cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ein Commentar zur Eisenstuck'schen Rede am 18. Januar 1849; [1849]
title: "Ich bin fest überzeugt dass Er den materiellen Bedürfnißen nicht abhold ist."
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform des Veröffentlichungsangabe: Verlag v. R. Baist in Rödelheim
Google Analytics as a tool for understanding visitors behaviour: the website of Alentejo as a tourist destination case
Creators: name: Dinis, Maria Gorete Ferreira
name: Costa, Carlos Manuel
name: Pacheco, Osvaldo Manuel Da Rocha
Publisher: name: Journal of Tourism & Development
Year: 2012

description: During the last years we have witnessed a large adoption and utilization of Internet, by enterprises and individuals. The fast development of Internet and its evolution to Web 2.0 make it more friendly and consequently with a higher usage potential. Therefore, it is increasingly more important for enterprises and organizations to have an online presence and engage the visitors. The organizations that are present in the Web, independently of the type of site and business they have, should use Web analytic tools such as Google Analytics as a source of statistical information for supporting decision. The aim of this paper is to present the Google Analytics tool, show the metrics and information you can get from such a tool when applied to the tourism sector. With that purpose, we have chosen the official Website of Alentejo region promotion as tourist destination - www.visitalentejo.pt. The data reports of the Google Analytics were analysed quantitatively and some conclusions were drawn. The findings show an important practical contribution for the knowledge of the visitor profile of the Turismo of Alentejo site, as well as for the definition of the online marketing strategy.
description: Journal of Tourism & Development, vol. 1 n.º 17/18 (2012)
Spin Neurons: A Possible Path to Energy-Efficient Neuromorphic Computers
Creators: name: Sharad, Mrigank
name: Fan, D.
name: Roy, Kaushik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Emerging Technologies (cs.ET)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Recent years have witnessed growing interest in the field of brain-inspired computing based on neural-network architectures. In order to translate the related algorithmic models into powerful, yet energy-efficient cognitive-computing hardware, computing-devices beyond CMOS may need to be explored. The suitability of such devices to this field of computing would strongly depend upon how closely their physical characteristics match with the essential computing primitives employed in such models. In this work we discuss the rationale of applying emerging spin-torque devices for bio-inspired computing. Recent spin-torque experiments have shown the path to low-current, low-voltage and high-speed magnetization switching in nano-scale magnetic devices. Such magneto-metallic, current-mode spin-torque switches can mimic the analog summing and thresholding operation of an artificial neuron with high energy-efficiency. Comparison with CMOS-based analog circuit-model of neuron shows that spin neurons can achieve more than two orders of magnitude lower energy and beyond three orders of magnitude reduction in energy-delay product. The application of spin neurons can therefore be an attractive option for neuromorphic computers of future.
Inverse modeling of nonisothermal multiphase poromechanics using physics-informed neural networks
Creators: name: Amini, Danial
name: Haghighat, Ehsan
name: Juanes, Ruben
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences
subject: J.2
subject: 76S05, 65N12

description: We propose a solution strategy for parameter identification in multiphase thermo-hydro-mechanical (THM) processes in porous media using physics-informed neural networks (PINNs). We employ a dimensionless form of the THM governing equations that is particularly well suited for the inverse problem, and we leverage the sequential multiphysics PINN solver we developed in previous work. We validate the proposed inverse-modeling approach on multiple benchmark problems, including Terzaghi's isothermal consolidation problem, Barry-Mercer's isothermal injection-production problem, and nonisothermal consolidation of an unsaturated soil layer. We report the excellent performance of the proposed sequential PINN-THM inverse solver, thus paving the way for the application of PINNs to inverse modeling of complex nonlinear multiphysics problems.
title: El Nino und La Nina : GRACE misst Gegensaetze im westantarktischen Schneefall
Creators: name: Sasgen, Ingo
name: Dobslaw, Henryk
name: Martinec, Zdenek
name: Thomas, Maik
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2012

description: System Erde; Vol. 2, Issue 1; ISSN 2191-8589
3D Visual Tracking to Quantify Physical Contact Interactions in Human-to-Human Touch
Creators: name: Xu, Shan
name: Xu, Chang
name: McIntyre, Sarah
name: Olausson, Håkan
name: Gerling, Gregory J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Across a plethora of social situations, we touch others in natural and intuitive ways to share thoughts and emotions, such as tapping to get one's attention or caressing to soothe one's anxiety. A deeper understanding of these human-to-human interactions will require, in part, the precise measurement of skin-to-skin physical contact. Among prior efforts, each measurement approach exhibits certain constraints, e.g., motion trackers do not capture the precise shape of skin surfaces, while pressure sensors impede direct skin contact. In contrast, this work develops an interference-free 3D visual tracking system using a depth camera to measure the contact attributes between the bare hand of a toucher and the forearm of a receiver. The toucher's hand is tracked as a posed and positioned mesh by fitting a hand model to detected 3D joints, whereas the forearm is extracted as a detailed 3D surface. Based on a contact model of point clouds, the spatiotemporal contact changes are decomposed as six high-resolution time-series attributes, i.e., contact area, indentation depth, absolute velocity, and three orthogonal velocity components, together with contact duration. To examine the system's capabilities and limitations, two experiments were performed. First, to evaluate its ability to discern human touches, one person delivered cued social messages, e.g., happiness, anger, sympathy, to another using their preferred gestures. The results indicated that messages, gestures, and the individual touchers, were readily discerned from their contact attributes. Second, the measurement accuracy was validated against independent devices, including an electromagnetic tracker, pressure mat, and laser sensor. While validated here in the context of social communication, this system is extendable to human touch interactions such as maternal care of infants and massage therapy.
