cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Diagnosing Ensemble Few-Shot Classifiers
Creators: name: Yang, Weikai
name: Ye, Xi
name: Zhang, Xingxing
name: Xiao, Lanxi
name: Xia, Jiazhi
name: Wang, Zhongyuan
name: Zhu, Jun
name: Pfister, Hanspeter
name: Liu, Shixia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The base learners and labeled samples (shots) in an ensemble few-shot classifier greatly affect the model performance. When the performance is not satisfactory, it is usually difficult to understand the underlying causes and make improvements. To tackle this issue, we propose a visual analysis method, FSLDiagnotor. Given a set of base learners and a collection of samples with a few shots, we consider two problems: 1) finding a subset of base learners that well predict the sample collections; and 2) replacing the low-quality shots with more representative ones to adequately represent the sample collections. We formulate both problems as sparse subset selection and develop two selection algorithms to recommend appropriate learners and shots, respectively. A matrix visualization and a scatterplot are combined to explain the recommended learners and shots in context and facilitate users in adjusting them. Based on the adjustment, the algorithm updates the recommendation results for another round of improvement. Two case studies are conducted to demonstrate that FSLDiagnotor helps build a few-shot classifier efficiently and increases the accuracy by 12% and 21%, respectively.
description: Accepted in IEEE TVCG
A low complexity approach of combining cooperative diversity and multiuser diversity in multiuser cooperative networks
Creators: name: Lv, Tiejun
name: Zhang, Zhang
name: Yang, Shaoshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we investigate the scheduling scheme to combine cooperative diversity (CD) and multiuser diversity (MUD) in multiuser cooperative networks under the time resource allocation (TRA) framework in which the whole transmission is divided into two phases: the broadcast phase and the relay phase. The broadcast phase is for direct transmission whereas the relay phase is for relay transmission. Based on this TRA framework, a user selection based low complexity relay protocol (US-LCRP) is proposed to combine CD and MUD. In each time slot (TS) of the broadcast phase, a "best" user is selected for transmission in order to obtain MUD. In the relay phase, the relays forward the messages of some specific users in a fixed order and then invoke the limited feedback information to achieve CD. We demonstrate that the diversity-multiplexing tradeoff (DMT) of the US-LCRP is superior to that of the existing schemes, where more TSs are allocated for direct transmission in order to jointly exploit CD and MUD. Our analytical and numerical results show that the US-LCRP constitutes a more efficient resource utilization approach than the existing schemes. Additionally, the US-LCRP can be implemented with low complexity because only the direct links' channel state information (CSI) is estimated during the whole transmission.
description: 10 pages, 7 figures, accepted by IEEE Transactions on Signal Processing, to be fully published in Nov. or Dec. 2013
Território Rural e Percepções sobre Turismo: Leituras da situação de pequenos produtores – RS/Brasil
Creators: name: Santos, Nara Rejane Zamberlan Dos
name: Rocha, Jefferson Marçal
name: Ceretta, Caroline Ciliane
name: Jasper, Juliana Rose
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: A partir da seleção de doze propriedades situadas na região da Quarta Colônia de Colonização Italiana, no estado do Rio Grande do Sul, Brasil, desenvolveu-se a presente pesquisa cujo objetivo foi constatar a potencialidade destas propriedades rurais e verificar o interesse e o conhecimento dos proprietários quanto à possibilidade de implantação de atividades de turismo rural. Os critérios para a escolha das propriedades foram a área máxima, o retorno financeiro proveniente das atividades desenvolvidas e a presença de duas gerações de produtores. Foram aplicados três instrumentos de recolha de dados, dois estruturados e um com perguntas abertas. Os resultados demonstraram a potencialidade das propriedades, o interesse dos proprietários em ampliar seus ganhos, mas também evidenciou o temor dos agricultores mais idosos no trato com o público.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
O Turismo Religioso no Noroeste de Portugal: as atividades económicas dos principais santuários na sua relação com o território envolvente
Creators: name: Silva, João Luís Figueiredo Da
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: O sector do turismo em geral, e em particular as novas formas de fazer e pensar o turismo, a partir das quais se aproveitam os recursos culturais e naturais de maneira a contribuir para o desenvolvimento do território, destacando-se neste caso o turismo religioso, têm sido nos últimos anos alvo da atenção de diversos de agentes económicos, políticos e científicos. O Noroeste de Portugal, pela existência de um forte conjunto de estruturas e tradições de ordem religiosa, afirma-se como uma região onde o turismo religioso poderá contribuir para alcançar esse objetivo. Este trabalho de investigação pretende compreender a importância do turismo religioso no contexto das múltiplas relações existentes nos principais santuários do Noroeste de Portugal, permitindo assim oferecer um contributo para uma melhor compreensão das dinâmicas que se verificam na relação dos santuários com o território, tendo como base as diferentes atividades que se desenrolam nos, e a partir dos, santuários. Depois de selecionados