cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
3D Modeling and Integration of Heterogeneous Geo-data
Creators: name: Miola, Marianna
name: Cabiddu, Daniela
name: Pittaluga, Simone
name: Mortara, Michela
name: Vetuschi Zuccolini, Marino
name: Imitazione, Gianmario
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Representation of subsoil
3D modeling
Geostatistical analysis

description: This paper tackles the volumetric representation of geophysical and geotechnical data, gathered during exploration surveys of the subsoil. The creation of a 3D model as support to geological interpretation has to take into account the specificity of the diverse input data, that are heterogeneous. Some data are massive, but cover the domain unevenly, e.g., structured along dense differently spaced lines, while others are very sparse, e.g., borehole locations with soil sampling and CPTU (Piezocone Penetration Test) locations. In this work, we focus on the exploration and analysis of underwater deposits. After a discussion about the data typically acquired in an offshore campaign, we present an automatic process to generate the subsurfaces and volume defining an underground deposit, starting from the identification of relevant morphological features in seismic data. In particular, data simplification and refinement based on geostatistics have been applied to generate regular 2D meshes from strongly anisotropic data, in order to improve the quality of the final 3D tetrahedral mesh. Furthermore, we also use geostatistics to predict geotechnical parameters from local surveys and estimate their distribution on the whole domain: in this way the 3D model will include relevant geological features of the deposit and allow extrapolating different geotechnical information with associated uncertainty. The volume characterization and its 3D inspection will improve the structural and stratigraphic interpretation of deposits, to support geological analysis and planning of future engineering activities.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Modeling, Reconstruction, and Applications
description: 39
description: 49
description: Marianna Miola, Daniela Cabiddu, Simone Pittaluga, Michela Mortara, Marino Vetuschi Zuccolini, and Gianmario Imitazione
description: Keywords: Representation of subsoil, 3D modeling, Geostatistical analysis
title: Governance Aches and Pains: Is Bad Governance Chronic?
Creators: name: Larcker, David F.
name: Tayan, Brian
Publisher: name: Corporate Governance Research Initiative
Year: 2016

description: Institutional investors pay considerable attention to the quality of a company’s governance. Unfortunately, it is difficult for outside observers to reliably gauge governance quality. Oftentimes, poor governance manifests itself only after decisions have been made and their outcomes known. We examine four companies that have had experienced chronic governance-related problems in the past, including Massey Energy, Nabors Industries, Yahoo!, and Chesapeake Energy. We ask: How can shareholders diagnose the issues facing a company to determine whether they are the result of bad corporate governance? How can shareholders tell if the CEO or the board is the root cause of the problem? How can shareholders tell if the board is “captured” by the CEO? How can shareholders tell when a company begins to “drift"? How can they tell if the “right” CEO is in charge?
Collaborative Spectrum Sensing from Sparse Observations Using Matrix Completion for Cognitive Radio Networks
Creators: name: Jia
name: Meng
name: Yin, Wotao
name: Li, Husheng
name: Houssain, Ekram
name: Han, Zhu
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In cognitive radio, spectrum sensing is a key component to detect spectrum holes (i.e., channels not used by any primary users). Collaborative spectrum sensing among the cognitive radio nodes is expected to improve the ability of checking complete spectrum usage states. Unfortunately, due to power limitation and channel fading, available channel sensing information is far from being sufficient to tell the unoccupied channels directly. Aiming at breaking this bottleneck, we apply recent matrix completion techniques to greatly reduce the sensing information needed. We formulate the collaborative sensing problem as a matrix completion subproblem and a joint-sparsity reconstruction subproblem. Results of numerical simulations that validated the effectiveness and robustness of the proposed approach are presented. In particular, in noiseless cases, when number of primary user is small, exact detection was obtained with no more than 8% of the complete sensing information, whilst as number of primary user increases, to achieve a detection rate of 95.55%, the required information percentage was merely 16.8%.
3D City Reconstruction from OpenStreetMap Data
Creators: name: Kaszuba, Sara
name: Pellacini, Fabio
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Graphics systems and interfaces

