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    A comparative study using an autostereoscopic display with augmented and virtual reality

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    Advances in display devices are facilitating the integration of stereoscopic visualization in our daily lives. However, autostereoscopic visualization has not been extensively exploited. In this paper, we present a system that combines Augmented Reality (AR) and autostereoscopic visualization. We also present the first study that compares different aspects using an autostereoscopic display with AR and VR, in which 39 children from 8 to 10 years old participated. In our study, no statistically significant differences were found between AR and VR. However, the scores were very high in nearly all of the questions, and the children also scored the AR version higher in all cases. Moreover, the children explicitly preferred the AR version (81%). For the AR version, a strong and significant correlation was found between the use of the autostereoscopic screen in games and seeing the virtual object on the marker. For the VR version, two strong and significant correlations were found. The first correlation was between the ease of play and the use of the rotatory controller. The second correlation was between depth perception and the game global score. Therefore, the combinations of AR and VR with autostereoscopic visualization are possibilities for developing edutainment systems for childrenThis work was funded by the Spanish APRENDRA project (TIN2009-14319-C02). We would like to thank the following for their contributions: AIJU, the "Escola d'Estiu" and especially Ignacio Segui, Juan Cano, Miguelon Gimenez, and Javier Irimia. This work would not have been possible without their collaboration. The ALF3D project (TIN2009-14103-03) for the autostereoscopic display. Roberto Vivo, Rafa Gaitan, Severino Gonzalez, and M. Jose Vicent, for their help. The children's parents who signed the agreement to allow their children to participate in the study. The children who participated in the study. The ETSInf for letting us use its facilities during the testing phase.Arino, J.; Juan Lizandra, MC.; Gil Gómez, JA.; Mollá Vayá, RP. (2014). A comparative study using an autostereoscopic display with augmented and virtual reality. Behaviour and Information Technology. 33(6):646-655. https://doi.org/10.1080/0144929X.2013.815277S646655336Azuma, R. T. (1997). A Survey of Augmented Reality. Presence: Teleoperators and Virtual Environments, 6(4), 355-385. doi:10.1162/pres.1997.6.4.355Blum, T.et al. 2012. Mirracle: augmented reality in-situ visualization of human anatomy using a magic mirror.In: IEEE virtual reality workshops, 4–8 March 2012, Costa Mesa, CA, USA. Washington, DC: IEEE Computer Society, 169–170.Botden, S. M. B. I., Buzink, S. N., Schijven, M. P., & Jakimowicz, J. J. (2007). Augmented versus Virtual Reality Laparoscopic Simulation: What Is the Difference? World Journal of Surgery, 31(4), 764-772. doi:10.1007/s00268-006-0724-yChittaro, L., & Ranon, R. (2007). 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    Piloting Multimodal Learning Analytics using Mobile Mixed Reality in Health Education

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    © 2019 IEEE. Mobile mixed reality has been shown to increase higher achievement and lower cognitive load within spatial disciplines. However, traditional methods of assessment restrict examiners ability to holistically assess spatial understanding. Multimodal learning analytics seeks to investigate how combinations of data types such as spatial data and traditional assessment can be combined to better understand both the learner and learning environment. This paper explores the pedagogical possibilities of a smartphone enabled mixed reality multimodal learning analytics case study for health education, focused on learning the anatomy of the heart. The context for this study is the first loop of a design based research study exploring the acquisition and retention of knowledge by piloting the proposed system with practicing health experts. Outcomes from the pilot study showed engagement and enthusiasm of the method among the experts, but also demonstrated problems to overcome in the pedagogical method before deployment with learners

    The Virtual Museums of Caen : a case study on modes of representation of digital historical content

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    In the early 19th Century much of the Strath of Kildonan was cleared of its people who were replaced by sheep farming. This pattern was repeated across the Scottish Highlands. In 2013 Timespan, Helmsdale Heritage and Arts Centre, hosted a program of activities to mark the 200th anniversary of the Clearances. The centrepiece of these activities was a community excavation of the Caen township in the Strath of Kildonan. Based upon the evidence of that excavation a digital model of the township was created using the Virtual Time Travel Platform. The Virtual World of Caen can be explored as part of an installation in Timespans storytelling room. Visitors can experience what life would have been like in the Strath of Kildonan in 1813. This paper reports how the model has been deployed in different settings and on various digital platforms. These include showcasing the model at the Helmsdale Highland Games where visitors could explore the township of the past on stereo head mounted displays, or a Virtual Museum website that welcomes visitors from around the globe, as well as using Google Cardboard to allow visitors to explore Caen today, the virtual reconstruction of Caen simultaneously whilst on the site.Postprin

    Using Virtual Reality to increase technical performance during rowing workouts

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    Technology is advancing rapidly in virtual reality (VR) and sensors, gathering feedback from our body and the environment we are interacting in. Combining the two technologies gives us the opportunity to create personalized and reactive immersive environments. These environments can be used e.g. for training in dangerous situations (e.g. fire, crashes, etc), or to improve skills with less distraction than regular natural environments would have. The pilot study described in this thesis puts an athlete who is rowing on a stationary rowing machine into a virtual environment. The VR takes movement from several sensors of the ergo-meter and displays those in VR. In addition, metrics on technique are being derived from the sensor data and physiological data. All this is used to investigate if, and to which extent, VR may improve the technical skills of the athlete during the complex sport of rowing. Furthermore, athletes are giving subjective feedback about their experience comparing a standard rowing workout, with the workout using VR. First results indicate better performance and an enhanced experience by the athlete

    Brain Signal Analysis while Watching Stereoscopic 3D Movies

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    An electroencephalogram (EEG) is a test that measures and records the electrical activity of brain. Special sensors (electrodes ) are attached to the head and hooked by wires to a computer. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain. With technology growing every day, and stereoscopic 3D televisions becoming commercially available, a question arises: what kind of effect do 3D movies have on the brain activity and brain signals? The objective of this project is to have an attempt at answering this question as very little research has been done in this field. An EEG study was conducted on 30 healthy participants while watching a series of clips in 2D, stereoscopic 3D using active glasses and stereoscopic 3D using passive glasses. Their brain activity was recorded, and analyzed by writing a code in MATLAB to compare between the brain signals in terms of power, coherence and phase. We focused on the activity in theta and beta frequency bands. This paper shows that the results revealed a decrease in concentration in stereoscopic 3D compared to 2D, as well as higher learning behavior in 2D
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