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Social Wasp Diversity and Wasp Nest Removal Trends on Ulleungdo Island, South Korea
Jaehee Kim,Il-Kwon Kim,Ohseok Kwon,Moon Bo Choi National Institute of Ecology 2023 국립생태원회보(PNIE) Vol.4 No.4
This study aimed to conduct a comprehensive survey of social wasp diversity and its impacts on remote Ulleungdo Island, South Korea. A total of 12 wasp traps were placed across the island, and specimens were collected monthly from May to October. Additional collection was conducted by thoroughly inspecting the areas surrounding the traps. The traps yielded a total of 5,068 individuals, representing two genera and two species. A total of 3,961 Vespa simillima simillima Smith individuals (78.2%) were collected, and 1,107 individuals (21.8%) were identified as Vespula flaviceps flaviceps Smith. Additionally, five individuals of Polistes snelleni de Saussure were collected through sweeping, bringing the total to 5,132 individuals of three genera and three species. It is worth noting that our findings indicate potential misidentifications in the species list of Vespidae found in the literature. Emergency services call centers reported the removal of 60 social wasp nests on Ulleungdo Island between 2018 and 2022, with the highest number of reports occurring from July to September, accounting for 87% of all cases. Dodong-ri and Jeodong-ri, with the highest populations, reported the most incidents, although fortunately, there have been no recent injuries. Past incidents involving the destruction of dried squid products by Vespula species have resulted in significant economic losses, underscoring the need for preventative measures. Furthermore, ongoing surveillance of hornet invasions is essential to safeguard the Jangwon bees being reared on Ulleungdo Island.
An Exploration of an Immigrant Child’s Agency and Social Interactions in Her Preschool
Jaehee Kwon,Sung On Hwang The Pacific Early Childhood Education Research Ass 2022 Asia-Pacific journal of research in early childhoo Vol.16 No.2
This study aims to explore the agency and social interactions of an immigrant child, identified as a shy girl with a school adjustment difficulty. Data were collected through class observations and interviews with the child’s teachers and mother. The findings highlight how this immigrant child showed her active agency in building relationships with others and adapting to and negotiating with class rules. The material settings, class rules, physical space, classmates, and/or teachers’ presence restrained or promoted her interactions with her peers. Thus, this study offers important insights into how immigrant children may be better understood and supported by rethinking educational practices that can limit their agency and peer relationships.
Application of GASPAR Code for Regulatory Clearance
Jaehee Kwon,Ki-Baek Shin,Tack-Jin Kim 한국방사성폐기물학회 2022 한국방사성폐기물학회 학술논문요약집 Vol.20 No.1
According to the Atomic Energy Act of Korea, radioactive waste can be cleared when it meets the criteria, less than 10 uSv·y?1 for individual dose and 1 person · Sv·y?1 for collective dose. Consequently, it is necessary to evaluate radiation dose to get permission for regulatory clearance from the regulatory body of Korea. Several computational programs can be used for dose calculation depending on disposal methods such as landfill, incineration, and recycling. As for incineration, the effects of radionuclide emitted during combusting radwaste have to be considered to figure out exposure dose. In this study, GASPAR code is described to assess exposure dose from effluents released to the atmosphere during incinerating combustible radioactive wastes for regulatory clearance. GASPAR is the code programmed by Radiation Safety Information Computational Center at Oak Ridge National Laboratory for computing annual dose due to radioactive effluents released from a nuclear power plant to the atmosphere during routine operation. The calculating methods of the code are based on the mathematical model of U.S. NRC regulatory guide 1.109, about beta and gamma radiation from noble gas in semi-infinite plume, radioiodine, and particulates. GASPAR evaluates both individual dose and population dose. The considering pathways are composed of external exposure by plume and ground deposition of effluents, and internal exposure as a result of inhalation and food ingestion. Since the calculation model of GASPAR requires various variables about the radionuclide and disposal site, the accuracy of the results is decided by inputted values. The program contains the default values to parameters such as the humidity, fraction of deposition, and storage time of foods. However, to get permission, it is important to use the appropriate data representing the condition of the combustion scenario as substitutes for the default since the values are localized to the country where the code was developed. Therefore, dose assessment by GASPAR code can be applied for regulatory clearance by incineration, when reliable values depending on the disposal plan inputted.
권재희 ( Jaehee Kwon ),박은선 ( Eunsun Park ) 한국유아교육학회 2020 INTERNATIONAL JOURNAL OF EARLY CHILDHOOD EDUCATION Vol.26 No.2
The purpose of this study is to investigate pre-service teachers’ awareness of endocrine disrupting chemicals (EDCs), their exposure-reducing behaviors, and their needs for education about such chemicals. Data were collected from 222 pre-service teachers in early childhood programs at two Korean universities. The results of this study reveal that most pre-service teachers are aware of EDCs, and they have some knowledge and a high level of sensitivity to their negative effects. However, they do not take the active initiative to decrease exposure to these chemicals in their everyday lives. In addition, their class experiences do not significantly affect their awareness of EDCs or influence behaviors that reduce exposure to the chemicals. Thus, they present a high level of educational need regarding EDCs. Based on the findings, we discuss how to provide future early childhood educators with necessary education about EDCs.