cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hipervídeo na Preservação e Partilha de Memória Cultural e Etnográfica
Creators: name: Saraiva, António João
name: Damásio, Manuel José
name: Chambel, Teresa
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Representação Etnográfica
Tradução Cultural
Multimédia
Multilinearidade
Interactividade
Continuidade Narrativa
Desafios Estéticos e Retóricos

description: A cultura local originou sempre diversificados níveis de representação. Recolhas textuais, documentais, registos fotográficos, fonográficos ou cinematográficos, contribuíram para preservar a memória dos povos. No passado, estes registos ocorriam desligados entre si e assim permanecem nas bibliotecas e museus. As tecnologias digitais vêm alterar esta condição. A convergência dos diferentes meios associada à multilinearidade, oferece possibilidades mais complexas de representação. Dispomos pela primeira vez de dispositivos que podem integrar conteúdos provenientes de vários media e de os estruturar e apresentar de uma forma multilinear, oferecendo a possibilidade ao utilizador de intervir e de realizar explorações pessoais, através da interactividade. Muitos dos desafios que a integração multimédia vem colocar não se encontram ainda totalmente resolvidos. A solução para estas questões deverá vir de diferentes quadrantes. O nosso trabalho pretende apresentar-se como um contributo nesta direcção, ao mesmo tempo que se explora o hipervídeo para descobrir e compreender novos caminhos para a representação e partilha da cultura local.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Aplicações Interactivas
description: 19
description: 28
description: António João Saraiva, Manuel José Damásio, and Teresa Chambel
description: Representação Etnográfica, Tradução Cultural, Multimédia, Multilinearidade, Interactividade, Continuidade Narrativa, Desafios Estéticos e Retóricos
IPERION HS D7.6 Report on engagement with user communities and on user research needs
Creators: name: Zayas, Nieves Charle
Publisher: name: Zenodo
Year: 2024
Subjects: subject: training
subject: engagement
subject: heritage science
subject: Built environment
subject: Humanities
subject: FOS: Humanities
subject: Paleoanthropology
subject: Social sciences
subject: FOS: Social sciences
subject: Palaeontology
subject: Archaeology
subject: Anthropology
subject: FOS: Sociology

description: This Deliverable, D7.6, is part of Work Package 7 “Training and Engagement” which aims to expand the service portfolio and widen service coverage for new user communities. The new user communities include the fields of social sciences and humanities; built heritage; palaeontology and palaeoanthropology; and archaeology. These are widely varying and disparate groups, with different types of internal organisation and different degrees of coordination as well as different levels of engagement with scientific research. Here, we propose a plan for engagement with new communities. Some strategies are common to the four new user communities. This maximises effectiveness and impact and minimises duplication. It will also allow us to easily extend our strategy to any further future new user groups. However, we recognise that the differences between the groups mean that we will need flexible strategies that take into account these dissimilarities. In all cases, we recognise the importance of two-way dialogue to seek the opinions of members of the user groups and the need to adjust IPERION HS’s offering to take account of the needs of the different groups. We propose to monitor the engagement of members of the different groups as they request Trans-National Access and calculate Key Performance Indicators that will allow us to monitor the engagement of new user communities compared to more established users.
Sketch-a-Doc: Sketch a Document to Find It
Creators: name: Alves, Filipe Rodolfo
name: Fonseca, Manuel João
name: Gonçalves, Daniel
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Document Retrieval
Sketches
Calligraphic Interfaces
Personal Information Management

description: With the vast amount of documents users tend to accumulate in their hard drives, it is natural that they often forget where certain file is stored or even its name. However, sometimes they still recall a mental image of the document's layout. We developed a new approach to document retrieval that capitalizes on human visual memory to help users find their personal documents. The users can sketch the layout of the document using a calligraphic interface and the system will present them with those that match that sketch. Documents are processed to extract its relevant features, blocks are segmented and classified according to their contents and a description of the layout is created. We described the document in two different ways: grid-based and semantic-based. The interface allows the user to choose from each of this search methods and includes also a complementary query by example mechanism.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Aplicações Interactivas
description: 29
description: 34
description: Filipe Rodolfo Alves, Manuel João Fonseca, and Daniel Gonçalves
description: Document Retrieval, Sketches, Calligraphic Interfaces, Personal Information Management
Convolutional Neural Networks for Automatic Meter Reading
Creators: name: Laroca, Rayson
name: Barroso, Victor
name: Diniz, Matheus A.
name: Gonçalves, Gabriel R.
name: Schwartz, William Robson
name: Menotti, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we tackle Automatic Meter Reading (AMR) by leveraging the high capability of Convolutional Neural Networks (CNNs). We design a two-stage approach that employs the Fast-YOLO object detector for counter detection and evaluates three different CNN-based approaches for counter recognition. In the AMR literature, most datasets are not available to the research community since the images belong to a service company. In this sense, we introduce a new public dataset, called UFPR-AMR dataset, with 2,000 fully and manually annotated images. This dataset is, to the best of our knowledge, three times larger than the largest public dataset found in the literature and contains a well-defined evaluation protocol to assist the development and evaluation of AMR methods. Furthermore, we propose the use of a data augmentation technique to generate a balanced training set with many more examples to train the CNN models for counter recognition. In the proposed dataset, impressive results were obtained and a detailed speed/accuracy trade-off evaluation of each model was performed. In a public dataset, state-of-the-art results were achieved using less than 200 images for training.
