i.e. they have nearly exponential surface brightness profiles ($=1.48\pm0.16$) and their effective radii are strongly coupled to the scale lengths of their surrounding discs ($=0.20\pm0.01$). The photometric analysis alone does not allow us to differentiate SB0 bulges from unbarred S0 ones. However, three sample bulges have disc properties typical of pseudobulges. The bulges of NGC 1308 and NGC 4340 rotate faster than bulges of unbarred galaxies and models of isotropic oblate spheroids with equal ellipticity. The bulge of IC 874 has a velocity dispersion lower than expected from the Faber--Jackson correlation and the fundamental plane of the elliptical galaxies and S0 bulges. The remaining sample bulges are classical bulges, and are kinematically similar to lower-luminosity ellipticals. In particular, they follow the Faber--Jackson correlation, lie on the fundamental plane and those for which stellar kinematics are available rotate as fast as the bulges of unbarred galaxies.
description: 16 pages, 5 figures, accepted for publication in A&A
Natural gravitino dark matter in SO(10) gauge mediated supersymmetry breaking
Creators: name: Lemoine, Martin
name: Moultaka, Gilbert
name: Jedamzik, Karsten
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that gravitinos with mass m_{3/2} ~ 0.1-1 MeV may provide suitable cold dark matter candidates in scenarios of gauge mediated supersymmetry breaking (GMSB) under SO(10) grand unification coupled to supergravity, which accommodate a messenger sector of mass scale M_X ~ 10^6 GeV. This is due to the combined effects of renormalizable loop-suppressed operators and generic non-renormalizable ones governing the dilution of a pre-existing equilibrium gravitino abundance via messenger decay. The above range of gravitino and messenger masses can be accommodated in indirect GMSB scenarios. The gravitino abundance does not depend on the post-inflationary reheat temperature and it is shown that leptogenesis can generate successfully the baryon asymmetry.
description: 8 pages - version to appear in Phys.Lett.B ; discussion of one loop annihilation cross-section modified, conclusions unchanged
СРАВНИТЕЛЬНЫЙ АНАЛИЗ ИНТЕГРАЛЬНЫХ БЕЛКОВЫХ ПАРАМЕТРОВ КРОВИ У БОЛЬНЫХ С ДИАБЕТИЧЕСКИМ СИНДРОМОМ стопы / СРАВНИТЕЛЬНЫЙ АНАЛИЗ ИНТЕГРАЛЬНЫХ БЕЛКОВЫХ ПОКАЗАТЕЛЕЙ КРОВИ У ПАЦИЕНТОВ СИНДРОМ ДИАБЕТИЧЕСКОЙ СТОПЫ
Creators: name: Дмитрий Адамович
Publisher: name: figshare
Year: 2021
Subjects: subject: 110323 Surgery
subject: FOS: Clinical medicine

description: изучить изменение интегральных белковых показателей крови у пациентов с степенью гнойно-некротического отклонения при синдроме диабетической стопы в зависимости от уровня Вагнера .
Did Swift measure GRB prompt emission radii?
Creators: name: Lyutikov, Maxim
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Swift X-Ray Telescope often observes a rapidly decaying X-ray emission stretching to as long as $ t \sim 10^3$ seconds after a conventional prompt phase. This component is most likely due to a prompt emission viewed at large observer angles $θ> 1/Γ$, where $θ\sim 0.1$ is a typical viewing angle of the jet and$Γ\geq 100$ is the Lorentz factor of the flow during the prompt phase. This can be used to estimate the prompt emission radii, $r_{em} \geq 2 t c/θ^2 \sim 6 \times 10^{15}$ cm. These radii are much larger than is assumed within a framework of a fireball model. Such large emission radii can be reconciled with a fast variability, on time scales as short as milliseconds, if the emission is beamed in the bulk outflow frame, e.g. due to a random relativistic motion of ''fundamental emitters''. This may also offer a possible explanation for X-ray flares observed during early afterglows.