description: Virtual city generation from real data is far from being straightforward for users, as it strictly depends on the application domain, amount of information available, and the adopted reconstruction techniques. Nowadays, reconstruction of virtual cities is of interests in entertainment, urban planning, emergency response and machine learning. To serve these applications, we have developed an open-source tool that can reconstruct cities at scale directly from OpenStreetMap data, that can perform full city generation in the order of hundreds of seconds.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Modeling, Reconstruction, and Applications
description: 51
description: 60
description: Sara Kaszuba and Fabio Pellacini
description: CCS Concepts: Computing methodologies --> Graphics systems and interfaces
IMGD: Image-based Multiscale Global Descriptors of Airborne LiDAR Point Clouds Used for Comparative Analysis
Creators: name: Sreevalsan-Nair, Jaya
name: Mohapatra, Pragyan
name: Singh, Satendra
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Airborne LiDAR point clouds
Local geometric descriptors
Global descriptor
Classification
Barycentric coordinates
Visualization
Shannon entropy
Distribution distance measure
Uncertainty analysis
Covariance tensor
Tensor voting CCS Concepts
Computing methodologies
Image representations
Human
centered computing
Visualization techniques
Information systems
Nearest
neighbor search

description: Both geometric and semantic information are required for a complete understanding of regions acquired as three-dimensional (3D) point clouds using the Light Detection and Ranging (LiDAR) technology. However, the global descriptors of such datasets that integrate both the information types are rare. With a focus on airborne LiDAR point clouds, we propose a novel global descriptor that transforms the point cloud from Cartesian to barycentric coordinate spaces. We use both the probabilistic geometric classification, aggregated from multiple scales, and the semantic classification to construct our descriptor using point rendering. Thus, we get an image-based multiscale global descriptor, IMGD. To demonstrate its usability, we propose the use of distribution distance measures between the descriptors for comparing the point clouds. Our experimental results demonstrate the effectiveness of our descriptor, when constructed of publicly available datasets, and on applying our selected distance measures.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Modeling, Reconstruction, and Applications
description: 61
description: 72
description: Jaya Sreevalsan-Nair, Pragyan Mohapatra, and Satendra Singh
description: Keywords: Airborne LiDAR point clouds, Local geometric descriptors, Global descriptor, Classification, Barycentric coordinates, Visualization, Shannon entropy, Distribution distance measure, Uncertainty analysis, Covariance tensor, Tensor voting CCS Concepts: Computing methodologies --> Image representations; Human-centered computing --> Visualization techniques; Information systems --> Nearest-neighbor search
A visit behind the wire at Caerwent Military Base
Creators: name: Reynolds, Ffion
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
SlowDeepFood: a Food Computing Framework for Regional Gastronomy
Creators: name: Gilal, Nauman Ullah
name: Al-Thelaya, Khaled
name: Schneider, Jens
name: She, James
name: Agus, Marco
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Human centered computing
Ubiquitous and mobile computing
Computing methodologies
Scene understanding
Object recognition