Dissipative Abelian Sandpiles and Random Walks
Creators: name: Vanderzande, C.
name: Daerden, F.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that the dissipative Abelian sandpile on a graph L can be related to a random walk on a graph which consists of L extended with a trapping site. From this relation it can be shown, using exact results and a scaling assumption, that the dissipative sandpiles' correlation length exponent νalways equals 1/d_w, where d_w is the fractal dimension of the random walker. This leads to a new understanding of the known results that ν=1/2 on any Euclidean lattice. Our result is however more general and as an example we also present exact data for finite Sierpinski gaskets which fully confirm our predictions.
description: 10 pages, 1 figure
Visualização em Ambiente Virtual da Execução Gráfica de uma Cobertura: uma Aplicação Didáctica
Creators: name: Sampaio, Alcínia Z.
name: Cruz, Carlos Oliveira
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Simulação visual
realidade virtual
ensino
representação gráfica

description: Esta comunicação descreve a aplicação de tecnologias de modelação geométrica e de realidade virtual no desenvolvimento de um modelo didáctico relacionado com o traçado da cobertura de edifícios. O modelo apoia a exposição da matéria de representação cotada aplicada ao desenho de coberturas. No contexto desta temática o aluno é solicitado a efectuar a representação plana da cobertura, tendo como base um entendimento tridimensional do processo construtivo associado. O modelo virtual desenvolvido apresenta o modo de execução de uma cobertura utilizando os elementos gráficos usuais no traçado plano mas visualizados na sua disposição espacial. A aplicação prática do modelo virtual tem como objectivo principal o apoio a disciplinas num ensino presencial. A utilização de técnicas de realidade virtual no desenvolvimento de aplicações com um carácter didáctico traz novas perspectivas ao ensino em Engenharia.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Aplicações Interactivas
description: 35
description: 40
description: Alcínia Z. Sampaio and Carlos Oliveira Cruz
description: Simulação visual, realidade virtual, ensino, representação gráfica
Conclusive Precision Bounds for SU(1,1) Interferometers
Creators: name: You, Chenglong
name: Adhikari, Sushovit
name: Ma, Xiaoping
name: Sasaki, Masahide
name: Takeoka, Masahiro
name: Dowling, Jonathan P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we revisit the quantum Fisher information (QFI) calculation in SU(1,1) interferometer considering different phase configurations. When one of the input modes is a vacuum state, we show by using phase averaging, different phase configurations give same QFI. In addition, by casting the phase estimation as a two-parameter estimation problem, we show that the calculation of the quantum Fisher information matrix (QFIM) is necessary in general. Particularly, within this setup, the phase averaging method is equivalent to a two parameter estimation problem. We also calculate the phase sensitivity for different input states using QFIM approach.
description: 6 pages, 1 figure
You Move You Interact: Developing a dancing performance system for full body interaction
Creators: name: Moura, João Martinho
name: Sousa, Jorge
name: Branco, Pedro
name: Marcos, Adérito Fernandes
Publisher: name: The Eurographics Association
Year: 2021
Subjects: digital art
interactive art
expressive gesture
performing arts

description: You Move You Interact (YMYI) is an interactive installation, in which a user engages in a body language dialogue with an artificial system resulting in a performing interaction loop consisting of gestures and movements synchronised with virtual animations and sounds. The project aims at exploring an interactive stage, where the user is invited to develop his/her own creative inspiration based on the exploration of his/her body kinetic dimension.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Aplicações Interactivas
description: 41
description: 44
description: João Martinho Moura, Jorge Sousa, Pedro Branco, and Adérito Fernandes Marcos
description: digital art; interactive art; expressive gesture; performing arts
Absence of Two-Dimensional Bragg Glasses
Creators: name: Zeng, Chen
name: Leath, Paul L.
name: Fisher, Daniel S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The stability to dislocations of the elastic phase, or ``Bragg glass'', of a randomly pinned elastic medium in two dimensions is studied using the minimum-cost-flow algorithm for a disordered fully-packed loop model. The elastic phase is found to be unstable to dislocations due to the quenched disorder. The energetics of dislocations are discussed within the framework of renormalization group predictions as well as in terms of a domain wall picture.
description: 5 pages, REVTEX, 3 figures included. Further information can be obtained from chenz@physics.rutgers.edu
The ALMA-PILS survey: The first detection of doubly-deuterated methyl formate (CHD2OCHO) in the ISM
Creators: name: Manigand, S.
