cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synthetic Spectral Analysis of the Hot Component in the S-Type Symbiotic Variable EG Andromeda
Creators: name: Kolb, K.
name: Miller, J.
name: Sion, E. M.
name: Mikolajewska, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have applied grids of NLTE high gravity model atmospheres and optically thick accretion disk models for the first time to archival IUE and FUSE spectra of the S-type symbiotic variable EG And taken at superior spectroscopic conjunction when Rayleigh scattering should be minimal and the hot component is viewed in front of the red giant. For EG And's widely accepted, published hot component mass, orbital inclination and distance from the Hipparcos parallax, we find that hot, high gravity, NLTE photosphere model fits to the IUE spectra yield distances from the best-fitting models which agree with the Hipparcos parallax distance but at temperatures substantially lower than the modified Zanstra temperatures. NLTE fits to an archival FUSE spectrum taken at the same orbital phase as the IUE spectra yield the same temperature as the IUE temperature (50,000K). However, for the same hot component mass, inclination and parallax-derived distance, accretion disk models at moderately high inclinations, $\sim 60-75^{\circ}$ with accretion rates $\dot{M} = 1\times 10^{-8}$ to $1\times 10^{-9} M_{\sun}/yr$ for white dwarf masses $M_{wd} = 0.4 M_{\sun}$ yield distances grossly smaller than the distance from the Hipparcos parallax. Therefore, we rule out an accretion disk as the dominant source of the FUV flux. Our findings support a hot bare white dwarf as the dominant source of FUV flux.
description: AJ, Oct. 2004
Distributed algorithms for covering, packing and maximum weighted matching
Creators: name: Koufogiannakis, Christos
name: Young, Neal E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: C.2.4; G.1.6
subject: 90C26, 68W15

description: This paper gives poly-logarithmic-round, distributed D-approximation algorithms for covering problems with submodular cost and monotone covering constraints (Submodular-cost Covering). The approximation ratio D is the maximum number of variables in any constraint. Special cases include Covering Mixed Integer Linear Programs (CMIP), and Weighted Vertex Cover (with D=2). Via duality, the paper also gives poly-logarithmic-round, distributed D-approximation algorithms for Fractional Packing linear programs (where D is the maximum number of constraints in which any variable occurs), and for Max Weighted c-Matching in hypergraphs (where D is the maximum size of any of the hyperedges; for graphs D=2). The paper also gives parallel (RNC) 2-approximation algorithms for CMIP with two variables per constraint and Weighted Vertex Cover. The algorithms are randomized. All of the approximation ratios exactly match those of comparable centralized algorithms.
Salmonella spp. serovars isolated from healthy Leopard geckos (Eublepharis macularius) in Lisbon, Portugal
Creators: name: Campana, Sara
name: Fernandes, Gonçalo
name: Patrício, Rui
name: Alves, Margarida
name: Lecis, Roberta
name: Ropio, Joana
name: Valença, Andreia
name: Pereira, André
name: Silveira, Leonor
name: Pista, Ângela
name: Gomes, João Paulo
name: Nunes, Alexandra
name: Belas, Adriana
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2024

description: Objectives: This study aims to evaluate the frequency of Salmonella spp. in cloacal and oral cavity samples from healthy Leopard geckos, serovars identification, and phenotypic characterization.


Material and Methods: For 3 months cloacal and oral cavity samples were collected from healthy Leopard geckos. Presumptive Salmonella spp. colonies on IRIS Salmonella® agar were isolated and confirmed by PCR amplification of the invA gene. Serotyping was performed according to White-Kauffmann-Le Minor scheme. In all Salmonella spp. isolates susceptibility to 16 antimicrobials was studied by the disk diffusion method and interpreted according to the EUCAST and CLSI criteria. Extended-spectrum beta-lactamase (ESBL) producing Salmonella spp. screening was performed in all isolates by the double-disk synergy test and the results were interpreted according to the EUCAST guidelines.


Results: Twenty of the 33 (60.6%) animals sampled tested positive for Salmonella spp. Regarding the cloacal and the oral cavity samples studied 85.0% (17/20) and 30% (6/20), respectively, were positive for Salmonella spp. In cloacal samples seven serovars were recovered: Salmonella enterica salamae ser. 16:m,t:- (n=6), Salmonella enterica enterica ser. Fluntern (n=5), Salmonella enterica enterica ser. Typhimurium (n=2), Salmonella enterica enterica ser. Senftenberg/Dessau (n=1), Salmonella enterica salamae ser. 30:l,z28:z6 (n=2), Salmonella enterica enterica ser. Tennessee (n=1). Regarding oral cavity the most frequent were Salmonella enterica salamae ser. 16:m,t:- (n=3), followed by Salmonella enterica enterica ser. Fluntern (n=1), Salmonella enterica enterica ser. Adelaide (n=1) Salmonella enterica enterica ser. Tennessee (n=1). In this study MDR bacteria, such as ESBL/AmpC, and carbapenemase-producing Salmonella spp. were not detected. Most of the isolates were susceptible to all the antimicrobials studied.