os principais santuários, foi aplicado um inquérito por questionário aos agentes económicos que atuam no espaço dos santuários, assim como entrevistas aos diversos agentes institucionais. A informação recolhida permitiu obter um conjunto de informação detalhada sobre cada santuário, destacando-se o conhecimento acerca das características das atividades económicas existentes, o conhecimento sobre as formas de gestão e organização, assim como sobre as relações institucionais entre os diferentes agentes económicos, políticos e religiosos. Como resultado da análise efetuada, ficam evidenciadas as características das atividades económicas, as quais representam um impacte socioeconómico reduzido nas populações locais, tanto ao nível da criação de emprego e dinamização dos produtos locais, como no fortalecimento da economia local e regional, sobressaindo também a reduzida articulação entre os diversos agentes que intervêm nos santuários, não sendo clara a existência de uma estratégia conjunta que possa potenciar os recursos existentes em prol de uma estratégia de desenvolvimento para o território envolvente.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
Development of a cosmic ray oriented trigger for the fluorescence telescope on EUSO-SPB2
Creators: name: Filippatos, George
name: Battisti, Matteo
name: Belov, Alexander
name: Bertaina, Mario
name: Bisconti, Francesca
name: Eser, Johannes
name: Mignone, Marco
name: Sarazin, Fred
name: Wiencke, Lawrence
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2), in preparation, aims to make the first observations of Ultra-High Energy Cosmic Rays (UHECRs) from near space using optical techniques. EUSO-SPB2 will prototype instrumentation for future satellite-based missions, including the Probe of Extreme Multi-Messenger Astrophysics (POEMMA) and K-EUSO. The payload will consist of two telescopes. The first is a Cherenkov telescope (CT) being developed to quantify the background for future below-the-limb very high energy (E>10 PeV) astrophysical neutrino observations, and the second is a fluorescence telescope (FT) being developed for detection of UHECRs. The FT will consist of a Schmidt telescope, and a 6192 pixel ultraviolet camera with an integration time of 1.05 microseconds. The first step in the data acquisition process for the FT is a hardware level trigger in order to decide which data to record. In order to maximize the number of UHECR induced extensive air showers (EASs) which can be detected, a novel trigger algorithm has been developed based on the intricacies and limitations of the detector. The expected performance of the trigger has been characterized by simulations and, pending hardware verification, shows that EUSO-SPB2 is well positioned to attempt the first near-space observation of UHECRs via optical techniques.
Dispersive Shock Waves in Viscously Deformable Media
Creators: name: Lowman, Nicholas K.
name: Hoefer, Mark A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The viscously dominated, low Reynolds' number dynamics of multi-phase, compacting media can lead to nonlinear, dissipationless/dispersive behavior when viewed appropriately. In these systems, nonlinear self-steepening competes with wave dispersion, giving rise to dispersive shock waves (DSWs). Example systems considered here include magma migration through the mantle as well as the buoyant ascent of a low density fluid through a viscously deformable conduit. These flows are modeled by a third-order, degenerate, dispersive, nonlinear wave equation for the porosity (magma volume fraction) or cross-sectional area, respectively. Whitham averaging theory for step initial conditions is used to compute analytical, closed form predictions for the DSW speeds and the leading edge amplitude in terms of the constitutive parameters and initial jump height. Novel physical behaviors are identified including backflow and DSW implosion for initial jumps sufficient to cause gradient catastrophe in the Whitham modulation equations. Theoretical predictions are shown to be in excellent agreement with long-time numerical simulations for the case of small to moderate amplitude DSWs. Verifiable criteria identifying the breakdown of this modulation theory in the large jump regime, applicable to a wide class of DSW problems, are presented.
description: 32 pages, 10 figures
Review of Recent Results from the RHIC Beam Energy Scan
Creators: name: Kumar, Lokesh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We review recent results from the RHIC beam energy scan (BES) program, aimed to study the Quantum Chromodynamics (QCD) phase diagram. The main goals are to search for the possible phase boundary, softening of equation of state or first order phase transition, and possible critical point. Phase-I of the BES program has recently concluded with data collection for Au+Au collisions at center-of-mass energies ($\sqrt{s_{NN}}$) of 7.7, 11.5, 19.6, 27, and 39 GeV. Several interesting results are observed for these lower energies where the net-baryon density is high at the mid-rapidity. These results indicate that the matter formed at lower energies (7.7 and 11.5 GeV) is hadron dominated and might not have undergone a phase transition. In addition, the centrality dependence of freeze-out parameters is observed for the first time at lower energies, slope of directed flow for (net)-protons measured versus rapidity shows an interesting behavior at lower energies, and higher moments of net-proton show deviation from Skellam expectations at lower energies. An outlook for the future BES Phase-II program is presented and efforts for the detailed study of QCD phase diagram are discussed.