name: Calcutt, H.
name: Jørgensen, J. K.
name: Taquet, V.
name: Müller, H. S. P.
name: Coutens, A.
name: Wampfler, S. F.
name: Ligterink, N. F. W.
name: Drozdovskaya, M. N.
name: Kristensen, L. E.
name: van der Wiel, M. H. D.
name: Bourke, T. L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Studies of deuterated isotopologues of complex organic molecules can provide important constraints on their origin in regions of star formation. In particular, the abundances of deuterated species are very sensitive to the physical conditions in the environment where they form. Due to the low temperatures in regions of star formation, these isotopologues are enhanced to significant levels, making detections of multiply-deuterated species possible. However, for complex organic species, only the multiply-deuterated variants of methanol and methyl cyanide have been reported so far. The aim of this paper is to initiate the characterisation of multiply-deuterated variants of complex organic species with the first detection of doubly-deuterated methyl formate, CHD2OCHO. We use ALMA observations from the Protostellar Interferometric Line Survey (PILS) of the protostellar binary IRAS 16293-2422, in the spectral range of 329.1 GHz to 362.9 GHz. We report the first detection of doubly-deuterated methyl formate CHD2OCHO in the ISM. The D/H ratio of CHD2OCHO is found to be 2-3 times higher than the D/H ratio of CH2DOCHO for both sources, similar to the results for formaldehyde from the same dataset. The observations are compared to a gas-grain chemical network coupled to a dynamical physical model, tracing the evolution of a molecular cloud until the end of the Class 0 protostellar stage. The overall D/H ratio enhancements found in the observations are of the same order of magnitude as the predictions from the model for the early stages of Class 0 protostars. However, the higher D/H ratio of CHD2OCHO compared to the D/H ratio of CH2DOCHO is still not predicted by the model. This suggests that a mechanism is enhancing the D/H ratio of singly- and doubly-deuterated methyl formate that is not in the model, e.g. mechanisms for H-D substitutions.
description: Accepted for publication in A&A
Thrombin-induced platelet inhibition by 2′,4′-dihydroxychalcone and 2′,4′-dihydroxydihydrochalcone is mediated by inhibition of ROS production and Thromboxane synthase a activity: structure-activity relationship of polyphenol secondary metabolites from Empetrum nigrum
Creators: name: Fock, Ekaterina
name: Pronin, Nikita
name: Rukoyatkina, Natalia
name: Whaley, Anastasiia
name: Gambaryan, Stepan
name: Whaley, Andrei
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: In this study, we expanded our previous work by testing compounds 1–12 for their ability to inhibit platelet activation at low (30 µM) concentration by inhibition of ROS production, thromboxane synthase (TxS) activity, and activation of cyclic nucleotide pathways. We also investigated whether some of these compounds could potentiate the effects of P2Y12 ADP receptor inhibitor action and discussed possible structure-activity relationships of the tested compounds. We showed that at this concentration only compounds 7 and 12 significantly inhibited thrombin-induced platelet activation which was accompanied by inhibition of ROS production and thromboxane synthase activity. Correspondingly, these compounds significantly potentiated the inhibitory effect of cangrelor on thrombin-induced platelet activation. In some other cases, inhibition of ROS production and thromboxane synthase activity did not correlate with platelet inhibition, indicating that these compounds could affect some, still unidentified, activatory pathways in platelets that counteract their inhibitory effects.
On Micromechanical Parameter Identification With Integrated DIC and the Role of Accuracy in Kinematic Boundary Conditions
Creators: name: Rokoš, O.
name: Hoefnagels, J. P. M.
name: Peerlings, R. H. J.
name: Geers, M. G. D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Integrated Digital Image Correlation (IDIC) is nowadays a well established full-field experimental procedure for reliable and accurate identification of material parameters. It is based on the correlation of a series of images captured during a mechanical experiment, that are matched by displacement fields derived from an underlying mechanical model. In recent studies, it has been shown that when the applied boundary conditions lie outside the employed field of view, IDIC suffers from inaccuracies. A typical example is a micromechanical parameter identification inside a Microstructural Volume Element (MVE), whereby images are usually obtained by electron microscopy or other microscopy techniques but the loads are applied at a much larger scale. For any IDIC model, MVE boundary conditions still need to be specified, and any deviation or fluctuation in these boundary conditions may significantly influence the quality of identification. Prescribing proper boundary conditions is generally a challenging task, because the MVE has no free boundary, and the boundary displacements are typically highly heterogeneous due to the underlying microstructure. The aim of this paper is therefore first to quantify the effects of errors in the prescribed boundary conditions on the accuracy of the identification in a systematic way. To this end, three kinds of mechanical tests, each for various levels of material contrast ratios and levels of image noise, are carried out by means of virtual experiments. For simplicity, an elastic compressible Neo-Hookean constitutive model under plane strain assumption is adopted. It is shown that a high level of detail is required in the applied boundary conditions. This motivates an improved boundary condition application approach, which considers constitutive material parameters as well as kinematic variables at the boundary of the entire MVE as degrees of freedom in...