Conclusion: In this study serovars with high zoonotic potential were identified, such Tennessee and Typhimurium. More research on the role of these exotic pets in the spread of this pathogens is needed, for a One Health approach to fight the dissemination of zoonotic Salmonella.


 


Keywords: Leopard geckos; Pets; Salmonella spp.; Antimicrobials; One-health.


 


Funding: This work is part of the strategic project Detection of pathogens in the oral and fecal flora of healthy leopard geckos (Eublepharis macularius)”, funded by FMV-ULHT in 2022-2023.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 15 (2024): II Encontro de Investigação da FMV da Universidade Lusófona- Edição Especial
On Coordinate Transformations in Planar Noncommutative Theories
Creators: name: Correa, D. H.
name: Fosco, C. D.
name: Schaposnik, F. A.
name: Torroba, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider planar noncommutative theories such that the coordinates verify a space-dependent commutation relation. We show that, in some special cases, new coordinates may be introduced that have a constant commutator, and as a consequence the construction of Field Theory models may be carried out by an application of the standard Moyal approach in terms of the new coordinates. We apply these ideas to the concrete example of a noncommutative plane with a curved interface. We also show how to extend this method to more general situations.
description: 20 pages, 1 figure. references added
KAM Theory in a Nutshell
Creators: name: Garrido, Víctor José García
Publisher: name: figshare
Year: 2020
Subjects: subject: 10204 Dynamical Systems in Applications
subject: FOS: Mathematics
subject: 10109 Ordinary Differential Equations, Difference Equations and Dynamical Systems

description: These notes (still in progress) provide a basic introduction to the mathematical ideas behind the foundations of KAM theory, one of the biggest achievements in the field of Nonlinear Dynamical Systems that is concerned with the analysis of the persistence of quasiperiodic motion in nearly-integrable Hamiltonian systems.
Informational Coherence as an Alternative to Dark Matter in the Hercules-Corona Borealis Great Wall
Creators: name: Matuchaki
Publisher: name: Zenodo
Year: 2025

description: Title: Informational Coherence as an Alternative to Dark Matter in the Hercules-Corona Borealis Great Wall

Abstract:This study explores the Hercules-Corona Borealis Great Wall (HCBGW) through the lens of the Unified Informational Spin Theory (UIST), proposing an alternative to the conventional dark matter paradigm. The research demonstrates that informational coherence fields can explain large-scale cosmic structures without the need for unseen mass components. By analyzing gamma-ray burst (GRB) clustering and employing advanced computational simulations, we show that coherence fields provide the necessary stability for cosmic formations.

A comparative analysis between the UIST and the Λ\LambdaΛCDM model reveals that gravitational effects attributed to dark matter can be replicated by informational coherence. Statistical methods such as nearest-neighbor clustering and the Kolmogorov-Smirnov 2D test confirm that the GRB distribution within HCBGW follows structured patterns, aligning with the predictions of the UIST framework. Monte Carlo simulations further illustrate that coherence-based structures emerge naturally under specific informational constraints.

A key contribution of this study is the differentiation between Coherence Fields—which govern gravitational interactions in space-time—and Informational Coherence, the underlying principle that dictates the self-organization of matter and energy. This distinction enhances the theoretical foundation of the UIST and its applicability to cosmic structure formation.

Future research should focus on observational tests to validate coherence fields, including gravitational lensing anomalies, deviations in galactic rotation curves, and potential evidence from the Cosmic Microwave Background (CMB). The study also discusses how upcoming telescopes like the James Webb Space Telescope (JWST) and the Vera C. Rubin Observatory could provide critical data to support the UIST model.