description: 16 pages, 12 figures. Review article, accepted for publication in Modern Physics Letters A
As trilhas do Cavalo Marinho e do Peixe-Boi na Rota das Emoções: Uma alternativa de turismo educativo na Área de Proteção Ambiental (APA) Delta do Parnaíba, Piauí, Brasil
Creators: name: Putrick, Simone Cristina
name: Cury, Mauro José Ferreira
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: O artigo apresenta e reforça a importância da pesquisa estimulada pelo turismo científico em áreas naturais com a presença de comunidades carentes. Aponta os resultados de uma proposta de um modelo de desenvolvimento da atividade turística que valorize, democratize o acesso à produção do conhecimento de pesquisadores, docentes e discentes. O objetivo deste artigo passa por analisar as Trilhas do Cavalo Marinho e do Peixe-Boi na Rota das Emoções como uma alternativa de turismo educativo na Área de Proteção Ambiental (APA) Delta do Parnaíba, Piauí, Brasil, e como um elemento de planejamento espacial e possível estratégia de desenvolvimento e sustentabilidade para as comunidades locais pela visitação turística. A metodologia parte de um estudo empírico, com base em análises qualitativas e quantitativas sobre a comunidade local; e a oferta natural que compõe este estudo. O desenvolvimento deste envolveu a Universidade Federal do Piauí – UFPI, Curso de Turismo, as comunidades locais de Barra Grande, na Rota das Emoções entre os Parques Nacionais de Jericoacoara (CE) e Lençóis Maranhenses (MA). Este se estrutura com as bases teóricas dos recursos naturais, o ecoturismo em áreas naturais e a presença de comunidades locais; os aportes teóricos e metodológicos nas Trilhas; o desenvolvimento do projeto; e resultados alcançados.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
FEATURES OF TEACHING LISTENING TO FOREIGN LANGUAGE
Creators: name: Zamilov, Farkhod
Publisher: name: Zenodo
Year: 2023

description: In the process of working on this topic, the following tasks were set: studying and analyzing the literature on this issue, identifying the characteristics of students at the initial stage of teaching a foreign language, studying and selecting the most effective methods and techniques for teaching vocabulary, phonetics, and grammar at the initial stage. The object of this work is the process of teaching a foreign language to younger students.
Selective Control of Conductance Modes in Multi-terminal Josephson Junctions
Creators: name: Graziano, Gino V.
name: Gupta, Mohit
name: Pendharkar, Mihir
name: Dong, Jason T.
name: Dempsey, Connor P.
name: Palmstrøm, Chris
name: Pribiag, Vlad S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work we employ a quantum point contact geometry in three-terminal Josephson devices. We demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.
description: 15 pages, 4 figures
Laurent+Pietarinen Partial Wave Analysis
Creators: name: Svarc, A.
name: Workman, R. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new energy-dependent fit strategy, independent of any specific microscopic theory, is applied to kaon photoproduction data with center-of-mass energies ranging from 1625 MeV to 2296 MeV. Experimental data are fitted in terms of a modified Laurent expansion (Laurent+Pietarinen expansion) which previously has been successfully applied to multipoles. The present aim is to extract resonance pole parameters directly from the data, rather than from sets of multipoles. A constrained single-energy fit is then used to search for missing structures. In this proof-of-principle study, the data are well-described by the initial L+P fit, and it is shown that only a moderate amount of structure, mostly in higher multipoles, is missing from the original fit. Problems due to an unmeasurable overall phase, plaguing single-channel multipole analyses, are mitigated by implementing a form of phase limitation, fixing the initial values of fit parameters using a multi-channel analysis.
description: 23 pages, 12 figures
Internal Motion of 6.7-GHz Methanol Masers in H II Region S269
Creators: name: Sawada-Satoh, Satoko
name: Fujisawa, Kenta
name: Sugiyama, Koichiro
name: Wajima, Kiyoaki
name: Honma, Mareki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first internal motion measurement of the 6.7-GHz methanol maser within S269, a small HII region in the outer Galaxy, which was carried out in 2006 and 2011 using the Japanese VLBI Network (JVN). Several maser groups and weak isolated spots were detected in an area spanning by ~200 mas (1000 AU). Three remarkable maser groups are aligned at a position angle of 80 degree. Two of three maser groups were also detected by a previous observation in 1998, which allowed us to study a long-term position variation of maser spots from 1998 to 2011. The angular separation between the two groups increased ~10 mas, which corresponds to an expansion velocity of ~10 km s^{-1}. Some velocity gradient (~10^{-2} km s^{-1} mas^{-1}) in the overall distribution was found. The internal motion between the maser groups support the hypothesis that the methanol masers in S269 could trace a bipolar outflow.
