cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simons Observatory: Broadband Metamaterial Anti-Reflection Cuttings for Large Aperture Alumina Optics
Creators: name: Golec, Joseph E.
name: Sutariya, Shreya
name: Jackson, Rebecca
name: Zimmerman, Jerry
name: Dicker, Simon R.
name: Iuliano, Jeffrey
name: McMahon, Jeff
name: Puglisi, Giuseppe
name: Tucker, Carole
name: Wollack, Edward J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present the design, fabrication, and measured performance of metamaterial Anti-Reflection Cuttings (ARCs) for large-format alumina filters operating over more than an octave of bandwidth to be deployed on the Simons Observatory (SO). The ARC consists of sub-wavelength features diced into the optic's surface using a custom dicing saw with near-micron accuracy. The designs achieve percent-level control over reflections at angles of incidence up to 20$^\circ$. The ARCs were demonstrated on four 42 cm diameter filters covering the 75-170 GHz band and a 50 mm diameter prototype covering the 200-300 GHz band. The reflection and transmission of these samples were measured using a broadband coherent source that covers frequencies from 20 GHz to 1.2 THz. These measurements demonstrate percent-level control over reflectance across the targeted pass-bands and a rapid reduction in transmission as the wavelength approaches the length scale of the metamaterial structure where scattering dominates the optical response. The latter behavior enables the use of the metamaterial ARC as a scattering filter in this limit.
description: 9 pages, 8 figures, published in Applied Optics
Asymptotic behaviour of functionals of cyclical long-range dependent random fields
Creators: name: Klykavka, Boris
name: Olenko, Andriy
name: Vicendese, Matthew
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G60, 60F17

description: Long-range dependent random fields with spectral densities which are unbounded at some frequencies are investigated. We demonstrate new examples of covariance functions which do not exhibit regular varying asymptotic behaviour at infinity. However, variances of averaged functionals of these fields are regularly varying. Limit theorems for weighted functionals of cyclical long-range dependent fields are obtained. The order of normalizing constants and relations between the weight functions and singularities in non-degenerative asymptotics are discussed.
description: 18 pages, 6 figures. This is an Author's Accepted Manuscript of an article published in the Ukrainian Mathematical Bulletin, Vol.9, No. 2. (2012), 191--208. and republished by Journal of Mathematical Sciences. Vol.187, No. 1. (2012), 35--48. The final publication is available at link.springer.com
Reliability analysis of discrete-state performance functions via adaptive sequential sampling with detection of failure surfaces
Creators: name: Vořechovský, Miroslav
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The paper presents a new efficient and robust method for rare event probability estimation for computational models of an engineering product or a process returning categorical information only, for example, either success or failure. For such models, most of the methods designed for the estimation of failure probability, which use the numerical value of the outcome to compute gradients or to estimate the proximity to the failure surface, cannot be applied. Even if the performance function provides more than just binary output, the state of the system may be a non-smooth or even a discontinuous function defined in the domain of continuous input variables. In these cases, the classical gradient-based methods usually fail. We propose a simple yet efficient algorithm, which performs a sequential adaptive selection of points from the input domain of random variables to extend and refine a simple distance-based surrogate model. Two different tasks can be accomplished at any stage of sequential sampling: (i) estimation of the failure probability, and (ii) selection of the best possible candidate for the subsequent model evaluation if further improvement is necessary. The proposed criterion for selecting the next point for model evaluation maximizes the expected probability classified by using the candidate. Therefore, the perfect balance between global exploration and local exploitation is maintained automatically. The method can estimate the probabilities of multiple failure types. Moreover, when the numerical value of model evaluation can be used to build a smooth surrogate, the algorithm can accommodate this information to increase the accuracy of the estimated probabilities. Lastly, we define a new simple yet general geometrical measure of the global sensitivity of the rare-event probability to individual variables, which is obtained as a by-product of the proposed algorithm.
description: Manuscript CMAME-D-22-00532R1 (Computer Methods in Applied Mechanics and Engineering)
Enhancing destination competitiveness through the use of a strategic visioning approach to tourism planning
Creators: name: Cooper, Chris
name: Ruhanen, Lisa
Publisher: name: Journal of Tourism & Development
Year: 2004

description: The growing number of destinations in the global tourism marketplace has placed considerable emphasis on the notion of destination competitiveness. While, competitiveness has often been viewed in economic terms, the issue of sustainability has highlighted the fact that market share cannot be pursued at the expense of the environmental and social resources of the destination. One such planning approach to overcome these issues is strategic visioning. By adopting a strategic visioning approach to oturim planning it is proposed that a destination's competitiveness can be enhanced due to the processes' integration of sustainable development principles; the emphasis on the future; the requirement for collaboration between destination stakeholders; and the flexibility the process provides for changing environmental conditions.