By proposing an informational approach to gravity, this research challenges the necessity of dark matter and lays the groundwork for a paradigm shift in modern cosmology.
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type
Creators: name: Croton, Darren J.
name: Farrar, Glennys R.
name: Norberg, Peder
name: Colless, Matthew
name: Peacock, John A.
name: Baldry, I. K.
name: Baugh, C. M.
name: Bland-Hawthorn, J.
name: Bridges, T.
name: Cannon, R.
name: Cole, S.
name: Collins, C.
name: Couch, W.
name: Dalton, G.
name: De Propris, R.
name: Driver, S. P.
name: Efstathiou, G.
name: Ellis, R. S.
name: Frenk, C. S.
name: Glazebrook, K.
name: Jackson, C.
name: Lahav, O.
name: Lewis, I.
name: Lumsden, S.
name: Maddox, S.
name: Madgwick, D.
name: Peterson, B. A.
name: Sutherland, W.
name: Taylor, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radius 8h-1Mpc, and on spectral type, determined from principal component analysis. We find that the galaxy populations at both extremes of density differ significantly from that at the mean density. The population in voids is dominated by late types and shows, relative to the mean, a deficit of galaxies that becomes increasingly pronounced at magnitudes brighter than M_bJ-5log10h
description: 14 pages, 12 figures, accepted MNRAS
The view from the bench : coaches’ perceptions of homonegativity in high school girls’ sports
Creators: name: Longpre, Simone
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines how and why homonegativity is manifested in girls' and women's organized, school-based sports. It questions the relationship between the social construction of gender, lesbian and non-heterosexual identity, and the regulation of girls in sports through traditional understandings of gender and sexuality. Of specific interest in this investigation, are the high school coaches of female athletes, their understanding and interpretation of these concepts, and how their beliefs are manifested in their coaching practice. Interviews were conducted with 5 coaches who teach and coach in high schools in the Vancouver School District. The stories of the participants weave a textured account of the relationship between sport, female athletes, coaching and the education system. Their discussions revealed the complexity of the relationship between coach and athlete, how homonegativity is interpreted and challenged in the broader education system, and the position and functioning of school athletics within that system. In addition, the coach's level of awareness and knowledge surrounding issues of oppression and discrimination, along with their personal experience as an athlete, teacher and coach, all contributed to, and informed their coaching practice. While some of the coaches in this study acknowledged or recognized gendered, sexist, heterosexist and homonegative attitudes and behaviors among the students, athletes and teachers in their schools, a number of them did not. It became apparent that homonegativity remains a deeply entrenched systemic problem in the school system. This was further evidenced by the fact that many of the study participants did not possess the knowledge, skills or language necessary to articulate, deconstruct and unveil homonegative behavior as systemic discrimination of non-heterosexuals. As a result subtle and subversive forms of homonegativity went unchallenged and uninterrupted. Those who were making efforts to educate students and athletes regarding homonegativity in sport were functioning in isolation, and had little support or resources to call on to unravel and combat sexual orientation bias.
Machine Learning for Achieving Bose-Einstein Condensation of Thulium Atoms
Creators: name: Davletov, E. T.
name: Tsyganok, V. V.
name: Khlebnikov, V. A.
name: Pershin, D. A.
name: Shaykin, D. V.
name: Akimov, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Bose-Einstein condensation (BEC) is a powerful tool for a wide range of research activities, a large fraction of which are related to quantum simulations. Various problems may benefit from different atomic species, but cooling down novel species interesting for quantum simulations to BEC temperatures requires a substantial amount of optimization and is usually considered as a hard experimental task. In this work, we implemented the Bayesian machine learning technique to optimize the evaporative cooling of thulium atoms and achieved BEC in an optical dipole trap operating near 532 nm. The developed approach could be used to cool down other novel atomic species to quantum degeneracy without additional studies of their properties.
title: Numerical investigation of the flow in a cylinder with a rotating lid
Creators: name: Riedl, Michael
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Zylinderströmung
subject: rotierende Scheibe
subject: flow in a cylinder
subject: rotating lid

description: Die hier untersuchte Bewegung eines Fluids in einem zylindrischen Tank, die durch die axisymmetrische Rotation des oberen Deckels initiiert wird, ist ein etabliertes Benchmark-Problem in numerischen Strömungssimulationen (Computational Fluid Dynamics). Ungeachtet der simplen Geometrie existieren innerhalb des Systemes eine Variation von bemerkenswerter, fluiddynamischer Phänomene. Im Rahmen dieser Arbeit simulieren wir das Auftreten bereits aus der Literatur bekannten, fluiddynamischen Strukturen unter Verwendung des spektralen Element Lösers Nek5000. Wir zeigen für das Auftreten des Vortex - Zusammenbruchs eine Übereinstimmung von Simulationsergebnissen mit experimentellen Messungen für Variation aus unterschiedlichen Reynolds Zahlen und Querschnittsverhältnissen. Für den erwähnten Bereich weisen wir darüber hinaus das Auftreten von Wanderwellen nach. Um die Strömung weiter zu beschreiben, wenden wir Poincaré Schnitte auf berechnete Stromlinien an. Wobei wir die Sensitivität der berechneten Strukturen auf künstlich konstruierte Störungen untersuchen. Daraus resultierende Ergebnisse weisen darauf hin, dass selbst bei Auftreten von idealen oder gestörten Wanderwellen die primär auftretende Wirbelbewegung des Flusses dominierend regulierend wirken. Des Weiteren konnte gezeigt werden, dass das System eine komplexe Topologie der Stromlinien aufweist, worin zwei Sattelfoci durch eine entartete heteroclinische Verbindung miteinander verbunden sind.
description: The concerned motion of fluid within a cylindrical tank driven by the axisymmetrical rotation of the top lid is a well established benchmark problem for computational fluid dynamics. Yet, regardless of the simplicity of its geometry, it exhibits a variety of remarkable fluid dynamical phenomena. Applying the spectral element solver Nek5000, we simulate fluid dynamical structures reported in literature. An agreement of computational results with experimental measurements has been shown for vortex breakdowns, the onset of which we determine for a variety of Reynolds numbers and aspect ratios. For mentioned range we furthermore show the onset of traveling waves. We compute the streamlines in combination with Poincaré sections to study the flow even further by determining the sensitivity of these structures to artificial constructed perturbations. Results suggest that the primary swirling motion of the flow dominates rendering the streamlines of the flow regular even when ideal or perturbed travelling waves occur. Also the system exhibits a complex streamline topology, wherein two saddle foci are connected via a degenerate heteroclinic connection.
Effective Operator Treatment of the Lipkin Model
Creators: name: Abraham, K. J.
name: Vary, J. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the Lipkin Model using effective operator techniques. We present both analytical and numerical results for effective Hamiltonians. The accuracy of the cluster approximation is investigated.
description: To appear in Phys.Rev.C
Avaliação da microbiota bacteriana do útero em cadelas clinicamente saudáveis.
Creators: name: Palha, Gonçalo
name: Belas, Adriana
name: Fonseca, Joana
name: Catarino, José
name: Alves, Margarida
name: Amaral, Ana
name: Borges, Paulo
name: Serafim, Michelle
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2024

description: Objetivos: A infeção uterina bacteriana origina diferentes desfechos clínicos na cadela. Este estudo pretende avaliar a frequência e a caracterização fenotípica da microbiota no útero de cadelas clinicamente saudáveis submetidas a ovariohisterectomia (OVH) ou ovariectomia (OVE).


