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25 results on '"Du, Zhitao"'

13. Government Communication, Perceptions of COVID-19, and Vaccination Intention: A Multi-Group Comparison in China

Author

Su, Linsen, Du, Juana, and Du, Zhitao

Subjects
perceived barriers, vaccination intention, health belief model, COVID-19, Psychology, government communication, perceived severity, perceived benefits, General Psychology, Original Research, perceived susceptibility, BF1-990
Abstract

Government communication has been playing an important role in mass vaccination to conduct the largest vaccination campaign of the world for COVID-19 and to counter vaccine hesitancy. This study employs the health belief model to examine the association between government communication and the COVID-19 vaccination intention. A survey of Chinese adults (N = 557) was conducted in March 2021, and partial least squares structural equation modeling was employed to estimate the multi-construct relationships. The findings indicate that government communication has both direct positive association with vaccination intention and indirect association with vaccination intention through the mediation of perceived severity, benefits, and barriers. Multi-group comparisons suggest that individuals from private sectors are more easily mobilized to receive COVID-19 vaccination by government communication than those from public sectors. Similarly, the correlation between government communication and the vaccination intention of individuals with a good health status was stronger than that of those with a poor health status. The theoretical and practical implications of these findings are further discussed.

Published
2022

17. Unusual Enhancement of Midlatitude Sporadic-E Layers in Response to a Minor Geomagnetic Storm.

Author

Tang, Qiong, Sun, Haiyang, Du, Zhitao, Zhao, Jiaqi, Liu, Yi, Zhao, Zhengyu, and Feng, Xueshang

Subjects
MAGNETIC storms, GENERAL circulation model, IONOSONDES, GEOMAGNETISM
Abstract

This study investigates the variations of middle and low latitude sporadic-E (Es) layers in response to a geomagnetic storm. Es layers are observed by five ionosondes located in the Eastern Asian sector. The critical frequencies of Es layers (foEs) at six stations increased in sequence from high latitude stations to low latitude stations after IMF/Bz turning southward. Lomb–Scargle analysis shows the amplification of semidiurnal oscillation amplitude in the vertical height of Es layers during geomagnetic disturbance. Modeling results of the NCAR Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) show the enhancement of the wind field in the mesosphere and the lower thermosphere (MLT) region. Our study provides evidence that the enhanced wind field in the MLT region during the storm period could result in the enhancement of Es layers at middle and low latitude. [ABSTRACT FROM AUTHOR]

Published
2022
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25. Research on Industry Structure of Chinese Railway Based on Analysis of the Input-output Model.

Author

Huang Ting and Du Zhitao

Abstract

Using the direct consuming coefficient, direct distribution coefficient, total input coefficient, etc, the quantitative analysis on the relationships between Chinese railway industry and other industries of national economy, the attributes of railway industry, the interacting consequences, the composition of value, etc. shows that railway feight transport is mainly used in the 2nd industrial departments, so the railway nets-build should be strengthened; and its passenger transport mainly serves the 3rd industrial department, so its business should be increased. The main problem is that the building of railway transporting equipments are of strongly special purpose, short of external environment of competition, so it should be further perfected. [ABSTRACT FROM AUTHOR]

Published
2009

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