cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prosthogonimidae (Luhe, 1909) Lahille 1922
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Prosthogonimidae

description: Family Prosthogonimidae (Lühe, 1909) Lahille, 1922   Prosthogonimus Lühe, 1899
 Prosthogonimus ovatus (Rudolphi, 1803)
 Syn.: P. cuneatus (Rudolphi)
 Hosts: Gallus gallus domesticus (L.), Furnarius rufus (Gmelin), Plegadis chihi (Vieillot), Nothura macu­
 losa (Temminck), Rhynchotus rufescens (Temminck). Site of infection: eggs, cloaca.
Localities: Lobos; Punta Blanca, Buenos Aires Province.
Material deposited: MLP, 3725/5, 5480, 5481.
References: Wolffhügel (1909), Lahille (1918), Boero & Led (1968, 1971), Digiani (2000).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on pages 14-15, DOI: 10.5281/zenodo.273687
Estratégias de planeamento em turismo industrial: Uma análise de casos de estudo
Creators: name: Mota, Ana
name: Costa, Carlos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: O turismo industrial tem vindo a adquirir destaque, a ser mais debatido e a ganhar cada vez mais terreno em Portugal. É objetivo central do presente artigo a sistematização e apresentação de um conjunto de estratégias de planeamento em turismo industrial. Em termos metodológicos, este trabalho teve como base a análise da literatura existente sobre a temática do planeamento em turismo industrial, bem como a seleção de casos de estudo que permitiram a sistematização de linhas orientadoras para o processo de planeamento do tipo de oferta turística estudada neste contexto. As estratégias elencadas reúnem-se em três grandes domínios: organização do produto, ambiente intrínseco global e governância. Considera-se que estas são as três esferas de atuação essenciais para que o processo de planeamento dê uma resposta eficiente e eficaz na implementação de um produto de turismo industrial no âmbito municipal ou regional.
description: Revista Turismo & Desenvolvimento, n.º 19 (2013)
No compelling evidence of significant early star cluster disruption in the Large Magellanic Cloud
Creators: name: de Grijs, Richard
name: Goodwin, Simon P.
name: Anders, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Whether or not the rich star cluster population in the Large Magellanic Cloud (LMC) is affected by significant disruption during the first few x 10^8 yr of its evolution is an open question and the subject of significant current debate. Here, we revisit the problem, adopting a homogeneous data set of broad-band imaging observations. We base our analysis mainly on two sets of self-consistently determined LMC cluster ages and masses, one using standard modelling and one which takes into account the effects of stochasticity in the clusters' stellar mass functions. On their own, the results based on any of the three complementary analysis approaches applied here are merely indicative of the physical conditions governing the cluster population. However, the combination of our results from all three different diagnostics leaves little room for any conclusion other than that the optically selected LMC star cluster population exhibits no compelling evidence of significant disruption -- for clusters with masses, M_cl, of log(M_cl/M_sun) >= 3.0-3.5 -- between the age ranges of [3-10] Myr and [30-100] Myr, either "infant mortality" or otherwise. In fact, there is no evidence of any destruction beyond that expected from simple models just including stellar dynamics and stellar evolution for ages up to 1 Gyr. It seems, therefore, that the difference in environmental conditions in the Magellanic Clouds on the one hand and significantly more massive galaxies on the other may be the key to understanding the apparent variations in cluster disruption behaviour at early times.
description: 15 pages, 10 figures; MNRAS, in press. Until formal publication, the online-only table (Table 1) can be obtained upon request by email from the authors
title: Aus der Curiositäten-Sammlung. Der Reichsfinke; [1848]
title: Von hoher Reichsadleriger Abkunft, singt gar nicht u. spricht aber
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Taf. 3
Graded Lie-Rinehart algebras
Creators: name: Barreiro, Elisabete
name: Calderón, Antonio J.
name: Navarro, Rosa M.
name: Sánchez, José M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17A60, 17B60, 17B70

description: We introduce the class of graded Lie-Rinehart algebras as a natural generalization of the one of graded Lie algebras. For $G$ an abelian group, we show that if $L$ is a tight $G$-graded Lie-Rinehart algebra over an associative and commutative $G$-graded algebra $A$ then $L$ and $A$ decompose as the orthogonal direct sums $L = \bigoplus_{i \in I}I_i$ and $A = \bigoplus_{j \in J}A_j$, where any $I_i$ is a non-zero ideal of $L$, any $A_j$ is a non-zero ideal of $A$, and both decompositions satisfy that for any $i \in I$ there exists a unique $j \in J$ such that $A_jI_i \neq 0$. Furthermore, any $I_i$ is a graded Lie-Rinehart algebra over $A_j$. Also, under mild conditions, it is shown that the above decompositions of $L$ and $A$ are by means of the family of their, respective, gr-simple ideals.