description: Accepted by Frontiers in Physiology
Identificação dos Media Sociais utilizados pelas organizações de gestão de destinos: o caso de estudo do destino turístico Serra da Estrela
Creators: name: Roque, Vitor
name: Fernandes, Gonçalo
name: Raposo, Rui
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: O turismo como um dos setores económicos onde a informação desempenha um papel fundamental é consequentemente um dos mais influenciados pela emergência dos media sociais. Atualmente, a utilização generalizada de media social e, em especial, o crescimento exponencial das plataformas de redes sociais, estão a provocar alterações radicais na promoção dos destinos turísticos, com uma estratégia clara de incorporação de conteúdos gerados pelos utilizadores (CGU) na Internet. Perante esta realidade, as Destination Management Organization – Organizações de Gestão de Destinos (DMO), como organizações dinâmicas, cujo objetivo é a promoção dos destinos turísticos têm que se adaptar de forma a enquadrar-se perante os desafios colocados por este novo paradigma de interação e comunicação. O trabalho apresentado neste artigo faz uma análise da utilização de medias sociais por entidades ligadas ao destino turístico Serra da Estrela, identificando os adotados e, se existe alguma preocupação com a valorização de conteúdos gerados pelos utilizadores. A metodologia utilizada foi baseada na construção de uma grelha de observação, onde foram registados pelos investigadores os dados recolhidos relativos a cada um dos websites das DMO consideradas.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)
title: Die Variabilitaet des kontinentalen Wasserkreislaufs in GRACE-Schwerefelddaten
Creators: name: Guentner, Andreas
name: Creutzfeldt, Benjamin
name: Dill, Robert
name: Barthelmes, Franz
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2012

description: System Erde; Vol. 2, Issue 1; ISSN 2191-8589
title: Der Reichs-Inquisitor; [1848?]
title: Reichs-Inquisitor: Ist Ihnen bekannt dass ausser Diesen, noch eine grosse Verschwörung unter den Wühlern in vollem Gange ist? Minister: Ich habe bereits die nöthigen Schritte gethan, und werde Ihnen später darüber Antwort sagen!
titleType: Subtitle
Creators: name: C., M.
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Mit Monogramm: CM (oder MC)
First Sample of H$α$+[O III] $λ$5007 Line Emitters at $z > 6$ Through JWST/NIRCam Slitless Spectroscopy: Physical Properties and Line Luminosity Functions
Creators: name: Sun, Fengwu
name: Egami, Eiichi
name: Pirzkal, Nor
name: Rieke, Marcia
name: Baum, Stefi
name: Boyer, Martha
name: Boyett, Kristan
name: Bunker, Andrew J.
name: Cameron, Alex J.
name: Curti, Mirko
name: Eisenstein, Daniel J.
name: Gennaro, Mario
name: Greene, Thomas P.
name: Jaffe, Daniel
name: Kelly, Doug
name: Koekemoer, Anton M.
name: Kumari, Nimisha
name: Maiolino, Roberto
name: Maseda, Michael
name: Perna, Michele
name: Rest, Armin
name: Robertson, Brant E.
name: Schlawin, Everett
name: Smit, Renske
name: Stansberry, John
name: Sunnquist, Ben
name: Tacchella, Sandro
name: Williams, Christina C.