description: Food computing recently emerged as a stand-alone research field, in which artificial intelligence, deep learning, and data science methodologies are applied to the various stages of food production pipelines. Food computing may help end-users in maintaining healthy and nutritious diets by alerting of high caloric dishes and/or dishes containing allergens. A backbone for such applications, and a major challenge, is the automated recognition of food by means of computer vision. It is therefore no surprise that researchers have compiled various food data sets and paired them with well-performing deep learning architecture to perform said automatic classification. However, local cuisines are tied to specific geographic origins and are woefully underrepresented in most existing data sets. This leads to a clear gap when it comes to food computing on regional and traditional dishes. While one might argue that standardized data sets of world cuisine cover the majority of applications, such a stance would neglect systematic biases in data collection. It would also be at odds with recent initiatives such as SlowFood, seeking to support local food traditions and to preserve local contributions to the global variation of food items. To help preserve such local influences, we thus present a full end-to-end food computing network that is able to: (i) create custom image data sets semi-automatically that represent traditional dishes; (ii) train custom classification models based on the EfficientNet family using transfer learning; (iii) deploy the resulting models in mobile applications for real-time inference of food images acquired through smart phone cameras. We not only assess the performance of the proposed deep learning architecture on standard food data sets (e.g., our model achieves 91:91% accuracy on ETH’'s Food-101), but also demonstrate the performance of our models on our own, custom data sets comprising local cuisine, such as the Pizza-Styles data set and GCC-30. The former comprises 14 categories of pizza styles, whereas the latter contains 30 Middle Eastern dishes from the Gulf Cooperation Council members.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Modeling, Reconstruction, and Applications
description: 73
description: 83
description: Nauman Ullah Gilal, Khaled Al-Thelaya, Jens Schneider, James She, and Marco Agus
description: CCS Concepts: Human-centered computing --> Ubiquitous and mobile computing; Computing methodologies --> Scene understanding; Object recognition
Percutaneous penetration and anti-inflammatory activity of desfluorotriamcinolone acetonide
Creators: name: Verma, Subhash Chander
Publisher: name: University of British Columbia
Year: 2011

description: Desonide, a new topical anti-inflammatory and antipruritic steroid, has been investigated for its clinical, vasoconstrictor and in vitro percutaneous penetration properties, and compared to betamethasone 17-valerate, triamcinolone acetonide and hydrocortisone. The clinical and vasoconstrictor bioassay tests place desonide quantitatively among the most effective topical anti-inflammatory agents, possibly because of its relatively rapid skin penetration rate. The significance of the study is (a) it provides definitive data on topical anti-inflammatory effectiveness of desonide and (b) it reveals that, contrary to current opinion, fluorination of the steroid molecule may be unnecessary for topical anti-inflammatory activity, and that 9 °C-fluorination in prednisolone acetonides impedes rather than favours their skin penetration rates. New data on octanol/water partition coefficients and an unsuccessful effort of adopting the Martin (1968) oxime derivative spectrophotofluorometric technique for desonide assays are also included.
Hyperfine Level Splitting for Hydrogen-Like Ions due to Rotation-Spin Coupling
Creators: name: Pavlichenkov, Igor M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The theoretical aspects of spin-rotation coupling are presented. The approach is based on the general covariance principle. It is shown that the gyrogravitational ratio of the bare spin-1/2 and the spin-1 particles is equal unity. That is why spin couples with rotation as an ordinary angular momentum. This result is the rigorous substantiation of the cranking model. To observe the phenomenon, the experiment with hydrogen-like ions in a storage ring is suggested. It is found that the splitting of the $1 ^2!S_{1/2}, F=1/2$ hyperfine state of the $^{140}{\rm Pr}^{58+}$ and $^{142}{\rm Pm}^{60+}$ ions circulating in the storage ring ESR in Darmstadt along a helical trajectory is about 4.5 MHz. We argue that such splitting can be experimentally determined by means of the ionic interferometry.
description: 6 pages, final version
More from Mount Vernon
Creators: name: Mountvernon
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Guiding Lens-based Exploration using Annotation Graphs
Creators: name: Ahsan, Moonisa
name: Marton, Fabio
name: Pintus, Ruggero
name: Gobbetti, Enrico
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Information systems
Web applications
Human
centered computing
Graphical user interfaces
Computing methodologies
Graphics systems and interfaces
Applied computing
Arts and humanities

