A high vaccination uptake degree is crucial to achieve herd immunity to COVID-19 and restrict the spread of the COVID-19 pandemic. However, little is known about the antecedents that reduce or contribute to shaping the intention to receive COVID-19 vaccines, as well as how psychological distress—a mental health problem—can reinforce or dampen the translation from antecedents into intention to receive COVID-19 vaccines. The objective of this study was to explore the effects of perceived clinical and access barriers, self-efficacy, and attitudes towards COVID-19 vaccines on the intention to receive COVID-19 vaccines. Simultaneously, the moderation effects of psychological distress on this relationship were also examined. Using a sample of 2722 Vietnamese adults and structural equation modeling (SEM), this study illustrated that self-efficacy and attitudes towards COVID-19 vaccines were significantly interrelated with intention to receive COVID-19 vaccines. Self-efficacy, attitudes towards COVID-19 vaccines, and intention to receive COVID-19 vaccines were negatively influenced by perceived access barriers but were positively associated with perceived clinical barriers. Importantly, our study reported that when psychological distress was higher, the link between self-efficacy and intention to receive COVID-19 vaccines will become weaker, but the effect of perceived clinical barriers on intention to receive COVID-19 vaccines will be reinforced. Moreover, self-efficacy and attitudes towards COVID-19 vaccines served as mediators in the linkages between perceived barriers and intention to receive COVID-19 vaccines. Besides providing contributions to the extant COVID-19 vaccine literature, this study provides useful recommendations for practitioners and policymakers to foster adults’ COVID-19 vaccine acceptance.
<p>In this paper, we study influence of surface anisotropy on the phase transition in antiferromagnetic and ferromagnetic ultra-thin films by using functional integral method. Besides, spin fluctuations are also given to illustrate for these phase transitions. We find that the phase transition temperature of the ultra-thin films may be higher or lower than the phase transition temperature of the corresponding bulk systems, which depends on the surface anisotropy. Moreover, we also determine crossover points at which the phase transition temperature is not influenced by the thickness of the thin film.</p>
Trường Đại học Sư phạm, Đại học Huế Tóm tắt: Sự phụ thuộc vào nhiệt độ và từ trường ngoài của các tính chất nhiệt động lực học như thăng giáng spin, độ từ hóa, độ cảm từ và năng lượng tự do của chuỗi spin lượng tử sắt từ được nghiên cứu bằng phương pháp tích phân phiếm hàm với mô hình Heisenberg đẳng hướng. Các kết quả trong gần đúng trường trung bình (MFA) và gần đúng thăng giáng spin (SFA) được chỉ ra và được so sánh với kết quả của các tác giả khác. Ngoài ra, ảnh hưởng của thăng giáng spin đã làm cho trật tự từ không tồn tại trong các hệ spin một chiều và hai chiều với tương tác trao đổi vùng hữu hạn trong mô hình Heisenberg đẳng hướng khi không có từ trường ngoài.Từ khóa: chuỗi spin, phương pháp tích phân phiếm hàm, thăng giáng spin, mô hình Heisenberg đẳng hướng, các tính chất nhiệt động lực học
This paper is aimed at analysing the impacts of financial preparation and disaster experience on households’ disaster risk perception, including perceptions of likelihood and severity in Quang Binh Province of Vietnam, one of the areas strongly affected by natural disasters and climate change. With the data from direct surveying 308 households in Quang Binh province, the research methodology includes Cronbach’s Alpha, EFA and OLS regression models. The key findings are: First, disaster experience has positive impact on natural disaster risk perception. Second, financial preparation has negative impact on natural disaster risk perception. Third, the risk of natural disasters in Quang Binh Province are increasing and unpredictable due to rapid economic growth and urbanization. This fact requires the Government, provincial commitees, and stakeholders to go beyond traditional coping methods, implement more customized policies and specific actions to try to reduce the risks of natural disasters.
Keywords: disaster risk, disaster risk perception, financial preparation, disaster experience.
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