description: Journal of Tourism & Development, n.º 1 (2004)
Symplectic eigenvalues of positive-semidefinite matrices and the trace minimization theorem
Creators: name: Son, Nguyen Thanh
name: Stykel, Tatjana
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 15A15, 15A18, 70G45

description: Symplectic eigenvalues are conventionally defined for symmetric positive-definite matrices via Williamson's diagonal form. Many properties of standard eigenvalues, including the trace minimization theorem, are extended to the case of symplectic eigenvalues. In this note, we will generalize Williamson's diagonal form for symmetric positive-definite matrices to the case of symmetric positive-semidefinite matrices, which allows us to define symplectic eigenvalues, and prove the trace minimization theorem in the new setting.
description: 9 pages
Interplay of spin gap and nanoscopic quantum fluctuations in intermetallic CeCu2Ge2
Creators: name: Singh, D. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutron scattering measurements are used to elucidate interplay of the field-induced spin gap and the quantum fluctuations in archetypal heavy electron system CeCu$_{2}$Ge$_{2}$. A spin gap of $Δ$ = 0.56 meV is found to develop near the field-induced quantum critical state at $H$$_{c}$$\simeq$ 8 T, driven by fluctuations of the long range antiferromagnetic order parameter. The superconducting transition temperature in many magnetic superconductors is found to exhibit one-to-one correspondence with the spin gap. In this regard, the demonstration of an interplay of the spin gap with the nanoscopic dynamic correlation provides new arena to explore direct relation between the quantum critical behavior and the unconventional superconductivity, especially in heavy electrons systems.
description: 5 pages, 4 figures. arXiv admin note: text overlap with arXiv:1204.4375
Heute vor neunzehn Jahren oder: der alte Bachmayer und sein Enkel am 18. August 1849; [1849]
Creators: name: Hopp, Friedrich
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform des Erscheinungsvermerks: Rudolf Grün, Verleger. - Kolophon: Geruckt bei Josef Ludwig, Josefstadt, Florianigasse Nr. 52.
Additional file 1 of Construct validity of a questionnaire for measuring student engagement in problem-based learning tutorials
Creators: name: Kassab, Salah Eldin
name: El-Baz, Amany
name: Hassan, Nahla
name: Hamdy, Hossam
name: Mamede, Silvia
name: Schmidt, Henk G.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Turismo e património - algumas ideias para reflexão
Creators: name: Umbelino, Jorge
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: A relação entre o turismo e o património é uma matéria tão importante quanto diversa e complexa. Se é certo que o turismo depende do património para estruturar a sua oferta, não é menos verdade que lhe retribui através de um aumento de visibilidade e geração de receitas próprias.Pretende-se, com este artigo, debater alguns dos aspetos que dão corpo a este relacionamento, a saber: diferentes formas de interpretar o conceito de património e razões para a sua crescente valorização; atitudes na gestão do património; aproveitamentos turísticos do património material e imaterial; critérios para o reconhecimento turístico do património; padronização e diferenciação nos modelos de oferta do património.
description: Revista Turismo & Desenvolvimento, n.º 1 (2004)
Turismo em ilhas - sustentabilidade e globalização
Creators: name: Martins, João Félix
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: O desenvolvimento sustentado tem sido usado e "multiabusado" desde o relatório Brundtland em 1987, que, aliás, não se refere ao turismo no contexto da sustentabilidade. As ilhas são ecossistemas que merecem uma atenção especial devido à sua fragilidade. O turismo em ilhas, sendo opção de desenvolvimento, é do interesse dos diversos stakeholders e também um território fértil para a investigação teórica e aplicada. A sustentabilidade sem a competitividade é vazia, e a competitividade sem a sustentabilidade é cega. Esta agenda é particularmente importante para o território continental de Portugal e para as Regiões Autónomas e insulares da Madeira e dos Açores, enquanto destinos turísticos. Há que ter em conta os interesses dos residentes e "outros públicos".
description: Revista Turismo & Desenvolvimento, n.º 1 (2004)
On Krylov Methods for Large Scale CBCT Reconstruction
Creators: name: Landman, Malena Sabate
name: Biguri, Ander
name: Hatamikia, Sepideh
name: Boardman, Richard
name: Aston, John
name: Schonlieb, Carola-Bibiane
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Krylov subspace methods are a powerful family of iterative solvers for linear systems of equations, which are commonly used for inverse problems due to their intrinsic regularization properties. Moreover, these methods are naturally suited to solve large-scale problems, as they only require matrix-vector products with the system matrix (and its adjoint) to compute approximate solutions, and they display a very fast convergence. Even if this class of methods has been widely researched and studied in the numerical linear algebra community, its use in applied medical physics and applied engineering is still very limited. e.g. in realistic large-scale Computed Tomography (CT) problems, and more specifically in Cone Beam CT (CBCT). This work attempts to breach this gap by providing a general framework for the most relevant Krylov subspace methods applied to 3D CT problems, including the most well-known Krylov solvers for non-square systems (CGLS, LSQR, LSMR), possibly in combination with Tikhonov regularization, and methods that incorporate total variation (TV) regularization. This is provided within an open source framework: the Tomographic Iterative GPU-based Reconstruction (TIGRE) toolbox, with the idea of promoting accessibility and reproducibility of the results for the algorithms presented. Finally, numerical results in synthetic and real-world 3D CT applications (medical CBCT and μ-CT datasets) are provided to showcase and compare the different Krylov subspace methods presented in the paper, as well as their suitability for different kinds of problems.