description: 8 pages, 6 figures, accepted for publication in PASJ
Conhecimento e práticas do Turismo Cemiterial: um mercado emergente no setor
Creators: name: Abranja, Nuno Alexandre
name: Alcântara, Ana Afonso
name: Marques, Ana Patrícia
name: Ferreira, Ricardo Viseu
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Em pleno século XXI o turismo ganhou o estatuto de maior atividade económica do mundo. Além de uma atividade economicamente poderosa o turismo é, também, um fator importante de desenvolvimento social, na medida em que tem o poder para aprimorar a qualidade de vida das sociedades. Carateriza-se o Turismo Cemiterial como sendo os roteiros de arte cemiterial que conjugam a relação da produção artística com as crenças sociais e religiosas da época. O presente artigo representa um contributo oportuno para uma reflexão sobre um acervo de estatuário e ornamentos fúnebres, que pode ser visto em túmulos de personagens notáveis da região e outros anónimos, que se evidenciam no consumo do Turismo Cemiterial, que para além da sua importância são de extrema atualidade. A análise pressupõe uma moldura teórica composta por uma conceptualização, evolução e caraterização do objeto de estudo e uma segunda parte que consiste num levantamento exaustivo da prática do Turismo Cemiterial, assim como de todos os players empresariais e associativistas nacionais, motivações, o seu enquadramento nas tendências turísticas, os mercados emissores e Portugal como destino. Nesta componente empírica aferir-se-á, também, através da aplicação de um inquérito a uma amostra composta por indivíduos portugueses, o grau de conhecimento e aceitação deste produto na oferta turística nacional.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
title: Was sind die schlechten Zeiten Wie wirds uns noch ergehen!; [1848?]
title: Die Preisen müßen fallen Soll Deutschland fortbestehen! Tßachako billig in Ueberfluß! Nichts Helme die sind gegen Schuß
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Karikatur über ein Streitgespräch zwischen einem Schmied und einem Bürgerlichen auf einem Marktplatz
SHREC 2022: Protein-ligand binding site recognition
Creators: name: Gagliardi, Luca
name: Raffo, Andrea
name: Fugacci, Ulderico
name: Biasotti, Silvia
name: Rocchia, Walter
name: Huang, Hao
name: Amor, Boulbaba Ben
name: Fang, Yi
name: Zhang, Yuanyuan
name: Wang, Xiao
name: Christoffer, Charles
name: Kihara, Daisuke
name: Axenopoulos, Apostolos
name: Mylonas, Stelios
name: Daras, Petros
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: This paper presents the methods that have participated in the SHREC 2022 contest on protein-ligand binding site recognition. The prediction of protein-ligand binding regions is an active research domain in computational biophysics and structural biology and plays a relevant role for molecular docking and drug design. The goal of the contest is to assess the effectiveness of computational methods in recognizing ligand binding sites in a protein based on its geometrical structure. Performances of the segmentation algorithms are analyzed according to two evaluation scores describing the capacity of a putative pocket to contact a ligand and to pinpoint the correct binding region. Despite some methods perform remarkably, we show that simple non-machine-learning approaches remain very competitive against data-driven algorithms. In general, the task of pocket detection remains a challenging learning problem which suffers of intrinsic difficulties due to the lack of negative examples (data imbalance problem).
A paisagem como atrativo para o visitante do Vale dos Vinhedos, Sul do Brasil
Creators: name: Lavandoski, Joice
name: Lanzer, Rosane Maria
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: A paisagem é um fator de atratividade turística, principalmente quando é composta por elementos que não fazem parte do cotidiano das pessoas. Estes elementos podem diferenciar-se daqueles encontrados nos grandes centros urbanos, como é o caso de uma paisagem rural, e podem servir de motivação ao turismo. O Vale dos Vinhedos, localizado ao sul do Brasil, é o principal destino de enoturismo e objeto de estudo neste artigo. O objetivo é analisar a relevância da paisagem rural do Vale dos Vinhedos para o visitante como um atrativo associado ao vinho. Por meio de uma pesquisa exploratória, de caráter qualitativo-quantitativo, realizaram-se entrevistas aos visitantes numa das principais vinícolas deste roteiro enoturístico. Os resultados permitiram identificar o perfil do visitante no Vale dos Vinhedos, relacioná-lo com suas motivações e revelaram que elementos presentes na paisagem despertaram a sua atenção. Foi, assim, confirmada a importância da paisagem como um atrativo turístico associado ao vinho.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
The Boulware-Deser mode in Zwei-Dreibein gravity
Creators: name: Bañados, Máximo
name: Deffayet, Cedric
name: Pino, Miguel
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Massive gravity in three dimensions accepts several different formulations. Recently, the 3-dimensional bigravity dRGT model in first order form, Zwei-Dreibein gravity, was considered by Bergshoeff {\it et al.} and it was argued that the Boulware-Deser mode is killed by extra constraints. We revisit this assertion and conclude that there are sectors on the space of initial conditions, or subsets of the most general such model, where this mode is absent. But, generically, the theory does carry 3 degrees of freedom and thus the Boulware-Deser mode is still active. Our results also sheds light on the equivalence between metric and vierbein formulations of dRGT model.