description: 9 pages, 2 figure, submitted to MNRAS Letters
Spectral Graph-based Features for Recognition of Handwritten Characters: A Case Study on Handwritten Devanagari Numerals
Creators: name: Bhat, Mohammad Idrees
name: Sharada, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Interpretation of different writing styles, unconstrained cursiveness and relationship between different primitive parts is an essential and challenging task for recognition of handwritten characters. As feature representation is inadequate, appropriate interpretation/description of handwritten characters seems to be a challenging task. Although existing research in handwritten characters is extensive, it still remains a challenge to get the effective representation of characters in feature space. In this paper, we make an attempt to circumvent these problems by proposing an approach that exploits the robust graph representation and spectral graph embedding concept to characterise and effectively represent handwritten characters, taking into account writing styles, cursiveness and relationships. For corroboration of the efficacy of the proposed method, extensive experiments were carried out on the standard handwritten numeral Computer Vision Pattern Recognition, Unit of Indian Statistical Institute Kolkata dataset. The experimental results demonstrate promising findings, which can be used in future studies.
description: 16 pages, 8 figures
ESTUDOS DE TECNOLOGIAS DE BAIXO CUSTO PARA AGRICULTURA
Creators: name: Andrade, E. E. S
name: NASCIMENTO, F. J. M.
Publisher: name: Zenodo
Year: 2024
Subjects: DESAFIOS
CONSCIENTIZAÇÃO
ESTUDOS

description: O resumo simplificado, intitulado "Estudos de Tecnologias de Baixo Custo para Agricultura", foi submetido ao III Congresso Brasileiro Online de Ensino, Pesquisa e Extensão em 2024, organizado pela Sociedade Brasileira de Eventos Científicos (SOBREC). O autor principal, Everson Eduardo da Silva Andrade, cuja referência de citação é "Andrade, E. E. S.", apresentou o trabalho com o objetivo de divulgar conhecimento e incentivar o pensamento científico sobre Estudos de Tecnologias de Baixo Custo para Agricultura. O co-autor, Fernando Jeferson de Macedo Nascimento, contribuiu para a pesquisa, sendo sua referência de citação "Nascimento, F. J. M.". O evento busca conectar a divulgação científica, o ensino e a extensão acadêmica, visando atingir um amplo público interessado nessa temática.
Finding routes in anonymous sensor networks
Creators: name: Dutra, Renato C.
name: Barbosa, Valmir C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.1

description: We consider networks of anonymous sensors and address the problem of constructing routes for the delivery of information from a group of sensors in response to a query by a sink. In order to circumvent the restrictions imposed by anonymity, we rely on using the power level perceived by the sensors in the query from the sink. We introduce a simple distributed algorithm to achieve the building of routes to the sink and evaluate its performance by means of simulations.
Remarks on combinatorial and accessible model categories
Creators: name: Rosický, Jiří
Publisher: name: arXiv
Year: 2020
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: Using full images of accessible functors, we prove some results about combinatorial and accessible model categories. In particular, we give an example of a weak factorization system on a locally presentable category which is not accessible.
description: 8 pages
'Sufficiently serious behaviour'? When should cyberbullying by children be subject to criminal law?
Creators: name: Jones, Stephen Alwyn
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 480401
subject: Criminal law

description: Cyberbullying is a term that is generally understood in the broader community. However, the term lacks a legal meaning. Because of this, there has been a tendency to shoehorn cyberbullying into existing criminal law provisions such as stalking or using communications technology to menace, harass or cause offence. The thesis examines the threshold at which cyberbullying by children is considered ‘sufficiently serious’ to warrant criminalisation and argues for significant reform to ensure that children (and the broader community) better understand the limits placed on bullying behaviour in all of its forms.
How Much "Safety" Is Available under the U.S. Proposal to the WTO?
Creators: name: Babcock, Bruce A.
name: Hart, Chad E.
name: Babcock, Bruce A.
name: Hart, Chad E.