description: submitted
A investigação científica e o turismo
Creators: name: Silva, João Albino
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: O presente artigo tem por objetivo contribuir para uma reflexão em torno de uma agenda de investigação científica para o turismo português. Ao admitir que sem ciência não há progresso económico e social, o artigo procura esclarecer os fundamentos de uma prática científica no turismo, defendendo quer uma aplicação dos elementos que fazem parte do método científico, quer uma visão multidisciplinar para se encontrarem as melhores soluções para os problemas do turismo. Ao efectuar uma abordagem das iniciativas internacionais da investigação científica e da sua divulgação, o texto conclui que o conhecimento já acumulado neste domínio e a importância que o turismo possui na estrutura produtiva em Portugal justificam a preparação de uma agenda nacional através da identificação das necessidades da investigação baseada num diálogo entre as autoridades, as empresas e a comunidade científica.
description: Revista Turismo & Desenvolvimento, n.º 1 (2004)
The Be-test in the Li-rich star \#1657 of NGC 6397: evidence for Li-flash in RGB stars?
Creators: name: Pasquini, L.
name: Koch, A.
name: Smiljanic, R.
name: Bonifacio, P.
name: Modigliani, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Li-rich turn-off star in the globular cluster NGC 6397 could represent the smoking gun for some very rare episode of Li enrichment in globular clusters. We aim to understand the nature of the Li enrichment by performing a spectroscopic analysis of the star, in particular of its beryllium (Be) abundance, and by investigating its binary nature. We observe the near UV region where the Beii resonance doublet and the NH bands are located. We could not detect the Beii lines and derive an upper limit of log (Be/H)< -12.2, that is consistent with the Be observed in other stars of the cluster. We could detect a weak G-band, which implies a mild carbon enhancement [C/Fe]$+0.4\pm0.2$. We could not detect the UV NH band, and we derive an upper limit [N/Fe]$< 0.0$. For oxygen we could notdetect any of the near UV OH lines, which implies that oxygen cannot be strongly enhanced in this star. This is consistent with the detection of the Oi triplet at 777nm, which is consistent with [O/Fe]~0.5. Combining the UVES and Mike data, we could not detect any variation in the radial velocity greater than 0.95 kms$^{-1}$ over 8 years. The chemical composition of the star strongly resembles that of `first generation' NGC6397 stars, with the huge Li as the only deviating abundance. Not detecting Be rules out two possible explanations of the Li overabundance: capture of a substellar body and spallation caused by a nearby type II SNe. Discrepancies are also found with respect to other accretion scenarios,except for contamination by the ejecta of a star that has undergone the RGB Li-flash.
description: Accepted for publication in A&A
Asymmetry of velocity increments in turbulence
Creators: name: Sreenivasan, Katepalli R.
name: Iyer, Kartik P.
name: Vinodh, Ashvin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We use well-resolved direct numerical simulations of high-Reynolds-number turbulence to study a fundamental statistical property of turbulence -- the asymmetry of velocity increments -- with likely implications on important dynamics. This property, ignored by existing small-scale phenomenological models, manifests most prominently in the non-monotonic trend of velocity increment moments (or structure functions) with the moment order, and in differences between ordinary and absolute structure functions for a given separation distance. We show that high-order structure functions arise nearly entirely from the negative side of the probability density of velocity increments, essentially removing the ambiguity between ordinary and absolute moments, and provide a plausible dynamical interpretation of this result.
Multi-channel quantum noise suppression and phase-sensitive modulation in a hybrid optical resonant cavity system
Creators: name: Di, Ke
name: Tan, Shuai
name: Wang, Liyong
name: Cheng, Anyu
name: Wang, Xi
name: Sun, Yuming
name: Guo, Junqi
name: Liu, Yu
name: Du, Jiajia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum noise suppression and phase-sensitive modulation of continuously variable in vacuum and squeezed fields in a hybrid resonant cavity system are investigated theoretically. Multiple dark windows similar to electromagnetic induction transparency (EIT) are observed in quantum noise fluctuation curve. The effects of pumping light on both suppression of quantum noise and control the widths of dark windows are carefully analyzed, and the saturation point of pumping light for nonlinear crystal conversion is obtained. We find that the noise suppression effect is strongly sensitive to the pumping light power. The degree of noise suppression can be up to 13.9 dB when the pumping light power is 6.5 Beta_th. Moreover, a phase-sensitive modulation scheme is demonstrated, which well fills the gap that multi-channel quantum noise suppression is difficult to realize at the quadrature amplitude of squeezed field. Our result is meaningful for various applications in precise measurement physics, quantum information processing and quantum communications of system-on-a-chip.