description: 4 pages
SHREC 2022: Fitting and recognition of simple geometric primitives on point clouds
Creators: name: Romanengo, Chiara
name: Raffo, Andrea
name: Biasotti, Silvia
name: Falcidieno, Bianca
name: Fotis, Vlassis
name: Romanelis, Ioannis
name: Psatha, Eleftheria
name: Moustakas, Konstantinos
name: Sipiran, Ivan
name: Nguyen, Quang-Thuc
name: Chu, Chi-Bien
name: Nguyen-Ngoc, Khoi-Nguyen
name: Vo, Dinh-Khoi
name: To, Tuan-An
name: Nguyen, Nham-Tan
name: Le-Pham, Nhat-Quynh
name: Nguyen, Hai-Dang
name: Tran, Minh-Triet
name: Qie, Yifan
name: Anwer, Nabil
Publisher: name: arXiv
Year: 2022
Subjects: subject: Graphics (cs.GR)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.1.2; I.3.5; I.5.4
subject: 68U05, 68U07, 65D18, 65D17

description: This paper presents the methods that have participated in the SHREC 2022 track on the fitting and recognition of simple geometric primitives on point clouds. As simple primitives we mean the classical surface primitives derived from constructive solid geometry, i.e., planes, spheres, cylinders, cones and tori. The aim of the track is to evaluate the quality of automatic algorithms for fitting and recognising geometric primitives on point clouds. Specifically, the goal is to identify, for each point cloud, its primitive type and some geometric descriptors. For this purpose, we created a synthetic dataset, divided into a training set and a test set, containing segments perturbed with different kinds of point cloud artifacts. Among the six participants to this track, two are based on direct methods, while four are either fully based on deep learning or combine direct and neural approaches. The performance of the methods is evaluated using various classification and approximation measures.
O papel da Paisagem na experiência de Enoturismo – o caso de Favaios1
Creators: name: Silva, Ana Lavrador
name: Kastenholz, Elisabeth
name: Lima, Joana
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: As regiões vitivinícolas têm suscitado um interesse crescente como espaços de lazer e turismo, em consequência das recentes tendências de uma procura turística especializada, como é o caso do enoturismo. No entanto, apesar de a literatura acerca do enoturismo ter aumentado, continua a ser uma área relativamente pouco estudada, especialmente numa perspetiva de compreensão do papel da paisagem na experiência turística vivida. Neste contexto, o presente trabalho tem como objetivo analisar a natureza da experiência de enoturismo, do ponto de vista dos visitantes, confrontando-a com a visão de produtores e agentes de planeamento. Na prossecução deste objetivo optou-se por uma abordagem metodológica qualitativa, com entrevistas aos visitantes e agentes de planeamento da região do Douro, visando a compreensão da importância da paisagem: (i) nas motivações para realizar a visita; (ii) na imagem do destino; (iii) na promoção turística da região; e (iv) na satisfação e avaliação da visita. Os resultados das entrevistas efetuadas foram complementados com a comparação com os do estudo de Lavrador Silva (2008), no qual se avaliaram opiniões da população e produtores de vinho sobre o papel da paisagem na promoção turística e dos vinhos da Região Demarcada do Porto/Douro (RDD). Os resultados obtidos destacam a relevância da paisagem na experiência turística vivida em Favaios, aldeia pertencente à RDD, cuja paisagem foi considerada “única”, “arrasadora” e “deslumbrante”, adjetivos aliados a emoções fortes e representativos de uma importante dimensão estética/visual da experiência, componente muito apreciada e valorizada pelos visitantes e pelos restantes stakeholders.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
Magneto-Photoluminescence of InAs/InGaAs/InAlAs quantum well structures
Creators: name: Terent'ev, Ya. V.
name: Danilov, S. N.
name: Loher, J.
name: Schuh, D.
name: Bougeard, D.
name: Weiss, D.
name: Durnev, M. V.
name: Tarasenko, S. A.
name: Mukhin, M. S.
name: Ivanov, S. V.
name: Ganichev, S. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Photoluminescence (PL) and highly circularly-polarized magneto-PL (up to 50% at 6 T) from two-step bandgap InAs/InGaAs/InAlAs quantum wells (QWs) are studied. Bright PL is observed up to room temperature, indicating a high quantum efficiency of the radiative recombination in these QW. The sign of the circular polarization indicates that it stems from the spin polarization of heavy holes caused by the Zeeman effect. Although in magnetic field the PL line are strongly circularly polarized, no energy shift between the counter-polarized PL lines was observed. The results suggest that the electron and the hole g-factor to be of the same sign and close magnitudes.