description: 37 pages, 25 figures, 2 tables, 2 algorithms
Manipulação de Artefactos Moveis Multimodais: Avaliação e Estudos Comportamentais em Contextos Reais
Creators: name: Reis, Tiago
name: Carriço, Luís
name: Sá, Marco De
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Interacção Multimodal
Dispositivos Moveis
Avaliação
Estudos Comportamentais
Contextos Reais

description: Tanto a avaliação de aplicações móveis, como estudos realizados em torno das mesmas devem ser conduzidos tendo em consideração o propósito das aplicações e os contextos nos quais serão utilizadas. Neste artigo apresentamos uma ferramenta de manipulação de artefactos móveis multimodais, a sua avaliação e um estudo comportamental conduzido com a mesma. Tanto a avaliação como o estudo foram conduzidos com um subconjunto de utilizadores finais da aplicação (estudantes). Estes responderam a um questionário, utilizando a ferramenta, em contextos reais (sala de aula, casa, parque, metro e carro) definidos por diferentes variáveis de contexto (dispositivo, ruído, iluminação, movimento, posição, utilização das mãos, tipo de conteúdos, limitações temporais, etc.). A avaliação apontou ao registo dos problemas de usabilidade da ferramenta, ao desempenho das diferentes modalidades nos diferentes contextos considerados e à aceitação da aplicação por parte dos utilizadores finais. O estudo permitiu-nos perceber que a forma como os utilizadores interagem com aplicações móveis varia de acordo com o contexto no qual estão inseridos. Identificamos padrões comportamentais, percebendo o impacto de algumas variáveis de contexto na escolha das modalidades de interacção (voz, gestos, teclado, ecrã táctil).
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 45
description: 53
description: Tiago Reis, Luís Carriço, and Marco de Sá
description: Interacção Multimodal, Dispositivos Moveis, Avaliação, Estudos Comportamentais, Contextos Reais
Lattice resonances under oblique light incidence on nanoparticle array
Creators: name: Babicheva, Viktoriia E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Ultra-thin optical structures, known as metasurfaces, have shown promising light controlling capability at the nanoscale. In this paper, we study their particular case, a periodic array of high-refractive-index nanoparticles with electric and magnetic resonances. The main result of the work is a numerical demonstration that the lattice effect in the periodic arrangement of nanoparticles changes the resonance position even if the resonances are above the diffraction wavelength (Rayleigh anomaly). We show that the disk resonance changes can be achieved not only by varying periods of the array under normal light incidence but also by changing the incident angle.
description: MRS Communications 2018
Análise Comparativa e Colaborativa para Artefactos Móveis
Creators: name: Duarte, Luís
name: Carriço, Luís
name: Sá, Marco De
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Dispositvos Móveis
Groupware
Performance e Monitorização de Ut

description: O artigo apresenta uma ferramenta de análise comparativa e colaborativa da utilização de artefactos móveis. Foram identificados três cenários relativamente à dimensão comparativa, cobrindo visualização simples de artefactos, reprodução do histórico de interacções e monitorização em tempo real. A dimensão colaborativa foi detalhada de acordo com dois cenários: a existência de um ecrã público e o uso de espaços virtuais partilhados. Apresentamos um caso de estudo no domínio da terapia comportamental cognitiva de forma a mostrar como a ferramenta se adequa num domínio real e como a sua utilização pôde melhorar o processo de terapia.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 55
description: 64
description: Luís Duarte, Luís Carriço, and Marco de Sá
description: Dispositvos Móveis, Groupware, Performance e Monitorização de Ut
Anomalous Outbursts of H 1743-322
Creators: name: Ghosh, Arindam
name: Chakrabarti, Sandip K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using black body and power-law photon counts of All Sky Monitor (ASM) in Rossi X-ray Timing Explorer (RXTE) satellite it has been established recently by us that there is a significant time lag between the infall timescales of two components in the Two-Component Advective Flow (TCAF) paradigm, where a standard slow moving Keplerian disc is surrounded by a fast moving halo. The time lag is clearly due to the difference in viscosity in the flow components and the size of the Keplerian disc may be considered to be proportional to the arrival time lag. In this paper, using RXTE/ASM (1.5-12 keV) data, we examine eight successive outbursts of the low-mass X-ray binary H 1743-322 since 2003 from a new angle. A dynamic photon index, Θ indicates that the size of the Keplerian disc is biggest during the brightest outburst of 2003. The size diminishes thereafter during subsequent weaker outbursts. These results are corroborated when two energy fluxes corresponding to the two flows are cross-correlated with reference to Θ. Moreover, Θ decides spectral transitions of any outburst. We show from the behaviour of Θ alone that the outburst of October 2008 was an anomalous outburst. In fact, each normal outburst was either preceded or followed by an otherwise premature outburst. This makes H 1743-322 an enigmatic source and a subject of further study.