name: Willmer, Christopher N. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a sample of four emission-line galaxies at $z=6.11-6.35$ that were serendipitously discovered using the commissioning data for the JWST/NIRCam wide-field slitless spectroscopy (WFSS) mode. One of them (at $z=6.11$) has been reported previously while the others are new discoveries. These sources are selected by the secure detections of both [O III] $λ$5007 and H$α$ lines with other fainter lines tentatively detected in some cases (e.g., [O II] $λ$3727, [O III] $λ$4959). In the [O III]/H$β$ - [N II]/H$α$ Baldwin-Phillips-Terlevich diagram, these galaxies occupy the same parameter space as that of $z\sim2$ star-forming galaxies, indicating that they have been enriched rapidly to sub-solar metallicities ($\sim$0.4 $Z_{\odot}$), similar to galaxies with comparable stellar masses at much lower redshifts. The detection of strong H$α$ lines suggests a higher ionizing photon production efficiency within galaxies in the early Universe. We find brightening of the [O III] $λ$5007 line luminosity function (LF) from $z=3$ to 6, and weak or no redshift evolution of the H$α$ line LF from $z=2$ to 6. Both LFs are under-predicted at $z\sim6$ by a factor of $\sim$10 in certain cosmological simulations. This further indicates a global Ly$α$ photon escape fraction of 7-10% at $z\sim6$, slightly lower than previous estimates through the comparison of the UV-derived star-formation rate density and Ly$α$ luminosity density. Our sample recovers $66^{+128}_{-44}$% of $z=6.0-6.6$ galaxies in the survey volume with stellar masses greater than $5\times10^8$ $M_{\odot}$, suggesting the ubiquity of strong H$α$ and [O III] line emitters in the Epoch of Reionization, which will be further uncovered in the era of JWST.
description: 26 pages, 11 figures, accepted for publication in ApJ on May 11, 2023
Impact of dark matter self-scattering on its relic abundance
Creators: name: Hryczuk, Andrzej
name: Laletin, Maxim
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Elastic self-scatterings do not change the number of dark matter particles and as such have been neglected in the calculation of its relic abundance. In this work we highlight the scenarios where the presence of self-scatterings has a significant impact on the effectiveness of annihilation processes through the modification of dark matter momentum distribution. We study a few example freeze-out scenarios involving resonant and sub-threshold annihilations, as well as a model with an additional source of dark matter particles from the decays of a heavier mediator state. Interestingly, when the calculation is performed at the level of dark matter momentum distribution function, we find that the injection of additional energetic dark matter particles onto the thermal population can lead to a $\textit{decrease}$ of its final relic abundance.
description: 13 pages, 8 figures; matches published version
Building blocks for complex tasks: Robust generative event extraction for radiology reports under domain shifts
Creators: name: Zhou, Sitong
name: Yetisgen, Meliha
name: Ostendorf, Mari
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This paper explores methods for extracting information from radiology reports that generalize across exam modalities to reduce requirements for annotated data. We demonstrate that multi-pass T5-based text-to-text generative models exhibit better generalization across exam modalities compared to approaches that employ BERT-based task-specific classification layers. We then develop methods that reduce the inference cost of the model, making large-scale corpus processing more feasible for clinical applications. Specifically, we introduce a generative technique that decomposes complex tasks into smaller subtask blocks, which improves a single-pass model when combined with multitask training. In addition, we leverage target-domain contexts during inference to enhance domain adaptation, enabling use of smaller models. Analyses offer insights into the benefits of different cost reduction strategies.
Relations between Short Range and Long Range Ising models
Creators: name: Angelini, Maria Chiara
name: Parisi, Giorgio
name: Ricci-Tersenghi, Federico
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We perform a numerical study of the long range (LR) ferromagnetic Ising model with power law decaying interactions ($J \propto r^{-d-σ}$) both on a one-dimensional chain ($d=1$) and on a square lattice ($d=2$). We use advanced cluster algorithms to avoid the critical slowing down. We first check the validity of the relation connecting the critical behavior of the LR model with parameters $(d,σ)$ to that of a short range (SR) model in an equivalent dimension $D$. We then study the critical behavior of the $d=2$ LR model close to the lower critical $σ$, uncovering that the spatial correlation function decays with two different power laws: the effect of the subdominant power law is much stronger than finite size effects and actually makes the estimate of critical exponents very subtle. By including this subdominant power law, the numerical data are consistent with the standard renormalization group (RG) prediction by Sak, thus making not necessary (and unlikely, according to Occam's razor) the recent proposal by Picco of having a new set of RG fixed points, in addition to the mean-field one and the SR one.