Consensus between Epistemic Agents is Difficult
Creators: name: Sowinski, Damian R.
name: Carroll-Nellenback, Jonathan
name: DeSilva, Jeremy M.
name: Frank, Adam
name: Ghoshal, Gourab
name: Gleiser, Marcelo
name: Seldon, Hari
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Information Theory (cs.IT)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: We introduce an epistemic information measure between two data streams, that we term $influence$. Closely related to transfer entropy, the measure must be estimated by epistemic agents with finite memory resources via sampling accessible data streams. We show that even under ideal conditions, epistemic agents using slightly different sampling strategies might not achieve consensus in their conclusions about which data stream is influencing which. As an illustration, we examine a real world data stream where different sampling strategies result in contradictory conclusions, explaining why some politically charged topics might exist due to purely epistemic reasons irrespective of the actual ontology of the world.
description: 5 figures
Cramér distance and discretizations of circle expanding maps I: theory
Creators: name: Guihéneuf, Pierre-Antoine
name: Monge, Maurizio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper is aimed to study the ergodic short-term behaviour of discretizations of circle expanding maps. More precisely, we prove some asymptotics of the distance between the $t$-th iterate of Lebesgue measure by the dynamics $f$ and the $t$-th iterate of the uniform measure on the grid of order $N$ by the discretization on this grid, when $t$ is fixed and the order $N$ goes to infinity. This is done under some explicit genericity hypotheses on the dynamics, and the distance between measures is measured by the mean of \emph{Cramér} distance. The proof is based on a study of the corresponding linearized problem, where the problem is translated into terms of equirepartition on tori of dimension exponential in $t$. A numerical study associated to this work is presented in arXiv:2206.08000 [math.DS].
description: 33 pages, 5 figures
Zur Exegese der Perikope vom "Scherflein der Witwe" (Mk. 12, 41-44)
Creators: name: Strothotte, Günter
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 7 (1955): Jahrbuch des Martin-Luther-Bundes, Band 7
Poeciliidae
Creators: name: Cremonte, Florencia
name: Drago, Fabiana B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cyprinodontiformes
Poeciliidae

description: Family Poeciliidae   Cnesterodon decemmaculatus (Jennyns)
 Apharyngostrigea simplex (Johnston, 1904)
 Ascocotyle (Ascocotyle) secunda Ostrowski de Núñez, 2001 Ascocotyle (Ascocotyle) tenuicollis Price, 1935
 Ascocotyle (Ascocotyle) tertia Ostrowski de Núñez, 2001 Ascocotyle (Leighia) hadra Ostrowski de Núñez, 1992 Ascocotyle (Phagicola) angeloi Travassos, 1928
 Ascocotyle (Phagicola) angrense Travassos, 1916 Ascocotyle (Phagicola) diminuta (Stunkard & Haviland, 1924) Austrodiplostomum mordax Szidat & Nani, 1951 Echinochasmus talaensis Martorelli, 1985 Posthodiplostomum nanum Dubois, 1937 Pygidiopsis australis Ostrowski de Núñez, 1996 Pygidiopsis crassus Ostrowski de Núñez, 1995 Pygidiopsis sp.
 Phalloceros caudimaculatus (Hensel)
 Ascocotyle (Ascocotyle) tenuicollis Price, 1935 Ascocotyle (Phagicola) angrense Travassos, 1916 Austrodiplostomum mordax Szidat & Nani, 1951 Posthodiplostomum nanum Dubois, 1937 Pygidiopsis sp.
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 31-32, DOI: 10.5281/zenodo.273687
Classical Splitting of Parametrized Quantum Circuits
Creators: name: Tüysüz, Cenk
name: Clemente, Giuseppe
name: Crippa, Arianna
name: Hartung, Tobias
name: Kühn, Stefan
name: Jansen, Karl
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Barren plateaus appear to be a major obstacle to using variational quantum algorithms to simulate large-scale quantum systems or replace traditional machine learning algorithms. They can be caused by multiple factors such as expressivity, entanglement, locality of observables, or even hardware noise. We propose classical splitting of ansätze or parametrized quantum circuits to avoid barren plateaus. Classical splitting is realized by splitting an $N$ qubit ansatz to multiple ansätze that consists of $\mathcal{O}(\log N)$ qubits. We show that such an ansatz can be used to avoid barren plateaus. We support our results with numerical experiments and perform binary classification on classical and quantum datasets. Then, we propose an extension of the ansatz that is compatible with variational quantum simulations. Finally, we discuss a speed-up for gradient-based optimization and hardware implementation, robustness against noise and parallelization, making classical splitting an ideal tool for noisy intermediate scale quantum (NISQ) applications.
description: main text 11 pages, 5 figures; supplementary material 10 pages, 11 figures
Effects of the kinetic energy in heat for overdamped systems
Creators: name: Paraguassú, Pedro V.
name: Aquino, Rui
name: Defaveri, Lucianno
name: Morgado, Welles A. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the derivation of the thermodynamics of overdamped systems, one ignores the kinetic energy contribution, since the velocity is a slow variable. In this paper, we show that the kinetic energy needs to be present in the calculation of the heat distribution to have a correct correspondence between the underdamped and overdamped cases, meaning that the velocity can not be fully ignored in the thermodynamics of these systems. We do this by investigating in detail the effect of the kinetic energy for three different systems, the harmonic potential, the logarithm potential, and an arbitrary non-isothermal process.
description: 10 pages, 5 figures
Trilhos turísticos na Gastronomia
Creators: name: Santos, José Manuel Figueiredo
name: Henriques, Cláudia H. N.