Materiais e Métodos: Até à data, foram incluídas 12 cadelas no estudo, entre as quais 2 animais foram submetidos a OVH e 10 a OVE.  Para cultura bacteriana foram obtidas amostras de duas formas por histeroscopia, antes do procedimento de OVH ou OVE: 1) lavagem uterina com lactato de ringer estéril; 2) biópsia de tecido uterino. O isolamento bacteriano foi realizado por métodos microbiológicos padrão. Nos isolados obtidos foi realizada a suscetibilidade a antibióticos pelo método de difusão de disco e interpretado de acordo com os critérios CLSI.


Resultados: Entre os animais avaliados (n=12), em 66,6 % (n=8/12) foram obtidos resultados positivos para a presença de bactérias Gram-positivas (n=7) e Gram-negativas (n=4). Em dois dos animais foram detetados ambos os grupos de bactérias.  Os agentes bacterianos identificados foram: Staphylococcus spp. (n=2), Enterococcus spp (n=7), Escherichia coli (n=1), Klebsiella spp. (n=3) e Serratia marcescens (n=1). Todos os isolados de Klebsiella spp. apresentaram resistência as cefalosporinas de 3ª geração e perfil de multiresistência (MDR). Em um dos isolados de Staphylococcus spp. foi detetada apenas resistência às tetraciclinas. Em 4 dos isolados de Enterococcus spp. foi detetada resistência às fluoroquinolonas, sendo que a enrofloxacina foi o antibiótico para o qual foi detetado o maior número de isolados resistentes.   


Conclusão: Com estes resultados preliminares conclui-se que existem animais que se encontram colonizados com bactérias multirresistentes, o que poderá ter implicações na antibioterapia durante a abordagem do tratamento da infertilidade em cadelas com interesse reprodutivo.


 


Palavras-Chave: Microbiota bacteriana; Cadelas; Resistências; Antibióticos.


Financiamento: Este trabalho insere-se no projeto exploratório “Prevalence of dog endometritis in Portugal” financiado pela FMV-ULHT em 2022-2023.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 15 (2024): II Encontro de Investigação da FMV da Universidade Lusófona- Edição Especial
Reactor scheme, testing and leaching data from The direct synthesis of hydrogen peroxide from H2 and O2 using Pd–Ni/TiO2 catalysts
Creators: name: Crole, David A.
name: Ricci Underhill
name: Edwards, Jennifer K.
name: Shaw, Greg
name: Freakley, Simon J.
name: Hutchings, Graham J.
name: Lewis, Richard J.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 30203 Inorganic Green Chemistry
subject: FOS: Chemical sciences
subject: 30504 Organic Green Chemistry

description: The direct synthesis of hydrogen peroxide (H2O2) from molecular H2 and O2 offers an attractive solution to decentralized production compared to the anthraquinone process. Herein we evaluate the performance of a 0.5%Pd–4.5%Ni/TiO2 catalyst in batch and flow reactor systems using water as a solvent at ambient temperature. These reaction conditions are considered challenging for the synthesis of high H2O2 concentrations, with the use of sub-ambient temperatures and alcohol co-solvents typical. Catalyst activity was observed to be stable to prolonged use in multiple batch experiments or in a flow system, with selectivities towards H2O2 of 97% and 85%, respectively. This study was carried out in the absence of halide or acid additives that are typically used to inhibit sequential H2O2 degradation reactions showing that this Pd–Ni catalyst has the potential to produce H2O2 selectively.This article is part of the discussion meeting issue ‘Science to Enable the Circular Economy’.
L'effet du travail hors-ferme sur l'efficacité technique des fermes laitières québécoises: un modèle intégrant les biais de sélection sur les observables et inobservables
Creators: name: Begin, Rosemarie
name: Tamini, Lota D.
name: Doyon, Maurice
name: Begin, Rosemarie
name: Tamini, Lota D.
name: Doyon, Maurice
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Cost function
subject: stochastic frontier analysis
subject: technical efficiency
subject: selection on observables
subject: selection on unobservables

