scholarly journals Method to Grasp a Feeling of Being There by Turning a Head Forcibly while Watching a Tourism Video using a VR Headset

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1470
Author(s):  
Naoya Isoyama ◽  
Tsutomu Terada ◽  
Masahiko Tsukamoto
Keyword(s):  
Virtual Reality ◽  
The Other ◽  
Head Mounted Display ◽  
Sense Of Presence ◽  
Other Hand ◽  
Significant Difference ◽  
Perception Of Self ◽  
Left And Right ◽  
Being There ◽  
Self Motion

In virtual reality (VR) tourism, when watching a video of a tourist location, the feeling of presence improves the experience. Furthermore, it is desirable to be able to give a feeling of having been there before to the users visiting the site afterward. In this study, we aimed to reveal the factors that provide these feelings. We hypothesized that one of the factors is the perception of self-motion. Therefore, we proposed a method wherein the users were induced to turn their heads to the left and right when watching the video of a tourist site via a VR head-mounted display. We conducted two experiments and found that the proposed method conveyed the greatest sense of presence. On the other hand, there was no significant difference in giving the feeling of having been there between the proposed method and watching the video of the site on a PC.

scholarly journals I walk, therefore I am: a multidimensional study on the influence of the locomotion method upon presence in virtual reality

2020 ◽  
Vol 7 (5) ◽  
pp. 577-590
Author(s):  
José L Soler-Domínguez ◽  
Carla de Juan ◽  
Manuel Contero ◽  
Mariano Alcañiz
Keyword(s):  
Virtual Reality ◽  
Electrodermal Activity ◽  
Objective Measure ◽  
Sense Of Presence ◽  
Wide Range ◽  
Significant Difference ◽  
Head Bobbing ◽  
Controversial Topic ◽  
Being There ◽  
First Time

Abstract A defining virtual reality (VR) metric is the sense of presence, a complex, multidimensional psychophysical construct that represents how intense is the sensation of actually being there, inside the virtual environment (VE), forgetting how technology mediates the experience. Our paper explores how locomotion influences presence, studying two different ways of artificial movement along the VE: walking-in-place (through head bobbing detection) and indirect walking (through touchpad). To evaluate that influence, a narrative-neutral maze was created, from where 41 participants (N=41) had to escape. Measuring presence is a controversial topic since there is not a single, objective measure but a wide range of metrics depending on the different theoretical basis. For this reason, we have used for the first time, representative metrics from all three traditional dimensions of presence: subjective presence (SP) (self-reported through questionnaires), behavioral presence (BP) (obtained from unconscious reactions while inside the VE), and physiological presence (PP) [usually measured using heart rate or electrodermal activity (EDA)]. SP was measured with the ITC-SOPI questionnaire, BP by collecting the participants’ reactions, and PP by using a bracelet that registered EDA. The results show two main findings: (i) There is no correlation between the different presence metrics. This opens the door to a simpler way of measuring presence in an objective, reliable way. (ii) There is no significant difference between the two locomotion techniques for any of the three metrics, which shows that the authenticity of VR does not rely on how you move within the VE.

scholarly journals Cyber sickness in low-immersive, semi-immersive, and fully immersive virtual reality

2021 ◽  
Author(s):  
Sergo Martirosov ◽  
Marek Bureš ◽  
Tomáš Zítka
Keyword(s):  
Virtual Reality ◽  
Virtual World ◽  
Control Group ◽  
Head Mounted Display ◽  
Sense Of Presence ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Immersive Environment ◽  
Grooved Pegboard Test

AbstractIt is known that virtual reality (VR) experience may cause cyber sickness. One aspect of VR is an immersion or otherwise sense of presence, the sense of feeling oneself in a virtual world. In this paper an experiment which was conducted in order to find the link between level of immersion and cyber sickness felt by participants is presented. Eighty-nine participants aged between 19 and 36 years have been equally divided into four groups with different level of VR immersion. The low-immersive group was represented by PC with monoscopic screen, the semi-immersive group was represented by CAVE with stereoscopic projector, the fully immersive group was represented by VR head-mounted display, and the last group was the control group without any kind of immersion. The task for the participants was to navigate through the maze for a specified amount of time (10 min). The Simulator Sickness Questionnaire was used as a subjective measure tool for cyber sickness level and Grooved Pegboard Test for assessing the fine dexterity, both before and after the experiment. Regarding the time spend in VR the fully immersive environment had the biggest problems as more than half of the participants had to stop before 10 min (p < 0.001). Concerning the cyber sickness, the significant increase in nausea score between pre-test and post-test scores has been observed in semi-immersive group (p = 0.0018) and fully immersive group (p < 0.0001). The increase in oculomotor score was smaller. The significant difference was noted only in fully immersive group (p = 0.0449). In spite of great nausea factor after the VR immersion the participants did not show a decrease of fine dexterity in any group (p < 0.001).