description: 25 pages, 8 figures
title: GNSS-Radiookkultation : Globale atmosphaerische Klimauntersuchungen mit Signalen von Navigationssatelliten
Creators: name: Wickert, Jens
name: Schmidt, Torsten
name: Heise, Stefan
name: Arras, Christina
name: Beyerle, Georg
name: Zus, Florian
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2012

description: System Erde; Vol. 2, Issue 1; ISSN 2191-8589
Análise dos Websites de Turismo Oficial das Cidades Sede da Copa do Mundo de Futebol de 2014 no Brasil
Creators: name: Díaz Luque, Pablo
name: Corrêa, Cynthia Harumy Watanabe
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: As empresas do setor turístico têm-se beneficiado com a introdução das Tecnologias da Informação e da Comunicação, em particular, da Internet, ao impulsionar as práticas de Comércio eletrônico e a divulgação de informação sobre destinos turísticos para atrair potenciais turistas. Como o Brasil se organiza para sediar megaeventos esportivos nos próximos anos, torna-se fundamental investir na promoção internacional do país via Internet. Nesse caso, apresenta-se um estudo realizado por pesquisadores do Brasil e da Espanha com o objetivo de analisar o estado dos websites de turismo oficial das cidades sede da Copa do Mundo de Futebol de 2014. Trata-se de um estudo baseado em revisão de literatura e nas análises dos websites das doze cidades anfitriãs, com foco em cinco aspectos: tipologia de Web, conteúdo informativo, interatividade, comercialização e idiomas. Entre os resultados, constata-se que um terço das páginas Web é destinado exclusivamente à promoção turística, que são poucos os canais de comunicação interativos ofertados que praticamente não há comércio eletrônico e que há uma deficiência na divulgação de informação em outros idiomas. Há destaque para o conteúdo informativo, capaz de atender públicos com interesses diversificados.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)
A detail-enhanced sampling strategy in Hadamard single-pixel imaging
Creators: name: Cai, Yan
name: Li, Shijian
name: Zhang, Wei
name: Wu, Hao
name: Yao, Xu-ri
name: Zhao, Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Hadamard single-pixel imaging (HSI) is an appealing imaging technique due to its features of low hardware complexity and industrial cost. To improve imaging efficiency, many studies have focused on sorting Hadamard patterns to obtain reliable reconstructed images with very few samples. In this study, we present an efficient HSI imaging method that employs an exponential probability function to sample Hadamard spectra along a direction with better energy concentration for obtaining Hadamard patterns. We also propose an XY order to further optimize the pattern-selection method with extremely fast Hadamard order generation while retaining the original performance. We used the compressed sensing algorithm for image reconstruction. The simulation and experimental results show that these pattern-selection method reliably reconstructs objects and preserves the edge and details of images.
description: 14 pages, 12 figures,1 table
Power efficient carry propagate adder
Creators: name: Kumre, Laxmi
name: Somkuwar, Ajay
name: Agnihotri, Ganga
Publisher: name: arXiv
Year: 2013
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Here we describe the design details and performance of proposed Carry Propagate Adder based on GDI technique. GDI technique is power efficient technique for designing digital circuit that consumes less power as compare to most commonly used CMOS technique. GDI also has an advantage of minimum propagation delay, minimum area required and less complexity for designing any digital circuit. We designed Carry Propagate Adder using GDI technique and compared its performance with CMOS technique in terms of area, delay and power dissipation. Circuit designed using CADENCE EDA tool and simulated using SPECTRE VIRTUOSO tool at 0.18m technology. Comparative performance result shows that Carry Propagate Adder using GDI technique dissipated 55.6% less power as compare to Carry Propagate Adder using CMOS technique.
description: 10 Pages, 10 figures
title: Klima- und Magnetfeldvariationen waehrend der letzten Eiszeit : Das Laschamp-Ereignis vor 41 000 Jahren
Creators: name: Nowaczyk, Norbert
name: Arz, Helge
name: Frank, Ute
name: Kind, Jessica
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2012

description: System Erde; Vol. 2, Issue 1; ISSN 2191-8589
Imprint of primordial gravitational wave with extremely low frequency on gravitational lens system
Creators: name: Liu, Wenshuai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Primordial gravitational waves with extremely low frequency are expected to origin from inflation in the early Universe. The detection of such kind of gravitational waves is of great significance to verify the inflationary theory and determine the energy scale of inflation. B-mode of polarization of cosmic microwave background shows to be a promising probe of extremely low frequency primordial gravitational wave. In order to find a complementary observational feature induced by primordial gravitational wave with extremely low frequency, we propose an alternative way of detection by investigating the effect of primordial gravitational wave with extremely low frequency on a gravitational lens system with a non-aligned source-deflector-observer configuration. The results show that, with a series of chosen parameters, gravitational lens system with perturbation from extremely low frequency primordial gravitational wave could induce time delay which could deviate from the time delay deduced from theoretical model as much as about one hundred percent, meaning that gravitational lens system with a non-aligned configuration could serve as a potential long-base-line detector of extremely low frequency primordial gravitational wave.
description: 6 pages, 4 figures, accepted for publication in MNRAS
The role of entanglement for enhancing the efficiency of quantum kernels towards classification
Creators: name: Sharma, Diksha
name: Singh, Parvinder
name: Kumar, Atul
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum kernels are considered as potential resources to illustrate benefits of quantum computing in machine learning. Considering the impact of hyperparameters on the performance of a classical machine learning model, it is imperative to identify promising hyperparameters using quantum kernel methods in order to achieve quantum advantages. In this work, we analyse and classify sentiments of textual data using a new quantum kernel based on linear and full entangled circuits as hyperparameters for controlling the correlation among words. We also find that the use of linear and full entanglement further controls the expressivity of the Quantum Support Vector Machine (QSVM). In addition, we also compare the efficiency of the proposed circuit with other quantum circuits and classical machine learning algorithms. Our results show that the proposed fully entangled circuit outperforms all other fully or linearly entangled circuits in addition to classical algorithms for most of the features. In fact, as the feature increases the efficiency of our proposed fully entangled model also increases significantly.