Hosotani model in closed-string theory
Creators: name: Shiraishi, Kiyoshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Hosotani mechanism in the closed-string theory with current algebra symmetry is described by the (old covariant) operator method. We compare the gauge symmetry breaking mechanism in a string theory which contains SU(2) symmetry originated from current algebra with the one in an equivalent compactified closed-string theory. We also investigate the difference between the Hosotani mechanism and the Higgs mechanism in closed-string theories by calculation of a four-point amplitude of `Higgs' bosons at tree level.
description: 16 pages, no figure
Turismo em espaço rural: motivações e recursos holandeses em Ferreira de Aves - Sátão
Creators: name: Pinto, Acácio
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: A compreensão do nascimento de um destino turístico, através da análise da correlação 'motivações - recursos', é um importante elemento para os diversos agentes económicos que se movem na área do turismo e, igualmente, para as instituições públicas, a quem cabe a definição das políticas para o sector. Assim sendo, moveu-nos no estudo que efectuámos, e do qual aqui vamos deixar uma breve síntese, a tentativa de compreensão das motivações subjacentes à deslocação e a avaliação dos recursos turísticos, feita por uma comunidade de turistas holandeses que nos últimos anos se tem vindo a deslocar para um parque de campismo localizado numa área rural do concelho de Sátão (Casfreires - Ferreira de Aves), onde, posteriormente, nas imediações do parque, alguns desses turistas começaram a construir diversas residências secundárias que ocupam durante longos períodos do ano.
description: Revista Turismo & Desenvolvimento, n.º 2 (2004)
An interrater reliability study of gait analysis systems with the dual task paradigm in healthy young and older adults
Creators: name: Klotzbier, Thomas Jürgen
name: Wollesen, Bettina
name: Vogel, Oliver
name: Rudisch, Julian
name: Cordes, Thomas
name: Jöllenbeck, Thomas
name: Vogt, Lutz
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
subject: cognitive-motor interference
subject: dual task walking
subject: older adults
subject: verbal fluency
subject: minimal detectable change
subject: gait analysis

description: Background and aims: One reason for the controversial discussion of whether the dual task (DT) walking paradigm has an added value for diagnosis in clinical conditions might be the use of different gait measurement systems. Therefore, the purpose was 1) to detect DT effects of central gait parameters obtained from five different gait analysis devices in young and old adults, 2) to assess the consistency of the measurement systems, and 3) to determine if the absolut and proportional DT costs (DTC) are greater than the system-measurement error under ST. Methods: Twelve old (72.2 ± 7.9y) and 14 young adults (28.3 ± 6.2y) walked a 14.7-m distance under ST and DT at a self-selected gait velocity. Interrater reliability, precision of the measurement and sensitivity to change were calculated under ST and DT. Results: An age effect was observed in almost all gait parameters for the ST condition. For DT only differences for stride length (p < .029, ɳ2p = .239) as well as single and double limb support (p = .036, ɳ2p = .227; p = .034, ɳ2p = .218) remained. The measurement systems showed a lower absolute agreement compared to consistency across all systems. Conclusions: When reporting DT effects, the real changes in performance and random measurement errors should always be accounted for. These findings have strong implications for interpreting DT effects.
Deep learning optimal quantum annealing schedules for random Ising models
Creators: name: Hegde, Pratibha Raghupati
name: Passarelli, Gianluca
name: Cantele, Giovanni
name: Lucignano, Procolo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A crucial step in the race towards quantum advantage is optimizing quantum annealing using ad-hoc annealing schedules. Motivated by recent progress in the field, we propose to employ long-short term memory (LSTM) neural networks to automate the search for optimal annealing schedules for random Ising models on regular graphs. By training our network using locally-adiabatic annealing paths, we are able to predict optimal annealing schedules for unseen instances and even larger graphs than those used for training.
description: 10 pages, 8 figures
Fluxos turísticos internacionais: um estudo de segmentação
Creators: name: Águas, Paulo
name: Rita, Paulo
name: Costa, Jorge
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: O Estado, através das Organizações Nacionais de Turismo, desempenha um papel crucial no marketing do país enquanto destino turístico internacional, o que pressupõe o conhecimento dos mercados, nomeadamente através de exercícios de segmentação. Um estudo empírico sobre 15 Estados Membros da União Europeia, enquanto emissores de fluxos turísticos para o espaço comunitário, revelou a existência de dois segmentos, obtidos a partir da aplicação da análise de clusters a oito variáveis económico-sociais.