description: arXiv admin note: substantial text overlap with arXiv:1706.07084
Collision fragmentation of aggregates. The role of the interaction potential between comprising particles
Creators: name: Osinsky, Alexander
name: Brilliantov, Nikolai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate disruptive collisions of aggregates comprised of particles with different interaction potentials. We study Lennard-Jones (L-J), Tersoff, modified L-J potential and the one associated with Johnson-Kendall-Roberts (JKR) model. These refer to short, middle and long-ranged inter-particle potentials and describe both inter-atomic interactions and interactions of macroscopic adhesive bodies. We perform comprehensive molecular dynamics simulations and observe for all four potentials power-law dependencies for the size distribution of collision fragments and for their size-velocity correlation. We introduce a new fragmentation characteristic -- the shattering degree $S$, quantifying the fraction of monomers in debris and reveal its universal behavior. Namely, we demonstrate that for all potentials, $1-S$ is described by a universal function of the impact velocity. Using the above results, we perform the impact classification and construct the respective collision phase diagram. Finally, we present a qualitative theory that explains the observed scaling behavior.
description: Submitted to Physica A
Turismo interno: A conceptualização e a cobertura estatística
Creators: name: Silva, José Sancho
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: O presente artigo visa uma abordagem aos aspetos conceptuais que envolvem a delimitação do fenómeno turístico, com especial incidência nas particularidades que distinguem o turismo interno. Pretende-se igualmente demonstrar que os eventuais progressos na definição da abrangência do turismo interno, contribuem para um conhecimento mais adequado desta forma de turismo, com todas as vantagens daí decorrentes. Por outro lado, a maior precisão na perspetiva conceptual implica a existência de uma cobertura estatística em conformidade, o que pressupõe a capacidade de operacionalizar os instrumentos adequados para o efeito. Neste sentido, constitui igualmente um objetivo deste artigo garantir a sistematização dos instrumentos estatísticos que se perfilam como indispensáveis à caracterização do turismo interno, enfatizando-se igualmente os desafios e os condicionalismos associados.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
A Method to Change Phase Transition Nature -- Toward Annealing Method --
Creators: name: Tamura, Ryo
name: Tanaka, Shu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper, we review a way to change nature of phase transition with annealing methods in mind. Annealing methods are regarded as a general technique to solve optimization problems efficiently. In annealing methods, we introduce a controllable parameter which represents a kind of fluctuation and decrease the parameter gradually. Annealing methods face with a difficulty when a phase transition point exists during the protocol. Then, it is important to develop a method to avoid the phase transition by introducing a new type of fluctuation. By taking the Potts model for instance, we review a way to change the phase transition nature. Although the method described in this paper does not succeed to avoid the phase transition, we believe that the concept of the method will be useful for optimization problems.
description: 27 pages, 3 figures, revised version will appear in proceedings of Kinki University Quantum Computing Series Vo. 9
Gymnophallidae Odhner 1905
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Gymnophallidae

description: Family Gymnophallidae Odhner, 1905   Bartolius Cremonte, 2001
 Bartolius pierrei Cremonte, 2001
 Hosts: Larus dominicanus Lichtenstein, Calidris canutus rufa (Wilson). Site of infection: intestine.
Localities: Fracasso beach and Colombo beach (Península Valdés) and Rada­Tilly, Chubut Province;
 Punta Medanosa and Punta Loyola, Santa Cruz Province. Life history: Hi1 and Hi2: Darina solenoides (King).
Material deposited: MLP, 4791–4793, BMNH.
References: Cremonte, 2001, Cremonte & Ituarte (2003), Cremonte (2004).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on page 13, DOI: 10.5281/zenodo.273687
Turismo e Lusofonia
Creators: name: Trigo, Luiz
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: Este artigo analisa as diferenças linguísticas entre os países de língua portuguesa. As culturas locais, o meio ambiente, os desenvolvimentos históricos e econômicos peculiares originam diferentes meios de expressões orais ou escritas, mesmo entre povos que partilham da mesma língua. As raízes culturais se transformam, ao longo da história, em diferentes meios de expressão, graças à riqueza cultural humana. É muito importante compreender as principais vertentes da cultura, desde os textos mais antigos de cada povo até o imaginário contemporâneo, construído pelos livros, tradições orais, brincadeiras e jogos, o imenso mundo da arte, cultura de massa, viagens e turismo, comércio, conflitos e, não menos importante, o mundo virtual de nossas comunicações e expressões. O universo do turismo floresce nesse vasto campo de tendências e desafios culturais, interagindo com a matéria-prima mais estimulante: as pessoas e suas realidades, desejos, receios e sonhos.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Gradient-Based Mixed Planning with Symbolic and Numeric Action Parameters
Creators: name: Jin, Kebing
name: Zhuo, Hankz Hankui
name: Xiao, Zhanhao
name: Wan, Hai
name: Kambhampati, Subbarao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Dealing with planning problems with both logical relations and numeric changes in real-world dynamic environments is challenging. Existing numeric planning systems for the problem often discretize numeric variables or impose convex constraints on numeric variables, which harms the performance when solving problems. In this paper, we propose a novel algorithm framework to solve numeric planning problems mixed with logical relations and numeric changes based on gradient descent. We cast the numeric planning with logical relations and numeric changes as an optimization problem. Specifically, we extend syntax to allow parameters of action models to be either objects or real-valued numbers, which enhances the ability to model real-world numeric effects. Based on the extended modeling language, we propose a gradient-based framework to simultaneously optimize numeric parameters and compute appropriate actions to form candidate plans. The gradient-based framework is composed of an algorithmic heuristic module based on propositional operations to select actions and generate constraints for gradient descent, an algorithmic transition module to update states to next ones, and a loss module to compute loss. We repeatedly minimize loss by updating numeric parameters and compute candidate plans until it converges into a valid plan for the planning problem. In the empirical study, we exhibit that our algorithm framework is both effective and efficient in solving planning problems mixed with logical relations and numeric changes, especially when the problems contain obstacles and non-linear numeric effects.