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Relations/Trade
subject: farm safety net
subject: revenue targeting
subject: U.S. farm programs
subject: WTO

description: Critics of the U.S. proposal to the World Trade Organization (WTO) made in October 2005 are correct when they argue that adoption of the proposal would significantly reduce available support under the current farm program structure. Using historical prices and yields from 1980 to 2004, we estimate that loan rates would have to drop by 9 percent and target prices would have to drop by 10 percent in order to meet the proposed aggregate Amber Box and Blue Box limits. While this finding should cheer those who think that reform of U.S. farm programs is long overdue, it alarms those who want to maintain a strong safety net for U.S. agriculture. The dilemma of needing to reform farm programs while maintaining a strong safety net could be resolved by redesigning programs so that they target revenue rather than price. Building on a base of 70 percent Green Box income insurance, a program that provides a crop-specific revenue guarantee equal to 98 percent of the product of the current effective target price and expected county yield would fit into the proposed aggregate Amber and Blue Box limits. Payments would be triggered whenever the product of the season-average price and county average yield fell below this 98 percent revenue guarantee. Adding the proposed crop-specific constraints lowers the coverage level to 95 percent. Moving from programs that target price to ones that target revenue would eliminate the rationale for ad hoc disaster payments. Program payments would automatically arrive whenever significant crop losses or economic losses caused by low prices occurred. Also, much of the need for the complicated mechanism (the Standard Reinsurance Agreement) that transfers most risk of the U.S. crop insurance to the federal government would be eliminated because the federal government would directly assume the risk through farm programs. Changing the focus of federal farm programs from price targeting to revenue targeting would not be easy. Farmers have long relied on price supports and the knowledge that crop losses are often adequately covered by heavily subsidized crop insurance or by ad hoc disaster payments. Farmers and their leaders would only be willing to support a change to revenue targeting if they see that the current system is untenable in an era of tight federal budgets and WTO limits.
Helium recombination spectra as temperature diagnostics for planetary nebulae
Creators: name: Zhang, Y.
name: Liu, X. -W.
name: Liu, Y.
name: Rubin, R. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Electron temperatures derived from the \ion{He}{1} recombination line ratios, designated $T_{\rm e}$(\ion{He}{1}), are presented for 48 planetary nebulae (PNe). We study the effect that temperature fluctuations inside nebulae have on the $T_{\rm e}$(\ion{He}{1}) value. We show that a comparison between $T_{\rm e}$(\ion{He}{1}) and the electron temperature derived from the Balmer jump of the \ion{H}{1} recombination spectrum, designated $T_{\rm e}$(\ion{H}{1}), provides an opportunity to discriminate between the paradigms of a chemically homogeneous plasma with temperature and density variations, and a two-abundance nebular model with hydrogen-deficient material embedded in diffuse gas of a ``normal'' chemical composition (i.e. $\sim$ solar), as the possible causes of the dichotomy between the abundances that are deduced from collisionally excited lines to those deduced from recombination lines. We find that $T_{\rm e}$(\ion{He}{1}) values are significantly lower than $T_{\rm e}$(\ion{H}{1}) values, with an average difference of $=4000$ K. The result is consistent with the expectation of the two-abundance nebular model but is opposite to the prediction of the scenarios of temperature fluctuations and/or density inhomogeneities. From the observed difference between $T_{\rm e}$(\ion{He}{1}) and $T_{\rm e}$(\ion{H}{1}), we estimate that the filling factor ofhydrogen-deficient components has a typical value of $10^{-4}$. In spite of its small mass, the existence of hydrogen-deficient inclusions may potentially have a profound effect in enhancing the intensities of \ion{He}{1} recombination lines and thereby lead to apparently overestimated helium abundances for PNe.
description: 27 pages, 7 figures, accepted for publication in MNRAS
The entropic force between two horizons of charged Gauss-Bonnet Black hole in de Sitter Spacetime
Creators: name: Guo, Xiong-Ying
name: Gao, Ying
name: Li, Huai-Fan
name: Zhao, Ren
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The basic equations of the thermodynamic system give the relationship between the internal energy, entropy and volume of two neighboring equilibrium states. By using the functional relationship between the state parameters in the basic equation, we give the differential equation satisfied by the entropy of spacetime. We can obtain the expression of the entropy by solving the differential equationy. This expression is the sum of entropy corresponding to the two event horizons and the interaction term. The interaction term is a function of the ratio of the locations of the black hole horizon and the cosmological horizon. The entropic force, which is strikingly similar to the Lennard-Jones force between particles, varies with the ratio of the two event horizons. The discovery of this phenomenon makes us realize that the entropic force between the two horizons may be one of the candidates to promote the expansion of the universe.
description: 16 pages,3 figures
FARMER-OWNED BRANDS?
