arXiv subjects

Saizo Aoyagi

Publications and source records attributed to Saizo Aoyagi.

3 recordsLinked to original sources

arXiv2025

On-Demand Lecture Watching System Using Various Actions of Student Characters to Maintain Concentration

Since the COVID-19 pandemic, online lectures have spread rapidly and many students are satisfied with them. However, one challenge remains the loss of concentration due to the lack of students' copresence. Our previous work suggests that presenting 3D characters with appropriate actions has the potential to improve concentration in online lectures. Nevertheless, an effective combination of actions has not yet been identified. In this study, we developed a lecture watching system that presents a 3D virtual classroom using a naked-eye 3D display. The system includes student characters that show copresence with various actions such as nodding, notetaking, and sleeping. An evaluation experiment was conducted with two conditions; (1) student characters perform only positive actions and (2) both positive and negative actions. The results, analyzed using posture and notetaking behavior as key indicators, suggest that the system can help to maintain concentration when the student characters perform both positive and negative actions, rather than only positive ones. These findings provide promising strategies for maintaining student focus in on-demand lectures and contribute to the development of more effective online education systems.

cs.HC↗

arXiv2025

Interview Survey on Attractivenesses of Place Re-creation Toward Developing a Virtual Twin Design Theory

It is often seen that real-world locations are re-created using models, metaverse technology, or computer graphics. Although the surface-level purposes of these re-creations vary, the author hypothesizes that there exists an underlying common attractiveness that remains unclear. This research aims to clarify the attractiveness and its structures of place re-creations through an interview study with qualitative analysis. The interviews used examples of physical re-creations, such as the model in Komazawa University's Zen Culture History Museum and some dioramas of Tokyo, as well as computer-generated re-creations of Shibuya using platforms like Minecraft and Project Plateau's 3D city model. Using insights gained from this investigation, this study seeks to establish a theoretical framework for designing virtual twins.

cs.HC↗

arXiv2023

Examining the Factors of Place Sameness: A Classroom Re-creation Task in a Virtual Environment

Virtual re-creations of real-world places are attractive and becoming more popular. Attractiveness of re-created place is commonly determined by the degree of visual similarity to the original places. Even if the re-creation has poor similarity to the original, there are cases in which people recognize and allow the re-creation to have similarity as the same entity. However, the mechanisms and factors behind this contradiction have not yet been studied. This is the first study focusing on the activity and meaningofpeoplewhentheyfeelsamenesstoare-createdplace. Thispaper investigates the concept of place sameness, which is defined as the degree of similarity between an original and a virtual re-creation that represents the original place. Further, the factors of place sameness are explored using a classroom re-creation task with virtual reality (VR) technology. The participants were instructed to recreate two classrooms within virtual environmentsusingvirtualfixtures. Asresults, thedisplaydevicesinRoom B, the student desks in Room A at the memory index, display devices in RoomA,andstudentdesksandothersinRoomBattheaveragedistancehad moderate or large correlations with the place sameness index. The results suggest that the reproducibility of the number of objects related to activities in a place, and the inaccuracy of the positions of objects are factors of place sameness. Our own interpretation of the uncanny valley effect of a place was also partially observed. The main contributions of this study are the proposal of the concept of place sameness as a new perspective for virtual re-creation research and the finding of promising factors for that.

cs.HC↗