description: We introduce a novel approach for guiding users in the exploration of annotated 2D models using interactive visualization lenses. Information on the interesting areas of the model is encoded in an annotation graph generated at authoring time. Each graph node contains an annotation, in the form of a visual markup of the area of interest, as well as the optimal lens parameters that should be used to explore the annotated area and a scalar representing the annotation importance. Graph edges are used, instead, to represent preferred ordering relations in the presentation of annotations. A scalar associated to each edge determines the strength of this prescription. At run-time, the graph is exploited to assist users in their navigation by determining the next best annotation in the database and moving the lens towards it when the user releases interactive control. The selection is based on the current view and lens parameters, the graph content and structure, and the navigation history. This approach supports the seamless blending of an automatic tour of the data with interactive lens-based exploration. The approach is tested and discussed in the context of the exploration of multi-layer relightable models.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Short Papers 1: Rendering and Visualization
description: 85
description: 90
description: Moonisa Ahsan, Fabio Marton, Ruggero Pintus, and Enrico Gobbetti
description: CCS Concepts: Information systems --> Web applications; Human-centered computing --> Graphical user interfaces; Computing methodologies --> Graphics systems and interfaces; Applied computing --> Arts and humanities
Optical Observations of the Rapidly Expanding Type Ia Supernova 2007gi
Creators: name: Zhang, T.
name: Wang, X.
name: Li, W.
name: Filippenko, A. V.
name: Wang, L.
name: Zhou, X.
name: Brown, P. J.
name: Silverman, J. M.
name: Steele, T. N.
name: Ganeshalingam, M.
name: Li, J.
name: Deng, J.
name: Li, T.
name: Qiu, Y.
name: Zhai, M.
name: Shang, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present optical photometry and spectra for the Type Ia supernova (SN Ia) 2007gi in the nearby galaxy NGC 4036. SN 2007gi is characterized by extremely high-velocity (HV) features of the intermediate-mass elements (Si, Ca, and S), with expansion velocities ($v_{\rm exp}$) approaching $\sim$15,500 km s$^{-1}$ near maximum brightness (compared to $\sim$10,600 km s$^{-1}$ for SNe Ia with normal $v_{\rm exp}$). SN 2007gi reached a $B$-band peak magnitude of 13.25$\pm$0.04 mag with a decline rate of $Δm_{15}(B)$(true) = 1.33$\pm$0.09 mag. The $B$-band light curve of SN 2007gi demonstrated an interesting two-stage evolution during the nebular phase, with a decay rate of 1.16$\pm$0.05 mag (100 days)$^{-1}$ during $t = 60$--90 days and 1.61$\pm0.04$ mag (100 days)$^{-1}$ thereafter. Such a behavior was also observed in the HV SN Ia 2006X, and might be caused by the interaction between supernova ejecta and circumstellar material (CSM) around HV SNe Ia. Based on a sample of a dozen well-observed $R$-band (or unfiltered) light curves of SNe Ia, we confirm that the HV events may have a faster rise time to maximum than the ones with normal $v_{\rm exp}$.
description: 30 pages, 10 figures
Implementing Mach's Principle Using Gauge Theory
Creators: name: Gryb, Sean B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We reformulate an approach fist given by Barbour and Bertotti (BB) for implementing Mach's principle for nonrelativistic particles. This reformulation can deal with arbitrary symmetry groups and finite group elements. Applying these techniques to U(1) and SU(N) invariant scalar field theories, we show that BB's proposal is nearly equivalent to defining a covariant derivative using a dynamical connection. We then propose a modified version of the BB method which implements Mach's principle using gauge theory techniques and argue that this modified method is equivalent to the original. Given this connection between the particle models and Yang-Mills theories, we consider the effect of dynamic curvature as a possible generalization of the BB scheme. Since the BB method can be used as a novel way of deriving geometrodynamics, the connection with gauge theory may shed new light on the gauge properties of the gravitational field.
description: 31 pages, 3 figures. Clarifications added, figures and typos fixed, journal-ref updated
Mesh Colours for Gradient Meshes
Creators: name: Baksteen, Sarah D.
name: Hettinga, Gerben J.
name: Echevarria, Jose
name: Kosinka, Jiri
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Image processing