Creators: name: Hayes, Dermot J.
name: Lence, Sergio H.
name: Stoppa, Andrea
name: Hayes, Dermot J.
name: Lence, Sergio H.
name: Stoppa, Andrea
Publisher: name: Unknown
Year: 2003
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: antitrust
subject: brands
subject: farm profitability
subject: farmer-owned brands
subject: origin control
subject: value-added agriculture

description: The paper lays out the economic arguments in favor of the establishment of farmer-owned brands in midwestern agriculture and presents four case studies based on successful efforts in this area in the United States and European Union. The case studies involve Parma Ham, Brunello di Montalcino wine, Vidalia onions, and a third-party verification organization. The studies show that these brands can be profitable for farmers and emphasize the importance of restricting the supply of any successful brand. One of the case studies shows that this type of supply control can conflict with antitrust regulations.
Minimax and adaptive estimation of the Wigner function in quantum homodyne tomography with noisy data
Creators: name: Butucea, Cristina
name: Guţa, Madalin
name: Artiles, Luis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 62G05, 62G20, 81V80 (Primary)

description: We estimate the quantum state of a light beam from results of quantum homodyne measurements performed on identically prepared quantum systems. The state is represented through the Wigner function, a generalized probability density on $\mathbb{R}^2$ which may take negative values and must respect intrinsic positivity constraints imposed by quantum physics. The effect of the losses due to detection inefficiencies, which are always present in a real experiment, is the addition to the tomographic data of independent Gaussian noise. We construct a kernel estimator for the Wigner function, prove that it is minimax efficient for the pointwise risk over a class of infinitely differentiable functions, and implement it for numerical results. We construct adaptive estimators, that is, which do not depend on the smoothness parameters, and prove that in some setups they attain the minimax rates for the corresponding smoothness class.
description: Published at http://dx.doi.org/10.1214/009053606000001488 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
EVOLUÇÃO TECNOLÓGICA NA AGRICULTURA FAMILIAR BRASILEIRA
Creators: name: ANDRADE, E. E. S
name: NASCIMENTO, F. J. M.
Publisher: name: Zenodo
Year: 2024
Subjects: AGRICULTURA
DESENVOLVIMENTO
TECNOLOGIA

description: O resumo simplificado, intitulado "Evolução Tecnológica na Agricultura Familiar Brasileira", foi submetido ao III Congresso Brasileiro Online de Ensino, Pesquisa e Extensão em 2024, organizado pela Sociedade Brasileira de Eventos Científicos (SOBREC). O autor principal, Everson Eduardo da Silva Andrade, cuja referência de citação é "Andrade, E. E. S.", apresentou o trabalho com o objetivo de divulgar conhecimento e incentivar o pensamento científico sobre a Evolução Tecnológica na Agricultura Familiar Brasileira. O co-autor, Fernando Jeferson de Macedo Nascimento, contribuiu para a pesquisa, sendo sua referência de citação "Nascimento, F. J. M.". O evento busca conectar a divulgação científica, o ensino e a extensão acadêmica, visando atingir um amplo público interessado nessa temática.
Theoretical prediction of presupernova neutrinos and their detection
Creators: name: Kato, Chinami
name: Ishidoshiro, Koji
name: Yoshida, Takashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Almost 30 years have passed since the successful detection of supernova neutrinos from SN 1987A. In the last decades, remarkable progress has been made in neutrino detection technique, through which it may be possible to detect neutrinos from a new source, pre-supernova (pre-SN) neutrinos. They are emitted from a massive star prior to core bounce. Because neutrinos escape from the core freely, they carry information about the stellar physics directly. Pre-SN neutrinos may play an important role in verifying our understanding of stellar evolution for massive stars. Observations of pre-SN neutrinos, moreover, may serve as an alarm regarding a supernova explosion a few days in advance if the progenitor is located in our vicinity, enabling us to observe the next galactic supernova. In this review, we summarize the current status of pre-SN neutrino studies from both of the theoretical and observational points of view.
