Search results for "VR"
showing 10 items of 758 documents
“You look at it, but will you choose it”: Is there a link between the foods consumers look at and what they ultimately choose in a virtual supermarke…
2022
Most of the studies that showed a link between gaze allocation and consumer's food choices were performed on food products belonging to a same category. However, consumers usually make food choices in more complex environments, between many different products, and different factors can influence their choices. Therefore, our study aimed to understand the link between gaze behavior and food choices in a complex and realistic situation of choice. Participants (n=99) performed a food choice task in a virtual supermarket. They had to choose three food products to create a dish in four scenarios evoking different motivations (focus on health, environment, food pleasure, and daily scenario as con…
Forecasting : theory and practice
2022
Forecasting has always been at the forefront of decision making and planning. The uncertainty that surrounds the future is both exciting and challenging, with individuals and organisations seeking to minimise risks and maximise utilities. The large number of forecasting applications calls for a diverse set of forecasting methods to tackle real-life challenges. This article provides a non-systematic review of the theory and the practice of forecasting. We provide an overview of a wide range of theoretical, state-of-the-art models, methods, principles, and approaches to prepare, produce, organise, and evaluate forecasts. We then demonstrate how such theoretical concepts are applied in a varie…
Validation of the Virtual Reality Neuroscience Questionnaire: Maximum Duration of Immersive Virtual Reality Sessions Without the Presence of Pertinen…
2019
Research suggests that the duration of a VR session modulates the presence and intensity of VRISE, but there are no suggestions regarding the appropriate maximum duration of VR sessions. The implementation of high-end VR HMDs in conjunction with ergonomic VR software seems to mitigate the presence of VRISE substantially. However, a brief tool does not currently exist to appraise and report both the quality of software features and VRISE intensity quantitatively. The VRNQ was developed to assess the quality of VR software in terms of user experience, game mechanics, in-game assistance, and VRISE. Forty participants aged between 28 and 43 years were recruited (18 gamers and 22 non-gamers) for…
Technological Competence Is a Pre-condition for Effective Implementation of Virtual Reality Head Mounted Displays in Human Neuroscience: A Technologi…
2019
Immersive virtual reality (VR) emerges as a promising research and clinical tool. However, several studies suggest that VR induced adverse symptoms and effects (VRISE) may undermine the health and safety standards, and the reliability of the scientific results. In the current literature review, the technical reasons for the adverse symptomatology are investigated to provide suggestions and technological knowledge for the implementation of VR head-mounted display (HMD) systems in cognitive neuroscience. The technological systematic literature indicated features pertinent to display, sound, motion tracking, navigation, ergonomic interactions, user experience, and computer hardware that should…
Knowledge Base Approach for 3D Objects Detection in Point Clouds Using 3D Processing and Specialists Knowledge
2012
This paper presents a knowledge-based detection of objects approach using the OWL ontology language, the Semantic Web Rule Language, and 3D processing built-ins aiming at combining geometrical analysis of 3D point clouds and specialist's knowledge. Here, we share our experience regarding the creation of 3D semantic facility model out of unorganized 3D point clouds. Thus, a knowledge-based detection approach of objects using the OWL ontology language is presented. This knowledge is used to define SWRL detection rules. In addition, the combination of 3D processing built-ins and topological Built-Ins in SWRL rules allows a more flexible and intelligent detection, and the annotation of objects …
"El origen oculto y ocultado del Romanticismo: el caso de Charles Nodier"
2012
Se trata de dar algunas referencias sobre el nacimiento del Romanticismo francés descubriendo sus orígenes "ocultas" (la vena del Romanticismo "negro" que se llama también "frenético") y "ocultadas" en el sentido que la historia literaria oficial de los libros escolares deja Charles Nodier de lado. Aunque Nodier fue precisamente el padre spiritual de los románticos franceses, el precursor incomprendido de la corriente frenética en Francia, el descubridor de V. Hugo, el padrino de la generación de 1830 que se encontraba en su salón de la biblioteca del Arsenal, pero también un hombre demasiado sabio, demasiado ecléctico, demasiado disperso, demasiado viejo en fin para tener en mano la bandej…
Contribution to the development of 100% bio-based composites : synthesis of bio-based polyepoxides, supercritical CO2 treatment of hemp fibers and im…
2018
This thesis contributes to the development of 100% bio-based hemp/epoxy composites. Current environmental issues favor the emergence of materials derived from renewable resources such as plant fibres and a wide range of bio-based building-blocks, source of epoxy prepolymers in particular. An intensive investigation of the two constituents (hemp fibres and polyepoxidic matrix) is carried out before the composites manufacturing. Supercritical CO2 treatment is applied to hemp fibres used as reinforcement in composite materials. This treatment, not optimized, leads to better individualization as well as a decrease in the hygroscopic power of the fibres. These aspects, which are essential in ord…
Lignes et points : Illustration, impressionnisme littéraire et procédés
2020
International audience; Cette conférence a porté de manière générale sur les rapports entre illustration et procédés de reproduction. Elle est plus précisément consacrée à l’utilisation de la photogravure dans le livre illustré britannique de la fin du 19ème siècle. L’exemple choisi est le recueil d’essais London Impressions (Constable, 1898) d’Alice Meynell, illustré par l’artiste britannique William Hyde. Peintre et aquafortiste, Hyde collaborait avec l’inventeur écossais Donald Cameron-Swan (1863-1951) de la Swan Electric Engraving Company, spécialisée dans le cliché trait comme dans le cliché simili. À la croisée de pratiques autographiques et d’opérations mécaniques, la photogravure al…
Contribution to the development of natural fibers' use in structural composites. Study of a Flax / Epoxy composite’s behavior when exposed to hygroth…
2018
In recent years there is renewed interest for bio-sourced composites, including those based on flax fibers, and especially in the field of transport, mobility and leisure. In fact, the lower energy cost and environmental impact of flax fiber give it an advantage over glass fiber, while competing with its specific mechanical properties. However, flax fibers based composites long-term behavior remains poorly known in damp environments and constitutes an obstacle to a wider use. This work aims to provide adapted parameters to produce a high-grade flax/epoxy composite and to contribute to improve the durability knowledge of these materials. First, the influence of many processing parameters [(i…
El monogramista F.D.V. ¿Frans de Vriendt? A propósito de una Susana y los viejos firmada y fechada en 1543
2017
En este artículo analizamos una pintura flamenca inédita, que representa la escena de Susana y los viejos. Se conserva en una colección particular de Cartagena (Murcia). Está fechada en 1543 y firmada por F.D.V., monograma que plantea la principal incógnita de nuestra investigación. Tales siglas hacen pensar de inmediato en el pintor Frans Floris de Vriendt. En este sentido, los rasgos estilísticos de la obra están próximos al espíritu de este maestro. Sin embargo, diversas cuestiones nos impiden confirmar por el momento tal autoría. En el texto desarrollamos estas hipótesis y definimos la personalidad artística del que denominamos Monogramista F.D.V. In this paper, we analyze an unpublishe…