description: Revista Turismo & Desenvolvimento, n.º 2 (2004)
Generic Go to Go: Dictionary-Passing, Monomorphisation, and Hybrid
Creators: name: Ellis, Stephen
name: Zhu, Shuofei
name: Yoshida, Nobuko
name: Song, Linhai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Go is a popular statically-typed industrial programming language. To aid the type safe reuse of code, the recent Go release (Go 1.18) published on 15th March 2022 includes bounded parametric polymorphism via generic types. Go 1.18 implements generic types using combination of monomorphisation and call-graph based dictionary-passing called hybrid. This hybrid approach can be viewed as an optimised form of monomorphisation that statically generates specialised methods and types based on possible instantiations. A monolithic dictionary supplements information lost during monomorphisation, and it is structured according to the program's call graph. Unfortunately, the hybrid approach still suffers from code bloat, poor compilation speed, and limited code coverage. In this paper we propose and formalise a new non-specialising call-site based dictionary-passing translation. Our call-site based translation creates individual dictionaries for each type parameter, with dictionary construction occurring in place of instantiation, overcoming the limitations of hybrid. We prove it correct using a novel and general bisimulation up to technique. To better understand how different generics translations approaches work in practice, we benchmark five translators, Go 1.18, two existing monomorphisation translators, our dictionary-passing translator, and erasure translator. Our findings reveal several suggestions for improvements for Go 1.18 -- specifically how to overcome the expressiveness limitations of generic Go, and improve compile time and compiled code size performance of Go 1.18.
description: Full version of paper submitted to OOPSLA '22
K.K. Oesterreichisches Militair. Seressaner; [um 1848]
Creators: name: Trentsenśky, Matthias
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform der Veröffentlichungsangabe: No. 100 Herausgegeben von M. Trentsensky in Wien
The development of a systematic approach to government involvement in international tourist events
Creators: name: Costa, Carlos Manuel Gonçalves
name: Henriques, Luís Miguel Mota
Publisher: name: Journal of Tourism & Development
Year: 2004

description: Althought there seems to exist recognition that hosting international events may bring many tourism benefits, what seems to prevail is an adhoc approach in their use as a marketing tool. The lack of strategy is likely to result in less than full accomplishment of the benefits. Hence, a more planned and systematic approach to events is necessary in order to fully take advantage of the opportunity posed by the organisation of such events. The overall aim of this paper is to address the need to develop a systematic approach to Govemmenfs involvement in international tourist events. The Portuguese strategy for international tourist events is presented and evaluated.
description: Journal of Tourism & Development, n.º 2 (2004)
Western North Pacific Tropical Cyclone Intensity and ENSO
Creators: name: Camargo, Suzana J.
name: Sobel, Adam H.
Publisher: name: Columbia University
Year: 2005
Subjects: Meteorology
Atmosphere

description: The influence of the El Niño–Southern Oscillation (ENSO) on tropical cyclone intensity in the western North Pacific basin is examined. Accumulated cyclone energy (ACE), constructed from the best-track dataset for the region for the period 1950–2002, and other related variables are analyzed. ACE is positively correlated with ENSO indices. This and other statistics of the interannually varying tropical cyclone distribution are used to show that there is a tendency in El Niño years toward tropical cyclones that are both more intense and longer-lived than in La Niña years. ACE leads ENSO indices: during the peak season (northern summer and fall), ACE is correlated approximately as strongly with ENSO indices up to six months later (northern winter), as well as simultaneously. It appears that not all of this lead–lag relationship is easily explained by the autocorrelation of the ENSO indices, though much of it is. Interannual variations in the annual mean lifetime, intensity, and number of tropical cyclones all contribute to the ENSO signal in ACE, though the lifetime effect appears to be the most important of the three.
The on-shell expansion: from Landau equations to the Newton polytope
Creators: name: Gardi, Einan
name: Herzog, Franz
name: Jones, Stephen
name: Ma, Yao
name: Schlenk, Johannes
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the application of the method of regions to Feynman integrals with massless propagators contributing to off-shell Green's functions in Minkowski spacetime (with non-exceptional momenta) around vanishing external masses, $p_i^2\to 0$. This on-shell expansion allows us to identify all infrared-sensitive regions at any power, in terms of infrared subgraphs in which a subset of the propagators become collinear to external lightlike momenta and others become soft. We show that each such region can be viewed as a solution to the Landau equations, or equivalently, as a facet in the Newton polytope constructed from the Symanzik graph polynomials. This identification allows us to study the properties of the graph polynomials associated with infrared regions, as well as to construct a graph-finding algorithm for the on-shell expansion, which identifies all regions using exclusively graph-theoretical conditions. We also use the results to investigate the analytic structure of integrals associated with regions in which every connected soft subgraph connects to just two jets. For such regions we prove that multiple on-shell expansions commute. This applies in particular to all regions in Sudakov form-factor diagrams as well as in any planar diagram.
