TYPES OF ATTENDEES IN COMMUNITY SPACE IN JAPAN: TOWARD DESIGNING AN ENVIRONMENT FOR SOCIAL PARTICIPATION

Introduction: Designing community space for social participation of older adults is essential for healthy aging. The behavioral characteristics of the attendees have much to offer as they relate to social settings designed in the space. This study aims to elucidate the basic typology of the attendees considering their motivation for attendance and state of social connection. Methods: Semi-structured interviews targeting attendees of Chiiki-Katsudokan, a space designed for social participation in a larger aging estate in Japan, were conducted in December 2021 (N=16, 16% male). Attendees were asked about their reasons for attending events at Chiiki-Katsudokan, interaction levels with other attendees, and levels of social participation during the COVID-19 pandemic. Results: Based on the interviews, attendees were classified into three types: Seeker, Hobbyist, and Socializer. First, Seekers (n=3) used Chiiki-Katsudokan as the primary means of preventing social isolation. Amongst the three types, the social interaction level of Seekers was the lightest, and the opportunity decreased when Chiiki-Katsudokan closed during the quarantine. Second, the main motivation for Hobbyists (n=5) was the event contents which matched their interests. Hobbyists were also likely to engage in hobby networks, which continued privately during the pandemic. Finally, Socializers (n=8) attended Chiiki-Katsudokan to communicate with friends. Many were initially socially active and engaged in social interaction outside Chiiki-Katsudokan, e.g., teatime with friends, during the quarantine. Conclusion: This study suggested that designing community space for social participation requires defining the varying levels of engagement and expecting relationships outside the space based on the behavioral characteristics of the attendees.

SOCIAL INTERACTIONS OF COMMUNITY SPACE ATTENDEES AND ANTICIPATED FUNCTION OF THE SPACE AMID THE COVID-19 PANDEMIC

Introduction: A regional community space in Japan, Chiiki-Katsudokan, was founded to facilitate the social interactions of older adults through activities. Meanwhile, the COVID-19 pandemic occasionally forced this space to close or limited the volume of its participants. In this research, the operation of the space was reviewed by monitoring the changes in the social interactions of the attendees, and by investigating the anticipated function from the attendees' needs. Method: A semi-structured interview targeting the attendees of Chiiki-Katsudokan was conducted in December 2021 (N=19, main age:80s). The level of social interaction before and during the pandemic and the newly anticipated function of the space were examined. Results: First, deep and light interactions were observed. Those with deep interactions initially had wide social connections and used Chiiki-Katsudokan to interact with friends. Meanwhile, those with light interactions only talked to other attendees while attending the space. During the quarantine, those with deep interactions stayed connected with others and met privately, while those with light interactions faced a higher risk of social isolation. Second, the most popular newly anticipated functions of the space were "Place to gather with friends (n=14)" and "Interaction with younger generation (n=14)." "Opportunity to learn about the new pandemic-lifestyle (n=11)" was also rated high, while need for "online events" was rated the lowest (n=7). Conclusion: The pandemic re-emphasized older adults' need for direct interaction. Low interest in technology-based countermeasures suggested that community spaces should expand their operation method while considering offline methods (e.g., pen-pal system) that could enhance social interaction.

Radiation emergency medical preparedness for cytogenetic biodosimetry in Hirosaki University, Japan

Hirosaki University has been designated by the Nuclear Regulation Authority as an Advanced Radiation Emergency Medical Support Center and as a hospital which accepts radiation emergency medical patients in Japan. One of the efforts of the Advanced Radiation Emergency Medicine Support Center is cytogenetic biodosimetry in radiation emergency medicine. We are working on validating all the steps from blood collection and storage to DNA damage evaluation. We are also improving various methodologies, such as the cytokinesis-block micronucleus (CBMN) assay. In our improved CBMN harvest protocol to store fixed isolated PBMCs (peripheral blood mononuclear cells), a high frequency of scorable binucleated cells can be obtained with routine biodosimetry reagents and equipment. In addition, we are strengthening infection control measures and working to establish a system that enables safe and reliable dose estimation of exposed patients during the COVID-19 pandemic. Furthermore, we have developed on-campus education system for undergraduate and graduate students, and programs for off-campus trainees, such as International Training Program for Radiation Protection to develop human resources responsible for cytogenetic biodosimetry. In this time, I would like to introduce the efforts of the cytogenetic biodosimetry laboratory in Hirosaki University, Japan. © 2021 Author(s).