description: 41 pages, 22 figures. Accepted by Artificial Intelligence
Black Hole Demography: From scaling relations to models
Creators: name: Shankar, Francesco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this contributed paper I review our current knowledge of the local Black Hole (BH) scaling relations, and their impact on the determination of the local BH mass function. I particularly emphasize the remaining systematic uncertainties impinging upon a secure determination of the BH mass function and how progress can be made. I then review and discuss the evidence for a different time evolution for separate BH-galaxy scaling relations, and how these independent empirical evidences can be reconciled with the overall evolution of the structural properties of the host galaxies. I conclude discussing BH demography in the context of semi-empirical continuity accretion models, as well as more complex evolutionary models, emphasizing the general constraints we can set on them.
description: 20 pages, 5 figures. Invited article for the focus issue on astrophysical black holes in Classical and Quantum Gravity, guest editors: D.Merritt and L. Rezzolla
Roteirização do turismo: Uma abordagem preliminar à “apresentação-interpretação” do território
Creators: name: Figueira, Luís Mota
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: Pretende-se apresentar a importância dos percursos de visitação inseridos no conceito de roteirização do turismo. O autor apresenta um novo contributo na sequência das ideias e dos argumentos que defendeu em trabalho de Estágio de pós-doutoramento dedicado à criação de manual para elaboração de roteiros de turismo cultural. Criou-se um esquema orientado à criação de circuitos, de itinerário e de rotas, considerando as especificidades de cada um destes produtos turísticos e citando-se casos de aplicação.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Stomylotrematidae Poche 1926
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Stomylotrematidae

description: Family Stomylotrematidae Poche, 1926   Stomylotrema Looss, 1900
 Stomylotrema vicarium Braun, 1901
 Natural host: Larus dominicanus Lichtenstein.
 Experimental hosts: Gallus gallus domesticus (L.), Vanellus chilensis (Molina). Site of infection: intestine, cloaca.
Locality: Buenos Aires Province.
 Life history: Hi1: Probably Pomacea canaliculata (Lamark). Hi2: larvae of Megadytes glaucus (Brullé)
from Buenos Aires Province; metacercariae encysted in visceral cavity. References: Szidat (1964), Ostrowski de Núñez (1978).
 Stomylotrema sp.
 Natural hosts: Plegadis chihi (Vieillot), Agelaius thilius petersii (Laubmann). Site of infection: not reported.
Locality: Buenos Aires Province.
 Life history: Hi2: adults of Belostoma elegans (Mayr) and B. oxyurum (Dufour) from Buenos Aires Province and B. foveolatum (Mayr) from Misiones Province; metacercariae encysted in body cavity.
Material deposited: MLP, 4812–4826.
Reference: Digiani (2002).