description: 19 pages, 8 figures, Accepted by Annual review of Nuclear and Particle Science
A rapid and dramatic outburst in Blazar 3C 454.3 during May 2005 - Optical and infrared observations with REM and AIT
Creators: name: Fuhrmann, L.
name: Cucchiara, A.
name: Marchili, N.
name: Tosti, G.
name: Nucciarelli, G.
name: Ciprini, S.
name: Molinari, E.
name: Chincarini, G.
name: Zerbi, F. M.
name: Covino, S.
name: Pian, E.
name: Meurs, E.
name: Testa, V.
name: Vitali, F.
name: Antonelli, L. A.
name: Conconi, P.
name: Cutispoto, G.
name: Malaspina, G.
name: Nicastro, L.
name: Palazzi, E.
name: Ward, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The flat-spectrum radio quasar 3C 454.3 is well known to be a highly active and variable source with outbursts occurring across the whole electromagnetic spectrum over the last decades. In spring 2005, 3C 454.3 has been reported to exhibit a strong optical outburst which subsequently triggered multi-frequency observations of the source covering the radio up to gamma-ray bands. Here, we present first results of our near-IR/optical (V, R, I, H band) photometry performed between May 11 and August 5, 2005 with the Rapid Eye Mount (REM) at La Silla in Chile and the Automatic Imaging Telescope (AIT) of the Perugia University Observatory. 3C 454.3 was observed during an exceptional and historical high state with a subsequent decrease in brightness over our 86 days observing period. The continuum spectral behaviour during the flaring and declining phase suggests a synchrotron peak below the near-IR band as well as a geometrical origin of the variations e.g. due to changes in the direction of forward beaming.
description: 5 pages, 3 figures, accepted for publication in A&A Letters
Aspect-based Sentiment Analysis of Scientific Reviews
Creators: name: Chakraborty, Souvic
name: Goyal, Pawan
name: Mukherjee, Animesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Digital Libraries (cs.DL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.5.4; I.2.6; I.5.2; I.5.4; I.5.1

description: Scientific papers are complex and understanding the usefulness of these papers requires prior knowledge. Peer reviews are comments on a paper provided by designated experts on that field and hold a substantial amount of information, not only for the editors and chairs to make the final decision, but also to judge the potential impact of the paper. In this paper, we propose to use aspect-based sentiment analysis of scientific reviews to be able to extract useful information, which correlates well with the accept/reject decision. While working on a dataset of close to 8k reviews from ICLR, one of the top conferences in the field of machine learning, we use an active learning framework to build a training dataset for aspect prediction, which is further used to obtain the aspects and sentiments for the entire dataset. We show that the distribution of aspect-based sentiments obtained from a review is significantly different for accepted and rejected papers. We use the aspect sentiments from these reviews to make an intriguing observation, certain aspects present in a paper and discussed in the review strongly determine the final recommendation. As a second objective, we quantify the extent of disagreement among the reviewers refereeing a paper. We also investigate the extent of disagreement between the reviewers and the chair and find that the inter-reviewer disagreement may have a link to the disagreement with the chair. One of the most interesting observations from this study is that reviews, where the reviewer score and the aspect sentiments extracted from the review text written by the reviewer are consistent, are also more likely to be concurrent with the chair's decision.
description: Accepted in JCDL'20
Late glacial ice margin fluctuations (~12.5-10.0 ¹⁴C KYR BP) in the Fraser lowland and adjacent Nooksack Valley, southwestern British Columbia, Canada and northwestern Washington, U.S.A.
Creators: name: Kovanen, Doris J.