Anyonic $\mathcal{PT}$ symmetry, drifting potentials and non-Hermitian delocalization
Creators: name: Longhi, S.
name: Pinotti, E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider wave dynamics for a Schrödinger equation with a non-Hermitian Hamiltonian $\mathcal{H}$ satisfying the generalized (anyonic) parity-time symmetry $\mathcal{PT H}= \exp(2 i φ) \mathcal{HPT}$, where $\mathcal{P}$ and $ \mathcal{T}$ are the parity and time-reversal operators. For a stationary potential, the anyonic phase $φ$ just rotates the energy spectrum of $\mathcal{H}$ in complex plane, however for a drifting potential the energy spectrum is deformed and the scattering and localization properties of the potential show intriguing behaviors arising from the breakdown of the Galilean invariance when $φ\neq 0$. In particular, in the unbroken $\mathcal{PT}$ phase the drift makes a scattering potential barrier reflectionless, whereas for a potential well the number of bound states decreases as the drift velocity increases because of a non-Hermitian delocalization transition.
description: 7 pages, 5 figures
Story Tags Contar histórias para etiquetar fotografias
Creators: name: Tomás, Nuno
name: Guerreiro, Tiago
name: Gonçalves, Daniel
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Fotografia
Tagging
'arrativas
Re
utilização
Interface
Utilizador

description: O aumento de informação multimédia ao longo dos últimos anos obrigou à criação de mecanismos que permitam organizar esse conteúdo através de descrições ou palavras-chave. Uma das principais formas de catalogar conteúdos é o tagging. Pode ser encontrado em sites como o Flickr para imagens ou o Del.icio.us para bookmarks. O utilizador é livre de associar tags ao conteúdo, conseguindo obter uma organização que possibilitará uma recuperação mais fácil. 'o entanto, o tagging é bastante pouco estruturado, podendo tornar difícil a sua utilização generalizada. Se classfiicar novos items é fácil, nada garante que as tags usadas são as mais indicadas, ou que se usam as mesmas tags em situações semelhantes. Problemas como como a polissemia, os sinónimos ou ainda o problema dos níveis básicos da linguagem tornam a taxa de reutilização de tags mais baixa, e dificultam a subsequente recuperação de items. Para resolver esses problemas, propomos uma solução baseada em narrativas. Todos nós contamos e estamos a habituados a ouvir histórias.'uma história, transmitimos muita informação e de forma estruturada. 'este trabalho, focados na gestão de fotografias digitais, construímos um sistema onde o utilizador estrutura o seu tagging contando histórias acerca das suas fotografias, podendo assim, para além de resolver os problemas apresentados, possibilitar uma maior reutilização das etiquetas (tags).
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 65
description: 73
description: Nuno Tomás, Tiago Guerreiro, and Daniel Gonçalves
description: Fotografia, Tagging, 'arrativas, Re-utilização, Interface, Utilizador
van Staaveren et al. (2024) Supplementary Material 1
Creators: name: Leishman, Emily
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300305
subject: Animal reproduction and breeding

description: The Resilient Dairy Genome Project (RDGP) is an international large-scale applied research project that aims to generate genomic tools to breed more resilient dairy cows. In this context, improving feed efficiency and reducing greenhouse gases from dairy is a high priority. The inclusion of traits related to feed efficiency (e.g., dry matter intake [DMI]) or greenhouse gases (e.g., methane emissions [CH4]) relies on available genotypes as well as high quality phenotypes. Currently, 7 countries (i.e., Australia, Canada, Denmark, Germany, Spain, Switzerland, and United States) contribute with genotypes and phenotypes including DMI and CH4. However, combining data are challenging due to differences in recording protocols, measurement technology, genotyping, and animal management across sources. In this study, we provide an overview of how the RDGP partners address these issues to advance international collaboration to generate genomic tools for resilient dairy. Specifically, we describe the current state of the RDGP database, data collection protocols in each country, and the strategies used for managing the shared data. As of February 2022, the database contains 1,289,593 DMI records from 12,687 cows and 17,403 CH4 records from 3,093 cows and continues to grow as countries upload new data over the coming years. No strong genomic differentiation between the populations was identified in this study, which may be beneficial for eventual across-country genomic predictions. Moreover, our results reinforce the need to account for the heterogeneity in the DMI and CH4 phenotypes in genomic analysis.