 Comments: Digiani (2002) report the presence of excysted metacercariae in the intestine of Rhamdia
 sapo (Valenciennes) (MLP, 4827).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on page 15, DOI: 10.5281/zenodo.273687
Produção Científica sobre Turismo Rural no Brasil: Percepções do poder público, da iniciativa privada e dos pesquisadores
Creators: name: Solha, Karina Toledo
name: Rejowski, Mirian
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: A complexidade e a diversidade do turismo no meio rural despertam e estimulam o interesse de pesquisadores de diferentes áreas do conhecimento, resultando numa extensa e heterogênea produção científica sobre o tema e, consequentemente, na ampliação e no aprofundamento dos estudos e debates. Esse interesse é demonstrado também pelo poder público e pela iniciativa privada, que têm organizado sistematicamente espaços para discussão do tema, caracterizados pela presença e participação dos diversos grupos, direta ou indiretamente, dedicados ao turismo rural. Desse modo, visões distintas sobre o assunto são compartilhadas e discutidas, promovendo parcerias e contribuindo para um significativo avanço na compreensão deste fenômeno. Neste artigo buscou-se construir um panorama das relações entre o conhecimento científico e o desenvolvimento do turismo rural no país de 1984 a 2012, a partir do estudo das temáticas dos eventos técnicos, comerciais e científicos e dos documentos oficiais que servem como diretrizes para o segmento. Como resultado, observou-se que a quantidade e a frequência de encontros para debater as questões sobre o tema são um forte indicativo do compromisso dos diferentes segmentos envolvidos com o turismo rural no país. Destaca-se, ainda, a parceria permanente entre os pesquisadores, os empresários do setor, as associações e o poder público na produção e na difusão do conhecimento produzido. Ao longo deste período, o segmento superou as dificuldades de implementação, avançou na busca de soluções e está preocupado com os impactos decorrentes de seu desenvolvimento.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Was ist geblieben? — Erinnerungen und Besinnungen zum 10. Todestag von Werner Eiert
Creators: name: Tratz, Max
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 12 (1964): Jahrbuch des Martin-Luther-Bundes, Band 12
Order by disorder in classical kagome antiferromagnets with chiral interactions
Creators: name: Pitts, Jackson
name: Buessen, Finn Lasse
name: Moessner, Roderich
name: Trebst, Simon
name: Shtengel, Kirill
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Heisenberg antiferromagnet on the kagome lattice is an archetypal instance of how large ground state degeneracies arise, and how they may get resolved by thermal and quantum fluctuations. Augmenting the Heisenberg model by chiral spin interactions has proved to be of particular interest in the discovery of certain chiral quantum spin liquids. Here we consider the classical variant of this chiral kagome model and find that it exhibits, similar to the classical Heisenberg antiferromagnet, a remarkably large and structured ground-state manifold, which combines continuous and discrete degrees of freedom. This allows for a rich set of order-by-disorder phenomena. Degeneracy lifting occurs in a highly selective way, choosing already at the harmonic level specific triaxial states which however retain an emergent $Z_2$ degree of freedom (absent in the conventional Heisenberg model). We also study the competition of entropic and energetic ground state selection as the model interpolates between the purely chiral and Heisenberg cases. For this mixed model, we find a "proximate ordered-by-disorder" finite-temperature regime where fluctuations overcome the energetic ground state preference of the perturbation. Finally, a semiclassical route to a spin liquid is provided by quantum order by disorder in the purely chiral models, where the aforementioned $Z_2$ degrees of freedom are elevated to the role of an emergent gauge field.
Zygocotylidae Sey 1988
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Zygocotylidae

description: Family Zygocotylidae Sey, 1988   Zygocotyle Stunkard, 1917
 Zygocotyle lunata (Diesing, 1836) Stunkard, 1917
 Natural hosts: Anas sibilatrix Poepping, Cygnus melanocorypha (Molina). Experimental hosts: Mus musculus L., Gallus gallus domesticus (L.). Site of infection: ceca.
Localities: Pellegrini Lake, Río Negro Province; Del Burro lagoon, Buenos Aires Province; Buenos
Aires Zoological Garden, Buenos Aires city.
 Life history: in Buenos Aires Zoological Garden, Buenos Aires city. Hi1: Biomphalaria peregrina
(d’Orbigny) (natural host).
Material deposited: MLP, 655 D, 3322.
 References: Sutton & Lunaschi (1987), Digiani (1997b), Ostrowski de Núñez et al. (2003).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on page 18, DOI: 10.5281/zenodo.273687
Impact of lattice strain on the tunnel magneto-resistance in Fe/Insulator/Fe and Fe/Insulator/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ magnetic tunnel junctions
Creators: name: Saeed, Y.
name: Singh, N.
name: Useinov, N.
name: Schwingenschlögl, U.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The objective of this work is to describe the tunnel electron current in single barrier magnetic tunnel junctions within a new approach that goes beyond the single-band transport model. We propose a ballistic multi-channel electron transport model that can explain the influence of in-plane lattice strain on the tunnel magnetoresistance as well as the asymmetric voltage behavior. We consider as an example single crystal magnetic Fe(110) electrodes for Fe/Insulator/Fe and Fe/Insulator/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ tunnel junctions, where the electronic band structures of Fe and La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ are derived by \it{ab-initio} calculations.
Towards parallel time-stepping for the numerical simulation of atherosclerotic plaque growth
Creators: name: Frei, Stefan
name: Heinlein, Alexander
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The numerical simulation of atherosclerotic plaque growth is computationally prohibitive, since it involves a complex cardiovascular fluid-structure interaction (FSI) problem with a characteristic time scale of milliseconds to seconds, as well as a plaque growth process governed by reaction-diffusion equations, which takes place over several months. In this work we combine a temporal homogenization approach, which separates the problem in computationally expensive FSI problems on a micro scale and a reaction-diffusion problem on the macro scale, with parallel time-stepping algorithms. It has been found in the literature that parallel time-stepping algorithms do not perform well when applied directly to the FSI problem. To circumvent this problem, a parareal algorithm is applied on the macro-scale reaction-diffusion problem instead of the micro-scale FSI problem. We investigate modifications in the coarse propagator of the parareal algorithm, in order to further reduce the number of costly micro problems to be solved. The approaches are tested in detailed numerical investigations based on serial simulations.