Publisher: name: University of British Columbia
Year: 2009

description: The last glacial/non-glacial transition has important implications for understanding how abrupt climate changes were transmitted throughout the Northern Hemisphere. The Younger Dryas cold period, for example, is believed to be linked to a reorganization of the thermohaline circulation in the North Atlantic Ocean. The late Wisconsin deglaciation of the Fraser Lowland (3500 km²) in southwestern British Columbia and northwestern Washington was reconstructed from multiple lines of evidence. Traditional mapping and field techniques were integrated with computer-generated digital images to visualize morphologic features. New terminal positions are recognized associated with fluctuations of a piedmont ice lobe that occupied the central Fraser Lowland during the late stages of the Fraser Glaciation. The start of deglaciation is recorded by glaciomarine and glaciofluvial sediments of the Fort Langley Formation (Everson Interstade). Marine shells from stony mud range in age from c. 12,500 to 11,400 ¹⁴C yr BP. Multiple ice readvances of the Sumas Stade, after c. 11,600 ¹⁴C yr BP deposited moraines, outwash, and ice contact sediments in the Fraser Loland and adjacent valleys. Between c. 10,900 and 10,250 ¹⁴C yr BP, ice retreated an unknown distance and readvanced again, constructing moraines near the towns of Mission and Sumas. These ice fluctuations are bracketed by more than 70 radiocarbon dates, but the analytical uncertainties of c. ± 45-200 ¹⁴C yr BP indicate that more accurate dating of these rapid fluctuations will be difficult to achieve. However, constraining information provided at key localities by morphology, stratigraphy, and radiocarbon dating gives confidence in the broad evolving pattern proposed. A review of present-day glacier fluctuations on Mt. Baker (3285 m), 50 km southeast of the Fraser Lowland, indicates a linkage between alpine glaciers and Pacific Decadal Oscillation of sea surface temperatures. This link highlights the sensitivity and response of the glaciers to changes in the oceanic-atmospheric system. The emerging picture is that the glacier fluctuations in the Fraser Lowland and adjacent valleys may have responded to regional late-glacial climate oscillations similar to those of the North Atlantic and northeast Pacific, including the Allerad, Younger Dryas, Holocene transition.
Extremal single-charge small black holes: Entropy function analysis
Creators: name: Sinha, Aninda
name: Suryanarayana, Nemani V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study stretched horizons of the type AdS_2 x S^8 for certain spherically symmetric extremal small black holes in type IIA carrying only D0-brane charge making use of Sen's entropy function formalism for higher derivative gravity. A scaling argument is given to show that the entropy of this class of black holes for large charge behaves as \sqrt{|q|} where q is the electric charge. The leading order result arises from IIA string loop corrections. We find that for solutions to exist the force on a probe D0-brane has to vanish and we prove that this feature persists to all higher derivative orders. We comment on the nature of the extremum of these solutions and on the sub-leading corrections to the entropy. The entropy of other small black holes related by dualities to our case is also discussed.
description: 19 pages, v2:typos corrected and references added
Family of solvable generalized random-matrix ensembles with unitary symmetry
Creators: name: Muttalib, K. A.
name: Klauder, J. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We construct a very general family of characteristic functions describing Random Matrix Ensembles (RME) having a global unitary invariance, and containing an arbitrary, one-variable probability measure which we characterize by a `spread function'. Various choices of the spread function lead to a variety of possible generalized RMEs, which show deviations from the well-known Gaussian RME originally proposed by Wigner. We obtain the correlation functions of such generalized ensembles exactly, and show examples of how particular choices of the spread function can describe ensembles with arbitrary eigenvalue densities as well as critical ensembles with multifractality.
description: 4 pages, to be published in Phys. Rev. E, Rapid Comm
Exclusive production of pentaquarks in the scaling regime
Creators: name: Diehl, M.
name: Pire, B.
name: Szymanowski, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate two exclusive reactions with a Theta+ pentaquark in the final state: electroproduction of a K meson on the nucleon, and K+ scattering on a neutron target producing a lepton pair. These reactions offer unique opportunities to investigate the structure of pentaquark baryons at parton level. We discuss the generalized parton distributions for the N --> Theta+ transition and give the leading order amplitude for these processes in the Bjorken regime.