description: We present an extension of the popular gradient mesh vector graphics primitive with the addition of mesh colours, aiming to reduce the mesh complexity needed to describe intricate colour gradients and textures. We present interesting applications to user-guided authoring of detailed vector graphics and image vectorisation.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Short Papers 1: Rendering and Visualization
description: 91
description: 96
description: Sarah D. Baksteen, Gerben J. Hettinga, Jose Echevarria, and Jiri Kosinka
description: CCS Concepts: Computing methodologies --> Image processing
The Big Picture: Archaeological Records after the Project is Done
Creators: name: Smith, Jolene
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Repositórios de dados: caso de estudo do Portal de Dados de Biodiversidade de Portugal
Creators: name: Nó Português do GBIF
Publisher: name: Zenodo
Year: 2024
Subjects: Repositório de dados
Caso de estudo
GBIF.PT

description: O GBIF - Sistema Global de Informação sobre Biodiversidade - é uma rede internacional financiada por governos de todo o mundo, com o objetivo de dar acesso aberto a dados sobre toda a vida na Terra. Criado em 2001, o GBIF estabeleceu uma rede de países e organizações participantes que trabalham através de Nós Participantes e Afiliados. Fornece às instituições detentoras de dados em todo o mundo padrões comuns e ferramentas de código aberto que lhes permitem partilhar dados sobre a ocorrência de espécies.

O Nó Português do GBIF (GBIF.PT) tem por missão promover a integração dos provedores de dados portugueses e recursos de informação sobre biodiversidade na rede GBIF, e a disponibilidade dos dados de biodiversidade para a investigação científica e usos pela sociedade, através do Portal de Dados de Biodiversidade de Portugal.

Este caso de estudo faz parte de um conjunto de casos de uso de implementação de repositórios de dados institucionais e temáticos, focando essencialmente a sua caracterização geral, aspetos de políticas e processos, aspetos técnicos da plataforma, agregação em diretórios e certificação.

A recolha dos casos foi realizada pelo Grupo de Trabalho do Fórum de Gestão de Dados de Investigação 'Repositórios de Dados: Tecnologia, organização e certificação'.
Supersymmetric Lepton Flavour Violation in Low-Scale Seesaw Models
Creators: name: Ilakovac, Amon
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a new supersymmetric mechanism for lepton flavour violation in muon and tau decays and muon -> e conversion in nuclei, within a minimal extension of the MSSM with low-mass heavy singlet neutrinos and sneutrinos. We find that the decays mu -> e gamma, tau -> e gamma and tau -> mu gamma are forbidden in the supersymmetric limit of the theory, whereas other processes, such as mu -> eee, mu -> e conversion, tau -> eee and tau -> e mu mu, are allowed and can be dramatically enhanced several orders of magnitude above the observable level by potentially large neutrino Yukawa coupling effects. The profound implications of supersymmetric lepton flavour violation for present and future experiments are discussed.
description: 4 pages, 4 eps figures, version as to appear in the section of Rapid Communication of Physical Review D
Accessing Egyptian archaeology through a British Museum exhibition
Creators: name: Maitland, Margaret
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
HHSMT Observations of the Venusian Mesospheric Temperature, Winds, and CO abundance around the MESSENGER Flyby
Creators: name: Rengel, M.
name: Hartogh, P.
name: Jarchow, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present submillimeter observations of 12CO J=3-2 and J=2-1, and 13CO J = 2-1 lines of the Venusian mesosphere and lower thermosphere with the Heinrich Hertz Submillimeter Telescope (HHSMT) taken around the second MESSENGER flyby of Venus on 5 June 2007. The observations cover a range of Venus solar elongations with different fractional disk illuminations. Preliminary results like temperature and CO abundance profiles are presented.These data are part of a coordinated observational campaign in support of the ESA Venus Express mission. Furthermore, this study attempts to contribute to cross-calibrate space- and ground-based observations, to constrain radiative transfer and retrieval algorithms for planetary atmospheres, and to a more thorough understanding of the global patters of circulation of the Venusian atmosphere.
description: 12 pages, 8 figures. Latex, uses elsart.cls (included). Higher resolution figures in original article. Planetary and Space Science, in press
Remote Volume Rendering with a Decoupled, Ray-Traced Display Phase
Creators: name: Zellmann, Stefan
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Human centered computing
Visualization techniques
Scientific visualization
Computing methodologies
Ray tracing
Graphics processors