A identidade turística do território da União Europeia: Um olhar português
Creators: name: Umbelino, Jorge
name: Filipe, Raúl
name: Amorim, Éricka
name: Carranca, Maria Adelaide
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: A oferta turística tem vindo a crescer como facto da política europeia, por razões que se prendem tanto com a evolução interna do fenómeno na UE como com o aparecimento de fortes concorrentes externos. Importa, por isso, refletir sobre as relações que se possam estabelecer entre i) a eventual emergência do território da União como um destino turístico autónomo e ii) os processos de gestão da oferta dos sub-destinos turísticos que o compõem e os mecanismos da sua procura. O resultado da consulta a um painel de especialistas mostra que o entendimento acerca das consequências para Portugal de uma eventual emergência do território da União como um destino turístico autónomo não é consensual, tanto no que respeita ao sentido positivo ou negativo dessas consequências como às matérias que consubstanciam as opiniões expressas. Por outro lado, os dados recolhidos a partir de um inquérito aos portugueses sobre a importância que atribuem, nos seus processos de escolha entre destinos turísticos, à condição de alguns deles estarem incluídos noutros Estados-membros da UE diz-nos que ela não é muito significativa, sendo apenas valorizados alguns aspetos indiretos que decorrem dessa condição (por exemplo, ausência de vistos e de controlo alfandegário, moeda única, em alguns casos a proximidade geográfica).
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Nonintegrability of the SEIR epidemic model
Creators: name: Yagasaki, Kazuyuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 92D30, 37J30, 34M15, 12H05

description: We prove the nonintegrability of the susceptible-exposed-infected-removed (SEIR) epidemic model in the Bogoyavlenskij sense. This property of the SEIR model is different from the more fundamental susceptible-infected-removed (SIR) model, which is Bogoyavlenskij-nonintegrable. Our basic tool for the proof is an extension of the Morales-Ramis theory due to Ayoul and Zung. Moreover, we extend the system to a six-dimensional system to treat transcendental first integrals and commutative vector fields. We also use the fact that the incomplete gamma function $Γ(α,x)$ is not elementary for $α\not\in\mathbb{N}$, of which a proof is included.
description: 19 pages
FakeNewsLab: Experimental Study on Biases and Pitfalls Preventing us from Distinguishing True from False News
Creators: name: Ruffo, Giancarlo
name: Semeraro, Alfonso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: K.4.2; J.4

description: Misinformation posting and spreading in Social Media is ignited by personal decisions on the truthfulness of news that may cause wide and deep cascades at a large scale in a fraction of minutes. When individuals are exposed to information, they usually take a few seconds to decide if the content (or the source) is reliable, and eventually to share it. Although the opportunity to verify the rumour is often just one click away, many users fail to make a correct evaluation. We studied this phenomenon with a web-based questionnaire that was compiled by 7,298 different volunteers, where the participants were asked to mark 20 news as true or false. Interestingly, false news is correctly identified more frequently than true news, but showing the full article instead of just the title, surprisingly, does not increase general accuracy. Also, displaying the original source of the news may contribute to mislead the user in some cases, while a genuine wisdom of the crowd can positively assist individuals' ability to classify correctly. Finally, participants whose browsing activity suggests a parallel fact-checking activity, show better performance and declare themselves as young adults. This work highlights a series of pitfalls that can influence human annotators when building false news datasets, which in turn fuel the research on the automated fake news detection; furthermore, these findings challenge the common rationale of AI that suggest users to read the full article before re-sharing.
description: 18 pages, 12 figures, 3 tables
Random Aharonov-Bohm vortices and some exact families of integrals: Part III
Creators: name: Ouvry, Stephane
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: As a sequel to [1] and [2], I present some recent progress on Bessel integrals $\int_0^{\infty}{\rmd u}\; uK_0(u)^{n}$, $\int_0^{\infty}{\rmd u}\; u^{3}K_0(u)^{n}$, ... where the power of the integration variable is odd and where $n$, the Bessel weight, is a positive integer. Some of these integrals for weights n=3 and n=4 are known to be intimately related to the zeta numbers zeta(2) and zeta(3). Starting from a Feynman diagram inspired representation in terms of n dimensional multiple integrals on an infinite domain, one shows how to partially integrate to n-2 dimensional multiple integrals on a finite domain. In this process the Bessel integrals are shown to be periods. Interestingly enough, these "reduced" multiple integrals can be considered in parallel with some simple integral representations of zeta numbers. One also generalizes the construction of [2] on a particular sum of double nested Bessel integrals to a whole family of double nested integrals. Finally a strong PSLQ numerical evidence is shown to support a surprisingly simple expression of zeta(5) as a linear combination with rational coefficients of Bessel integrals of weight n= 8.