description: This article focuses on the effect of off-farm work on technical efficiency of a sample of dairy farms in Quebec. The analyzes are based on the estimation of a stochastic model of cost function We hypothesize that producers working outside and those working only on the farm have different observable and unobservable characteristics resulting in a selection bias that must be taken into account. Our results confirm the presence of selection bias. Also, empirical results show that participation in non-farm work exerts a negative and statistically significant effect on technical efficiency of dairy farms. Without correction for selection bias the efficiency scores between the 2 groups are not statistically different.
Increase of cervical cancer incidence in Sweden in relation to screening history: population cohort study
Creators: name: Jiangrong Wang
name: Andrae, Bengt
name: Strander, Björn
name: Sparén, Pär
name: Dillner, Joakim
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Hematology
subject: Computational Biology

description: Background: Cervical cancer incidence in Sweden decreased from 24/100,000 in 1965 to 8/100,000 in 2011, but has from 2014 increased to 11/100,000. The increase appears to correlate to screening history. We perform a study of the cancer risk change in relation to screening history over two screening rounds to verify the correlation. Material and methods: We studied the cohorts of all 3,047,850 individual women living in Sweden in each year from 2002–2015. Registry linkages between the Total Population Register, the Swedish National Cervical Screening Registry, the Swedish Cervical Cancer Audit database and the National Quality Register for Gynecological Cancer, defined the incidence rates of invasive cervical cancer comparing time periods 2002–2013 to 2014–2015, in women whose screening history in 2 screening intervals prior to each year were either (i) adequately screened with normal results (almost exclusively cytology, 52% of the population) or (ii) unscreened (13% of the population). We also investigated the incidence increase by time since a normal smear performed in 2002–2012. Results: Among women adequately screened with normal results there was a strong incidence increase in 2014–2015 compared to previous years (Incidence rate ratio (IRR) = 1.59, 95%CI = 1.36–1.85), but no significant increase among unscreened women (IRR = 1.09, 95%CI = 0.94–1.27). There was no increase in incidence 0–2.5 years after a normal smear over the study period (IRR = 1.04, 95% CI = 0.88–1.24), but a strong increase 3–4 years after a normal smear since year 2009 (IRR = 1.52, 95% CI = 1.25–1.84). Conclusion: The results suggest that the overall increase is associated with an increased cancer risk in women adequately screened with normal cytological results. Possibly, precursor lesions missed in one screening round might result in detection of early stage invasive cancer in the subsequent screening.
Efficiences technique et environnementale en agriculture: le cas du bassin de la rivière Chaudière au Québec
Creators: name: Ndegue Fongue, M.K.
name: Ndegue Fongue, M.K.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Distance function
subject: Stochastic frontier analysis
subject: Technical efficiency
subject: Environmental efficiency.

description: Despite the imposition of various environmental regulations in Quebec, the impact of agriculture on water quality remains a concern particularly in the Chaudière-Appalaches. This area is intensive in animal and crop productions leading to excess phosphorus, nitrogen and sediment runoff. This study aims to analyze the technical efficiency and environmental efficiency for agricultural producers in the basin of the Chaudière River located at the south of Quebec City. We adopt a parametric approach applied to stochastic distance functions. The data cover 210 farms and our results show that there is a strong correlation between the two efficiencies. Moreover, as shown in other studies, environmental performance leads to additional costs at the farm.
Dynamics of an ion chain in a harmonic potential
Creators: name: Morigi, Giovanna
name: Fishman, Shmuel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold ions in anisotropic harmonic potentials can form ion chains of various sizes. Here, the density of ions is not uniform, thus the eigenmodes are not phononic-like waves. We study chains of N>>1 ions and evaluate analytically the long wavelength modes and the density of states in the short wavelength limit. These results reproduce with good approximation the dynamics of chains consisting of dozens of ions. Moreover, they allow to determine the critical transverse frequency required for the stability of the linear structure, which is found in agreement with results obtained by different theoretical methods [D.H.E. Dubin, Phys. Rev. Lett. 71, 2753 (1993)] and by numerical simulations [J.P. Schiffer, Phys. Rev. Lett. 70, 818 (1993)]. We introduce and explore the thermodynamic limit for the ion chain. The thermodynamic functions are found to exhibit deviations from extensivity.
description: 14 pages, 7 figures
Frequência e caracterização fenotípica de estirpes de Campylobacter coli em suínos abatidos para consumo Humano em Portugal
Creators: name: Rosa, Rute
name: Nunes, Alexandra
name: Alves, Margarida
name: Belas, Adriana
name: Santos, Isabel
name: Lima, Ana
name: Mota, Joana
name: Pedroso, Laurentina
name: Gomes, João Paulo
name: Ramos, Sónia
name: Oleastro, Mónica
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2024

description: Objetivos: Este estudo visa a avaliação da frequência de Campylobacter spp. em amostras fecais de suínos abatidos para consumo humano em Portugal e, caracterização fenotípica dos isolados identificados.


Materiais e Métodos: Durante 6 meses, foram colhidas um total de 209 amostras de fezes de suíno em dois matadouros portugueses, que abatem animais de diferentes regiões do país. O isolamento microbiológico foi realizado de acordo com a norma ISO 10272-1:2017 (E). Todos os isolados suspeitos de Campylobacter spp., foram confirmados e identificados por MALDI-TOF. Em todos os isolados com identificação positiva para Campylobacter coli foi estudada a suscetibilidade a 7 antibióticos pelo método de difusão em disco e interpretado de acordo com os critérios EUCAST e SFM.