description: We propose an image warping-based remote rendering technique for volumes that decouples the rendering and display phases. For that we build on prior work where we sample the volume on the client using ray casting and reconstruct z-values based on heuristics. Color and depth buffers are then sent to the client, which reuses this depth image as a stand-in for subsequent frames by warping it to reflect the current camera position and orientation until new data was received from the server. The extension we propose in this work represents the depth pixels as spheres and ray traces them on the client side. In contrast to the reference method, this representation adapts the footprint of the depth pixels to the distance to the camera origin, which is more effective at hiding warping artifacts, particularly when applied to volumetric data sets.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Short Papers 1: Rendering and Visualization
description: 97
description: 101
description: Stefan Zellmann
description: CCS Concepts: Human-centered computing --> Visualization techniques; Scientific visualization; Computing methodologies --> Ray tracing; Graphics processors
Dead deer and ancient cattle: A day in the lab
Creators: name: Jgillespie
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Dyson's constant for the hypergeometric kernel
Creators: name: Lisovyy, O.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study a Fredholm determinant of the hypergeometric kernel arising in the representation theory of the infinite-dimensional unitary group. It is shown that this determinant coincides with the Palmer-Beatty-Tracy tau function of a Dirac operator on the hyperbolic disk. Solution of the connection problem for Painleve VI equation allows to determine its asymptotic behavior up to a constant factor, for which a conjectural expression is given in terms of Barnes functions. We also present analogous asymptotic results for the Whittaker and Macdonald kernel.
description: 17 pages, 2 figures; v2: added references and derivation of Painleve VI from Tracy-Widom equations
Tree-Level Amplitudes in N=8 Supergravity
Creators: name: Drummond, J. M.
name: Spradlin, M.
name: Volovich, A.
name: Wen, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an algorithm for writing down explicit formulas for all tree amplitudes in N=8 supergravity, obtained from solving the supersymmetric on-shell recursion relations. The formula is patterned after one recently obtained for all tree amplitudes in N=4 super Yang-Mills which involves nested sums of dual superconformal invariants. We find that all graviton amplitudes can be written in terms of exactly the same structure of nested sums with two modifications: the dual superconformal invariants are promoted from N=4 to N=8 superspace in the simplest manner possible--by squaring them--and certain additional non-dual conformal gravity dressing factors (independent of the superspace coordinates) are inserted into the nested sums. To illustrate the procedure we give explicit closed-form formulas for all NMHV, NNMHV and NNNMV gravity superamplitudes.
description: 27 pages, 5 figures, v2: typos corrected
A High Quality 3D Controller for Mobile and Desktop Web Applications
Creators: name: Fornari, Daniele
name: Malomo, Luigi
name: Cignoni, Paolo
Publisher: name: The Eurographics Association
Year: 2021

description: The interaction between a 2D input device (like a mouse or a touchscreen) and a 3D object on the screen with the purpose of examining it in detail is a well-studied interaction problem. The inherent difference in degrees of freedom between input devices and possible 3D transformations makes it difficult to intuitively map inputs to operations to be performed on 3D objects. Although, over the years, studies led to a wide variety of solutions to overcome this problem, most of them are not actually available in real-world applications. In particular, for 3D web applications, only basic solutions are often implemented, and even the most used web framework for 3D still lacks state of the art implementations. We will face the problem of 3D interaction through touch and mouse input, and we propose our implementation of a 3D view manipulator for web applications, which offers a natural control, advanced functionalities, and provides an easy-to-use interface for both desktop and mobile environments.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Short Papers 1: Rendering and Visualization
description: 103
description: 107
description: Daniele Fornari, Luigi Malomo, and Paolo Cignoni
title: The size of fiscal multipliers and the stance of monetary policy in developing economies
Creators: name: Ojeda-Joya, Jair N.
name: Guzman, Oscar E.
Publisher: name: Graduate Institute of International and Development Studies
publisherIdentifier: https://ror.org/007ygn379
publisherIdentifierScheme: ROR
Year: 2017