description: 5 pages in LATEX, 1 .eps figure, talk at the Baryons04 Conference, October 25-29, 2004, Palaiseau, France
Suppression of the Richtmyer-Meshkov Instability due to a Density Transition Layer at the Interface
Creators: name: Sano, Takayoshi
name: Ishigure, Kazuki
name: Cobos-Campos, Fransisco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have investigated the effects of a smooth transition layer at the contact discontinuity on the growth of the Richtmyer-Meshkov instability (RMI) by hydrodynamic numerical simulations and derived an empirical condition for the suppression of the instability. The transition layer has little influence on the RMI when the thickness $L$ is narrower than the wavelength of an interface modulation $λ$. However, if the transition layer becomes broader than $λ$, the perturbed velocity associated with the RMI is reduced considerably. The suppression condition is interpreted as the cases that the shock transit time through the transition layer is longer than the sound crossing time of the modulation wavelength. The fluctuation kinetic energy decreases as $L^{-p}$ with $p = 2.5$, which indicates that the growth velocity of the RMI decreases in proportion to $L^{-p/2}$ by the presence of the transition layer. This feature is found to be quite universal and appeared in a wide range of shock-interface interactions.
description: 11 pages, 8 figures, 1 table, accepted for publication in PRE
Weighing the young stellar discs around Sgr A*
Creators: name: Nayakshin, Sergei
name: Dehnen, Walter
name: Cuadra, Jorge
name: Genzel, Reinhard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is believed that young massive stars orbiting Sgr A* in two stellar discs on scales of 0.1-0.2 parsecs were formed either farther out in the Galaxy and then quickly migrated inward, or in situ in a massive self-gravitating disc. Comparing N-body evolution of stellar orbits with observational constraints, we set upper limits on the masses of the two stellar systems. These masses turn out to be few times lower than the expected total stellar mass estimated from the observed young high-mass stellar population and the standard galactic IMF. If these stars were formed in situ, in a massive self-gravitating disc, our results suggest that the formation of low-mass stars was suppressed by a factor of at least a few, requiring a top-heavy initial mass function (IMF) for stars formed near sgr A*.
description: accepted to MNRAS. 6 pages, 5 figures
Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars
Creators: name: Richards, Gordon T.
name: Lacy, Mark
name: Storrie-Lombardi, Lisa J.
name: Hall, Patrick B.
name: Gallagher, S. C.
name: Hines, Dean C.
name: Fan, Xiaohui
name: Papovich, Casey
name: Berk, Daniel E. Vanden
name: Trammell, George B.
name: Schneider, Donald P.
name: Vestergaard, Marianne
name: York, Donald G.
name: Jester, Sebastian
name: Anderson, Scott F.
name: Budavari, Tamas
name: Szalay, Alexander S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of the mid-infrared (MIR) and optical properties of type 1 (broad-line) quasars detected by the Spitzer Space Telescope. The MIR color-redshift relation is characterized to z=3, with predictions to z=7. We demonstrate how combining MIR and optical colors can yield even more efficient selection of active galactic nuclei (AGN) than MIR or optical colors alone. Composite spectral energy distributions (SEDs) are constructed for 259 quasars with both Sloan Digital Sky Survey and Spitzer photometry, supplemented by near-IR, GALEX, VLA and ROSAT data where available. We discuss how the spectral diversity of quasars influences the determination of bolometric luminosities and accretion rates; assuming the mean SED can lead to errors as large as a factor of 2 for individual quasars. Finally, we show that careful consideration of the shape of the mean quasar SED and its redshift dependence leads to a lower estimate of the fraction of reddened/obscured AGNs missed by optical surveys as compared to estimates derived from a single mean MIR to optical flux ratio.
description: 52 pages, 24 figures (12 color), 3 tables, ApJS accepted; higher resolution accepted version available at ftp://ftp.astro.princeton.edu/gtr/flsqsos/May2506/
Kardinal Bea, Augustin, Die Einheit der Christen
Creators: name: Schweigart, Hans Günther
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 13 Nr. 3 (1964): Ökumenische Rundschau, Band 13, Heft 3
The Long-Run Impact of Corn-Based Ethanol on the Grain, Oilseed, and Livestock Sectors: A Preliminary Assessment
Creators: name: Elobeid, Amani E.
name: Tokgoz, Simla
name: Hayes, Dermot J.
name: Babcock, Bruce A.
name: Hart, Chad E.
name: Elobeid, Amani E.
name: Tokgoz, Simla
name: Hayes, Dermot J.
name: Babcock, Bruce A.
