Search results for "Computer Graphics"
showing 10 items of 530 documents
Depth rendering of large incoherent scenes from integral images
2016
Integral imaging is a technique that provides the spatial and angular information of three-dimensional (3D) scenes through a single shot. Taking advantage of this capability, different applications have been developed. Some of these applications are the 3D display and digital post-processing, in particular depth-reconstruction from integral images.
Acoustic rendering of particle-based simulation of liquids in motion
2009
In interaction and interface design, the representation of continuous processes often uses liquid metaphors, such as dripping or streaming. When an auditory display of such processes is required, an approach to sound-synthesis based on the physics of liquids in motion would be the most convincing, especially when real-time interaction is into play. In order to bridge the complexity of fluid-dynamic simulations with the needs of interactive sonification, we propose a multi-rate sound synthesis of liquid phenomena. Low-rate smoothed-particle hydrodynamics is used to model liquids in motion and to trigger sound-emitting events. Such events, such as solid-liquid collision, or bubble formation, …
What characterizes Norwegian nursing students’ reflective journals during clinical placement in an African country?
2015
Abstract Introduction An increasing number of Norwegian nursing students take part in exchange programmes in African countries. Reflective journals are often used to enhance clinical placements learning outcomes. Aim To identify the features that characterized students' experiences reported in their reflective journals during clinical placements in an African country in light of cultural competence. Methods Qualitative text analysis of 350 reflective journals written by 197 students taking part in an exchange programme in one of three African countries. Results The reflective journals were characterized by the students' personal emotions, judgements of others and comparisons between what th…
VisAdapt: A Visualization Tool to Support Climate Change Adaptation.
2017
In this article we present the design and implementation of the web-based visualization tool VisAdapt, developed to support homeowners in the Nordic countries to assess anticipated climate change and climate related risks which are expected to negatively impact their living conditions. The tool guides the user through a three-step visual exploration process to facilitate the exploration of risks and adaptation measures, specifically adapted to the user. VisAdapt has been developed over the course of two years in close collaboration with domain experts and end users to ensure the validity of the included data and the efficiency of the visual interface. Although VisAdapt is designed for Nordi…
Capabilities and Affordances of Virtual Worlds for People with Lifelong Disability
2013
Using technology is of great value for people with lifelong disability (PWLD). The Internet can help PWLD to be more independent, to be socially active, and to participate in a range of activities. Virtual worlds (VWs) offer an environment with technology capabilities for interaction, rendering, and communication. The ability to take advantage of these capabilities may depend on the technology and the ability of the person utilizing it. Using a qualitative study we aimed to explore the differences of ability required to use these capabilities and make capabilities into affordances for PWLD. We found there were differences in PWLD’s ability to utilize the capabilities offered and conclude th…
Infoética y derechos humanos.
2009
En los últimos años, se ha popularizado el término “Infoética”, empleado para analizar los problemas éticos que está generando la sociedad de la información, de ahí que en este texto se realice una aproximación a este concepto, describiendo algunos de sus usos más habituales. Este análisis se completa con un repaso de las razones que han llevado a algunos autores a revisar el planteamiento de los derechos humanos como consecuencia de las transformaciones que provoca la sociedad del conocimiento. Finalmente, se abordan las posibilidades que presenta la Infoética para construir una nueva dimensión de la ciudadanía: la ciudadanía digital, que surge por la aparición del ciberespacio, la socieda…
Layout algorithms of graph-like diagrams for GRADE windows graphic editors
1996
We propose a set of layout operations ensuring flexible and convenient interactive editing of communication diagrams and nested entity-relationship models having textual labels on connections. The set includes several procedures for incremental diagram layout. Tools for fully automatic layout and for direct manual painting of graphic primitives are also integrated in a single system. In this way we have filled to some extent the gap between both extremal levels of editing.
Graphic representation of data resulting from measurement comparison trials in cataract and refractive surgery.
2003
* BACKGROUND AND OBJECTIVES: The evaluation of new diagnostic measurement devices allows intraindividual comparison with an established standard method. However, reports in journal articles often omit the adequate incorporation of the intraindividual design into the graphic representation. * PATIENTS AND METHODS: This article illustrates the drawbacks and the possible erroneous conclusions caused by this misleading practice in terms of recent method comparison data resulting from axial length measurement in 220 consecutive patients by both applanation ultrasound and partial coherence interferometry. * RESULTS: Graphic representation of such method comparison data should be based on boxplots…
The Scree Test and the Number of Factors: a Dynamic Graphics Approach
2015
Exploratory Factor Analysis and Principal Component Analysis are two data analysis methods that are commonly used in psychological research. When applying these techniques, it is important to determine how many factors to retain. This decision is sometimes based on a visual inspection of the Scree plot. However, the Scree plot may at times be ambiguous and open to interpretation. This paper aims to explore a number of graphical and computational improvements to the Scree plot in order to make it more valid and informative. These enhancements are based on dynamic and interactive data visualization tools, and range from adding Parallel Analysis results to "linking" the Scree plot with other g…
The PLVC display color characterization model revisited
2008
This work proposes a study of the Piecewise Linear assuming Variation in Chromaticity (PLVC) dis- play color characterization model. This model has not been widely used as the improved accuracy compared with the more common PLCC (Piecewise Linear assuming Chromaticity Constancy) model is not significant for CRT (Cathode Ray Tube) display technology, and it requires more computing power than this model. With today's computers, computational complexity is less of a problem, and today's display technologies show a different colori- metric behavior than CRTs. The main contribution of this work is to generalize the PLVC model to multiprimary displays and to provide extensive experimental results…