TIC e Desempenho Económico – Uma revisão crítica aplicada à Hotelaria
Creators: name: Paço, Cidália
name: Cepeda, Juan Manuel
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Este artigo tem como principal objetivo a análise das TIC e a sua relação com o desempenho económico utilizando como metodologia a modelização do processo produtivo e uma ampla revisão de literatura. Apresenta uma análise ao estado da investigação e algumas questões de investigação pertinentes. Desta revisão emergem três conclusões. Primeira, o paradoxo da produtividade foi revisto e um grande número de estudos têm documentado o significativo impacte dos investimentos em TIC sobre a produtividade das empresas, setores e países mostrando que aquilo que os computadores fazem de facto aparece nas estatísticas sobre produtividade. Segunda, embora a chamada Nova Economia e os elevados retornos das TIC tenham captado a atenção dos média no final dos anos 90, os investimentos em TIC têm vindo a aumentar a produtividade há mais de duas décadas. Terceira, embora os retornos dos investimentos em TIC sejam, em média, positivos existe uma vasta gama de desempenho entre as diferentes empresas com algumas a obterem resultados muito melhores do que outras, explicado em parte devido a diferenças idiossincráticas entre elas que se traduzem em diferentes oportunidades de utilizar as TIC de modo produtivo. Em suma, as TIC não são simplesmente uma ferramenta para a automatização dos processos mas, mais importante que isso, algo que facilita as mudanças organizacionais e que pode conduzir a ganhos de produtividade adicionais.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)
MAP-SNN: Mapping Spike Activities with Multiplicity, Adaptability, and Plasticity into Bio-Plausible Spiking Neural Networks
Creators: name: Yu, Chengting
name: Du, Yangkai
name: Chen, Mufeng
name: Wang, Aili
name: Wang, Gaoang
name: Li, Erping
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Spiking Neural Network (SNN) is considered more biologically realistic and power-efficient as it imitates the fundamental mechanism of the human brain. Recently, backpropagation (BP) based SNN learning algorithms that utilize deep learning frameworks have achieved good performance. However, bio-interpretability is partially neglected in those BP-based algorithms. Toward bio-plausible BP-based SNNs, we consider three properties in modeling spike activities: Multiplicity, Adaptability, and Plasticity (MAP). In terms of multiplicity, we propose a Multiple-Spike Pattern (MSP) with multiple spike transmission to strengthen model robustness in discrete time-iteration. To realize adaptability, we adopt Spike Frequency Adaption (SFA) under MSP to decrease spike activities for improved efficiency. For plasticity, we propose a trainable convolutional synapse that models spike response current to enhance the diversity of spiking neurons for temporal feature extraction. The proposed SNN model achieves competitive performances on neuromorphic datasets: N-MNIST and SHD. Furthermore, experimental results demonstrate that the proposed three aspects are significant to iterative robustness, spike efficiency, and temporal feature extraction capability of spike activities. In summary, this work proposes a feasible scheme for bio-inspired spike activities with MAP, offering a new neuromorphic perspective to embed biological characteristics into spiking neural networks.
Carbon-enhanced Metal-poor Stars in SDSS/SEGUE. II. Comparison of CEMP Star Frequencies with Binary Population Synthesis Models
Creators: name: Lee, Young Sun
name: Suda, Takuma
name: Beers, Timothy C.