Resultados: Das 209 amostras estudadas, 8.6% (18/209) foram positivas para Campylobacter, das quais 11 foram identificadas como C. coli, enquanto 4 foram identificados como Campylobacter hyointestinalis e 3 como Campylobacter sputorum bubulus. Todos os 11 isolados C. coli identificados foram resistentes à tetraciclina, tendo também mostrado resistência à ciprofloxacina (82%), à eritromicina (36%) e à amplicina (27%). Todos os isolados testados foram sensíveis à combinação amoxicilina com ácido clavulânico, ao ertapenem e à gentamicina. Dos 11 isolados de C. coli, 6 (54.5%) apresentaram um perfil de multirresistência (MDR), sendo resistentes a 3 três classes de antibióticos diferentes.


Conclusão: No nosso estudo, C. coli foi a espécie mais frequentemente identificada em suínos abatidos para consumo humano, sendo a segunda espécie mais relevante para a infeção humana. Mais de metade dos isolados C. coli identificados apresentaram um perfil de MDR. Finalmente, uma elevada percentagem de resistência à ciprofloxacina e à tetraciclina foi detetada, sendo estes 2 dos antibióticos mais utilizados usados no tratamento da infeção a Campylobacter.


 


Palavras-Chave: Campylobacter coli; Suínos; Resistências; Antibióticos; Saúde pública.


Financiamento: Este trabalho insere-se no projeto estratégico “ResisCampyOH - Multidrug resistant Campylobacter jejuni and Campylobacter coli in Portugal: a One Health study to understand the sources, transmission and persistence”, financiado pela FMV-ULHT em 2022-2023.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 15 (2024): II Encontro de Investigação da FMV da Universidade Lusófona- Edição Especial
Emotion Recognition System from Speech and Visual Information based on Convolutional Neural Networks
Creators: name: Ristea, Nicolae-Catalin
name: Dutu, Liviu Cristian
name: Radoi, Anamaria
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Emotion recognition has become an important field of research in the human-computer interactions domain. The latest advancements in the field show that combining visual with audio information lead to better results if compared to the case of using a single source of information separately. From a visual point of view, a human emotion can be recognized by analyzing the facial expression of the person. More precisely, the human emotion can be described through a combination of several Facial Action Units. In this paper, we propose a system that is able to recognize emotions with a high accuracy rate and in real time, based on deep Convolutional Neural Networks. In order to increase the accuracy of the recognition system, we analyze also the speech data and fuse the information coming from both sources, i.e., visual and audio. Experimental results show the effectiveness of the proposed scheme for emotion recognition and the importance of combining visual with audio data.
Lifelong learning at the borders : transnational learning experiences of migrant workers in Korea
Creators: name: Lee, Romee
Publisher: name: University of British Columbia
Year: 2010

description: This study explores the learning experiences of migrant workers in Korea and contributes to an expanded understanding of the notion of lifelong learning as it relates to transnational adult learners. The study revolves around 2 key research questions: What characterizes the learning experiences of these workers and how do their multiple identities--citizenship, class, race/ethnicity, and gender--impact their learning experience? Field research was conducted over a 1 year period and involved direct interviews with 30 participants--19 migrant workers and 11 learning providers. The researcher gathered participants via snowball sampling and conducted interviews in a semi-structured, open-ended format. By shedding light on the group’s learning experiences, this paper seeks to move beyond previous research that only treats migrant workers’ marginalized existence. It spotlights both the importance of the lifelong learning paradigm to migrant workers and the paradigm’s waning relevance in its present form. Utilizing critical and feminist theories of adult learning, the study shows that migrant workers in general are disenfranchised by systemic forces in the global context and that this area is ripe for further critical study by adult educators. The paper concludes that migratory identities negatively impact lifelong learning experiences for migrant workers in Korea. It is clear that the nation-centric notion of citizenship, and the lifelong learning paradigm as currently constructed, constrain the meaningful participation of migrant workers in learning experiences. Recognizing this, the researcher recommends a more transformative view of membership be adopted and that adult educators transform the current understanding of the lifelong learning paradigm into a more inclusive model that covers the increasing numbers of transnational spaces in which learning occurs.
EWOLUCJA RYNKU PIWA W POLSCE
Creators: name: Klimek, Katarzyna
name: Klimek, Katarzyna
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: beer
subject: beer market
subject: production
subject: foreign trade
subject: consumption
subject: prices
subject: Poland

description: Over the period 1995-2013 Polish brewing sector showed a dynamic increase. Ownership and technological development supported with foreign investments and changes in the pattern of alcohol consumption triggered the growth of production and per capita consumption of beer. Currently Polish market has almost reached a breakeven point saturation with per capita consumption one of the highest in Europe and its further development of the market will not be as dynamic as it used to be previously. Despite a bulk increase after 2004 beer exports is of minor importance for breweries. Further development then will require mainly larger the before expenditure on marketing in order to gain new customers (for instance flavoured beers).
SEKTOR PRZEDSIĘBIORCZOŚCI POZAROLNICZEJ W PROCESIE ZRÓWNOWAŻONEGO ROZWOJU OBSZARÓW WIEJSKICH
Creators: name: Kłodziński, Marek
name: Kłodziński, Marek
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: diversification of rural economy
subject: sustainable development
subject: rural entrepreneurship
subject: institutional infrastructure of entrepreneurship development
subject: effectiveness of entrepreneurship development programs