description: 73 pages, 16 figures
A non-linear mathematical model of cell turnover, differentiation and tumorigenesis in the intestinal crypt
Creators: name: d'Onofrio, Alberto
name: Tomlinson, Ian P. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: We present a development of a model of the relationship between cells in three compartments of the intestinal crypt: stem cells, semi-differentiated cells and fully differentiated cells. Stem and semi-differentiated cells may divide to self-renew, undergo programmed death or progress to semi-differentiated and fully differentiated cells respectively. The probabilities of each of these events provide the most important parameters of the model. Fully differentiated cells do not divide, but a proportion undergoes programmed death in each generation. Our previous models showed that failure of programmed death - for example, in tumorigenesis - could lead either to exponential growth in cell numbers or to growth to some plateau. Our new models incorporate plausible fluctuation in the parameters of the model and introduce non-linearity by assuming that the parameters depend on the numbers of cells in each state of differentiation. We find that the model is characterized by bifurcation between increase in cell numbers to stable equilibrium or 'explosive' exponential growth; in a restricted number of cases, there may be multiple stable equilibria. Fluctuation in cell numbers undergoing programmed death, for example caused by tissue damage, generally makes exponential growth more likely, as long as the size of the fluctuation exceeds a certain critical value for a sufficiently long period of time. In most cases, once exponential growth has started, this process is irreversible. In some circumstances, exponential growth is preceded by a long plateau phase, of variable duration, mimicking equilibrium: thus apparently self-limiting lesions may not be so in practice.
description: 12 pages, 6 figures
Improving efficiency in fast food restaurants: a frontier approach
Creators: name: Gímenez, Victor M.
Publisher: name: Journal of Tourism & Development
Year: 2004

description: Measuremen t of operating efficiency is indispensable for service businesses. Modem and rigorous methodologies for quantifying overall efficiency are required in competitive sectors such as the restaurant industry in Spain. For example, chain restaurant managers need tools for carrying out a benchmarking process among their own or franchised restaurants to identify which ones are inefficient and, as result, set targets for the improvement of their inputs and outputs in order to make them efficient. For this purpose, a methodology known as data envelopment analysis is used to measure the overall operating efficiency of a leading Spanish restaurant chain. The study found that, by correcting the inefficiencies identified through the model, profit improvements amounting over 1.5 million euros could be achieved.
description: Journal of Tourism & Development, n.º 2 (2004)
Quenching jets increases their flavor
Creators: name: Sirimanna, Chathuranga
name: Soudi, Ismail
name: Vujanovic, Gojko
name: Xing, Wen-Jing
name: Cao, Shanshan
name: Majumder, Abhijit
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The widespread notion that jets quenched in a Quark-Gluon-Plasma (QGP) are similar in their parton flavor composition to jets in vacuum is critically examined. We demonstrate that while the soft to semi-hard [low to intermediate transverse momentum ($p_T$)] sector of vacuum jets are predominantly bosonic i.e., composed of gluons, \emph{sufficiently} quenched jets can have an intermediate momentum sector that is predominantly fermionic, dominated by quarks and antiquarks. We demonstrate, using leading order perturbative QCD processes, that the rate of flavor conversion from a gluon traversing the QGP as part of a jet, to a quark or antiquark, versus the reverse process, grows steadily with falling $p_T$. Simple diagrammatic estimates are followed by a variety of realistic simulations in static media. The relation of this increase in flavor to the observed baryon enhancement at intermediate $p_T$ is studied in a fully realistic simulation.
description: 17 pages, 14 figures
Tourism research in Austrália: an estimate of who and how much
Creators: name: Scott, Noel
Publisher: name: Journal of Tourism & Development
Year: 2004

description: Tourism, like other sectors of the economy, requires research and innovation in order to prosper. This paper seeks to provide basic information on tourism research in Austrália. Surprisingly, while there have been many articles in the tourism literature that call for research on numerous topics, the capacity of the tourism sector to obtain this research has not been examined. The findings of this research, based on a survey of Australian tourism research providers, indicate that approximately $25 million dollars was spent on tourism research in 1999/2000. A number of organizations were found to conduct tourism research with most research conducted by the govemment sector. In comparison to other sectors of the economy, tourism research appears under funded. A recent public private sector initiative, the formation of the Cooperative Research Centre for Sustainable Tourism has partially addressed this deficiency.