name: Lucatello, Sara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a comparison of the frequencies of carbon-enhanced metal-poor (CEMP) giant and main-sequence turnoff stars, selected from the Sloan Digital Sky Survey and the Sloan Extension for Galactic Understanding and Exploration, with predictions from asymptotic giant-branch (AGB) mass-transfer models. We consider two initial mass functions (IMFs)-a Salpeter IMF, and a mass function with a characteristic mass of 10 solar mass. These comparisons indicate good agreement between the observed CEMP frequencies for stars with [Fe/H] > -1.5 and a Salpeter IMF, but not with an IMF having a higher characteristic mass. Thus, while the adopted AGB model works well for low-mass progenitor stars, it does not do so for high-mass progenitors. Our results imply that the IMF shifted from high- to low-mass dominated in the early history of the Milky Way, which appears to have occurred at a "chemical time" between [Fe/H] = -2.5 and [Fe/H] = -1.5. The corrected CEMP frequency for the turnoff stars with [Fe/H] < -3.0 is much higher than the AGB model prediction from the high-mass IMF, supporting the previous assertion that one or more additional mechanisms, not associated with AGB stars, are required for the production of carbon-rich material below [Fe/H] = -3.0. [abridged]
description: 10 pages, 4 figures. Submitted to ApJ
Dynamic path dependence of phase behaviors in dense active system
Creators: name: Chen, Lu
name: Zhang, Bokai
name: Tu, Z. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: There are rich emergent phase behaviors in non-equilibrium active systems. Flocking and clustering are two representative dynamic phases. The relationship between these two phases is still unclear. In the paper, we numerically investigate the evolution of flocking and clustering in a system consisting of self-propelled particles with active reorientation. We consider the interplay between flocking and clustering phases under different initial states, and observe an unstable domain in order parameters phase diagrams due to initial states even in the absence of an explicit attraction. This point is different from the previous finding that active angular fluctuations lead to an earlier breakdown of collective motion and the emergence of a new bi-stable regime in the aligned active particles [R.Grossmann et al, New J. Phys.073033,14 (2012)]. In particular, we find that the existence of bi-stable states is due to the diversity of dynamic paths arising from different initial states. By increasing (decreasing) the initial degree of ordering, the bi-stable state can be shifted to a more ordered flocking (disordered clustering) state. These results enlighten us pave the way to manipulate emergent behaviors and collective motions of active system.
description: 8 pages, 8 figures
Gluing of Lorentzian length spaces and the causal ladder
Creators: name: Rott, Felix
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C23 (Primary), 53C50, 53B30, 51F99, 51K10 (Secondary)

description: We investigate the compatibility of Lorentzian amalgamation with various properties of Lorentzian pre-length spaces. In particular, we give conditions under which gluing of Lorentzian length spaces yields again a Lorentzian length space and we give criteria which preserve many steps of the causal ladder. We conclude with some thoughts on the causal properties which seem not so easily transferable.
description: 27 pages, 4 figures
Effects of holidays on tourists: a review and directions for future research
Creators: name: Lima, Joana
name: Eusébio, Celeste
name: Varum, Celeste Amorim
Publisher: name: Journal of Tourism & Development
Year: 2012

description: Tourism offers opportunities to explore new environments and to participate in new situations, which may originate several effects on tourists. The purpose of this paper is to review the empirical literature that analyses the effects of holidays for tourists, with the objective of identifying the key elements and dimensions to consider in this field. To accomplish this objective, electronic searches were conducted using a specialist research database, SCOPUS, resulting in eighteen scientific articles considered as directly relevant to the subject matter of the paper. From this review it can be concluded (i) a significant evolution of research on this topic since the 90’s; (ii) the predominance of quantitative methodologies for analysing the effects of vacation travel on tourists, particularly some effects that already have some scales developed for its measure; (iii) the existence of a gap in the study of the effects of tourism in families; and (iv) that the most frequently included dimensions of vacation travel effects on tourists are those associated with wellbeing, behaviour and emotional dimensions. The review of literature undertaken provides an analysis of the evolution of published research and also helps to set up research pathways for the future.
description: Journal of Tourism & Development, vol. 1 n.º 17/18 (2012)
Modeling Multiple Views via Implicitly Preserving Global Consistency and Local Complementarity
Creators: name: Li, Jiangmeng
name: Qiang, Wenwen
name: Zheng, Changwen
name: Su, Bing
name: Razzak, Farid
name: Wen, Ji-Rong
name: Xiong, Hui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: While self-supervised learning techniques are often used to mining implicit knowledge from unlabeled data via modeling multiple views, it is unclear how to perform effective representation learning in a complex and inconsistent context. To this end, we propose a methodology, specifically consistency and complementarity network (CoCoNet), which avails of strict global inter-view consistency and local cross-view complementarity preserving regularization to comprehensively learn representations from multiple views. On the global stage, we reckon that the crucial knowledge is implicitly shared among views, and enhancing the encoder to capture such knowledge from data can improve the discriminability of the learned representations. Hence, preserving the global consistency of multiple views ensures the acquisition of common knowledge. CoCoNet aligns the probabilistic distribution of views by utilizing an efficient discrepancy metric measurement based on the generalized sliced Wasserstein distance. Lastly on the local stage, we propose a heuristic complementarity-factor, which joints cross-view discriminative knowledge, and it guides the encoders to learn not only view-wise discriminability but also cross-view complementary information. Theoretically, we provide the information-theoretical-based analyses of our proposed CoCoNet. Empirically, to investigate the improvement gains of our approach, we conduct adequate experimental validations, which demonstrate that CoCoNet outperforms the state-of-the-art self-supervised methods by a significant margin proves that such implicit consistency and complementarity preserving regularization can enhance the discriminability of latent representations.