description: The image of rural entrepreneurship is dominated by micro companies, which very often are not innovative, stagnant in their development, focused on survival. A large share of them belongs to a gray zone. Policies supporting entrepreneurship development should aim to change gradually the current minimalist functioning strategies of many companies in rural areas. There is a need to diversify the existing uniform methods of influencing the development of Small Enterprises Sector and Medium Enterprises Sector. Rural areas, especially those with difficult development conditions, require separate development programs, which would take in account the specificity of rural entrepreneurship, as in the case of farmers, who are being encouraged to conduct their economic activities in harmony with the surrounding environment. Sustainable development complicates but also organizes spontaneous multifunctional rural development.
Avaliação de multirresistências em estirpes de Campylobacter spp. isoladas de diferentes espécies de aves abatidas para consumo humano em Portugal
Creators: name: Penteado, Margarida
name: Ramos, Sónia
name: Alves, Margarida
name: Belas, Adriana
name: Santos, Isabel
name: Lima, Ana
name: Mota, Joana
name: Pedroso, Laurentina
name: Gomes, João Paulo
name: Nunes, Alexandra
name: Oleastro, Mónica
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2024

description: Objetivos: Numa perspetiva de “Uma só Saúde” pretendemos compreender qual a frequência de Campylobacter coli e C. jejuni em amostras de aves abatidas para consumo humano, bem como realizar a caracterização fenotípica de isolados de Campylobacter spp.


Materiais e Métodos: Durante 4 meses, foram colhidas um total de 137 amostras de fezes de aves (90 de frangos e 47 de perus) recolhidas em 6 matadouros diferentes. O isolamento microbiológico foi realizado de acordo com a norma ISO 10272-1:2017 (E). Todos os isolados suspeitos foram confirmados e identificados por MALDI-TOF. Em todos os isolados identificados como C. coli foi estudada a suscetibilidade a 7 antibióticos pelo método de difusão em disco e interpretado de acordo com os critérios EUCAST e SFM.


Resultados: Das 137 amostras analisadas, apenas foi detetada presença de Campylobacter spp. nas amostras de frango, onde a prevalência de isolados positivos e identificados como C. coli foi de 5.11% (7/137). Para 55 amostras (24 frangos e 31 perus), foram ainda detetadas colónias sugestivas de “Campylobacter”, 4 das quais foram identificadas por MALDI-TOF como Enterecoccus faecium (n=2), Corynabacterium durum (n=1) e Bifidobacterium spp. (n=1), enquanto 6 amostras foram identificadas por WGS como Helicobacter pullorum.


Relativamente à resistência aos antimicrobianos, apenas um isolado C. coli foi sensível a todos os antibióticos testados. Curiosamente, 85.7% (6/7) dos isolados C. coli apresentou um perfil de multirresistência (MDR) à ciprofloxacina, tetraciclina, eritromicina e ampicilina; adicionalmente um destes isolados MDR apresentou suscetibilidade diminuída à combinação de amoxicilina com ácido clavulânico. Todos os isolados C. coli demonstraram sensibilidade ao ertapenem e à gentamicina.


Conclusão: Apesar de não identificarmos a presença de Campylobacter spp. em perus, o nosso estudo mostra a presença de isolados de C. coli com perfil de MDR, em amostras de frango abatidos para consumo humano.


 


Palavras-Chave: Campylobacter; MDR; Aves; “Uma só Saúde”; Zoonose.


 


Financiamento: Este trabalho insere-se no projeto estratégico “ResisCampyOH - Multidrug resistant Campylobacter jejuni and Campylobacter coli in Portugal: a One Health study to understand the sources, transmission and persistence”, financiado pela FMV-ULHT em 2022-2023.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 15 (2024): II Encontro de Investigação da FMV da Universidade Lusófona- Edição Especial
Elliptic instability in the Lagrangian-averaged Euler-Boussinesq-alpha equations
Creators: name: Fabijonas, Bruce R.
name: Holm, Darryl D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We examine the effects of turbulence on elliptic instability of rotating stratified incompressible flows, in the context of the Lagragian-averaged Euler-Boussinesq-alpha, or \laeba, model of turbulence. We find that the \laeba model alters the instability in a variety of ways for fixed Rossby number and Brunt-Väisälä frequency. First, it alters the location of the instability domains in the $(γ,\cosθ)-$parameter plane, where $θ$ is the angle of incidence the Kelvin wave makes with the axis of rotation and $γ$ is the eccentricity of the elliptic flow, as well as the size of the associated Lyapunov exponent. Second, the model shrinks the width of one instability band while simultaneously increasing another. Third, the model introduces bands of unstable eccentric flows when the Kelvin wave is two-dimensional. We introduce two similarity variables--one is a ratio of the Brunt-Väisälä frequency to the model parameter $Υ_0 = 1+α^2β^2$, and the other is the ratio of the adjusted inverse Rossby number to the same model parameter. Here, $α$ is the turbulence correlation length, and $β$ is the Kelvin wave number. We show that by adjusting the Rossby number and Brunt-Väisälä frequency so that the similarity variables remain constant for a given value of $Υ_0$, turbulence has little effect on elliptic instability for small eccentricities $(γ\ll 1)$. For moderate and large eccentricities, however, we see drastic changes of the unstable Arnold tongues due to the \laeba model.
description: 23 pages (sigle spaced w/figure at the end), 9 figures--coarse quality, accepted by Phys. Fluids
Teoria o Peso da Água , novas evidências .
Creators: name: Araujo, Pedro Ricardo Coutinho
Publisher: name: Zenodo
Year: 2025

