Search results for "simulator"
showing 10 items of 188 documents
Validating an Efficient Method to Quantify Motion Sickness
2011
Objective: Motion sickness (MS) can be a debilitating side effect associated with motion in real or virtual environments. We analyzed the effect of expectancy on MS and propose and validate a fast and simple MS measure.Background: Several questionnaires measure MS before or after stimulus presentation, but no satisfactory tool has been established to quickly capture MS data during exposure. To fill this gap, we introduce the Fast MS Scale (FMS), a verbal rating scale ranging from zero (no sickness at all) to 20 (frank sickness). Also, little is known about the role of expectancy effects in MS studies. We conducted an experiment that addressed this issue.Method: For this study, 126 volunteer…
Stereoscopic Viewing Enhances Visually Induced Motion Sickness but Sound Does Not
2012
Optic flow in visual displays or virtual environments often induces motion sickness (MS). We conducted two studies to analyze the effects of stereopsis, background sound, and realism (video vs. simulation) on the severity of MS and related feelings of immersion and vection. In Experiment 1, 79 participants watched either a 15-min-long video clip taken during a real roller coaster ride, or a precise simulation of the same ride. Additionally, half of the participants watched the movie in 2D, and the other half in 3D. MS was measured using the Simulator Sickness Questionnaire (SSQ) and the Fast Motion Sickness Scale (FMS). Results showed a significant interaction for both variables, indicatin…
An Exact Solution for the Level-Crossing Rate and the Average Duration of Fades of the Envelope of Sum-of-Cisoids Processes
2012
Authors version of an article published in the journal: Procedia Technology. Also available from the publisher at: http://dx.doi.org/10.1016/j.protcy.2012.03.004 Sum-of-cisoids (SOC) processes provide a physically and numerically appealing framework for the modelling and simulation of a wide class of mobile radio channels. This paper is concerned with the problem of finding a general solution for the level-crossing rate (LCR) and the average duration of fades (ADF) of the envelope of SOC processes. Exact expressions are derived for the LCR and the ADF by taking into account that the inphase component, the quadrature component, and the time derivatives of the inphase and quadrature component…
Chewing behavior of high-protein expanded pea flour
2018
Chewing behavior of high-protein expanded pea flour. 5. international conference on Food oral processing
Experimental generalized quantum suppression law in Sylvester interferometers
2017
Photonic interference is a key quantum resource for optical quantum computation, and in particular for so-called boson sampling machines. In interferometers with certain symmetries, genuine multiphoton quantum interference effectively suppresses certain sets of events, as in the original Hong-Ou-Mandel effect. Recently, it was shown that some classical and semi-classical models could be ruled out by identifying such suppressions in Fourier interferometers. Here we propose a suppression law suitable for random-input experiments in multimode Sylvester interferometers, and verify it experimentally using 4- and 8-mode integrated interferometers. The observed suppression is stronger than what is…
A Multi-Projector Calibration Method for Virtual Reality Simulators with Analytically Defined Screens
2017
The geometric calibration of projectors is a demanding task, particularly for the industry of virtual reality simulators. Different methods have been developed during the last decades to retrieve the intrinsic and extrinsic parameters of projectors, most of them being based on planar homographies and some requiring an extended calibration process. The aim of our research work is to design a fast and user-friendly method to provide multi-projector calibration on analytically defined screens, where a sample is shown for a virtual reality Formula 1 simulator that has a cylindrical screen. The proposed method results from the combination of surveying, photogrammetry and image processing approac…
Management Simulator as an Instrument to Aid Turning “Stunted Growth” Round in Family Businesses
2008
This paper is the fourth in a series which has described the role and construction of simulation models and a ‘Management Flight Simulator’ that could aid the entrepreneur-owners of so-called ‘dwarf’ or ‘stunted growth’ small firms to break out from the constraints holding them back. While the research presented to date has highlighted the issues in such companies, and has suggested that in many situations relatively simple changes only might be needed to unleash the growth potential of such firms, effecting such changes is not likely to be that “simple” in real life. It has to be possible for affected owner-entrepreneurs to understand a number of factors: that there is a problem (or opport…
Nouvelles technologies et aide à la compréhension de documents techniques : Construction et expérimentation d'un simulateur de fonctionnement de grue…
2001
Reading skills are more and more required to succeed professional examination. French crane drivers are concerned with this problem. In order to help them, we have conducted a study with three main steps. First, we carried out a cognitive work analysis. Second, we test several analogical modalities of written presentations focusing on the construction of a specific simulator. Finally, two experiments are presented showing a significative effect of this simulator on the comprehension of cranes technical documentation.
Mondi virtuali e realtà virtuale. Un’analisi del fenomeno nella formazione sanitaria
2019
Negli ultimi sei anni la realtà virtuale (VR) e i mondi virtuali (VE) sono diventati sempre più tecnologicamente avanzati e molto più accessibili per quel che riguarda l’accesso economico. In sanità essi vengono utilizzati principalmente per cinque scopi: formazione degli studenti; formazione dei professionisti (simulatori); riabilitazione/terapia; cura/diagnosi e gestione del dolore. In questa review abbiamo analizzato 2.252 articoli pubblicati tra il 2012 e il 2019 su PubMed ed abbiamo organizzato gli articoli nelle aree simulazione per studenti; simulazione per specializzandi; simulazione avanzata per professionisti; applicazioni nei campi medico/dentale/infermieristico (soft skills); re…