Exploration and evaluation of antioxidant activity in isolated phenolics from Jasminum scandens (retz) vahl
Creators: name: Malik, Afsin
name: Mithi, Faria Mannan
name: Ashrafi, Sania
name: Al-Mansur, Muhammad Abdullah
name: Ahsan, Monira
name: Hasan, Choudhury Mahmood
name: Azam, A.T.M. Zafrul
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: Given the widespread and established use of Jasminum scandens (Retz) Vahl, a member of the Oleacea family, this study aimed to identify and characterise secondary metabolites derived from the plant, with the objective of evaluating their potential biological activities. Using chromatographic separations techniques based on molecular weight and polarity, various VLC fractions of the plant were purified. These fractions yielded seven compounds- 2-(4-hydroxyphenyl)-ethanol (1), 2-(4-hydroxy-3-methoxy-phenyl)-ethanol (2), 1-(4-hydroxy-3-methoxy-phenyl)-1,2,3-propanetriol (3), 1-(4-hydroxy-3,5-dimethoxy-phenyl)-1,2,3-propanetriol (4), lupeol (5), β-sitosterol (6), and methyl linoleate (7), which have never been previously reported in this plant. Out of the seven identified compounds, compounds 3 and 4 had the greatest capacity to scavenge free radicals with IC50 values of 3.81 µg/ml and 4.08 µg/ml, respectively when compared to the standard Butylated Hydroxy Toluene (BHT) with IC50 value of 6.54 µg/ml.
Signature of Two-Component Advective Flow in several Black Hole candidates obtained through time-of-arrival analysis of RXTE/ASM Data
Creators: name: Ghosh, Arindam
name: Chakrabarti, Sandip K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study several Galactic black hole candidates using long-time RXTE/ASM X-ray data to search for telltale signatures of differences in viscous timescales in the two components used in the Two-Component Advective Flow (TCAF) paradigm. In high-mass X-ray binaries (HMXBs) mainly winds are accreted. This nearly inviscid and dominant sub-Keplerian flow falls almost freely towards the black hole. A standard Keplerian disc can form out of this sub-Keplerian matter in presence of a significant viscosity and could be small in size. However, in low-mass X-ray binaries (LMXBs), highly viscous and larger Keplerian accretion disc is expected to form inside the sub-Keplerian disc due to the Roche-lobe overflow. Due to two viscous timescales in these two components, it is expected to have a larger lag between the times-of-arrival of these components in LMXBs than that in HMXBs. Direct cross-correlation between the photon fluxes will not reveal this lag/delay since they lack linear dependence; however, they are coupled through the viscous processes which bring in both matter. To quantify the aforesaid time lag, we introduce an index (Θ), which is a proxy of the usual photon index (Γ). Thus, when Θ, being dynamically responsive to both fluxes, is considered as a reference, the arrival time lag between the two fluxes in LMXBs is found to be much larger than that in HMXBs. Our result establishes the presence of two dynamical components in accretion and shows that the Keplerian disc size indeed is smaller in HMXBs as compared to that in LMXBs.
PersonalNews: A Nossa Vida de Relance…
Creators: name: Antunes, Bruno
name: Guerreiro, Tiago
name: Gonçalves, Daniel
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Gestão de Informação pessoal
visualização
sumários
notícias

description: Com o aumento da quantidade de informação existente nos computadores pessoais, existe cada vez mais a necessidade de desenvolver novas formas de gerir essa informação. Apresentamos uma interface em que é possível visualizar e navegar de forma eficaz na informação pessoal contida num determinado computador pessoal, possibilitando a descoberta de padrões relevantes nessa informação. Isto é feito criando um jornal pessoal do utilizador, em que várias notícias descrevem os desenvolvimentos nos temas que mais interessaram o utilizador num dado intervalo de tempo. Essas notícias, automaticamente inferidas a partir dos documentos do utilizador, são dispostas no jornal de acordo com a sua importância relativa, dando ao utilizador de uma ideia dos temas que mais o interessaram e permite facilmente encontrar os documentos com eles relacionados.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 75
description: 80
description: Bruno Antunes, Tiago Guerreiro, and Daniel Gonçalves
description: Gestão de Informação pessoal, visualização, sumários, notícias
Non-linear flow modes of identified particles in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ALICE detector
Creators: name: Mohammadi, Naghmeh
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The non-linear flow modes, $v_{4,22}$, $v_{5,32}$ and $v_{6,33}$ as a function of transverse momentum ($p_{\mathrm{T}}$) have been measured for the first time in Pb--Pb collisions at $\sqrt{s_{\rm{NN}}} = 5.02$ TeV for identified particles, i.e. charged pions, kaons and (anti-)protons. These observables probe the contribution of the second and third initial anisotropy coefficients to the higher order flow harmonics. Interestingly, all the characteristic features observed in previous $p_{\mathrm{T}}$-differential as well as $p_{\mathrm{T}}$-integrated measurements (e.g. $v_{2}$ and $v_{3}$) for various particle species are present in these measurements, i.e. increase of magnitude with increasing centrality percentile, a mass ordering in the low $p_{\mathrm{T}}$ region and a particle type grouping in the intermediate $p_{\mathrm{T}}$ region. The results cover 0--1\% (ultra-central collisions), 10--20\% (mid-central collisions) and 40--50\% (mid-peripheral collisions) centrality intervals and allow to test models that attempt to describe initial conditions and the mode-coupling of different harmonics.