name: Hart, Chad E.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: biofuels
subject: commodity markets
subject: corn price
subject: energy markets
subject: ethanol

description: The ongoing growth of corn-based ethanol production raises some fundamental questions about what impact continued growth will have on U.S. and world agriculture. Estimates of the long-run potential for ethanol production can be made by calculating the corn price at which the incentive to expand ethanol production disappears. Under current ethanol tax policy, if the prices of crude oil, natural gas, and distillers grains stay at current levels, then the break-even corn price is $4.05 per bushel. A multi-commodity, multi-country system of integrated commodity models is used to estimate the impacts if we ever get to $4.05 corn. At this price, corn-based ethanol production would reach 31.5 billion gallons per year, or about 20% of projected U.S. fuel consumption in 2015. Supporting this level of production would require 95.6 million acres of corn to be planted. Total corn production would be approximately 15.6 billion bushels, compared to 11.0 billion bushels today. Most of the additional corn acres come from reduced soybean acreage. Wheat acreage would expand because of higher prices and increased demand for feed wheat. Corn exports and production of pork and poultry would all be reduced in response to higher corn prices and increased utilization of corn by ethanol plants. These results should not be viewed as a prediction of what will eventually materialize. Rather, they indicate a logical end point to the current incentives to invest in corn-based ethanol plants.
description: Replaced with revised version of paper 11/17/06.
Petrology and tectonic setting of felsic and mafic volcanic and intrusive rocks in the Finlayson Lake volcanic-hosted massive sulphide (VHMS) district, Yukon, Canada : a record of mid-Paleozoic arc and back-arc magmatism and metallogeny
Creators: name: Piercey, Stephen John
Publisher: name: University of British Columbia
Year: 2009

description: The Yukon-Tanana Terrane (YTT) in the Finlayson Lake region (FLR), southeastern Yukon, Canada is host to five volcanic-hosted massive sulphide (VHMS) deposits (total -34 Mt) that have been discovered since the mid-1990's. In this thesis, field, lithogeochemical and Nd isotopic data are presented for felsic and mafic igneous rocks in the FLR to understand the tectonic setting, style of magmatism, and their relationships to VHMS mineralization. All rocks in the FLR were built upon a continental (or continent-derived) substrate of pre-Mississippian (>365 Ma) age. The Fire Lake unit (FLU) reflects Devonian-Mississippian (-365-360 Ma) arc and back-arc magmatism built upon a composite basement of oceanic and continental (or continent-derived) crust above an east-dipping subduction zone. Models proposed herein for the magmatic and tectonic evolution of FLU include: 1) arc magmatism punctuated by back-arc basin generation; 2) ridge propagation into an evolving arc with subsequent evolution to back-arc magmatism; and/or 3) ridge-subduction (slab-window) with eventual back-arc basin magmatism. The Kudz Ze Kayah (KZK) unit overlies the FLU and consists predominantly of crustally derived Devonian-Mississippian (-360-356 Ma) felsic volcanic and high-level subvolcanic rocks and variably carbonaceous sedimentary rocks; the latter are crosscut and overlain by alkalic mafic rocks. The high field strength element (HFSE)-enriched (A-type) felsic rocks and alkalic mafic rocks in the KZK unit are inferred to represent magmatism within an ensialic back-arc basin upon evolved crust. The Wolverine succession (WS) unconformably overlies the KZK unit and consists of a lower succession of felsic volcanic and subvolcanic rocks with carbonaceous sedimentary rocks; the upper portion of the succession, above the Wolverine VHMS deposit, consists predominantly of aphyric rhyolitic rocks that are overlain basalt flows. Felsic rocks ofthe WS are broadly similar to those in the KZK unit and represent ensialic back-arc basin magmatism. However, the succession is younger (-356-346 Ma), and post-dates a period of uplift, deformation, and erosion prior to commencement of back-arc magmatism. Back-arc spreading eventually evolved to true seafloor spreading within the WS. Massive sulphide deposits in the FLR are preferentially associated with rocks indicative of high temperature magmatism (e.g., boninites, A-type felsic rocks) and extensional tectonic activity (e.g., back-arc rifting and spreading).