description: 13 pages. arXiv admin note: substantial text overlap with arXiv:1209.1036
Bayesian Physics-Informed Neural Networks for the Subsurface Tomography based on the Eikonal Equation
Creators: name: Gou, Rongxi
name: Zhang, Yijie
name: Zhu, Xueyu
name: Gao, Jinghuai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The high cost of acquiring a sufficient amount of seismic data for training has limited the use of machine learning in seismic tomography. In addition, the inversion uncertainty due to the noisy data and data scarcity is less discussed in conventional seismic tomography literature. To mitigate the uncertainty effects and quantify their impacts in the prediction, the so-called Bayesian Physics-Informed Neural Networks (BPINNs) based on the eikonal equation are adopted to infer the velocity field and reconstruct the travel-time field. In BPINNs, two inference algorithms including Stein Variational Gradient Descent (SVGD) and Gaussian variational inference (VI) are investigated for the inference task. The numerical results of several benchmark problems demonstrate that the velocity field can be estimated accurately and the travel-time can be well approximated with reasonable uncertainty estimates by BPINNs. This suggests that the inferred velocity model provided by BPINNs may serve as a valid initial model for seismic inversion and migration.
Molecular Dynamics on Quantum Annealers
Creators: name: Gayday, Igor
name: Babikov, Dmitri
name: Teplukhin, Alexander
name: Kendrick, Brian K.
name: Mniszewski, Susan M.
name: Zhang, Yu
name: Tretiak, Sergei
name: Dub, Pavel A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this work we demonstrate a practical prospect of using quantum annealers for simulation of molecular dynamics. A methodology developed for this goal, dubbed Quantum Differential Equations (QDE), is applied to propagate classical trajectories for the vibration of the hydrogen molecule in several regimes: nearly harmonic, highly anharmonic, and dissociative motion. The results obtained using the D-Wave 2000Q quantum annealer are all consistent and quickly converge to the analytical reference solution. Several alternative strategies for such calculations are explored and it was found that the most accurate results and the best efficiency are obtained by combining the quantum annealer with classical post-processing (greedy algorithm). Importantly, the QDE framework developed here is entirely general and can be applied to solve any system of first-order ordinary nonlinear differential equations using a quantum annealer.
Quantum corrections to holographic entanglement entropy
Creators: name: Faulkner, Thomas
name: Lewkowycz, Aitor
name: Maldacena, Juan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider entanglement entropy in quantum field theories with a gravity dual. In the gravity description, the leading order contribution comes from the area of a minimal surface, as proposed by Ryu-Takayanagi. Here we describe the one loop correction to this formula. The minimal surface divides the bulk into two regions. The bulk loop correction is essentially given by the bulk entanglement entropy between these two bulk regions. We perform some simple checks of this proposal.
description: 21 pages, 10 figures. V2: reference added
Notocotylidae Luhe 1909
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Notocotylidae

description: Family Notocotylidae Lühe, 1909   Catatropis Odhner, 1905
 Catatropis chilinae Flores & Brugni, 2003
Natural host: unknown.
 Experimental hosts: Gallus gallus domesticus (L.), Anas sp. Site of infection: distal portion of ceca.
 Life history: Hi1: Chilina dombeiana (Bruiguiere) (natural host) from Lacar Lake, Neuquén Province;
metacercariae in digestive gland and around the intestine wall. Material deposited: MACN, MLP, UNC, MNZ, BMNH. Reference: Flores & Brugni (2003).
 Catatropis hatcheri Flores & Brugni, 2006
 Natural host: Anas platyrhynchos Linnaeus.
 Experimental hosts: Anas sp.; Gallus gallus domesticus (L.). Site of infection: distal portion of ceca.
Locality: near Hess Lake, Río Negro Province.
 Life history: Hi1: Heleobia hatcheri (Pilsbry) (natural host) from Nahuel Huapí Lake, Río Negro Prov­
ince; metacercariae in digestive gland and around the intestine wall. Material deposited: MACN, MLP, UNC, BMNH.
Reference: Flores & Brugni (2006).
 Notocotylus Diesing, 1839
 Notocotylus attenuatus (Rudolphi, 1809) Kossack, 1911 Hosts: Anas versicolor Vieillot, Cygnus melanocorypha (Molina). Site of infection: gizzard, intestine, ceca. Locality: De Monte lagoon, Buenos Aires Province. References: Boero et al. (1972 a, 1972b).
 Notocotylus biomphalariae Flores & Brugni, 2005 Natural host: unknown.
 Experimental hosts: Anas sp., Gallus gallus domesticus (L.). Site of infection: distal portion of ceca.
 Life history: Hi1: Biomphalaria peregrina (d’Orbigny) (natural host) from Fantasma Pond, near Nahuel Huapí Lake and Pond near Mascardi Lake, Patagonia; metacercariae encysted in digestive gland and around the intestine wall.
Material deposited: MACN, MLP, UNC, BMNH. Reference: Flores & Bugni (2005).