Effect of Degrees of Freedom on the Sense of Presence Generated by Virtual Reality (VR) Head-Mounted Display Systems: A Case Study on the Use of VR in Early Design Studios

2019 ◽  
Vol 47 (4) ◽  
pp. 513-522 ◽  
Author(s):  
Tilanka Chandrasekera ◽  
Kinkini Fernando ◽  
Luis Puig
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Student Perception ◽  
Early Design ◽  
Head Mounted Display ◽  
Sense Of Presence ◽  
Simulated Environment ◽  
Different Types ◽  
Research Findings ◽  
Being There

The purpose of this research was to explore the use of virtual reality (VR) in early design studios. In this research project, two different types of Head-Mounted Display (HMD) systems were used. One type of HMD provided six degrees of freedom and the other HMD provided three degrees of freedom. The research findings provide comparison on the functionality of the different types of HMDs and the sense of presence in VR environments. Sense of presence is defined as the sense of “being there” in a computer-simulated environment. The outcomes of this research are (a) development of a new presence questionnaire that focuses on newer VR systems and (b) understanding student perception of using VR in design projects.

Effectiveness of Virtual Resilience Training on Assertiveness in Student Girls Aged 9–10 Years: A 1-Month Follow-Up

2021 ◽  
pp. 105984052110135
Author(s):  
Shima Gadari ◽  
Jamile Farokhzadian ◽  
Parvin Mangolian Shahrbabaki
Keyword(s):  
Experimental Study ◽  
Internal Stress ◽  
Intervention Group ◽  
The Other ◽  
Hormonal Changes ◽  
Emotional Instability ◽  
Other Hand ◽  
Significant Difference ◽  
Resilience Training

Girls between the ages of 9 and 10 begin to experience physical, physiological, and hormonal changes that may lead to internal stress. At this age, children are struggling for autonomy; on the other hand, they may experience emotional instability, and for these reasons, they may be vulnerable in many ways. This experimental study aimed to investigate the effect of resilience training on assertiveness in student girls aged 9–10. Data were collected before, immediately after, and 1 month after the intervention in the control ( n = 40) and intervention ( n = 37) groups. There was a significant difference between the assertiveness of the intervention immediately (26.80 ± 3.73) and 1 month after the intervention (27.05 ± 3.73), and assertiveness significantly increased in the intervention group ( p = .0001). Resilience training leads to improvements in assertiveness in student girls aged 9–10.

scholarly journals The Effect of Geogebra on Students’ Conceptual and Procedural Knowledge: The Case of Applications of Derivative

2017 ◽  
Vol 7 (2) ◽  
pp. 67 ◽  
Author(s):  
Mehmet Fatih Ocal
Keyword(s):  
Conceptual Knowledge ◽  
Teaching And Learning ◽  
Procedural Knowledge ◽  
Dynamic Geometry ◽  
The Other ◽  
Control Group ◽  
Other Hand ◽  
Significant Difference ◽  
Before And After ◽  
Post Test

Integrating the properties of computer algebra systems and dynamic geometry environments, Geogebra became an effective and powerful tool for teaching and learning mathematics. One of the reasons that teachers use Geogebra in mathematics classrooms is to make students learn mathematics meaningfully and conceptually. From this perspective, the purpose of this study was to investigate whether instruction with Geogebra has effect on students’ achievements regarding their conceptual and procedural knowledge on the applications of derivative subject. This study adopted the quantitative approach with pre-test post-test control group true experimental design. The participants were composed of two calculus classrooms involving 31 and 24 students, respectively. The experimental group with 31 students received instruction with Geogebra while the control group received traditional instruction in learning the applications of derivative. Independent samples t-test was used in the analysis of the data gathered from students’ responses to Applications of Derivative Test which was subjected to them before and after teaching processes. The findings indicated that instruction with Geogebra had positive effect on students’ scores regarding conceptual knowledge and their overall scores. On the other hand, there was no significant difference between experimental and control group students’ scores regarding procedural knowledge. It could be concluded that students in both groups were focused on procedural knowledge to be successful in learning calculus subjects including applications of derivative in both groups. On the other hand, instruction with Geogebra supported students’ learning these subjects meaningfully and conceptually.

scholarly journals On the Support that the Special and General Theories of Relativity Provide for Rock’s Argument Concerning Induced Self-Motion and Vice Versa

2020 ◽  
Author(s):  
Douglas Michael Snyder
Keyword(s):  
Reference Frame ◽  
Empirical Work ◽  
Special Theory ◽  
The Other ◽  
Relativity Theory ◽  
Inertial Reference Frame ◽  
Theory Of Relativity ◽  
Special Theory Of Relativity ◽  
Other Hand ◽  
Self Motion