description: Journal of Tourism & Development, n.º 2 (2004)
FETNet: Feature Erasing and Transferring Network for Scene Text Removal
Creators: name: Lyu, Guangtao
name: Liu, Kun
name: Zhu, Anna
name: Uchida, Seiichi
name: Iwana, Brian Kenji
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The scene text removal (STR) task aims to remove text regions and recover the background smoothly in images for private information protection. Most existing STR methods adopt encoder-decoder-based CNNs, with direct copies of the features in the skip connections. However, the encoded features contain both text texture and structure information. The insufficient utilization of text features hampers the performance of background reconstruction in text removal regions. To tackle these problems, we propose a novel Feature Erasing and Transferring (FET) mechanism to reconfigure the encoded features for STR in this paper. In FET, a Feature Erasing Module (FEM) is designed to erase text features. An attention module is responsible for generating the feature similarity guidance. The Feature Transferring Module (FTM) is introduced to transfer the corresponding features in different layers based on the attention guidance. With this mechanism, a one-stage, end-to-end trainable network called FETNet is constructed for scene text removal. In addition, to facilitate research on both scene text removal and segmentation tasks, we introduce a novel dataset, Flickr-ST, with multi-category annotations. A sufficient number of experiments and ablation studies are conducted on the public datasets and Flickr-ST. Our proposed method achieves state-of-the-art performance using most metrics, with remarkably higher quality scene text removal results. The source code of our work is available at: \href{https://github.com/GuangtaoLyu/FETNet}{https://github.com/GuangtaoLyu/FETNet.
description: Accepted by Pattern Recognition 2023
Additional file 1 of Performance of synacthen test in chronic hemodialysis patients
Creators: name: Nickler, Manuela
name: Stampf, Susanne
name: Bernasconi, Luca
name: Segerer, Stephan
name: Blum, Claudine A.
name: Kim, Min Jeong
Publisher: name: figshare
Year: 2023
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health

description: Supplementary Material 1
Kink-Antikink Interaction Forces and Bound States in a nonlinear Schr{ö}dinger Model with Quadratic and Quartic dispersion
Creators: name: Tsolias, G. A.
name: Decker, Robert J.
name: Demirkaya, A.
name: Alexander, T. J.
name: Parker, Ross
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In the present work we explore the competition of quadratic and quartic dispersion in producing kink-like solitary waves in a model of the nonlinear Schr{ö}dinger type bearing cubic nonlinearity. We present the first 6 families of multikink solutions and explore their bifurcations as the strength of the quadratic dispersion is varied. We reveal a rich bifurcation structure for the system, connecting two-kink states with states involving 4-, as well as 6-kinks. The stability of all of these states is explored. For each family, we discuss a ``lower branch'' adhering to the energy landscape of the 2-kink states. We also, however, study in detail the ``upper branches'' bearing higher numbers of kinks. In addition to computing the stationary states and analyzing their stability within the partial differential equation model, we develop an effective particle ordinary differential equation theory that is shown to be surprisingly efficient in capturing the kink equilibria and normal (as well as unstable) modes. Finally, the results of the bifurcation analysis are corroborated by means of direct numerical simulations involving the excitation of the states in a targeted way in order to explore their instability-induced dynamics.
Feldmarschal Lieutenant Baron Jellacic Banus von Croatien; [um 1848]
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Porträt des Feldmarschall-Leutnant Josef Jelačić von Bužim, der als Reiter seine Soldaten anführt
Património e turismo cidade, chuva miudinha e três milénios de história
Creators: name: Loza, Rui Ramos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: Quando pensamos em públicos que desejam conhecer a nossa arte e a nossa maneira de ser, a nossa realidade histórica, ambiental e cultural, que têm prazer de nos conhecer como nós somos, podemos começar a pensar que há espaço, e ainda há tempo, para transformar as nossas cidades em destino turístico de muitas gentes, de muitos países e de muitas idades que poderão beneficiar da qualidade urbana que temos para lhes oferecer. Há um turismo cultural que nos interessa privilegiar, procurando captar aqueles que preferem conhecer a nossa riqueza em todas as dimensões, com o que tem de belo e de feio, de antigo e de novo, de saboroso e de insosso, de ilustre e de "negro". É a esse turismo que podemos vender a nossa insistente chuva miudinha!
description: Revista Turismo & Desenvolvimento, n.º 2 (2004)
Equivalence classes of subquotients of supersymmetric pseudodifferential operator modules
Creators: name: Conley, Charles H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B66

description: We study the equivalence classes of the non-resonant subquotients of spaces of pseudodifferential operators between tensor density modules over the 1|1 superline, as modules of the Lie superalgebra of contact vector fields. There is a 2-parameter family of subquotients with any given Jordan-Holder composition series. We give a complete set of even equivalence invariants for subquotients of all lengths. In the critical case of length 6, the even equivalence classes within each non-resonant 2-parameter family are specified by a pencil of conics. In lengths exceeding 6 our invariants are not fully simplified: in length 7 we expect that there are only finitely many equivalences other than conjugation, and in lengths exceeding 7 we expect that conjugation is the only equivalence. We prove this in lengths exceeding 14. We also analyze certain lacunary subquotients.
description: 24 pages
AMS measurements of cosmogenic and supernova-ejected radionuclides in deep-sea sediment cores
Creators: name: Feige, J.
name: Wallner, A.
name: Fifield, L. K.
name: Korschinek, G.