description: Se sabemos que a adição e subtração de água ( líquida ou sólida ) tem interferência na " crosta " porque não concideramos os oceanos  como o verdadeiro motor para a Tectônica de Placas . Aqui estão algumas evidências  de superfície .
AGN anisotropic radiative feedback set by black hole spin
Creators: name: Ishibashi, W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We consider the impact of anisotropic radiation on the active galactic nucleus (AGN) radiative dusty feedback. The radiation pattern originating from the accretion disc is determined by the central black hole (BH) spin. Here we analyse how such BH spin-induced angular dependence affects the dynamics and energetics of the radiation pressure-driven outflows, as well as AGN obscuration and BH accretion. In addition, we explore the effect of a spatially varying dust-to-gas ratio on the outflow propagation. We obtain two distinct trends for high-spin and low-spin objects, providing a direct connection between anisotropic feedback and BH spin. In the case of maximum spin, powerful quasi-spherical outflows can propagate on large scales, at all inclination angles with fairly uniform energetics. In contrast, in the case of zero spin, only weaker bipolar outflows can be driven in the polar directions. As a result, high BH spins can efficiently clear out the obscuring gas from most directions, whereas low BH spins can only remove dusty gas from the polar regions, hence also determining the overall AGN obscuration geometry. Due to such anisotropic feedback, high BH spins can prevent accretion of gas from most directions (except in the equatorial plane), while low BH spins allow inflows to proceed from a wider range of directions. This may have important implications for the BH growth in the early Universe. Anisotropic radiative dusty feedback, ruled by the BH spin, may thus play a major role in shaping AGN evolution over cosmic time.
description: MNRAS, in press
title: WiNoDa Knowledge Lab – Kompetenzvermittlung für die datengetriebene und objektzentrierte Forschung
title: Quo vadis? Offene Datenkultur: Offenheit reicht nicht aus  – Auf dem Weg zu einer lebendigen Datenkultur.
titleType: AlternativeTitle
Creators: name: Kobialka, Sophie
Publisher: name: Zenodo
Year: 2025
Subjects: open sciece
open access
data competence centre
winoda
data science
data
research data
research data management
open science competences

description: Daten eröffnen neue Zugänge und Einblicke in Wissenschaft, Kultur und Gesellschaft und bergen vielfältiges Innovationspotential. In der Veranstaltung "Offene Datenkultur: Offenheit reicht nicht aus  – Auf dem Weg zu einer lebendigen Datenkultur", organisiert vom Kooperativer Bibliotheksverbund Berlin-Brandenburg (KOBV), aus der Reihe "Quo Vadis offene Wissenschaft in Berlin und Brandenburg", soll der Frage nachgegangen werden, vor dem Hintergrund immer zahlreicher verfügbarer offener Kulturdaten, eine offene Datenkultur aussehen könnte. 

Dieser Foliensatz stellt im Rahmen der Veranstaltung das BMBF- und EU-geförderte Projekt und Datenkompetenzzentrum "WiNoDa Knowledge Lab" (Wissenslabor für Naturwissenschaftliche Sammlungen und objektzentrierte Daten) sowie den Projektstand im Februar 2025 vor. 
description: Das Projekt ist gefördert mit Mitteln des Bundesministeriums für Bildung und Forschung (BMBF) aus der Richtlinie zur Stärkung der Datenkompetenzen des wissenschaftlichen Nachwuchses (Förderkennzeichen: 16DKZ2055E) sowie der Europäischen Union im Rahmen von NextGenerationEU.
BARIERY I CZYNNIKI SPRZYJAJĄCE FUNKCJONOWANIU GOSPODARSTW EKOLOGICZNYCH W ŚWIETLE WYNIKÓW OGÓLNOPOLSKICH BADAŃ ANKIETOWYCH
Creators: name: Kociszewski, Karol
name: Kociszewski, Karol
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: organic farming
subject: ecological products market

description: The paper’s aim is to identify barriers and factors favourable for development of organic food market in Poland. It contains the results of the nationwide survey which was carried out among farms’ owners with organic farming certificate. According to the survey’s results the main barriers are relative little yield and high costs – in comparison to conventional agriculture. Other barriers are connected with limited sales possibilities: weak integration with formal distribution channels, limited possibilities of horizontal integration, as well as underdeveloped processing and distribution system. The main source of growth in the profitability of farms and thus a factor of development are agri-environmental subsidies. Their increase is demanded by most respondents.