 Notocotylus chionis Baylis, 1928
 Host: Chionis alba (Gmelin).
Site of infection: ceca.
Locality: Patagonia.
Material deposited: BMNH.
 References: Baylis (1928), Boero et al. (1972a).
 Notocotylus gibbus (Mehlis) Kossack, 1911
 Host: Fulica leucoptera Vieillot.
Site of infection: intestine.
Locality: Buenos Aires Province.
Reference: Szidat & Szidat (1961).
 Notocotylus imbricatus (Looss, 1893) Szidat, 1935 Host: Anas sibilatrix (Poepping).
Site of infection: ceca.
Locality: Pellegrini Lake, Río Negro Province. Material deposited: MLP, 751 D.
Reference: Lunaschi & Sutton (1987).
 Notocotylus tachyeretis Duthoit, 1931
 Host: Tachyeres patachonicus (King).
Site of infection: large intestine and ceca. Locality: Patagonia.
 Reference: Boero et al. (1972a).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on pages 18-19, DOI: 10.5281/zenodo.273687
Turismo e Cultura
Creators: name: Ramos, Francisco Martins
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: Este artigo enfatiza a relação dialógica entre Turismo e Cultura, numa perspetiva sócio-antropológica. De facto, o Turismo é fator do contacto entre pessoas oriundas de territórios, países e continentes diversos, fomenta a interação entre visitantes e visitados, proporciona troca de ideias, experiências e práticas sociais. O Turismo é, juntamente com o processo migratório, o grande veículo atual do contacto de culturas, o instrumento privilegiado das relações interpessoais, o elo potenciador da ligação com estranhos, forasteiros, hóspedes e estrangeiros. O Turismo incorpora o estranho, acelera a integração, acultura o nativo e o forasteiro, define e fomenta sincretismos. O autor fundamenta os seus argumentos numa revisão histórica do processo de afirmação do Turismo como elemento cultural, com base em investigações teóricas e empíricas de autores que abordaram a presente temática.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Topological state transfers in cavity-magnon system
Creators: name: Bao, Xi-Xi
name: Guo, Gang-Feng
name: Tan, Lei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose an experimentally feasible scheme for realizing quantum state transfer via the topological edge states in a one-dimensional cavity-magnon lattice. We find that the cavity-magnon system can be mapped analytically into the generalized Su-Schrieffer-Heeger model with tunable cavity-magnon coupling. It can be shown that the edge state can be served as a quantum channel to realize the photonic and magnonic state transfers by adjusting the cavity-cavity coupling strength. Further, our scheme can realize the quantum state transfer between photonic state and magnonic state by changing the amplitude of the intracell hopping. With a numerical simulation, we quantitatively show that the photonic, magnonic and magnon-to-photon state transfers can be achieved with high fidelity in the cavity-magnon lattice. Spectacularly, the three different types of quantum state transfer schemes can be even transformed to each other in a controllable fashion. This system provides a novel way of realizing quantum state transfer and can be implemented in quantum computing platforms.
Universal fidelity reduction of quantum operations from weak dissipation
Creators: name: Abad, Tahereh
name: Fernández-Pendás, Jorge
name: Kockum, Anton Frisk
name: Johansson, Göran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum information processing is in real systems often limited by dissipation, stemming from remaining uncontrolled interaction with microscopic degrees of freedom. Given recent experimental progress, we consider weak dissipation, resulting in a small error probability per operation. Here, we find a simple formula for the fidelity reduction of any desired quantum operation. Interestingly, this reduction is independent of the specific operation; it depends only on the operation time and the dissipation. Using our formula, we investigate the situation where dissipation in different parts of the system have correlations, which is detrimental for the successful application of quantum error correction. Surprisingly, we find that a large class of correlations gives the same fidelity reduction as uncorrelated dissipation of similar strength.
description: 5+4 pages
Uniformly accelerated observer in a thermal bath
Creators: name: Kolekar, Sanved
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the quantum field aspects in flat spacetime for an uniformly accelerated observer moving in a thermal bath. In particular, we obtain an exact closed expression of the reduced density matrix for an uniformly accelerated observer with acceleration $a = 2πT$ when the state of the quantum field is a thermal bath at temperature $T^\prime$. We find that the density matrix has a simple form with an effective partition function $Z$ being a product, $Z = Z_T Z_{T^\prime}$, of two thermal partition functions corresponding to temperatures $T$ and $T^\prime$ and hence is not thermal, even when $T = T^\prime$. We show that, even though the partition function has a product structure, the two thermal baths are, in fact, interacting systems; although in the high frequency limit $ω_k \gg T$ and $ω_k \gg T^\prime$, the interactions are found to become sub-dominant. We further demonstrate that the resulting spectrum of the Rindler particles can be interpreted in terms of spontaneous and stimulated emission due to the background thermal bath. The density matrix is also found to be symmetric in the acceleration temperature $T$ and the thermal bath temperature $T^\prime$ indicating that thermodynamic experiments alone cannot distinguish between the thermal effects due to $T$ and those due to $T^\prime$. The entanglement entropy associated with the reduced density matrix (with the background contribution of the Davies-Unruh bath removed) is shown to satisfy, in the $ω_k \gg T^\prime$ limit, a first law of thermodynamics relation of the form $T δS = δE$ where $δE$ is the difference in the energies corresponding to the reduced density matrix and the background Davies-Unruh bath. The implications are discussed.