name: Merchel, S.
name: Rugel, G.
name: Steier, P.
name: Winkler, S. R.
name: Golser, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Samples of two deep-sea sediment cores from the Indian Ocean are analyzed with accelerator mass spectrometry (AMS) to search for traces of recent supernova activity around 2 Myr ago. Here, long-lived radionuclides, which are synthesized in massive stars and ejected in supernova explosions, namely 26Al, 53Mn and 60Fe, are extracted from the sediment samples. The cosmogenic isotope 10Be, which is mainly produced in the Earths atmosphere, is analyzed for dating purposes of the marine sediment cores. The first AMS measurement results for 10Be and 26Al are presented, which represent for the first time a detailed study in the time period of 1.7-3.1 Myr with high time resolution. Our first results do not support a significant extraterrestrial signal of 26Al above terrestrial background. However, there is evidence that, like 10Be, 26Al might be a valuable isotope for dating of deep-sea sediment cores for the past few million years.
description: 5 pages, 2 figures, Proceedings of the Heavy Ion Accelerator Symposium on Fundamental and Applied Science, 2013, will be published by the EPJ Web of conferences
Ermordung der Abgeordneten von Auerswald u. von Lichnowsky; [1848]
Creators: name: Völker, Wilhelm
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform der Veröffentlichungsangabe: Druck u Verlag v Ed Gust May in Frankfurt aM
Promoção do turismo na internet- análise de sites oficiais de turismo de cidades europeias com arte nova
Creators: name: Pinho, Cláudia
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: É crescente o impacto da Internet no turismo, nomeadamente na promoção de destinos. Dado que a Europa é um importante destino cultural, este artigo pretende analisar a forma como as cidades pertencentes à Rede Europeia para a Arte Nova (REAN) promovem, através dos seus sites oficiais de turismo, o estilo Arte Nova. Dá-se particular ênfase aos sites das cidades integradas na REAN, bem como à elaboração de uma metodologia sistemática de avaliação de sites.
description: Revista Turismo & Desenvolvimento, n.º 2 (2004)
A gestão da animação turística como sustentação do aumento das taxas de ocupação
Creators: name: Almeida, Paulo Jorge Santos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2004

description: Numa consciencialização pró-animação, sabemos que as constantes mudanças e evolução das sociedades obrigam a mudanças de mentalidades na gestão e planeamento do turismo e das actividades de animação turística. Os turistas de hoje não são os turistas de ontem, o turismo de amanhã não pode ser o turismo de hoje. Este artigo pretende demonstrar que o turismo ganha, em ocupação dos alojamentos, com a implementação de actividades de animação turística e, como consequência dessa ocupação, o respectivo aumento dos consumos e receitas dos turistas. No caso particular do golfe, como actividade de animação desportiva, apresentamos um conjunto de dados que nos permitem verificar o quanto uma região tem a ganhar com a implementação e promoção desta atracção turística, complemento de outros tipos de turismo já instalados e conceituados.
description: Revista Turismo & Desenvolvimento, n.º 2 (2004)
title: Renal angiomyolipoma containing minimal fat: differential diagnosis with RCC
Creators: name: Lombrado, Fabio
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Kidney
subject: CT
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 63-years old female referred to the radiology department complaining for vague abdominal pain. Routine abdominal US was normal, except for the incidental finding of a right renal lesion not related to patient’s symptoms. Physical examination and blood tests were unremarkable, as well as urinalysis. Abdominal CT was performed.

description: 63 years, female
Additional file 1 of VBCG: 20 validated bacterial core genes for phylogenomic analysis with high fidelity and resolution
Creators: name: Tian, Renmao
name: Imanian, Behzad
Publisher: name: figshare
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics

description: Additional file 1.
Soliton metacrystals: topology and chirality
Creators: name: Fan, Z.
name: Puzyrev, D. N.
name: Skryabin, D. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Designing metamaterials with the required band structure, topology and chirality using nano-fabrication technology revolutionises modern science and impacts daily life. The approach of this work is, however, different. We take a periodic sequence, i.e., metacrystal, of the dissipative optical solitons rotating in a single ring microresonator and demonstrate its properties as of the electromagnetic metamaterial acting in the radio to terahertz frequency range. The metacrystal unit cell consists of the bound pair of solitons, and the distance between them is used as a control parameter. We are reporting the soliton metacrystal band structure and its topological properties. The latter is confirmed by the existence of the $π$ steps experienced by the crystal phonons' geometrical (Zak) phase. Furthermore, we found the phononic edge states in the metacrystals with defects made by removing several solitons. Optical frequency combs corresponding to the soliton metacrystals reveal the spectral butterfly pattern serving as a signature of the spatio-temporal chirality and bearing a resemblance to the butterfly wings illustrating natural occurrences of chirality.
description: 11 pages with an interesting Methods section. Title of the published version has been changed to "Topological soliton metacrystals"