description: Accepted by IEEE Transactions on Knowledge and Data Engineering (TKDE) 2022; Refer to https://ieeexplore.ieee.org/document/9857632
Os parques eólicos no espaço rural: impactes na experiência dos visitantes
Creators: name: Sousa, Ana João Gaspar De
name: Kastenholz, Elisabeth
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Com a crescente importância do turismo como elemento-chave capaz de promover o desenvolvimento socioeconómico e valorizar as áreas rurais, há que considerar os possíveis impactes nesses territórios, resultantes da competição pelo uso dos “bens comuns” com outros sectores de atividade em expansão no espaço rural, caso da exploração da energia do “vento” em parques eólicos. Com este trabalho iremos investigar quais as perceções dos visitantes acerca da presença destes elementos num destino turístico. Procuramos, assim, compreender o potencial de integração do sector do turismo com o das energias renováveis, no sentido de valorizar, de uma forma sustentável, os recursos naturais existentes. Tal poderá contribuir para criar novas oportunidades ao nível da oferta turística local e para melhorar a experiência turística rural. Os resultados deste estudo qualitativo exploratório, pioneiro em Portugal sobre esta temática, sugerem que, de momento, os parques eólicos parecem ser percecionados como elementos neutros num destino rural – caso da aldeia histórica de Linhares da Beira - não revelando ter particular influência na experiência turística dos visitantes.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)
Propagation of a realistic magnetar jet through binary neutron star merger medium and implications for short gamma-ray bursts
Creators: name: Soares, Gustavo
name: Bosch, Pablo
name: Lazzati, Davide
name: Mösta, Philipp
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of short gamma-ray bursts (sGRBs) is associated with outflows powered by the remnant of a binary neutron star merger. This remnant can be either a black hole or a highly magnetized, fastly spinning neutron star, also known as a magnetar. Here, we present the results of two relativistic magnetohydrodynamical (RMHD) simulations aimed at investigating the large-scale dynamics and propagation of magnetar collimated outflows through the medium surrounding the remnant. The first simulation evolves a realistic jet by injecting external simulation data, while the second evolves an analytical model jet with similar properties for comparison. We find that both outflows remain collimated and successfully emerge through the static medium surrounding the remnant. However, they fail to attain relativistic velocities and only reach a mean maximum speed of ~0.7c for the realistic jet, and ~0.6c for the analytical jet. We also find that the realistic jet has a much more complex structure. The lack of highly relativistic speeds, that makes these jets unsuitable as short GRB sources, is due to numerical limitations and not general to all possible magnetar outflows. A jet like the one we study, however, could give rise to or augment a blue kilonova component. In addition, it would make the propagation of a relativistic jet easier, should one be launched after the neutron star collapses into a black hole.
description: 11 pages, 7 figures, accepted to ApJ
Photo-oxidation of Graphene in the Presence of Water
Creators: name: Mitoma, Nobuhiko
name: Nouchi, Ryo
name: Tanigaki, Katsumi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Oxygen molecules are found to exhibit non-negligible reactivity with graphene under strong light irradiation in the presence of water. The reaction is triggered by the laser Raman spectroscopy measurement itself, and the D band (ca. 1340 cm-1) becomes larger as the laser irradiation is prolonged. The electronic transport properties of the graphene derivative are also investigated and both the electron and hole mobility are found to be reduced. These results are attributed to oxidation of graphene. This primitive modification method can be exploited to manipulate the structural and electronic properties of graphene.
description: 22 pages including supporting information
Exact analytical solutions of second-order conformal hydrodynamics
Creators: name: Hatta, Yoshitaka
name: Noronha, Jorge
name: Xiao, Bo-Wen
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present some exact solutions of relativistic second-order hydrodynamic equations in theories with conformal symmetry. Starting from a spherically expanding solution in ideal hydrodynamics, we take into account general conformal second-order corrections, and construct, for the first time, fully analytical axisymmetric exact solutions including the case with nonzero vorticity. These solutions are time-reversible despite having a nonvanishing shear stress tensor and provide a useful quantitative measure of the second-order effects in relativistic hydrodynamics.