Evaluation Criteria of Software Visualization Systems used for Program Comprehension
Creators: name: Berón, Mario M.
name: Cruz, Daniela Da
name: Pereira, Maria João Varanda
name: Henriques, Pedro Rangel
name: Uzal, Roberto
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Program Comprehension
Software Visualization
Problem Domain
Program Domain
System Views
Evaluation Criteria

description: The program understanding task is usually very time and effort consuming. In a traditional way the code is inspected line by line by the user without any kind of help. But this becomes impossible for larger systems. Some software systems were created in order to generate automatically explanations, metrics, statistics and visualizations to describe the syntax and the semantics of programs. This kind of tools are called Program Comprehension Systems. One of the most important feature used in this kind of tool is the software visualization. We feel that it would be very useful to define criteria for evaluating visualization systems that are used for program comprehension. The main objective of this paper is to present a set of parameters to characterize Program Comprehension-Oriented Software Visualization Systems. We also propose new parameters to improve the current taxonomies in order to cover the visualization of the Problem Domain.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 81
description: 86
description: Mario M. Berón, Daniela da Cruz, Maria João Varanda Pereira, Pedro Rangel Henriques, and Roberto Uzal
description: Program Comprehension, Software Visualization, Problem Domain, Program Domain, System Views, Evaluation Criteria
Magnetic clusters formation in Li_{1-x}Ni_{1+x}O_2 compounds : experiments and numerical simulations
Creators: name: Mertz, D.
name: Ksari, Y.
name: Celestini, F.
name: Debierre, J. M.
name: Stepanov, A.
name: Delmas, C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The magnetic properties of Li_{1-x}Ni_{1+x}O_2 compounds with x ranging between 0.02 and 0.2 are investigated. Magnetization and ac susceptibility measured at temperatures between 2 K and 300 K reveal a high sensitivity to x, the excess Nickel concentration. We introduce a percolation model describing the formation of Ni clusters and use an Ising model to simulate their magnetic properties. Numerical results, obtained by a Monte-Carlo technique, are compared to the experimental data. We show the existence of a critical concentration, x_c = 0.136, locating the Ni percolation threshold. The system is superparamagnetic for xx_c. The 180 Ni-O-Ni inter-plane super-exchange coupling J_\perp \simeq -110K is confirmed to be the predominant magnetic interaction. From the low temperature behavior, we find a clear indication of a 90 Ni-O-Ni intra-plane antiferromagnetic interaction $J_\parallel \simeq -1.5K$ which implies magnetic frustration.
description: 6 pages, 9 figures. Submitted to PRB
Usability Study of the Gauntlet Wearable Interface
Creators: name: Romão, Teresa
name: Correia, Nuno
name: Martins, Tiago
name: Sommerer, Christa
name: Mignonneau, Laurent
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Evaluation
usability
wearable
ubiquitous
gaming
gauntlet

description: This paper presents and discusses the results of a usability test of a wearable interface for ubiquitous gaming. Originating from a concept of interface that allows intuitive and immersive interaction in mobile applications, untethered from location-specific hardware and software frameworks, a first, fully functional prototype has been built and publicly demonstrated. Usability tests have allowed us to formally register and examine users' reactions to the device in order to determine if the concept is valid as well as to uproot usability and wearability issues. Analysis of test results determines the direction to follow in our next design iteration.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Avaliação e Usabilidade
description: 87
description: 92
description: Teresa Romão, Nuno Correia, Tiago Martins, Christa Sommerer, and Laurent Mignonneau
description: Evaluation, usability, wearable, ubiquitous, gaming, gauntlet
Violation of ensemble equivalence in the antiferromagnetic mean-field XY model
Creators: name: Dauxois, Thierry
name: Holdsworth, Peter
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is well known that long-range interactions pose serious problems for the formulation of statistical mechanics. We show in this paper that ensemble equivalence is violated in a simple mean-field model of N fully coupled classical rotators with repulsive interaction (antiferromagnetic XY model). While in the canonical ensemble the rotators are randomly dispersed over all angles, in the microcanonical ensemble a bi-cluster of rotators separated by angle $π$, forms in the low energy limit. We attribute this behavior to the extreme degeneracy of the ground state: only one harmonic mode is present, together with N-1 zero modes. We obtain empirically an analytical formula for the probability density function for the angle made by the rotator, which compares extremely well with numerical data and should become exact in the zero energy limit. At low energy, in the presence of the bi-cluster, an extensive amount of energy is located in the single harmonic mode, with the result that the energy temperature relation is modified. Although still linear, $T = αU$, it has the slope $α\approx 1.3$, instead of the canonical value $α=2$.