description: 16 pages, no figure
Schistosomatidae Poche 1907
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Diplostomida
Schistosomatidae

description: Family Schistosomatidae Poche, 1907   Dendritobilharzia Skrjabin & Zakharow, 1920 Dendritobilharzia rionegrensis Martorelli, 1981 Host: Fulica rufifrons Philippi & Landbeck. Site of infection: mesenteric veins.
Locality: Pellegrini Lake, Río Negro Province. Reference: Martorelli (1981).
 Ornithobilharzia Odhner, 1912
 Ornithobilharzia canaliculata (Rudolphi, 1849) Odhner, 1912 Hosts: Larus dominicanus Lichtenstein, L. maculipennis Lichtenstein. Site of infection: vascular system.
Locality: San Carlos de Bariloche, Río Negro Province. Reference: Szidat (1964).
description: Published as part of Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, pp. 1-36 in Zootaxa 1403 on pages 19-20, DOI: 10.5281/zenodo.273687
Investigación Científica en Turismo: La experiencia Ibérica
Creators: name: Sánchez, Alfonso Vargas
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: En este trabajo se realiza balance, desde una perspectiva ibérica, de la evolución de la producción científica en turismo, en concreto durante lo que llevamos de siglo. En estos años, la investigación en este campo ha despertado definitivamente en ambos países, aun reconociendo el carácter tardío de este esfuerzo de acompañar el desarrollo de un sector de importancia capital para ambas economías desde la generación de conocimiento. A tal fin, se analizan los datos que aporta la base de datos ISI Web of Science.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)
Looking at QED with Dyson-Schwinger equations: basic equations, Ward-Takahashi identities and the two-photon-two-fermion irreducible vertex
Creators: name: Oliveira, Orlando
name: Macedo, Helena Lessa
name: Terin, Rodrigo Carmo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A minimal truncated set of the integral Dyson-Schwinger equations, in Minkowski spacetime, that allows to explore QED beyond its perturbative solution is derived for general linear covariant gauges. The minimal set includes the equations for the fermion and photon propagators, the photon-fermion vertex, and the two-photon-two-fermion one-particle-irreducible diagram. If the first three equations are exact, to build a closed set of equations, the two-photon-two-fermion equation is truncated ignoring the contribution of Green functions with large number of external legs. It is shown that the truncated equation for the two-photon-two-fermion vertex reproduces the lowest-order perturbative result in the limit of the small coupling constant. Furthermore, this equation allows to define an iterative procedure to compute higher order corrections in the coupling constant. The Ward-Takahashi identity for the two-photon-two-fermion irreducible vertex is derived and solved in the soft photon limit, where one of the photon momenta vanish, in the low photon momenta limit and for general kinematics. The solution of the Ward-Takahashi identity determines the longitudinal component of the two-photon-two-fermion irreducible vertex, while it is proposed to use the Dyson-Schwinger equation to determine the transverse part of this irreducible diagram. The two-photon-two-fermion DSE is solved in heavy fermion limit, considering a simplified version of the QED vertices. The contribution of this irreducible vertex to a low-energy effective photon-fermion vertex is discussed and the fermionic operators that are generated are computed in terms of the fermion propagator functions.
description: Version accepted for publication in Few Body Syst
Turismo de Base Natural – um instrumento de apoio à Conservação de Áreas Húmidas?
Creators: name: Martins, Filomena Cardoso
name: Albuquerque, Helena Cruz
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2013

description: O turismo é um dos fenómenos económicos e sociais com maior impacte nos nossos tempos. Desde sempre os turistas procuraram conciliar o seu tempo livre com o usufruto e exploração de ambientes diferentes e variados, tanto do ponto de vista biofísico como sociocultural. Neste sentido poderemos considerar como uma constante a interação entre turismo e ambiente. No entanto, reflexo da evolução social relativamente às questões ambientais, os turistas tornam-se cada vez mais exigentes, em termos da qualidade ambiental da oferta turística. Em termos de pesquisa tem-se tornado focal a interação entre o turismo, enquanto atividade económica, o ambiente e o desenvolvimento sustentável. Neste artigo pretende-se identificar a evolução desta interação, focando-nos na emergência de formas alternativas de desenvolvimento de atividades turísticas, à luz do paradigma do desenvolvimento sustentável, nomeadamente em áreas húmidas costeiras, como é o caso da Ria de Aveiro.
description: Revista Turismo & Desenvolvimento, n.º 20 (2013)