Though Einstein and other physicists recognized the importance of an observer being at rest in an inertial reference frame for the special theory of relativity, the supporting psychological structures were not discussed much by physicists. On the other hand, Rock wrote of the factors involved in the perception of motion, including one’s own motion. Rock thus came to discuss issues of significance to relativity theory, apparently without any significant understanding of how his theory might be related to relativity theory. In this paper, connections between Rock’s theory on the perception of one’s own motion, as well as empirical work supporting it, and relativity theory are explored. Paper available at: https://arxiv.org/abs/physics/9908025v1 .

scholarly journals Configuraciones tonales de frases entonativas en enunciados aseverativos del español de la Ciudad de México

2020 ◽  
Vol 8 (2) ◽  
pp. 117-141
Author(s):  
Alberto Rodríguez Márquez
Keyword(s):  
Social Networks ◽  
Spontaneous Speech ◽  
The Other ◽  
Prosodic Features ◽  
Speech Corpus ◽  
Data Set ◽  
Other Hand ◽  
Significant Difference ◽  
Speech Data ◽  
Intonational Phrases

The objective of this paper is to describe the prosodic features of the final intonation contour of minor intonational phrases (ip) and the tonemes of major intonational phrases (IP) in Mexico City’s Spanish variety. The speech data was taken from a spontaneous speech corpus made from speakers from two social networks: neighborhood and labor. Final intonation contours of ip show a predominantly rising movement. These contours are generally produced with greater length in the last syllable of the ip, which represents the most significant difference between both networks in the case of oxitone endings. On the other hand, tonemes are predominantly descendant, although the circumflex accent has an important number of cases within the data set. Tonemes produced by the neighborhood network are produced with larger length than those from the labor network.

The Subversion of Plato's Quasi-Phenomenology and Mytho-Poetics in the Symposium

Janus Head ◽  
2009 ◽  
Vol 11 (1) ◽  
pp. 59-76
Author(s):  
Bert Olivier ◽  
Keyword(s):  
Jacques Lacan ◽  
Human Condition ◽  
The Other ◽  
Philosophical Tradition ◽  
The Unconscious ◽  
Other Hand ◽  
Significant Difference ◽  
The One

Is there a significant difference between Plato's texts and what is known as 'Platonism', that is, the philosophical tradition that claims Plato as its progenitor? Focusing on the Symposium, an attempt is made here to show that, far from merely fitting neatly into the categories of Platonism—with its neat distinction between the super-sensible and the sensible—Plato's own text is a complex, tension-filled terrain of countervailing forces. In the Symposium this tension obtains between the perceptive insights, on the one hand, into the nature of love and beauty, as well as the bond between them, and the metaphysical leap, on the other hand, from the experiential world to a supposedly accessible, but by definition super-sensible, experience-transcending realm. It is argued that, instead of being content with the philosophical illumination of the ambivalent human condition—something consummately achieved by mytho-poetic and quasi-phenomenohgical means—Plato turns to a putatively attainable, transcendent source of metaphysical reassurance which, moreover, displays all the trappings of an ideological construct. This is demonstrated by mapping Plato's lover's vision of 'absolute beauty' on to what Jacques Lacan has characterized as the unconscious structural quasi-condition of all religious and ideological illusion.

Distribution of Calcium and Phosphate in Cells of the Enamel Organ in the Rat Lower Incisor

1987 ◽  
Vol 1 (2) ◽  
pp. 236-244 ◽  
Author(s):  
T. Kawamoto ◽  
M. Shimizu
Keyword(s):  
The Other ◽  
Whole Body ◽  
Enamel Organ ◽  
Maturation Stage ◽  
Lower Incisor ◽  
X Ray ◽  
Other Hand ◽  
Freeze Dried ◽  
Significant Difference ◽  
Cell Layers

The distribution of calcium and phosphate in the cells of the enamel organ of the rat lower incisors was investigated by autoradiography and energy-dispersive x-ray spectrometry (EDS). Radioactive calcium or phosphate was injected i.p. into seven-day-old rats of the Wistar strain. The animals were frozen 0.5, 1, and 10 min after injection, and embedded in 5% carboxymethyl cellulose. Sagittal sections of 10 μm thickness were made in which the lower incisor was included as a part of the whole-body section. For autoradiography, the sections were freeze-dried and placed in contact with dry thin films prepared from autoradiographic emulsion. For EDS, sections were mounted on carbon stubs, freeze-dried, coated with carbon, and examined by EDS in a SEM. 45Ca and 32P autoradiograms showed that the radioactivity was located over the papillary layer cells adjacent to the secretory stage ameloblasts and was much higher here than in the ameloblastic layer. On the other hand, there was no significant difference between the amount of radioactivity of these two cell layers in the maturation stage, although higher radioactivity was detectable in the maturation stage enamel than in the secretory stage enamel. Pronounced Ka x-ray peaks were obtained for P, S, Cl, and K originating from the cells of the papillary and ameloblastic layers in the secretory stage, but only very low peaks were obtained for Ca. On the other hand, in addition to these elements, remarkably high Ca and Fe peaks could be detected in the ameloblastic layer of the maturation stage.

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