description: 5 pages, 3 figures. A few typo corrected
O impacte da qualidade dos destinos turísticos na satisfação dos visitantes: o caso do destino Figueira da Foz
Creators: name: Cardoso, José Manuel Oliveira
name: Carneiro, Maria João Aibéo
name: Eusébio, Celeste
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Este artigo analisa a relação entre a qualidade dos destinos turísticos e a satisfação dos visitantes. Para dar resposta a este objetivo desenvolveu-se um modelo que avalia o impacte da qualidade dos atributos do destino e da qualidade total no grau de satisfação dos visitantes. Este modelo foi aplicado ao destino Figueira da Foz, com base nos resultados obtidos num inquérito por questionário, em 2011, a 193 visitantes, que foi testado recorrendo à análise de regressão múltipla. Os resultados obtidos revelam claramente que a avaliação da qualidade de alguns dos atributos do destino e a avaliação da qualidade total influenciam de forma positiva o grau de satisfação dos visitantes com o destino. O artigo termina com algumas contribuições para o desenvolvimento dos destinos turísticos em geral e, no caso particular, para o desenvolvimento do destino Figueira da Foz.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)
STC-IDS: Spatial-Temporal Correlation Feature Analyzing based Intrusion Detection System for Intelligent Connected Vehicles
Creators: name: Cheng, Pengzhou
name: Han, Mu
name: Li, Aoxue
name: Zhang, Fengwei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Intrusion detection is an important defensive measure for automotive communications security. Accurate frame detection models assist vehicles to avoid malicious attacks. Uncertainty and diversity regarding attack methods make this task challenging. However, the existing works have the limitation of only considering local features or the weak feature mapping of multi-features. To address these limitations, we present a novel model for automotive intrusion detection by spatial-temporal correlation features of in-vehicle communication traffic (STC-IDS). Specifically, the proposed model exploits an encoding-detection architecture. In the encoder part, spatial and temporal relations are encoded simultaneously. To strengthen the relationship between features, the attention-based convolutional network still captures spatial and channel features to increase the receptive field, while attention-LSTM builds meaningful relationships from previous time series or crucial bytes. The encoded information is then passed to detector for generating forceful spatial-temporal attention features and enabling anomaly classification. In particular, single-frame and multi-frame models are constructed to present different advantages respectively. Under automatic hyper-parameter selection based on Bayesian optimization, the model is trained to attain the best performance. Extensive empirical studies based on a real-world vehicle attack dataset demonstrate that STC-IDS has outperformed baseline methods and obtains fewer false-alarm rates while maintaining efficiency.
In den Armen liegen sich Beide, Und küssen sich vor Freude; [1848?]
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Karikatur des Abgeordneten der Frankfurter Nationalversammlung Heinrich von Gagern, der vom Abgeordneten Richter widerstrebend umarmt wird
Thin Film Charged Particle Trackers
Creators: name: Kim, Sungjoon
name: Berry, Vikas
name: Metcalfe, Jessica
name: Sumant, Anirudha V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Silicon tracking detectors have grown to cover larger surface areas up to hundreds of square meters, and are even taking over other sub-detectors, such as calorimeters. However, further improvements in tracking detector performance are more likely to arise from the ability to make a low mass detector comprised of a high ratio of active sensor to dead materials, where dead materials include electrical services, cooling, mechanical supports, etc. In addition, the cost and time to build these detectors is currently large. Therefore, advancements in the fundamental technology of tracking detectors may need to look at a more transformative approach that enables extremely large area coverage with minimal dead material and is easier and faster to build. The advancement of thin film fabrication techniques has the potential to revolutionize the next-to-next generation of particle detector experiments. Some thin film deposition techniques have already been developed and widely used in the industry to make LED screens for TV's and monitors. If large area thin film detectors on the order of several square meters can be fabricated with similar performance as current silicon technologies, they could be used in future particle physics experiments. This paper aims to review the key fundamental performance criteria of existing silicon detectors and past research to use thin films and other semi-conductor materials as particle detectors in order to explore the important considerations and challenges to pursue thin film detectors.
description: 32 pages, 15 figures
Compreender a influência dos aspetos naturais, organizacionais e de infraestruturação do Parque Natural da Madeira na satisfação dos turistas
Creators: name: Oliveira, Paulo Manuel De
name: Pereira, Pedro Telhado
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2012

description: Este artigo considera uma estimação Probit Ordenada de modo a verificarmos a influência de aspetos do Parque Natural da Madeira na satisfação que os turistas retiraram da visita à área de Parque, que não só é fator de equilíbrio biofísico como também o repositório da memória coletiva e identidade da Ilha da Madeira. O Parque corresponde a 2/3 da Ilha, cujo principal setor da economia é o turismo. Utilizando inquéritos individuais, os turistas foram sondados para avaliarem o seu grau de satisfação global e diversos aspetos da sua visita ao Parque. Os resultados denotam uma satisfação global do turista quanto à sua visita à área de Parque e, em particular, à paisagem que constitui o mais importante fator de atratividade turística. Ao invés, os turistas atribuem uma classificação baixa às infraestruturas, na área de Parque, aspeto que deverá ser melhorado de modo a garantir um aumento da sua satisfação e, simultaneamente, convertê-las numa mais-valia no mercado global muito competitivo. O conhecimento dos elementos de satisfação do turista permite-nos tirar conclusões quanto aos fatores de atratividade do destino a serem reforçados na promoção e os que necessitam de um investimento na sua melhoria.
description: Revista Turismo & Desenvolvimento, vol. 1 n.º 17/18 (2012)