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Neste artigo, promove-se a interlocução analítica com a recetividade da gastronomia algarvia, por parte dos neorresidentes provenientes de EU a 15. Não se trata de esboçar uma perspetiva fisicalista que acompanha tantas versões correntes de análise do fenómeno, mas de, neste património intangível, perceber um quadro fenomenológico implicado como cadinho cultural generativo de atração turística dos espaços, no que o fenómeno turístico é divisado como prática intercultural. E se o turismo se alimenta de ideo-culturas, faz todo o sentido pensar que a gastronomia esteja numa visão estruturada da coisa turística, expandindo-a numa “espacialidade social” implicada no esbatimento de fronteiras culturais entre povos. O artigo assenta numa entrevista estruturada, dirigida a um conjunto de 42 associações da região algarvia, maioritariamente compostas por neorresidentes, e o respetivo tratamento através de análise de conteúdo. Para isso, os autores serviram-se de um subconjunto de dados empíricos imbricados num projeto intitulado “culturas turísticas dos neorresidentes em contexto algarvio”, apoiado pela FCT, que preconiza uma dimensão temporal de análise da experiencia transmigratória dos referidos indivíduos, recuada aos anos 80. Os resultados mais expressivos sugerem uma associação entre o papel da gastronomia local como atributo cultural positivo, somado ao facto de ela desempenhar um papel facilitador da incorporação dos indivíduos num novo espaço residencial, ainda que não revestido de uma centralidade invejável. Nele plasma-se a necessidade de uma “intermediação cultural” mais expressiva no domínio, sob pena de se deixar em falha um potencial agregador de uma mais-valia turística.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
Enoturismo de altitude de Santa Catarina: um estudo buscando identificar os atributos competitivos das empresas vinícolas
Creators: name: Panceri, Carolina Pretto
name: Rossetto, Carlos Ricardo
name: Martins, Elvis Silveira-
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: A pesquisa concentrou-se na região vinícola de altitude do Meio Oeste do Estado de Santa Catarina, tendo em vista o número de vinícolas da região, as características paisagísticas singulares das áreas produtoras, bem como os novos parâmetros de articulação dos recursos disponíveis e as estratégias de competitividade utilizadas. As cinco vinícolas da região foram analisadas através de pesquisa quantitativa exploratória e descritiva, por meio de um questionário que investigou infraestrutura, destino turístico, políticas públicas, economia e sustentabilidade da região. Os resultados obtidos apontam que as vinícolas apresentam boas condições de infra-estrutura e os municípios oferecem diversos serviços também para a população visitante. Os destinos turísticos (vinícolas) possuem construções específicas para atendimento ao público e atrativos diversificados como visitação em língua estrangeira e paisagens cênicas. Todas as empresas se preocupam com a sustentabilidade de seus negócios e atuam de forma consciente no que se refere ao meio ambiente. Na análise econômica percebemos o potencial de crescimento da atividade, pois o número de visitantes nas vinícolas é bem abaixo se comparado a outras regiões enoturísticas. Os resultados indicam limitação na área de políticas públicas, pois faltam planos específicos para o turismo e apoio aos destinos existentes.
description: Revista Turismo & Desenvolvimento, vol. 3 n.º 17/18 (2012)
Exploring ab initio machine synthesis of quantum circuits
Creators: name: Meister, Richard
name: Gustiani, Cica
name: Benjamin, Simon C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gate-level quantum circuits are often derived manually from higher level algorithms. While this suffices for small implementations and demonstrations, ultimately automatic circuit design will be required to realise complex algorithms using hardware-specific operations and connectivity. Here we explore methods for the ab initio creation of circuits within a machine, either a classical computer or a hybrid quantum-classical device. We consider a range of techniques including: methods for introducing new gate structures, optimisation of parameterised circuits and choices of cost functions, and efficient removal of low-value gates exploiting the quantum geometric tensor and other heuristics. Using these principles we tackle the tasks of automatic encoding of unitary processes and translation (recompilation) of a circuit from one form to another. Using emulated quantum computers with various noise-free gate sets we provide simple examples involving up to 10 qubits, corresponding to 20 qubits in the augmented space we use. Further applications of specific relevance to chemistry modelling are considered in a sister paper, 'Exploiting subspace constraints and ab initio variational methods for quantum chemistry'.
description: 17 pages, 10 figures
Low-complexity End-to-End Performance Optimization in MIMO Full-Duplex Relay Systems
Creators: name: Suraweera, Himal A.