description: 12 pages, Latex, 7 Figures
AniMAL: A user interface prototyper and animator for MAL interactor models
Creators: name: Guerreiro, Nuno
name: Mendes, Sandrine
name: Pinheiro, Vítor
name: Campos, José Creissac
Publisher: name: The Eurographics Association
Year: 2021
Subjects: dialogue analysis tool
user interface specifications
visual representations
prototyping

description: Engineering correct software is one of the grand challenges of computer science. Practical design and verification methodologies to ensure correct software can have a substantial impact on how programs are built by the industry. As human-machine systems become more functional, they also become more complex. Consequently, the interactions between the machine and its users becomes less predictable and more difficult to analyse. Using Model Checking it is possible to automatically analyse the behaviour of a modelled system. Hence, different authors have investigated the applicability of model checking to the analysis of human-machine interactions. The IVY workbench is a tool that supports system design and verification, by providing a model checking based integrated modelling and analysis environment. The tool is based around a plugin architecture, and although it features a verification results' analyser, it thus far lacked the ability to visually expose the sequence of events that lead to a system failure on a system's prototype. We propose the AniMAL plugin as an extension to the IVY workbench, providing automatic user interface prototyping and verification results' animation, while allowing thorough customisation.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Concepção de Interfaces
description: 93
description: 102
description: Nuno Guerreiro, Sandrine Mendes, Vítor Pinheiro, and José Creissac Campos
description: dialogue analysis tool, user interface specifications, visual representations, prototyping
Spin-Flip Transistor
Creators: name: Bauer, Gerrit E. W.
name: Nazarov, Yuli V.
name: Brataas, Arne
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recently developed semiclassical theory for magnetoelectronic circuits is applied to a transistor-like device consisting of a normal metal island and three magnetic terminals. The electric current between source and drain can be controlled by the magnetization of a ``base'' reservoir up to distances of the order of the spin-flip diffusion length.
description: Proceedings of NATO-ARW on Semiconductor Nanostructures, 5-9 February 2001, Queenstown, NZ, to be published in Physica E
Um Caso Prático de Reabilitação de um Editor de Jogos Móveis Utilizando o Paradigma Model- View-Controller
Creators: name: Cardoso, Bruno Miguel
name: Romão, Teresa
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Usabilidade
Interface de utilizador
padrão de arquitectura Model
View
Controller
produção industrial de videojogos
engenharia de software

description: O presente artigo pretende expor um caso prático relacionado com o processo de reabilitação de uma aplicação informática, cuja utilização havia sido descontinuada devido a problemas, generalizados e graves, na arquitectura do software e na interface com o utilizador. A referida aplicação, designada por 2D Game Editor, tinha como objectivo proporcionar-se como um canal de comunicação de trabalho e informação entre os membros de uma equipa de produção de videojogos para telemóvel. Para este fim, o programa pretendia oferecer uma interface de utilizador amigável através da qual o utilizador, o Game Designer, pudesse definir certos parâmetros e variáveis que eram, depois de trabalhados, passados para os profissionais responsáveis pela programação final do dito jogo. A reabilitação desta aplicação foi atingida com recurso a técnicas de engenharia do software, mais precisamente aplicando um padrão de arquitectura especifico – o Model-View-Controller – e através do redesenho da interface respeitando os princípios da usabilidade. Assim, este artigo descreve o processo de selecção do padrão de arquitectura; a sua aplicação ao caso particular do 2D Game Editor;, explora os benefícios que daqui advieram para a tarefa de redesenhar a interface de utilizador e comprova o sucesso desta intervenção de reabilitação descrevendo alguns testes de utilizador que foram realizados.
description: Interacção 2008 – Actas da 3a. Conferência Nacional em Interacção Pessoa-Máquina
description: Concepção de Interfaces
description: 109
description: 114
description: Bruno Miguel Cardoso and Teresa Romão
description: Usabilidade, Interface de utilizador, padrão de arquitectura Model-View-Controller, produção industrial de videojogos, engenharia de software
Level Spacing Distribution of Critical Random Matrix Ensembles
Creators: name: Nishigaki, Shinsuke M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider unitary invariant random matrix ensembles which obey spectral statistics different from the Wigner-Dyson, including unitary ensembles with slowly (~(log x)^2) growing potentials and the finite-temperature fermi gas model. If the deformation parameters in these matrix ensembles are small, the asymptotically translational-invariant region in the spectral bulk is universally governed by a one-parameter generalization of the sine kernel. We provide an analytic expression for the distribution of the eigenvalue spacings of this universal asymptotic kernel, which is a hybrid of the Wigner-Dyson and the Poisson distributions, by determining the Fredholm determinant of the universal kernel in terms of a Painleve VI transcendental function.
description: 5 pages, 1 figure, REVTeX; restriction on the parameter stressed, figure replaced, refs added (v2); typos (factors of pi) in (35), (36) corrected (v3); minor changes incl. title, version to appear in Phys.Rev.E (v4)