description: Graduate Institute of International and Development Studies Working Paper ; no. 08/2017
networks, administration, garden centres, maternity...
Creators: name: Collar, Anna
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
STRONGER: Simple TRajectory-based ONline GEsture Recognizer
Creators: name: Emporio, Marco
name: Caputo, Ariel
name: Giachetti, Andrea
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Neural networks
Human
centered computing
Gestural input

description: In this paper, we present STRONGER, a client-server solution for the online gesture recognition from captured hands' joints sequences. The system leverages a CNN-based recognizer improving current state-of-the-art solutions for segmented gestures classification, trained and tested for the online gesture recognition task on a recent benchmark including heterogeneous gestures. The recognizer provides good classification accuracy and a limited number of false positives on most of the gesture classes of the benchmark used and has been used to create a demo application in a Mixed Reality scenario using an Hololens 2 optical see through Head-Mounted Display with hand tracking capability.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Augmented and Virtual Reality
description: 109
description: 117
description: Marco Emporio, Ariel Caputo, and Andrea Giachetti
description: CCS Concepts: Computing methodologies --> Neural networks; Human-centered computing --> Gestural input
The owl of Minerva : governing technology in the quest for sustainability
Creators: name: Bolwell, D
Publisher: name: University Of Tasmania
Year: 2023

description: Companion to the goddess of wisdom, the owl flies at dusk; understanding emerges only at the end of an era. Inspired by insights from both sides of the science and humanities divide, this dissertation surveys the terrain of sustainability before swooping upon our relationship with technology as key to its realisation. It assesses each element of the classic I=PAT equation and determines that humanity's current trajectory is not sustainable. Because effective population (P) policy acts slowly, and because reducing affluence (A) is incompatible with human aspiration, only technology (T) might moderate human impact (I) to sustainable proportions. Building on a comparative analysis of three case studies on chemical herbicides, nuclear power, and robotics and artificial intelligence that identify significant problems with present governance approaches, this study outlines an alternative. Rejecting the attitude that technological 'innovation' and 'disruption' are unquestionably good and inevitable, it argues that if sustainability is to be realised, humanity must wrest back control over the technologies we create. Supported by integrity and other measures, this implies going beyond existing approaches to a form of network governance that promises the agility to deal with complex change, while avoiding regulatory capture by commercial and military interests. At the end of this industrial era, there is need for wisdom. Providing that sustainability has priority, that its governance is inclusive, transparent and polycentric, through technology humanity may yet have a long-term future on Earth.
Pen2VR: A Smart Pen Tool Interface for Wire Art Design in VR
Creators: name: Li, Wanwan
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Applied computing → Fine arts
Human
centered computing → User interface programming
User interface toolkits
User interface design
Wireframes

description: In this paper, we present Pen2VR: a smart pen tool interface for 3D drawing wire art design in VR. In Pen2VR, with VR headsets put on, users are allowed to create their VR drawings as 3D lines or curves in a virtual space as if they are using a 3D version of the pen tool in Photoshop. During the 3D drawing in VR, users can directly create geometric elements including polylines and Bezier curves by clicking and dragging a VR controller in mid-air. Besides, in order to make Pen2VR smart, we proposed an optimization-based approach to automatically fine-tune the user's 3D initial input into well-beautified 3D drawings. Experimental results show that the qualities of optimized wire art designs have been significantly improved.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Augmented and Virtual Reality
description: 119
description: 127
description: Wanwan Li
description: CCS Concepts: Applied computing → Fine arts; Human-centered computing → User interface programming; User interface toolkits; User interface design; Wireframes
Exploring Upper Limb Segmentation with Deep Learning for Augmented Virtuality
Creators: name: Gruosso, Monica
name: Capece, Nicola
name: Erra, Ugo
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Virtual reality
Mixed / augmented reality
Image segmentation
Neural networks
Perception
Image processing

