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Rapid sketch modelling and Computer-Aided Design (CAD) initiation are increasingly demanded activities in the creative and educational areas. For this reason, this paper presents a cross-platform C++ toolkit with the aim to facilitate the illustration of technical concepts in a fast way using basic quadric objects, Bézier and NURBS surfaces with a wireframe representation. This tool was designed using Software Engineering principles guided by a basic Rational Unified Process (RUP) methodology with the application of the Unified Modelling Language (UML). This tool perfectly works in all computers with very elemental 3D graphics hardware and with OpenGL support. The resulting benchmarks demonstrate that ISSIGraph has a very small CPU footprint that make it suitable for any platform. As a consequence, this application is well suited for rapid 2D/3D project sketching in the creative and engineering fields, as well as an initiation to CAD techniques for students and computer fans., Spanish Computer Graphics Conference (CEIG), Short Papers, 19, 22, Carlos Jiménez de Parga, CCS Concepts: Human-centered computing --> Accessibility theory, concepts and paradigms; Applied computing --> Arts and humanities; Computer-assisted instruction; Education; Software and its engineering --> Designing software; Computing methodologies --> Computer graphics

Como forma de brindar un aporte al campo de la Comunicación Digital proveniente del área de estudio del Diseño Gráfico o Diseño en Comunicación Visual, y en concreto a UX (Experiencia de Usuario) y UI (Interfaz de Usuario), es que fue propuesto el diseño de un prototipo de aplicación móvil para el Repositorio del Servicio de Difusión de la Creación Intelectual (SEDICI) de la Universidad Nacional de La Plata (UNLP), a partir del análisis de su interfaz de usuario. La misma se basa en los conceptos que rigen y caracterizan la arquitectura de su actual sitio web, para poder diseñar una aplicación móvil cuya interfaz de usuario se adecúe a los parámetros de usabilidad y accesibilidad que se corresponden al tipo de soporte. Tras un análisis funcional de la plataforma SEDICI, fue relevada la problemática de falta de adaptabilidad (responsive design) del actual sitio web del Repositorio Digital de la UNLP. Por consiguiente, se plantea el supuesto que mediante la generación del diseño de un proyecto que comprende el planteo de un prototipo de aplicación, (para futura implementación y desarrollo), es que se podrá dar una solución al problema de diseño del actual sitio web que no posee tal atributo, y también, como una ampliación de sus canales digitales de comunicación. El propósito del TIF, es el de diseñar un prototipo móvil para SEDICI, en base al resultado del análisis teórico-interpretativo del concepto comunicacional de interfaz, a fines de relacionarlo con la expertise de metodologías actuales que se utilizan como guías de estudio en diversas áreas de implementación y creación de dichas interfaces digitales, provenientes de diversas disciplinas como la Comunicación Social, las Ciencias Humanas, la Comunicación Visual, el Diseño Industrial y la Ingeniería de Software., Facultad de Periodismo y Comunicación Social

[Abstract] The usability of Domain-Specific Languages (DSLs) has been attracting considerable interest from researchers lately. In particular, our literature review found many usability studies that make use of subjective and empirical methods. However, we noted a lack of heuristic methods in the literature. In comparison, there exist several usability studies of Application Programming Interfaces (APIs) that have used heuristics with success, so we argue that this approach would be also useful for DSLs. Therefore, this paper proposes a set of usability heuristics for DSLs and illustrates the approach with a case study. We show how our heuristics helped us identify many actual usability problems, even for a simple DSL. Xunta de Galicia; GRC2014/035 Xunta de Galicia; ED431G/01

Adaptive Mesh Refinement (AMR) methods are common in scientific workloads, and very useful during analyses and visualization. In this work, we aim to reduce memory and storage footprint of AMR data. We adapt tree compression (SVDAG) and GPU Ray Cast rendering, created for Computer Graphics surface scenes, for volume data from Scientific Visualization workloads. In particular, experiments have been conducted with the native Tree-Based AMR (TB-AMR) data structure in the Visualization ToolKit (VTK): vtkHyperTreeGrid (HTG). A HTG to SVDAG online converter has been implemented as well as a multi-SVDAG extension. Results showed several orders of magnitude memory footprint reduction thanks to the compression and efficient Ray Cast rendering. Furthermore, serialization to SVDAG enabled almost instant loading and display of simulation data instead of minutes. Overall our experiments show great benefits, and this shows great promises to further improve TB-AMR analyses., EuroVis 2020 - Posters, Posters, 5, 7, Antoine Roche and Jérôme Dubois, CCS Concepts: General and reference -->Design; Performance; Evaluation; Human-centered computing -->Visualization; Software and its engineering -->Designing software; Information systems -->Data compression

With the constant increase in compute power of supercomputers, high performance computing simulations are producing higher fidelity results and possibly massive amounts of data. To keep visualization of such results interactive, existing techniques such as Adaptive Mesh Refinement (AMR) can be of use. In particular, Tree-Based AMR methods (TB-AMR) are widespread in simulations and are becoming more present in general purpose visualization pipelines such as VTK. In this work, we show how TB-AMR data structures could lead to more efficient exploration of massive data sets in the Exascale era. We discuss how algorithms (filters) should be designed to take advantage of tree-like data structures for both data filtering or rendering. By introducing controlled hierarchical data reduction we greatly reduce the processing time for existing algorithms, sometimes with no visual impact, and drastically decrease exploration time for analysts. Also thanks to the techniques and implementations we propose, visualization of very large data is made possible on very constrained resources. These ideas are illustrated on million to billion-scale native TB-AMR or resampled meshes, with the HyperTreeGrid object and associated filters we have recently optimized and made available in the Visualisation Toolkit (VTK) for use by the scientific community., EuroVis 2019 - Short Papers, Volume, Simulation, and Data Reduction, 37, 41, Jérôme Dubois and Jacques-Bernard Lekien, CCS Concepts: General and reference --> Design; Performance; Evaluation; Human-centered computing --> Visualization; Software and its engineering --> Designing software; Information systems --> Data compression

This course takes a practical approach to introduce the principles, methods and tools in task modeling and how this technique can support identification of automation opportunities, dangers and limitations. A technical interactive hands-on exercise of how to "do it right", such as: How to go from task analysis to task models? How to identify tasks that are good candidate for automation (through analysis and simulation)? How to identify reliability and usability dangers added by automation? How to design usable automation at system, application and interaction levels? And more...

National audience; This course takes a practical approach to introduce the principles, methods and tools in task modeling and how this technique can support identification of automation opportunities, dangers and limitations. A technical interactive hands-on exercise of how to "do it right", such as: How to go from task analysis to task models? How to identify tasks that are good candidate for automation (through analysis and simulation)? How to identify reliability and usability dangers added by automation? How to design usable automation at system, application and interaction levels? And more...