name: Krikidis, Ioannis
name: Zheng, Gan
name: Yuen, Chau
name: Smith, Peter J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we deal with the deployment of full-duplex relaying in amplify-and-forward (AF) cooperative networks with multiple-antenna terminals. In contrast to previous studies, which focus on the spatial mitigation of the loopback interference (LI) at the relay node, a joint precoding/decoding design that maximizes the end-to-end (e2e) performance is investigated. The proposed precoding incorporates rank-1 zero-forcing (ZF) LI suppression at the relay node and is derived in closed-form by solving appropriate optimization problems. In order to further reduce system complexity, the antenna selection (AS) problem for full-duplex AF cooperative systems is discussed. We investigate different AS schemes to select a single transmit antenna at both the source and the relay, as well as a single receive antenna at both the relay and the destination. To facilitate comparison, exact outage probability expressions and asymptotic approximations of the proposed AS schemes are provided. In order to overcome zero-diversity effects associated with the AS operation, a simple power allocation scheme at the relay node is also investigated and its optimal value is analytically derived. Numerical and simulation results show that the joint ZF-based precoding significantly improves e2e performance, while AS schemes are efficient solutions for scenarios with strict computational constraints.
description: to appear in IEEE Transactions on Wireless Communications
Exploiting subspace constraints and ab initio variational methods for quantum chemistry
Creators: name: Gustiani, Cica
name: Meister, Richard
name: Benjamin, Simon C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Variational methods offer a highly promising route to exploiting quantum computers for chemistry tasks. Here we employ methods described in a sister paper to the present report, entitled ab initio machine synthesis of quantum circuits, in order to solve problems using adaptively evolving quantum circuits. Consistent with prior authors we find that this approach can outperform human-designed circuits such as the coupled-cluster or hardware-efficient ansätze, and we make comparisons for larger instances up to 14 qubits. Moreover we introduce a novel approach to constraining the circuit evolution in the physically relevant subspace, finding that this greatly improves performance and compactness of the circuits. We consider both static and dynamics properties of molecular systems. The emulation environments used is QuESTlink; all resources are open source and linked from this paper.
description: 8 pages, 8 figures, 8 pages of appendix, and 12 figures in the appendix
Final-state interaction in the process $e^{+}e^{-}\rightarrowΛ_{c}\barΛ_{c}$
Creators: name: Milstein, A. I.
name: Salnikov, S. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that the final-state interaction explains the nontrivial near-threshold energy dependence of the cross section of the process $e^{+}e^{-}\rightarrowΛ_{c}\barΛ_{c}$ observed by the Belle and BESIII collaborations. This energy dependence is the result of the mixture of $S$-wave and $D$-wave components of the $Λ_{c}\barΛ_{c}$ wave function due to a tensor interaction. The Coulomb potential is important only in the narrow energy region about a few MeV above the threshold of the process. It is shown that the widely used assumption that the impact of the Coulomb interaction on the cross sections of hadron production is reduced to the Sommerfeld-Gamow-Sakharov factor is not correct.
description: 9 pages, 1 figure
On the Capacity and Degrees of Freedom Regions of MIMO Interference Channels with Limited Receiver Cooperation
Creators: name: Ashraphijuo, Mehdi
name: Aggarwal, Vaneet
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper gives the approximate capacity region of a two-user MIMO interference channel with limited receiver cooperation, where the gap between the inner and outer bounds is in terms of the total number of receive antennas at the two receivers and is independent of the actual channel values. The approximate capacity region is then used to find the degrees of freedom region. For the special case of symmetric interference channels, we also find the amount of receiver cooperation in terms of the backhaul capacity beyond which the degrees of freedom do not improve. Further, the generalized degrees of freedom are found for MIMO interference channels with equal number of antennas at all nodes. It is shown that the generalized degrees of freedom improve gradually from a "W" curve to a "V" curve with increase in cooperation in terms of the backhaul capacity.
description: Submitted to IEEE Trans. Inf. Th., Aug 2013. arXiv admin note: text overlap with arXiv:1212.4902; and with arXiv:0911.2053 by other authors
Gestão sustentável da cadeia de abastecimento no turismo: Uma proposta baseada no turismo comunitário
Creators: name: Araújo, Arthur Filipe Barbosa De
name: Araújo, Medéia Veríssimo Silva De
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: O presente artigo realiza uma análise do conceito de gestão sustentável da cadeia de abastecimento aplicada à actividade turística, investigando a possibilidade de utilização do turismo comunitário como forma de inclusão dos princípios de sustentabilidade. Para a análise teórica, adota-se o conceito do sistema turístico, por representar uma esquematização da cadeia de abastecimento da actividade. De modo a demonstrar empiricamente tal conceito, apresentase o caso da Prainha do Canto Verde, localizada no estado do Ceará, Nordeste do Brasil. O exemplo abordado demonstra que o modelo de turismo comunitário é uma alternativa viável de adoção de parâmetros sustentáveis ao longo da cadeia de abastecimento do turismo. Tal se dá através do desenvolvimento de factores sociais, ambientais e económicos, de modo que a população local torna-se responsável por todas as fases da cadeia de abastecimento, bem como pelo processo decisório. Tal situação garante a minimização dos impactos naturais e sociais, bem como proporciona à população o acesso integral aos benefícios gerados pelo turismo.
description: Revista Turismo & Desenvolvimento, vol. 2 n.º 17/18 (2012)