description: Sense of presence, immersion, and body ownership are among the main challenges concerning Virtual Reality (VR) and freehand-based interaction methods. Through specific hand tracking devices, freehand-based methods can allow users to use their hands for VE interaction. To visualize and make easy the freehand methods, recent approaches take advantage of 3D meshes to represent the user's hands in VE. However, this can reduce user immersion due to their unnatural correspondence with the real hands. We propose an augmented virtuality (AV) pipeline allows users to visualize their limbs in VE to overcome this limit. In particular, they were captured by a single monocular RGB camera placed in an egocentric perspective, segmented using a deep convolutional neural network (CNN), and streamed in the VE. In addition, hands were tracked through a Leap Motion controller to allow user interaction. We introduced two case studies as a preliminary investigation for this approach. Finally, both quantitative and qualitative evaluations of the CNN results were provided and highlighted the effectiveness of the proposed CNN achieving remarkable results in several real-life unconstrained scenarios.
description: Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference
description: Augmented and Virtual Reality
description: 129
description: 137
description: Monica Gruosso, Nicola Capece, and Ugo Erra
description: CCS Concepts: Computing methodologies --> Virtual reality; Mixed / augmented reality; Image segmentation; Neural networks; Perception; Image processing
A day of archaeology in the peatlands of Ireland II
Creators: name: Mount, Charles
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
X-ray narrow line region variability as a geometry probe: The case of NGC 5548
Creators: name: Detmers, R. G.
name: Kaastra, J. S.
name: McHardy, I. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the long time scale variability of the gas responsible for the X-ray narrow emission lines in the Seyfert 1 galaxy NGC 5548, in order to constrain the location and geometry of the emitting gas. Using X-ray spectra taken with the Chandra-LETGS and HETGS instruments and with XMM-Newton RGS and combining them with long-term monitoring observations of the Rossi X-ray Timing Explorer (RXTE), we perform a correlation analysis in order to try constrain the time scale on which the narrow line emitting gas responds to variations of the continuum flux. With the inclusion of the 2007 Chandra-LETGS observation we have an additional observation at an historically low flux level. We conclude that the NLR in NGC 5548 is in the form of an ionization cone, compact in size, and located between 1 and 15 pc from the central source, depending on the exact geometry of the NLR.
description: 6 pages, 4 figures, accepted for publication in A&A
Progression to myocardial infarction short-term death based on interval sequential pattern mining
Creators: name: Wu, YS
name: Taniar, D
name: Adhinugraha, Kiki
name: Wang, CH
name: Pai, TW
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 3201
subject: Cardiovascular medicine and haematology

description: Background: Myocardial infarction (MI) is one of the significant cardiovascular diseases (CVDs). According to Taiwanese health record analysis, the hazard rate reaches a peak in the initial year after diagnosis of MI, drops to a relatively low value, and maintains stable for the following years. Therefore, identifying suspicious comorbidity patterns of short-term death before the diagnosis may help achieve prolonged survival for MI patients. Methods: Interval sequential pattern mining was applied with odds ratio to the hospitalization records from the Taiwan National Health Insurance Research Database to evaluate the disease progression and identify potential subjects at the earliest possible stage. Results: Our analysis resulted in five disease pathways, including “diabetes mellitus,” “other disorders of the urethra and urinary tract,” “essential hypertension,” “hypertensive heart disease,” and “other forms of chronic ischemic heart disease” that led to short-term death after MI diagnosis, and these pathways covered half of the cohort. Conclusion: We explored the possibility of establishing trajectory patterns to identify the high-risk population of early mortality after MI.